Hydro Review Worldwide PUMP up the POWER HOW NEW RENEWABLES ARE DRIVING GLOBAL PUMPED-STORAGE INVESTMENT

November-December 2015

Hydro Review Worldwide PUMP UP THE POWER HOW NEW RENEWABLES ARE DRIVING GLOBAL PUMPED-STORAGE INVESTMENT

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EL NINO IMPACT ACT ON THE EXECUTIVE INTERVIEW: LESSONS FROM ICELANDIC 04 EXPLORED 16 RIGHT ALARM 20 ALSTOM'S OUTLOOK 24 ASSET MANAGEMENT

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1511hrw_C2 2 11/11/15 11:52 AM Volume 23, No. 6 November-December 2015 CONTENTS

PUMPED STORAGE DEPARTMENTS

Pumped Storage Hydropower Round-up 2 Viewpoint: 10 By David Appelyard Hydro: Giant among Its Peers In this snapshot of global pumped hydropower development, it is 4 World News evident that the technology is attracting significant investment. The 28 Tech Notes benefits pumped storage capacity has to offer are such that its value is 30 Dams & Civil Structures soaring, with even smaller developments attracting interest. 31 Small Hydro 32 Marine Hydrokinetics ARTICLES 36 Index to Advertisers

Creating Smarter Control Systems 16 with Trip Multiply Functionality By Ryszard Nowicki By providing better monitoring with regard to turbine-generator conditions, operators can save time by eliminating unnecessary alarms over the course of normal unit operation.

From the Board Room: Maryse François-Xausa, Alstom 20 By Elizabeth Ingram As a global hydroelectric power industry equipment provider, Alstom 4 is well-situated to understand the challenges and issues facing this industry. Maryse François-Xausa discusses future development potential and where governments need to be investing their money. ADVISORY BOARD

H. Irfan Aker Kanchit Ngamsanroaj Asset Management is Key to Operations Dolsar Engineering Co., Electricity Generating Turkey Authority of Thailand, 24 Thailand for Landsvirkjun in Iceland Emmanuel Antwi-Darkwa ETAD Consult Ltd., Ghana Christian Dalosto Pase By Unnur M. Thorvaldsdottir and Boudewijn Neijens Tractebel Energia, Brazil Enrique Cifres eWATER Consultant SL, Doan Ke Ruan With an average service age of 40 years for company power stations, Spain Power Engineering Con- sulting Company, Vietnam and the oldest approaching 80, Landsvirkjun in Iceland needed to Ian M. Cook ICCL, United Kingdom Leon Tromp improve its asset management practices. Lesotho Highlands Water Jean-Louis Drommi Commission, Lesotho Electricite de France, France Christine van Oldeneel Hydro Equipment Associa- Maryse Francois-Xausa tion, Belgium Alstom Renewable Power Hydro, France C.V.J. Varma Council of Power Utilities Roger Gill and The Dams Society, Sustena Partners, India Australia Raghunath Gopal Fernando de Menezes (R.G.) Vartak e Silva Consultant, India Itaipu Binacional, Brazil Luis C. Vintimilla Peter Mulvihill Consulting Engineer, Pioneer Generation, Ecuador 20 24 New Zealand James Yang, PhD Vattenfall Research and Development AB, Sweden

www.hydroworld.com November-December 2015 / HRW 1

1511hrw_1 1 11/11/15 11:51 AM VIEWPOINT

Publisher — Marla Barnes +1 918 832 9353 [email protected] Hydropower: A Giant among Chief Editor — David Appleyard +44 1992 656659 [email protected] Managing Editor — Elizabeth Ingram Its Renewable Energy Peers +1 816 214 5629 [email protected] Editor — Michael Harris +1 918 832 9363 [email protected] Associate Editor — Gregory B. Poindexter In the run-up to the vital Conference of the Parties (COP 21) climate +1 918 832 9330 [email protected] change talks taking place in Paris and starting later this month, the UK’s Production Manager — Daniel Greene Met Office has issued a report revealing that global temperatures this +1 918 831 9401 [email protected] o Graphic Designer — Kermit Mulkins year are already set to rise by more than 1 C above pre-industrial levels. +1 918 831 9554 [email protected] o This is more than half way towards the 2.0 C limit seen as critical in Audience Development Manager — Emily Martin V.P. of Audience Development & Marketing — June Griffin the fight against global warming. Production Director — Charlie Cole Although there is evidence this average temperature change has been enhanced by this year’s strong El Nino, as Stephen Belcher, director — www.pennwell.com

of the Met Office Hadley Centre, explains: “It’s clear that it is human influence driving our HRW — Hydro Review Worldwide PennWell Corp. modern climate into uncharted territory.” PennWell Global Energy Group The Water Tower, Gunpowder Mill, The Met Office report comes on the heels of a new ‘Technology Roadmap’ from the Hydro Powermill Lane, Waltham Abbey, Essex, EN9 1BN, UK Equipment Association (HEA), which presents the merits of hydro and the services it provides Telephone: +44 1992 656 600 Fax: +44 1992 656 700 to the energy system. E-mail: [email protected] World Wide Web: http://www.hydroworld.com Hydropower, the world’s leading source of renewable energy, can not only help free a nation Sales Manager: from fuel imports but, because it is storable and flexible, can also play a key role in integrating Europe, Asia, Africa, Oceania — Sophia Perry +44 1992 656641 [email protected] other variable renewable energy sources, such as wind and solar, into national electrical grids, Sales Director: Americas — Howard Lutzk says HEA. Indeed, among its recommendations for policy makers, the trade group says that +1 913 402 7119 [email protected] hydropower should be rewarded for the full value of the ancillary services it can provide, for Should you need assistance creating your ad, contact: example its fast reaction time or its ability to provide voltage control. Remuneration of these Marketing Solutions — Vice President: Paul Andrews services would improve the business case for new hydro investment, HEA argues. 240.595.2352 [email protected]

The report also makes clear that the improvement of computer tools remains a topic of intense Chairman — Robert F. Biolchini Vice Chairman — Frank T. Lauinger research and likely further improvements in efficiency for hydropower techology. Among those President and Chief Executive Officer — Mark C. Wilmoth Executive Vice President, areas being modelled are turbulence models; pressure pulsation; rotating stall; and dynamic Corporate Development and Strategy — Jayne A. Gilsinger Senior Vice President, behaviour and resonance between the various systems. Finance and Chief Financial Officer — Brian Conway Perhaps most significant though are the latest estimates for hydropower’s technical potential. Excluding pumped storage, HEA estimates a potential of around 4,400 GW Subscriber Customer Service PO Box 3264, Northbrook, IL 60065-3264, USA worldwide, of which close to 1,100 GW has been installed to date - leaving some 75% of Customer Service Phone: 1-847-763-9540 Fax: 847-763-9607 the total technical potential available for development and still more energy production given Email: [email protected] projected efficiency improvements. Reprints — Rhonda Brown As the need for a clean energy system for the future becomes steadily more evident, the role +1 866 879 9144 [email protected] that hydropower can play, not just in primary generation but also in facilitating other forms of The views expressed by contributing authors are those of the individuals renewables, becomes ever more clearly defined, as does its vast potential. Hydropower is indeed concerned and do not necessarily reflect those of HRW or the publishers. a giant among its peers. As Dr. Roland Münch, President of HEA, says: “Mature yet modern, HRW (ISSN 1072-9542) is published six times in January, March, May, July, September, and November by PennWell Global Energy Group, The Water proven yet innovative, established yet full of potential, this is hydropower as we know it.” Tower, Gunpowder Mill, Powermill Lane, Waltham Abbey, Essex, EN9 1BN, UK; phone +44 1992 656 600. Printed in the U.K. Canadian GST Registration Number 12681 3153 RT0001. Canada Post International Publications Mail Product (Canadian Distribution) Publications Agreement No. 40029359. @ Copyright 2015 by PennWell Corp. (Registered in U.S. Patent Trademark Of- fice). No part of this periodical may be reproduced without the consent of the publisher. Authorization to photocopy items for internal or personal use, or the internal or personal use of specific clients, is granted by HRW, ISSN 1072-9542, provided that the appropriate fee is paid directly to Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923 USA 978-750-8400. Prior to pho- tocopying items for educational classroom use, please contact Copyright Clear- ance Center, 222 Rosewood Drive, Danvers, MA 01923 USA 978-750-8400. Periodicals postage paid at Tulsa, OK and additional mailing offices. Annual subscription rate: US$44 per year. Single copies: US$20. Payments accepted in U.S. funds only. HRW is a subscriber to Business News Americas news services and incorporates their copy in its news columns. POSTMASTER: Send Chief Editor change of address, other circulation information to HRW, PO Box 3264, North- brook, IL 60065-3264. “HRW” is a registered trademark of PennWell Corp.

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Water is essential for life. It provides Voith is also a reliable and experienced both vitality as well as enormous poten- partner for modernization projects, re- tial for generating energy. Hydropower placing and enhancing components to is the most important of the renewables improve the efﬁciency of existing hydro- when it comes to electricity generation power plants. and, moreover, represents the lion’s share of energy storage capacities With more than 140 years experience in worldwide: Pumped storage plants, the ﬁeld of hydropower and high annual serving as huge “batteries”, indispens- spending for research and develop- ably contribute to further expansion of ment, Voith Hydro is well equipped to renewable energy sources around the continue delivering excellence in hydroworld and thus to limiting climate power in the years to come. change.

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1511hrw_3 3 11/11/15 11:51 AM winter and spring precipitation by more than a INDONESIA quarter. Lower precipitation amounts occurred in the north and east, but overall, September Consortium selected to build was the third driest September on record. The bureau thinks the remainder of the year will Upper Cisokan pumped-storage be warmer and drier than normal, which it partly attributes to this year’s El Nino. An international consortium has been selected to build the 1,040 MW Upper Cisokan — USA: Temperature and precipitation pumped-storage hydropower plant in Indonesia’s West Java province. Led by South impacts from El Nino will likely be seen Korean builder Daelim Industrial Co., the group also includes Italian construction during the next few months, according to firm Astaldi SpA and Indonesia’s Wijaya Karya (WIKA). The deal is worth about the National Oceanic and Atmospheric US$323 million. Administration. Outlooks favor below-average The project is being developed by Indonesian utility PT PLN Persero. It will temperatures and above-median precipitation consist of an underground powerhouse containing four 260 MW reversible Francis across the southern USA, and above-average pump-turbines, two roller-compacted-concrete dams impounding upper and lower temperatures and below-median precipitation reservoirs, and transmission lines connecting with the Java-Bali power system. over the northern part of the country. Financing is coming in large part from the World Bank, which approved a US$640 million loan to assist with the development of Upper Cisokan in 2011. MEXICO News on further hydro, effects of Hurricane Patricia WORLDWIDE eastern Indian Ocean, and vice versa.” Canada’s Innergex Renewable Energy and El Nino causes drought “here” and Effects in different countries include: Mexico’s Comision Federal de Electricidad heavy rain “there” — Indonesia: Drought affecting its south- have signed a memorandum of understanding Weather patterns associated with El Nino, ern regions is being attributed to El Nino, to study renewable energy project opportuni- combined with Southern Oscillation — an according to local reports. Drinking water ties in Mexico, including hydropower. irregularly periodical climate change — are wells in Wonigiri, central Java, are dry after no The main purpose of the agreement — causing interesting effects across the globe. rain for nearly six months. The western mon- signed on Oct. 13 — is to coordinate efforts In an El Nino-Southern Oscillation event, soon rains, which normally occur December to and develop activities allowing Innergex and El Nino represents the oceanic property in March, are expected to start two months later. CFE to define their joint participation in which sea surface temperatures are the main — Vietnam: According to Nguyen Van the development of prospective renewable factor and Southern Oscillation refers to Dam, director of the Ho Chi Minh City energy projects, particularly hydro plants with the atmospheric component. “The Southern Irrigation Service, “Low rainfall as an impact a capacity of less than 200 MW. Oscillation is a ‘seesaw of atmospheric pressure of El Nino has significantly lowered the water Innergex develops, owns and operates between the eastern equatorial Pacific and level of Dau Tieng Reservoir.” Dau Tieng run-of-river hydro facilities, wind farms and Indo–Australian areas’ closely linked with El Dam impounds the Saigon River in southern solar photovoltaic farms in Quebec, Ontario Nino,” according to the National Drought Vietnam, creating the 1.58 billion m3 capacity and British Columbia in Canada and Idaho Mitigation Center in Lincoln, Neb., USA. reservoir. “The rainy season is predicted to in the USA. Its total portfolio has a capacity “During an El Nino–Southern Oscillation end one month earlier than in previous years of 687 MW and includes 26 hydro facilities. (ENSO) event, the Southern Oscillation is and this will exacerbate the problem,” he said. CFE is a government enterprise that produces reversed. Generally, when pressure is high over — Australia: The Australian Bureau of and distributes electricity for more than 38.5 the Pacific Ocean, it tends to be low in the Meteorology said past El Nino years have cut million customers.

4 HRW / November-December 2015 www.hydroworld.com

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1511hrw_5 5 11/11/15 11:51 AM WORLD NEWS

Sumitomo Mitsui Banking Corp. (SMBC) USA is issuing $500 million through the sale of green bonds. It is the first Japanese entity to Comment period begins for EPA’s issue green bonds in dollar form, according to a report from Finance Asia. “The Development controversial Clean Power Plan Bank of Japan was the first Japanese green bond issuer, which raised €250 million ($316 The Environmental Protection Agency’s Clean Power Plan was published in the Federal million) through a euro-denominated three- Register Oct. 23, marking the beginning of a 90-day comment period and likely opening year bond in September 2014,” the report said. the door for a round of lawsuits from those opposing the controversial document. SMBC said the five-year bonds will carry The plan — unveiled by President Barack Obama and the EPA in August — is a 2.45% coupon rate. The organization said, designed to reduce carbon emissions in the USA by more than 30% from 2005 levels “Through this issuance of green bonds, we by 2030. The plan sets emissions reductions goals for fossil fuel generating plants and expect to obtain funding from investors with will require individual states to establish plans for reducing their own emissions by a strong interest in the environment and soci- September 2016. States must then comply with their own mandates by 2022. ety in order to finance environment-related EPA said the plan is a necessary response to alarming trends regarding global business where further growth is expected.” climate change, with 14 of the 15 warmest years on record having occurred since 2000. According to SMBC, it will issue the The Clean Power Plan was met with near-immediate opposition from 16 states, dollar-denominated debt with the funds led by West Virginia, which argued that the program “unlawfully exploits Section allocated for financing renewable-energy 111(d) of the Clean Air Act” in a letter dated Aug. 5. The state of Colorado announced projects. Funds from this issue could help in September it too would file suit against the plan once the plan was published in finance other hydroelectric projects. the Federal Register. The Clean Power Plan is available at http://1.usa.gov/1Q5ld7b. GERMANY Alstom wins contract for second unit rehab at Markersbach pumped-storage Regarding Hurricane Patricia, in late the 136 MW Nuble hydro plant in Chile. Alstom has received an order from Vattenfall October Servicio Meteorológico Nacional Puntilla cited differences between the two Europe Generation AG to overhaul a (SMN), Mexico’s national weather service, firms with regard to the contract, in a securities synchronous generator at the 1,050 MW forecast heavy rain in Chiapas, Mexico, filing. The contract, reportedly valued at $257 Markersbach pumped-storage plant on home to the 2,400-MW Manuel Moreno million, involves construction of the intake, Germany’s Mittweida River. Torres facility at Chicoasen Dam. CFE owns penstock, powerhouse and other works nec- The work calls for Alstom to deliver a new Chicoasen Dam, which impounds the Grijalva essary for the plant’s commissioning. stator, bearings, bearing bracket and starting River, creating the Chicoasen Reservoir that Puntilla will be seeking a new company to motor, in addition to disassembly, reassembly has 1.3 million acre-feet of capacity. take over construction of the US$350 million and commissioning services. But there were no reports of unusual run-of-river plant, on the Nuble River in The contract is the second such contract activity at the facility with regard to precip- central-southern Biobio region. The project for Alstom, which was offered the first in itation in the dam’s catchment as a result of is expected to generate 620 GWh of electricity August 2014. The company said a contractual Hurricane Patricia. Patricia is the Category 5 annually. The plant’s estimated startup date storm system SMN forecast to produce a total has been extended to May 2018 from 2017. rainfall accumulation of 6 to 12 in. The Andritz Group was awarded a Mexico had 11,632 MW of hydro capacity US$57.4 million contract in February 2015 in 2013. to supply equipment for the project.

CHILE JAPAN Construction contract terminated for Green bond market could affect At the Markersbach pumped-storage facil- 136 MW Nuble hydro plant hydro project investment ity, the generators in the powerhouse are A contract between Electrica Puntilla and Vial Japan, the third-largest global bond player, being overhauled due to reaching the end of y Vives-DSD has been terminated, meaning is using green bonds to have an effect on their service lives. The plant was commis- Vial y Vives-DSD will no longer be building renewable energy that will likely include hydro. sioned in 1979.

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powerhouse on the left abutment. RUSSIA The facility is about 94 miles downstream of the powerhouse for 420 MW Gilgel Gibe RusHydro’s commissions II and is the third plant on the Gibe-Omo hydroelectric cascade. The 184 MW Gilgel Gotsatlinskaya, continues Gibe project is also upstream of Gibe III. In addition to the first three facilities, the upgrade on Zhigulevskaya Ethiopian government said plans to build two additional facilities on the Omo River In early October, RusHydro commissioned the 100 MW Gotsatlinskaya project on — 1,450 MW Gibe IV and 660 MW Gibe V. the Avarskoye Koisu River in Dagestan. The project also has been permitted to sell High-voltage transmission lines are being electricity to the wholesale market. constructed from Wolyta Sodo, Ethiopia, to Work on the project, developed by RusHydro’s wholly-owned subsidiary JSC Sulak the Suswa substation near Naivasha, Kenya, Hydrocascade, began in January 2007. The plant includes a 69 m-tall rockfill dam, and the project should be complete by 2018. 491 m-long spillway tunnel, water intake, conduit, 453 m-long construction tunnel, Gibe III is expected to supply about half turbine building, bypass canal and two 50 MW Francis turbine-generator units. of its electricity to Ethiopia, with 500 MW HydroWorld.com reported in October 2006 that UES hydropower subsidiary being exported to Kenya, 200 MW to Sudan HydroOGK had allocated US$9 million to finance work on the project. The plant and 200 MW to Djibouti. is intended to help reduce regional power shortages which, according to RusHydro, amounted to 1.8 TWh in 2014. TIBET In addition, upgrades at the 2,300-MW Zhigulevskaya plant on the Volga River continue 510 MW Zangmu facility is online as 14 of the project’s 20 turbine-generator units have now been replaced. Rehabilitation of At more than 10,800 feet above sea level, the the plant is part of the Russian utility’s comprehensive modernization program. 510 MW Zangmu Hydropower Station — The newest five-bladed turbine, manufactured by OJSC Power Machines, was designed the largest in Tibet and one of the highest for a higher water flow rate. Components within the generator and new control, vibration elevation hydroelectric facilities in the world monitoring and diagnostic systems have also been provided. When complete in 2018, — is fully operational. Constructed at a cost the renovation will increase Zhigulevskaya’s capacity to about 2,488 MW. of US$1.5 billion, the facility is located in Gyaca County, Shannan Prefecture on the Yarlung Zangbo River (Brahmaputra River) that flows into India and Bangladesh. According to China Gezhouba Group, the facility’s contractor, structures include: — Concrete gravity dam 381 feet high and 1,276 feet long; Upgrade work is ongoing at RusHydro’s Zhigulevskaya facility, with 14 of the 20 — Spillway, plunge pool and bottom units having been replaced to date. When work on all is complete, plant capacity outlet on the right bank; will have grown by 188 MW. — Retaining dam section 262 feet in height on the left bank; — 70,208 acre-feet reservoir at 10,860 ft option covers the overhaul of Markersbach’s ETHIOPIA above sea level; and four remaining generators at a rate of one Power generation begins at — Powerhouse that has six 85 MW unit per year. Work from the first contract 1,870 MW Gibe III project Francis turbine-generators. is expected to be completed in the coming On the lower course of the Omo River and “It will alleviate the electricity shortage in spring, with the second contract to be finished built at a cost of US$1.8 billion, the 1,870 central Tibet and empower the development by February 2017. MW Gibe III hydropower project has begun of the electricity-strapped region. It is also Markersbach was commissioned in 1979. generating electricity. Gibe III consists of a an important energy base in central Tibet,” Alstom said the rehabilitation project is neces- roller-compacted-concrete dam 797 ft high; the company said. sary due to a number of machine components a reservoir that has the potential to hold The facility is about 200 miles south of reaching the end of their service lives. 14,700 million m3 of water; and a 10-unit Lhasa, Tibet’s capital city. ■

8 HRW / November-December 2015 www.hydroworld.com

1511hrw_8 8 11/11/15 11:51 AM The people of Pakistan are proactively solving their energy needs with the creation of the 969 MW Neelum-Jhelum Hydropower Project in the hills of Kashmir. For over 50 years, MWH has been pairing with the government of Pakistan to find sustainable energy sources for the nation and is committed to their energy independence.

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1511hrw_9 9 11/11/15 11:51 AM PUMPED STORAGE

Pumped storage hydropower round-up

The benefits pumped storage has to offer are such that its value is soaring as energy systems move toward cleaner forms of electricity generation. Pumped hydro is consequently attracting significant global investment.

By David Appleyard

n May this year the International build and refurbishment and replacement of 11 hydro projects including Markersbach. I Hydropower Association (IHA) released electromechanicals and uprating civils. Most recently, Vattenfall sought bids to its 2015 Key Trends in Hydropower report, For example, global technology manufac- upgrade and repair pump-turbines and other showing that 1.46 GW of new pumped stor- turer Alstom recently received an order from equipment in March 2014. age capacity was put into operation in 2014. Vattenfall Europe Generation AG for the Elsewhere in Germany, March saw a unit It is clear that the advantages of pumped overhaul of a synchronous generator at the of European utility Statkraft invite applica- hydro in terms of voltage and frequency 1,050 MW Markersbach pumped-storage tions to expand the water storage capacity of regulation of the grid and reserve capacity plant on Germany’s Mittweida River. the 200 MW Erzhausen Pumped-Storage capabilities make the technology increas- A contractual option covers the overhaul project in Germany, built in 1964. ingly attractive, particularly in the face of of Markersbach’s four remaining generators Work would involve the crest of the ring the increasing influence of variable output at a rate of one unit per year. dam and intake structure of the upper reser- renewables such as wind and solar. Markersbach was commissioned in 1979 voir, the overflow threshold at the pumping The IHA says in Europe, pumped storage and is the second-largest pumped-storage station and the water side embankment slope continues to be a focus, with new facilities project in Germany. of the lower reservoir’s main dam. totalling 8,600 MW in the planning and Vattenfall Europe Generation, the In 2014, Voith announced that it had been construction stages. German unit of Sweden-based Vattenfall AB, awarded a contract by E.ON Kraftwerke Developments in variable-speed technol- has performed numerous modifications to GmbH involving the replacement, assembly ogy are expected to be a key component of Markersbach since it was put into operation. and commissioning of the stator and rotor this new capacity, the IHA adds. In 2013, it took bids to expand the upper of the generator in unit 6 at the Waldeck Europe is pushing forward with a swathe and lower reservoirs of the project. In 2012, 2 pumped storage power plant, in North of new pumped storage projects with new the utility took bids for concrete work at Hesse, Germany. The contract includes an option for the modernization of a further machine. Construction of the original power plant took place in 1970. The project should ensure an increase of about 10% in efficiency of the machine unit. This year Voith has also been commissioned to modernize four motor-generators at the 1,290 MW Vianden pumped storage plant in Luxemburg. The project includes design, construction and installation of four rotors. Vianden is located close to the border between with Germany and feeds directly into the German power network. The plant is owned by Societé Electrique de l’Our S.A. and A swathe of new pumped storage development is underway. Source: Vattenfall. is marketed and used by RWE Generation.

10 HRW / November-December 2015 www.hydroworld.com

1511hrw_10 10 11/11/15 11:51 AM The plant was first set into operation in 1964. After expansions in 1976 and 2014, the total installed pump capacity is 1045 MW. Germany’s pumped-storage power plants have a combined capacity of about 7 GW, but a recent study by the Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen University and Voith indi- cates there is potential to add to nearly 24 GW of new pumped-storage capacity in the states of Baden-Württemberg and Thuringia. Dr. Andreas Schäfer, chief engineer at the Institute for Electric Plants and Energy at RWTH Aachen, commented: “Pumped-storage plants would offer important systems services, especially for control reserves, but also for the provision of secured outputs. In this way, pumped-storage systems can make a contribution to the success of the energy transition.” Refurbishment of pumped storage can significantly increase capacity. The study shows that with a 60% share of renewables, about 2 TWh Source: Vattenfall. of renewable electricity can be additionally utilized if pump storage capacity in Germany is increased to a total capacity of 15 GW. delivery of a spherical valve to be installed at the 383 MW Frades 2 Stephan Kohler, Chairman of the Board of Deutsche Energie- pumped-storage hydro plant. The 170 tonne component is one of two Agentur (dena), argues that more should be done to recognise the that will control flows through the Frades 2 plant’s pair of reversible ancillary services potential of pumped hydro: “Pumped storage power pump turbines on the left bank of the Cavado River. plants should be given first priority, because they are the only existing industrial-scale power storage systems and, beyond that, also make The Americas many valuable contributions to the power grid. We have to adapt Although only Argentina is the only South American country to have the framework conditions in such a way, that this added value is also installed significant pump storage capacity to date, the technology adequately remunerated.” is certainly under consideration. In a novel application, for example, In neighbouring Austria, this year saw the civil engineering contract proposals have been put forward that would see a 600 MW solar plant for a new 940 MW pumped-storage plant. coupled with a 300 MW pump-storage facility in Chile. According Pumpspeicherkraftwerk Koralm GmbH has selected ILF Consulting to the proposals from developer Valhalla Energy and submitted to Engineers and AF-Consult to provide engineering services for the Chile’s environmental regulatory authorities (Servicio de Evaluación Koralm project in Austria. Ambiental, SEIA), the hydroelectric pumped-storage plant set for the The Koralm plant will include an upper and lower reservoir, headrace, northern Tarapaca region will use seawater. penstock and tailrace, surge tank, cavern powerhouse and access tunnel, The so-called ‘Mirror of Tarapaca’ project is expected to require an transmission line and switchyard. The plant is expected to have a head investment of some US$1 billion. of about 650 m and will the largest hydroelectric plant in Austria upon While South America has seen very limited pumped-storage devel- its completion. opment to date, North America is on a roll, with a raft of announcements Austria is also home to the new Ober-vermuntwerk II and Rellswerk suggestive of a buoyant market for additional pumped storage capacity. pumped storage projects, which are located in Montafon, Vorarlberg. In September, for example, GB Energy Park LLC and Alstom Voith will supply the energy provider Vorarlberger Ill-werke AG with announced an agreement for equipment supply for the 400 MW two pumps and a pump turbine for the two projects under the terms Gordon Butte project. of a contract announced in December 2014. The Obervermuntwerk II A closed-loop pumped storage facility in south central Montana, it pumped-storage power plant is being constructed between the Silvretta will consist of upper and lower reservoirs connected by an underground and Vermunt reservoirs at an altitude of around 1700 m. concrete and steel-lined hydraulic shaft. The head between the two For the Obervermuntwerk II, Voith is to supply, assemble and reservoirs if 1,025 feet. The powerhouse will contain four pump-turbine commission two 170 MW storage pumps. For the new Rellswerk units with total installed capacity of 400 MW and expected annual project, Voith Hydro will supply a 13 MW, 3-stage pump turbine. energy generation of 1,300 GWh. Over in Portugal EDP – Gestão da Produção de Energia, S.A., This followed news that San Diego is to pursue a two-year, $900,000 awarded an ANDRITZ HYDRO-led consortium an order for the study of the proposed San Vicente pumped-storage hydropower project supply and erection of the complete electromechanical equipment for that would involve the construction of a 240 to 500 MW hydroelectric the pumped storage project Foz Tua. plant using the existing San Vicente Dam and reservoir. The contract includes two reversible pump turbines of 120 MW This year also saw United Power Corp. file an application to study each and the station will be erected on the river Tua, a tributary of the development of the 30 MW South Maui Pumped-Storage project on Douro River in the north of Portugal. the south coast of Maui Island, Hawaii. This project would also use Portuguese pumped storage also got a boost in 2015 with the seawater from the Pacific Ocean.

www.hydroworld.com November-December 2015 / HRW 11

1511hrw_11 11 11/11/15 11:51 AM The proposed project includes an upper The project is expected to have a capacity include the 1,000 MW Drakensberg in the reservoir composed of four concrete storage of up to 1,300 MW. mountains of the Northern Drakensberg of tanks and a powerhouse containing three 10 KwaZulu Natal and the 400 MW Palmiet, MW variable-speed pumps and two 15 MW Africa’s pumped hydro ambitions 2 km upstream of Kogelberg Dam on the variable-speed Pelton turbine-generators. Although a vast tranche of Africa’s con- Palmiet River near Cape Town. Estimated annual generation is 5.2 GWh. ventional hydropower potential has yet to A third pumped-storage site, the And, in a recent development, an affiliate be developed, pumped storage projects are 1,332 MW Ingula project, is being con- of Eagle Crest Energy has agreed to buy the nonetheless underway. structed 55 km from Ladysmith, within the Kaiser Eagle Mountain mine near Desert In South Africa, incumbent utility Eskom Drakensberg range, on the border between Center, California, as part of a plan to create is increasing its pumped storage capacity with the Free State and KwaZulu-Natal provinces. a new pumped storage hydropower plant from a new project set to be commissioned this year. The scheme is being built on a 9,000 ha site two of the iron ore mine’s vacant pits. Eskom’s operational pumped-storage schemes at a cost of RND8.9 billion. Development of the pumped storage scheme was first proposed in 2002. Construction encompasses two dams for the PRODUCTS upper and lower reservoirs; a powerhouse, two tunnels, access roads and transmission lines. BUILT ON The underground powerhouse contains four 333 MW pump turbines. EXPERTISE And, in July this year, the Lesotho RELATIONSHIPS BUILT ON Highlands Development Authority (LHDA) issued a tender call for economic studies and development arrangements for the 1200 MW TRUST Kobong Pumped-Storage project. South Africa’s Cabinet agreed in 2008 to invest US$712 million in the Lesotho Highlands Water Project (LHWP) Phase 2, which includes construction of Kobong Pumped-Storage project, Polihali Dam as upper reservoir for Kobong, a Polihali-Katse transfer tunnel, roads and associated environmental and social programs. A contract was recently awarded to Maleka, Ntshihlele, Putsoa Joint Venture for 8 million maloti (US$648,397) for demarcation of Polihali Reservoir.

Asia expands PS projects Asia, too, is seeing its share of development. Recently, a consortium led by South Korean builder Daelim Industrial Co., was selected to WhateverWh your challenge, weíve got the people,pe skills and products to meet it head build the 1040 MW Upper Cisokan pumped on.on Weíre a company steeped in experience storage hydropower plant in Indonesia’s West andan rich in innovation. We are WEIR American Java province. Hydroô.Hy Speak to our skilled team and set a performancepe challenge for us. The consortium also includes Italian construction firm Astaldi SpA and Indonesia’s Wijaya Karya (WIKA). Being developed on behalf of Indonesian utility PLN, the deal is worth about US$323 million. Financing for the project is coming in large part from the World Bank. http://hrw.hotims.com RS #6 In July, Nepal advanced the development

12 HRW / November-December 2015 www.hydroworld.com

1511hrw_12 12 11/11/15 11:51 AM http://hrw.hotims.com RS #7

1511hrw_13 13 11/11/15 11:51 AM of its first pumped storage hydro project, as pumped-storage hydropower plant, proposed including pump turbines, motor generators Tanahu Hydropower Ltd awarded contracts for construction in North Queensland, and other equipment. to engineering firm Lahmeyer International Australia, at the site of the Kidston Gold GmbH and sub-consultant Manitoba Mine. The project includes two large adjacent Outlook for pumped storage hydro Hydro International. The contracts relate to pits that would act as the plant’s upper and According to the IHA, the world’s total the development of the 140 MW Tanahu lower reservoirs [see box panel]. pumped storage capacity now stands at some pumped-storage project. In a nod to further development in the 142 GW, increasing by something north of Tanahu will be located on the Seti River eastern hemisphere, August saw Russia’s PJSC 10% during 2014 alone. Clearly, there is a about 100 km from Kathmandu. The proj- RusHydro and the Korean Water Resources strong appetite not just for new build pumped ect’s upper reservoir will be impounded by a Corp. jointly look to develop a pumped-stor- storage, but also refurbishment and reha- 140-meter-tall gravity dam. age hydroelectric plant in Russia’s Far East. bilitation. This push for additional pumped More recently, in September, Voith was RusHydro and K-Water will create a storage capacity has a number of drivers, awarded a new contract to supply electro- working group to study the feasibility of but chief among them is the headlong rush mechanical equipment for a pumped storage the Primorsky Energy and Water Resources for more solar and wind power, renewable plant in Thailand. The order is for the exten- Complex (PEWC), including the Primorskaya energy technologies that require back-up if sion of the Lam Ta Khong plant and includes pumped storage plant. security of energy supply is to be maintained. the supply of two motor-generators and two Of course, China cannot be ignored Pumped storage is an ideal solution, if not 255 MW vertical pump turbines. when it comes to pumped storage. Last year the only realistically economical one. As such, Located on the Lam Ta Khong River Hainan Pumped Storage Power Generation demand for its ample utility in service is likely 200 km northeast of Bangkok, the extension Co. Ltd. awarded a US$71.14 million contract to grow in the coming decades as the global project will double the capacity to a total of to Alstom to equip the 600 MW Hainan economy inexorably shifts toward a clean 1000 MW. Qiongzhong pumped-storage plant. energy system. ■ Australia, too, is looking to expand its Hainan Province’s first pumped-storage pumped storage capacity as Genex Power has project operations are due in December 2017. appointed consulting firm Entura to provide Under the terms of the deal, Alstom David Appleyard is Chief Editor of HRW – Hydro Review a feasibility study for the 330 MW Kidston will provide three 200 MW turbine units, Worldwide magazine

Glyn Rhonwy quarry pumped storage

Although the nearby 1800 MW pumped storage plant Dinorwig now expected to be operational by 2019. has been operating since the 1980s, development of pumped Snowdonia Pumped Hydro is a subsidiary of Quarry Battery storage capacity is still being actively pursued in Snowdonia, the Company, which together with AECOM developed a preferred mountainous region of north Wales, in the UK. design, including the dams and a cut and fill pen stock. If plans proceed to construction, two abandoned slate quarries, Construction is anticipated to take 3 to 5 years with the upper Glyn Rhonwy and Chwarel Fawr, are set to be the basis of the reservoir holding some 1.1 billion litres. UK’s first new pumped storage capacity for several decades. The developers see a strong business case for a multitude of such First mooted in 2012, in April this year, the UK’s Crown Estate brownfield sites, with their relatively low additional infrastructure agreed to lease 13 Ha of land to Snowdonia Pumped Hydro for its costs and minimal visual and environmental impact. £100 million (US$155 million) project. This followed the granting “By continuing to utilize unconventional sites such as the of planning permission in September 2013. abandoned quarry on The Crown Estate’s land, Britain can realize The project includes the construction of a 20-metre-high dam an additional 15 GW of grid-scale storage using pumped hydro on the upper reservoir at Chwarel Fawr and a 15-metre-high dam technology alone,” said Peter Taylor, chairman of Quarry Battery. on the lower reservoir at Glyn Rhonwy. The company is proposing a new generation of small-scale Originally, the Glyn Rhonwy plant had been planned as a pumped storage facilities, arguing that they are economically 49.9 MW capacity installation, that proposal was increased by a viable and environmentally more acceptable. further 50 MW in December last year, pushing the application Last year it secured a further £3 million (US$4.8 million) in to the UK Planning Inspectorate. private funding for initial work at the site, near Llanberis and it The proposed change in output, involves installing larger is in negotiations to secure five further sites from a short list of turbines and associated equipment within the powerhouse, 30 identified potentials.

14 HRW / November-December 2015 www.hydroworld.com

1511hrw_14 14 11/11/15 11:51 AM Harness the power from the water

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1511hrw_15 15 11/11/15 11:51 AM TECHNOLOGY & EQUIPMENT

Creating smarter condition management systems with Trip Multiply functionality

By providing better monitoring over turbine-generator conditions, operators can save time by eliminating unnecessary alarms over the course of normal unit operation.

By Dr. Ryszard Nowicki

very hydro turbine generator has vary- as best practice. Instead, another approach to functionality because they present another type E ing vibration frequencies, which can prevent alarm overloading is the use of Trip of resonance behavior for partial load operation. be impacted by specific processes and Multiply functionality. environmental variables. Vibration measure- Trip Multiply (TM) functionality is Level of vibration change in ments — including mechanical, electrical and defined in the monitoring system by the max- RPM transient conditions

hydraulic — provide the most important data imal multiplier (TMMax) that can be applicable Vibration is influenced by the speed of rotat-

about the health and condition a turbine gen- for alarm values, and by a resolution (TMRes) ing equipment during operation, and many erator and can also reveal what other variables with which it can execute for values that are machines operate at running speeds above the may be impacting the operating environment. lower than the maximum values. rotor system’s critical speeds if they are in a good For example, an increase in vibrations could Improving the TMRes gives operators a technical condition. Therefore, under transient indicate an oversized guide bearing clearance more precise monitoring configuration, and operating conditions, operators can observe or a change in power. Changes in vibration consequently, allows more sensitive system increasing and decreasing vibration levels. measurements can also result from water flow reaction in the case of technical condition This typically occurs when the speed of the conditions. The causes for water pulsation are changes in a turbine generator. machine is increased from a stopped condi-

divided into two categories — forced vibra- The functionality, indicated as ALERTNORM tion to its operating speed (RPMNOM). This

tions and self-excited vibrations — which can and DANGERNORM, is designed to tempo- transitional condition is not the same for all be observed for: rarily elevate alarm set points by a preconfig- generators because many of them operate with

— Steady conditions when there is no ured multiple. The TM has been previously nominal rotor speed RPMNOM below rotor

change in flow over a period of time; limited to rotor resonance effects and radial RPMRES. However, due to some technical con- — Periodic flow when the variations in vibration while allowing the asset to ramp dition changes, such as coupling bolt cracking flow are repeated at a fixed time interval; and through phases of operation where a resonance with the rotor system, a turbine can slowly — Unsteady flow when flow conditions exists, defined as the frequency band pass from change its operating mode. Additionally, some

can vary with time — particularly with regard RPMLOW up to RPMHIGH. generators increase vibration levels during the to velocity and pressure. This works well for mid- and high-speed transient operation condition due to other By adjusting their condition monitoring rotating machines that produce vibration environmental variables. and protection systems, project operators at a frequency equal to shaft and rotational The occurrence of resonances and the can decrease instances in which alarms are speed. The unbalanced force produces serious consequent effects on vibration magnitudes falsely triggered by equipment operating under vibrations when the rotor passes through is is one of the most common problem sources normal operating conditions. balance resonance, but it is not a frequent for turbine bearings and foundation. This is scenario for turbine generators. largely due to a faulty model design based on Asset condition alarm management Many low-speed turbines operate in normal improper estimation of design parameters, such While an overload of false alarms can be technical conditions well below the first rotor as model stiffness, modal mass of supporting

managed in ways ranging from bypassing or resonance frequency (RPMRES). However, it structures and excitation frequency of forces in inhibiting them, this is generally not accepted can still be useful for them to use the TM the machine. For example, a high groundwater

16 HRW / November-December 2015 www.hydroworld.com

1511hrw_16 16 11/11/15 11:51 AM ŭŭŭŮůŰŭűŲųűŴŵŶŷŸŲŮŹŰź ſƔűƄƏƕŵƕŲűƄŰŶƄƇųűŲƖƗ

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1511hrw_17 17 11/11/15 11:51 AM 1511hrw_18 18 Figure 2—GuideBearingVibrationVelocityTrend tween head and power. and head tween be- relationship the shows unit turbine aFrancis-type for A model velocity trend of guide bearing vibrations over a week-long period. aweek-long over vibrations bearing guide of trend velocity the shows plant ahydro in turbines 120 MW one-of-six from Data resulting from phenomena cavitation frequencies andthe natural of addition,In between theexcitations acorrelation beobserved can intensive conditions.growth cavitation ofbubbles during andcollapse by isdetermined intensepressurezone caused fluctuations by the from thehydrodynamic oftheflow. properties Therefore, thisdestructive the two operational zones, butitisnotapproved operation of its own. for itliesbetween as possible because 2shouldbecrossedZone asquickly tube. beltinthedraft vortex Consequently, thepressure pulsation issmall. In theoptimum operationarea, 3, Zone there would benodeveloped ofpossibleoperation. zones four 1and3are Zone operation. for Only axis), axis)andpowerbetween (horizontal head (vertical andindicates Using asamodel, aFrancis-type turbine 1shows therelationship Figure loading during dynamics generator turbine of Changes transmission totheentire powerhouse buildingandstructure. table inbarrage powerhouses couldberesponsible excessive for vibration 18 Figure 1—PossibleZonesofOperation Magnitude: 2 mm/s Peak/div Nominal

+m% –m% Head Some vibration components of turbine assembly structures result structures vibration componentsassembly Some ofturbine HRW HRW 10 20 30 40 0 a Dy2 a Dy4 a Dy6 Day7 Day6 Day5 Day4 Day3 Day 2 Day1 / November-December 2015 Accepted – ZONE 1 Not advocated Time: 8Hours/div – ZONE 2 (Danger Level) 12 mm/s Advocated – ZONE 3 Nominal Power (Alert Level) 8 mm/s Not allowed – ZONE 4 a hydro around plant—each 120MW. The figure alsoshows two ofone week.period running in The dataisfrom one ofsixturbines 2presents trend vibrationsover a Figure avelocity ofguidebearing data the Analyzing resonanceas adecrease inmechanical frequencies. conditionof some changes. technical visible changes are usually Such unitbehaviors, ofdynamic better monitoring andeasierrecognition water flowthe system. allowing treatedcan be asignature as It analysis andresonances structure of questions abouttheturbine-supporting thefrequenciesdetermine ofthereal dominant excitations, answering withchangesoftheupstream anddownstream waterlevels. vary and can filaments that rotate ataspeedlower thanthe rotational speedoftheturbine, vibration —known as “Rheingan’s Influence” caused —is by spiral vortex standpoint. conditionin good from integrity technical a mechanical This load range, inacertain operated aturbine whenever were iftheturbine even nominal power, thisunit, andfor present they similarmagnitudes. the maximum head. Additionally, thelowest are vibrationlevels around theminimalhead for andthehighestones for vibrations were observed correlated withhead on average. seismic This signifiesthatthesmallest nominal head, for observed arevibrations positively andtheguidebearing andconcrete structure types. somethe turbine foundation for turbine overloading. to beimportant Itcan decrease alarm operator significantly monitoring, andprotection turbine used for itoring systems andit can Trip feature ofcondition isanimportant mon- functionality multiply Conclusions condition. come technical from innormal unitsrunning generated thealarms thoughall units havingasimilarbehavior—even peryear 7,000alarms all with per week alarms see120 andnearly will 20timesperweek. alarm HIGH-HIGH This meansthatoperators and thenthedanger changes to42mm/s. up to12mm/s, itwould beenoughtoputthe coefficientas3.5 TM —set level Having thedangerHIGH-HIGH —definedhere asa thisplantusingthe for besolved operation can functionality.TM in itssteady stateoperation. andshutdown; startup turbine and than thoseconfiguredfor the danger setup. higher vibration levels and steady stateoperation theunitexperiences isabout25%belowwhich analert. operation bothtransient During approximately two timesperday. thresholds for “Alert”and “Danger”, data revealsand the runs theunit A vibration test may be carried out during unitcommissioning outduring to A vibration testmay becarried In theseconditions, theentire ofaplantwould structure begintovibrate For turbine, thisparticular ofrotor level thesmallest vibrations are For one of six units at this plant, only is seeing the the operator anditsproperThe problem sensitivity ofcontrol system monitoring theunit’s irregularities during stopconditions and Short-time — each during systematically increases are observed Vibration — leads conclusions: tothefollowing analysis A quick steady stateoperation,During vibrationsmeasure around 6mm/s, — Continued on page on 36 — Continued www.hydroworld.com 11/11/15 11:52 AM When precision, reliability and quality are your expectations… TURN TO SOTEK/BELRIX

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1511hrw_19 19 11/11/15 11:52 AM EXECUTIVE INTERVIEW

From the Board Room: Maryse François-Xausa, Alstom

As a global hydroelectric power industry equipment provider, Alstom is well-situated to understand the challenges and issues facing this industry. Maryse François-Xausa discusses future development potential and where governments need to be investing their money.

By Elizabeth Ingram

lstom provides a variety of equipment perfect complement to a grid being fed with François-Xausa: One of the challenges is A for the hydroelectric power industry, large quantities of intermittent energy, which linked to the opinion of the people. There are from water to wire. In fact, the com- is the case in North America and Europe. not enough electricity consumers and officials pany says its turbines and generators installed In addition, energy storage, which who recognize that hydro is a renewable worldwide represent more than 25% of the hydropower provides, is very important. source of energy, and there is a lot to do with total hydropower capacity today. The company And of course, in new markets, local energy respect to this in the hydropower industry. It is has been operating for more than 100 years production is needed. The availability of important to communicate to consumers and and is headquartered in France. energy contributes to the growth of countries’ policy makers alike that hydro is the leading HRW-Hydro Review Worldwide recently sat economies, as well as to their energy indepen- renewable energy source and that there is down with Maryse François-Xausa, senior great hydro potential still to be developed. vice president, global R&D with Alstom The second point is that we must be Renewable Power and vice president of able to explain to all people that hydro is a global R&D and product management possibility to help integrate other renew- with Alstom Hydro. In 2014, François- able energy sources because hydro is really Xausa received a Women with Hydro Vision flexible. It has quick start capabilities and award from PennWell in the category of can operate at partial load, which helps research and development, in recognition accommodate the variations associated of her tremendous influence and impact on with wind and solar energy. the hydroelectric industry. The following is a transcript of that discussion. Q: What are the innovative approaches you would put forward Q: What does the term “modern and use as an example of hydropower hydropower” mean to you? as a modern, evolving technology? François-Xausa: Hydro is modern and Maryse François-Xausa François-Xausa: There is a lot to say about this is something we need to explain, to new technology but there is one point everybody. It’s not just an energy of the past, dence. Finally, hydroelectric power can help in particular I want to make. Variable speed it will be an energy of the future. Worldwide decrease a country’s environmental footprint pumped storage is a technology that will help there are more and more intermittent renew- by decreasing its dependence on fossil fuels us with more flexibility in both pumping mode ables (such as wind and solar) being developed. Hydro is a technology that is very modern. and turbine mode. With variable speed units, There is a need to introduce this intermittent the power absorbed in pumping mode can energy into the grid, and hydropower can help Q: What is the main challenge for hydro be varied by about 30% over a certain range, in this respect. Hydro is flexible and is the development around the world? depending on the head. This enables the power

20 HRW / November-December 2015 www.hydroworld.com

1511hrw_20 20 11/11/15 11:52 AM station operator to regulate grid frequency An example of such a project for us is from Tianjin, where we celebrated 20 years in pump mode and deliver services such as the 2,620-MW Chief Joseph facility on the of Alstom Hydro in China. During this trip, frequency regulation to the grid operator Columbia River in Washington State in the I heard first hand from customers and con- while filling the upper reservoir. Conventional USA. It worked perfectly. In addition, with sulting engineers about their ambitions and pumped-storage plants can only deliver this the new materials, we can complete the work the challenges they face. China needs more service while in generation mode. Use of vari- [of installing the extensions] in three days electricity and it needs a greater proportion of able speed technology allows us to achieve a instead of three weeks. it from renewable sources. China continues to lot of segregation in terms of load generation. build very high installed capacity hydropower The additional flexibility provided by the speed Q: Could you identify key hydro markets plants, such as Xiangjiaba, equipped with variation also enables sites with a wide head and explain why they are attractive? the world’s most powerful hydro turbine and variation to be equipped. François-Xausa: For new hydro, China generator units at 800 MW/889 MVa. These Alstom’s first variable speed machine remains the leading market. I recently returned units were supplied by Alstom. China is also a installed is at the 1,450-MW Linthal plant in Switzerland, which is a high-head site. This plant is being extended through the installation of four 450-MW units, and it will GE be commissioned soon. We also are designing Measurement & Control and manufacturing variable speed equipment for three other facilities, Nant de Drance in Switzerland, Tehri in India and Le Cheylas Hydro Condition Monitoring in France. Solution by Bently Nevada* Q: What is the most striking change you GE’s Bently Nevada product line offers comprehensive have witnessed for hydropower recently? solutions to optimize hydro operations by increasing François-Xausa: Improvements in flexibility. uptime and reducing unplanned downtime. GE is leading Traditionally, hydro was used mainly as a a new era of power generation that connects machines, baseload power source. Operators would set data and people. their machines at the best operating point at the beginning of the year and 20 years after you would see them operating the same way. Today, this is not the view that we have. We use hydropower with a lot of flexibility in order to move the load. It can have a lot of variability. We have to design completely new machines that can operate safely in a wide range of operation, and that means a lot of development. This is a big change.

And there is a smaller change, which is 3500 ADAPT 3701/46 Dual Channel Monitor materials. New materials are really key to build- Hydro Monitor* ing machines today. We see a lot of evolution with regard to use of new material in hydro. In the USA, for example, stay vane extensions are being accomplished using composite materials. System 1* Transducers Services Extending the stay vanes allows the shape of the stay vane to be modified to reduce losses caused by turbulence, which in turn increases plant efficiency. Alstom uses a technique to For more information please make stay vane extensions with a composite visit www.gemeasurement.com material layup shell that is bonded to the stay vane and filled with an epoxy casting. This technique greatly reduces the lead time for creating stay vane extensions. http://hrw.hotims.com RS #12

www.hydroworld.com November-December 2015 / HRW 21

1511hrw_21 21 11/11/15 11:52 AM European Commission. This is a research project that includes Alstom and the utility Electricite de France (EDF), as well as Elia, DNV GL and Imperial College London. The focus is the industry’s first upgrade of fixed speed pumped storage to variable speed.

Q: What single change would you like to see that could enhance the role of modern hydropower? François-Xausa: I would like to see changes to government policy, with more government support for hydro. And more government support for research. Governments need to accept and promote this energy source, which is carbon-free and renewable.

An 800 MW turbine runner, supplied by Alstom and destined for the Xiangjiaba facility in Q: Any final thoughts/comments China, is being delivered. on the future of hydropower? François-Xausa: I want to leave you with major market for pumped storage, and Alstom flexibility of these plants. three points. recently won the contract for the Qiongzhong 1. Hydro has huge potential for growth. Only pumped storage project. Q: What is the main challenge a third of the potential sites worldwide Many countries in southern Asia have for hydropower development have been equipped, and we need to ensure significant development potential as well. We around the world? everybody knows this point. see quite a lot of hydro projects on the horizon François-Xausa: Investment will be very 2. Pumped storage is the only way to answer there. Turkey is a strong market and Africa has important for hydroelectricity globally. We to needs of flexibility with regard to new enormous potential. Latin America is perenni- need more support for research in particular. intermittent renewables. ally a good market for building new projects. Hydro is at a critical point. There has been a lot 3. More and more, hydro project owners are Finally, Europe and North America have of evolution with regard to flexibility, and we turning to companies, such as Alstom, to quite a lot of existing plants, and there is a need need to do significant research on this aspect. provide service, operation and management to upgrade these plants to the new needs of One example of research being performed for their hydropower plants. ■ the market, to improve efficiency and mainly is the eStorage consortium supported by the

Elizabeth Ingram is managing editor of HRW-Hydro

Review Worldwide.

GE acquires Alstom GE’s recent acquisition of Alstom’s power and grid businesses, including Alstom’s hydro business, is an important step in GE’s transformation to a digital industry company. Alstom and GE’s power and grid technology and geography combined will enable many new opportunities to create value for customers. GE plans to grow its hydro business, which already accounts for more than 25% of the total hydropower The 1,450 MW Linthal plant in Switzerland is the site of the first Alstom variable speed ma- capacity worldwide. chine being installed.

22 HRW / November-December 2015 www.hydroworld.com

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1511hrw_23 23 11/11/15 11:52 AM ASSET MANAGEMENT

The 270 MW Burfell hydroelectric facility, originally commissioned in 1969, is on the River Thjorsa in southern Iceland.

Asset Management is Key to Operations for Landsvirkjun, National Power Company of Iceland

With an average service age of 40 years for company power stations, and the oldest approaching 80, Iceland’s Landsvirkjun, National Power Company needed to improve its asset management practices.

By Unnur M. Thorvaldsdottir and Boudewijn Neijens

andsvirkjun, National Power Company “Landsvirkjun’s role is to ensure electricity system to manage investment planning, but L of Iceland is Iceland’s largest electricity generation and delivery is secure and efficient, increased organizational demands began producer and it offers 100% renewable and fulfils the terms of the agreements signed outpacing the home-grown system, which energy. Landsvirkjun operates 14 hydropower with our customers,” said Einar Mathiesen, was originally designed only for short-term stations, two geothermal stations and two executive vice president of Landsvirkjun’s planning. The company needed an updated, wind turbines. It delivers energy wholesale Energy Division. robust, system-wide asset management both to distribution companies and directly “Even with effective maintenance practices, program to support infrastructure invest- to large industrial customers. assets need to be renewed or refurbished ment decision planning processes, develop before they reach the end of their useful life. a strategy to help prioritize projects and Correct decisions at the correct time The company needed a more holistic asset manage potential risk. Sustaining and monitoring existing assets, management strategy — one that could help and investing in new infrastructure requires us make the right decisions at the right time, Initial challenges efficient systems. In 2012, Landsvirkjun to maximize the value of the assets, as well The newly formed Asset Management established an Asset Management Group to as the natural resources with which we have Group began by documenting the company’s develop 3-year short-term and 20-year long- been entrusted.” current asset position versus future goals. term investment plans for equipment renewal. Landsvirkjun had been using an internal Although equipment condition assessments

24 HRW / November-December 2015 www.hydroworld.com

1511hrw_24 24 11/11/15 11:52 AM were conducted, the assessments were not based on numerical index scores that quantified general asset condition. Landsvirkjun needed a company-wide standardized process to capture investment data, evaluate projects and document decisions. The challenges included getting buy-in from internal and external stakeholders within or connected to Landsvirkjun and clearly conveying the long-term goal of everyone working toward prioritizing projects while managing risk. Additionally, Landsvirkjun could no longer continue to invest in an internal system that neither provided needed visibility to manage critical asset risks nor defined and selected the measures to mitigate risks. All of these factors combined led to seeking external Asset Investment Planning and Management (AIPM) guidance, to guide the company through the exercise and remain on track.

Phased approach It began with a workshop in 2012 where the Landsvirkjun Asset Management Group started evaluating the company’s current asset investment planning processes, and mapping out where they wanted to go in the future. After taking some time to digest and analyze the outcomes from these discussions, Landsvirkjun decided to move forward with an AIPM solution from a private consulting firm. Vancouver, Canada-based consulting firm Copperleaf developed its C55 AIPM (C55) proprietary technology as a platform to develop asset Scalable management systems for large utility companies to integrate real-time data to identify and analyse alternative long-term investment strategies. monitoring The system Landsvirkjun used includes a tracking system, an solutions for investment decision optimization and predictive analytics. Landsvirkjun implemented the system in two phases: hydropower — Replacing the legacy in-house project tracking system with the C55 platform; and plants — Established a new process to capture consistent business case information — from project to project, across the organization. · Vibration Assessing investment scenarios · Air Gap After standardizing a means to evaluate projects in place, Landsvirkjun · Magnetic Flux wanted the ability to analyze how different levels of investment would · Cavitation affect future risk factors. To accomplish this, Landsvirkjun implemented C55’s Investment Brüel & Kjær Vibro, the worldwide leading Decision Optimization capability to help select the optimal set of independent supplier of machine condition projects based on the available budget, and overall value of each project monitoring solutions. to the company. The focus in phase 2 was to implement predictive analytics to provide a long-term view of spend requirements to sustain the infrastructure and assist in the strategic and long-term financial company planning. A core team of people with extensive experience running the company’s power plants held three workshops with representatives from [email protected] finance, operations and other departments across the Landsvirkjun organization to ensure all stakeholders had a say in defining the new www.bkvibro.com processes. The company has been using the system since installing the software in April 2013. http://hrw.hotims.com RS #15

www.hydroworld.com November-December 2015 / HRW 25

1511hrw_25 25 11/11/15 11:52 AM The results The benefits that an Asset Investment Management Platform solution brings to an organization include a combination of both tangible and intangible benefits. For Landsvirkjun, the biggest benefit is that the company now has greater oversight on all investments under consideration than ever before, whereby: — Long-term investment needs are identified on the basis of risk, age and condition. Critical risks are clearly identified so that activities can be undertaken to mitigate those risks before an unplanned outage occurs, and the company can see the extent to which the investment plan will address those risks; — Short-term investment needing proposals are collected in a comprehensive database and assembled in portfolios which are then optimized based upon risk assessments, the objectives of the company and the budgetary and resource constraints at any given time. Project owners can easily present their budget proposals to internal stakeholders in a transparent and well-structured way.

Better, faster, decisions With more complete data that includes recording all types of spend and more accurate data by eliminating version control issues, Landsvirkjun can make better decisions on how to control spend for the entire Energy Division. Having the ability to compare different investment scenarios enables the company to conduct sensitivity and what-if analysis easily for Landsvirkjun headquarters building located in Reykjavík, Iceland. informed decision-making. Moving from multiple Microsoft Excel-based spreadsheets to a single, centralized, multi-user system has enabled more interaction between departments than ever before. Having one source of accurate data ensures employees are using the correct information and are not wasting time searching for data. Documentation has improved considerably because all project owners have to provide data to support their arguments for the need and timing of each investment. By placing a big focus on change management, and taking extra measures such as translating the system into Icelandic, the rollout and adoption has been a success.

Powerful drivers for AIPM Landsvirkjun’s experiences in adopting AIPM techniques are not unique. Some of the most commonly heard benefits include better decisions, compelling business cases and improved execution.

Better decisions Comparing dozens or hundreds of candidate projects and options can be daunting. Programmatic optimization generally leads to higher value portfolios, unlocking up to 30% in extra value.

Compelling business cases Building well documented, bottom-up, transparent investment plans improves the probability of acceptance by regulators and other http://hrw.hotims.com RS #16 stakeholders. Being able to demonstrate the cost of not investing has

26 HRW / November-December 2015 www.hydroworld.com

1511hrw_26 26 11/11/15 11:52 AM rewarded some utilities with budget increases in the order of 20%.

Improved execution Most plans and budgets are out of date the very moment they are approved. The ability to quickly adjust project portfolios based on external or internal changes has allowed utilities to improve their overall project execution rate up to 10%.

Higher productivity Much time is wasted searching for informa- Vatnsfellsstod hydroelectric power station, located in the Highlands of Iceland, at the south tion and updating spreadsheets but enterprise end of lake Þórisvatn. class AIPM solution users report they have experienced productivity gains of up to 20%. both short-term and long-term planning to very well. It helped Landsvirkjun identify a “Quantifying the benefits in terms of hard help us make the best use of our resources. quantifiable starting point and measurable, numbers is not an easy task. How exactly can Overall, it’s given us greater confidence in definable future goals. It is very important to you measure how much risk has been avoided?” our decision making, and our ability to plan keep on developing, and continuously improve Mathiesen asks. for the future.” and review the processes and tools with which “What we do know is this: We’ve aligned Landsvirkjun works. ■ our procedures with best practices outlined Lessons learned in the ISO 55000 asset management stan- Having an external, specialized consultant dard. We now have a transparent picture firm review Landsvirkjun processes, goals and Unnur M. Thorvaldsdóttir is asset manager for Landsvirk- of all of our major asset classes, and can financial plans and guide the company through jun National Power Company of Iceland. Boudewijn Nei- compare different investment scenarios for process-mapping was a concept that worked jens is chief marketing officer at Copperleaf Technologies.

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www.hydroworld.com November-December 2015 / HRW 27

1511hrw_27 27 11/11/15 11:52 AM TECH NOTES

HEA releases global energy roadmap

The Global Energy Roadmap released in late October by the — Facilitating development through public-private partnerships; Hydro Equipment Association is intended to serve as a roadmap — Rewarding hydro for the ancillary services it provides; and for hydropower’s place in the global energy mix. — Embracing the International Hydropower Association’s HEA said it hopes decision makers and policy makers will use Hydropower Sustainability Assessment Protocol. the tool, as they are “under increasing and seemingly contradictory “Mature yet modern, proven yet innovative, established yet full pressures to decrease the cost of electricity, increase the share of of potential: this is hydropower as we know it,” says Dr. Roland renewable sources of energy and ensure a secure supply of energy.” Munch, president of HEA. “Hydropower has a key role to play in The roadmap outlines several steps that must be taken to unlock helping national leaders supply their citizens with clean, sustainable hydropower’s full potential: and reliable electricity.” — Exploiting untapped sources to develop low-cost, renewable HEA’s roadmap, available for download at: www.thehea.org/ and almost emissions-free sources of power; GTR, also emphasizes the role of pumped storage in integrating — Establishing a framework that ensures a level playing field other renewables. HEA was formed in 2001 and represents elec- for all power technologies; tromechanical equipment suppliers from around the world.

Global Energy Storage Database storage projects around the world. Search — Advanced search, which includes proj- now available online options for specific projects include: ect name, service/use cases, ownership model The U.S. Department of Energy offers a — Basic search with a variety of filters and more search options (such as construction Global Energy Storage Database to provide (including technology type, country, rated date, commissioning date, utility type and free information on grid-connected energy power, status and grid interconnection); O&M contractor).

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28 HRW / November-December 2015 www.hydroworld.com

1511hrw_28 28 11/11/15 11:52 AM TECH NOTES

A data visualization option provides charts recognizes sustainable development in all our marketplace while examining their relative such as global project installations over time, activities,” said Brian Molefe, acting chief exec- strength amongst users and relative attraction maps with project sizes marked, and a table on utive of Eskom. “Environmental compliance … amongst non-users. technology type. Pumped storage hydropower impacts operational sustainability. It is critical is by far the largest technology in terms of to maintaining our licence to operate, thereby For more technical news, check out the megawatts of power, with more than 178,000 ensuring security of supply. It also underpins Technology and Equipment tab at MW listed from 343 projects. our principle of zero harm to the environment.” Those who have user accounts can add The Sunday Times Top Brands Survey information to the database on specific proj- looks at brands’ penetration in the ects or policies. Per the website, at www.energystorageex- change.org, all information is vetted through a third-party verification process and data can be exported in Excel or PDF format.

Etalin company in India wins sustainability award The Etalin Hydro Electric Power Company Ltd. received a Global Sustainability Award 2015 - Gold Winner from the Energy and Environment Foundation. The award recognizes the company’s out- standing achievements in sustainability management and was given during the 2015 World Renewable Energy Technology Congress. Etalin Hydro Electric Power is a joint ven- All of your assets need investment ture of Jindal Power Ltd. and the Hydro Power If only life were that simple Development Corporation of Arunachal Pradesh Ltd., a state government-owned enterprise. The company is developing the Asset Investment Planning & Management 3,097 MW Etalin and 22 MW Anonpani Executives in asset intensive organizations are expected by their board and stakeholders projects, both in the Dibang Valley. to fully understand the risks and opportunities related to their asset base. Yet information about assets is often scattered across multiple departments and systems, making it increasingly difficult to decide how to best leverage existing assets and where to invest. Eskom wins award for preserving environment, harnessing resources Copperleaf’s Asset Investment Planning and Management solution, C55, is specifically designed to help asset intensive organizations make risk-informed, value-based investment Eskom won the Green Grand Prix Award at decisions. Aligned with the ISO 55000 asset management standard, it helps organizations the 17th annual Sunday Times Top Brands realize the highest value from their assets, and select future opportunities that provide the greatest return to the organization. Awards for preserving the environment and harnessing the country’s natural resources. Make Higher Value Investment Decisions This is the second year in a row Eskom has won this award, which is given to companies Continuously Improve Performance that have embarked on environmentally Manage Risk Effectively friendly initiatives. Eskom was recognized for its work in Align with ISO 55000 several areas, including developing a diversified energy mix that includes wind, solar, hydro +1 888 465 5323 and pumped storage schemes, a nuclear power www.copperleaf.com station and coal-fired power stations. “We continue to promote a culture that http://hrw.hotims.com RS #19

www.hydroworld.com November-December 2015 / HRW 29

1511hrw_29 29 11/11/15 11:52 AM DAMS & CIVIL STRUCTURES

US$294 million funds emergency repairs at 1,830 MW Kariba hydroelectric facility

In the last quarter of 2015, the Zimbabwean and Zambian govern- Dam plunge pool - to limit scouring and erosion that could ments signed agreements for US$294 million with the European potentially undermine the dam’s foundations - and refurbishing Union (EU), the World Bank, the African Development Bank the spillway and associated infrastructure to improve the dam’s and the Swedish government to finance emergency dam repairs stability and operations. at the 1,830 MW Kariba hydroelectric facility, according to the The report IRM released earlier this year warns that 181 billion World Bank. cubic meters of water from the facility’s reservoir would careen At it’s commissioning in 1960, “the water was only 10-meters- downstream if the dam fails. During a period of 8 to 10 hours, deep [33 ft] at the foot of Kariba Dam, but erosion of this plunge until the flow dissipates, the report posits a wall of water would pool has increased the depth to 90 m [295 ft] and has been wearing hit and likely destroy the dam at the 2,075 MW Cahora Bassa away rock near the dam’s foundations,” according to “Impact of hydroelectric project downstream in Central Mozambique. the Failure of the Kariba Dam,” a report released by the Institute Published reports indicate Moises Machava ,Technical Director of Risk Management (IRM) of South Africa. of Hidroelectrica de Cahora Bassa (HCB), the company that Located on the Zambezi River about 260 miles downstream of operates Cahora Bassa Dam, said HCB has been aware of the Victoria Falls in southeran Africa, the Zambezi River Authority risk to Kariba Dam. (ZRA) operates the project. IRM, along with the EU, said repairs According to Machava, the latest information is that the risk are urgently needed. exists, but is not imminent. “It won’t happen tomorrow, or next “It was considered an emergency and the EU decided to year,” he said. “But if nothing is done, then it will happen, but not mobilize funds as it was important to start the rehabilitation as for another couple of years at least.” soon as possible,” said Philipe Van Damme, the EU ambassador The repairs could take up to a decade to complete, according to to Zimbabwe. Charity Mwansa, ZRA chairperson. “Reshaping of the plunge pool Kariba Dam, at a height of 397 ft (128 m) and a crest length will take three years, while the rehabilitation of the spillway gates of 2,024 ft (617 m), impounds Lake Kariba, the world’s largest will take six years with minimal disruptions to normal operations.” manmade reservoir. The Kariba hydroelectric project has been Machava said HCB does not know when these repairs will central to regional energy security and economic development, begin, but given the urgency of the situation, he expected that date the report said. to be later this year or in early 2016. HCB expects to be briefed on Repair and rehabilitation will include reshaping the Kariba this at the next meeting of the dam operators in early December.

ACT’s Icon Water in Australia will manage forming the Corin Reservoir, which has a 1998, Australian dam safety officials found a the US$3 million Corin Dam rehabilitation surface area of about 780 acres. Water from 50-mm-wide gap between Corin Dam’s clay State-owned Icon Water Ltd. is managing the Corin Reservoir eventually reaches Australia’s core and the spillway bridge right abutment. Corin Dam rehabilitation project. capital city, Canberra. Canberra sources major According to published reports, during a Located on the Cotter River in Namadgi amounts of its water from three dams on the dam assessment in 2007, Corin Dam officials National Park in the Australian Capital Cotter River — Corin, Bendora (upstream) determined conditions at the gap promoted Territory (ACT), Australia, the projected and Cotton (further upstream); and Googong a piping risk. In terms of dam walls, piping cost of the rehabilitiation to the Corin Dam Dam on the Queanbeyan River. occurs when water seepage causes dam wall is around US$3 million. ACT is an enclave within New South material to erode. The work will ensure integrity of the dam’s Wales in southeast Australia and the gov- spillway, the crest of its upstream wall and the ernment of ACT owns Icon Water Ltd. For more dams and civil structures news, road atop the dam. Icon Water hired Melbourne-based GHD see the Hydro Project Activity tab at Corin Dam is 243 ft high and 925 ft to investigate and design improvements to long. The earthen dam wall is built on a rock substantially mitigate the identified risks. foundation and impounds 71 billion liters During construction of a crest wall in

30 HRW / November-December 2015 www.hydroworld.com

1511hrw_30 30 11/11/15 11:52 AM SMALL HYDRO

plant, including the addition of a 250 kW StreamDiver unit manufactured by Voith. Archimedes Screw begins StreamDiver units consist of a permanent magnet generator embedded in an oil-free operation near Kilnhurst bulb unit and have few moving parts, making it attractive from an environmental perspective. A 260 kW plant near Kilnhurst, England, has been put into operation. Developed by Barn Energy and Yorkshire Hydropower, the plant is located on the Reunion Island seeks to link irrigation River Don and generates power using a pair of Archimedes Screws. systems, add hydropower The small hydropower project also includes a number of measures intended to Reunion Island, a French overseas depart- improve eel and fish passage, with the ultimate goal of increasing wildlife populations ment off the east coast of Africa, is looking that have been hampered for more than a century by weirs along the waterway. to add turbines to an interconnection of two U.K.-based Barn Energy said it is currently working to develop additional small irrigation works. hydroelectric projects near Kirkthorpe and Knottingley. Both are located in the West The 100 kW plant would be located on Yorkshire area of England. the connection of the west coast irrigation network with the network of the Cilaos Arm of the Saint-Etienne River. More small hydro slated for Africa installed capacity of 200 MW and an invest- Hydroneo Afrique and African Infrastructure ment of US$500 million over the next five years. For more small hydro news, Investment Managers are partnering to see the Hydro Project Activity tab at develop a pipeline of small hydropower plants Voith installs StreamDiver in Sweden across Africa. Swedish utility Skelleftea Kraft AB has These projects are expected to represent an completed its rehabilitation of the Bruksfors

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1511hrw_31 31 11/11/15 11:52 AM MARINE HYDROKINETICS

Oosterschelde tidal turbine array Strukton was responsible for project ITP on second-generation floating tidal tur- installed in the Netherlands management, working with Mammoet bine platform design that, if successful, would Tocardo Tidal Turbines has installed its com- and Zeeland companies Istimewa allow site-specific deployment in coastal and mercial demonstrator 1.2 MW tidal array Elektrotechniek, Van der Straaten and inland marine environments. of five T2 turbines in the Eastern Scheldt Hillebrand on the installation. Said ITP Offshore Group Manager, Joe storm surge barrier (Oosterschelde barrier) in Measuring nearly 8 km in length, Hussey: “Designing a floating platform for the Netherlands. At a cost of about US$12.4 the Oosterschelde barrier connects the Instream’s vertical axis turbine opens up vast million, Tocardo said this installation is the Zeeland Islands of Schouwen-Duiveland and market potential in the UK and further afield. largest tidal energy project in the Netherlands Noord-Beveland and can be closed against This is a significant project within the tidal as well as the world’s largest commercial tidal storm surges. stream industry.” array installation. The T2 turbines are fitted with bi- NRC to fund inland and offshore HZ Windpower MHK study approved directional rotor blades, generating electricity MHK turbine development China’s Chongqing Haizhuang Windpower from the ebb and flow of the tide through the The National Research Council of Canada, Equipment Co. Ltd has received approval storm surge barrier. The turbines consist of a through its Industrial Research Assistance from the Ministry of Science and Technology permanent magnet direct drive generator and Program, is providing financial support to of Chongqing Municipality for its study on patented reversible rotor blade design. Canada-based Instream Energy Systems, key technology and model testing for marine The 50 meter-long by 20 meter-wide tidal and IT Power Consulting (ITP), based in hydrokinetic power. power plant was placed on a floating pontoon Bristol, UK, to develop a floating platform According to the company, the study designed and built by Netherlands-based for tidal turbines. includes: Huisman. The array is combined with lifters Instream Energy Systems’ scalable vertical — The working principal of a MHK gen- and installed between pillars in place under axis hydrokinetic turbines, was co-developed erator and its development road map; the Oosterschelde barrier. with BAE Systems. Instream is working with — Hydrodynamic simulation and blade

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1511hrw_32 32 11/11/15 11:52 AM MARINE HYDROKINETICS

design; and, Indonesia’s PLN signs agreement of additional power requirements, especially — Tests of a scaled model, vertical axis drag to develop commercial tidal on remote islands,” PLN president director force blade that has a top suspension support. PT Perusahaan Listrik Negara (PLN) and Sofyan Basir said. ■ SBS Intl. Ltd. have signed a memorandum France inaugurates Le Croisic test site of understanding for a tidal stream project. For more ocean/tidal/stream news, France has officially inaugurated the Site d’ To be built in phases beginning with an see the Hydro Project Activity tab at Experimentation en Mer (SEM-REV) at Le initial 12 MW plot and scaling up to 140 Croisic, Brittany, on the country’s west coast. MW at a total cost of US$350 million, the The site will test marine hydrokinetic (MHK) project “will contribute toward the fulfillment energy systems and floating wind turbines in open sea conditions. Beginning this September, three different MHK energy technologies are scheduled for testing at the site, located 12 nautical miles off Le Croisic. SEM-REV offers a restricted area connected to the mainland grid via an 8-MW cable and a set of environmental monitoring instruments. Four test slots are connected to a central subsea hub. Engineering university Ecole Centrale de Nantes (ECN) monitors SEM-REV operations from a station in Le Croisic, in coordination with France Energies Marines, through France’s National Centre for Scientific Research (CNRS). According to SEM-REV, the site would also test materials and equipment for moor- ing, umbilical and monitoring systems for The Most Compact use by MHK technologies. The site’s specific research programs focus on environmental Transformer Relay impact, safety and security assessments, and could also be used to test deployment and SEL-787-3/-4: Flexible, sensitive, and secure protection. maintenance procedures. Now, a single platform gives you the protection you need in a form factor that ﬁts most space- UK Crown Estate launches small- constrained applications. scale MHK leasing program • Protects up to four-terminal differential 7.56 in The Crown Estate, owners of the United applications for maximum ﬂexibility. (192 mm) Kingdom seabed, has launched a program • Accommodates up to three restricted earth fault elements to detect more internal faults. of offshore leasing for small-scale marine • Includes dual-slope differential protection hydrokinetic (MHK) testing and demon- 5.67 in with harmonic blocking and restraint for (144 mm) stration projects of less than 3 MW. sensitive and secure operation. Sian Wilson, technology manager for the Crown Estate, explained: “With the Find out how the SEL-787-3/-4 is all the differential introduction of new leasing for small-scale transformer protection you need.

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34 HRW / November-December 2015 www.hydroworld.com

1511hrw_34 34 11/11/15 11:52 AM PROFESSIONAL LISTINGS

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www.hydroworld.com November-December 2015 / HRW 35

1511hrw_35 35 11/11/15 11:52 AM AD INDEX

RS# COMPANY PG# RS# COMPANY PG# 25 Andritz Hydro GmbH www.andritz.com OBC International Marine Renewable Energy Conference 24 (IMREC)/Marine Energy Technology Symposium (METS) IBC 15 Bruel & Kjaer Vibro GmbH www.bkvibro.com 25 www.waterpowerweek.com

19 CopperLeaf Technologies Inc www.copperleafgroup.com 29 14 Nord-Lock www.nord-lock.com 23 3rd Dam-Hydropower Plant and Hydraulic Structures 16 Oiles Corporation www.oiles.co.jp 26 9 Construction, Production Operation, Automation, 17 Technology and Equipment Fair www.powernextfair.com 23 Schweitzer Engineering Laboratories Inc www.selinc.com 33 12 GE Measurement & Control www.gemeasurement.com 21 13 Smagon www.smagon.com.br 23 21 Gilbert Gilkes and Gordon www.gilkes.com 32 10 Sotek and Belrix Industries Inc www.sotek.com 19 1 HCS Hydro Component Systems LLC IFC www.hydrocomponentsystems.com 4 Sulzer Management Ltd www.sulzer.com 7 3 Hydro Tech Inc www.hydrotech-inc.ca 5 17 Tes Vestin SRO www.tes.cz 27 8 Ingeteam S A www.ingeteam.com 15 Toshiba America Energy Systems Corporation 7 13 18 Sauer Compressors www.sauercompressors.com 28 www3.toshiba.co.jp/power/index.htm

22 Koncar Generators and Motors Inc www.koncar-gim.hr 32 2 Voith Hydro www.voithhydro.com 3

20 Litostroj Power www.litostrojpower.eu 31 11 Wasserkraft Volk AG www.wkv-ag.com 19

5 MWH www.mwhglobal.com 9 6 Weir American Hydro www.weirpowerindustrial.com 12

*IFC=Inside Front Cover, IBC=Inside Back Cover, and OBC=Outside Back Cover

PROFESSIONAL LISTINGS

— Continued from page 18

have condition monitoring systems for units

with TMMax levels greater than three. There are available on the market control systems that offer better TM functionality

for hydro applications with a TMMAX of five

and TMRES 0.1 and 0.25. Improving of the

TMRES allows for more precise monitoring configurations, and consequently, assures more sensitive system reactions in the case of technical condition changes in a hydro turbine.

Using control systems with better TMRes Hydro Turbines ensures the monitoring system has higher Place your exposure to real changes of an asset’s condition. The elimination of false alarms gen- company erated by typical asset condition vibrations and symptoms greatly improves an operator’s among other www.mavel.cz actions during real problems with a turbine professionals generator’s mechanical integrity. ■ on this page Benesov, CZ Boston, MA USA +420 317 728 483 +1 617 242 2204 [email protected] [email protected] Call +44-1992-656641 Ryszard Nowicki is a mechanical engineer for General

Electric’s Measurement and Control division.

36 HRW / November-December 2015 www.hydroworld.com

1511hrw_36 36 11/11/15 11:52 AM April 25-27, 2016 Capital Hilton • Washington, D.C. www.waterpowerweek.com

http://hrw.hotims.com RS #24

Produced by: Flagship Media Sponsor:

1511hrw_C3 3 11/11/15 11:52 AM Large Hydro Storage meets the peak

ANDRITZ HYDRO is a global supplier Francis unit are installed in a 60 m deep pit of electromechanical equipment and on the right river bank, not far from the ex- services (ìfrom water-to-wireî) for hy- isting powerhouse. With a runner weight of dropower plants. The hydropower plant almost 100 tonnes and a large generator Bemposta is located in the middle section diameter, this turbine generator set is one of the Rio Douro in Portugal. The existing of the largest of its type in Europe. dam and the Bemposta I powerhouse were We focus on the best solution ñ ìfrom built in the early 1960s. The new 193 MW water-to-wireî.

ANDRITZ HYDRO GmbH Eibesbrunnergasse 20, 1120 Vienna, Austria Phone: +43 50805 0, Fax: +43 50805 51015 [email protected] http://hrw.hotims.com RS #25 www.andritz.com

1511hrw_C4 4 11/11/15 11:52 AM