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Vol2 Case History English(1-206) Renewal & Upgrading of Hydropower Plants IEA Hydro Technical Report _______________________________________ Volume 2: Case Histories Report March 2016 IEA Hydropower Agreement: Annex XI AUSTRALIA USA Table of contents㸦Volume 2㸧 ࠙Japanࠚ Jp. 1 : Houri #2 (Miyazaki Prefecture) P 1 㹼 P 5ۑ Jp. 2 : Kikka (Kumamoto Prefecture) P 6 㹼 P 10ۑ Jp. 3 : Hidaka River System (Hokkaido Electric Power Company) P 11 㹼 P 19ۑ Jp. 4 : Kurobe River System (Kansai Electric Power Company) P 20 㹼 P 28ۑ Jp. 5 : Kiso River System (Kansai Electric Power Company) P 29 㹼 P 37ۑ Jp. 6 : Ontake (Kansai Electric Power Company) P 38 㹼 P 46ۑ Jp. 7 : Shin-Kuronagi (Kansai Electric Power Company) P 47 㹼 P 52ۑ Jp. 8 : Okutataragi (Kansai Electric Power Company) P 53 㹼 P 63ۑ Jp. 9 : Okuyoshino / Asahi Dam (Kansai Electric Power Company) P 64 㹼 P 72ۑ Jp.10 : Shin-Takatsuo (Kansai Electric Power Company) P 73 㹼 P 78ۑ Jp.11 : Yamasubaru , Saigo (Kyushu Electric Power Company) P 79 㹼 P 86ۑ Jp.12 : Nishiyoshino #1,#2(Electric Power Development Company) P 87 㹼 P 99ۑ Jp.13 : Shin-Nogawa (Yamagata Prefecture) P100 㹼 P108ۑ Jp.14 : Shiroyama (Kanagawa Prefecture) P109 㹼 P114ۑ Jp.15 : Toyomi (Tohoku Electric Power Company) P115 㹼 P123ۑ Jp.16 : Tsuchimurokawa (Tokyo Electric Power Company) P124㹼 P129ۑ Jp.17 : Nishikinugawa (Tokyo Electric Power Company) P130 㹼 P138ۑ Jp.18 : Minakata (Chubu Electric Power Company) P139 㹼 P145ۑ Jp.19 : Himekawa #2 (Chubu Electric Power Company) P146 㹼 P154ۑ Jp.20 : Oguchi (Hokuriku Electric Power Company) P155 㹼 P164ۑ Jp.21 : Doi (Chugoku Electric Power Company) P165 㹼 P177ۑ Jp.22 : Kamishiiba (Kyushu Electric Power Company) P178 㹼 P185ۑ Jp.23 : Kawabaru (Kyushu Electric Power Company) P186 㹼 P192ۑ Jp.24 : Tagokura (Electric Power Development Company) P193 㹼 P206ۑ Jp.25 : Okawachi (Kansai Electric Power Company) P207 㹼 P215ۑ Jp.26 : Kagehira (Shikoku Electric Power Company) P216 㹼 P223ۑ Jp.27 : Shin-Onagatani #1 (Toyama Prefecture) P224 㹼 P231ۑ Jp.28 : Kawaguchi / Sasamagawa Dam(Chubu Electric Power Company) P232 㹼 P238ۑ Jp.29 : Saigawa (Chubu Electric Power Company) P239 㹼 P247ۑ Jp.30 : Okuizumi (Chubu Electric Power Company) P248 㹼 P254ۑ Jp.31 : Jinzuukawa #1,#2,Hotokebara (Hokuriku Electric Power Company) P255 㹼 P265ۑ Jp.32 : Shin-Taishakugawa (Chugoku Electric Power Company) P266 㹼 P273ۑ Jp.33 : Nagasawa (Shikoku Electric Power Company) P274 㹼 P280ۑ Jp.34 : Yusuharagawa #3 (Shikoku Electric Power Company) P281 㹼 P287ۑ Jp.35 : Kawabegawa #1 (Kyushu Electric Power Company) P288 㹼 P295ۑ Jp.36 : Okutadami,Ohtori (Electric Power Development Company) P296 㹼 P306ۑ Jp.37 : Kumaushi (Electric Power Development Company) P307 㹼 P315ۑ Jp.38 : Totsugawa #1 (Electric Power Development Company) P316 㹼 P321ۑ Jp.39 : Okukiyotsu #2(Electric Power Development Company) P322 㹼 P330ۑ Jp.40 : Nagatono (Kansai Electric Power Company) P331 㹼 P336ۑ Jp.41 : Hanakawa (Tokyo Electric Generation Company) P337 㹼 P343ۑ Jp.42 : Ishioka #1 (Tokyo Electric Generation Company) P344 㹼 P351ۑ Jp.43 : Togagawa #2 (Kansai Electric Power Company) P352 㹼 P357ۑ Jp.44 : Shin-Maruyama / Shin maruyama Dam (Kansai Electric Power Company) P358 㹼 P362ۑ Jp.45 : Kumagawa #1 (Tokyo Electric Power Company) P363 㹼 P374ۑ ࠙Norwayࠚ Nw. 1 : Embretsfoss #4 (EB Kraftproduksjon AS) P375 㹼 P386ۑ Nw. 2 : Hemsil #2 (E-CO Energi AS) P387 㹼 P395ۑ Nw. 3 : Hemsil #3 (E-CO Energi AS) P396 㹼 P408ۑ Nw. 4 : Hol #1 ((E-CO Energi AS) P409 㹼 P421ۑ Nw. 5 : Hunsfos East (Agder Energi AS) P422 㹼 P430ۑ Nw. 6 : Iveland #2 (Agder Energi AS) P431 㹼 P441ۑ Nw. 7 : Ranasfoss #3 (Akershus Energi AS) P442 㹼 P456ۑ Nw. 8 : Kongsvinger (Eidsiva Vannkraft) P457 㹼 P467ۑ Nw. 9 : Rendalen (Opplandskraft DA) P468 㹼 P479ۑ ࠙Finlandࠚ Fi. 1 : Pirttikoski (Kemijoki Oy) P480 㹼 P488ۑ ࠙Australiaࠚ Au. 1 : Poatina (Hydro Tasmania) P489 㹼 P497ۑ Au. 2 : Tungatinah (Hydro Tasmania) P498 㹼 P506ۑ ࠙New Zealandࠚ NZ. 1 : Benmore (Meridian Energy) P507 㹼 P516ۑ NZ. 2 : Waitaki (Meridian Energy) P517 㹼 P528ۑ ࠙United Statesࠚ US. 1 : Abiquiu (Country of Los Alamos) P529 㹼 P533ۑ US. 2 : Boulder Canyon (Boulder city) P534 㹼 P539ۑ US. 3 : Cheoah (Alcoa Inc) P540 㹼 P544ۑ US. 4 : North Fork (Tacoma city) P545 㹼 P551ۑ US. 5 : Fond du Lac (Minnesota Power) P552 㹼 P555ۑ US. 6 : Flaming Gorge (United States Bereau of Reclamation) P556 㹼 P560ۑ US. 7 : Rhodhiss (Duke Energy Corporation) P561 㹼 P566ۑ ࠙Brazilࠚ Br. 1 : Estreito (ELETROBRAS FURNAS) P567 㹼 P574ۑ ࠙Franceࠚ Fr. 1 : Sisteron (Electricite de France) P575 㹼 P580ۑ ࠙Switzerlandࠚ Sw. 1 : Veytaux (Alpiq Suisse SA) P581 㹼 P589ۑ ࠙Chinaࠚ Ch. 1 : Gezhouba (China Yangtze Power Company) P590 㹼 P598ۑ Jp.01_Houri #2 ANNEX XI Renewal & Upgrading of Hydropower Plants Format for the 2nd Round Data Collection (Definition of Case Histories) Category and Key Points Main: 1-a) Energy Policies of Countries and States Sub: 1-b) Investment Incentives (Feed-in-Tariff (FIT), Renewable Portfolio Standard (RPS), Subsidies, Financial Assistance, Tax Deductions, etc. 2-a) Technological Innovation & Deployment Expansion of Electro-Mechanical (E/M) Equipment Project Name: Houri No.2 Hydropower Project Name of Country (including State/Prefecture): Japan, Miyazaki Prefecture Implementing Agency/Organization: Miyazaki Prefecture, Public Enterprise Bureau Implementing Period: from 2010 to 2012 Trigger Causes for Renewal and Upgrade: (C) Needs for higher performance Keywords: Power generation by ecological flow discharge Abstract: In order to effectively use ecological flow discharge which is aimed at maintaining the river environment, the construction of the hydroelectric power station which produces a small power output was planned, and the operation was started in April 2012. This power station has contributed to the prevention of global warming though the effects are small. - 1 - 1. Outline of the Project (before Renewal/Upgrading) The Houri Power Station and the Kami-Houri Power Station were constructed in the scheme of the Hourigawa general development project which was started in 1969, and its operation began in 1973. After that, ecological flow discharge has been mandated so as to maintain the river environment, etc., and in 2001 ecological flow began. Construction of the Houri No.2 Power Station was planned for the purpose of using ecological flow discharge effectively and preventing global warming, and the construction was started in December 2010 and the operation began in April 2012. Locations of dam and powerhouse, and their specifications are shown in Figure 1 and Table 1. Power station using environmental flow from Houri dam Intake Dam Administ. Build. Houri No.2 Powerhouse Headrace tunnel Adit tunnel Houri No.1 Power station Figure 1 General Plan Table 1 Specifications of Houri No.2 Power Station Items Specifications Name of power station Houri Second Power Houri Power Station Station (new construction) (existing) Type Horizontal Francis turbine Vertical Francis turbine Maximum output 35 kW 16,800 kW Powerhouse Effective head 34.75 m 251.70 m Maximum plant discharge 0.14 m3/s 8m3/s Revolving speed 1,200 r/min 720 r/min Power voltage 440 V 6,600 V Annual electricity 209 MWh 52,569 MWh generation - 2 - 2. Description of the Renewal and Upgrading of the Project 2.1 Trigger Causes and Drivers for Renewal and Upgrading (1) Condition, capability, influence of risk and others (None) (2) Improvement of value (functions) (C) - (a) Needs for higher performance – expansion (3) Necessity in market (None) 2.2 Process to Identify and Define Renewal and Upgrade Work Measure April 1973: Operation at Houri Power Station started March 2002: Facilities for ecological flow discharge was completed; discharge started 2008: Survey on Houri No.2 Power Station started August 2010: Explanatory meeting with stakeholder et al. September 2010: Water rights were provided December 2010: Construction of Houri No.2 Power Station started December 2011: Certified through RPS system April 2012: Operation st Houri No.2 Power Station started. 2.3 Description of Work Undertaken (detail) 1-a) Energy Policies of Countries & States 1-b) Investment Incentives (Feed-in-Tariff (FIT), Renewable Portfolio Standard (RPS), Subsidies, Financial Assistance, Tax Deductions, etc. As one of the strategic policies of 2010, Miyazaki Prefecture put in place a goal which aims at achieving a low carbon society by expanding and promoting the use of new environment- friendly energy, maximizing characteristics of Miyazaki region. Based on this goal, the “Project of new energy introduction by Public Enterprise Bureau” which aims to introduce photovoltaic generation and micro hydropower generation which utilizes ecological flow discharge from dams has started. As a part of this policy, electric power generation using ecological flow discharge, which had not been used for generation, was determined to be introduced. In the process of introduction, “Grant for promotion of regional new energy deployment” was provided and reduction of the initial investment cost was made. Generating equipment was given a certification by the RPS system which is a necessary condition for receiving the grant mentioned above. 2-a) Technological Innovation & Deployment Expansion of Electro-Mechanical (E/M) Equipment The Houri Dam had been constructed for the purpose of flood control, power generation and industrial water supply, so water level of the reservoir is not constant. In Houri Dam, ecological flow discharge has been through a pipeline which is branched from the headrace tunnel of Houri Power Station. Also, depending on the reservoir’s water level, opening degree of a gate which is installed at the outlet of the pipeline was controlled manually at regular intervals, resulting in discharging much more than required. - 3 - While generating electricity by using the ecological flow at Houri No.2 Power Station, it is possible to increase water for electricity producing at Houri Power Station if the ecological flow discharge is automatically controlled within the required amount.
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