April 2017 2017 | 1 a REPUTABLE ENGINEERING POWERHOUSE of AFRICAN HERITAGE
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POWER THE OFFICIAL PUBLICATION OF THE SOUTH AFRICAN INSTITUTE OF ELECTRICAL ENGINEERSwattnow | APRIL | april 2017 2017 | 1 A REPUTABLE ENGINEERING POWERHOUSE OF AFRICAN HERITAGE • Motor Control Centres • Containerised Control Centres • Power Distribution Boards • Sub-Distribution Boards • PLC/Automation Panels • Electronic Drive Panels • Control Desks • General Control Panels • E.P.C. • Project Consulting Contact Megan Schoeman 011 979 4100 [email protected] www.lvsb.co.za 2 | wattnow | april 2017 LVS ADVERT.indd 1 13/03/2017 09:11 A REPUTABLE ENGINEERING POWERHOUSE OF AFRICAN HERITAGE UTILITIES VS GENERATORS 20 EMBEDDED GENERATORS NEEDS TO BE CONNECTED FEATURES LIGHTNING PROTECTION 36 PV SYSTEMS WILL FORM INTEGRAL PART OF THE FUTURE 20 ESKOM'S DEATH SPIRAL 42 MOTHBALLING POWER STATIONS 46 • Motor Control Centres SAVE THE TURBO ALTERNATORS 48 • Containerised Control Centres 36 • Power Distribution Boards • Sub-Distribution Boards • PLC/Automation Panels • Electronic Drive Panels • Control Desks WATTSUP 42 • General Control Panels 8 • E.P.C. CALENDAR • Project Consulting 60 WATT? 62 LOOKING BACK... APRIL 64 64 Contact Megan Schoeman 011 979 4100 [email protected] www.lvsb.co.za SAIEE @saiee wattnow | april 2017 | 3 LVS ADVERT.indd 1 13/03/2017 09:11 MANAGING EDITOR Minx Avrabos | [email protected] TECHNICAL EDITORS Derek Woodburn Jane-Anne Buisson-Street April is here, the days are becoming CONTRIBUTORS shorter and the nights longer, which J Alberts means our power consumption, will J de Kock T Blom in all probability increase. Eskom M Cary has really come to the party for the D Basson consumer and hopefully there will J Buisson-Street be no loadshedding - which seems to be something of the ill-forgotten EVENTS past. Gerda Geyer | [email protected] This issue of wattnow features Power. Our first feature article is “When CPD & COURSE ACCREDITATION utilities have no knowledge of connected embedded generators” (pg20), Sue Moseley | [email protected] in which Prof Jan de Kock and Jaco Alberts explain what happens when MEMBERSHIP & TECHNOLOGY LEADERSHIP free-loaders plug into the grid. Ansie Smith | [email protected] Self-generated electricity is generally cheaper and provides a high ADVERTISING degree of independence from the grid. However, these systems are Avenue Advertising exposed to all weather conditions and are vulnerable to lightning. Read T 011 463 7940 | F 086 518 9936 | E [email protected] more on page 36. PUBLISHER South African Institute of Electrical Engineers Jacob Machinjike has recently been inaugurated as the SAIEE’s 2017 President. The May issue of wattnow will feature his presidential address SAIEE HEAD OFFICE P.O. Box 751253 | Gardenview | 2047 and everything about the SAIEE you did not know. The May issue will T 011 487 3003 | F 011 487 3002 also be available at the African Utility Week, taking place from 16 - 18 E [email protected] | W www.saiee.org.za May in Cape Town. Come visit our stand and meet us. Office Hours: 8am-4pm The 2017 SAIEE Smart Grid Conference will be taking place on 19 - 21 September. Registration is now open and we have an awesome line-up of speakers; visit www.saiee-smartgrid.co.za to register and qualify for a very nice early bird discount. Seats are limited, so book SAIEE 2017 OFFICE BEARERS now to avoid disappointment! Early bird discounts close 30 April 2017. President Jacob Machinjike Deputy President Hendri Geldenhuys Senior Vice President George Debbo Herewith the April issue. Enjoy the read! Junior Vice President Sy Gourrah Immediate Past President T.C. Madikane Honorary Treasurer Viv Crone Honorary Vice President Ben Kotze Chief Executive Officer Stan Bridgens ISSN: 1991-0452 South African Institute of Electrical Engineers. All material is strictly copyright and all rights are reserved. Reproduction without permission is forbidden. The views expressed in this publication are not necessarily those of the SAIEE. E&OE Visit www.saiee.org.za to answer the questions 4 | wattnow | april 2017 related to these articles to earn your CPD points. wattnow | april 2017 | 5 2016 SAIEE PRESIDENT'S REPORT It is recognised by the Engineering year, resulting in a total of 16 Bursaries TC MADIKANE Council of South Africa (ECSA) as a holders. It is my desire that we continue 2016 SAIEE PRESIDENT Voluntary Association in terms of Section with that positive trend, as I believe there 25(3) of the act. My theme for 2016 was is no finer way to contribute to a better #ploughback and #makeithappen. future to our country. As the SAIEE, it is It gives me pleasure important, that we ensure that we continue Keeping in line with that theme, I attended to produce future Electrical Engineers, to present the SAIEE 66 functions/events in my capacity as and really #makeithappen. Annual Report and the SAIEE President. I made sure that Financial Statement I networked with other stakeholders I am also happy to report that our revenue to make SAIEE visible. My greatest for the last financial year, for both for for 2016. On the 5th of memories of the year were the interactions membership and CPD increased by 18% April 2016, I was given that I had with all the Centres and Student and 39% respectively, compared to 2015. Chapters. I also believe that the good Well done to the CEO and his team, the honour of taking up relationship SAIEE has with ECSA to date especially considering the continuing the prestigious position is worth noting. No wonder that the new tough economic conditions under which ECSA Council is so well represented by we operate. Of course, the beneficiaries of as the President of the Electrical Practitioners, in six out of eight the CPD courses are our members and I South African Institute High Impact Committees we have at least am glad that all regions are able to share of Electrical Engineers. one Electrical Practitioner representative. in the CPD courses. Unfortunately, the publication revenue indicates a downward The SAIEE is a learned It is said that a photo speaks a thousand trend compared to 2015. I am well aware institute with more than words and I have attached photos of some though, that the Publication team is of the events that I attended. working hard to come up with innovative 7000 members globally. ways of dealing with Wattnow and ARJ FINANCES Our Association is not for gain, but to I want to extend my appreciation to ensure that we serve and provide value Viv Crone, Honorary Treasurer and our members. I am pleased that we have Stan Bridgens, CEO, for their dedicated increased the number of bursaries this management of the financial affairs of 6 | wattnow | april 2017 the SAIEE. The Institute is in a very sound Our future members are the youth, link his topic with the day-to-day events of financial position, and the details will be and therefore need to be nutured more Electrical Engineering Practitioners. covered under the report of the Honorary innovatively and sometimes even using Treasurer. unconventional approaches. In 2016, Our Guest Speaker at the 65th Bernard we launched the Student Chapter in Price Memorial Lecture was Professor MEMBERSHIP Mangosuthu University of Technology Tshilidzi Marwala, Deputy Vice Chancellor: Those who attended my inauguration will (MUT). I intend to continue to be active in Research, Internationalization and the remember that one of my ambitious goals KwaZulu-Natal (KZN) Centre, especially Library of the University of Johannesburg. was to increase SAIEE membership by in ensuring that Student Chapters in that This event was attended by more than 150 20%. I am proud to report that our figures province are active in growing membership. guests in Johannesburg and they were indicate an increase of just over 8%. The thrilled by his topic, “Fourth Industrial increase in numbers was achieved through EVENTS Revolution; Artificial Intelligence and various strategies, including visibility on There were number of events that took place Society”. social media, posting activities on the day in 2016/17. Thank you to the collective of the event in our website and facebook effort of the various sub-committees of The Banquet is one of the highlights – always keeping members informed of Council, who organised these events. I of any President, and I was pleased to SAIEE happenings. We worked very closely would like to single out three prestigious present awards to a crop of well deserving with ECSA to access those registered events. individuals. We had such a good quality Electrical Practitioners who are not yet of nominations, and the Panel had the members of SAIEE. I believe that the fruits The Presidential Invitation Lecture took mammoth task of selecting from this of that exercise will be further realised in place in May 2016, at the University of large pool. We had two recipients of the future. Johannesburg, and the Guest Speaker President’s Awards for 2016. They are both was Professor Thokozani Majozi. He is a individuals who are well respected in the T/he interest Group in East London has been full professor in the School of Chemical industry, Dr Rob Steven, President of Cigre revived and currently has approximately and Metallurgical Engineering at Wits and Mr Sicelo Xulu, Managing Director of 80 members. East London has electrical University, where he also holds the City Power. practitioners in the automotive industry NRF/DST Chair in Sustainable Process (i.e. Mercedes Benz Nissan, Volkswagen, Engineering. His topic was “A Process STRateGIC OBJECTIVE Ford and General Motors), Eskom, Buffalo Systems Engineering Approach To It is good governance to review the strategy City Municipality, Walter Sisulu University Synthesis And Design Of Sustainable of any organization or entity. EXCO took and Consulting Engineers amongst others. Processes”.