Experimental Study of High Frequency Impulse Overvoltages at Sayano-Shushenskaya HPP

  • Ruslan K. BORISOV
  • Maksim N. SMIRNOV
  • Andrey V. GOLDUN
  • Vasiliy V. BELOBORODOV
  • Nikita A. IVANOV
DOI: https://doi.org/10.24160/0013-5380-2023-1-36-43
Keywords: impulse high frequency overvoltages, experimental study, protection devices

Abstract

High-frequency switching overvoltages with an oscillation frequency of up to several MHz are most dangerous for power transformers and cable bushings with XLPE insulation. A working group in charge for studying the influence of high-frequency impulse overvoltages on the operational reliability of power transformers has been established within the CIGRE framework. Experimental studies of high-frequency impulse overvoltages in the 500 and 15.75 kV networks at the Sayano-Shushenskaya HPP were carried out. A new digital recording system equipped with contactless capacitive sensors was used for measuring impulse overvoltages. By using such recording system, it became possible to obtain data on the overvoltages experienced simultaneously by cable bushings and power transformers on the 500 and 15.75 kV voltage sides. The study results have shown that the highest peak values of high-frequency overvoltages are induced by switching operations of disconnectors in the 500 kV GIS. The overvoltages emerging in the 500 kV network are transferred to the 15.75 kV voltage level via the capacitances between the 500/15.75 kV transformer windings. The resulting overvoltage level may be more than a factor of ten higher than the amplitude value of the nominal 15.75 kV voltage. An analysis model was developed in the ATP-EMTP software, which has been verified against the experimental data. The accomplished numerical analyses and experiments have shown that the use of RC circuits is the most efficient protection measure against high-frequency overvoltages.

Author Biographies

Ruslan K. BORISOV

(National Research University "Moscow Power Engineering Institute", Moscow, Russia) – Leading Researcher of the High Voltage Engineering and Electrophysics Dept., Cand. Sci. (Eng.).

Maksim N. SMIRNOV

(LLC "Electrical Engineering: Science and Practice Scientific and Production Company ", Moscow, Russia) – Deputy General Director.

Andrey V. GOLDUN

(National Research University «Moscow Power Engineering Institute», Moscow, Russia) – Engineer of the High Voltage Engineering and Electrophysics Dept.

Vasiliy V. BELOBORODOV

(Branch of PJSC RusHydro – Sayano-Shushenskaya HPP named after
P.S. Neporozhny, Krasnoyarsk, Russia) – Head of the Equipment Monitoring Dept.

Nikita A. IVANOV

(Branch of PJSC RusHydro – Sayano-Shushenskaya HPP named after P.S. Neporozhny, Krasnoyarsk, Russia) – Engineer of the Equipment Monitoring Dept.

References

1. Кадомская К.П., Лавров Ю.А., Рейхердт А.А. Перенапряжения в электрических сетях различного назначения и защита от них. Новосибирск: Изд-во НГТУ, 2004, 368 с.
2. Техника высоких напряжений / Под ред. Д.В. Разевига. М.: Энергия, 1976, 488 с.
3. Базуткин В.В. и др. Перенапряжения в электрических системах и защита от них. СПб.: Энергоатомиздат, 1995, 316 с.
4. СТО 56947007-29.240.01.221-2016. Руководство по защите электрических сетей напряжением 110–750 кВ от грозовых и внутренних перенапряжений, 2016, 46 с.
5. Методические указания по ограничению высокочастотных коммутационных перенапряжений и защите от них электротехнического оборудования в распределительных устройствах 110 кВ и выше. М.: СПО ОРГРЭС,1998, 26 с.
6. Кадомская К.П. Перенапряжения в сетях среднего и высокого напряжения. – Новости электротехники, 2009, № 2(56), с. 12–14.
7. Шейко П.А. Трансформаторы высокого напряжения. Повреждения вследствие коммутационных перенапряжений. – Новости электротехники, 2013, № 1(79), с. 22–25.
8. Лавров Ю.А. и др. Перенапряжения при коммутациях блочного трансформатора 500 кВ элегазовым выключателем. – Электро, 2010, № 6, с. 24–27.
9. Невретдинов Ю.М., Фастий Г.П. Исследование высокочастотных перенапряжений и способы их ограничения. – Научно-технические ведомости СПбГПУ, 2010, № 1, с. 244–250.
10. Зильберман В.А. Предотвращение повреждений трансформаторов на электростанциях с укрупненными энергоблоками, подключенными к комплектному распределительному устройству через высоковольтные кабели. – Электричество, 2017, № 10, с. 47–54.
11. Matveev D.A., Larin V.S., Zuikov A.V. Approach to Analysis of Resonance Phenomena and Overvoltages Due to Interaction between Power Transformer and External Network. – CIGRE SC A2 & C4 Joint Colloquium, 2013, рр. 1–8.
12. Larin V., Matveev D., Volkov A. Study of Transient Interaction in a System with Transformer Supplied from Network through a Cable: Assessment of Interaction Frequencies and Resonance Evolvement. – 3rd International Colloquium Transformer Research and Asset Management, 2014, pp. 1–11.
13. Ларин В.С. Резонансные перенапряжения в обмотках трансформаторов. Ч. 1. Условия возникновения и защитные мероприятия. – Электричество, 2015, № 11, c. 33–40.
14. Ларин В.С. Резонансные перенапряжения в обмотках трансформаторов. Ч. 3. Измерение напряжения в обмотках на резонансных частотах. – Электричество, 2016, № 1, c. 20–24.
15. Борисов Р.К., Коломиец Е.В., Гаффаров Р.Ф. Высокочастотные коммутационные перенапряжения в сети среднего напряжения. – Электричество, 2020, № 4, с. 4–9.
16. Борисов Р.К. и др. Система мониторинга электромагнитной обстановки на подстанциях. – Энергоэксперт, 2019, № 1(69), с. 38–40.
#
1. Kadomskaya K.P., Lavrov Yu.A., Reyherdt А.А. Perenap-ryazheniya v elektricheskih setyah razlichnogo naznacheniya i zashchita ot nih (Overvoltage in Electrical Networks for Various Purposes and Protection Against Them). Novosibirsk: Izd-vo NGTU, 2004, 368 с.
2. Tekhnika vysokih napryazheniy (High voltage technology) / Under Ed. D.V. Pazevig. М.: Energiya, 1976, 488 p.
3. Bazutkin V.V. et al. Perenapryazheniya v elektricheskih sistemah i zashchita ot nih (Overvoltage in Electrical Systems and Protection Against Them). SPb.: Energoatomizdat, 1995, 316 p.
4. SТО 56947007-29.240.01.221-2016. Rukovodstvo po zashchite elektricheskih setey napryazheniem 110–750 kV ot grozovyh i vnutrennih perenapryazheniy (Guidelines on Protection of Electrical Networks of 110–750 kV from Lightning and Internal Overvoltages), 2016, 46 p.
5. Metodicheskie ukazaniya po ogranicheniyu vysokochastotnyh kommutatsionnyh perenapryazheniy i zashchite ot nih elektrotekhnicheskogo oborudovaniya v raspredelitel'nyh ustroystvah 110 kV i vyshe (Guidelines on Mitigation of High Frequency Switching Overvoltages and Protection from Them of Power Equipment and Switchgears of 110 kV and Higher). М.: SPO ORGRES,1998, 26 p.
6. Kadomskaya K.P. Novosti elektrotekhniki – in Russ. (Electrical Engineering News), 2009, No. 2(56), pp. 12–14.
7. Sheyko P.А. Novosti elektrotekhniki – in Russ. (Electrical Engineering News), 2013, No. 1(79), pp. 22–25.
8. Lavrov Yu.А. et al. Elektro – in Russ. (Electro), 2010, No. 6, pp. 24–27.
9. Nevretdinov Yu.M., Fastiy G.P. Nauchno-tekhnicheskie vedo-mosti SPbGPU – in Russ. (Scientific and Technical Bulletin of SPbSPU), 2010, No. 1, pp. 244–250.
10. Zil'berman V.А. Elektrichestvo – in Russ. (Electricity), 2017, № 10, с. 47–54.
11. Matveev D.A., Larin V.S., Zuikov A.V. Approach to Analysis of Resonance Phenomena and Overvoltages Due to Interaction between Power Transformer and External Network. – CIGRE SC A2 & C4 Joint Colloquium, 2013, рр. 1–8.
12. Larin V., Matveev D., Volkov A. Study of Transient Interaction in a System with Transformer Supplied from Network through a Cable: Assessment of Interaction Frequencies and Resonance Evolvement. – 3rd International Colloquium Transformer Research and Asset Management, 2014, pp. 1–11.
13. Larin V.S. Elektrichestvo – in Russ. (Electricity), 2015, No. 11, pp. 33–40.
14. Larin V.S. Elektrichestvo – in Russ. (Electricity), 2016, No. 1, pp. 20–24.
15. Borisov R.K., Kolomiets E.V., Gaffarov R.F. Elektrichestvo – in Russ. (Electricity), 2020, No. 4, pp. 4–9.
16. Borisov R.К. et al. Energoekspert – in Russ. (Energoexpert), 2019, No. 1(69), pp. 38–40.
Published
2022-11-17
Issue
No 1 (2023): Issue № 1
Section
Article