Development of the Vacuum Arc Chute for a 110 kV Single-Break Vacuum Circuit Breaker
Abstract
Requirements for high-voltage vacuum circuit breakers for networks with a grounded neutral, which are stemming from the prospects of using vacuum circuit breakers in networks with the solidly grounded neutral are formulated. The arch chute design for a 110 kV single-break vacuum circuit breaker that takes into account the occurrence of repeated breakdowns is developed. The shielding system equalizes the voltage over the chute casing, decreases the electric field intensity at the “triple point”, protects the casing dielectric from becoming dusted with metallic contact parts erosion products, prevents the occurrence of cascade breakdown between the contact parts and central shield, and eliminates a possible decrease of the chute electric strength as it gradually works out its switching life. It is shown that the chute design includes measures to prevent the possibility of repeated breakdowns during disconnection up to class С1 according to GOST 52565-2006. It has been proven that for vacuum arc chutes for class С2 (for switching a capacitive load) it is necessary to develop a chute with two breaks between the contact parts or to connect two vacuum chutes in series. The shielding system adopted in the chute rules out the possibility of ceramic casing to become metallized, which decreases the chute electric strength as it gradually works out its switching life, and the vacuum arc transfer to beyond the inter-contact gap boundaries onto the central shield, the burnout of which results in that the vacuum arc chute loses its tightness and fully loses its functional properties.
References
1. Рыльская Л.А., Перцев А.А. Электрическая прочность вакуумной дугогасительной камеры после отключения тока. — Электротехника, 1985, № 1, с. 5—9.
2. Рыльская Л.А. О применимости синтетической схемы для испытаний вакуумных выключателей на отключающую способность. Международная ассоциация «ТРАВЭК». — XXII Между- народ. научно-техническая конф., 2015, Москва; D9.pdf.
3. Jaeseop Ryu, Young-Geun Kim, Jongwoong Choi, Seokwon Park. The Experimental Research of 170kV VCB Using Single-Break Vacuum Interrupter. In: XXVth ISDEIV, Tomsk, 2014, рр. 493—496.
4. Himi H., Takashima T., Shimmon T., Umoya E., Yanagisawa H. Progress on higher voltage vacuum power circuit breaker. ВЭЛК, Москва, 1977, секция 2, доклад 61.
5. Пат. № 1725681 (РФ). Контактная система для вакуумной дугогасительной камеры/А..А. Перцев, С.П. Чистяков. — БИ, 1993, № 23.
6. Селикатова С.М., Лукацкая И.А. Начальная стадия вакуумной дуги отключения. — ЖТФ, 1972, т. 42, вып. 7, с. 1508—1514.
7. Перцев А.А., Панибратец А.Н., Рыльская Л.А. О предотвращении повторных пробоев вакуумных выключателей. — Электротехника, 2011, № 12, с. 28—35.
8. Алфёров Д.Ф., Рыльская Л.А., Сидоров В.А. Об изменении электрической прочности вакуумных дугогасительных камер по мере выработки электрического ресурса. — Электротехника, 2010, № 11, с. 25—31.
9. Рыльская Л.А. Выбор хода контактов для одноразрывных вакуумных выключателей класса С1. — Электро, 2014, № 3, с. 40—46.
10. Рыльская Л.А. Электрическая прочность секций ВДК после выработки электрического ресурса. — Электротехника, 2002, № 6, с. 14-21.
11. Пат. № 2374718 dRU. Вакуумный коммутационный прибор/А.А. Перцев, Л.А. Рыльская. — БИ, 2009, № 33.
12. Рыльская Л.А, Перцев А.А. Напряженности на контактах и экранах ВДК при пробоях после отключения тока. — Электротехника, 1989, № 2, с. 29—32.
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1. Ryl’skaya L.A., Pertsev A.A. Electrotekhnika — in Russ. (Elektrical Engineering), 1985, No. 1, pp. 5—9.
2. Ryl’skaya L.A. O primenimosti sinteticheskoy skhemy dlya ispytaniy vakuumnykh vyklyuchateley na otklyuchayushchuyu sposobnost’. Mezhdunarodnaya assotsiatsiya «TRAVEK». — XXII Mezhdunarod. nauchno-tekhnicheskaya konf. (On the applicability of the synthetic circuit for testing vacuum circuit breakers for breaking capacity. International Association «TRAVEK». — XXII International. scientific and technical conf.), 2015, Moscow; D9.pdf.
3. Jaeseop Ryu, Young-Geun Kim, Jongwoong Choi, Seokwon Park. The Experimental Research of 170kV VCB Using Single-Break Vacuum Interrupter. In: XXVth ISDEIV (The Experimental Research of 170kV VCB Using Single-Break Vacuum Interrupter. In: XXVth ISDEIV), Tomsk, 2014, pp. 493—496.
4. Himi H., Takashima T., Shimmon T., Umoya E., Yanagisawa H. Progress on higher voltage vacuum power circuit breaker (Progress on higher voltage vacuum power circuit breaker). VELK, Moscow, 1977, section 2, report 61.
5. Pat. № 1725681 (RF). Kontaktnaya sistema dlya vakuumnoy dugogasitel’noy kamery/A.A. Pertsev, S.P. Chistyakov (Contact system for a vacuum interrupter / А..А. Pertsev, S.P. Chistyakov). — Bulletin of inventions, 1993, No. 23.
6. Selikatova S.M., Lukatskaya I.A. Zhurnal Teoreticheskoy Fiziki — in Russ. (Journal of Theoretical Physics), 1972, vol. 42, iss. 7, pp. 1508—1514.
7. Pertsev A.A., Panibratets A.N., Ryl’skaya L.A. Elektrotekhnika — in Russ. (Electrical Engineering), 2011, No. 12, pp. 28—35.
8. Alforov D.F., Ryl’skaya L.A., Sidorov V.A. Elektrotekhnika — in Russ. (Electrical Engineering), 2010, No. 11, pp. 25—31.
9. Ryl’skaya L.A. Elektro — in Russ. (Electro), 2014, No. 3, pp. 40—46.
10. Ryl’skaya L.A. Elektrotekhnika — in Russ. (Electrical Engineering), 2002, No. 6, pp. 14—21.
11. Pat. № 2374718 S1RU. Vakuumnyy kommutatsionnyy pribor/A.A. Pertsev, L.A. Ryl’skaya. B.I. (Vacuum switching device / A.A. Pertsev, L.A. Rylskaya). - Bulletin of inventions, 2009, No. 33.
12. Ryl’skaya L.A, Pertsev A.A. Elektrotekhnika — in Russ. (Electrical Engineering), 1989, No. 2, pp. 29—32.
