Monitoring and analysis of the auxiliary contact bounce of a gas-insulated switchgear circuit breaker according to transient voltage

ZHANG Pengfei; DING Dengwei; YANG Xinzhi; LIU Yan; LI Xing; HE Liang

doi:10.16511/j.cnki.qhdxxb.2023.26.012

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Journal of Tsinghua University(Science and Technology) ›› 2023, Vol. 63 ›› Issue (7) : 1164-1172. DOI: 10.16511/j.cnki.qhdxxb.2023.26.012

Research Article

Monitoring and analysis of the auxiliary contact bounce of a gas-insulated switchgear circuit breaker according to transient voltage

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Abstract

Gas-insulated switchgear (GIS) circuit breakers (CBs) with a closing resistor are characterized by structural complexity and a high failure rate. The auxiliary contact of the closing resistor may bounce during the closing process of the GIS CB. The bounce of the closing resistor contacts may cause arc restriking between the auxiliary contacts and aggravate the ablation of the contacts. Moreover, the auxiliary contact bounce may lead to the breakdown of the main break, resulting in high transient voltage and threatening the equipment insulation. Therefore, monitoring and evaluating the bounce of the auxiliary contact of the closing resistor is crucial. In this paper, the closing process of a CB with a closing resistor and the bounce of the auxiliary contacts were analyzed. Then, a method for monitoring and diagnosing the bounce condition of the auxiliary contact of the closing resistor according to the transient voltage during the closing process was proposed. An ultrawide-frequency-band sensing technology for transient voltage detection was introduced, and an online transient voltage-monitoring system based on the voltage divider sensing technology was realized. The effective measurement bandwidth of this system is 10 Hz-100 MHz. Two CBs (with and without a closing resistor) were used to charge the same gas insulated line (GIL), and the transient voltage during the CB closing process was monitored. The transient voltage and closing resistor contact bounce during the closing of two CBs were analyzed and compared, and the following conclusions were obtained. During the closing process of the CB without a closing resistor, the excited transient voltage contained rich high-frequency components. During the closing process of the CB with a closing resistor, two types of transient voltages (type Ⅰ and Ⅱ) were generated. Type Ⅰ did not contain any high-frequency components, and type Ⅱ was similar to the voltage generated during the closing process of the CB without a closing resistor. The type Ⅰ voltage was induced by the breakdown between the auxiliary contacts, and the type Ⅱ voltage was generated by the breakdown between the main contacts during the bounce of the auxiliary contacts. Through the online monitoring of the transient voltage during the CB closing process, the bounce of the auxiliary contacts and the breakdown voltage of the main break were analyzed, and the time interval between the first breakdown of auxiliary contacts and arc extinction after the bounce was proposed to characterize the bounce condition of the auxiliary contacts. Owing to the existence of a closing resistor, there is a difference between the transient voltages generated by the breakdown of the auxiliary break and the main break. During the closing process of the CB with a closing resistor, the breakdown occurred in the main break, indicating that the auxiliary contact bounced and that the closing resistor did not function. Therefore, through analysis of the moment at which the second type of transient voltage appears during the closing process of CBs with a closing resistor, the online monitoring and diagnosis of the bounce condition of the closing resistor contact could be realized. The results of this study can guide the effective monitoring and evaluation of the operating condition of CBs and provide a reference for the design and online monitoring of CBs with closing resistors.

Key words

gas-insulated switchgear circuit breaker / closing resistor / transient voltage / auxiliary contact bounce / monitoring and diagnosis

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ZHANG Pengfei, DING Dengwei, YANG Xinzhi, LIU Yan, LI Xing, HE Liang. Monitoring and analysis of the auxiliary contact bounce of a gas-insulated switchgear circuit breaker according to transient voltage[J]. Journal of Tsinghua University(Science and Technology). 2023, 63(7): 1164-1172 https://doi.org/10.16511/j.cnki.qhdxxb.2023.26.012

References

[1] 陈维江,李志兵,孙岗,等.特高压气体绝缘开关设备中特快速瞬态过电压特性的试验研究[J].中国电机工程学报, 2011, 31(31):38-47. CHEN W J, LI Z B, SUN G, et al. Experimental research on the characteristics of very fast transient overvoltage in ultra high voltage gas insulated switchgear[J]. Proceedings of the CSEE, 2011, 31(31):38-47.(in Chinese)
[2] 尹晓芳,于力,刘广维.封闭式组合电器隔离开关产生的过电压[J].中国电机工程学报, 2002, 22(7):111-114. YIN X F, YU L, LIU G W. Overvoltage from gas insulated switchgear disconnector[J]. Proceedings of the CSEE, 2002, 22(7):111-114.(in Chinese)
[3] 邵冲,杨钰,刘卫东,等.断路器结构参数对GIS中特快速暂态过电压波形的影响[J].高电压技术, 2011, 37(3):577-584. SHAO C, YANG Y, LIU W D, et al. Effect of breaker structural parameters on very fast-fronted transient overvoltage waveform in GIS[J]. High Voltage Engineering, 2011, 37(3):577-584.(in Chinese)
[4] 陈维江,颜湘莲,王绍武,等.气体绝缘开关设备中特快速瞬态过电压研究的新进展[J].中国电机工程学报, 2011, 31(31):1-11. CHEN W J, YAN X L, WANG S W, et al. Recent progress in investigations on very fast transient overvoltage in gas insulated switchgear[J]. Proceedings of the CSEE, 2011, 31(31):1-11.(in Chinese)
[5] 谷定燮.对我国特高压输电系统过电压和绝缘配合的建议[J].高电压技术, 1999, 25(1):29-32. GU D X. Overvoltage and insulation coordination on ultra high voltage power transmission system in China[J]. High Voltage Engineering, 1999, 25(1):29-32.(in Chinese)
[6] 徐建源,孟涛,林莘,等.断路器合闸过电压计算与分析[J].沈阳工业大学学报, 2009, 31(3):247-251. XU J Y, MENG T, LIN X, et al. Calculation and analysis of closing over-voltage of circuit-breaker[J]. Journal of Shenyang University of Technology, 2009, 31(3):247-251.(in Chinese)
[7] 王剑,朱芸. 500 kV输电线路断路器合闸电阻配置原则[J].电力系统自动化, 2008, 32(19):100-103. WANG J, ZHU Y. Configuration criterion of circuit breaker closing resistors in 500 kV transmission lines[J]. Automation of Electric Power Systems, 2008, 32(19):100-103.(in Chinese)
[8] 夏成军,张尧,邹俊雄.合空线统计过电压的建模与仿真[J].高电压技术, 2007, 33(10):11-15. XIA C J, ZHANG Y, ZOU J X. Model and simulation of statistical line-energizing over-voltage[J]. High Voltage Engineering, 2007, 33(10):11-15.(in Chinese)
[9] 陈军.超高压长线路电容效应引起的过电压仿真研究[J].电网技术, 2007, 31(S1):121-123. CHEN J. Simulation study on the overvoltage of long distance EHV transmission lines induced by capacitance influences[J]. Power System Technology, 2007, 31(S1):121-123.(in Chinese)
[10] 陈思浩,吴政球,陈加炜,等.多级合闸电阻限制1000 kV输电线路操作过电压的研究[J].电网技术, 2006, 30(20):10-13. CHEN S H, WU Z Q, CHEN J W, et al. Research on limiting switching overvoltage by multistage closing resistors in 1000 kV transmission lines[J]. Power System Technology, 2006, 30(20):10-13.(in Chinese)
[11] 计荣荣,易强,苏菲,等.超/特高压交流输电线路断路器合闸电阻的适用性研究[J].电网技术, 2011, 35(1):18-25. JI R R, YI Q, SU F, et al. Study on applicability of circuit breaker closing resistance in EHV and UHV AC systems[J]. Power System Technology, 2011, 35(1):18-25.(in Chinese)
[12] 陆华,计荣荣.交流特高压合闸电阻研究[J].能源工程, 2011(4):27-31. LU H, JI R R. Study on closing resistor of UHVAC system[J]. Energy Engineering, 2011(4):27-31.(in Chinese)
[13] 孙结中,吕泽承,蒋学军,等.高压断路器合闸电阻测试仪的研制[J].广西电力, 2005, 28(4):1-6. SUN J Z, Lü Z C, JIANG X J, et al. Development about tester of closing resistance on high voltage circuit breakers[J]. Guangxi Electric Power, 2005, 28(4):1-6.(in Chinese)
[14] 裴振江,姚斯立,何俊佳,等.一种新的特高压断路器合成试验回路[J].中国电机工程学报, 2007, 27(33):65-69. PEI Z J, YAO S L, HE J J, et al. A new synthetic test circuit for UHV circuit breakers[J]. Proceedings of the CSEE, 2007, 27(33):65-69.(in Chinese)
[15] 程亭婷,高文胜,赵宇明,等.高压SF₆断路器动态回路电阻测量中的扰动现象[J].高电压技术, 2018, 44(11):3604-3610. CHENG T T, GAO W S, ZHAO Y M, et al. Fluctuation in dynamic contact resistance measurements for high voltage SF₆ circuit breakers[J]. High Voltage Engineering, 2018, 44(11):3604-3610.(in Chinese)
[16] 李劲彬,陈隽.断路器合闸电阻投入过程中辅助断口触头的弹跳检测与诊断[J].高压电器, 2016, 52(1):180-183. LI J B, CHEN J. Bounce detection and diagnosis of the auxiliary contacts during the switching process of the circuit breaker's closing resistor[J]. High Voltage Apparatus, 2016, 52(1):180-183.(in Chinese)
[17] 黄刚,刘瑜俊.川西地区带合闸电阻断路器的操作过电压分析[J].中国电力, 2013, 46(5):56-60. HUANG G, LIU Y J. Operation overvoltage analysis of the circuit breakers with closing resistors in UHV grids[J]. Electric Power, 2013, 46(5):56-60.(in Chinese)
[18] 陈思浩,吴政球,陈加炜,等. 1000 kV输电线路同期合闸过电压的研究[J].电力系统自动化, 2007, 31(5):46-49. CHEN S H, WU Z Q, CHEN J W, et al. Research on over-voltage limit in synchronizing switching of 1000 kV transmission lines[J]. Automation of Electric Power Systems, 2007, 31(5):46-49.(in Chinese)
[19] 倪辉,陈晓慧,何春应,等. 750 kV交流滤波器断路器的合闸暂态特性及其抑制措施[J].高电压技术, 2022, 48(5):1846-1854. NI H, CHEN X H, HE C Y, et al. Switching transient characteristics and its suppression measures of 750 kV AC filter circuit breaker[J]. High Voltage Engineering, 2022, 48(5):1846-1854.(in Chinese)
[20] 蒋陆萍,曾祥君,刘国祥.超高压断路器合闸电阻测量方法[J].电力科学与技术学报, 2010, 25(4):87-90, 95. JIANG L P, ZENG X J, LIU G X. Measuring methods of closing resistance for ultra-high voltage circuit breakers[J]. Journal of Electric Power Science and Technology, 2010, 25(4):87-90, 95.(in Chinese)
[21] 谢植飚,郑剑,易智飞.断路器合闸电阻动态测量方法的研究[J].广西电力, 2005, 28(2):6-9. XIE Z B, ZHENG J, YI Z F. Study about dynamic measurement for closing resistance on circuit breaker[J]. Guangxi Electric Power, 2005, 28(2):6-9.(in Chinese)
[22] 岳功昌,刘卫东,陈维江.气体绝缘开关设备中特快速瞬态过电压的全过程测量方法[J].中国电机工程学报, 2011, 31(31):18-27. YUE G C, LIU W D, CHEN W J. Measurement methods of very fast transient overvoltage in gas insulated switchgear with complete process[J]. Proceedings of the CSEE, 2011, 31(31):18-27.(in Chinese)
[23] 谷纪亭,殷禹,岳功昌,等.采用特高压隔离开关切合固定串补平台的电容式电压互感器的快速暂态试验[J].高电压技术, 2014, 40(12):3972-3978. GU J T, YIN Y, YUE G C, et al. Fast transient test on capacitor voltage transformer with switching fixed series capacitors platform using UHV disconnector[J]. High Voltage Engineering, 2014, 40(12):3972-3978.(in Chinese)