真空断路器开断并联电抗器保护措施仿真分析

doi:10.11930/j.issn.1004-9649.2014.1.39.4

摘要/Abstract

摘要： 近年来中国中压配电系统中真空断路器切除并联电抗器时故障频发,如站用变压器及母联开关等设备闪络,甚至引发开关柜烧毁的严重事故。以某220 kV变电站的20 kV系统发生的该类故障为研究对象,运用PSCAD/EMTDC建立该变电站系统模型,仿真分析故障发生时系统的运行状态,并结合故障现象分析故障发生原因,提出相应措施,以抑制真空断路器切除电抗器时的操作过电压。仿真计算结果表明,由于真空断路器开断时发生截流、复燃且电抗器与杂散电容间发生谐振等多个方面原因,真空断路器切除电抗器时产生较高过电压,如果仅在电抗器侧安装避雷器与电容器,将无法有效抑制由于截流和复燃产生的过电压,需要在电抗器两端并联阻容保护装置。针对故障变电站的系统配置,建议电抗器并联的阻容装置电容值取0.2 μF,电阻值取400 Ω为宜。

关键词: 真空断路器, 并联电抗器, 过电压, 截流, 复燃, 阻容装置

中图分类号:

TM862

谢天喜, 周志成, 陶风波, 马勇, 吉亚民. 真空断路器开断并联电抗器保护措施仿真分析[J]. 中国电力, 2014, 47(1): 39-43.

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https://www.electricpower.com.cn/CN/Y2014/V47/I1/39

参考文献

[1] MURAI Y, NITTA T, TAKAMI T, et al . Protection of motor from switching surge by vacuum switch[J]. IEEE Transactions on Power Apparatus and Systems, 1974, 93(5): 1472-1477.
[2] VOLLET C, DE METZ N B. Protecting high-voltage motors against switching overvoltages[C]//4th PCIC Europe. Paris, France, 2007: 1-7.
[3] CHALY A M, CHALAYA A T, POLUYANOV V N, et al . The peculiarities of interruption of the medium voltage motors by VCB with CuCr contacts[C]//18th ISDEIV. Eindhoven, Netherlands, 1998: 439-442.
[4] CHALY A M, CHALAYA A T. The influence of a vacuum circuit breaker and circuit parameters on switching overvoltages generated during interruption of starting motors[C]//17th ISDEIV. Berkeley, CA, USA, 1996: 244-248.
[5] 陈梁金,周国良,江少成. 35 kV空母线系统中真空断路器投切电抗器相关问题分析[J]. 高压电器,2010,46（9）：103-106.
CHEN Liang-jin, ZHOU Guo-liang, JIANG Shao-cheng. Analysis of the faults caused by vacuum circuit breaker switching to shunt reactors in a 35 kV bus bar system[J]. High Voltage Apparatus, 2010, 46(9): 103-106.
[6] PANEK J, FEHRLE K G. Overvoltage phenomena associated with virtual current chopping in three phase circuits[J]. IEEE Transactions on Power Apparatus and Systems, 1975, 94(4): 1317-1325.
[7] MUNIR B S, KADIR S A. Application of surge arrester on vacuum circuit breaker[C]//2012 IEEE PES Asia-Pacific Power and Energy Engineering Conference. Shanghai, China, 2012: 1-4.
[8] 时燕新. 真空断路器投切并联电抗器过电压实例研究[J]. 华北电力技术,2005（6）：5-8.
SHI Yan-xin. Research on vacuum circuit breaker switching shunt capacitor overvoltage [J]. North China Electric Power, 2005(6): 5-8.
[9] 陈西庚. 断路器切合并联电抗器爆炸原因分析[J]. 电力建设, 2003,24（5）：10-11.
CHEN Xi-geng. Analysis on Explosion causes of circuit breakers during cutting on/off reactors in parallel[J]. Electric Power Construction, 2003, 24(5): 10-11.
[10] 赵红玉,张曦,弋东方,等. 引起电抗器故障的操作过电压原因分析及解决方案[J]. 供用电,2010,27（4）：51-53.
ZHAO Hong-yu, ZHANG Xi, YI Dong-fang, et al . Reason analysis and solutions of switching overvoltage caused reactor faults [J]. Distribution & Utilization, 2010, 27(4): 51-53.
[11] 李国强,崔平,王春芳. 10.5 kV 10 MVA并联电抗器截流过电压保护[J]. 黑龙江电力,2008,30（3）：230-233.
LI Guo-qiang, CUI Ping, WANG Chun-fang. Cut-off overvoltage protection for 10.5 kV 10 MVA shunt reactor[J]. Heilongjiang Electric Power, 2008, 30(3): 230-233.
[12] 陈西庚. 真空断路器断开电感负荷的过电压保护[J]. 中国电力,1996,29（5）：10-13.
CHEN Xi-geng. Overvoltage protection for vacuum circuit breaker when cutting inductive load current[J]. Electric Power, 1996, 29(5): 10-13.
[13] 李召家,黎东升. 真空断路器投切并联电抗器试验研究[J]. 广东电力,2003,16（4）：29-33.
LI Zhao-jia, LI Dong-sheng. Experimental research of vacuum circuit breaker opening-closing shunt reactor[J]. Guangdong Electric Power, 2003, 16(4): 29-33.
[14] 杜宁,关永刚,张景升,等. 40.5 kV真空断路器开断并联电抗器的过电压防护[J]. 高电压技术,2010,36（2）：345-349.
DU Ning, GUAN Yong-gang, ZHANG Jing-sheng, et al . Protections of overvoltages caused by 40.5 kV vacuum circuit breakers switching off shunt reactors[J]. High Voltage Engineering, 2010, 36(2): 345-349.
[15] 付文光. 真空断路器开断电抗器和电容器的过电压试验研究[D]. 北京：华北电力大学,2011：33-50.
FU Wen-guang. Experimental research on overvoltage in switching off shunt reactor and capacitor of vacuum circuit[D]. Beijing: North China Electric Power University, 2011: 33-50.
[16] 杜宁,关永刚,张景升,等. 40.5 kV真空断路器开断并联电抗器的现场试验[J]. 清华大学学报：自然科学版,2010,50（4）: 517-520.
DU Ning, GUAN Yong-gang, ZHANG Jing-sheng, et al . Field tests of 40.5 kV vacuum circuit breakers switching off shunt reactors[J]. Journal of Tsinghua University: Science and Technology, 2010, 50(4): 517-520.
[17] 刘卫东,徐国政,关永刚,等. 40.5 kV真空断路器开断并联电抗器时过电压的产生机制[J]. 中国电机工程学报,2012,32（33）：124-132.
LIU Wei-dong, XU Guo-zheng, GUAN Yong-gang, et al . Overvoltage mechanism of switching off shunt reactors for 40.5 kV vacuum circuit breakers[J]. Proceedings of the CSEE, 2012, 32(33): 124-132.
[18] 张定国. 中压真空断路器及其复燃过电压[J]. 华东电力,1995（6）：13-16.
ZHANG Ding-guo. Medium voltage vacuum circuit breaker and its reignition overvoltage[J]. East China Electric Power, 1995(6):13-16.
[19] DL/T 620—1997 交流电气装置的过电压保护和绝缘配合[S].
[20] 刘宝成,时燕新,张振高. 一种真空断路器截流值的估算方法[J]. 云南电力技术,2005,33（4）：33-35.
LIU Bao-cheng, SHI Yan-xin, ZHANG Zhen-gao. One method to estimate the chopping current of vacuum circuit breakers[J].Yunnan Electric Power, 2005, 33(4): 33-35.
[21] 杜炜,沈琪,汲胜昌,等. 合成回路用高压电抗器过电压分析及电场仿真[J]. 高压电器,2012,48（7）：31-37.
DU Wei, SHEN Qi, JI Sheng-chang, et al . Overvoltage analysis and electric field simulation of high voltage reactor in synthetic circuit [J]. High Voltage Apparatus, 2012, 48(7): 31-37.
[22] 钱忠厚,王季梅. 防止三相真空断路器产生多次重燃过电压的措施[J]. 高压电器,1988（1）：43-45.QIAN Zhong-hou, WANG Ji-mei. One measure to prevent overvoltages from multiple reignition of 3-phase vacuum circuit breaker [J]. High Voltage Apparatus, 1988(1): 43-45.
[23] 霍凤鸣,蒋云峰,朱泳,等. 40.5 kV真空断路器运行分析[J]. 中国电力,2009,42（1）：45-48.
HUO Feng-ming, JIANG Yun-feng, ZHU Yong, et al . Operation analysis of 40.5 kV vacuum circuit breakers[J]. Electric Power, 2009, 42(1): 45-48.