Transient Analysis on Circuit Breaker Explosion Caused by Lightning Overvoltage

doi:10.11930/j.issn.1004-9649.2014.8.33.4

Abstract

Abstract: In order to quantitatively describe the whole course of the circuit breaker explosion caused by lightning and to find some relevant measures, by taking a 220 kV substation in China for a case study, the lightning overvoltage on the circuit breaker contact after lightning striking on the tower is calculated by using the EMTP. Meanwhile, based on thermodynamics theory and gas condition function, the energy produced by arc across the contacts and the pressure in extinguisher are calculated. Eventually, the effects of arcing time and lightning current amplitude on arc energy and pressure in extinguisher is analyzed, and some measures for preventing extinguisher explosion and suggestions for insulation coordination are proposed. The research demonstrates that the extinguisher explosion is resulted from the large pressure generated by arc energy in the extinguisher and reducing the arcing time can reduce the arc energy. The magnitude of lightning current is not the determining factor for extinguisher explosion but the inducing condition for breaker contact breakdown. Mounting a MOA on the inlet/outlet line of the substation can effectively reduce the amplitude of lightning overvoltage.

Key words: lightning overvoltage, circuit breaker, extinguisher, explosion, arc energy, SF6, pressure, MOA, transient analysis

CLC Number:

TM863

LI Shuang, LI Guan-hua, ZHU Yi-dong, HAN Hong-gang. Transient Analysis on Circuit Breaker Explosion Caused by Lightning Overvoltage[J]. Electric Power, 2014, 47(8): 33-37.

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.8.33.4

https://www.electricpower.com.cn/EN/Y2014/V47/I8/33

References

[1] DL/T 620—1997 交流电气装置的过电压保护和绝缘配合[S].
[2] 李汉明,陈维江,张翠霞,等. 多雷地区110 kV 和220 kV 敞开式变电所的雷电侵入波保护[J]. 电网技术,2002,26（8）：39-43.
LI Han-ming, CHEN Wei-jiang, ZHANG Cui-xia, et al . Incoming lightning protection for 110 kV and 220 kV open-air substations at lightning intensified area [J]. Power System Technology, 2002,26(8): 39-43.
[3] 谢海,尹志民,陈承林,等. 一起220 kV SF 6 断路器事故原因分析[J]. 高电压技术,2006,32（11）：170-173.
XIE Hai, YIN Zhi-ming, CHEN Cheng-lin, et al . Analysis of accident of 220 kV SF 6 breaker[J]. High Voltage Engineering,2006, 32(11): 170-173.
[4] 杨利彬,司马文霞,杨庆,等. 一起220 kV SF 6 断路器爆炸事故的原因分析及仿真计算[J]. 高压电器,2010,46（1）：89-92.
YANG Li-bin, SIMA Wen-xia, YANG Qin, et al . Simulation calculation and analysis of an explosion accident of 220 kV SF 6 breaker [J]. High Voltage Apparatus, 2010, 46(1): 89-92.
[5] 陶荣明,陈梁金,高媛. 一起雷击220 kV线路引起开关设备故障的计算分析[J]. 高压电器,2008,44（5）：428-431.
TAO Rong-min, CHEN Liang-jin, GAO Yuan, et al . Calculation and analysis of a switchgear fault caused by lightning strike on 220 kV transmission lines[J]. High Voltage Apparatus, 2008, 44(5): 428-431.
[6] 周泽存,沈其工,方瑜,等. 高电压技术[M]. 北京：中国电力出版社,2009.
[7] MARTINEZ J A, MAHSEREDJIAN J, KHODABAKHCHIAN B. Determination for modeling system transients, Part VI: circuit breakers[J]. IEEE Transactions on Power Delivery, 20(3): 2079-2085.
[8] 祝瑞金,胡宏,曹路. 基于人工单相接地短路试验的电力系统计算用模型参数校核方法研究[J]. 电网技术,2007,31（5）：58-63.
ZHU Rui-jin, HU Hong, CAO Lu. Research on verification of man-made single-phase earth fault based model parameters utilized in power system calculation [J]. Power System Technology, 2007, 31(5): 58-63.
[9] 徐国政,张节容,钱家骊,等. 高压断路器原理和应用[M]. 北京：清华大学出版社,2000.
[10] 林莘,李爽,徐建源,等. 考虑GIS外壳传输特性的VFTO计算模型[J]. 电网技术,2010,34（11）：203-207.
LIN Xin, LI Shuang, XU Jian-yuan, et al . Calculation model of VFTO considering transmitting characteristics of GIS enclosure [J]. Power System Technology, 2010, 34(11): 203-207.
[11] 林莘,李爽,徐建源. 特高压GIS壳体过电压特性[J]. 沈阳工业大学学报,2009,31（6）：606-610.
LIN Xin, LI Shuang, XU Jian-yuan. Enclosure over-voltage characteristics of UHV GIS[J]. Journal of Shenyang University of Technology, 2009, 31(6): 606-610.
[12] MARTINEZ J A, GUSTAVSEN B, DURBAK D. Parameter determination for modeling system transients, Part I: overhead lines [J]. IEEE Transactions On Power Delivery, 20(3): 2038-2044.
[13] FU Jin, SIMA Wen-xia, YANG Qin, et al . Simulation analysis on lightning accident of±500 kV DC transmission line based on ATP-EMTP [J]. High Voltage Engineering, 2009, 35(4): 802-808.
[14] 邱关源. 电路[M]. 北京：高等教育出版社,2005：248-255.
[15] 李光琦. 电力系统暂态分析[M]. 北京：中国电力出版社,2011：86-91.
[16] 马文蔚.物理学（上）[M]. 北京：中国电力出版社,2004.
[17] MARTINEZ J A, DURBAK D W. Determination for modeling system transients, Part V: surge arresters [J]. IEEE Transactions on Power Delivery, 20(3): 2073-2078.
[18] GB 1984—2011 高压交流断路器[S].
[19] 郑立,李群炬,梁玉枝,等. 发电机-变压器组500 kV断路器断口闪络故障分析[J]. 中国电力,2010,43（2）：31-34.
ZHENG Li, LI Qun-ju, LIANG Yu-zhi, et al . Analysis of flashover fault for a 500 kV circuit breaker of a generator- transformer unit and its countermeasures [J]. Electric Power, 2010, 43(2): 31-34.
[20] 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 Gang, LIU Yu-jun. Operation overvoltage analysis of the circuit breakers with closing resistors in UHV grids[J]. Electric Power, 2013, 46(5): 56-60.
[21] 王逸萍,梅军,郑建勇,等. 核主元分析在高压断路器故障诊断中的应用[J]. 中国电力,2013,46（8）：133-137.
WANG Yi-ping, MEI Jun, ZHENG Jian-yong, et al . Application of kernel principal components analysis to fault diagnosis of high-voltage circuit breakers[J]. Electric Power, 2013, 46(8): 133-137.