基于辐射电磁波信号检测的开关柜重燃现象检测方法
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摘要
断路器在开断电容器组等容性负载时发生重燃,会产生高幅值的重燃过电压,威胁并联补偿装置和电网安全。开关柜动作时会在空间辐射能够用于判别是否发生重燃现象的电磁波信号,本文阐述了基于辐射电磁波信号带电检测开关柜重燃现象的检测原理,对红河供电局所属无功投切开关柜进行现场检测,发现了存在重燃现象的开关,证明了该方法可以用来检测开关柜的重燃现象。
Circuit breakers will reignite when they switch capacitor groups and other capacitive loads, and they will generate high-amplitude reburn overvoltages, threatening the safety of parallel compensation devices and power grids. When the switchgear operates, it radiates electromagnetic signals in the space that can be used to determine whether a rekindling phenomenon has occurred. This article elaborated on the detection principle of the re-ignition phenomenon of the switch cabinet based on the radiated electromagnetic wave signal on-line monitoring, and carried out the on-site inspection of the reactive power switch cabinet belonging to the Honghe Power Supply Bureau. A switch with re-ignition was found, which proved that this method can be used to detect the reignition of the switch cabinet.
Circuit breakers will reignite when they switch capacitor groups and other capacitive loads, and they will generate high-amplitude reburn overvoltages, threatening the safety of parallel compensation devices and power grids. When the switchgear operates, it radiates electromagnetic signals in the space that can be used to determine whether a rekindling phenomenon has occurred. This article elaborated on the detection principle of the re-ignition phenomenon of the switch cabinet based on the radiated electromagnetic wave signal on-line monitoring, and carried out the on-site inspection of the reactive power switch cabinet belonging to the Honghe Power Supply Bureau. A switch with re-ignition was found, which proved that this method can be used to detect the reignition of the switch cabinet.
引文
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[2]张黎.电气设备寿命分布分析[D].济南:山东大学,2005.
[3]任双利.高压断路器在线监测与状态评估系统的研究[D].华北电力大学,2016.
[4]马宏明,程志万,彭晶,彭兆裕,等.基于振动检测与线圈试验技术的高压断路器线圈烧毁防治[J].云南电力技术,2016,44(3):103-105.
[5]黄华,李红雷,王健,等.超高压变电站状态检测系统方案研究[J].華東電力,2009,37(7):1063-1067.
[6]李志兵,陈维江,王浩,等.特高压交流试验示范工程GIS隔离开关带电操作试验[J].高电压技术,2012,38(6):1436-1444.
[7]廖凯,杨继红.SF6高压断路器触头电寿命预测与计算[J].新疆电力技术,2012(1):60-63.
[8]杨飞,荣命哲,吴翊,等.考虑栅片烧蚀金属蒸汽的栅片切割空气电弧仿真与实验研究[J].物理学报,2011,60(5):1-9.
[9]安韵竹,文习山,张婷婷,等.SF6断路器预击穿引起并联电抗器合闸过电压的原因及防护措施[J].高电压技术,2013,39(1):75-80.
[10]肖建涛.新型断路器回路电阻测试方法的研究[D].北京:北京交通大学,2014.
[11]李六零,丁卫东,石月春,等.动态电阻测量法用于评估SF6断路器灭弧室状况的探讨[J].高压电器,2002,38(2):54-55.
[12]毛文奇,黎治宇,邓集.动态电阻法评估SF6断路器灭弧室状况初探[J].湖南电力,2010,30(4):43-44.
[13]胡伊兰,程红,张丰,等.高压断路器动态电阻测试仪的设计[J].高电压技术,2006,32(1):105-106.