一起销轴缺陷引起断路器合闸不到位故障分析
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摘要
介绍了一起断路器合闸不到位故障,通过现场检查、尺寸测量、故障模拟、金属检测,明确故障原因为提升杆与绝缘拉杆连接销轴端部的弹性锁片未安装或安装工艺不良,最终导致销轴产生移位并与下支撑座内壁产生摩擦,使得合闸阻力增大,导致断路器合闸不到位。并根据故障具体原因,提出了相应的排查措施。
A circuit breaker poor closing failureis analyzed. Through field inspection,size measurement,fault simulation and metal detection,it is found that the absence or poor installation of the locking piece at the end of the joint pin of hoisting rod and insulation rod causespin displacement and friction with the inner wall of the lower support,which increases the closing resistance and hence results in the inadequate closing failure of the circuit breaker. Accordingly,corresponding countermeasures are put forward.
A circuit breaker poor closing failureis analyzed. Through field inspection,size measurement,fault simulation and metal detection,it is found that the absence or poor installation of the locking piece at the end of the joint pin of hoisting rod and insulation rod causespin displacement and friction with the inner wall of the lower support,which increases the closing resistance and hence results in the inadequate closing failure of the circuit breaker. Accordingly,corresponding countermeasures are put forward.
引文
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[20]李晓峰,霍凤鸣,甄利.利用SF6气体分解物对断路器运行状况进行诊断的方法探讨[J].高压电器,2011,37(1):103-105.LI Xiaofeng,HUO Fengming,ZHEN Li.Operational status evaluation of circuit breaker by detecting SF6 decomposition products[J].High Voltage Apparatus,2011,37(1):103-105.
[2]郑吓耕.110 kV SF6断路器爆炸的原因分析[J].红水河.2017(1):109-112.ZHENG Xiageng.Cause analysis of 110 k V SF6 circuit breaker explosion[J].Hong Shui River,2017(1):109-112.
[3]郭树永.一起500 kV SF6断路器爆炸事故分析[J].高压电器,2013,49(2):135-138.GUO Shuyong.Analysis of an explosion accident of 500 kVSF6 circuit breaker[J].High Voltage Apparatus,2013,49(2):135-138.
[4]于建龙.一起调试期间500 kV SF6断路器灭弧室瓷套爆炸原因的分析[J].湖北电力,2016(4):32-35.YU Jianlong.Analysis of an explosion of the porcelain sleeve of 500 kV SF6 circuit breaker during the commissioning period[J].Hubei Electric Power,2016(4):32-35.
[5]李璐,牛田野,姜国庆,等.一起500 kV SF6断路器爆炸事故的分析[J].中国电机工程学报,2016,36(s1):246-250.LI Lu,NIU Tianye,JIANG Guoqing,et al.Analysis of an explosion accident of 500 k V circuit breaker caused by insulation pull arm defect[J].Proceedings of the CSEE,2016,36(s1):246-250.
[6]崔景春.高压交流断路器[M].北京:中国电力出版社,2016.CUI Jingchun.High voltage AC circuit breaker[M].Beijing:China Electric Power Press,2016.
[7]Analysis,and reporting of power circuit breaker failures:IEEE Std C37.10-2011[S].2010.
[8]王昌长,李福祺,高胜友.电力设备的在线监测与故障诊断[M].北京:清华大学出版社,2006.WANG Changchang,LI Fuqi,GAO Shengyou.On-line monitoring and diagnosis for power equipment[M].Beijing:Tsinghua University Press,2006.
[9]赵现平,马宏明,程志万,等.一起220 k V瓷柱式断路器慢合故障及分析[J].高压电器,2017,53(9):234-239.ZHAO Xianping,MA Hongming,CHENG Zhiwan,et al.Analysis on a slow-closing accident of 220 kV porcelain column type circuit breaker[J].High Voltage Apparatus.2017,53(9):234-239.
[10]郭跃东,郭丽华.110 k V断路器分合闸不到位的原因分析及防范措施[J].电世界,2015(1):26.GUO Yuedong,GUO Lihua.Reason analysis and protection measure of 110 k V circuit breaker opening and closing defects[J].Electrical World,2015(1):26.
[11]汪峰,夏小飞.一起220 k V SF6断路器分闸不成功故障分析与处理[J].广西电力,2015(6):38-40.WANG Feng,XIA Xiaofei.Analysis and treatment of an unsuccessful opening fault of 220 kV SF6 circuit breaker[J].Guangxi Electric Power.2015(6):38-40.
[12]向真,张欣,黄荣辉,等.X射线数字成像技术在开关设备缺陷诊断中的应用[J].高压电器,2016,52(2):195-199.XIANG Zhen,ZHANG Xin,HUANG Ronghui,et al.Application of X-ray digital radiography in the defect diagnosis of switchgears[J].High Voltage Apparatus.2016,52(2):195-199.
[13]马飞越,亓亮.X射线CR成像技术在开关类设备检测中应用[J].东北电力大学学报,2016,36(1):8-12.MA Feiyue,QI Liang.X-ray CR imaging applications in the switch testing such equipment[J].Journal of Northeast Dianli University,2016,36(1):8-12.
[14]王志惠,杨小库,邓大勇,等.750 kV断路器合闸电阻X射线成像检测分析[J].青海电力.2012,30(4):9-11.WANG Zhihui,YANG Xiaoku,DENG Dayong,et al.Analysis X-ray imaging detection of closing resistors for750 kV circuit breaker[J].Qinghai Electric Power,2012,36(4):9-11.
[15]孙大陆.110 kV SF6断路器爆炸事故原因分析[J].东北电力技术,2010(3):37-39.SUN Dalu.Analysis on 110 kV SF6 breaker explosion[J].Northeast Electric Power Technology,2010(3):37-39.
[16]江韬,贺振华,向真,等.一起500 k V瓷柱式SF6断路器故障的分析及处理[J].高压电器,2015,51(12):206-211.JIANG Tao,HE Zhenhua,XIANG Zhen,et al.Fault analysis and treatment of a 500 kV SF6 porcelain column circuit breaker[J].High Voltage Apparatus,2015,51(12):206-211.
[17]何喜梅,王志惠,杨小库,等.CR技术在电气设备检测中的典型应用[J].高压电器.2014,50(6):124-127.HE Ximei,WANG Zhihui,YANG Xiaoku,et al.Typical application of CR technology in the detection of electrical equipment[J].High Voltage Apparatus,2014,50(6):124-127.
[18]邓永辉.高压开关设备典型故障案例汇编:2006~2010年[M].北京:中国电力出版社,2012.DENG Yonghui.High voltage switchgear typical fault cases compilation:2006~2010[M].Beijing:China Electric Power Press,2012.
[19]胡子珩.输变电设备典型缺陷及故障案例分析[M].北京:中国电力出版社,2016.HU Ziheng.Analysis of typical defects and failure cases of power transmission and transformation equipment[M].Beijing:China Electric Power Press,2016.
[20]李晓峰,霍凤鸣,甄利.利用SF6气体分解物对断路器运行状况进行诊断的方法探讨[J].高压电器,2011,37(1):103-105.LI Xiaofeng,HUO Fengming,ZHEN Li.Operational status evaluation of circuit breaker by detecting SF6 decomposition products[J].High Voltage Apparatus,2011,37(1):103-105.