10kV开关柜金属氧化物避雷器局部放电精确定位及缺陷分析
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摘要
针对某10 kV开关柜综合带电检测过程中发现特高频局部放电异常信号,根据检测结果分析进行精准定位,查找到放电源为开关柜电缆仓后金属氧化物避雷器,并排除了故障。在实验室对存在缺陷的避雷器进行了常规例行试验及局放试验,解剖后发现避雷器内部存在金属间隙放电,进一步确定了该避雷器存在的缺陷,验证了带电检测诊断方法判断运行中避雷器缺陷的重要性及有效性,并提出相关建议。
The abnormal signal of uhf partial discharge was found in the comprehensive live detection process of 10 kV switchgear.Based on the analysis of the detection result,the accurate positioning was carried out to found out the power supply for the metal oxide surge arrester after the cable compartment of the switchgear and the fault was eliminated.The routine test and partial discharge test has been carried out for defective surge arrester in the lab,after the autopsy found that there is surge arrester discharge gap within metal,further to determine the flaws of the surge arrester,the importance and validity of the method of live detection and diagnosis to judge the defects of surge arrester in operation are verified,and puts forward related suggestions.
The abnormal signal of uhf partial discharge was found in the comprehensive live detection process of 10 kV switchgear.Based on the analysis of the detection result,the accurate positioning was carried out to found out the power supply for the metal oxide surge arrester after the cable compartment of the switchgear and the fault was eliminated.The routine test and partial discharge test has been carried out for defective surge arrester in the lab,after the autopsy found that there is surge arrester discharge gap within metal,further to determine the flaws of the surge arrester,the importance and validity of the method of live detection and diagnosis to judge the defects of surge arrester in operation are verified,and puts forward related suggestions.
引文
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[9]左文启,顾渊博.220 kV金属氧化物避雷器红外热缺陷及处理分析[J].电瓷避雷器,2010(1):26-28,32.ZUOWenqi,GU Yuanbo.Thermal defect of 220 kV MOAby infrared diagnosis and field treatments analysis[J].Insulators and Surge Arresters,2010(1):26-28,32.
[10]李庆玲,程济兵,张明智.避雷器的常见故障及红外诊断[J].电瓷避雷器,2007(2):30-33,39.LIQingling,CHENG Jibing,ZHANG Mingzhi.Usual failure and infrared diagnose of arrester[J].Insulators and Surge Arresters,2007(2):30-33,39.
[11]律方成,李海德,王子建,等.基于TEV与超声波的开关柜局部放电检测及定位研究[J].电测与仪表,2013,50(11):73-78.LVFangcheng,LI Haide,WANG ZI Jian,et al.[11]Research on partial discharge detection and location of switchgear based on TEV and ultrasonic wave methods[J].Electrical Measurement&Instrumentation,2013,50(11):73-78.
[12]Q/CSG 114002-2011.电力设备预防性试验[S].
[13]李小建.金属氧化物避雷器电流基本参数分析[J].高电压技术,2008,34(1):37-40.LIXiaojian.Analysing the basic parameters of currnts of metal oxide surge arreseter[J].High Voltage Engineering,2008,34(1):37-40.
[14]万四维.金属氧化物避雷器缺陷与阻性电流关系的分析探讨[J].电瓷避雷器,2007(5):31-34.WANSiwei.Approach to correlation of MOA defaults with its resistive current[J].Insulators and Surge Arresters,2007(5):31-34.
[2]严玉婷,江健武,钟建灵,等.金属氧化物避雷器事故分析及测试方法的比较研究[J].电瓷避雷器,2011(5):63-69.YANYuting,JIANG Jianwu,ZHONG Jianling,et al.MOA accident analysis and comparative study of testing methods[J].Insulators and Surge Arresters,2011(5):63-69.
[3]程秀芝,丁方,许红军.谈防雷氧化锌避雷器带电测试[J].电源技术应用,2012,15(Z1):57-59.CHENGXiuzhi,DING Fang,XU Hongjun.Discussion on the live testing on anti-thunder Zinc oxide arrester[J].Power Supply Technologles and Applications,2012,15(Z1):57-59.
[4]施围,邱毓昌,张乔根.高电压工程基础[M].北京:机械工业出版社,2006.
[5]李红蕾,桑建平,姜伟军,等.浅析MOA泄漏电流测试方法[J].电瓷避雷器,2006(2):40-43.LIHonglei,SANG Jianping,JIANG Weijun,et al.Analyze of the methods for MOA's leakage current[J].Insulators and Surge Arresters,2006(2):40-43.
[6]陈颖.金属氧化物避雷器带电检测诊断分析[J].河北电力技术,2013,32(6):13-15,38.CHEN Ying.Analysis on diagnosis of MOA on-line detection[J].Hebei Electric Power,2013,32(6):13-15,38.
[7]谢鹏,张国栋.金属氧化物避雷器试验测试方法的发展及应用[J].电瓷避雷器,2006(5):36-38,41.XIEPeng,ZHANG Guodong.Development and application of MOA testing methods[J].Insulators and Surge Arresters,2006(5):36-38,41.
[8]刘云鹏,夏巧群,李凌志.基于泄漏电流检测和红外成像技术的MOA故障综合诊断[J].高压电器,2007,43(2):133-135.LIUYunpeng,XIA Qiaoqun,LI Lingzhi.The synthetic diagnosis for MOA fault based on leakage current detection and infrared thermography technology[J].High Voltage Apparatus,2007,43(2):133-135.
[9]左文启,顾渊博.220 kV金属氧化物避雷器红外热缺陷及处理分析[J].电瓷避雷器,2010(1):26-28,32.ZUOWenqi,GU Yuanbo.Thermal defect of 220 kV MOAby infrared diagnosis and field treatments analysis[J].Insulators and Surge Arresters,2010(1):26-28,32.
[10]李庆玲,程济兵,张明智.避雷器的常见故障及红外诊断[J].电瓷避雷器,2007(2):30-33,39.LIQingling,CHENG Jibing,ZHANG Mingzhi.Usual failure and infrared diagnose of arrester[J].Insulators and Surge Arresters,2007(2):30-33,39.
[11]律方成,李海德,王子建,等.基于TEV与超声波的开关柜局部放电检测及定位研究[J].电测与仪表,2013,50(11):73-78.LVFangcheng,LI Haide,WANG ZI Jian,et al.[11]Research on partial discharge detection and location of switchgear based on TEV and ultrasonic wave methods[J].Electrical Measurement&Instrumentation,2013,50(11):73-78.
[12]Q/CSG 114002-2011.电力设备预防性试验[S].
[13]李小建.金属氧化物避雷器电流基本参数分析[J].高电压技术,2008,34(1):37-40.LIXiaojian.Analysing the basic parameters of currnts of metal oxide surge arreseter[J].High Voltage Engineering,2008,34(1):37-40.
[14]万四维.金属氧化物避雷器缺陷与阻性电流关系的分析探讨[J].电瓷避雷器,2007(5):31-34.WANSiwei.Approach to correlation of MOA defaults with its resistive current[J].Insulators and Surge Arresters,2007(5):31-34.