基于全电流谐波向量反演的避雷器带电测试方法初探
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摘要
针对目前占主流的容性电流补偿法测试中,不取电压互感器二次信号或者取站用变参考电压信号,带来较大原理性误差的问题,提出一种具有自主知识产权的基于全电流谐波向量反演的避雷器带电测试方法,原理性试验和现场初步测试表明,该方法可实现对阻性电流和谐波电流分量的准确反演,由于该方法只需提取避雷器全电流,可望成为避雷器带电测试简便、安全的解决方案。
Aiming at the problem that there brings large principal deviation without potential transformer secondary signal or based on station transformer reference voltage signal for the dominant capacitive current compensation method,an innovative method for live-line measurement of non-gap metal oxide surge arresters is presented based on the total-current harmonic waves processing. Both the principal test and the site measurement show that it can realize the accurate inversion of both resistive current and harmonic current component. The innovative method is expected to become convenient and safe solution of live-line measurement of non-gap metal oxide surge arresters,for the advantage that it depends only on all-current detection.
Aiming at the problem that there brings large principal deviation without potential transformer secondary signal or based on station transformer reference voltage signal for the dominant capacitive current compensation method,an innovative method for live-line measurement of non-gap metal oxide surge arresters is presented based on the total-current harmonic waves processing. Both the principal test and the site measurement show that it can realize the accurate inversion of both resistive current and harmonic current component. The innovative method is expected to become convenient and safe solution of live-line measurement of non-gap metal oxide surge arresters,for the advantage that it depends only on all-current detection.
引文
[1]周泽存,沈其工,方瑜,等.高电压技术[M].北京:中国电力出版社,2004.ZHOU Zecun,SHEN Qigong,FANG Yu,et al. High Voltage Technology[M]. Beijing:China Electric Power Press,2004.
[2]谢鹏,张国栋.金属氧化物避雷器测试方法的发展及应用[J].电瓷避雷器,2006(5):36-41.XIE Peng,ZHANG Guodong. Development and application of MOA testing methods[J]. Insulators and Surge Arresters,2006(5):36-41.
[3]万四维,李顺尧. 220kV金属氧化物避雷器不拆线试验方法及误差分析[J].电瓷避雷器,2006(6):42-44.WAN Siwei,LI Shuyao. Test on 220 k V metal oxide arrester without removing connecting lead and its error evaluation[J]. Insulators and Surge Arresters,2006(6):42-44.
[4]严玉婷,黄炜昭,江健武等.避雷器带电测试的原理及仪器比较和现场事故缺陷分析[J].电瓷避雷器,2011(2):57-62.YAN Yuting,HUANG Weizhao,et al. Principle and instrument comparison of arrester live line test and analysis on the flaw in field[J]. Insulators and Surge Arresters,2011(2):57-62.
[5]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(6):63-69.YAN Yuting,JIANG Jianwu,ZHONG Jingling,et al.MOA accident analysis and comparative study of testing methods[J]. Insulators and Surge Arresters,2011(6):63-69.
[6]左文启,顾渊博. 220 k V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):26-32.ZUO Wenqi,GU Yuanbo. Thermal Defect of 220 k V MOA by infrared diagnosis and field treatments analysis[J]. Insulators and Surge Arresters,2010(1):26-32.
[7]姚爱明,幸荣霞.一起金属氧化物避雷器缺陷数据的分析及预防措施[J].电瓷避雷器,2011(5):61-69.YAO Aiming,XING Rongxia. Analysis on defect data of MOA in an accident and precautions[J]. Insulators and Surge Arresters,2011(5):61-69.
[2]谢鹏,张国栋.金属氧化物避雷器测试方法的发展及应用[J].电瓷避雷器,2006(5):36-41.XIE Peng,ZHANG Guodong. Development and application of MOA testing methods[J]. Insulators and Surge Arresters,2006(5):36-41.
[3]万四维,李顺尧. 220kV金属氧化物避雷器不拆线试验方法及误差分析[J].电瓷避雷器,2006(6):42-44.WAN Siwei,LI Shuyao. Test on 220 k V metal oxide arrester without removing connecting lead and its error evaluation[J]. Insulators and Surge Arresters,2006(6):42-44.
[4]严玉婷,黄炜昭,江健武等.避雷器带电测试的原理及仪器比较和现场事故缺陷分析[J].电瓷避雷器,2011(2):57-62.YAN Yuting,HUANG Weizhao,et al. Principle and instrument comparison of arrester live line test and analysis on the flaw in field[J]. Insulators and Surge Arresters,2011(2):57-62.
[5]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(6):63-69.YAN Yuting,JIANG Jianwu,ZHONG Jingling,et al.MOA accident analysis and comparative study of testing methods[J]. Insulators and Surge Arresters,2011(6):63-69.
[6]左文启,顾渊博. 220 k V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):26-32.ZUO Wenqi,GU Yuanbo. Thermal Defect of 220 k V MOA by infrared diagnosis and field treatments analysis[J]. Insulators and Surge Arresters,2010(1):26-32.
[7]姚爱明,幸荣霞.一起金属氧化物避雷器缺陷数据的分析及预防措施[J].电瓷避雷器,2011(5):61-69.YAO Aiming,XING Rongxia. Analysis on defect data of MOA in an accident and precautions[J]. Insulators and Surge Arresters,2011(5):61-69.