相邻带电体对500kV变电站母线避雷器泄露电流的影响研究
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摘要
500 kV变电站高压避雷器采用多节,节间连接法兰和避雷器周围带电设备构成的多导体系统之间存在复杂且难以量化、分离的部分电容电流干扰.在线监测技术无法准确测得泄漏电流(全电流)中的阻性分量,使得泄漏电流测量值难以真实反映避雷器的性能状况,难以发现设备的早期故障.采用阻容网络模型方法,分别考虑双回线路和相邻带电设备(电压互感器)在不同距离下对避雷器全电流和相角的影响,给出了避雷器全电流分析模型简化的条件,探索避雷器泄漏电流各分量的计算和分离的方法,为避雷器泄漏电流阻性电流分量的准确测算提供思路.
The high voltage surge arrester in 500 kV substation has many sections. There is a complex and quantifiable and partial capacitance current interference between the interconnecting flange and the multi conductor system consisting of live equipment around the lightning arrester. Online monitoring technology can not accurately measure the resistive components of leakage current(full current), which makes it difficult to truly reflect the performance of arresters; and it is difficult to detect early failures of equipment. This paper uses the resistance-capacitance(RC) network model method, considering double circuit and the adjacent energized equipment(voltage transformer) by calculating the effect on arrester full current and phase angle at different distances, and gives the simplified conditions of arrester full current analysis model. The methods of calculation and separation of each component of leakage current of arrester are explored in order to provide ideas to accurately calculate the leakage current resistance current of lightning arrester.
The high voltage surge arrester in 500 kV substation has many sections. There is a complex and quantifiable and partial capacitance current interference between the interconnecting flange and the multi conductor system consisting of live equipment around the lightning arrester. Online monitoring technology can not accurately measure the resistive components of leakage current(full current), which makes it difficult to truly reflect the performance of arresters; and it is difficult to detect early failures of equipment. This paper uses the resistance-capacitance(RC) network model method, considering double circuit and the adjacent energized equipment(voltage transformer) by calculating the effect on arrester full current and phase angle at different distances, and gives the simplified conditions of arrester full current analysis model. The methods of calculation and separation of each component of leakage current of arrester are explored in order to provide ideas to accurately calculate the leakage current resistance current of lightning arrester.
引文
[1] 陈坤,谷山强,周航,等.500 kV交流线路避雷器不同配置方案对同塔双回线路防雷性能的影响[J].电瓷避雷器,2017,(5):59-64.Chen Kun,Gu Shanqiang,Zhou Hang,et al.Influence of different configuration schemes of 500 kV AC line arrester on lightning protection performance of transmission lines with double-circuit on the same tower[J] Insulators and Surge Arresters,2017,(5):59-64.
[2] 国家电网公司.国家电网公司2005-2010年架空输电线路运行分析报告[R],2011.State Grid Corporation of China.Operation analysis of overhead power transmission lines of State Grid Corporation of China between 2005 to 2010[R],2011.
[3] Haddad A,Fuentes-Rosado J,German D M,et al.Characterisation of ZnO surge arrester elements with direct and power frequency voltages[J].IEE Proceedings A-Physical Science,Measurement and Instrumentation,Management and Education,1990,137(5):269-279.
[4] 严璋.电气绝缘在线检测技术[M].北京:中国电力出版社,1995:28.Yan Zhang.Electrical Insulation on-Line Detection Technology [M].Beijing:China Electric Power Press,1995:28.
[5] 郭磊,张科,陈瑞,等.金属氧化物避雷器状态评价方法及应用分析[J].电瓷避雷器,2013,(6):95-99.Guo Lei,Zhang Ke,Chen Rui,et al.The method and application analysis of the metal oxide arrester condition evaluation[J].Insulators and Surge Arresters,2013,(6):95-99.
[6] 李庆玲,王兴贵,李效珍,等.氧化锌避雷器应用探讨[J].高压电器,2009,45(2):130-131.Li Qingling,Wang Xinggui,Li Xiaozhen,et al.Discussion about application of MOA[J].High Voltage Apparatus,2009,45(2):130-131.
[7] 王世山,李彦明,李建成.金属氧化物避雷器均压电容器的选择计算[J].电瓷避雷器,2002,(6):33-38.Wang Shishan,Li Yanming,Li Jiancheng.Computation for selection of condenser for well-distributed voltage on MOA [J].Insulators and Surge Arresters,2002,(6):33-38.
[8] Li Jinliang,Ruan Jiangjun,Du Zhiye,et al.Analysis of interference current for high-voltage arresters based on resistance-capacitance network[J].Insulators & Surge Arresters,2013,51(3):1-4.
[9] 李金亮,杜志叶,阮江军,等.基于有限元法的避雷器阻性电流检测的相间干扰计算分析[J].电工技术学报,2016,(18):184-190,198.Li Jinliang,Du Zhiye,Ruan Jiangjun,et al.Calculation and analysis of phase to phase interference of arrester based on finite element method[J].Transactions of China Electrotechnical Society,2016,(18):184-190,198.
[10] 李金亮,阮江军,杜志叶,等.基于阻容网络的高压避雷器干扰电流分析[J].电瓷避雷器,2013,(5):101-106.Li Jinliang,Ruan Jiangjun,Du Zhiye,et al.High voltage arrester interference current analysis based on RC network[J].Insulators and Surge Arresters,2013,(5):101-106.
[11] 李顺尧.金属氧化锌避雷器测试方法对比与分析[J].高压电器,2010,46(3):94-97.Li Shunyao.Comparison and analysis of MOA testmethods [J].High Voltage Apparatus,2010,46(3):94-97.
[12] 张振洪,臧殿红.氧化锌避雷器在线监测方法的研究[J].高压电器,2009,45(5):126-129.Zhang Zhenhong,Zang Dianhong.Study on the on line monitoring method of metal oxide surge arrester [J].High Voltage Apparatus,2009,45(5):126-129.
[13] 傅中君.应用过零法和谐波分析法精确测量MOA阻性电流基波[J].电瓷避雷器,2004,(2):35-37,39.Fu Zhongjun.Accurately measuring MOA’s resistive fundamental harmonic leakage current by over zero & harmonic analysis methods [J].Insulators and SurgeArresters,2004,(2):35-37,39.
[14] 周龙,陈继东,文远芳,等.氧化锌避雷器的监测和诊断方法研究[J].电工电能新技术,1998,(1):52-55.Zhou long,Chen Jidong,Wen Yuanfang,et al.Research on monitoring and diagnosis method of zinc oxide arrester [J].Advanced Technology of Electrical Engineering and Energy,1998,(1):52-55
[15] 李凌燕,杜志叶,阮江军,等.35 kV柜内用避雷器在线监测中相间干扰的数值计算分析[J].电瓷避雷器,2016,(2):79-84.Li Lingyan,Du Zhiye,Ruan Jiangjun,et al.Numerical calculation and analysis of interphase interference in on-line monitoring of arrester used in 35 kV cabinet [J].Insulators and Surge Arresters,2016,(2):79-84.
[16] 任卉嵩,李金亮,杜志叶,等.线路避雷器阻性泄漏电流在线监测中的相间干扰分析研究[J].电瓷避雷器,2016,(4):83-87,92.Ren Huisong,Li Jinliang,Du Zhiye,et al.Analysis of interphase interference in on-line monitoring of resistive leakage current of line arresters [J].Insulators and Surge Arresters,2016,(4):83-87,92.
[2] 国家电网公司.国家电网公司2005-2010年架空输电线路运行分析报告[R],2011.State Grid Corporation of China.Operation analysis of overhead power transmission lines of State Grid Corporation of China between 2005 to 2010[R],2011.
[3] Haddad A,Fuentes-Rosado J,German D M,et al.Characterisation of ZnO surge arrester elements with direct and power frequency voltages[J].IEE Proceedings A-Physical Science,Measurement and Instrumentation,Management and Education,1990,137(5):269-279.
[4] 严璋.电气绝缘在线检测技术[M].北京:中国电力出版社,1995:28.Yan Zhang.Electrical Insulation on-Line Detection Technology [M].Beijing:China Electric Power Press,1995:28.
[5] 郭磊,张科,陈瑞,等.金属氧化物避雷器状态评价方法及应用分析[J].电瓷避雷器,2013,(6):95-99.Guo Lei,Zhang Ke,Chen Rui,et al.The method and application analysis of the metal oxide arrester condition evaluation[J].Insulators and Surge Arresters,2013,(6):95-99.
[6] 李庆玲,王兴贵,李效珍,等.氧化锌避雷器应用探讨[J].高压电器,2009,45(2):130-131.Li Qingling,Wang Xinggui,Li Xiaozhen,et al.Discussion about application of MOA[J].High Voltage Apparatus,2009,45(2):130-131.
[7] 王世山,李彦明,李建成.金属氧化物避雷器均压电容器的选择计算[J].电瓷避雷器,2002,(6):33-38.Wang Shishan,Li Yanming,Li Jiancheng.Computation for selection of condenser for well-distributed voltage on MOA [J].Insulators and Surge Arresters,2002,(6):33-38.
[8] Li Jinliang,Ruan Jiangjun,Du Zhiye,et al.Analysis of interference current for high-voltage arresters based on resistance-capacitance network[J].Insulators & Surge Arresters,2013,51(3):1-4.
[9] 李金亮,杜志叶,阮江军,等.基于有限元法的避雷器阻性电流检测的相间干扰计算分析[J].电工技术学报,2016,(18):184-190,198.Li Jinliang,Du Zhiye,Ruan Jiangjun,et al.Calculation and analysis of phase to phase interference of arrester based on finite element method[J].Transactions of China Electrotechnical Society,2016,(18):184-190,198.
[10] 李金亮,阮江军,杜志叶,等.基于阻容网络的高压避雷器干扰电流分析[J].电瓷避雷器,2013,(5):101-106.Li Jinliang,Ruan Jiangjun,Du Zhiye,et al.High voltage arrester interference current analysis based on RC network[J].Insulators and Surge Arresters,2013,(5):101-106.
[11] 李顺尧.金属氧化锌避雷器测试方法对比与分析[J].高压电器,2010,46(3):94-97.Li Shunyao.Comparison and analysis of MOA testmethods [J].High Voltage Apparatus,2010,46(3):94-97.
[12] 张振洪,臧殿红.氧化锌避雷器在线监测方法的研究[J].高压电器,2009,45(5):126-129.Zhang Zhenhong,Zang Dianhong.Study on the on line monitoring method of metal oxide surge arrester [J].High Voltage Apparatus,2009,45(5):126-129.
[13] 傅中君.应用过零法和谐波分析法精确测量MOA阻性电流基波[J].电瓷避雷器,2004,(2):35-37,39.Fu Zhongjun.Accurately measuring MOA’s resistive fundamental harmonic leakage current by over zero & harmonic analysis methods [J].Insulators and SurgeArresters,2004,(2):35-37,39.
[14] 周龙,陈继东,文远芳,等.氧化锌避雷器的监测和诊断方法研究[J].电工电能新技术,1998,(1):52-55.Zhou long,Chen Jidong,Wen Yuanfang,et al.Research on monitoring and diagnosis method of zinc oxide arrester [J].Advanced Technology of Electrical Engineering and Energy,1998,(1):52-55
[15] 李凌燕,杜志叶,阮江军,等.35 kV柜内用避雷器在线监测中相间干扰的数值计算分析[J].电瓷避雷器,2016,(2):79-84.Li Lingyan,Du Zhiye,Ruan Jiangjun,et al.Numerical calculation and analysis of interphase interference in on-line monitoring of arrester used in 35 kV cabinet [J].Insulators and Surge Arresters,2016,(2):79-84.
[16] 任卉嵩,李金亮,杜志叶,等.线路避雷器阻性泄漏电流在线监测中的相间干扰分析研究[J].电瓷避雷器,2016,(4):83-87,92.Ren Huisong,Li Jinliang,Du Zhiye,et al.Analysis of interphase interference in on-line monitoring of resistive leakage current of line arresters [J].Insulators and Surge Arresters,2016,(4):83-87,92.