| 一次多回击自然闪电引发的输电线路感应过电压特征分析 |
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| 引用本文： | 王孝波,陈绍东,张义军,黄智慧,蔡力.一次多回击自然闪电引发的输电线路感应过电压特征分析[J].电网技术,2011(2):163-168. |
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| 作者姓名： | 王孝波 陈绍东 张义军 黄智慧 蔡力 |
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| 作者单位： | 广州市气象局;广东省防雷中心;中国气象科学研究院;武汉大学高电压与绝缘技术研究所; |
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| 基金项目： | 中国气象局新技术推广重点项目(CMATG2008Z07); 公益性行业科研专项(GY2007622) |
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| 摘 要： | 针对野外低压架空输电线路开展了过电压防护试验研究。通过一次典型的多回击自然闪电引起的过电压并结合闪电定位资料,对输电线路不同位置的入户端及采集器前端的过电压大小、采集器前端电涌保护器(surge protective device,SPD)残压特性及入户端L线过电压和闪电回击电流之间的关系进行了分析和探讨。通过分析发现:近距离的闪电能在架空输电线路上产生几kV的感应过电压,过电压持续时间平均约1.0 ms,采集器前端安装SPD动作后,较远的入户端过电压波形也会受其影响;采集器前端SPD动作残压持续时间平均约218μs,比标准8/20μs冲击波试验持续时间长;入户端感应过电压、回击电流与距离有很好的线性拟合关系。
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| 关 键 词： | 自然闪电 多回击 感应过电压 输电线路 线性拟合 |
Analysis on Characteristics of Induced Over-Voltage in Transmission Line Caused by Natural Lightning With Multi Return Strokes |
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| WANG Xiaobo,CHEN Shaodong,ZHANG Yijun,HUANG Zhihui,CAI Li.Analysis on Characteristics of Induced Over-Voltage in Transmission Line Caused by Natural Lightning With Multi Return Strokes[J].Power System Technology,2011(2):163-168. |
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| Authors: | WANG Xiaobo CHEN Shaodong ZHANG Yijun HUANG Zhihui CAI Li |
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| Affiliation: | WANG Xiaobo1,CHEN Shaodong2,ZHANG Yijun3,HUANG Zhihui2,CAI Li4(1.Guangzhou Meteorological Bureau,Guangzhou 510060,Guangdong Province,China,2.Guangdong Lightning Protection Center,Guangzhou 510600,3.Chinese Academy of Meteorological Sciences,Haidian District,Beijing 100081,4.High Voltage and Insulation Research Institute,Wuhan University,Wuhan 430072,Hubei Province,China) |
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| Abstract: | The experimental investigation on over-voltage protection for outdoor low-voltage overhead transmission lines is carried out.Based on a typical natural lightning with multi return strokes and combining with lightning location data,the values of over-voltages at entrance terminals for housings and those at front-side of collector,which locate at differnet positions of transmission lines and the residual voltage characteristics of surge protective devices(SPD) located at collector front-side as well as the re... |
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| Keywords: | natural lightning multi return strokes induced over-voltage transmission line linear fitting |
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