一次触发闪电引起的SPD接地线电流特征分析

doi:10.11930/j.issn.1004-9649.2016.05.049.04

中国电力 ›› 2016, Vol. 49 ›› Issue (5): 49-52.DOI: 10.11930/j.issn.1004-9649.2016.05.049.04

一次触发闪电引起的SPD接地线电流特征分析

曹雪芬¹，陈绍东¹，颜旭¹，张勇²，谢智勇²

1．广东省防雷中心，广东广州510080；
2.广州市防雷减灾管理办公室，广东广州510080

收稿日期:2016-01-12 出版日期:2016-05-16 发布日期:2016-05-16
作者简介:曹雪芬（1988—），女，湖北随州人，助理工程师，从事雷电防护及雷电灾害风险评估方面的工作。E-mail: caoxuefen@hotmail.com
基金资助:
广东省气象局面上资助项目（2014B12）；国家重点基础研究发展计划（973计划）资助项目（2014CB441405）

Characteristics Analysis on SPD Grounding Current for Overhead Distribution Line Based on Artificial-Triggered Lightning

CAO Xuefen¹, CHEN Shaodong¹, YAN Xu¹, ZHANG Yong², XIE Zhiyong²

1. Guangdong Lightning Protection Center, Guangzhou 510080, China;
2. Office of the Management of Lightning Protection and Disaster Reduction in Guangzhou City, Guangzhou 510080, China

Received:2016-01-12 Online:2016-05-16 Published:2016-05-16
Supported by:
This work is supported by Funded Projects in the Meteorological Situation in Guangdong Province(No. 2014B12), and by National Basic Research Program of China (973 Program) (No. 2014CB441405).

摘要/Abstract

摘要： 基于一次人工触发闪电，对架空配电线路上氧化锌避雷器（surge protective device，SPD）的接地线电流特征进行了分析。在分析时发现，近距离闪电发生时，架空线路耦合产生过电压引起的SPD接地线电流峰值达到-961.0 A，平均10%~90%上升时间为17.5 μs，平均半峰值时间为68.1 μs，与实验室标准测试波形有较大的差异。另外，仅由于雷电电磁脉冲产生感应过电压的冲击，SPD是不容易被损坏的。经相关性分析发现，回击引起SPD接地线电流参数与触发闪电10%~90%上升时间对应陡度有密切的关系，SPD接地线电流峰值、半峰值时间、中和电量以及单位电阻能量都与其有较好的线性相关，拟合优度R2分别为0.83、0.83、0.90及0.94。

关键词: SPD, 人工触发闪电, 回击电流, 配电线路, 接地线电流

Abstract: The waveform characteristics of grounding current of SPD for overhead distribution lines is investigated based on an artificial-triggered lightning. It is found that when lightning occurs at close range, the SPD grounding wire current resulted from overhead coupling over voltage reaches peak value of 961.0 A, average rise time of 10% to 90% of 17.5 μs, and average half peak width of 68.1 μs. The testing results are much different from standard laboratory test. In addition, SPD is not easily damaged by induced electromagnetic pulse due to lightning over-voltage shock. Correlation analysis finds that parameters of SPD grounding wire current are closely related to the steepness of 10% to 90% rise time of artificial-triggered lightning current. SPD grounding line current peak, half peak width, amount of charge neutralized, as well as energy of per unit resistance have good linear correlation with the steepness of 10% to 90% rise time of artificial-triggered lightning current. The linear correlation coefficients are 0.83, 0.83, 0.90 and 0.94.

Key words: SPD, artificial-triggered lightning, return stroke current, distribution line, grounding line current

中图分类号:

TM862

曹雪芬，陈绍东，颜旭，张勇，谢智勇. 一次触发闪电引起的SPD接地线电流特征分析[J]. 中国电力, 2016, 49(5): 49-52.

CAO Xuefen, CHEN Shaodong, YAN Xu, ZHANG Yong, XIE Zhiyong. Characteristics Analysis on SPD Grounding Current for Overhead Distribution Line Based on Artificial-Triggered Lightning[J]. Electric Power, 2016, 49(5): 49-52.

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参考文献

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一次触发闪电引起的SPD接地线电流特征分析

Characteristics Analysis on SPD Grounding Current for Overhead Distribution Line Based on Artificial-Triggered Lightning

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一次触发闪电引起的SPD接地线电流特征分析

Characteristics Analysis on SPD Grounding Current for Overhead Distribution Line Based on Artificial-Triggered Lightning

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