| 特高压直流输电线路雷击故障特性分析 |
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| 引用本文： | 雷梦飞,王少华,刘黎,李健,周象贤,李特. 特高压直流输电线路雷击故障特性分析[J]. 电瓷避雷器, 2019, 0(3): 57-62 |
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| 作者姓名： | 雷梦飞 王少华 刘黎 李健 周象贤 李特 |
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| 作者单位： | 南瑞集团有限公司(国网电力科学研究院),南京211106;国网电力科学研究院武汉南瑞有限责任公司,武汉430074;国网浙江省电力公司电力科学研究院,杭州,310014 |
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| 基金项目： | 国家电网地方公司项目(非规范项目名称） |
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| 摘 要： | 以国网投运时间相对较长的±800 kV复奉线、锦苏线和宾金线为例,总结特高压直流线路运行情况和防雷性能,挖掘雷击故障特征和影响性因子。针对宾金线防雷性能显著低于复奉、锦苏线的情况,从地闪密度、地面倾角、绝缘配置三方面对比差异性,并综合计算分析雷击运行性能出现差异的原因。结果表明,绕击防护是特高压直流线路亟待提升的薄弱点,宾金线故障杆塔的绕击重启率理论上是复奉线故障杆塔的5.81倍,与实际运行结果6.87倍较为接近。
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| 关 键 词： | 雷击故障 特高压直流 输电线路 绕击 防雷 |
Analysis on Lightning Fault Characteristics of UHVDC Transmission Line |
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| LEI Mengfei,WANG Shaohua,LIU LI,LI Jian,ZHOU Xiangxian,LI Te. Analysis on Lightning Fault Characteristics of UHVDC Transmission Line[J]. Insulators and Surge Arresters, 2019, 0(3): 57-62 |
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| Authors: | LEI Mengfei WANG Shaohua LIU LI LI Jian ZHOU Xiangxian LI Te |
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| Affiliation: | (NARI Group Corporation(State Grid Electric Power Research Institute), Nanjing 211106, China;Wuhan NARI Limited Company of State Grid Electric Power Research Institute, Wuhan 430074, China;State Grid Zhejiang Electric Power Research Institute, Hangzhou 310014 , China) |
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| Abstract: | Such ±800 kV transmission lines having been put in service relatively long in State Grid Corporation of China(SGCC)as Fu-feng, Jin-su and Bin-jin are taken as study cases, through which operation status and lightning protection performance is summarized, and thereby characteristic and influence factors are discovered. Since line Bin-jin has worse performance than other two, a comparison of ground density, ground angle and insulation condition is made before a comprehensive calculation and analysis on the cause of such tremendous difference in lightning protection performance. It's indicated that lightning shielding is the weak point urgently need to be promoted for UHVDC transmission lines, and shielding failure flash over rate of lightning fault tower in line Bin-jin is 5.81 times that of Fu-feng, which is near to the practical result, namely 6.87. |
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| Keywords: | lightning fault UHVDC transmission line shielding failure lightning protection |
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