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电网技术  2014 

雷击输电线路时杆塔各处雷电流监测仿真分析

DOI: 10.13335/j.1000-3673.pst.2014.11.047, PP. 3249-3253

Keywords: 输电线路杆塔,雷击电流分布,雷电流测量线圈,雷电波形反演

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Abstract:

基于PSCAD/EMTDC构建了输电线路杆塔仿真模型,根据输电线路的雷击情况,考虑在雷击塔顶、雷击档距中间以及雷击导线这3种情况下,分析线路杆塔中各处电流分布情况,可为安装在输电线路杆塔上的雷电流波形监测线圈提供理论依据。合理地布置雷电流测量线圈能够监测到击中本级杆塔、档距中间以及相邻几级杆塔的落雷,因而减小了监测装置的安装数量,而且也能更大程度地采集到雷电波形。综合考虑了采集到的雷电流波形的反演问题,最终定位了雷电流测量线圈的安装位置。

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