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瓦特表法与电流电压法在大地网接地电阻检测中的对比

Guizhou Electric Power Technology(2015)

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Abstract
通过对某电站的主接地网接地电阻进行测试,为其防雷接地工作提供参考,保证电气设备安全可靠地运行.本次测试采用三极直线法布置.为节省人力、物力,利用发电站中220 kV架空输电线路两相作为电流极与电压极连接线路,在测试后用瓦特表法和电流电压法计算接地电阻值,并对其比对结果进行分析,得出瓦特表法可以在计算接地网电阻中得到更为精确结果的结论.
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