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一种站内接地短路时避雷线分流系数分析新方法研究

, PP. 48-52

Keywords: 接地短路,避雷线,分流阻抗,分流系数

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Abstract:

对变电站内接地短路时短路电流分布进行了分析,对避雷线-杆塔系统进行了研究。通过对其等效阻抗即避雷线分流阻抗与杆塔总基数之间关系进行分析,得出避雷线分流阻抗主要决定于第15基杆塔之前的避雷线-杆塔系统的结论,进而提出实用避雷线分流阻抗模型,在此基础上推导出避雷线分流系数。该方法克服了目前方法的一些缺陷,在参数取值准确度上具有很大优越性。

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