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高压电器  2015 

选相合闸对短路电流参数的影响及其在容量试验中的应用

DOI: 10.13296/j.1001-1609.hva.2015.09.028, PP. 164-168

Keywords: 选相合闸,容量试验,短路电流,同期合闸

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Abstract:

选相合闸可改变短路电流的直流分量。文中计算了在不同相位合闸时短路电流的峰值,分析了非对称电流零点及峰值时刻的变化趋势,公式推导了三相不同期合闸时获得最大冲击系数时三相的合闸相位,计算了在不同的极间同期条件下电流的最大峰值系数。结果表明三相同期性对关合电流峰值有一定影响,容量试验可利用这些特点调整电流参数。

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