长线路末端电压升高的再思考

Reflection on the voltage rise at the long line end

分析了空载长线路在电容效应下工频过电压的产生机理。通过分析计算,讨论了不同电压等级下空载长线路末端升压系数的变化情况,为调度运行操作提供了参考。

This paper analyzes the mechanism of production of power frequency over-voltage under capacitance effect for unloaded line.Through calculation and analysis,the change of voltage-rise coefficient at the unloaded line end of different voltage class is discussed,which provides reference for distribution.