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电网技术  2006 

基于电容式电压互感器二次信号的行波故障定位方法

, PP. 101-105

Keywords: 电容式电压互感器,故障定位,高频振荡,小波变换,行波,电力系统

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Abstract:

根据行波定位的技术特点,建立了电容式电压互感器(CapacitorVoltageTransformer,CVT)高频暂态仿真模型,分析了CVT行波信号的传变特性,论证了利用CVT二次信号进行故障定位的可行性,在此基础上提出了利用小波分析进行行波波头检测的实现方法。仿真结果表明,利用CVT二次信号,通过小波变换方法可准确识别电压行波波头,实现高精度的故障定位。

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