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基于能量比函数的串补线路行波故障测距

DOI: 10.13334/j.0258-8013.pcsee.2015.20.013, PP. 5228-5234

Keywords: 串补线路,行波,故障测距,能量比,时窗

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Abstract:

因串补电容的存在,串补线路故障行波过程十分复杂,行波波头识别困难。该文从行波能量的角度出发,采用特定时窗下的能量比函数法来获取故障行波波头,实现串补线路的行波测距。研究串补电容对能量比函数的影响,论证能量比函数法应用于串补线路故障测距的正确性,并分析时窗宽度的选取原则。针对某串补线路,建立仿真模型,采用双端测距法,在考虑干扰的情况下,将能量比法用于串补线路故障测距,对串补装置位于线路中间和两侧的情况分别进行仿真验证。ATP/EMTP仿真试验数据处理结果表明,所提方法能有效应用于串补线路故障测距,精度高,计算简便,不受串补装设位置和故障合闸角的影响。

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