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基于故障电流暂态分量的测距研究
引用本文:林湘宁,刘沛,刘世明,,井嵘. 基于故障电流暂态分量的测距研究[J]. 电力系统自动化, 2002, 26(3): 45-51
作者姓名:林湘宁  刘沛  刘世明    井嵘
作者单位:1. 华中科技大学电气与电子工程学院,湖北省,武汉市,430074;东方电子信息产业股份有限公司综自所,山东省,烟台市,264001
2. 华中科技大学电气与电子工程学院,湖北省,武汉市,430074
3. 烟台市电业局,山东省,烟台市,264001
基金项目:国家自然科学基金 (5 96 770 10 )
摘    要:提出利用故障生成的电流暂态分量进行故障定位的思想。通过与方向行波测距进行比较,指出两者在利用行波表示的时间-距离对应信息上的一致性。与传统的电流行波测距法相比,该算法无需相邻健全线路的电流,从而具有更 好的适应系统运行方式的能力,并节省了测距装置的模拟和数字输入通道。仿真试验表明, 在合适的小波滤波器和小波分解算法的作用下,暂态测距与利用方向行波测距的精度基本相 同。其在测距精度上同样不受故障类型、接地电阻、线路长度、采样率、系统运行方式的影响,具有良好的波头定位能力。

关 键 词:电力系统; 暂态电流; 故障测距; 小波算法
收稿时间:1900-01-01
修稿时间:1900-01-01

Studies on Fault Location of Fault-induced Transient Component
Lin Xiangning,,L iu Pei,L iu Shiming,,Jing Rong .Huazhong U niversity of Science and Technology,Wuhan ,China . Group of Dongfang Electronic Inform ation Technology,Yantai ,China .Yantai Power Industry Bureau,Yantai. Studies on Fault Location of Fault-induced Transient Component[J]. Automation of Electric Power Systems, 2002, 26(3): 45-51
Authors:Lin Xiangning    L iu Pei  L iu Shiming    Jing Rong .Huazhong U niversity of Science  Technology  Wuhan   China . Group of Dongfang Electronic Inform ation Technology  Yantai   China .Yantai Power Industry Bureau  Yantai
Affiliation:Lin Xiangning1,2,L iu Pei2,L iu Shiming1,2,Jing Rong3 1.Huazhong U niversity of Science and Technology,Wuhan430 0 74,China 2 . Group of Dongfang Electronic Inform ation Technology,Yantai 2 6 40 0 1,China 3.Yantai Power Industry Bureau,Yantai2
Abstract:A new fault location scheme using the fault- generated high- frequency transient current is presented in this paper. This schem e is the same as the one using travelling wave in the aspect of fault location,although there are the different coefficients of travelling wave wavehead between them . The advantage of this scheme depend on thatitonly needs the current of the faulted line to consist of locating criterion,which makes it be applied on substation with single transm ission line. Besides,it saves the analog and digital channels of the location device. It should be highlighted that this schem e is also insensitive to the bus structures and system param eters,the types of faults,the earth resistance value,the line length, sampling rate or the operation modes of power system . Simulations carried by ATP software have proved the availability and advantages of the schem e presented in this paper.
Keywords:power systems  transient current  fault location  wavelet algorithm
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