王成斌;贠志皓;张恒旭;石访;凌平;谢邦鹏;

• 1:电网智能化调度与控制教育部重点实验室(山东大学)
• 2:国网上海市电力公司电力科学研究院
• 3:国网上海市电力公司

摘要(Abstract)：

随着分布式电源以分支线形式大量接入配电网,多分支线故障定位算法在有效性和准确性上面临着重大的挑战。为减少线路参数不准确引起的定位误差,提出了一种新型线路参数无关故障定位算法。此方法仅利用故障后线路各端电压电流的同步测量值和线路长度,无需知道各条线路参数,根据故障点和分接点处由相邻节点电气量推算的电压相等的原理构建测距方程组。算法假设故障发生在各区段,分别列写相应测距方程组,并通过信赖域算法分别求解各组方程中的故障距离、分接点位置、各线路单位长度阻抗参数,最后根据各组解是否合理直接判断故障位置。MATLAB/Simulink仿真结果表明,此算法具有较高的精度,基本不受线路参数、故障位置、过渡电阻、非对称故障类型的影响。

关键词(KeyWords)： 配电网;故障定位;多分支线路;参数无关

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目(2017YFB0902800);; 国家电网公司科技项目(SGTYHT/16-JS-198)~~

作者(Author): 王成斌;贠志皓;张恒旭;石访;凌平;谢邦鹏;

Email:

DOI: 10.13335/j.1000-3673.pst.2018.2733

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