张宗熙,薛永端,董立明,蔡卓远

• 1:广东电网中山供电局东区供电分局
• 2:中国石油大学(华东)新能源学院

摘要(Abstract)：

针对不接地系统偶发两出线相继接地故障处理难题，利用故障前后工频电气量信息，提出了一种适应于不接地系统同名相两点接地故障的选线方法。通过建立不接地系统同名相两点接地故障复合序网，推导出母线零序电压、接地点故障电流、各出线零序电流和无功功率等工频电气量随两个接地点过渡电阻的变化规律。在此基础上，分析了原有选线方法的适应性问题，并提出了基于两阶段无功功率方向的选线方法。最后，通过仿真验证了同名相两点接地故障特征与所提方法的可行性。

关键词(KeyWords)： 不接地系统;同名相两点接地;工频电气量;无功功率方向;选线方法

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目（52077221）;; 广东电网有限责任公司科技项目（032000KK52180064）

作者(Author): 张宗熙,薛永端,董立明,蔡卓远

DOI: 10.19635/j.cnki.csu-epsa.000856

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