一种谐振接地系统故障残余电流补偿方法

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英文篇名：A Residual Current Compensation Methods for Resonance Grounding System 作者：朱侗 英文作者：ZHU Tong;Zhejiang Electric Transmission and Transformation Co.,Ltd.; 关键词：残余电流补偿 ; 谐振接地 ; 参数辨识 英文关键词：residual current compensation;;resonance grounding;;parameter identification 中文刊名：DLDZ 英文刊名：Power Electronics 机构：浙江省送变电工程有限公司; 出版日期：2019-07-20 出版单位：电力电子技术 年：2019 期：v.53;No.320 语种：中文; 页：DLDZ201907026 页数：4 CN：07 ISSN：61-1124/TM 分类号：98-100+107

摘要

单相接地短路是电力系统中最常见的故障,通过谐振接地方式能有效减小故障接地电流且工作在过补偿状态。然而谐振接地方式仅能有效补偿容性电流,线路中残余的阻性电流却无法补偿。此处研究了一种基于参数辨识得出系统的残余阻性电流并进行补偿的装置,通过仿真和实验验证了该方法的有效性。
        Single-phase grounding short circuit is the most common fault in power system while resonance grounding method can effectively reduce the fault grounding current which usually works in over compensation state.However,the resonance grounding method can only effectively compensate the capacitive current while cannot compensate the residual resistive current.It is studied a device that can effectively compensate for residual currents,before which parameter identification gives the system's residual resistive current and compensates.The effectiveness of this method is verified by the simulation and experiment.

引文

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