基于多次重判断技术的谐振接地系统选线新方法  

Fault Line Selection Method Based on Multiple Rejudge in the Resonant Grounding System

作　　者：陈斌[1] 

机构地区：[1]武汉大学电气工程学院,湖北武汉430072

出　　处：《华中电力》2011年第3期31-34,共4页Central China Electric Power

摘　　要：针对谐振接地系统单相接地故障频繁发生且选线较困难的现状,提出基于多次重判技术的选线新方法。该方法融合了两种基本的选线方法,即零序电流比相法和残留增量法,通过调节消弧线圈的电抗值对选线结果进行多次重判,选出故障馈线。通过EMTP仿真分析以及实际实验证明:该方法对故障馈线的判断非常准确,并具有较高的鲁棒性。This paper aimed frequent occurrence of resonant grounding system phase-to-ground fault and difficult to locate the fault line,proposed a new method applying multiple rejudge technology to select the fault line.This method is combining two basic location methods,namely the zero sequence current phase comparison method and residual increment method,through the adjustment of reactance value of extinction coil to multiply rejudge the selection results in order to locate the fault feeder line.Through the EMTP simulation analysis and actual tests show that the method of fault feeder judgment is accurate,and has high robustness.

关 键 词：谐振接地系统 接地故障选线 多次重判 

分 类 号：TM712[电气工程—电力系统及自动化]