基于电流融合的单相接地故障选线方法研究  

Research on Detecting Single-Phase-to-Ground Fault Feeder Based on Current Mix

作　　者：董海波[1] 廖红梅[1] 陈奎[1] 唐轶[1] 时昀[2] 

机构地区：[1]中国矿业大学信电学院,221008 [2]盱眙县供电局,211700

出　　处：《电气应用》2006年第9期79-82,共4页Electrotechnical Application

基　　金：中国矿业大学青年科研基金资助项目(2005A010)

摘　　要：分析自动跟踪补偿消弧线圈接地电网的零序测量电流分布规律。自动补偿消弧线圈接地电网由于消弧线圈补偿电流的加入,使故障馈出线的零序测量电流的相位和幅值发生变化,使直接利用基波零序电流的选线方法很难真正实现。针对自动补偿电网的特点,将零序测量电流与消弧线圈补偿电流融合作为小电流接地故障选线的计算判据,提出一种新的针对补偿电网的单相接地故障选线方法。The zero-sequence measurement current＇ s distribution in the automatic arc-suppressing coil earthed power system is analyzed. T.he compensation current of the arc-suppressing coil makes the phase and amplitude of the zero-sequence measurement current of the earthed fault feeder to vary, and increases difficulty of the detecting single-phase-to-ground fault feeder. To resolve this problem, a new method of detecting single-phase-to-ground fault feeder based on the current mix of the zero-sequence current and the compensation current is proposed.

关 键 词：消弧线圈 小电流接地选线 单相接地故障 电流融合 

分 类 号：TM862[电气工程—高电压与绝缘技术]