基于五次谐波电流变化特征的单相接地故障选线方法  

The Method of Single-phase Earth Fault Route Selection Based on Characteristic of Five Subharmonic Electric Current Change

作　　者：刘兴艳[1] 董洋洋[1] 

机构地区：[1]河南理工大学电气工程及其自动化学院,河南焦作454000

出　　处：《电子质量》2010年第3期35-37,共3页Electronics Quality

摘　　要：针对基于五次谐波电流的单相接地故障选线装置,由于系统中五次谐波含量不高,以及负荷中谐波源的影响,整定困难,实际选线精度不高的问题。系统地分析了发生单相接地前后故障回路、非故障回路中五次谐波电流变化特点,提出了基于五次谐波电流变化特征的单相接地故障选线方法,仿真结果表明,该方法有效可行。Based on the devices of the five subharmonic electric current single-phase earth fault route selection,because that the content of five subhermonic in the system are not high. as well as in the load the overtone source＇s influence,so that the installation have some problems that it is difficult to selection the route actually and proecisionly, We analyzed systematically the situation when the system has had around the single-phase earth in the breakdown return route, the non-breakdown return route five subharmonic electric currant change characteristic, proposed based on electric current change characteristic of five subharmonic single-phase earth fault route selection method. The simulation result indicated that this method effective and feasible.

关 键 词：小电流接地系统 消弧线圈 故障选线 五次谐波 

分 类 号：TM862[电气工程—高电压与绝缘技术]