小电流接地系统单相接地选线装置设计与实现  

The design and implementation of line selection device for noneffectively ground system

作　　者：周鹏[1] 周玉国[1] 张景景[1] 于婷婷[1] 

机构地区：[1]青岛理工大学自动化工程学院,山东青岛266033

出　　处：《微型机与应用》2012年第11期81-83,共3页Microcomputer & Its Applications

摘　　要：针对小电流接地故障诊断难的问题,设计了一个基于零序电流、零序电压的实时检测系统,对供电系统进行检测并对故障线路进行选线。采用了多任务、可移植、可裁剪的嵌入式操作系统μC/OS-II。为防止中性点带补偿系统对于故障线路的过补偿影响,系统还加入了补偿零序导纳判据对这种接地情况下的故障进行检测。选线系统采用零序电压触发方式,既提高了实时性,也增大了选线的准确性。For the difficulties of diagnosing non-effectively ground system, a new real-time diagnostic system is designed in this paper. Fault line selection is the main task. Zero-sequence current and zero-sequence voltage are detected in the paper. A multi-task, portable, scalable operating system μC/OS-Ⅱ is used. Over-compensation condition maybe come up in some power network, so zero-sequence compensation admittance is also detected. Zero-sequence voltage is used as the starting methods, and it improves the system real-time.

关 键 词：小电流接地系统 零序电流 零序补偿导纳 选线 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]