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.
出处
《微型机与应用》
2012年第11期81-83,共3页
Microcomputer & Its Applications
关键词
小电流接地系统
零序电流
零序补偿导纳
选线
non-effectively grounded system
zero-sequence current
zero-sequence compensation admittance
line selection
