摘要
给出了孤岛效应定义和孤岛效应形成原理。介绍了孤岛效应对电网、设备形成的危害。阐述了常用的孤岛效应检测方法及其遇到的一些问题。为了解决这些问题,保障电网安全稳定运行,笔者设计了一种基于小波分析的孤岛效应检测方法。仿真结果表明,该方法能够快速准确地检测出孤岛效应的发生,不会对电网产生谐波污染,可以有效地减小不可检测域,提高检测速度。
This paper introduces the definition and forming principle of islanding effect, analyzes its harm to electric power network and equipments, and expounds the common detection methods and their problems in practice. In order to solve the problems and to guarantee the safe and stable running of electric power network, the detection method of islanding effect based on wavelet analysis is designed. Simulation proves that this method is able to detect accurately islanding effect in short time without harmonic pollution and narrow the undetected range and accelerate detection.
出处
《黑龙江电力》
CAS
2012年第5期353-355,共3页
Heilongjiang Electric Power
关键词
孤岛效应
小波分析
分布式并网发电系统
islanding effect
wavelet analysis
distributed grid- connected system
