分布式电源并网运行的孤岛检测方法研究

Research on Islanding Detection Method for Grid-connected with DG

介绍了分布式发电的发展现状及其并网运行时对电力系统的影响,分析了过/欠电压、频率检测法,提出利用电压前馈正反馈与其结合孤岛检测方法并对其进行仿真分析。结果表明该方法能够快速有效地响应外部信息,有利于保证电网的安全稳定运行。

The development of distributed generation and its impact on the system are introduced. The under/over-voltage and frequency methods are discussed, the voltage feed forward positive feedback combination with the under/over- voltage and fiequency method are proposed. The simulations of the proposed method are carried out. The simulation results demonstrate effectiveness and rapidly response the out information, and ensure the grid operation to be safely and