摘要
分析了电压相位突变、频率变化率和主动投切电容回路3种微电网孤岛检测方法的原理及特性,在此基础上给出了一种以被动检测为主,主动检测为辅的组合决策孤岛检测法,仿真结果表明,该方法可消除单一孤岛检测法存在的检测盲区,在不同的微网运行状态和不同负荷构成情况下均可实现孤岛检测。
The principles and properties of the three islanding detection methods, including abrupt voltage phase change, frequency change rate and capacitor initiative switch are analyzed. Then a combined decision islanding detection method is presented with passive detection as the main part and active detection as the auxiliary part. Simulation results show that the comprehensive method can eliminate the dead detection zone of single islanding detection method and realize islanding detection in different microgrid running state and load cases.
出处
《江苏电机工程》
2012年第3期24-26,30,共4页
Jiangsu Electrical Engineering
关键词
微电网
孤岛检测
相位突变
频率变化率
主动投切电容
组合决策
microgrid
islanding detection
abrupt phase change
frequency change rate
capacitor initiative switch
combineddecision
