摘要
随着分布式发电的迅速发展,越来越多的可再生能源通过并网逆变器输送到电网。在电网发生故障时,及时准确地检测出孤岛效应,具有非常重要的意义。这里采用带正反馈的频率偏移法(AFDPF)检测孤岛效应的发生,并且对该方法的检测盲区进行了描述。最后给出了实验结果和对盲区的分析,结果表明,带正反馈的频率偏移法能有效检测出孤岛的发生。
Due to the development of distributed generation, grid-connected converter is widely employed for renewable energy sources utilization.Anti-islanding is the key problem for grid-connected power generation system.This paper proposes the active frequency drift method with positive feedback （AFDPF）.This method can reduce the non-detection zone.The experimental results verify the good performance of the proposed method for islanding prevention.
出处
《电力电子技术》
CSCD
北大核心
2011年第10期27-28,59,共3页
Power Electronics
关键词
并网逆变器
孤岛检测
频率偏移
盲区
grid connected inverter
islanding detection
frequency drift
non-detection zone
