带正反馈的有源频率偏移孤岛检测及盲区讨论  

Analysis of the Active Frequency Drift Method with Positive Feedback of Islanding Prevention

作　　者：廖政伟[1] 廖晖[1] 吕征宇[1] 

机构地区：[1]浙江大学,浙江杭州310027

出　　处：《电力电子技术》2011年第10期27-28,59,共3页Power Electronics

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.

关 键 词：并网逆变器 孤岛检测 频率偏移 盲区 

分 类 号：TM464[电气工程—电器]