电力系统自动化2012，Vol.36Issue(14)：200-204,209,6.
改进的主动频率偏移孤岛检测算法
Improved Active Frequency Drift Anti-islanding Algorithm
摘要
Abstract
Since passive islanding detection methods have non-detection zone and traditional active frequency drift （AFD） methods may cause active current fluctuation, an improved AFD islanding detection algorithm is proposed. The algorithm realizes current frequency drift by controlling reactive current, so as to achieve positive feedback of voltage frequency at the point of common coupling （PCC） in islanding state and realize anti-islanding function. To reduce reactive current injection to the power system, the improved AFD algorithm should be combined with traditional passive islanding detection algorithm. Simulation and experiment results show that the improved algorithm can not only eliminate the non-detection zone of passive islanding detection algorithms when the loads power and the inverter power match, but also overcome the active current fluctuation of traditional AFD algorithms and improve the stability of DC bus voltage.关键词
光伏系统/主动频率偏移/孤岛检测/检测盲区/无功电流Key words
photovoltaic system/active frequency drift (AFD)/islanding detection/non-detection zone/reactive current分类
交通工程引用本文复制引用
张学广,王瑞,刘鑫龙,徐殿国..改进的主动频率偏移孤岛检测算法[J].电力系统自动化,2012,36(14):200-204,209,6.基金项目
国家自然科学基金资助项目 （）
哈尔滨工业大学科研创新基金资助项目（HIT.NSRIF2010104）~~ （）
