Abstract：Anti-islanding protection is a mandatory feature for grid-connected inverters. A desired method not only can detect islanding within acceptable duration, but also have less adverse impact on power quality. This paper analyzes the traditional phase-shift method for anti-islanding and proposes a new scheme which is easy to be implemented and has less adverse impact on power quality. The paper analyzes the deviation tendency of frequency in islanding and non detection zone (NDZ) of the scheme. Based on it a criterion for qualified anti-islanding is proposed, which helps to achieve grid-connected PV systems that meet the requirement of National Code.
刘芙蓉, 康勇, 王辉, 段善旭, 唐爱红. 主动移相式孤岛检测的一种改进的算法[J]. 电工技术学报, 2010, 25(3): 172-176.
Liu Furong, Kang Yong, Wang Hui, Duan Shanxu, Tang Aihong. An Improved Active Phase-Shift Method for Islanding Detection. Transactions of China Electrotechnical Society, 2010, 25(3): 172-176.
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