Modified Islanding Detection Method for Grid-Connected PV Systems

摘要：

There is significant negative impact due to an unintended islanding supported in DG systems，resulting in developing passive and active methods to detect islands. Many active techniques have been proposed and AFD method is classical. However，the method has large non-detection zone and the chopping fraction may extend the run-on time and fail to detect islanding operation. The improved method proposed in this paper monitors the frequency tendency first and then decides the suitable chopping fraction，ensuring fast and effective antiislanding operation. The standard of the method based on IEEE Std. 929-2000 fits the power condition of China. The simulation results show that the proposed algorithm is capable of detecting the islanding condition correctly，with smaller non-detection zone and less harmonics.

关键词： Active Method Chopping Fraction Grid-Connected PV Systems Islanding Photovoltaic

作者: Yuan Ling Zhang Xian-fei Zheng Jian-yong Gao Ming

作者单位: Electrical Engineering School Southeast University Nanjing Jiangsu Province 210096 China Nanjing Automation Research Institute Nanjing Jiangsu Province 210061 China

会议类型: 国内会议

会议名称: 中国高等学校电力系统及其自动化专业第二十三届学术年会

会议地点: 合肥

会议语种:英文

在线出版日期: 2007-10-01（万方平台首次上网日期，不代表论文的发表时间）