并网光伏发电系统的孤岛检测  

Islanding Detection of Grid Connected Photovoltaic Power System

作　　者：田兴华[1] 李良光[1] 

机构地区：[1]安徽理工大学电气与信息工程学院,安徽淮南232001

出　　处：《现代建筑电气》2015年第12期45-48,53,共5页Modern Architecture Electric

摘　　要：为了在并网光伏发电系统中能及时、有效地检测孤岛效应,提出了q轴电流扰动法。一旦有孤岛产生,能使频率迅速脱离检测盲区,直到触发孤岛保护。仿真结果表明,q轴电流扰动法检测时间小于2s,几乎对电能质量没有影响,证明了该方法的可行性。This paper proposed an islanding detection method based on the q-axis current disturbance to effectively and timely detect the islanding problems in connected photovohaic system. The q-axis current disturbance method makes the frequency rapidly from the non detection zone when there is an island, until landing protection. The simulation results show that the detection time of q-axis current disturbance method is less than 2 s ,which has no effect on power quality. It proves the feasibility of this method.

关 键 词：并网光伏发电系统 孤岛检测 q轴电流扰动法 检测盲区 

分 类 号：TM615[电气工程—电力系统及自动化]