基于并网光伏发电系统的反孤岛研究

Anti-Islanding Research Based on Photovoltaic Grid-Connected Generation System

太阳能光伏并网发电是一种绿色环保的电能,在市场中的应用也越来越多。然而在快速发展的过程中出现了孤岛故障这个较为普遍的问题,及时有效地检测出孤岛故障显得越来越重要。该文提出的正反馈主动式频率偏移法能够及时地检测孤岛故障。为了验证这一结果,用Matlab/simulink对该方法进行了仿真。从仿真结果中可以看到,此方法确实能够及时有效地检测出这一现象,而且缩短了故障检测时间。

Solar photovoltaic grid generation is a kind of green energy and it is more and more used in the market However,in the process of its development the island fault as a common problem has discovered, how to detect the fault effectively is more and more important.The positive feedback active frequency drift is put forward in this paper can detect island failure timely,in order to verify the results,we use Matlab/simulink to simulat this method,you can see from the simulation results,this method can detect the phenomenon ef-fectively,and shorten the fault detection time.