【摘要】 分析了光伏并网发电系统中出现的孤岛问题。针对现有孤岛检测方法中的检测盲点,提出了一种基于无功补偿技术进行孤岛检测的方法。分析结果表明,该方法具有检测无盲点、响应速度快,以及对发电系统有功输出无影响的特点,并用Matlab/Simulink对其进行了建模仿真研究。仿真结果验证了检测方法的正确性。更多还原

【Abstract】 The islanding problem in grid-connected photoltaics system and the traditional detecting methods were studied.There was non-detecting zone problem in the conventional methods of the islanding detecting.A new method using reactive power compensation was proposed.This method had the advantages of no non-detecting zone,high response speed and no influence on the output active power of the system.The simulation results by Matlab/ Simulink showed the method was effective.更多还原