In order to solve the problem that the traditional detection method can not take into account the detection efficiency and power quality,a new type of island detection method was proposed in this paper,which is based on the control of current inner loop.By comparing the network voltage simulation waveform of the traditional current inner loop control with the network voltage simulation waveform of the proposed isolated island detection method,the improved detection method can change the detection time by adjusting the gain to improve the detection efficiency,and it does not affect the power quality of the power grid in normal operation.%为解决传统检测方法不能兼顾检测效率与电能质量的问题,在电流内环控制的基础上,提出了一种新型的孤岛检测方法.通过比较传统电流内环控制与所提孤岛检测方法的并网点电压仿真波形及试验验证可以发现,在电网脱网时改进的检测方法可通过调节增益来改变检测时间,从而改善孤岛检测效率.
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