实现孤岛检测,在单逆变器或者多逆变器并网运行时，由于故障情况导致的逆变器与主网分离，而产生的不正常现象，可以采用孤岛检测方法实现孤岛检测。(For detecting an island, in a single inverter, or inverter parallel operation, caused by the fault condition of inverter and provids separation, produce abnormal phenomenon, an is