Research on Islanding Detection Method in Microgrid

In photovoltaic grid-connected power generation, islanding effect is one of the common faults. It not only endangers the power system, but also endangers the safety of workers. So how to detect islanding phenomenon is particularly important. This paper analyses the principle of four kinds of islanding detection and compares their advantages and disadvantages. The future research direction is to further improve its detection efficiency and reduce the degree of pollution to the power grid. In practical application, it will be the trend of islanding detection to choose appropriate detection methods to cooperate with each other.