Study on the safety index of distribution system containing distributed generation and example analysis

In this paper, the safety index of distribution system containing distributed generation is discussed, Based on the research of the power distribution system. According to the practical situation, distribution system containing distributed generation such as the wind power generation unit is considered as a random power, and introduced the concept of “Island formation probability”. Research and analysis of the safety evaluation index of the distribution systems containing distributed generation, from the two aspects of system failure probability and failure consequence. And through the actual example verifies that this set of safety evaluation index of practicality. The set of indicators to characterize the security level of grid connected wind power system for different regions of the network or the same area of the different planning schemes, all has important guiding significance.