Research on Tuning Protection with Distributed Power Distribution Grid

Along with the gradually lack of the fossil fuels, people pay more and more attention to the use of renewable energy. Distributed power supply of a large number of interconnection affects the distribution network power flow direction and size a lot. Thus, the protection setting values of the distribution network line are not accurate, which lead to the refusing action or misoperation. This article uses compensating coefficient based on the consideration of adaptive protection algorithm of distribution network protection value setting, and operate simulation. The simulation results show that this algorithm of adaptive protection is good with different distributed power grid capacity and right protection setting values.