High Reliability Relay Protection Setting Scheme of Distribution Network

Aiming at the complex situation of multi-branch and multi-distributed power supply in distribution network, a high reliability relay protection setting scheme, including protection configuration, setting method and protection cooperation, is proposed in order to improve its action selectivity and power supply reliability. With the goal of protecting distribution network equipment and improving selectivity, the setting method is simplified with the grid structure as the guide. The corresponding protection coordination method is proposed. The simulation results show that the fixed value setting scheme proposed in this paper can improve the rapidity, selectivity and reliability of distribution network protection, simplify the fixed value setting process, and has wide applicability and high application value.