Adaptive Relay Protection Method of Power Distribution Network with Distributed Power Supply
The conventional relay protection method for distribution network with distributed power supply is limited to a small protection area and has a small application range.Therefore,this paper proposes an adaptive relay protection method for distribution network with distributed power supply.According to the distribution network structure,the protection time is calculated and the inverse time coefficient is determined to solve the setting value.Combined with relay operation data,a predictive model protection action is constructed,and the likelihood function is introduced to determine the fault type,and a targeted relay protection strategy is put forward.The application results of an example show that the proposed method can effectively expand the relay protection area and the application effect is good.
distributed power supplyelectric power systemrelay protectionprotection strategy
NETL
NSTL
万方数据
