Fault Identification and Reclosing Technology for DG Access to Distribution Network

The scale of the new energy power supply brings many new problems and challenges to the traditional protection based on the local quantity and automatic reclosing technology. Aiming at this question, firstly, this paper analyzes the influence of new energy units’ access to power distribution automatic reclosing device. Based on this, an automatic reclosing control method based on multi-source regional information is proposed. Firstly, the fault tripping matrix is obtained through the network topology association matrix and fault information matrix, and then the strategy of acceleration trip can be accelerated after determination. Finally, the superposition matrix is overlapped according to the latter acceleration. At last, through digital simulation, the correctness of principle of the proposed method is verified.