Research on Cascading Failure Search Method of High Proportion New Energy Power System Based on Branch Influence Factor

Reviewing the blackouts in recent years, it is found that almost all blackouts are caused by a series of complex fault chain reactions caused by unexpected small-probability faults, resulting in the destruction of the stability of the power grid. Building a systematic and scientific cascading failure risk assessment system and providing efficient and accurate fault cascading evolution path search methods have become important means to prevent, control and even block blackouts caused by cascading failures. Aiming at the cascading failure problem dominated by power flow, a cascading failure search method of high proportion new energy power system based on branch influence factor is proposed in this paper. The effectiveness of the proposed cascading failure search method is verified based on the modified IEEE 39-bus power system.