Design and analysis of relay protection system for AC DC hybrid system

Abstract

With the national new energy policy, AC DC integrated distribution network is more and more common, in the AC DC hybrid grid, the interaction between AC and DC side will lead to complicated fault characteristics, which further affect the relay protection system strategy, with typical system as the object of the AC DC relay protection strategy, fault characteristics aimed at different short dot simulation study are done, and verify the correctness and feasibility of the system configuration.