Short-circuit current-limiting scheme with fast switch fault current limiter on 750kv autotransformer

Abstract

This paper proposes different short-circuit current limiting schemes using FSFCL on autotransformers, derives the equivalent models of installing the fast switch fault current limiter at different positions of autotransformers, and simulates the current limiting effect of each scheme using PSASP. The simulation results show that the fast switch fault current limiter on the side near the neutral point of the common winding of the autotransformer is the optimal scheme for comprehensive parameters.