Research and Improvement of Electromechanical Transient Performance of Power System Based on SIMULINK

The research on electromechanical transient stability of power systems is great significance. Analyzing the parameters simulation system and its improved with typical short-circuit faults, this paper studies improvement. Firstly, based SIMULINK MATLAB, a double-loop single-machine-infinite-bus built. experiments under circumstances three-phase short circuit single-phase grounding faults are then carried out to analyze such as limit cutting time voltage. Besides, explores how controllable series capacitor compensation device reducing mechanical output by prime mover improve system. Experiments show that after fault conditions where removed before critical clearing time, which can increase threshold gain more response for relay protection devices. Thus, value researching improving proved.