Design of a fast transient stability control scheme in power system

This paper describes the optimization of the settings for various emergency controls in an electrical power system, which is done by PSASP Lab of CEPRI. The aim is to regain a state of operating equilibrium when the power system is subjected to disturbances. Generator tripping with necessary load shedding is adopted as the main stabilizing control actions. A hybrid particle swarm approach is proposed to investigate the optimal combination of diversiform controls actuated after an event to maintain or restore the stability. In this way, the number of tripped generator units and shed loads can be minimized while stable operation can be maintained under extreme contingencies. Tests on the IEEE-39 New England power system and a large-scale practical Chinese utility, Southern Power Grid of China, are performed in the paper. The results indicate the feasibility of the proposed strategy