Coordinated Control Strategy Research for Large-scale Doubly-fed Variable Speed Pumped Storage Units
Addressing the issue of the scarcity of research on control strategies for governors in large variable-speed generator units and the specific coordinated control between the AC excitation side and the governor,this paper studies the speed control,power control,and servomotor stroke control modes of the governor,as well as the speed control and power control modes of the AC excitation system for doubly-fed variable speed pumped storage units.Several feasible unit coordination control strategies are proposed based on the different control modes under various operating conditions.A doubly-fed variable speed pumped storage unit model is built using Matlab/Simulink software,and the proposed control strategies are analyzed.For the generating condition,it is appropriate to use the AC excitation system to control the pow-er and the governor to control the speed;for the pumping condition,it is suitable to use the AC excitation system to con-trol the power and the governor to control the servomotor stroke.
doubly-fed variable speed pumped storage unitunit controlhydraulic turbine regulationexcitation control
万方数据
维普
