Black-start coordination control strategy of wind-storage combined system considering restoration capability of storage power stations
The joint participation of energy storage stations and wind farms in the black start of a system can reduce load outage time and accelerate system recovery.This paper focuses on a large energy storage power station and wind farm combined power generation system and pro-poses a coordinated control strategy for black start considering the restoration capability of energy storage power stations.The wind farm employs a maximum power tracking control method,while the energy storage power station adopts the V/f control method to jointly form a black start power source.Soft energization is employed for the energy storage power station and critical load restoration are performed before the wind turbines are connected to enhance the stability of restored system.An estimation method for the recovery amount of load is introduced,considering the recovery capability of energy storage stations.Based on the auxiliary load demand of the thermal power plant and wind power prediction,the state of charge of the energy storage power station during the black start process is predicted.Then,considering the power and state of charge constraints of the energy storage power station,the amount of critical load to be restored is determined.Transient simulations are carried out in PSCAD/EMTDC to verify the effectiveness of the proposed strategy.
black startwind-storage combined power generation systemload restorationsoft energization
万方数据
维普
