As a new type of power electronic equipment,static synchronous compensator with battery energy storage system(STATCOM/BESS)can not only participate in system frequency regulation,but also provide dynamic reactive power voltage support.Firstly,the circuit structure and working principle of the grid-forming STATCOM/BESS(GFM-S/B)are introduced.The transient control strategy based on virtual synchronous control and transient control strategy under short circuit fault are designed.In case of fault,the equipment can be switched to a current limiting mode to provide reactive power support for the system as much as possible on the premise of ensuring safety of the equipment.The GFM-S/B connection system is set up and disturbed characteristics of the system are analyzed under PSCAD/EMTDC platform.The simulation results show that GFM-S/B can play a role in reactive power compensation in the case of voltage fluctuation and can enhance the elastic support ability of power grid.
关键词
构网型控制/静止同步补偿器/虚拟同步控制/控制策略/受扰特性/电压支撑
Key words
grid-forming control/STATCOM/virtual synchronization control/control strategy/disturbed characteristics/voltage support
维普
万方数据