A Fault Ride-Through Control Scheme for Active Power Cooperative Support of New Energy Base

The new energy base (NEB) contains tens of million kilowatts, and 70% of the capacity is made up of new energy, which is far more than normal new energy generation system. When a fault occurs, the voltage drops of NEB may cause unacceptable active power shortage in the whole power system and lead to grid frequency collapse. Existing fault ride-through (FRT) schemes are aimed at voltage support and ignore the active power. To overcome this problem, characteristic of the NEB aggregate model is analyzed for active power support in this article. Then, an FRT of the NEB scheme is proposed for active power cooperative support (APCS). Compared with existing FRT scheme, active power shortage of the NEB is minimized by proposed scheme. Effectiveness of the proposed scheme is proved by simulation results.