Due to the volatility and intermittently of photovoltaic(PV)power generation

the total load of power grid becomes variable and random.Therefore

based on the structure of PV power plants and the principles of active control system

the author proposes an optimized distribution strategy on active power.This strategy will assign the power to each solar inverter

and can accurately track the setting value.The simulation results show that

under this control strategy

the output active power of the PV plant can accurately track the setting value while the setting value is less than the predicted value.The PV plant will work at the maximum power point tracking(MPPT)status while the setting value is larger than the predicated value.This strategy can avoid the frequent start and stop

balance the operation time and prolong the service life of the photovoltaic inverter.