The inverter in photovoltaic power station can supply reactive power.But considering that power station can provide a definite storage reactive power

the reactive power compensation equipment must be settled.The capacity of reactive power compensation for a photovoltaic power plant is determined by its connection condition to the power network.The arranged capacity of capacitive reactive power compensation is the sum of reactive power loss of step-up transformer

reactive power loss of lines and charging power of lines at rated output of photovoltaic power station.The arranged inductive reactive power compensation capacity shall be able to compensate charging reactive power of all power lines.For the problem of the reactive power compensation capacity arrangement of photovoltaic power station

the calculation process of reactive power compensation capacity is given by taking an engineering example of a grid-connected photovoltaic power station.The model is set up by the use of PSD-BPA flow software and the correctness of calculation is verified.