A grid-connected inverter control method fitting for grid-connected dynamic analysis is proposed. This paper takes the maximum power output of the photovoltaic array and power factor specified by network dispatching as reference values of control variables and adopts control strategy of dynamic feedback linearization to realize decoupling control of active and reactive power. The cascade PI regulation is proposed to avoid static control error caused by inaccurate parameter estimation. The simplified power system of large-scale photovoltaic station is modeled and simulated, and the control validity of the inverter is verified considering power factor, solar radiation strength, bus fault, etc. Research results demonstrate that the parameter adjustment of PI controller is easy to realize, static error of the traditional method is also eliminated, dynamic response speed of the control method is fast and the stability is good.