To verify the high and low voltage ride-through capability of photovoltaic power stations and obtain their accurate model control parameters, this paper proposes a multi-strategy improved model identification method for photovoltaic power plants based on the measured data of high and low voltage ride-through tests and considering the characteristics of the whole process of fault ride-through. This method is applied to the grid-connected performance test of a photovoltaic power station in Guizhou to verify the high and low voltage ride-through ability of the power station under different working conditions and obtain its accurate control parameters. The results show that the proposed parameter identification method can accurately identify the key parameters of high and low voltage ride-through of the system under different working conditions, and the errors of simulation and measured data meet the technical requirements of relevant standards, which can be used for practical engineering calculations.