The invention relates to a wind power plant high voltage ride-through capability simulation test method and device. The method comprises the steps of adjusting three-phase symmetric fault voltage or two-phase asymmetric fault voltage of a wind power plant grid-connected point in a wind power plant simulation system to simulate a fault scene of the wind power plant grid-connected point, acquiring electrical data of a generator end bus of a wind turbine generator and electrical data of the wind power plant grid-connected point in each fault scene of the wind power plant grid-connected point, anddetermining the high voltage ride-through capability of the wind power plant in each fault scene of the wind power plant grid-connected point according to the electrical data of the generator end busof the wind turbine generator in each fault scene of the wind power plant grid-connected point and the electrical data of the wind power plant grid-connected point. According to the wind power planthigh voltage ride-through capability simulation test method and device, an effective technical means is provided for judging whether the wind power plant has high voltage ride-through capability or not, the power grid operation safety after large-scale wind power in a DC near area is connected into a system can be guaranteed, and the wind power sending-out capability of an extra-high-voltage DC system is improved.