The invention provides a wind power plant power grid operation simulator. The wind power plant power grid operation simulator comprises a step-down transformer, a power grid disturbance simulation generating device and a power grid fault simulation generating device. One end of the step-down transformer is connected with a medium-high voltage power grid, and the other end of the step-down transformer is connected with the input end of the power grid disturbance simulation generating device. The output end of the power grid disturbance simulation generating device is connected with the input end of the power grid fault simulation generating device, and the output end of the power grid fault simulation generating device is connected with the medium-high voltage power grid. A breaker is connected between the input end and the output end of the power grid disturbance simulation generating device in parallel. The wind power plant power grid operation simulator can achieve online hybrid simulation of power grid disturbance and faults, collect and analyze actual operation data during a test on a wind turbine generator, perform a power grid adaptability test, a low voltage ride through capacity test and a high voltage ride through capacity test and detection on the wind turbine generator and perform comprehensive tests and evaluation on the power grid disturbance anti-interference capacity and the power grid fault ride through capacity of the wind turbine generator.