The invention provides an operation simulation method and device with wind electricity and a pumped storage power station united to bear system base loads. The wind abandoning electric power of a wind power station is restrained and determined according to the upper-limit limitation when the wind electricity is connected into a power grid, next, the pumped storage power station is arranged to utilize the wind abandoning electric power in the wind abandoning period of the wind electricity to pump water, then, pumped storage is arranged to generate power when the wind electricity does not exceeds the limit, wind and storage are optimized to contribute jointly, finally, a load curve is corrected according to the contribution of the wind-and-storage-united power station to obtain a net-load curve, and then a unit in an electrical power system is simulated according to the net-load curve. The scheme is favorable for analyzing the influences on economy of the electrical power system overall operating technology under the condition that the wind and the storage are united, the achieving method is easy, calculating speed is high, and engineering application is facilitated.