In order to solve the two major problems in the new energy power generation process，namely，the difficultly in dynamic energy balance and high system operation costs，an operation mode of energy storage system based on the commercial virtual power plant（VPP）is put forward by referring to a demonstration project with wind power plants and energy storage systems.On the basis of the adoption of the objective function of VPP economic benefits and that of the benefits and costs of wind power plant and battery energy storage systems，an economical dispatching model for VPP able to provide services to peak load shifting and frequency control，is developed.With the goal of maximizing the profits in each period，the output power of wind power plants and battery energy storage systems is obtained by the simulated annealing algorithm.By referring to the data of electricity price of typical areas in China and the cost of typical battery energy storage system in operation，an example is presented to show that the adoption of the VPP operation mode proposed is able to yield greater benefits.