Abstract: Combined heat and power （CHP） units operates at the "ordering power by heat" mode， which causes the insufficient of the peak shaving capacity and restricts the wind power integration， breaking the rigid coupling of electric power generation and heat supply is the key to alleviate the problem of wind power curtailment. Aiming to solve the problems， this paper adopts virtual power plant model combined CHP units and other distributed energy as a whole to participate in the grid operation， the fixed load curve is converted into an demand interval by fully considering the customers comfort level. It can flexibly adjust the output of the CHP unit while satisfying the customers comfort level and effectively reduce wind curtailment. In addition， using multi-scenario method to deal with wind power output uncertainty， a stochastic programming model with the goal of maximizing the profit of the VPP is established， which can realize coordinated scheduling optimization of heat and electric power. Finally， an example is given to verify the validity and rationality of the constructed model. The results show that considering user comfort can effectively promote wind power consumption and improve the economic efficiency of virtual power plants.

Key words: virtual power plant, combined heat and power （CHP）, comfort level, wind power consumption