Optimal Dispatch of Combined Heat and Power System Considering Adequacy Resources on Demand Side

Abstract

In order to improve the flexibility of the power system, alleviate the problem of wind power curtailment in the heating season in North China, Northeast China and Northwest China, and realize the coordinated operation of the demand side and supply side resources, this paper proposes that the demand side resources include the flexible heat load considering the users’ thermal comfort, the peak-valley time-of-use electricity price demand response, and the orderly charge and discharge of electric vehicles into the power grid. On this basis, the green economic dispatching model of combined heat and power system is established. Then, the Benders decomposition method is used to realize the decomposition and iterative of the thermoelectric system in the outer layer, and the improved particle swarm optimization algorithm is nested in the inner layer for optimizing the solution. Example analysis were given to show that the proposed strategy and model can effectively reduce the total cost of system power supply and improve the accommodation of wind power.