Two Stage Optimization Model Considering Demand Response Dispatch Value of Thermoelectric Load

Abstract

Integrated energy system has the ability of flexible regulation, which can effectively improve the utilization of primary energy and promote the consumption of renewable energy. In this paper, an integrated energy system composed of CHP, heat pump, wind power and thermoelectric flexible load is studied. In order to make full use of the dispatching value of thermoelectric flexible load in integrated energy system, a thermoelectric flexible load model was established to participate in demand response in integrated energy system. By fully considering the different regulating characteristics between the heat demand response and the electric demand response, the price type electric demand response is included in the day ahead dispatching model, and the target of this model is the minimum cost of system operation. The incentive heat demand response is adjusted to the intraday dispatching model, and the deviation assessment cost is taken as the objective, thus a two-stage optimization model of integrated energy system is established. The simulation results show that the proposed model can give full play to the dispatching value of different demand responses, improve the system flexibility, effectively reduce wind curtailment, power purchase and the fluctuation of wind power. Thus, the overall efficiency of the integrated energy system is improved. This model also promotes environmental protection and improves economic operation of the integrated energy system, and can provide reference for the optimization of the integrated energy system.