考虑采暖建筑用户热负荷弹性与分时电价需求侧响应 协同的电热联合系统优化调度

电热联合系统中电、热负荷在峰谷分布上存在互补特性，考虑电、热负荷的互补特性实施电热联合系统优化运行可以有效增强系统调峰灵活性，缓解电热强耦合造成的弃风。为此，研究了考虑采暖建筑用户热负荷弹性与分时电价需求侧响应协同的电热联合系统优化调度问题。阐述了电、热负荷协同促进风电消纳的机理。根据电、热负荷特性分别建立采暖建筑用户热负荷弹性模型以及分时电价需求侧响应模型，并以此为基础建立电、热负荷协同响应模型。将负荷模型纳入调度模型，构建考虑负荷协同优化的电热联合系统日前调度模型。算例分析表明，采暖建筑用户热负荷弹性与分时电价需求侧响应的协同可有效提升系统运行经济性并促进系统风电消纳。

Optimized combined heat and power dispatch considering the coordination of heat load elasticity and time-of-use demand response

Electrical and heat loads have complementary characteristics in the peak-valley distribution in combined heat and power systems. In optimal dispatch, these complementary characteristics can effectively enhance the peak load regulation and alleviate the wind power curtailment caused by the strong coupling in electricity and heat. Therefore, this paper studies the optimal dispatch of a combined heat and power system considering the coordination of heat load elasticity of heating buildings and the time-of-use electrical demand response. The synergistic promotion mechanism of wind power integration by electrical and heat loads is expounded. From the characteristics of heat and power loads, the heat elastic load model of heating building and the model of time-of-use demand response are established respectively. Then, the coordinated response model of the heat and power loads is established. Incorporating the multi-energy loads model, a day-ahead dispatch model of the combined heat and power system considering the coordination of loads is constructed. The analysis of the example shows that the coordination of heat load elasticity of heating building and time-of-use demand response can effectively improve the operational economy of the system and promote wind power accommodation. This work is supported by the National Key Research and Development Program of China (No. 2017YFB0902100).