基于需求侧响应的分布式冷热电联供系统能量管理策略

分布式冷热电联供系统(distributed combined cooling,heating and power system,DCCHP)因其高效的能源利用率成为区域综合能源系统的有效实现形式,同时随着需求侧响应(demand response,DR)技术的发展,通过管控用户用能行为来提高能源系统性能成为目前研究的热点。基于此,文章建立了区域能量管理系统(regional energy management system,REM S)并提出了一种基于DR的DCCHP能量管理策略。在用户侧,对系统负荷进行分类并建立考虑用户满意度反馈及动态费用补偿的DR控制模型。REMS用能方式管控子系统,针对冷热电负荷各自的特点及组成,以DR补偿费用及负荷峰谷差最小为目标优化初始负荷曲线形态。在供能侧,将优化后的负荷数据输入REMS设备出力调度子系统,以DCCHP综合成本最小为目标经济管控系统设备出力。算例仿真结果证明所提策略可有效提高系统能源利用率、降低成本,实现供需双侧的共同优化。

Energy Management Strategy of DCCHP Based on Demand Response

Distributed combined cooling,heating and power system (DCCHP) has proved to be an effective form of regional comprehensive energy system because of its high energy efficiency.Meanwhile,with the development of demand response (DR) technology,it has become a hot topic to improve the performance of energy system by controlling user's behavior.This paper establishes the regional energy management system (REMS) and proposes an energy management strategy of DCCHP based on DR.At user side,the system loads are classified and the DR control model is established with considering user satisfaction and dynamic compensation cost.According to the characteristics and composition of cold,heat and power load,the REMS subsystem of energy management and control takes the minimum DR compensation cost and load peak to valley difference as the objective to optimize the initial load curve shape.At energy supply side,the optimized load data is input to the DCCHP equipment output scheduling subsystem,and the equipment outputs are controlled by the object of minimum total cost of DCCHP.The simulation results show that the proposed strategy can effectively improve the energy efficiency,reduce the cost of the system,and realize the optimization of both sides of supply and demand.