含混合储能的冷热电联供系统运行策略及容量配置

Operation Strategy and Capacity Configuration of Combined Cooling Heating and Power System with Mixed Storage Energy

冷热电联供系统是分布式能源未来主要发展方向和形式。建立了含混合储能的冷热电联供系统多目标优化模型,考虑设备初始投资成本和维护成本,分析在“以电定热”和“以热定电”不同运行策略下混合储能初始容量及总容量配置对系统能源性、经济性、环境性评估指标的影响,得出储能容量最优配置及系统运行策略,并与不含储能系统对比验证。通过算例验证表明,合理的储能容量配置及运行策略选择有助于提高系统能源利用率,减少二氧化碳排放和运行成本,为冷热电联供系统规划运行提供一定的理论和技术参考。

comb ined cooling heating and power(CCHP)system is the main direction and form of energy distribution in future development.A multi-objective optimization model of CCHP system with hybrid energy storage was established.The model included multiple factors,such as the costs of the initial investment and equipment maintenance,the impact of initial capacity,and the total capacity allocation of hybrid energy storage onto the energy,economy and environmental evaluation indexes of the system in heat-or electricity-priority strategy.The optimal allocation of energy storage capacity and system operation strategy were obtained and compared with those without energy storage.Validation in real case show that reasonable allocation of energy storage capacity and selection of operation strategy improved energy utilization,and reduced carbon dioxide emissions and operation costs.The results provide a theoretical and technical reference for the planning and operation of CCHP system.