寒冷地区公共机构建筑多能源系统优化模型研究

Study on Optimization Model of Hybrid Energy System for Public Buildings in Cold Regions

构建公共机构建筑多能源系统,有利于推动公共机构建筑节能和绿色建筑发展。本文针对寒冷地区公共机构建筑冷、热和电3种负荷建立典型具体的多能源系统,并对该系统中的各项设备进行相应的数学建模。基于综合评价指标,提出夏季和冬季工况下该多能源系统的运行方案。研究结果表明:当分别选用经济指标最优、环境指标最优、节能指标最优和3E(能效、经济和环境)综合评价指标最优作为多能源系统案例的优化策略时,其综合评价指标值在夏季工况分别为0.86、0.95、0.72和0.96,在冬季工况分别为0.55、0.89、0.58和0.91。基于综合评价指标最优的运行方案有效兼顾了系统运行的经济性、环保性以及节能性,满足复杂系统全方位需求。

A hybrid energy system for public buildings is contributed to promote the energy-saving and green-building development of public buildings. A typical concrete hybrid energy system is established for the cold, hot and electric loads of public buildings in cold regions, and the corresponding mathematical model of the equipment in the system is developed in this paper. Based on the comprehensive evaluation indicators, the operating plans of the hybrid energy system under the summer and winter conditions are proposed. The research results show that, when the economic indicators, the environmental indicators, the energy-saving indicators, and the 3E(energy, economy, and environment) comprehensive evaluation indicators are optimal as the optimization strategy for the multi-energy system case;the comprehensive evaluation index values are 0.86, 0.95, 0.72 and 0.96 in summer condition, and they are 0.55, 0.89, 0.58 and 0.91 in winter condition. Therefore, the economic, environmental and energy-saving performance is effectively balanced by the optimal operation plan based on comprehensive evaluation indicators, which satisfies the comprehensive needs of complex systems.