楼宇综合能源系统容量配置优化

Study on Optimal Capacity Planning of Building Integrated Energy System

冷热电三联供系统在满足用户多种负荷需求的同时梯级利用能源,系统能源利用效率高。随着可再生能源技术的迅速发展,集成多种可再生能源的综合能源系统受到广泛的关注。由于不同地区、不同建筑类型的多能源负荷需求差异较大,文章基于负荷模拟获得典型建筑冷热电负荷需求,分析不同气候区域不同建筑类型的热电比、冷电比等负荷需求特征。将能源的利用过程归为生产、回收、转换和储存四环节,基于能量平衡原则建立包含四环节的综合能源系统的混合整数非线性规划模型,从而获得影响综合能源系统和三联供系统经济性的重要因素,研究综合能源系统、三联供系统配置在不同地区和建筑的适用特点,结果体现出不同地区、建筑类型综合能源系统配置的差异性。

The efficiency of combined cooling heating and power ( CCHP) is high on account of cascading energy utilization to meet the multiple load requirements.With the rapid development of renewable energy technology,integrated energy system incorporating with various renewable energies has been widely concerned.The multi-energy demands of different building types vary greatly in different regions.This paper obtains the typical building cooling,heating and power demands on the basis of the simulation of multi-energy demands,and analyzes the energy demand characteristics,which include the heat-power ratio and cooling-power ratio in different building types.Moreover,this paper deduces energy production,recycle,conversion and storage segments from energy utilization process.A mixed integer nonlinear programming model ( MINLP) is built for above four segments in integrated energy system on the basis of the energy balance principle.The factors which have prominent influences on integrated energy system are identified.Simulation results show that the optimal configurations of integrated energy system and CCHP equipment,obtained by the proposed method,change with different locations and types of buildings.