考虑生物质供给价格弹性的工业园区综合能源系统规划

针对以生物质联供机组为核心的综合能源系统(integrated energy system,IES)在实际运行过程中存在的生物质燃料收集困难、供应不稳定等问题,文章提出了一种考虑生物质供给价格弹性的综合能源系统规划方法。首先,基于生物质收购价格弹性理论建立了秸秆收集成本模型,并将其引入工业园区综合能源系统双层规划中。其次,上层模型以设备规划容量及秸秆收购价格为优化变量,以年化综合费用最小为优化目标;下层模型以设备逐时出力及秸秆消耗量为优化变量,以考虑价格弹性的秸秆收集成本在内的年运行成本最小为优化目标,并采用粒子群算法和CPLEX工具箱进行联合求解。最后,以吉林省某典型工业园区为算例验证了所提规划方法更贴合工程实际情况,具有更加优越的经济性。

Integrated Energy System Planning Method for Industrial Parks Considering the Price Elasticity of Biomass Supply

Because of the difficulties of biomass fuel collection and unstable supply in the actual operation of the integrated energy system (IES) centered on biomass cogeneration units, this paper proposes an IES planning method that considers the price elasticity of biomass supply. Firstly, according to the biomass purchase price elasticity theory, a straw collection cost model is established and introduced into the two-level planning of the industrial park IES. Secondly, the upper-level model uses equipment planning capacity and straw purchase price as optimization variables to pursue the minimum annualized comprehensive cost; the lower-level model uses equipment hourly output and straw consumption as optimization variables to pursue the minimum annual operating cost that takes into account the price flexibility of straw collection costs, and the particle swarm optimization and the CPLEX toolbox are used to solve the problem. Finally, a typical industrial park in Jilin Province is taken as an example to verify that the proposed planning method is more suitable for the actual situation of the project and has a more superior economic efficiency.