考虑能效的园区综合能源系统运行优化策略

Operation Optimization Strategy of Park-level Integrated Energy System Considering Energy Efficiency

为分析能源利用效率对综合能源系统运行的影响,提出了一种考虑能效的多目标运行优化策略。首先,在典型园区综合能源系统的基础上,构建了冷热电联供的综合能源系统模型。然后,提出能效用以量化综合能源系统的能源利用水平。接着,以综合能源系统运行经济性和能效为优化目标,通过最大化加权隶属度函数把多目标模型转化为单目标模型求解。最后,选取华北某综合能源示范园区作为算例验证所提运行优化策略的有效性。

The present work analyzed the influence of energy utilization efficiency on the operation of integrated energy system,and proposed a multi-objective operation optimization strategy considering energy utilization efficiency.First the cold-head-power-integrated energy system was modeled based on the typical park-level integrated energy system.Second the use of energy utilization efficiency in quantifying energy utilization level of the integrated energy system was proposed.Third the optimization model with multiple objective functions for operating economy and energy utilization efficiency was converted into a single-objective model by maximizing the weighted membership function.Finally the case verification on an actual integrated energy demonstration park in North China was carried out to check the effectiveness of the proposed operational optimization strategy.