考虑综合能效水平的能源系统多目标优化运行

Multi-Objective Optimized Operation of Energy System Considering Comprehensive Energy Efficiency

作为典型的智慧能源系统,综合能源系统可促进源、网、荷深入融合,提升可再生能源的利用率。因此,智慧能源系统的评价指标应能同时体现低碳、高效的核心特征。基于多能互补的概念,提出了新的评价指标—综合能效水平,用于描述多能系统能源利用效果。考虑到用能经济性是用户自发调整用能策略的核心驱动力,本文以最大化综合能效水平和提高用能经济性为优化目标,提出了综合能源系统多目标优化模型,并在设备物理约束和冷热电平衡的约束下,获取用能优化策略,实现系统出力的优化调度。算例分析表明,本文所提优化调度策略能够全面提升系统用能的清洁性与高效性。

As a typical intelligent energy system,integrated energy system can promote the integration of sources,networks and loads,and improve the utilization of renewable energy. Therefore,intelligent energy systems should be evaluated in terms of core features as low-carbon and high-efficiency at the same time. Based on the concept of multi-energy complement,a newevaluation index,the comprehensive energy efficiency level,is proposed to describe the energy utilization efficiency of multi-energy systems. Considering that the economy of energy consumption is the core driving force of the user to spontaneously adjust the strategy of energy use,this paper takes the maximizing comprehensive energy efficiency level and improving economy of energy consumption as the optimization objective,proposes the multi-objective optimization model of the integrated energy system,and obtains the optimal strategies of energy use under the restrains of both physical and cold-heat-electricity balance,and realizes the optimal dispatching of the system. A case analysis shows that the proposed optimal dispatching strategy can improve the clean-liness and efficiency of the system.