面向绿色海岛微型综合能源系统的储能系统容量规划方法

Capacity planning method of energy storage system for micro integrated energy system in environmental friendly islands

发展微型综合能源系统,合理配置储能装置,是实现大幅提高清洁能源比重、提升综合能源利用效率、构建"清洁能源岛"目标的重要手段。为此,在对比分析了不同类型储能技术运行特性的基础上,充分考虑了非补燃式压缩空气储能(NSF-CAES)在综合能源系统中的应用优势,以NSF-CAES技术为代表,研究了面向微型综合能源系统的储能系统容量规划方法。首先,面向优化规划问题,考虑NSF-CAES系统的热电联储/联供特性,构建了NSF-CAES系统的运行约束集合;在此基础上,面向微型综合能源系统,以最大化NSF-CAES为系统带来的净效益为目标,提出了NSF-CAES系统的容量规划方法;然后,通过等价线性转换的方法,将所建规划模型转换为便于求解的混合整数线性规划模型;最后,通过仿真算例验证了所建模型的有效性。仿真结果表明:虽然NSF-CAES电站的总投资成本较高,但由于其具有寿命长的优势和热电联储/联供能力,配置NSF-CAES系统能为微型综合能源系统带来明显的经济效益。

The development of micro integrated energy systems and rational allocation of energy storage devices are important means to achieve the goal of substantially increasing the proportion of clean energy,increasing the utilization efficiency of comprehensive energy and building a clean energy island.Therefore,based on the comparison and analysis of the operation characteristics of different types of energy storage technologies,the application advantages of NSF-CAES(Non-Supplementary Fired Compressed Air Energy Storage)in the integrated energy system are fully considered.Taking NSF-CAES technology as a representative,the capacity planning method of energy storage system for micro integrated energy system is studied.Firstly,considering the combined heat and power storage/generation characteristics of NSF-CAES,the operation constraint set of NSF-CAES system is constructed for optimal planning problem.On this basis,the capacity planning method of NSF-CAES system is proposed for the micro integrated energy system with the objective of maximizing the net benefit brought by NSF-CAES.Then,by means of equivalent linear transformation,the established planning model is transformed into the mixed integer linear programming model which can be solved easily.Finally,the validity of the established model is verified by a simulation example.Simulative results show that although the total investment cost of NSF-CAES station is relatively high,installing NSF-CAES system can bring significant economic benefits to the micro integrated energy system due to its merit of long lifetime and its unique capability of combined heat and power storage/generation.