摘要
综合能源系统(IES)具有高能效及低排放量等优势。针对IES传统运行策略导致的供热侧与用户侧不匹配、弃热多等问题,本工作构建了含电热混合储能的IES,提出一种分时序灵活运行策略,考虑设备变工况特性以及能量品质系数法开展三目标优化,基于能值理论研究综合能源系统的可持续性。研究结果表明,相比于常规运行策略,分时序灵活运行策略下IES的能源综合利用率提升5%,运行成本降低6.22×10^(5) CNY,在能值分析中其具有最高的可持续性发展指数(4.18)。不同策略下燃气锅炉容量都较大,运行过程中其为主要供热单元。同时,天然气价格对系统可持续性影响幅度为36%左右,电价影响幅度较大,最高可达72.33%。
Integrated energy systems(IESs)offer high energy efficiency and low emissions.To address challenges such as mismatches between the heating and user sides and excessive waste heat under traditional operation strategies,this paper proposes an IES incorporating an electric-thermal hybrid energy storage system and introduces a time-sequential flexible operation strategy.By considering equipment operating characteristics and using the energy quality coefficient method,a three-objective optimization is performed.The sustainability of the IES is further evaluated through emergy analysis.The results show that compared with the conventional strategy,the time-sequential flexible operation strategy improves the comprehensive energy utilization rate by 5% and reduces operating costs by 626,544 yuan.It also achieves the highest sustainability development index(4.18)in the emergy analysis.The gas boiler maintains a relatively large capacity across different strategies,serving as the primary heating unit.Additionally,natural gas prices impact sustainability by approximately 36%,while electricity prices have a more substantial effect,reaching up to 72.33%.
作者
李嗣文
朱轶林
徐玉杰
周学志
富征阳
吴佳骏
韩若凝
程柳
张华良
陈海生
LI Siwen;ZHU Yilin;XU Yujie;ZHOU Xuezhi;FU Zhengyang;WU Jiajun;HAN Ruoning;CHENG Liu;ZHANG Hualiang;CHEN Haisheng(Research Center of Fluid Machinery Engineering and Technology,Jiangsu University,Zhenjiang 212013,Jiangsu,China;Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China;Nanjing Institute of Future Energy Systems,Nanjing 211135,Jiangsu,China)
出处
《储能科学与技术》
北大核心
2025年第9期3447-3462,共16页
Energy Storage Science and Technology
基金
国家重点研发-国家质量基础设施体系(2023YFF0612000)
北京市自然科学基金青年项目(3244047)
国家自然科学基金青年项目(52406278)
国家重点研发-储能与智能电网技术(2022YFB2405200)。
关键词
综合能源系统
运行策略
能值分析
可持续性
integrated energy system
operation strategy
emergy analysis
sustainability
