中国电力 ›› 2022, Vol. 55 ›› Issue (4): 145-155.DOI: 10.11930/j.issn.1004-9649.202103031

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考虑天然气季节性存储的综合能源系统年度运行方式研究

刘赫川1, 周孝信1, 杨小煜1, 李亚楼1, 李雄2   

  1. 1. 中国电力科学研究院有限公司 国家电网仿真中心,北京 100192;
    2. 华北电力大学 电气与电子工程学院,北京 102206
  • 收稿日期:2021-03-04 修回日期:2022-02-21 出版日期:2022-04-28 发布日期:2022-04-24
  • 作者简介:刘赫川(1990—),男,通信作者,博士研究生,从事电力系统仿真、综合能源系统建模与优化等研究,E-mail:liuhechuan90@163.com;周孝信(1940—),男,中国科学院院士,博士生导师,从事电力系统分析、稳定和控制等研究;杨小煜(1971—),男,博士,高级工程师,从事电力系统数字仿真、综合能源分析计算研究;李亚楼(1974—),男,博士生导师,高级工程师(教授级),从事电力系统建模与仿真研究;李雄(1992—),男,博士研究生,从事电力系统分析、高电压系统仿真建模等研究
  • 基金资助:
    国家重点研发计划资助项目(面向跨境互联的多能互补新型能源系统关键技术研究,2018 YFE0208400),国家电网有限公司科技项目(面向跨境互联的多能互补新型能源系统关键技术研究)。

Annual Operation Mode Study of Integrated Energy System Considering Seasonal Natural Gas Storage

LIU Hechuan1, ZHOU Xiaoxin1, YANG Xiaoyu1, LI Yalou1, LI Xiong2   

  1. 1. State Grid Simulation Center, China Electric Power Research Institute, Beijing 100192, China;
    2. School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
  • Received:2021-03-04 Revised:2022-02-21 Online:2022-04-28 Published:2022-04-24
  • Supported by:
    This work is supported by National Key Research and Development Program of China (No.2018 YFE0208400), Science and Technology Project of SGCC (Key Technologies of Novel Integrated Energy System Considering Cross-border Interconnection).

摘要: 为研究电气耦合日益加深的综合能源系统中能量供给的充足性和安全性,需要对其年度运行方式进行仿真。提出一种多时间尺度的综合能源系统年度生产模拟方法,考虑天然气存储等季节性波动因素,优化电气耦合系统年度运行方式,在因清洁供暖而导致天然气消耗大幅增加的算例系统中对该方法进行验证,同时评估大规模季节性天然气存储对综合能源系统年度运行方式的影响并给出建议。在此基础上,分析冷热电联产装置逐渐增加的装机量对电气耦合系统的影响。结果表明:冷热电联产机组可以降低季节性天然气存储装置的工作强度,包括减少工作时间以及降低存储量。造成这种影响的主要原因是三联供机组的制冷模式与电制冷相比效率更高,减少了天然气消耗量。

关键词: 电气耦合, 综合能源系统, 年度生产模拟仿真, 天然气存储, 清洁供暖, 冷热电联产

Abstract: For the evaluation of the adequacy and security of energy supply in the integrated energy system with increasing electricity and gas coupling, it is necessary to simulate its annual operation mode. A multiple time scale simulation method for annual energy production of the integrated energy system is proposed to optimize the annual operation mode of the electricity and gas coupling system. Seasonal fluctuation factors such as natural gas storage are also considered in this method. The proposed method is validated in a designed system with increasing consumption of natural gas due to clean energy heating, and the impact of large-scale seasonal natural gas storage on the annual operation mode of the integrated energy system is analyzed. Furthermore, the influence of the increasing installed capacity of the combined cooling, heating, and power (CCHP, also known as tri-generation) unit on the coupling system is presented. The results indicate that the CCHP unit can reduce the working intensity of the seasonal natural gas storage unit, namely, the reduction of operation time and storage capacity. The main reason for this effect is that the refrigeration mode of CCHP is more efficient than that of electric refrigeration, which curtails the consumption of natural gas.

Key words: electricity and gas coupling, integrated energy system, annual energy production simulation, natural gas storage, clean energy heating, combined cooling, heating, and power