面向碳中和的区域供冷系统和海上风电的协同规划分析  

Coordinated Planning of Offshore Wind Power and District Cooling Systems With Thermal Energy Storage for Carbon Neutrality

作　　者：马建波 王朝晖 MA Jianbo;WANG Zhaohui(Shenzhen Qianhai Energy Technology Development Co.,Ltd.,Shenzhen 518054,Guangdong Province,China)

机构地区：[1]深圳市前海能源科技发展有限公司,广东省深圳市518054

出　　处：《中国电机工程学报》2024年第20期8061-8072,I0012,共13页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

摘　　要：城市区域供冷系统要实现碳中和,需要从区域外输入零碳可再生能源。该文对带有大规模蓄冷的区域供冷系统与海上风电的源荷储一体化协同规划做分析,探索区域供冷系统实现碳中和的路径,以及区域供冷系统如何更好消纳海上风电。根据区域供冷系统供冷负荷与海上风电发电负荷率各自的时间规律,提出了制冷机、海上风电、谷段蓄冷时长等装机容量匹配和源荷储能量平衡的数学模型,并对区域供冷系统能耗100%采用海上风电和100%消纳夜间谷段风电两个场景进行分析,得出不同场景的装机容量匹配,以及全年海上风电消纳比例变化和区域供冷系统利用可再生能源比例变化。随着制冷机装机容量的增加,夜间谷段风电消纳比例与区域供冷系统蓄冷量占比均增加。随着风电装机的增加,区域供冷系统电力供应中风电的比例逐渐增加。增加谷段蓄冷小时数、增加制冷机装机容量、增加风电装机容量均可以提高风电蓄冷占比,该文对上述影响因素做了量化分析。To achieve carbon neutrality of the district cooling systems(DCS)in cities,large amount of renewable energy input is required from outside of the city.In this paper,source-load-storage planning is analyzed for the DCS with large-scale thermal energy storage(TES)utilizing offshore wind power to explore the carbon neutrality roadmap of DCS and how the DCS utilizes the offshore wind power.Based on the DCS hourly cooling load curves and the offshore wind power output curves of the year,a mathematical model is developed for the energy balance and the capacity match of chillers,offshore wind power,and valley TES hours.Two scenarios are analyzed with the model including 100%DCS energy consumption from offshore wind power and 100%night valley offshore wind power consumed by DCS.The chiller capacity and offshore wind power capacity are obtained for the given DCS peak load,and the energy supply ratio of DCS from offshore wind power and the utilization ratio of offshore wind power by DCS are analyzed for each month of the year.The effects of chiller capacity,offshore wind power capacity,and valley TES hours on the source-load-storage system are analyzed and the results show that with the increase of chiller capacity,the utilization ratio of night valley offshore wind power and the valley TES supply ratio of DCS increase,and with the increase of offshore wind power capacity,the energy supply ratio of DCS from offshore wind power increases.Increasing valley TES hours,chiller capacity,or offshore wind power capacity,the valley TES supply ratio of DCS from offshore wind power increases.

关 键 词：区域供冷系统 蓄冷 海上风电 规划 容量匹配 评价指标 

分 类 号：TM73[电气工程—电力系统及自动化]