Coordinated Planning of Offshore Wind Power and District Cooling Systems With Thermal Energy Storage for Carbon Neutrality
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.
district cooling systemsthermal energy storageoffshore wind powerplanningcapacity matchevaluation criteria
万方数据
维普
