综合智慧能源2026，Vol.48Issue(5)：74-82,9.DOI:10.3969/j.issn.2097-0706.2026.05.008
基于熔盐储能的热电联产供汽扩容可行性研究
Feasibility study on steam supply expansion of combined heat and power based on molten salt energy storage
摘要
Abstract
Combined heat and power(CHP)units utilize part of the steam that has performed work as a secondary product for heating or industrial steam supply,which is an important approach for in-depth energy saving and emission reduction.However,the operation mode of CHP units—where power generation is determined by heat demand—limits their deep peak shaving capability.Molten salt energy storage technology can improve the operational flexibility of units and achieve heat-power decoupling to a certain extent.Therefore,a 660 MW power unit with a steam supply of 150 t/h(at 1.8 MPa and 300℃)was taken as the case study,and the EBSILON software was used for modeling to optimize the conventional steam supply scheme of desuperheating and depressurizing the hot reheat steam.By combining the ejector on the steam turbine side and the molten salt device on the heating network side,a steam supply scheme was proposed—namely,the main steam extraction-induced hot reheat steam coupled with molten salt.This scheme stored heat during the off-peak electricity price period and released the stored heat during the peak electricity price period.The results showed that to provide industrial steam supply of 150 t/h(at 1.8 MPa and 300℃),the power operation range of the units under the original steam supply scheme was 39.34%～94.08%turbine heat acceptance(THA),while that under the molten salt-coupled steam supply scheme was 21.74%～99.17%THA.The molten salt steam supply scheme not only broadened the safe operation boundary of heat supply,but also extended the operation range of thermal power units,thereby providing a reference for heat storage systems to participate in unit operation scheduling.On a typical day,the increased benefits after configuring the molten salt system mainly came from compensation benefits and coal-saving benefits.The coal consumption cost was reduced by 178 700 yuan per day,the new compensation benefits reached 351 000 yuan per day,the daily profit increased by 392 300 yuan,and the system payback period was 5.54 years.关键词
熔盐储能/热电联产/电力调峰/仿真模型/经济性分析/灵活性改造Key words
molten salt energy storage/combined heat and power generation/power peak shaving/simulation model/economic analysis/flexibility retrofit分类
能源科技引用本文复制引用
张永剑,李彬,邢阁玉,孙俊鹏,徐钢,薛小军..基于熔盐储能的热电联产供汽扩容可行性研究[J].综合智慧能源,2026,48(5):74-82,9.基金项目
国家自然科学基金项目(52406019) National Natural Science Foundation of China(52406019) （52406019）
