熔盐储能在新型电力系统中应用现状与发展趋势  

Application status and development trend of molten salt energy storage in novel power systems

作　　者：左芳菲 韩伟 姚明宇[1] ZUO Fangfei;HAN Wei;YAO Mingyu(Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an 710054,China)

机构地区：[1]西安热工研究院有限公司,陕西西安710054

出　　处：《热力发电》2023年第2期1-9,共9页Thermal Power Generation

基　　金：国家重点研发计划项目(2018YFB1501004)。

摘　　要：储能是新型电力系统的关键核心技术,熔盐储能作为一种中高温传热蓄热方法,因具有储能密度高、稳定性好等优点,广泛应用于太阳能光热系统、调峰调频、绿电消纳等新能源领域。但目前对熔盐储能系统中的核心部件如储罐、熔盐电加热器、熔盐换热器等设备的研究普遍基于太阳能热发电技术的需求开展,针对其他应用场景的研究尚不够充分。在不同应用场景下,熔盐的使用温度区间、加热及换热方式都有区别。概述了熔盐储能关键技术的研究现状和技术成果,研究了熔盐储能技术的发展路径,提出了其在新型电力系统中的应用领域,并针对不同应用场景,提出了相应的熔盐选型参数、储罐及换热器类型。Energy storage is the key technology of novel power system. As a medium and high temperature heat transfer and heat storage fluid, molten salt has the advantages of high heat capacity and good stability. It has been widely used in concentrated solar power(CSP) system, peak and frequency modification, green electricity consumption and other new energy fields. However, at present, the core components of molten salt energy storage system, such as the tanks, the electric heaters, the heat exchangers, and so on, are studied and developed based on the demand of CSP technology. The other application scenarios are not sufficiently considered. However, in different application scenarios, the working temperature range, heating and heat exchange methods have different requirements on molten salt. Therefore, the research status and technical achievements of the key technologies of molten salt heat storage are summarized. The development path of molten salt energy storage technology and its application in novel power systems are studied. According to the different application scenarios, the requirements on molten salt parameters and the suitable types of storage tanks and heat exchangers are illustrated.

关 键 词：熔盐储能 熔盐储罐 太阳能光热 调峰调频 绿电供热 

分 类 号：TM7[电气工程—电力系统及自动化] TK02[动力工程及工程热物理]