基于熔盐储热辅助煤电机组深度调峰的系统设计及容量计算方法研究  

Research on system design and capacity calculation method for deep peak shaving of coal-fireunit based on molten salt heat storage assistance

作　　者：马汀山 王伟[2,3] 王东晔 雒青[1,2] 耿如意 张建元 居文平 常东锋 张国龙 MA Tingshan;WANG Wei;WANG Dongye;LUO Qing;GENG Ruyi;ZHANG Jianyuan;JU Wenping;CHANG Dongfeng;ZHANG Guolong(State Key Laboratory of High-Efficiency Flexible Coal Power Generation and Carbon Capture Utilization and Storage,Beijing 102209,China;Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an 710054,China;Xi’an TPRI Energy Conservation Technology Co.,Ltd.,Xi’an 710054,China)

机构地区：[1]高效灵活煤电及碳捕集利用封存全国重点实验室,北京102209 [2]西安热工研究院有限公司,陕西西安710054 [3]西安西热节能技术有限公司,陕西西安710054

出　　处：《热力发电》2023年第7期113-118,共6页Thermal Power Generation

基　　金：国家重点研发计划项目(2022YFB2405205)。

摘　　要：构建以新能源为主体的新型电力系统对于煤电机组深度调峰提出了更高的要求,通过对电网需求的分析以及各种储能技术的对比,以燃煤发电机组的系统特征为出发点,提出了一种基于熔盐储热辅助煤电机组深度调峰的系统,并给出了其运行方式。通过理论分析,给出了熔盐系统加热、储热、换热3个子系统的主要参数计算方法;以某660 MW燃煤机组为例,在分析其热力边界和调峰需求的基础上,依照提出的计算方法,计算得到了熔盐系统电加热模块的功率以及连接方式;选定了熔盐的种类以及换热系统的进出口参数;确定了熔盐储热的容量、用盐量和储罐容积,为准确核算项目投资和项目占地提供了可靠的数据支撑。该系统以及计算方法可为同类型工程项目前期设计提供参考。Building a new power system focusing on new energy resources puts forward higher requirements for deep peak shaving of coal power unit.Through the requirement analysis of power grid and the comparison of various energy storage technologies,taking the system characteristics analysis of coal power unit as the starting point,a system and a operation mode were given which were based on molten salt thermal storage to assist deep peak shaving of coal power unit.Through theoretical analysis,the calculation methods of the main parameters of subsystems including the heating,heat storage and heat exchange of the molten salt system have been put forward.Taking a 660 MW coal-fired unit as an example,based on the analysis of the thermal boundary and peak shaving demand,the power and connection mode of the electric heating module of the molten salt system are calculated using the calculation method proposed in this article.The types of molten salt and the inlet and outlet parameters of the heat exchange system are selected.The capacity,salt consumption and tank volume of molten salt heat storage are determined.All the results provide reliable data support for accurate accounting of project investment and land occupation.This system and calculation method can provide reference for the preliminary design of similar projects.

关 键 词：煤电机组 深度调峰 熔盐储热 容量计算 

分 类 号：TM621[电气工程—电力系统及自动化]