多汽源加热熔盐储能模式在火电机组调峰运行中的分析研究  

The Analysis of Molten Salt Energy Storage Mode with Multiple Vapor Sources Heating in Thermal Power Unit Peaking Operation

作　　者：冯垚飞 冯林魁 卢可 王平 谷志德 赵凯 谢生璐 任艳男 FENG Yao-fei;FENG Lin-kui;LU Ke;WANG Ping;GU Zhi-de;ZHAO Kai;XIE Sheng-lu;REN Yan-nan(Electric Power Research Institute,State Grid Gansu Electric Power Company,Lanzhou 730070,China;Lanzhou Longneng Electric Power Science&Technology Ltd.,Lanzhou 730070,China)

机构地区：[1]国网甘肃电力公司电力科学研究院,兰州730070 [2]兰州陇能电力科技有限公司,兰州730070

出　　处：《汽轮机技术》2025年第1期63-67,共5页Turbine Technology

基　　金：国网甘肃省电力公司科技项目《熔融盐储热热电联产机组深度调峰、顶峰能力技术研究》(项目编号LNKJ-QT-20230822-YF08)。

摘　　要：以350MW热电联产机组为研究对象,针对熔盐储能对能量具有迁移性的特点,结合蒸汽品位、蒸汽分流比等影响参数分别对单汽源、多汽源加热储-释热策略下的调峰能力、热效率、等效往返效率及综合煤耗等评价指标进行了分析研究。根据熔盐系统储-释热特性得到了机组在储热、放热阶段热电特性曲线。分析结果表明:储热模式下,单汽源、多汽源加热熔盐基本可以达到同样的调峰深度,多汽源加热储热策略下的热效率更高,提高蒸汽分流比有利于提升调峰深度;释热模式下,释热量一定,释热蒸汽为冷再蒸汽时,顶峰能力最大。350MW cogeneration unit is used as research object in molten salt energy storage which ischaracterizedby energy mobility,combined with steam grade,steam split ratio,the evaluation indicators such as peaking load,thermal efficiency,equivalent round-trip efficiency and integrated coal consumption were analyzed and studied under the energy storage-releasing strategy with single-vapor source and multi-vapor source heating.The thermoelectric characteristic curve of the unit under the energy storage-releasing stage is obtained according to the storage-releasing characteristics of the molten salt system.The analysis results show that under the heat storage mode,the same peaking depth can be basically achieved under the single-vapor-source and multi-vapor-source heating strategy,the thermal efficiency is higher under the multi-vapor source heating strategy,peaking depth is enhanced by increasing the steam split ratio;under the heat releasing mode with a certain amount of heat releasing,the peaking capacity is greatest when the heat releasing steam is cold re-steam.

关 键 词：熔盐储热 多汽源 调峰 顶峰能力 热电特性 

分 类 号：TM6[电气工程—电力系统及自动化]