塔式光热电站吸热器出口熔盐温度控制研究  

Study of Temperature Control of Molten Salt at Outlet of Heat Absorber of Tower-Type Solar Thermal Power Plant

作　　者：孙海翠[1] 姜震[1] 林磊[1] 胡益[1] SUN Haicui;JIANG Zhen;LIN Lei;HU Yi(East China Electric Power Design Institute Co.,Ltd.,Shanghai 200063,China)

机构地区：[1]华东电力设计院有限公司,上海200063

出　　处：《自动化仪表》2025年第4期54-59,64,共7页Process Automation Instrumentation

基　　金：中国能源建设股份有限公司重大科技专项和重点研发基金资助项目(CEEC2021-ZDYF-12);中国电力工程顾问集团有限公司重大集中开发科技基金资助项目(DG2-X01-2023);中国电力工程顾问集团有限公司集中开发科研基金资助项目(DG2-K01-2024)。

摘　　要：集热塔吸热器出口熔盐温度控制是电站实现太阳能收集转换的关键,直接影响光热电站的经济性、安全性和稳定性。目前,吸热器出口熔盐温度控制多采用单冲量的控制回路,控制效果欠佳。针对吸热器出口温度控制的难点,提出一种多控制器组列协调的控制方法。该方法采用屏间温差控制,结合吸热器出口熔盐温度控制等,以提升吸热器出口熔盐温度控制效果。同时,针对时间及气象因素的影响,提出虑及时间区段及气象因素的屏间温差设定值设置方法,以有效提高吸热器出口熔盐温度控制的准确度。塔式光热电站吸热器出口熔盐温度控制的研究对提升吸热器出口熔盐温度控制效果、光热转换效率具有促进作用。The temperature control of the molten salt at the outlet of the heat absorber of the collector tower is the key to realize the solar energy collection and conversion of the power station,which directly affects the economy,safety and stability of the solar thermal power plant.At present,the heat absorber outlet molten salt temperature control mostly adopts the control loop of single impulse,and the control effect is not good.Aiming at the difficulty of the heat absorber outlet temperature control,a control method coordinated by a multi-controller array is proposed.The method adopts inter-screen temperature difference control,combined with the heat absorber outlet molten salt temperature control,etc.,to improve the heat absorber outlet molten salt temperature control effect.At the same time,for the influence of time and meteorological factors,the method of setting value of inter-screen temperature difference considering the time zone and meteorological factors is proposed to effectively improve the accuracy of the control of the molten salt temperature at the outlet of the heat absorber.The study of temperature control of molten salt at the heat absorber outlet of tower-type solar thermal power plant has promoted the improvement of the control effect of molten salt temperature at the heat absorber outlet and the efficiency of photothermal conversion.

关 键 词：塔式光热电站 集热塔吸热器 熔盐温度 多控制器组列协调控制 温差控制 

分 类 号：TH-39[机械工程]