塔式太阳能光热发电系统蒸发器动态特性研究  

Study on Dynamic Characteristics of Steam Generator in Solar Tower Power Generation System

作　　者：徐二树[1] 黄钰琛 孔艳强 杜小泽[1] 张强 XU Ershu;HUANG Yuchen;KONG Yanqiang;DU Xiaoze;ZHANG Qiang(School of Energy Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China;Shenzhen Energy Resource Comprehensive Development Co.,Ltd.,Shenzhen 518101,Guangdong Province,China;School of Electrical,Energy and Power Engineering,Yangzhou University,Yangzhou 225127,Jiangsu Province,China)

机构地区：[1]华北电力大学能源动力与机械工程学院,北京102206 [2]深圳能源资源综合开发有限公司,广东深圳518101 [3]扬州大学电气与能源动力工程学院,江苏扬州225127

出　　处：《动力工程学报》2023年第6期710-716,共7页Journal of Chinese Society of Power Engineering

基　　金：国家自然科学基金资助项目(51976058、51821004)。

摘　　要：以Solar Two塔式熔盐光热电站中蒸汽发生器为研究对象,基于质量守恒和能量守恒搭建了蒸发器动态数学模型。以动态数学模型为基础,通过水侧和熔盐侧扰动实验对蒸发器的动态特性进行分析,得到了蒸发器的出口参数响应曲线和时间常数。结果表明:发生扰动后蒸汽发生器需要205 s达到新的平衡,而由于蒸汽侧热容量较大的影响,参数对扰动响应较慢,蒸汽的品质会影响机组的安全性及经济性;与熔盐相比,水和蒸汽具有更高的比容和储液量,水侧参数响应较慢,而熔盐侧响应速度较快。The steam generator in the Solar Two molten salt solar tower power plant was taken as the research object,the dynamic mathematical model of the steam generator was established based on the conservation equations of mass and energy.Based on the dynamic mathematical model,by analyzing the dynamic characteristics of the steam generator with disturbances at water side and molten salt side,the response curves of the outlet parameters and time constant of the steam generator were obtained.Results show that it takes 205 seconds for the steam generator to reach a new equilibrium after disturbance.However,due to the large heat capacity on the steam side,the response of parameters to disturbance is slow,and the quality of steam affects the safety and economy of the unit.Compared with molten salt,water and steam have higher specific volume and liquid storage capacity,the response speed of parameters at water side is much slower than that of molten salt side.

关 键 词：塔式熔盐光热发电 蒸发器 动态数学模型 响应特性 安全运行 

分 类 号：TK11[动力工程及工程热物理—热能工程]