摘要
为研究光热发电系统的持续发电时间,根据四季直射辐射(Direct Normal Irradiance,DNI)指数变化下的蓄热规律,建立合理的发电运行策略,对集热器和汽轮机建立了热力模型,并应用时间序列分析方法结合气候条件分析了光热发电系统在不同工况下的运行时间。结果表明:夏季集热效率虽然不是最高,但集热量最多,汽轮机运行时间最长、发电量最多;冬季集热效率稳定但热经济性差,集热量最少且汽轮机运行时间最短,发电量最少;春秋季集热效率高但气候条件不稳定,其发电量比夏季少但比冬季多。
For purpose of investigating continuous generation time of the solar thermal power generation system,having the heat storage rule under the variation of four seasons DNI index based to establish a reasonable power generation operation strategy was implemented,including the establishment of thermal model for heating collector and the steam turbine,and applying the time series analysis method which combined with climate conditions to analyze operating time of the solar thermal power generation system under different working conditions.The results show that in summer,the heat collecting efficiency is not the highest but the heat-collecting capacity is the most and the steam turbine’s running time is the longest and the power generation is the most.In winter,the heat-collecting efficiency is stable but has poor thermal economy,with the minimum heat-collecting capacity and the shortest running time and the least power generation.The heat-collecting efficiency in both spring and autumn is high but the climate conditions are not stable,and the power generation is less than that in summer and more than that in winter.
作者
徐灿君
张岗
曾勇
黄静
廖锷
兰春旭
姜铁骝
张立栋
XU Can-jun;ZAHNG Gang;ZENG Yong;HUANG Jing;LIAO E;LAN Chun-xu;JIANG Tie-liu;ZAHNG Li-dong(PowerChina Zhongnan Engineering Corporation Limited;Xinhua Hydropower Company Limited;School of Energy and Power Engineering,Northeast Electric Power University;MOE Engineering Research Centre of Oil Shale Comprehensive Utilization,Northeast Electric Power University)
出处
《化工机械》
CAS
2022年第1期103-109,共7页
Chemical Engineering & Machinery
关键词
汽轮机
集热器
光热电站
DNI
太阳能
发电量
turbine
heating collector
photothermal power station
DNI
solar power
generating capacity
