塔式太阳能热发电系统性能模型及其仿真研究

结合塔式太阳能热发电系统中主要设备的机理模型和变工况下的运行方式,建立一套能完整反映电站工作过程的性能模型.发电系统在太阳法向直射辐照度扰动下的动态过程研究结果表明:吸热器出口熔盐温度、表面最高温度、散热功率的过渡过程较平缓,效率在瞬时突变后会逐渐恢复到接近扰动发生前的水平;吸热器出口熔盐温度、表面最高温度、散热功率与...

PERFORMANCE MODEL AND SIMULATION STUDY OF SOLAR POWER TOWER SYSTEM

Combining the mechanism model of the main equipment in the solar power tower system with the operating modes under variable working conditions, a performance model that can simulate the entire working process of the power station is developed. The simulation study on the dynamic process of the power system under direct normal irradiance disturbance shows that the transition process of the molten salt outlet temperature, the maximum surface temperature and the heat dissipation power of the receiver is relatively smooth while the efficiency returns gradually to the level before a sudden change; the molten salt outlet temperature, the maximum surface temperature and the heat dissipation power of the receiver are basically proportional to the changes in direct normal irradiance; the efficiency grows with increase in direct normal irradiance, and however, the slope gradually decreases. The simulation study on the adaptability of the power system to the load characteristics of state grid indicates that the system is more suitable for morning rush hours in hot startup mode while it is more suitable for night rush hours in warm startup mode; the weather conditions during rush hours obviously affect the load carrying capacity.