塔式太阳能光热配套系统性能研究

Performance Research on a Solar Tower Power System Integration into a Coal-fired Power Plant

以某350 MW国产亚临界燃煤机组为例,与塔式太阳能光热系统配套,形成太阳能光热配套电站系统,确定塔式太阳能光热系统配套电站的设计方案。基于STAR-90仿真平台建立实时动态仿真模型,通过简单的仿真试验对方案进行改进,模拟了某地春分日一天内满负荷、降负荷条件下和四个季节某一天内满负荷条件下塔式太阳能系统的工作过程,对太阳能系统和机组的运行特性进行分析。模拟结果表明,该模型能准确反映太阳能的引入对整个机组运行特性和经济性的影响,为太阳能热发电的应用提供了试验基础。

A design scheme of a solar thermal power plant is developed by combining the tower solar thermal system with a fire unit, taking a certain 350 MW sub critical coal fired unit as an example. Based on the STAR-90 simulation platform, the real-time dynamic simulation model is established. Moreover, the scheme is also bettered in accordance with the rather simple simulation results. And the tower solar system working process is simulated in a day in the spring equinox under the condition of full load, downing load and a day within four seasons under the condition of full load. Meanwhile, the operating charateristics of solar system and unit are analyzed. Finally, the simulation results show that the model can accurately reflect the impact brought by the introduced solar energy on the operating characteristics and economics of the whole unit, and it provides the experimental basis for the applica- tion of solar thermal power generation.