太阳能辅助燃煤发电系统的瞬态特性研究

Transient Characteristics Study of Solar Assisted Coal-fired Power Generation System

利用太阳能辅助燃煤发电并预热燃煤电厂给水是一种高效、经济的太阳能热利用方式,以太阳能辅助燃煤发电系统为研究对象,对系统的主要子系统进行模型建立,并对不同负荷下的互补发电系统进行瞬态模型研究,基于年性能进行了蓄热量的优化研究。研究表明,当太阳能热刚好替代全部高压加热器时,太阳能热电转化效率最高。

Using the solar assisted coal-fired power generation and preheating feed water was a high efficient and economic way of solar energy heat utilization. By taking the solar assisted coal-fired power generation system as the research object,main subsystem models were established. Based on the research of complementary power generation system transient models under various loads,optimization of annual performance on heat storage was studied. The results showed that photoelectric conversion efficiency was highest when the solar heat exactly replaced the high pressure heater.