再循环式光．煤互补复合发电系统的热经济状态方程  

THERMO-ECONOMIC STATE EQUATION OF A RECIRCULATING SOLAR AIDED POWER SYSTEM

作　　者：安连锁[1] 冯蕾[1,2] 陈海平[1] Eric Hu 张志勇[3] 

机构地区：[1]华北电力大学能源动力与机械工程学院,国家火力发电工程技术研究中心,北京102206 [2]阿德莱德大学机械工程学院,阿德莱德5005 [3]河北农业大学教学试验场,保定071000

出　　处：《太阳能学报》2015年第1期209-215,共7页Acta Energiae Solaris Sinica

基　　金：国家高技术研究发展(863)计划(2013AA05040202)

摘　　要：基于火电机组热力系统的结构特性及其热力特性,运用系统工程观点,提出一种新型再循环式太阳能集热系统与火电机组热力系统的集成方式,建立该再循环式光-煤互补复合发电系统的热经济性状态方程。该方程的结构与复合发电系统的结构一一对应,能从整体上反映出太阳能以及机组辅助汽水进出系统对机组运行热经济性产生的影响及其规律。以300 MW火电机组为例,分析再循环式光-煤互补复合发电系统中太阳能集热系统出口蒸汽替代热力系统各级抽汽的热经济性,结果表明替代蒸汽的运行参数越高,复合发电系统的热经济性越好。Based on structural characteristics and thermal properties of thermal power generation system, from the system engineering point of view, a new way of integrating solar heat into the system, ie. recirculating, is proposed, and themodynamically and economically analyzed in this paper. The analysis was carried out by a newly proposed ＂Thermo- economic state equation＂ approach. The equation developed based on the system structure, could be used to calculate the efficiency of the system at various solar input and steam flow rates, thus to conduct thermal and economical evauation. The ＂thermo-economic state equation＂ approach is simple to use and effective. A case study of a 300 MW system, shows the applicaiotn of the state equation.

关 键 词：再循环式 槽式太阳集热器 光-煤互补复合发电系统 热经济性 状态方程 

分 类 号：TM61[电气工程—电力系统及自动化]