云扰动下太阳能驱动有机朗肯循环发电系统的动态特性  

Dynamic Performance of Solar Driven Organic Rankine Cycle Power System Under Cloud Disturbance

作　　者：赵力[1] 赵玮奇 邓帅[1] 

机构地区：[1]天津大学中低温热能高效利用教育部重点实验室,天津300072

出　　处：《天津大学学报（自然科学与工程技术版）》2016年第1期21-27,共7页Journal of Tianjin University：Science and Technology

基　　金：国家高技术研究发展计划(863计划)资助项目(2012AA051103);国家自然科学基金资助项目(51276123);天津市科技支撑重大项目(11ZCZDGZ19800)

摘　　要：基于200,k W级聚焦型槽式太阳能集热驱动的有机朗肯循环发电系统示范工程,通过Simulink软件建立了系统的动态模型,采用天津地区的气象数据作为输入,分别分析了典型日系统常规工况和太阳受云遮挡造成直射辐射迅速衰减的非常规工况下系统的动态特性.结果表明:常规工况中系统热、电功率与太阳直射辐射两者变化趋势相同,系统平均效率为12.68%;非常规工作状况中系统热源温度变化与达到恶劣工况的时间线性相关,相关系数为4.04;汽轮机发电功率受热源温度突变量影响分别是蒸发器和冷凝器的1.67倍和2.08倍,汽轮机输出对热源温度变化呈现高敏感性.Based on the demonstration project of 200,k W focused organic Rankine cycle（ORC）power system driven by solar parabolic trough collector（PTC）,a dynamic model was built with Simulink. In terms of the meteorological data of Tianjin City,an analysis was conducted on the dynamic performance of developed solar-ORC system under typical design working conditions and under unconventional working conditions mainly caused by cloud shadow. The results show that power/thermal capacity values of main components have the same variation trend with solar radiation and the average system efficiency is 12.68% under conventional working conditions. Under unconventional working conditions,a linear correlation exists between the variation of heat source temperature and the deteriorative time of system performance,the linear dependence coefficient being about 4.04. In addition,the impact of various heat source temperatures on the power generation of turbine is 1.67 and 2.08 times higher than thermal capacities of evaporator and condenser,respectively. The power output of turbine shows a high sensitivity to the variation of heat source temperature.

关 键 词：太阳能 有机朗肯循环 云扰动 动态特性 

分 类 号：TK519[动力工程及工程热物理—热能工程]