基于动态仿真模型的SAPG系统热力特性研究

Study of the Thermodynamic Characteristics of a SAPG ( Solar Thermal Aided Power Generation) System Based on a Dynamic Simulation Model

提出了以直接产生蒸汽型槽式聚光集热系统(Direct Steam Generation in Parabolic Trough Collectors,DSG-PTC)为辅助热源的太阳能热辅助燃煤机组一体化发电系统(Solar Thermal Aided Power Generation,SAPG)的6种集成方案;利用动态仿真模型从系统的层面研究了SAPG系统的运行特性,反映了两种能源系统间热力参数的匹配规律,验证了相关文献[2,7-9]所列举的SAPG系统各种集成方案的可行性;仿真试验分析了太阳进出云层过程SAPG系统动态响应特性;从热力学的角度计算分析了不同集成方式的SAPG系统热经济性,给出了最佳集成方案。

Proposed were six integration versions for a solar energy thermal-aided coal-fired unit integration power generation system with a direct steam production trough type concentrated heat collection system( direct stream generation in parabolic trough collector,DSG-PTC) serving as the auxiliary heat source. By making use of a dynamic simulation model,the authors studied the operation characteristics of the SAPG system from the viewpoint of a system,which reflected the law governing the matching of the thermal parameters between the two kinds of energy system and verified the feasibility of various integration versions for SAPG systems listed in literatures [No. 2,7- 9]. Through the process of the sun going in and out from the cloud stratum,the dynamic response characteristics of the SAPG system were simulated and analyzed. From the angle of the thermodynamics,the thermal cost-effectiveness of the SAPG system was calculated and analyzed in various integration modes and the optimum integration version was given out.