建立了光伏、光热和天然气耦合利用的冷热电联供系统，研究了系统运行策略、燃气轮机控制策略和太阳能利用策略对系统总体性能的影响规律，并综合考虑经济性、节能性、环保性的系统性能评价指标，优化了系统容量配置和运行参数。研究表明:系统在热跟随、燃气轮机变负荷运行、太阳能光伏光热一体化利用条件下总体性能最优；特定用户负荷下，系统存在最优设备容量和电制冷比，在热跟随模式下最优开关系数值比较小，避免了频繁启停。

Energy conservation and environmental friendliness.Multi-energy coupling CCHP system is the efficient path to utilize the renewable energy.Based on the coupling utilization of solar energy and natural gas,multi-energy coupling CCHP system was developed.The system economy,environmental protection and energy saving are the goals of the system optimization and design.The key devices′capacities and operating parameters were optimized.And the operation strategy,control strategy of the gas turbine,and the utilization strategy of solar energy were analyzed.The results showed that the performance of the system was the best when the system operation following the thermal loads (FTL),the gas turbine working in variable load operation and the photovoltaic/thermal solar technologies were applied.In a specific user load,there were optimal capacity and electric chiller ratio.The optimal switching coefficient was small with the operation following the thermal loads.In that condition,the frequent stops and starts of gas turbine could be avoided.

TM61

国家高技术研究发展计划(863计划)(2014AA052803)