某大型公共建筑分布式能源系统集成与优化运行研究

以某大型公共建筑分布式能源系统为例，根据其冷、热、电负荷特性，对基于燃气轮机和燃气内燃机2种类型的分布式能源系统的经济效益评估进行分析，提出了“燃气冷热电三联供系统加电制冷机组加燃气锅炉加蓄能系统”的整体设计方案。选择冷热电三联供系统的配置，分析其系统集成与优化运行控制策略，并将其与燃气直燃型一体化机组进行经济性和节能性对比，结果表明其平均能源综合利用效率为82．5％，供热经济性优势明显，但投资回收效果不理想。

Integration and Optimized Operation of Distributed Energy System in a Large Public Building

The paper takes the distributed energy system as an example and analyzes economic benefit evaluation on distributed energy system based on gas turbine and gas engine in line with load characteristics of cooling,heating and power.It brings forward an overall design scheme of "combined cooling,heating and power plus power refrigeration units plus gas boiler plus energy storage system".Configuration of combined cooling,heating and power is reasonably chosen and control strategy for system integration and optimized operation is analyzed;besides,the system is compared with integrated direct gas fired units in respects of economical efficiency and energy saving.The result shows that the average overall energy utilization rate is 82.5%,and economical efficiency of heat supply is prominent while capital recovery is unsatisfying.