复合供能系统优化配置和运行策略研究
Optimal design and operational strategies of hybrid CCHP-groundwater heat pump system
摘要：
针对由微小型燃气轮机分布式供能系统和地下水地源热泵组成的复合供能系统，以北京市某典型医院为应用对象，分别以年总费用和天然气年节能率为优化目标，对系统在经济最优、以热定电和节能最优3种运行策略下的优化配置和运行规律进行了研究。结果表明，与“电制冷机+燃气锅炉+市电”的常规分供方案和“地下水地源热泵+市电”方案相比，复合供能系统具有经济、节能与电力调峰性能明显等综合优势；与“联合循环+燃气锅炉+电制冷机”模式相比，复合供能系统在传统的经济最优和以热定电运行策略下并不节能，但在节能最优运行策略下可实现节能。
Abstract：
For a hybrid system, comprised of micro gas turbine CCHP and groundwater heat pump, with a case study of a representative hospital in Beijing, separately taking annual total cost and annual natural gas saving rate as optimization objectives, studies optimal design and operation rules of the hybrid system in the three operational strategies of following the electric load, the thermal load and energy saving. The results show that the hybrid system has comprehensive advantages in various aspects, such as economic, energy saving and electric load shaving characteristics, compared with the conventional scheme of electrical refrigerating machine plus gas boiler plus mains supply and the groundwater heat pump scheme. It is also shown that the hybrid system, compared with the system of natural gas combined cycle plus gas boiler plus electrical refrigerating machine, does not save energy in traditional operational strategies of following the electric load and the thermal load, but can save energy in energy-saving-oriented operational strategy.
Keywords:combinedcoolingheatingandpower（CCHP）system,hybridCCHP-groundwaterheatpumpsystem,microgasturbine,groundwaterheatpump,energysavingrate,optimaldesign,operationalstrategy