Abstract:

The natural gas distributed energy station has been vigorously promoted and demonstrated in recent year due to its characteristics of clean, high efficiency, safety and environmental protection. The users and load of natural gas distributed energy system are complex and changeable. The energy storage system has a good function of cutting peaks , filling valleys and balancing load. A certain scale of energy storage system can be deployed in the distributed energy station, which can optimize the operation strategy and improve the economics of the system. It takes the cooling supply method of a building type distributed energy station in Shanghai as the research object, and establishes two cold storage schemes which are ice storage scheme and water storage scheme. According to the operation mode and economy analysis, the water storage scheme that adopts waste heat to storage has an 83.2% annual comprehensive utilization rate on average.It is more economical and feasible than the ice storage scheme.

Key words:

natural gas distributed energy, cold storage scheme, economic analysis