三联供耦合水蓄能区域能源站节能减排分析

Energy Saving and Emission Reduction Analysis for CCHP Coupled with Water Energy Storage in District Cooling and Heating System

在峰谷电价较为明显的上海地区,利用夜间谷电蓄能,白天三联供系统与蓄能系统共同供能的某区域能源站,分别采用"蓄能优先,按需发电,自发自用"和"三联供优先,按需蓄能,自发自用"的运行策略,对比常规的冷水机组+锅炉的分散式冷热源系统,模拟运行结果表明,"三联供优先"时节能减排效果明显,全年可节标煤12%,减排36%;采用"蓄能优先"时也具有较好的节能性和减排性。

With the obvious peak-valley electric cost in Shanghai Region, use night valley electricity to store energy, then supply energy together with CCHP system during the day in a district cooling and heating system. Adopts two operation strategies, i.e. ＂energy storage in priority, produce electric load according to the demand, generated for local use＂ and ＂CCHP in priority, store energy according to the demand, generated for local use＂, compares with typical separated cold heat system （chiller and gas boiler）. According to simulation operation results, ＂CCHP in priority＂saves energy and reduces emission obviously, which saves standard coal 12% and reduces CO2 emission 36% a year. ＂energy storage in priority＇also has a fine energy saving and emission reduction effect.