摘要
分布式能源联供系统与传统分供系统相比节能率高、环境污染少,是实现节能减排目标的重要途径之一。结合某天然气分布式冷电联供数据中心项目,计算分析了联供系统的一次能源利用效率、节能率、供电效率、供电煤耗、成本回收期,并与分供系统做了对比。结果表明天然气分布式冷电联供系统一次能源利用效率高,供电能耗明显低于发电厂,节能效果非常明显。根据回收期灵敏度分析,联供系统的经济收益和投资回收期限受天然气价格影响较大,当超过一定阈值后,联供系统经济性不如分供系统,所以建造前需充分考虑当地的气价水平。
Compared with traditional distributed system,the co-supply system has high energy saving rate and less environmental pollution,which is one of the important ways to achieve the goal of energy saving and emission reduction.The primary energy utilization efficiency,energy saving rate,power supply efficiency,power supply coal consumption and cost payback period of the combined cooling and power system are calculated and analyzed through a natural gas combined cooling and power project,and a comparsion with other system is made.It states that the combined cooling and power system has higher primary energy utilization efficiency,and lower coal consumption than power plant,which shows an obviouse the energy saving effect.According to the sensitivity analysis of the payback period,the economic income and investment recovery period are greatly affected by the natural gas price.When the threshold is exceeded,the economy is not as good as that of the distributed system.So the local natural gas price and electricity price should be well considered.
作者
丁历威
应鸿
刘强
李磊
梅丘梅
徐一剑
韩高岩
刘虎
DING Liwei;YING Hong;LIU Qiang;LI Lei;MEI Qiumei;XU Yijian;HAN Gaoyan;LIU Hu(Electric Power Research Institute,State Grid Zhejiang Electric Power Co.,Ltd.,Hangzhou 310014,China;Zhejiang Huayun Clearn Energy Co.,Ltd.,Hangzhou 310000,China;State Grid Zhejiang Electric Power Co.,Ltd.,Hangzhou 310000,China;Hangzhou E.Energy Technology Co.,Ltd.,Hangzhou 310014,China)
出处
《电力需求侧管理》
2020年第5期63-66,82,共5页
Power Demand Side Management
基金
浙江省电力有限公司科技项目(5211DS180036)。
关键词
天然气
联供
分供
回收期
natural gas
co-supply system
distributed system
payback period
