基于燃气电站的燃料电池配置双储能结构的混合动力系统性能分析  

Performance analysis on a hybrid power system configured with dual energy storage structure based on gas turbine power plant integrated with SOFC

作　　者：于志勇 边家瑜 余金 史晓超 李博 陈衡 YU Zhi-yong;BIAN Jia-yu;YU Jin;SHI Xiao-chao;LI Bo;CHEN Heng(Economic and Technical Research Institute of State Grid Xinjiang Electric Power Co.,Ltd.,Urumqi 830063,China;Kuitun Power Supply Company of State Grid Xinjiang Electric Power Co.,Ltd.,Kuitun 833200,China;College of Energy,Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]国网新疆电力有限公司经济技术研究院,新疆乌鲁木齐830063 [2]国网新疆电力有限公司奎屯供电公司,新疆奎屯833200 [3]华北电力大学能源动力与机械工程学院,北京102206

出　　处：《现代化工》2024年第8期214-220,共7页Modern Chemical Industry

基　　金：国家电网有限公司科技项目(SGXJ0000FCJS2310288)。

摘　　要：为提升能源利用效率并减少碳排放,提出了一种基于燃气电站的氢、热、电联产的混合动力系统。通过热力学分析和经济性分析对系统进行评估,研究结果显示该系统的能量效率和[火用]效率分别可达到74.60%和64.47%,高于现有研究中的燃料电池-燃气轮机系统。各子系统中燃料电池对混合动力系统总能量输出功率的贡献最大(88.59%),[火用]损失也最大,占总[火用]损失的51.74%,电解水与压缩空气储能系统的相对[火用]损失较小。压缩空气储能控制机组调峰范围在85%~115%,设计工况下电解水单元的产氢速率为0.41 kmol/h,双储能系统的配置增强了机组的调峰能力。此外,该系统具有0.08~0.10 t/GJ的低碳排放,表明对环境影响较小。考虑贴现率等因素,该项目的投资成本在3.66 a内可以收回(含建设周期1 a),计算得净现值为110.690万美元。因此,拟提议方案在经济性方面也表现出一定的优势。To enhance energy utilization efficiency and reduce carbon dioxide emission,a hybrid power system based on hydrogen,heat,and electricity co-generation in a gas plant is proposed.Through thermodynamic and economic analysis on the system,it is revealed that the energy efficiency and exergy efficiency can reach 74.60%and 64.47%,respectively,both higher than the fuel cell-gas turbine system under research and development.Among various subsystems,the fuel cell contributes the most to the total energy output power(88.59%),yet also incurs the highest exergy loss,accounting for 51.74%.However,the relative exergy losses of the water electrolysis and compressed air energy storage subsystems are comparatively lower.The compressed air energy storage unit's control range for peak shaving spans from 85%to 115%,and the electrolysis unit produces hydrogen at a rate of 0.41 kmol·h-1,enhancing the system's peak shaving capacity.Moreover,the proposed system demonstrates low carbon dioxide emission of 0.08 to 0.10 t·GJ-1,indicating minimal environmental impact.Considering discount rates and other factors,the investment cost of this project can be recovered within 3.66 years(including a 1-year construction period),with a net present value of 1.107 million U.S.dollars.Therefore,this proposed approach also exhibits a certain economic advantage.

关 键 词：燃料电池 氢气 储能调峰 余热利用 性能分析 

分 类 号：TK11[动力工程及工程热物理—热能工程] TE09[石油与天然气工程]