太阳能与压气机抽气储能燃气轮机CHP系统耦合特性分析  

Source-load coupling characteristics analysis of gas turbine-based CHP system with solar hybrid and compressor bypass air extraction energy storage

作　　者：杨海亮 杨承[1] 谢广平 李华[1] 马晓茜[1] YANG Hailiang;YANG Cheng;XIE Guangping;LI Hua;MA Xiaoqian(School of Electric Power,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学电力学院,广东广州510640

出　　处：《热力发电》2021年第12期92-99,共8页Thermal Power Generation

基　　金：广东省基础与应用基础研究基金项目(2020A1515011103);广东省能源高效清洁利用重点实验室项目(2013A061401005)。

摘　　要：压气机抽气储能调控可改善燃气轮机能源系统性能,为了使燃气轮机系统更加灵活、高效地与外界负荷匹配,提出太阳能耦合压气机出口抽气储能的燃气轮机热电联产系统。通过建立空气透平、余热锅炉和太阳能集热器的变工况数学模型,利用Thermoflex软件建立燃气轮机压气机出口抽气变工况模型,并对耦合系统进行变工况分析,研究系统在储能、释能和运行周期内热力参数的变化,以华南地区某宾馆的逐时负荷为例对太阳能耦合压气机出口抽气储能的热电联产系统进行案例分析,并与基准热电联产系统对比。结果表明:以某典型日为1个周期,本文设计系统的1次能源利用率比传统热电联产系统高3.2%,㶲效率高2.4%。Compressor bypass extraction and energy storage regulation can improve the performance of gas turbine system.In order to make the gas turbine system run more flexibly and efficiently to match the external load,a cogeneration system coupled with photothermal and compressor bypass air extraction energy storage is proposed.Offdesign mathematical models of air turbine,heat recovery steam generator and solar collector are established.The off-design model for gas turbine compressor bypass air extraction is established by Thermoflex software.The offdesign characteristics of the coupling system is analyzed,to investigate the changes of thermodynamic parameters of the system during the whole running period of energy storage and release.Taking the load of a hotel in South China as an example,the presented system is analyzed and compared with the benchmark co-generation system.The results show that,in a typical day as a cycle,the primary energy utilitzation ratio and exergy efficiency of the presented system is 3.2%and 2.4%higher than that of the conventional cogeneration system,respectively.

关 键 词：热电联产 燃气轮机 抽气储能 太阳能 变工况特性 

分 类 号：TK121[动力工程及工程热物理—工程热物理]