压缩空气储能系统与火电机组的耦合方案研究  

Research on Coupling Schemes of a Compressed Air Energy Storage System and Thermal Power Unit

作　　者：李斌[1] 陈吉玲 李晨昕 陈海生[2] 纪律[2] LI Bin;CHEN Jiling;LI Chenxin;CHEN Haisheng;JI Lü(Energy and Power Engineering,North China Electric Power University,Baoding 071003,Hebei Province,China;Institute of Engineering Thermophysics,Chinese Academy Sciences,Beijing 100190,China)

机构地区：[1]华北电力大学动力工程系,河北保定071003 [2]中国科学院工程热物理研究所,北京100190

出　　处：《动力工程学报》2021年第3期244-250,共7页Journal of Chinese Society of Power Engineering

摘　　要：针对火电机组的灵活改造,提出一种压缩空气储能系统与火电机组的耦合方案,利用Ebsilon软件进行系统建模,将热耗率和能量利用系数作为评价参数。结果表明:最佳方案为储能阶段从凝结水泵出口抽取凝结水,其吸收压缩热后被送回至除氧器;释能阶段取少量5号抽汽,其加热高压空气后被送回至5号低加疏水冷却器;通过改变膨胀机入口空气温度和质量流量可以改变膨胀机的功率。Aiming at the flexible transformation of thermal power units,coupling schemes of a compressed air energy storage system and thermal power unit were proposed.The system simulation was conducted using Ebsilon software,which was evaluated by heat consumption rate and energy utilization factor.Results show that the optimal coupling scheme is to extract condensate from outlet of the condensate pump in the energy storage stage,which would be sent back to the deaerator after absorbing compression heat.In the energy release stage,a small amount of No.5 extraction steam is taken,which is used to heat high-pressure air and then sent it back to the No.5 LP heater drain cooler.Working power of the expander can be changed by changing its inlet air temperature and mass flow.

关 键 词：AA-CAES 火电机组 热耗率 能量利用系数 调峰调频 

分 类 号：TK123[动力工程及工程热物理—工程热物理]