抽汽蓄热方式对供热机组耦合系统性能影响分析  

Influence of Extraction Steam Storage Mode on Performance of Coupling System of Heating Unit

作　　者：魏超[1] 朱生华[1] 俎海东 WEI Chao;ZHU Shenghua;ZU Haidong(Inner Mongolia Power Research Institute,Hohhot 010020,China)

机构地区：[1]内蒙古电力科学研究院

出　　处：《内蒙古电力技术》2019年第4期7-11,共5页Inner Mongolia Electric Power

基　　金：内蒙古电力科学研究院2017年自筹科技项目(510241180001K)

摘　　要：针对某个含有储能装置的供热机组综合系统,研究了应用储能装置提升机组运行灵活性的方法。基于燃煤机组和储能装置耦合基本原理,提出了2种储能抽汽蓄热方案,并利用EBSILON热力计算软件搭建了燃煤机组和储能装置的热力学模型,分析了各方案对系统经济性的影响。研究结果表明,储能过程中采用两段混合抽汽方案的经济性要优于只有一段抽汽方案,机组热耗率可降低40 kJ/kWh;在相同运行工况下,增加蓄热抽汽量会降低系统的经济性。Aiming at a heat-supply unit integrated system with energy storage device,the method of using energy storage device to improve the operation flexibility of the unit was studied.Based on the coupling principle of coal-fired units and energy storage devices,two energy storage schemes of steam extraction were proposed.The thermodynamic models of coal-fired units and energy storage devices were built by using EBSILON thermal calculation software,and the effects of these schemes on system economy were analyzed.The results showed that the economy of two-stage mixed extraction scheme was better than that of only one-stage extraction scheme in the energy storage process,and the heat consumption of the unit could be reduced by 40 kJ/kWh;under the same operating conditions,the economy of the system would be reduced by increasing the heat storage and extraction capacity.

关 键 词：抽汽蓄热 供热机组 储能装置 热耗率 耦合 

分 类 号：TK02[动力工程及工程热物理] TK269.2