配置蓄热装置对热电机组运行经济性的影响分析  

Analysis of the Influence of Heat Storage Device on the Operation Economy of Thermal Power Unit

作　　者：张云鹏[1] 金晶[1] 高新勇 候封校 ZHANG Yun-peng;JIN Jing;GAO Xin-yong;HOU Feng-xiao(School of Energy and Power Engineering,Universily of Shanghai for Science and Technology,Shanghai,China,200003;Huadian Electrie Power Research Inetiute,Hanghou,China,310030)

机构地区：[1]上海理工大学能源与动力工程学院,上海20093 [2]华电电力科学研究院,浙江杭州310030

出　　处：《热能动力工程》2022年第8期143-149,共7页Journal of Engineering for Thermal Energy and Power

摘　　要：为了解决我国“三北”地区的弃风、弃电问题,提升热电机组的调峰能力尤为重要,在热电机组中配置蓄热罐可实现“热电解耦”,是扩大机组调峰空间的有效方法。本文以某330 MW亚临界机组为研究对象,利用Aspen Plus软件构建了配置蓄热装置的热电机组仿真模型,借助煤耗量、能量效率等指标,分析了蓄热装置的抽汽位置对热电机组经济性的影响。模拟结果表明:热电机组在不同工况下模拟计算结果均与实际工程数据吻合良好,验证了计算模型的可靠性;在机组的采暖抽汽口抽汽进行蓄热,最为经济合理;针对选取的六种典型工况,配置蓄热装置后的机组相比原机组最高可节省总煤耗量7 003.74 kg,平均每小时可减少1 167.29 kg燃煤量。In order to solve the problem of wind and solar power curtailment in the "three north" regions of China, it is particularly important to improve the peak regulation capacity of thermal power units. Installing heat storage tank in thermal power plant is the effective method to realize "thermoelectric decoupling" and widen the peak regulation space of unit. This paper takes a 330 MW subcritical unit as the research object, uses Aspen Plus software to construct a simulation model of a thermal power unit equipped with heat storage device, and analyzes the influence of the extraction location of heat storage device on the economy of thermal power unit through the indices of coal consumption and energy efficiency, etc.The simulation results show that the simulated calculation results of thermal power unit under different working conditions are in good agreement with practical engineering data, which verifies the reliability of calculation model.It is most economical to extract air and store heat at heating extraction opening of unit.According to the selected six typical working conditions, the unit equipped with heat storage device can save coal consumption of 7 003.74 kg at most compared with the original unit, and the average coal consumption can be reduced by 1 167.29 kg per hour.

关 键 词：热电联产 蓄热 调峰 Aspen Plus 经济性分析 

分 类 号：TK284.1[动力工程及工程热物理—动力机械及工程]