燃煤机组变负荷瞬态过程的实时能耗分析  

Real-time Energy Consumption Analysis of Coal-fired Power Units During Load Change Transient Processes

作　　者：何宁 谢天 尹俊杰 王文彬 崔青汝 赵永亮[2] HE Ning;XIE Tian;YIN Junjie;WANG Wenbin;CUI Qingru;ZHAO Yongliang(CHN Energy New Energy Technology Research Institute,Beijing 102211,China;State Key Laboratory of Multiphase Flow in Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China)

机构地区：[1]国家能源集团新能源技术研究院有限公司,北京102211 [2]西安交通大学动力工程多相流国家重点实验室,西安710049

出　　处：《动力工程学报》2023年第2期158-164,共7页Journal of Chinese Society of Power Engineering

基　　金：国家能源集团公司科技创新资助项目(GJNY-19-06-1)。

摘　　要：基于燃煤机组稳态工况下的能耗计算方法以及瞬态过程的运行特性,考虑非稳态运行中锅炉蓄热量的变化以及蒸汽热力参数对汽轮机效率的影响,为适应工程应用对该理论模型进行了简化,最终建立了一种更具普适性的能耗分析模型,实现燃煤机组运行全工况下的实时能耗计算。将能耗分析模型应用于某660 MW超超临界燃煤机组,进行了可靠性验证,选取特定的变负荷过程,对比分析了能耗分析模型与热力系统仿真模型的煤耗量计算值。结果表明:实际运行工况下能耗分析模型的煤耗量计算值与实测煤耗量变化趋势相符;2种模型的标准煤耗率最大偏差在1%以内。Based on the calculation method of the energy consumption in the steady-state conditions and the operating characteristics during the transient processes of coal-fired power units,considering the change of boiler heat storage during the transient processes and the influence of steam thermodynamic parameters on the turbine efficiency,a more general energy consumption analysis model was established,which makes some simplification to meet engineering application requirements.The real-time energy consumption calculation of coal-fired units could be realized under the whole operating condition with the model.The energy consumption analysis model was applied to a 660 MW ultra-supercritical coal-fired power unit to verify the reliability,and the calculated coal consumption was compared with that of thermal system simulation model during the selected typical load change processes.Results show that the calculated energy consumption results are consistent with the trend of the measured coal consumption.Furthermore,the maximum deviation between the calculated values of the standard coal consumption rate with these two models is less than 1%.

关 键 词：燃煤机组 能耗分析 标准煤耗率 锅炉蓄热 变负荷 

分 类 号：TK223.7[动力工程及工程热物理—动力机械及工程]