П理论在超超临界汽轮机组回热系统高压加热器变工况的建模研究和试验分析  

Modeling of HP Regenerative Heat Exchanger in Ultra-supercritical Steam Turbine Unit under Variable Conditions based on П Theory

作　　者：于忠平[1,2] 胥建群[1] 

机构地区：[1]东南大学能源环境学院,南京210019 [2]大唐南京发电厂,南京210057

出　　处：《发电设备》2016年第4期215-218,共4页Power Equipment

摘　　要：从Buckingham理论出发,基于高压加热器实际测量数据,建立无量纲数的数学模型(П理论),反映高压加热器的变工况运行。该模型应用于某660 MW超超临界汽轮机组高压加热器上的实践表明:计算结果与实际数据偏差很小,可为同类型机组提供参考。A non-dimensional mathematical model （Ⅱ theory） was built up for high-pressure regenerative heat exchanger according to actual measurements based on Buckingham theory to reflect its operation status under variable working conditions, which was then applied to the HP heater of a 660 MW ultra-supercritical steam turbine unit. Application results prove the model to be accurate, which may serve as reference for similar units.

关 键 词：发电厂 Ⅱ理论 高压加热器 变工况 

分 类 号：TM621.4[电气工程—电力系统及自动化]