数据协调在燃气-蒸汽联合循环机组汽轮机排汽焓计算中的应用  

Application of Data Rectification in Calculation of Steam Turbine Exhaust Enthalpy in a Gas-Steam Combined Cycle Unit

作　　者：张浩峰 胥建群[1] 黄喜军[1] 陈晓欣 皇甫泽玉 Zhang Haofeng;Xu Jianqun;Huang Xijun;Chen Xiaoxin;Huangfu Zeyu(Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education,Southeast University,Nanjing 210096,China)

机构地区：[1]东南大学能源热转换及其过程测控教育部重点实验室

出　　处：《发电设备》2019年第5期297-303,共7页Power Equipment

摘　　要：以某联合循环蒸汽轮机侧为研究对象,基于不同的测量仪表精度,通过数据协调对测量数据进行处理,提出了功率法和凝汽器循环冷却水质量流量法计算排汽焓。结果表明:数据协调能有效提高测量数据精度,凝结水质量流量的标准偏差从2.460t/h降低到0.775t/h;排汽焓的计算精度与测量仪表精度有关,功率法比循环冷却水质量流量法计算得到的排汽焓精度要高,且比较稳定。Taking the steam turbine in a combined cycle unit as an object of study,the power method and the circulating cooling water mass flow method were proposed for the calculation of exhaust enthalpy by processing the measured data through data rectification based on the precision of different measuring instruments.Results show that data rectification can effectively improve the measurement accuracy,which helps to reduce the standard deviation of condensate mass flow from 2.460 t/h to 0.775 t/h.The calculation precision of exhaust enthalpy is related to the measurement precision of relative instruments,and the exhaust enthalpy calculated by the power method is more accurate and stable than that by the circulating cooling water mass flow method.

关 键 词：数据协调 联合循环 汽轮机 排汽焓 

分 类 号：TM611.31[电气工程—电力系统及自动化] TK262[动力工程及工程热物理—动力机械及工程]