AN ON-LINE MONITORING METHOD OF THE EXHAUST STEAM DRYNESS IN STEAM TURBINE

摘要：

With the development of information and computer technology, it is possible to monitor and analyze on-line features of large steam turbine-generator units.The energy consumption rate and the exhaust steam dryness are two important indices.Base on the analyses of those existed calculation methods for turbine varying condition, we give a sequential varying condition calculation that starts with steam extraction of the final stage or the second final stage (superheated steam condition).According to the initially assumed final stage flow, and the thermodynamic parameters before the final stage, also the backpressure, we can distinguish the flow patterns of the stage by discriminant criteria.Then we can conduct a stage varying condition calculation of primary stage in sequence from the front final stage parameter, so the new exhaust steam enthalpy and the exhaust steam dryness can be got So the precise energy consumption rate and the exhaust enthalpy (or the dryness) can be got easily.Obviously, without measuring the flow or the dryness, we can accurately monitor the on-line energy consumption rate and the dryness of the units.

关键词： Discriminant criteria of the flow patterns the dryness of the exhaust steam Varying condition calculation On-line Monitoring

作者: CHUN-FA ZHANG NING ZHAO HUI-JIE WANG YA-MI CHEN YI-RAN YAN

作者单位: North China Electric Power University, Baoding 071003, China North China Institute of Science and Technology, Beijing, 101601, China

会议类型: 国际会议

会议名称: 2007 International Conference on Machine Learning and Cybernetics(IEEE第六届机器学习与控制论国际会议)

会议地点: 香港

会议语种:英文

页码: 437-442

在线出版日期: 2007-08-19（万方平台首次上网日期，不代表论文的发表时间）