The Exhaust Steam Enthalpy of Steam Turbine Cognitive Modeling Based on Simplify Evidential Regression Multi-Model
Sha Liu, Peihong Wang, Zhi Gang Su · Advanced materials research · 2012
The calculation of exhaust steam enthalpy for steam turbine units is an important parameter in the on-line monitoring and system analysis for thermal power plants. The cognitive modeling method for exhaust steam enthalpy based on evidence theory was studied in this paper. Take 330MW steam turbine for example, exhaust steam enthalpy samples are obtained from steam turbine variable condition analysis model, then exhaust steam enthalpy cognitive model based on simplify evidential regression multi-model is established. The error analysis shows that the accuracy of this model has higher prediction accuracy than the SVM and NW soft measurement model.