A real-time model based on least squares support vector machines and output bias update for the prediction of NOx emission from coal-fired power plant

作者：Ahmed Faisal; Cho Hyun Jun; Kim Jin Kuk; Seong Noh Uk; Yeo Yeong Koo^*

来源：Korean Journal of Chemical Engineering, 2015, 32(6): 1029-1036.

DOI：10.1007/s11814-014-0301-2

• NOx Prediction
• Real-time Model
• Least Squares Support Vector Machine
• Partial Least Squares
• Output Bias Update

The accurate and reliable real-time estimation of NOx emission is indispensable for the implementation of successful control and optimization of NOx emission from a coal-fired power plant. We apply a real-time update scheme to least squares support vector machines (LSSVM) to build a real-time version for real-time prediction of NOx. Incorporation of LSSVM in the update scheme enhances its generalization ability for long-term predictions. The proposed real-time model based on LSSVM (LSSVM-scheme) is applied to NOx emission process data from a coal-fired power plant in Korea to compare the prediction performance of NOx emission with real-time model based on partial least squares (PLS-scheme). Prediction results show that LSSVM-scheme predicts robustly for a long passage of time with higher accuracy in comparison with PLS-scheme. We also present a user friendly and sophisticated graphical user interface to enhance the convenience to approach the features of real-time LSSVM-scheme.

• 出版日期2015-6