Soft-Sensing for Feedwater Flowrate Using a GMDH Algorithm

Now that thermal reactor power is typically assessed by secondary system calorimetric calculations based on the accurate measurement of feedwater flow rate, it is very necessary to exactly measure the feedwater flowrate. In most pressurized water reactors, Venturi meters are used to take the measurement of the feedwater flowrate. But the fouling phenomena of the Venturi meter make the accuracy of the existing hardware sensors worse. Consequently, it is essential to resolve the inaccurate measurement issue of the feedwater flowrate. In this study, In order to precisely estimate online the feedwater flowrate, a soft sensing model for feedwater flowrate monitoring is developed by using the Group Method of Data Handling (GMDH) Algorithm