Soft measurement method and system for wall temperature of boiler water-cooled wall of thermal generator set

The invention discloses a soft measurement method and system for the wall temperature of a boiler water-cooled wall of a thermal generator set, and belongs to the technical field of boiler safety, and the method comprises the steps: building a mathematical mechanism model of the wall temperature of the boiler water-cooled wall, and carrying out the real-time calculation of the wall temperature of the boiler water-cooled wall based on the mathematical mechanism model, and obtaining a calculation value; according to the actually measured data, the wall temperature of the boiler water wall is predicted in real time based on a machine learning algorithm to obtain a predicted value; and a comprehensive prediction function is constructed based on the calculated value and the predicted value, the calculated value is updated in real time, and when the time is larger than a first threshold value or the variation of the actually measured data is larger than a second threshold value, the predicted value is updated to ob