Water spraying desuperheater water spraying adjustment method and device based on neural network model

Abstract

The invention discloses a water spraying desuperheater water spraying adjustment method and device based on a neural network model, and the method comprises the steps: obtaining the current overheating parameter data of a superheater in a thermal power boiler, and obtaining the current water spray parameter data of a water spray desuperheater in the thermal power boiler; normalizing the current overheating parameter data and the current water spraying parameter data respectively; constructing a data feature matrix by utilizing the normalized current overheating parameter data and the normalized current water spraying parameter data; inputting the data feature matrix into a trained convergent neural network model to correct and predict the water spraying amount of the thermal power boiler water spraying desuperheater to obtain a corrected and predicted result; and enabling the thermal power boiler water spray desuperheater to perform water spray adjustment according to the correction prediction result. According to the embodiment of the invention, real-time correction and prediction of the water spraying amount of the water spraying desuperheater in the thermal power boiler can be realized, so that the heat and pressure of steam output by the superheater are within a preset range, and the operation efficiency of the thermal power boiler is guaranteed.

Description

technical field [0001] The invention relates to the technical field of water spray adjustment of a water spray desuperheater for thermal power generation, in particular to a method and device for adjusting water spray of a water spray desuperheater based on a neural network model. Background technique [0002] Boiler water spray desuperheating system is indispensable in large-scale thermal power units. Its function is to adjust, cool down or depressurize the overheated and large-flow steam flowing through the boiler; it is an important guarantee for the safe operation of boilers and steam turbines, so that the temperature of steam entering the steam turbine Within the normal operation requirements of the unit; when the operating condition of the unit changes suddenly, especially when the steam turbine unit undergoes rapid load shedding (FCB), the temperature control of the steam generated by the boiler has an important relationship with the coordinated operation of the steam ...

AI Technical Summary

Problems solved by technology

[0002] Boiler water spray desuperheating system is indispensable in large-scale thermal power units. Its function is to adjust, cool down or depressurize the overheated and large-flow steam flowing through the boiler; it is an important guarantee for the safe operation of boilers and steam turbines, so that the temperature of steam entering the steam turbine Within the normal operation requirements of the unit; when the operating condition of the unit changes suddenly, especially when the steam turbine unit undergoes rapid load shedding (FCB), the temperature control of the steam generated by the boiler has an important relationship with the coordinated operation of the steam turbine; the existing boiler In the water spray desuperheating system, the water spray adjustment method of the water spray desuperheater still stays after a problem occurs, and the adjustment is made by manual control, which is difficult to achieve real-time adjustment, which may bring safety hazards to Jiaotong University

Images