Intelligent Boiler Combustion Stability Judgment System and Method Applicable to Large Power Stations

Abstract

The present invention discloses a system and a method for intelligent boiler combustion stability determination suitable for a large-scale power station. A data collection module is configured to collect coal quality component data from an MIS (Management Information System), collect boiler operation state data from a DCS (Distribute Control System), and transmit the coal quality component data and the boiler operation state data to a data processing module; the data processing module is configured to determine whether received parameters are in corresponding preset threshold ranges or not, reject the data exceeding the corresponding preset threshold ranges, calculate a characteristic quantity according to the data in the corresponding preset threshold ranges and transmit a determination result and the characteristic quantity to a data decision module; and the data decision module is configured to calculate a dimensionless combustion stability analysis criterion in an actual operationstate according to the received characteristic quantity, compare the dimensionless combustion stability analysis criterion in the actual operation state with a set dimensionless combustion stability analysis criterion critical value, and determine whether the boiler combustion is stable or not. The system and the method for intelligent boiler combustion stability determination perform determination of the combustion stabilization condition of the boiler in real time according to the boiler operation state, and are suitable for determination of a low-load combustion stabilization condition.

Description

technical field [0001] The invention belongs to the technical field of power station boilers, and in particular relates to an intelligent boiler combustion stability judging system and method suitable for large-scale power stations. Background technique [0002] At present, my country's power industry certification is showing a new situation. The capacity of the power grid is continuously increasing. The UHV power grid is gradually being built and the proportion of new energy is rapidly increasing. The pressure on the power grid to accommodate renewable energy and external power transmission has increased significantly; In addition, the structure of electricity consumption has also undergone significant changes—the proportion of residential electricity consumption has increased and the proportion of industrial electricity consumption has decreased, making the peak-to-valley load difference of the power grid show a trend of increasing. As a result, the power system is facing i...

AI Technical Summary

Problems solved by technology

It is not difficult to see from the above two patents that the method for judging the flame stability is to process and analyze the flame image, and then use mathematical tools to process and judge the combustion stability. Larger errors and uncertainties, so the uncertainty and errors of the starting point, even if the subsequent mathematical processing is more accurate, it is difficult to accurately or even quantify the stability of combustion

[0007] Through the above analysis, it can be seen that the current judgment on the stable combustion of boilers is basically based on artificial and qualitative judgments, with large errors and many human factors. Different technicians have different scales and standards. However, due to the flame image processing There are large errors in mathematical analysis and it is difficult to accurately and quantitatively judge the stability of combustion

Images