Open-loop combustion control optimization method for coal-fired boiler
A technology of coal-fired boilers and optimization methods, applied in the directions of control combustion, program control, and comprehensive factory control, can solve the problems of unknown safety risks and differences in the recommended adjustment plan, achieve economic and social benefits, and reduce the number of grids , the optimal effect of mutual coordination of emissions
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Embodiment 1
[0033] see figure 1 , a coal-fired boiler open-loop combustion control optimization method of the present invention, comprising the following steps:
[0034] S1. Divide different load segments according to ultra-low load, low load, medium load and high load conditions, establish an expert database by classification, and use unit load, coal low-level calorific value, ambient temperature and different coal mill combinations to characterize boiler combustion The basic state is used as a clustering factor to establish an expert database grid, and the historical data of the unit is used to initialize the expert database; among them, for each clustering factor representing the basic state of boiler combustion, the step size is set separately, divided into several intervals, and a multi-dimensional network is formed grid;
[0035] S2, design the manual intervention / automatic mode, read the operating parameters and mode status of the boiler combustion unit in real time, perform data ...
Embodiment 2
[0039] The difference between the coal-fired boiler open-loop combustion control optimization method of this embodiment and Embodiment 1 is that in step S2, the operating data and manual intervention / automatic mode status of the boiler combustion are read in real time, and the real-time data is collected. Cleaning, that is, judging whether the data has missing values, sudden increases and sudden decreases, and exceeds the upper and lower limits. If it is normal, go to step S2-1; cleaning;
[0040] Step S2-1: Analyze and process the real-time data of boiler operation to determine whether the current boiler combustion meets the steady-state working conditions. If it does not meet the steady-state working conditions, perform step S2-2 to push the unsteady-state experience. If it meets, go to Step S2-3;
[0041] Step S2-2: When using the two clustering factors of unit load and different coal mill combinations to characterize the unsteady working conditions, several grids of the cor...
Embodiment 3
[0051] This embodiment takes the boiler combustion system of a certain 1000MW coal-fired unit as an example to specifically illustrate the specific implementation process of the open-loop combustion control optimization method for a coal-fired boiler of the present invention, as follows: figure 1 As shown, its process includes:
[0052] Step 1: Divide different load segments according to ultra-low load, low load, medium load and high load conditions, establish an expert database by classification, and use unit load, low coal-fired calorific value, ambient temperature and different coal mill combinations to characterize the boiler The basic state of combustion is used as a clustering factor to establish an expert database grid, with a total of 67,815 grids, and the historical data of relevant units is collected to initialize the expert database, such as figure 2 shown. According to the grid framework of the above-mentioned expert database, a database management system, such a...
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