Energy-saving reform of power station by image processing expert system and fuzzy control

In view of the continued improvement in image and graphics technology, fuzzy control has its superiority in combustion process control which has many uncertain factors. This paper puts forward a detecting and control technique which combines flame images disposal and experts system based on the situation of flame pictures, and close combines the image processing and fuzzy control in steam turbine generating set's boiler burning unit. For boiler combustion control, the optimum combustion process depends on the ratio of air and fuel (air-coal ratio), and the rational allocation of wind in combustion process and the chamber negative pressure. This paper describes the optimal combustion conditions in the combustion control system by controlling the air-coal ratio, the rational allocation of wind in combustion process and the chamber negative pressure through frequency control under fuzzy control based on the image processing expert system. Through the technique of image detecting, disposal, character pickup, mode identify and so on, with the flame of big multi-layer four-cape burner, it is easy to realize the boosting of combustion efficiency by adopting fuzzy control' technique under certain optimization system capability index. Meanwhile, by adopting speed-adjusted on frequency conversion to the high-power electricity devices during the period of sending breeze, and by giving coal which fulfils the boiler of breeze coal rate, hearth negative pressure and steam-gas enthalpy, the allot of electric energy will be optimized.