Combustion air supply control method and device for high-alkali coal in high altitude area

The embodiment of the invention discloses a combustion air supply control method and device for high-alkali coal in a high-altitude area, and relates to the technical field of energy. The method comprises the steps of obtaining an actual load and a target load of a power plant boiler; determining a comprehensive load according to the actual load and the target load, and determining a target air volume according to the comprehensive load; and supplying air to the power plant boiler according to the target air volume to control combustion of the high-alkali coal in the power plant boiler. According to the technical scheme provided by the embodiment of the invention, wind is fixed by load, so that the target wind quantity is irrelevant to fuel quantity change caused by specific fuel property difference, the blending proportion of the high-alkali coal is improved, a non-designed combustion high-alkali coal unit in a high-altitude area can combust the high-alkali coal in a large proportion, the power generation co