Boiler group combustion control method and device based on big data

The invention relates to a boiler group combustion control method and device based on big data, and the method comprises the steps: obtaining the characteristic parameter historical data of at least two boilers, and obtaining the characteristic parameter historical data of a boiler group; adopting a big data analysis processing framework to mine historical data of characteristic parameters of the boiler group, and obtaining a combustion control fitting model of the relation between the coal feeding amount of a coal feeder of the boiler group and the operation load, the heat efficiency and the wear speed; according to the combustion control fitting model, a combustion furnace database of the corresponding relation between the coal feeding amount of the coal feeder of the boiler set and the operation load, the heat efficiency and the abrasion speed is established; presetting a combustion control target of the boiler group, traversing the combustion furnace database to perform combustion control optimization of