With the continuous adjustment of energy structure

the function of depth peak regulation of thermal power plants is increasingly obvious. As an important auxiliary engine of power plants

the dynamo-regulated axial flow fan has a high power consumption rate. Therefore

how to realize high-efficiency and energy-saving operation of the dynamo-regulated axial flow fan under all working conditions is an important subject of current research. Based on comprehensive analysis on the structure characteristics

adjustment principle and current operation status of the rotor blade adjustable axial flow fan

this paper puts forward the intelligent energy-saving operation mode of the rotor blade adjustable axial flow fan under all working conditions. By adopting the intelligent operation method of blade regulation and inverter speed regulation

this mode can fully meet the demand of depth peak regulation in power plants

keep the fan running in high-efficiency area under full working conditions

and realize the maximization of energy saving benefit. Meanwhile

organic combination of intelligent operation and on-line monitoring makes the operation personnel control more convenient. The operation mode proposed in this paper can also be used for over 300 MW thermal power units.