Abstract: devices，a remote operation and maintenance control method of power equipment based on industrial large model is proposed to meet the needs of remote monitoring of power equipment and intelligent transformation of operation and maintenance system. Firstly，based on the industrial model，the remote operation and maintenance control system architecture of power equipment based on‘cloud-edge-end’collaboration is designed，and the functional boundaries and interaction modes of each layer are defined. Secondly，the key methods of remote operation and maintenance are analyzed from the aspects of multi-modal data governance， equipment fault diagnosis method，operation and maintenance decision-making and security execution mechanism. Finally，the 110 kV substation group in a certain area is taken as the object to verify. The results show that the method is superior to other methods in fault diagnosis accuracy and scheme availability. The end-to-end average time consumption meets the real-time requirements of the project，which can provide a feasible technical path for the evolution of remote operation and maintenance of power equipment from automation to autonomy.