With the promotion of on-line monitoring technologies for substation equipment

the on-line infrared temperature monitor will be widely used in condition-based maintenance of electric equipment.This paper proposes a three-dimensional real-time temperature display method of electrical equipment

which combines 3DMax modeling and real-time temperature interpolation.With this method maintenance personnel can obtain the real-time heating status of power equipment in operation

and evaluate equipment state more effectively

thus efficient condition-based maintenance of the equipment can be realized.Simulation results show that this method is of simple calculation and easy implementation

and the temperature distribution of equipment model highly consists with the actual temperature.