| The temperature of the rotor core and the rotor winding of a 10000kWgenerator, have exceeded to mark for a long period. The life of insulating material of rotor winding and the safety of generator operation are serious threaten, which is happen in Shizitan power plant of Changshou. This paper emphasizes wind road and analysis cooling calculation. The temperature rise is also calculated. It has important actual value for finding out the reason of too high temperature of rotor, reducing the operation temperature of rotor winding and rotor core, and improving the reliability of the operation of generator.In this paper, the mathematics model of generator and the simulation model of generator system are established on the foundation of the wastage of generator having been discussed in detail. According to actual operation condition of Shizitan power plant of Changshou, the wastage of generator and the operation state of generator are analyzed by using MATLAB software. The scattered hot road model of stator and rotor are established. According to ventilation way and the specific structure of generator, the temperature rise of each parts of generator on specified operation are analyzed by using equivalent hot road model. Because of high temperature rise of generator, the mix ventilation cooling system to improve the temperature rise of generator was adopted. According to the improved ventilation cooling system, stator and rotor hot road are calculated and analyzed. The results of calculation have verified the improved scheme. It has important reference values for the technical improvement of this unit. At the same time, the generator system model for calculation and simulation, the generator equivalent hot road model, which have been established in this paper also have important reference values for other generators.
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