Abstract:Based on the heat transfer model of the generator stator bars, the three-dimensional temperature field distribution of the generator stator bar is analyzed in the finite element method．As the object of study, the lower bar of one 600 MW generator stator is analyzed to obtain the temperature distribution when the hollow strands are partly blocked． The results show that when the hollow strands are blocked, the stator bar’s temperature distribution is affected to different extents．With the blockage coefficient increasing, the temperature of the stator bar rises when one hollow strand is partly blocked．