Field examining and repairing for  rotor’s short circuit and localization of generator on oilgas platform

SUN Lin2，LIU Quanen2，ZHANG Fengshan1，LI Yi1，   LUO Feng1，ZUO Jun1，WANG Daan1
（1.CNOOC Ltd., Tianjin 300452，China; 2.Bohai Equipment & Technique Services
Division, Field Construction Engineering Co., Tianjin 300452, China ）

Abstract：：For resolving the serious failure due to the damage of main parts in the large imported generating units on the offshore oil platform， the localization refurbishment of the parts is significant. The form and diagnostic method of turntoturn short circuit on the imported main generator rotor of the offshore oil gas platform were  generalized ，  the localization steps of the choice and winding for generator rotor new coil were  explored preliminary，the generator dynamic balance adjustment process was illustrated after using the new rotor, and the generators running vibrations was obviously decreased. The results show that the research lays a foundation for the deep implementation of imported generator localization.
Key words：import generator; short circuit on rotor; localization of rotor; trim balancing