Title :
Recovery of generator insulation
Author :
Coirolo, Alejandro
Author_Institution :
Dept. of Electr. Maintenance, Thermal Power Plants - UTE, Montevideo, Uruguay
Abstract :
During 1992, a thermal power plant in Montevideo burnt in an accident, which caused great damage in Turbine Number Five (88 MVA) and Number Six (156 MVA). The worst damage took place in Turbine 6, Turbine 5 was only affected by the smoke resultant of burning cables. During the repair of Unit 5, one of the most important tasks was to change the retaining rings of the generator rotor. When we took out the rotor and the old retaining rings, we inspected both stators and rotors, finding a lot of problems. This paper deals with the description of all the tasks done and how we managed to repair the generator of Unit 5, which is a critical backup for Montevideo´s electric system
Keywords :
accidents; machine insulation; maintenance engineering; rotors; stators; thermal power stations; turbogenerators; 156 MVA; 88 MVA; Montevideo; accident; generator insulation recovery; generator repair; generator rotor; retaining rings; thermal power plant; Bars; Inspection; Insulation; Lamination; Personnel; Power generation; Rotors; Stator cores; Stator windings; Turbines;
Conference_Titel :
Electrical Insulation, 1998. Conference Record of the 1998 IEEE International Symposium on
Conference_Location :
Arlington, VA
Print_ISBN :
0-7803-4927-X
DOI :
10.1109/ELINSL.1998.704725
