Title :
Failure of a big transformer in HPP — Assessment of damage, repair and tests
Author :
Bojkovic, Aleksandar ; Gucic, Dragomir ; Nikolic, Petar ; Petrovic, Bogosav
Author_Institution :
Electr. Eng. Inst. Nikola Tesla, Belgrade
Abstract :
The authors present the case of a big three phase generator step-up transformer with three windings and five leg core, from its failure and diagnosis of damage up to repair on site and tests to prove the quality of work, including first preventive tests after its return in operation.
Keywords :
fault diagnosis; power transformers; transformer windings; HPP; damage assessment; failure diagnosis; phase generator; step-up transformer; transformer failure; windings; Capacitance; Displacement measurement; Dissolved gas analysis; IEC standards; Low voltage; Oil insulation; Petroleum; Power transformer insulation; Power transformers; Testing; Fault diagnosis; Moisture measurement; Power transformer; Power transformer insulation testing; Repair; Windings;
Conference_Titel :
Condition Monitoring and Diagnosis, 2008. CMD 2008. International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-1621-9
Electronic_ISBN :
978-1-4244-1622-6
DOI :
10.1109/CMD.2008.4580288
