Title :
Interpretation of the physical mechanisms in the breakdown of long gaps in transformer oil
Author :
Trinh, N.G. ; Saker, A.
Author_Institution :
Inst. de Recherche, Hydro-Quebec, Varennes, Que., Canada
Abstract :
The breakdown of nonuniform field gaps in transformer oil was investigated under AC voltages. It was observed to occur either directly following the initiation of a discharge (direct mode) or after a succession of suppressions and reignitions of the discharge over several consecutive half-cycles of the applied voltage (delayed mode). The paper presents time-resolved observations of the discharge and offers an interpretation of its progression mechanism leading to breakdown of the gap
Keywords :
electric breakdown; transformer oil; AC voltage; breakdown; delayed mode; direct mode; discharge; nonuniform field gap; time-resolved diagnostics; transformer oil; Breakdown voltage; Delay; Electric breakdown; Electrodes; Fault location; Oil insulation; Petroleum; Power transformer insulation; Power transformers; Testing;
Conference_Titel :
Conduction and Breakdown in Dielectric Liquids, 1996, ICDL '96., 12th International Conference on
Conference_Location :
Roma
Print_ISBN :
0-7803-3560-0
DOI :
10.1109/ICDL.1996.565475
