Title :
Assessment of oil impregnated paper insulated transformers using recovery voltage measurements
Author :
Krivda, A. ; Russell, Gary
Author_Institution :
Powerlink, Qld., Australia
Abstract :
The main objective of this study was to assess the advantages of Direct Current Recovery Voltage Measurements over more conventional techniques for condition monitoring of oil impregnated paper insulated power and instrument transformers. This paper focuses attention on the advantages and precautions that must be observed when applying this technique in a realistic environment. The significance of capacitively graded high voltage insulation and the influence of environmental factors such as humidity and wind on the repeatability of recovery voltage measurements are also discussed
Keywords :
condition monitoring; dielectric measurement; impregnated insulation; instrument transformers; insulation testing; paper; power transformer insulation; power transformer testing; transformer oil; voltage measurement; DC recovery voltage measurement; capacitively graded high voltage insulation; condition monitoring; environmental factor; humidity; instrument transformer; oil impregnated paper; power transformer; transformer insulation; wind; Condition monitoring; Instrument transformers; Insulation testing; Oil insulation; Petroleum; Polarization; Power transformer insulation; Power transformers; System testing; Voltage measurement;
Conference_Titel :
Conduction and Breakdown in Solid Dielectrics, 1998. ICSD '98. Proceedings of the 1998 IEEE 6th International Conference on
Conference_Location :
Vasteras
Print_ISBN :
0-7803-4237-2
DOI :
10.1109/ICSD.1998.709228
