Title :
Investigations into effective methods for assessing the condition of insulation in aged power transformers
Author :
Darveniza, M. ; Saha, T.K. ; Hill, D.J.T. ; Le, T.T.
Author_Institution :
Dept. of Electr. & Comput. Eng., Queensland Univ., Qld., Australia
fDate :
10/1/1998 12:00:00 AM
Abstract :
This paper investigates the effective diagnostic technique(s) for assessing the condition of insulation in aged power transformers. A number of electrical, mechanical and chemical techniques were investigated. Many of these techniques are already used by utility engineers and two comparatively new techniques are proposed in this paper. Results showing the effectiveness of these diagnostics are presented and correlation between the techniques are also presented. Finally, merits and suitability of different techniques are discussed in this paper
Keywords :
ageing; electric breakdown; insulation testing; power transformer insulation; power transformer testing; aged power transformers; chemical techniques; diagnostics; electrical techniques; insulation condition assessment; mechanical techniques; Aging; Chemical analysis; Dielectric loss measurement; Dielectrics and electrical insulation; Insulation testing; Oil insulation; Partial discharges; Petroleum; Power transformer insulation; Power transformers;
Journal_Title :
Power Delivery, IEEE Transactions on
