Title :
Continuous, online monitoring of freestanding, oil-filled current transformers to predict imminent failure
Author :
Cummings, Harold B. ; Boyle, John R. ; Arp, Barry W.
Author_Institution :
Tennessee Valley Authority, Chattanooga, TN, USA
fDate :
10/1/1988 12:00:00 AM
Abstract :
A power-factor-monitoring scheme used successfully to predict catastrophic failures of current transformers on the Tennessee Valley Authority´s system is discussed. The method permits removal of the equipment from service before a failure occurs. Other monitoring and relaying schemes have also been evaluated, and the results are compared
Keywords :
automatic test equipment; current transformers; failure analysis; insulating oils; transformer insulation; Tennessee Valley Authority; failure prediction; freestanding oil-filled current transformers; power-factor-monitoring scheme; Capacitance; Condition monitoring; Current transformers; Gases; Personnel; Petroleum; Power measurement; Power transformer insulation; Reactive power; Testing;
Journal_Title :
Power Delivery, IEEE Transactions on
