Title :
Power transformer loading studies considering overexcitation
Author :
Castro, Carlos R T ; Barbosa, Sérgio R. ; Ferreira, Helder L. ; Samico, Luis E. ; Lopes, Ivan J S ; Silva, Selênio R.
Author_Institution :
Power Transformers Div., Toshiba Brazil, Brazil
Abstract :
The paper addresses the problem of transformer loading calculations considering overexcited transformer operation. General aspects of the current loading guides are presented and discussed on the light of the transformer design characteristics. Overexcitation and its impact on the loading conditions are discussed. A loading calculation method is proposed, and a database consisting of around 50 power transformers real test data is used to analyze the overexcitation problem and its impact on the insulation transformer life expectancy.
Keywords :
life testing; overvoltage; power transformer insulation; power transformer testing; insulation transformer life expectancy; loading calculation method; overexcited transformer operation; performance characteristics; power transformer; real test data; transformer design characteristics; transformer loading calculation; Databases; Guidelines; Insulation life; Insulation testing; Life testing; Oil insulation; Power transformer insulation; Power transformers; Temperature; Voltage control;
Conference_Titel :
Transmission and Distribution Conference and Exposition: Latin America, 2004 IEEE/PES
Print_ISBN :
0-7803-8775-9
DOI :
10.1109/TDC.2004.1432456
