Title :
Interpretation of recovery voltage measurements on power transformers
Author :
van Bolhuis, Jan Peter ; Gulski, Edward ; Smit, Johan J. ; Urbani, Giuseppe M.
Author_Institution :
Delft Univ. of Technol., Netherlands
Abstract :
Using recovery voltage measurements (RVM) on full scale objects, the influence of load history on the condition of the paper insulation of a transformer is investigated. It is shown that the presence of large local area´s of insulating paper with a different ageing conditions can be detected in the polarization spectrum. Also the importance of knowing external conditions when interpreting the measurements is demonstrated
Keywords :
power transformer insulation; ageing conditions; external conditions; insulating paper; insulation breakdown testing; load history; paper insulation condition; polarization spectrum; power transformers; recovery voltage measurements interpretation;
Conference_Titel :
High Voltage Engineering, 1999. Eleventh International Symposium on (Conf. Publ. No. 467)
Conference_Location :
London
Print_ISBN :
0-85296-719-5
DOI :
10.1049/cp:19990515
