Title :
Dielectric frequency response measurement as a tool for troubleshooting insulation power factor problems
Author :
Perkins, Mark ; Fazlagic, Asim ; Frimpong, George
Author_Institution :
ABB Inc., St. Louis, MO, USA
Abstract :
This paper presents a new method of evaluating the dielectric frequency response (DFR) test for troubleshooting and identifying the cause of high or unusual insulation power factor test results. The method involves preparing a dielectric frequency response signature (DFRS) from the DFR test on a transformer. The signature of the measured response is then compared with a modeled response of a transformer with a "normal" insulation structure and a library of signatures of known defects. Based on this comparison, it is possible to diagnose power factor defects in the insulation structure of the transformer under test
Keywords :
dielectric measurement; electric breakdown; frequency response; insulation testing; power factor; power transformer insulation; power transformer testing; dielectric frequency response measurement; dielectric frequency response signature; insulation power factor troubleshooting; insulation structure; power factor defects diagnosis; power transformer insulation testing; Dielectric measurements; Dielectrics and electrical insulation; Frequency measurement; Frequency response; Insulation testing; Oil insulation; Power measurement; Power transformer insulation; Power transformers; Reactive power;
Conference_Titel :
Electrical Insulation, 2002. Conference Record of the 2002 IEEE International Symposium on
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-7337-5
DOI :
10.1109/ELINSL.2002.995903
