Title :
Investigations in order to improve the E.C.T. measurement protocol of large power transformer oil
Author :
Mas, P. ; Paillat, T. ; Touchard, G. ; Moreau, O.
Author_Institution :
Poitiers Univ., France
Abstract :
The streaming electrification in oil-immersed transformers is the cause of some failures in all the countries of the world. Thus, it is necessary to have reliable servicing and checking tools in order to perform steady and reproducible measurements. One investigation method consists of studying the oil/pressboard couples [Touchard G., and al. 1999]. Another method consists of improving the protocol used for electric characterization of the oil (mainly the protocol combined with the Ministatic Tester). This paper explains an enhancement of this measurement protocol
Keywords :
charge measurement; insulation testing; power transformer insulation; static electrification; transformer oil; ECT measurement protocol; electrostatic charging tendency; large power transformers; ministatic tester; oil-immersed transformers; power transformer oil; reproducible measurements; streaming electrification; Current measurement; Filters; Lubricating oils; Oil insulation; Petroleum; Pollution measurement; Power measurement; Power transformers; Protocols; Testing;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2000 Annual Report Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-6413-9
DOI :
10.1109/CEIDP.2000.885228
