Title :
Flow electrification in power transformers. Explanation of the wall-current measurements
Author :
Touchard, G. ; Grimaud, P.O. ; Romat, H. ; Moreau, O.
Author_Institution :
Lab. de Phys. et Mecanique des Fluides, CNRS, Poitiers, France
fDate :
8/1/1994 12:00:00 AM
Abstract :
The aim of our work is to understand better the mechanisms of flow electrification due to oil circulating inside a rectangular pressboard channel. This research has been done because of technical incidents in power transformers in which oil is flowing past pressboard with a velocity in the range of several meters per second. A possible explanation of the wall current observed along the channel is proposed
Keywords :
flow; insulating oils; power transformers; static electrification; transformer insulation; circulating oil; flow electrification; power transformers; rectangular pressboard channel; wall-current measurements; Coatings; Ducts; Electrical equipment industry; Geometry; Oil insulation; Petroleum; Power measurement; Power transformer insulation; Power transformers; Space charge;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
