Title :
Electrostatics in Power Transformers
Author :
Shimizu, S. ; Murata, H. ; Honda, M.
Author_Institution :
Toshiba Corporation
fDate :
7/1/1979 12:00:00 AM
Abstract :
In this paper, the streaming electrification in core type forced oil cooled power transformers is investigated, using a full-scale model transformer and various experimental models. It has been clarified that streaming electrification in transformers is influenced mainly by flow rate, oil temperature, surface conditions of insulating materials and characteristics of insulating oil. Electrostatic discharge occurs eventually when the amount of local charge exceeds a certain limit.
Keywords :
Dielectric liquids; Electrostatic discharge; Oil insulation; Petroleum; Power transformer insulation; Power transformers; Solids; Surface charging; Temperature; Transformer cores;
Journal_Title :
Power Apparatus and Systems, IEEE Transactions on
DOI :
10.1109/TPAS.1979.319324
