I-V characteristics and liquid motion in needle-to-plane and razor blade-to-plane configurations in transformer oil and liquid nitrogen

Author

Takashima, Takeshi ; Hanaoka, Ryoichi ; Ishibashi, Ryota ; Ohtsubo, A.

Author_Institution

Dept. of Electr. Eng., Kanazawa Univ., Japan

Volume

23

Issue

4

fYear

1988

fDate

8/1/1988 12:00:00 AM

Firstpage

645

Lastpage

658

Abstract

Current-voltage (I-V) characteristics are measured in a negative needle-to-plane configuration and a negative razor blade-to-plane configuration in transformer oil and liquid nitrogen. Linear pots of V vs. I¹2/ in the former configuration of V vs. I¹3/ in the latter configuration are obtained respectively in the space-charge limitation (SCL). The liquid motions in the above two configurations in SCL are computed respectively from both the Navier-Stokes equation and the continuity equation by the finite-difference method. From the experimental and computational results of the liquid motions, the relations between V and I in two configurations are derived, respectively.

Keywords

Navier-Stokes equations; electrical conductivity of liquids; electrohydrodynamics; high field effects; insulating oils; nitrogen; space-charge-limited conduction; I-V characteristics; Navier-Stokes equation; continuity equation; finite-difference method; liquid N₂; liquid motion; negative needle-to-plane configuration; negative razor blade-to-plane configuration; space-charge limitation; transformer oil; Current measurement; Dielectric liquids; Dielectrics and electrical insulation; Electrodes; Navier-Stokes equations; Needles; Nitrogen; Oil insulation; Space charge; Voltage;

fLanguage

English

Journal_Title

Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

0018-9367

Type

jour

DOI

10.1109/14.7337

Filename

7337