Title :
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
fDate :
8/1/1988 12:00:00 AM
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;
Journal_Title :
Electrical Insulation, IEEE Transactions on
