Title :
Space charge evolution in dilute binary electrolytes exposed to HV transients
Author :
Spencer, Donald B. ; Pedrow, Patrick D. ; Olsen, Robert G. ; Barbosa-Canovas, Gustavo V. ; Swanson, Barry G.
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Washington State Univ., Pullman, WA, USA
fDate :
12/1/1996 12:00:00 AM
Abstract :
Dilute solutions of KCl were investigated with HV transients to determine the effects of electrode reactions on the voltage-current relationship. The resistance seen by the external circuit under transient conditions was a function of bulk conduction processes and space charge near the electrodes. The bulk conductivity of KCl, described by a set of coupled first order differential equations, was reduced to a thermally varying conductivity model. The variation of conductivity with temperature was small enough that space charge effects could be measured. A forced diffusion model was developed to describe the electrode processes with an applied transient voltage and constant temperature
Keywords :
dielectric liquids; dissociation; electric breakdown; electrolytes; space charge; HV transients; KCl; applied transient voltage; bulk conduction processes; constant temperature; coupled first order differential equations; dilute binary electrolytes; electrode processes; electrode reactions; forced diffusion model; space charge evolution; thermally varying conductivity model; voltage-current relationship; Conductivity measurement; Coupling circuits; Current measurement; Differential equations; Electrodes; Kirchhoff´s Law; Space charge; Temperature; Thermal conductivity; Voltage;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
