Title :
Charge and voltage characteristics of corona discharges in a coaxial geometry
Author_Institution :
Inst. of High Voltage Res.., Uppsala Univ., Sweden
fDate :
12/1/2000 12:00:00 AM
Abstract :
An engineering model is proposed to evaluate the variation of corona charge and corona current as a function of applied voltage for coaxial geometry (q-v curves). The two main assumptions of the model are the following: for streamer discharges to propagate continuously, the background field must be at, or just above, a critical level; and the streamers maintain a constant voltage gradient in the corona sheath. The model simulations are compared with the experimental q-v curves and a reasonable agreement is obtained between them
Keywords :
corona; electrodes; space charge; background field; charge characteristics; coaxial geometry; constant voltage gradient; corona current; corona discharges; critical level; engineering model; model simulations; streamer discharges; voltage characteristics; Coaxial components; Conductors; Corona; Current measurement; Electrodes; Equations; Geometry; Predictive models; Solid modeling; Voltage;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
