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A Numerical Model of Investigating the Electric Field in Dielectric Liquid
Faculty
Science
Year:
2010
Type of Publication:
InProcceding
Pages:
Authors:
Talaat, M, El-Zein, A
Journal:
IEEE
Volume:
Research Area:
Engineering
ISSN
ISI:000286988200073
Keywords :
Electrical Field Simulation, Streamer Formation, Composed Dielectric, Finite Element Method, Sphere-to-Plane Configuration, Bubble Streamer Initiation
Abstract:
The initial filamentary streamers in liquid dielectrics drastically changes by the tip curvature of the electrode and the applied voltage. In this paper to get the non uniform field a sphere-to-plane electrodes configuration is used. Also, an immersed air bubble adjacent to the sphere electrode is presented, to obtain the sharp tip, after the air bubble compressed against the sphere electrode i.e., sharp conducting protrusion tip, which considered as a source of high non-uniform field and streamer initiation. A simulation model for field distribution in the dielectric medium is presented by using Finite Element Method. An experimental technique was used to investigate the accuracy of the field simulation. Also an analytical equation for field calculation was used to investigate the percentage field error.
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