Typical cases of electric field and voltage distribution calculations along polymer insulators under various wet surface conditions

Author

Que, Weiguo ; Sebo, Stephen A.

Author_Institution

Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA

fYear

2002

fDate

2002

Firstpage

840

Lastpage

843

Abstract

The electric field and voltage distributions along wet polymer insulators are calculated using COULOMB, a three-dimensional electric field analysis software package. These distributions are distorted by the presence of water droplets on the surface of the insulators. The cases analyzed are based on several stages of the hydrophobicity classification (HC) recommended by the Swedish Transmission Research Institute (STRI). The models developed for the calculations are based on photographs of insulators undergoing aging tests in a fog chamber. The insulator surfaces of the cases selected for the calculations are characterized as HC1, HC2 and HC3. Electric field and equipotential lines and electric field enhancement factors on the surface of water droplets are presented.

Keywords

electric fields; polymer insulators; voltage distribution; 3D electric field analysis software package; aging tests; electric field distribution; equipotential lines; field enhancement factors; polymer insulators; voltage distribution; water droplets; wet surface conditions; Aging; Computer aided software engineering; Corona; Dielectrics and electrical insulation; Plastic insulation; Polymers; Surface contamination; Surface discharges; Voltage; Water pollution;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 2002 Annual Report Conference on

Print_ISBN

0-7803-7502-5

Type

conf

DOI

10.1109/CEIDP.2002.1048926

Filename

1048926