Electric field analysis of water drop corona

Author

Guan, Zhicheng ; Wang, Liming ; Yang, Bo ; Liang, Xidong ; Li, Zhi

Author_Institution

Dept. of Electr. Eng., Tsinghua Univ., Beijing, China

Volume

20

Issue

2

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

964

Lastpage

969

Abstract

Water drops on surface of polymer insulation materials may cause corona because they can enhance the electric field nearby. Water drop corona plays an important negative role in the long-term performance of composite insulators. In this paper, based on a model with two parallel electrodes water drop corona is studied. The relationship between initial corona voltage and different sets of water drops is obtained from experiments. Then several factors, which may affect the electric field analysis of water drop corona, are studied by numerical calculation on computer. Calculation is mainly on a 2-D model. However, a 3-D model is also used to study the effect of water drops distributed in space.

Keywords

composite insulators; corona; electric fields; electrical engineering computing; numerical analysis; polymer insulators; composite insulators; electric field analysis; numerical analysis; parallel electrodes; polymer insulation materials; water drop corona; Aging; Corona; Degradation; Dielectrics and electrical insulation; Polymers; Power system analysis computing; Power system modeling; Surface discharges; Voltage; Water pollution; Composite insulation; corona; electric fields; numerical analysis;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2004.837672

Filename

1413340