Calculation of electric field and potential distribution along nonceramic insulators considering the effects of conductors and transmission towers

Author

Zhao, Tiebin ; Comber, Michael G.

Author_Institution

Hubbell Power Syst., Ohio Brass Co., Wadsworth, OH, USA

Volume

15

Issue

1

fYear

2000

fDate

1/1/2000 12:00:00 AM

Firstpage

313

Lastpage

318

Abstract

Calculation of the electric field and potential distribution is extensively performed in the design and development of nonceramic insulators for high voltage transmission applications. This paper applies a two-dimensional (2-D) and a three-dimensional (3-D) electric field analysis program to calculate the field distribution of the insulators under clean and dry conditions. A three-phase 345 kV transmission tower with nonceramic suspension insulators (two I-strings and one V-string) was analyzed with each phase as an individual case. The effects of conductors, tower configurations and grading devices on the electric field and potential distribution along the insulators were investigated. The calculation results show that the factors investigated have different levels of effects on the distribution

Keywords

electric fields; insulators; overhead line conductors; poles and towers; power overhead lines; 2-D electric field analysis program; 3-D electric field analysis program; 345 kV; I-strings; V-string; clean conditions; conductors; dry conditions; electric field; grading devices; high voltage transmission applications; nonceramic insulators; nonceramic suspension insulators; potential distribution; three-phase transmission tower; tower configurations; transmission towers; Conductors; Corona; Dielectrics and electrical insulation; Electric potential; Geometry; Manufacturing; Poles and towers; Power transformer insulation; Power transmission lines; Voltage;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.847268

Filename

847268