Title :
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
fDate :
1/1/2000 12:00:00 AM
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;
Journal_Title :
Power Delivery, IEEE Transactions on
