Characteristics of Upward Leader Emerging From a Single-Phase Conductor With Different Voltage Class

In order to improve the shielding effect of the transmission line, the accurate line system design is significant. The electrogeometric model and leader progression model are two typical and most widely used numerical analysis models to analyze the shielding failure performance. However, both models...

Full description

Saved in:
Bibliographic Details
Published inIEEE transactions on power delivery Vol. 30; no. 4; pp. 1833 - 1842
Main Authors Wang, Xi, Yu, Zhanqing, He, Jinliang, Zeng, Rong
Format Journal Article
LanguageEnglish
Published IEEE 01.08.2015
Subjects
AC transmission line
Conductors
Discharges (electric)
Electric fields
Electrodes
Generators
leader progression model (LPM)
Numerical models
Power transmission lines
simulation experiment
upward leader
Online AccessGet full text

Cover

More Information
Summary:In order to improve the shielding effect of the transmission line, the accurate line system design is significant. The electrogeometric model and leader progression model are two typical and most widely used numerical analysis models to analyze the shielding failure performance. However, both models call for more experimental evidence for accurate application. This paper investigates the characteristics of an upward leader emerging from 110-, 220-, 500-, and 1000-kV single-phase conductors through simulated experiments, and the conductor parameters and heights adopted are similar to the actual transmission lines in operation. The ac voltage generator is connected to the conductor to apply an operating voltage to the conductor. The influence of bundle number and conductor height on the upward leader is also discussed in detail. The obtained characteristics of an upward leader will be helpful to build appropriate numerical analysis models for the shielding failure of the transmission line.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2015.2408320