Lightning induced overvoltages: effects on consumer service entrance

Author

Silveira, F.H. ; Visacro, S.

Author_Institution

Lightning Res. Center, Fed. Univ. of Minas Gerais, Belo Horizonte, Brazil

Volume

1

fYear

2003

fDate

23-26 June 2003

Abstract

This work presents evaluations concerning lightning induced overvoltages on low voltage distribution lines. The results were obtained by simulation, employing an elaborated electromagnetic model. Sensitivity analyses were developed in order to relate the effect of physical characteristics of line to the level of induced overvoltage at consumer service entrance. The influence of several effects was evaluated, comprising shielding promoted by neutral conductor, number of down conductors connecting neutral to the earth, value of grounding impedance of earth terminations, presence of consumer load and line configuration (conventional and multiplexed) on induced overvoltage at consumer service entrance.

Keywords

earthing; lightning; overvoltage; power distribution lines; sensitivity analysis; consumer service entrance; earth terminations; electromagnetic model; grounding impedance; induced overvoltage; lightning induced overvoltages; low voltage distribution lines; neutral conductor; sensitivity analyses; Conductivity; Conductors; Electromagnetic fields; Electromagnetic modeling; Lightning; Low voltage; Optical coupling; Sensitivity analysis; Soil; Surges;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Tech Conference Proceedings, 2003 IEEE Bologna

Print_ISBN

0-7803-7967-5

Type

conf

DOI

10.1109/PTC.2003.1304138

Filename

1304138