An analysis of the overvoltage in the secondary network, considering a transient grounding resistance.

Author

Mustafa, Thair I A H ; Almaguer, Hugo D. ; Almeida, Nabi M. ; Meyer, Luiz H. ; Tello, Marcos

Author_Institution

Dept. of Electr. & Commun. Eng., Univ. of Blumenau -FURB, Blumenau, Brazil

fYear

2010

fDate

12-16 April 2010

Firstpage

1506

Lastpage

1509

Abstract

This work presents an analysis of the overvoltage in the secondary network caused by lightning discharges that are transferred from the primary through the transformer. Numerical simulations using TLM- Transmission Line Modeling and ATP- Alternative Transients Program are presented to show and to establish comparisons between two models for the grounding resistance of the transformer and customer: the traditional model with constant resistance and the model proposed in this work, considering a transient resistance.

Keywords

contact resistance; earthing; numerical analysis; overvoltage protection; power distribution protection; power supply quality; power transformers; transient analysis; alternative transient program; constant resistance; electric power distribution networks; lightning discharges; numerical simulations; overvoltage analysis; power supply quality; secondary network; transformer; transient grounding resistance; transmission line modeling; Electric resistance; Electromagnetic transients; Grounding; Lightning; Power system transients; Soil; Steady-state; Topology; Transient analysis; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility (APEMC), 2010 Asia-Pacific Symposium on

Conference_Location

Beijing

Print_ISBN

978-1-4244-5621-5

Type

conf

DOI

10.1109/APEMC.2010.5475780

Filename

5475780