Title :
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
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;
Conference_Titel :
Electromagnetic Compatibility (APEMC), 2010 Asia-Pacific Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-5621-5
DOI :
10.1109/APEMC.2010.5475780
