Original scientific paper
Experience of Tyco & Antamina in the Lightning Performance and Reliability Improvement of 220 kV Transmission Lines in Peru
Jorge Luiz De Franco
; Franco Engenharia / Tyco Electronics - Brazil
Craig Sutton
; Tyco Electronics - UK
Carlos Riva
; Tyco Electronics - Peru
Jorge Tuesta Rivera
; Cia. Minera Antamina - Peru
Jose Francisco Montes
; Cia. Minera Antamina - Peru
Wilson Alonzo
; Cia. Minera Antamina - Peru
Mussolini Tarazona
; Cia. Minera Antamina - Peru
Manuel Contreras
; AB Technology - Peru
Abstract
The Antamina Mine is located in the Antamina valley in the Andes Mountains in the Ancash region of
north-central Peru, approximately 270 kilometers north of Lima, Peru. Antamina Mine operations
began in late 2001, with an estimated mine life of more than 20 years. The deposit is one of the largest
copper-zinc ore bodies in the world.
Antamina Mine is electrically connected to five 220 kV transmission lines located in regions with
isokeraunic levels from 15 to 90 thunderstorm days per year. In the period from 2002 to 2006, 80 nonschedule
outages due to lightning which have affected the process productive have been observed in
these lines. Antamina has too a 23 kV overhead shielded distribution ring network in which outages
due to lightning have been also observed. In the middle of 2003 Antamina started to work in
partnership with Tyco Electronics in order to evaluate the lightning performance of the distribution
and transmission lines. With basis in these studies from January 2006 till June 2007, approximately
450 units of line arresters were installed along the distribution network and 265 gapless transmission
line arresters (TLA) were installed along the sections of the two 220 kV transmission lines with poorer
lightning performance. From October 2006 on only one outage due to lightning was recorded in these
two lines, proving the effectiveness of this protection system.
This paper presents details about the transmission line lightning performance studies and evaluation
carried out by Tyco Electronics and Antamina in this partnership project. Methods to select the
arresters characteristics and to define the quantity and the optimized arresters location along the lines
are presented. Field experience obtained in these two first years and the line performance / reliability
of the system after the TLA application in comparison with the performance before the arresters’
installation are presented and discussed.
Keywords
Transmission Line Arresters; Lightning performance; Lightning outages; Lightning Protection
Hrčak ID:
198499
URI
Publication date:
20.6.2017.
Visits: 948 *