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ANTAMINA PROJECT

220 kV VIZCARRA SUBSTATION

220 kV SWITCHYARD

SHIELDING AGAINST LIGHTNING

Revised A!"ved D#$e

Re"!$ 2%&'0&22&E & Rev A

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REVISION

REV DESCRIPTION DATE

A First Issue June 2nd, 1999

(v#!()))(#s(*"+ve!si"+($,(s*!#$*-.2(22/%12%3d"*

2

VIZCARRA SUBSTATION 4 SHIELDING AGAINST LIGHTNING

2%&'0&22&E&Rev A

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220 kV SWITCHARD

SHIE!DIN" A"AINST !I"HTNIN"

CONTENT

%300 PURPOSE

2300 STANDARDS 5 RE6ERENCES

'300 PROJECT DATA

300 DESIGNING WITH ELECTROGEOMETRIC MODEL

/300 CHEC7ING WITH PROTECTED ZONE METHOD

8300 CONCLUSIONS

(v#!()))(#s(*"+ve!si"+($,(s*!#$*-.2(22/%12%3d"*

'

VIZCARRA SUBSTATION 4 SHIELDING AGAINST LIGHTNING

2%&'0&22&E&Rev A

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220 kV SWITCHARD

SHIE!DIN" A"AINST !I"HTNIN"

1#00 P$RPOSE

T-is d"*9,e+$ !"vides $-e *#:*9:#$i"+s "; $-e #!!#+

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? 20 ,

#+d $-e 220 kV *"+d9*$"!s )i:: ?e i+s$#::ed #$

- %2 ,

'#00 DESI"N WITH E!ECTRO"EO(ETRIC (ODE!

'#01 Strikin) Dist*n+e

A**"!di+< $" $-e e:e*$!"

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Req = /832Ohm

Zs = '8'3 Ohm

Ic = 13%//kA

rs= 231/m

T-e #*$9#: *!i$i*#: dis$#+*e Rs,9s$ ?e *#:*9:#$ed "+ $-e ?#sis "; rs*"!!e*$ed )i$-

$-e #:$i$9de *"!!e*$i"+ ;#*$"! )-i*- is de$e!,i+ed #**"!di+< $" $-e ;"!,9:#

B%/0

%000

=

H

ek

T-e+ $-e #:$i$9de *"!!e*$i"+ ;#*$"! is

k %3'1/

#+d $-e v#:9e "; $-e *!i$i*#: dis$#+*e is

k

rR ss =

Rs 203 m

'#02 Hei)t -. te O/ere*d sied ires

A**"!di+< $" $-e 6i

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T-e *!i$e!i# ;"! $-is ,e$-"d is $-#$ $-e :eve: "; $-e s$!ike is $)i*e $-e -ei

#**"!di+< $" $-e 6i

desi