Antamina Project 220 KV Vizcarra Substation: Revised Approved Date
Antamina Project 220 KV Vizcarra Substation: Revised Approved Date
Antamina Project 220 KV Vizcarra Substation: Revised Approved Date
Revised
Report
Approved
21-30-21-E - Rev A
Date
REVISION
REV
DESCRIPTION
DATE
First Issue
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1.00
PURPOSE
2.00
3.00
3.01
3.02
3.03
PROJECT DATA
Service Conditions
Electrical System
Construction Data
4.00
4.01
CALCULATION HYPOTHESIS
Maximum Wind
Wind Load
Wind Angle
Electrical Distance
Shortcircuit
Shortcircuit Load
Shortcircuit Angle
Electrical Distance
4.02
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PURPOSE
The purpose of this document is to provide the calculations for 220kV Electrical
Cable Bus Phase Spacing applicable to Vizcarra Substation as a part of the electric
supply for Antamina Project.
2.0
3.0
PROJECT DATA
3.1
Service Conditions
For Vizcarra Substation, we will consider the Maximum Wind Velocity as:
V = 130km/h
3.2
Electrical System
The design short circuit level is:
I = 6kA
3.3
Construction Data
Arrangment of Conductors
We will use phase to phase distances (center line value):
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d = 5m
There will be two conductors per phase and the separation between each
of them is:
e = 200mm
Insulators
Each insulator string has following characteristics:
Length:
l = 3.5 m
Diameter:
Weight:
Wa = 165 kgf
= 280mm
Conductors
The conductor has the following characteristics:
4.0
Diameter:
c =31.62
mm
wc = 1.979 kgf/m
Span:
a = 48 m
CALCULATION HYPOTHESIS
4.1
Maximum Wind
Wind Load
In this part we will find the wind load on an insulator string (Ea) and a
conductor (Ec) :
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Ec
=98.834kgf
ec :=
Ec
a
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