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Insulation Level

Insulation Level

Insulation Level

(OP)
Gents

if the proposed transmission line is at high altitude area (more than 2000m above sea level) with a span of 300km, 345kV..by simple high level analysis, what are the considerations to be made in design to minimise the line cost in terms of insulation voltage levels?

thanks,
Danilo

RE: Insulation Level

Considering that the altitude derating factor at 2000 m is around 90%, the standard 345 kV dielectric design parameters of the T. Line should be compensated around 10%. This will impact the number of insulators, minimum sag, the phase-to-phase and phase-to ground clearances.
Standard tower design for 400 kV (or 500 kV) at sea level might be used for this application.

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