Abstract
Transmission corridor capacity can be increased by compacting
transmission lines. Compaction is achieved by reduction of tower
heights, spacing between conductors and tower and spacing
between conductor bundles. These shorter spacings require the
restraint of conductors. Composite insulators are ideally suited
for maintaining conductor clearances because of their light weight
and high strength.
This paper analyzes both electrical and mechanical requirements
for comyosite insulators to be used on compact transmission
lines. Questions relating to life expectancy and aging in this
application are raised and discussed. The results provide
guidance for the design of compact lines with composite
insulators.
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