Overhead transmission line conductors with carbon and glass fiber composite core

U zadnjih nekoliko desetljeća došlo je do intezivnog razvoja tehnologije i materijala za izradu vodiča za visokonaponske nadzemne vodove. Cilj je uz iste ili usporedive vanjske dimenzije vodiča postići veće strujno opterećenje, smanjiti gubitke i omogućiti smanjenje provjesa uz isto strujno opterećenje i iste vlačne sile. Pojavljuju se novi tipovi vodiča. Jedan je od njih ACCC vodič. ACCC vodič ima kompozitnu jezgru i vanjski plašt od aluminija. Kompozitna jezgra sastoji se od karbonskih i staklenih vlakana te pokazuje izuzetna mehanička svojstva, znatno bolja od tradicionalnih vodiča s čeličnom jezgrom. Za isti promjer vodiča ACCC vodič sadrži puno veći udio aluminija u odnosu na tradicionalne vodiče, što rezultira većom strujnom provodljivošću.Over the last few decades there have been intensive technological and materials developments in designing conductors for high-voltage overhead transmission lines. Their goal has been to achieve a higher current carrying capacity, reduce transmission losses, and provide for a reduction of sag in transmission lines using conductors of the same or comparable outside diameter while maintaining the same current load and tensile forces. New types of conductors have emerged, one of them being the ACCC (Aluminium Conductor Composite Core) conductor. The ACCC conductor has a composite core surrounded by an aluminium envelope. The composite core consisting of carbon and glass fibers exhibits exceptional mechanical properties, much better in comparison with conventional steel-core conductors. For the same conductor diameters ACCC conductors contain a much higher proportion of aluminum as compared to conventional conductors, which results in a higher electrical conductivity