Ekibastuz–Kokshetau high-voltage line
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The Ekibastuz–Kokshetau high-voltage line is an alternating current electrical power transmission line in Kazakhstan from Ekibastuz to Kokshetau. It was the first commercially used power line in the world which operated at 1,150 kV, the highest transmission line voltage in the world. It is a part of the Itatsk (Sharypovo)–Barnaul–Ekibastuz–Kokshetau–Kostanay–Chelyabinsk (Siberia–Kazakhstan–Urals) transmission system, which was designed to transfer electricity from Siberia and Kazakhstan to industrial regions in the Urals.[1]
Ekibastuz–Kokshetau high-voltage line | |
---|---|
Location | |
Country | Kazakhstan |
Coordinates | 51°52′51″N 75°12′59″E 53°19′4″N 68°55′02″E |
From | Ekibastuz |
To | Kokshetau |
Ownership information | |
Operator | KEGOC |
Construction information | |
Construction started | 1980 |
Commissioned | 1985 |
Technical information | |
Type | Overhead power line |
Type of current | AC |
Total length | 432 km (268 mi) |
Power rating | 5,500 MW (original) |
AC voltage | 1,150 kV (original) 500 kV (current) |
Designated as power line number 1101, it runs 432 kilometres (268 mi) from Ekibastuz to Kokshetau. It is mounted on transmission towers with an average height of 45 metres (148 ft). The weight of the conductors between the spans is approximately 50 tons. With a voltage of 1,150 kV, the line had a maximum transfer capacity of 5,500 MW.[2]
The whole length of the Siberia–Kazakhstan–Urals line is 2,344 kilometres (1,456 mi), of which 1,421 kilometres (883 mi) is located in Kazakhstan and the rest is located in Russia.[3]