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Ekibastuz–Kokshetau high-voltage line
The Ekibastuz–Kokshetau high-voltage line is an electrical power transmission line in Kazakhstan. It runs at 1150 kV and holds the record for having the highest operating transmission voltage in the world.
Construction started, and the line entered service during the Soviet era. Designated as power line number 1101, it runs from Ekibastuz to Kokshetau. It is mounted on transmission towers with an average height of . The weight of the conductors is approximately 50,000 tons.
Moreover, the experimental transmission line in Beliy Rast, near Dmitrov in Moscow region, was also designed to be operated at 1150 kV, but later was disassembled.
==History==
In 1973, the Soviet Union built a three-phase UHV experimental test circuit over a kilometre long at the Beily Rast substation. In 1978, a 270 km UHV test line for industrial use was built from Sharypovo to Novokuznetsk. In 1985, this test line became part of the Ekibastuz–Kokshetau line. At the time, no other country had an operational UHV line of this voltage, although several other countries were running experiments. As of 2014, it is still the case that China is the only other country with an operational UHV line of 1000 kV AC or more (Liu, p. 21, 2014).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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