Ultra-low loss and ultra-low temperature OPGW (optical fiber composite overhead ground wire) and production method thereof

Abstract

The invention relates to an ultra-low loss, ultra-low temperature OPGW optical cable and its production method, which is especially suitable for long-distance, large-capacity, low-loss UHV long-distance power transmission network, and can be used for high altitude, low temperature and cold, dry and complex climate Communication fields in various harsh environments such as changeable, windy and sandy environments. Including ultra-low loss optical fiber, G652D optical fiber, low-temperature fiber paste, first stainless steel tube, second stainless steel tube, inner high-strength aluminum-clad steel wire and outer high-strength aluminum-clad steel wire; ultra-low Lost optical fiber, and evenly filled with low temperature fiber paste to form the first stainless steel fiber unit, G652D optical fiber is installed in the second stainless steel tube, and evenly filled with low temperature fiber paste to form the second stainless steel fiber unit, the first stainless steel fiber unit and the second stainless steel fiber unit The optical fiber unit is stranded synchronously with the inner aluminum-clad steel wire, evenly coated with cable paste, and the outer layer is stranded with the outer aluminum-clad steel wire to form a double-layer armored ultra-low loss and ultra-low temperature OPGW optical cable.

Description

technical field [0001] The invention relates to an ultra-low loss, ultra-low temperature OPGW optical cable and its production method, which is especially suitable for long-distance, large-capacity, low-loss UHV long-distance power transmission network, and can be used for high altitude, low temperature and cold, dry and complex climate Communication fields in various harsh environments such as changeable, windy and sandy environments. Background technique [0002] With the successful operation of the 1000kV Jindongnan-Nanyang-Jingmen UHV AC test demonstration project with a transmission distance of nearly 700km, China has built the transmission line project with the highest voltage level, the highest technical level, and the strongest transmission capacity in operation in the world. China has made a major breakthrough in the long-distance, large-capacity, low-loss UHV core technology, and is at the forefront of the world. With the construction of more UHV AC and DC transmi...

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Problems solved by technology

[0007] (4) At present, there is a lack of an OPGW optical cable suitable for the OPGW optical cable line of the Qinghai-Tibet ±400kV DC interconnection project

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