A reserved cable device for OPGW terminal in UHV substation

Abstract

The application discloses an OPGW (Optical Fiber Composite Overhead Ground Wire) terminal reserved cable device for an ultra-high voltage transformer substation, which solves the problems of electric corrosion and strand breakage caused by turn-to-turn discharge of a cable due to turn-to-turn induced voltage of the wound cable, avoids galvanic corrosion and strand breakage caused by contact between the cable and a binding wire, and is safe, reliable and attractive. The OPGW terminal reserved cable device comprises a non-metallic inner fork and non-metallic outer forks, wherein the non-metallic inner fork is cross-shaped; the non-metallic outer forks are arranged on the four arms of the non-metallic inner fork and form four grooves together with the four arms; an OPGW terminal reserved cable is wound in the four grooves; a plurality of cable limiting and pitch adjusting holes are formed in each of the arms of the non-metallic inner fork; a plurality of cable limiting and pitch adjusting holes are formed in the non-metallic outer forks and correspond to the cable limiting and pitch adjusting holes in the non-metallic inner fork; fastening pieces are inserted into the cable limiting and pitch adjusting holes to fix the OPGW terminal reserved cable in the grooves.

Description

technical field [0001] The invention relates to the technical field of electricity, in particular to an OPGW terminal reserved cable device of an ultra-high voltage substation. Background technique [0002] With the continuous development of society, electric power has become an indispensable energy source for people's production and life, so the technical development of substations closely related to electric power has attracted more and more attention. [0003] At present, the OPGW (Optical Fiber Composite Overhead Ground Wire, optical fiber composite overhead ground wire) optical cable terminal reserved cable device of the 1000KV UHV substation in the domestic power system is based on the conventional technology of the telecommunications industry, and the pre-cable fork is made of metal flat steel or yuan steel. plate. The technical solution for the telecommunications industry to design the reserved forks for optical cables does not consider the use in the strong electro...

AI Technical Summary

Problems solved by technology

Especially in UHV substations, the inter-turn induced voltage of OPGW optical cable wound in the reserved cable device made of metal steel material is relatively high, which often causes electric erosion and broken strands of OPGW optical cable between turns in the device, causing major equipment damage to the optical cable line of the power grid. Hidden defects, a direct threat to the safe operation of the power grid

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