A reserved cable device for OPGW terminal in high voltage substation

Abstract

The invention discloses an OPGW (Optical Fiber Composite Overhead Ground Wire) terminal reserved cable device of a high voltage transformer substation. The device solves the problem that a strand of an optical cable is broken due to interturn discharge electric corrosion caused by an interturn induction voltage of the wound optical cable, avoids the problem that the strand is broken due to galvanic corrosion caused by contact of the optical cable and a seizing wire, and is safe, reliable and attractive. The device comprises a non-metal cross fork, internal hinge shafts, external hinge shafts, an internal hinge, an external hinge and a bolt pin, wherein a laying shoulder extends from each of four arms of the non-metal cross fork; the internal hinge shaft is arranged at the end part of each arm; the external hinge shaft is arranged at the end part of the laying shoulder; one end of the internal hinge and one end of the external hinge are connected together through the bolt pin; the other end of the internal hinge is fixed to the non-metal cross fork through the internal hinge shaft, while the other end of the external hinge is fixed to the non-metal cross fork through the external hinge shaft, a rectangular frame is formed in the upper part of each arm of the non-metal cross fork, and the OPGW terminal reserved cable is fixedly arranged in each rectangular frame.

Description

technical field [0001] The invention relates to the technical field of electricity, in particular to an OPGW terminal reserved cable device of a 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 500KV high-voltage substation in the domestic power system is made of metal flat steel or element steel with ferromagnetic properties, and uses metal iron wire material Bind and fasten the reserved OPGW cables. [0004] The OPGW terminal reservation cable device of this ultra-high voltage substation has the following defects: [0005] (1) The ferromagnetic m...

AI Technical Summary

Problems solved by technology

[0005] (1) The ferromagnetic material forms a closed magnetic circuit, and the magnetic circuit passes around the OPGW reserved cable, providing electromagnetic induction conditions for the OPGW reserved cable, causing the induced voltage between the OPGW reserved cable turns to increase, resulting in the OPGW reserved cable turns Intermittent discharge electric erosion and broken strands

[0006] (2) The process of bundling the OPGW reserved cable with iron wire material causes the iron wire to directly contact the OPGW optical cable, causing the problem of dissimilar metal galvanic corrosion and broken strands

Cause major equipment hidden dangers to the optical cable lines of the power grid, directly threatening the safe production of the power grid

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