Parallel gap structure of power transmission and distribution line

Abstract

The invention discloses a parallel gap structure of a power transmission and distribution line. The parallel gap structure comprises an upper arcing horn and a lower arcing horn, wherein each of the upper arcing horn and the lower arcing horn comprises a half upper arcing horn and a half lower arcing horn which are symmetrically arranged in a left-right way, the upper arcing horn and the lower arcing horn are respectively connected in parallel to two ends of an insulator string, the half upper arcing horn is fixed on an upper arcing horn support, the upper arcing horn support has a sheet-shaped structure having an L-shaped cross section, the sheet-shaped structure is formed by two steel plates perpendicular to each other, a ball head hanging ring is arranged between the upper arcing horn supports which are symmetrically arranged, a round ring of the ball head hanging ring is parallel to vertical steel plates of the upper arcing horn supports, the ball head hanging ring is fixedly connected by the vertical steel plates perpendicularly penetrating the two upper arcing horn supports and a bolt of the round ring, a connection plate having a strip-shaped structure is fixedly arranged at an installation end of the half upper arcing horn, and each connection plate is in bolt connection with a horizontal steel plate of the upper arcing horn support. By a parallel gap, the arcing horns can be rapidly assembled and disassembled, time and labor are saved, and the labor intensity of a worker is greatly reduced.

Description

technical field [0001] The invention belongs to the protection technical field of insulators, in particular to a parallel gap structure used for lightning protection on transmission and distribution lines. Background technique [0002] The statistical data of AC high-voltage and ultra-high-voltage overhead transmission line faults in my country in recent years show that lightning strikes account for about 70% of the total line faults. Lightning discharges through insulators, and arc burns insulators, becoming permanent faults. The replacement of insulators during power outages reduces the reliability of power grid power supply and increases operating costs. At present, the existing lightning protection measures for overhead lines include: erecting lightning protection lines, reducing grounding resistance of towers, strengthening insulation, installing line-type arresters, etc. The core idea of ​​these lightning protection protection measures is to improve the lightning resis...

AI Technical Summary

Problems solved by technology

These existing structures undoubtedly have a good effect on improving the lightning protection of the arc angle. However, there is no convenient and quick way for the maintenance and replacement of the arc angle. The technicians who have overhauled the arc angle know that Due to the relatively fixed connection relationship, the existing parallel gap structure needs to replace the ball head hanging ring and the bowl head hanging ring at the same time when changing the arc angle. This method of changing the arc angle is time-consuming, laborious, inefficient, and increases Reduce the labor intensity of the operators, prolong the working time and increase the cost of use

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