Electrified defect elimination method and device for post insulator of cable terminal

Abstract

The invention provides an electrified defect elimination method and device for a post insulator of a cable terminal. The electrified defect elimination method comprises the following steps of: determining a relative height region of a safe electric field horizontal plane of a hot-line worker according to structural data of a to-be-replaced post insulator and structural data of a cable terminal; arranging an insulating plate in the determined relative height region of the horizontal plane of the safe electric field; using a jack for supporting a metal flange plate at the bottom part of the cable terminal, and enabling the live-line worker to carry out live-line defect elimination operation in a protection region formed by insulating plates. Live-line work defect elimination is achieved, power failure is not needed, power supply reliability is remarkably improved, a power failure application link is omitted, work process time is shortened, and operation and maintenance responsivity is remarkably improved; The electrified defect elimination operation process is safe and reliable, the defect elimination device is reasonably used, the operation complexity is greatly reduced, the operation time consumption is shortened, and the efficiency of an electrified working mode is remarkably improved; AND operation standardization is easy to realize, and a more convenient and rapid post insulator defect elimination means is provided for a cable operation and maintenance institution.

Description

technical field [0001] The invention belongs to the technical field of cable operation and maintenance, and more specifically relates to a method and a device for eliminating live defects of support insulators at cable terminals. Background technique [0002] With the expansion of the scale of urban construction, the relocation of overhead lines into the ground has expanded from the central area of ​​the city to the surrounding area, making the application of power cables also increase year by year. Most of the cable terminals are outdoor terminals, and the bottom of the terminal flange is supported by post insulators. Most of these insulators are of porcelain structure, and they will be damaged after long-term operation in various outdoor environments. Once damaged, the cable terminal will be tilted, thereby cause cable failure. [0003] In the case of defects in post insulators, at present, power outages are generally used to eliminate defects. However, power outages need...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the deficiencies existing in the prior art, the object of the present invention is to provide a method and device for live-line defect elimination of cable terminal post insulators, which overcomes the long power-off application process, long-time-consuming process of defect elimination, and high efficiency of operation methods existing in traditional power-off work methods. Low power supply and poor reliability of power supply, providing a more convenient and fast means of eliminating the gap of post insulators for cable operation and maintenance units

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