Live line replacing method high voltage transmission line strain insulator-string and device

Abstract

This invention relates to a method for exchanging tension-proof insulator strands used in high voltage transmission lines and a devie, which installs a front and a back clamp for anchoring and stringing leads and a connection clamp of an anchor line at two places of connecting metals of a lead end and a horizontal end constituting a vertical pulley set for stringing the insulator strand and the connecting metal at both sides between the strand and the connecting metal, strings the pulley set synchronously and slowly to string one-side two high voltage leads, then to string the anchor line and the anchor lead, at the same time, removes the connection of the insulation strand and the connecting metal, relaxes the pulley set slowly to transfer the lead tension to the anchor line completely, therefore, when the lead is anchored, the original tensioned insulation strand is relaxed to a vertically hanging one for exchange, and the tighten, anchor of the lead and separation of the the insulator strand and the metal are finished at one run.

Description

technical field [0001] The present invention relates to a method and device for the operation and maintenance of overhead high-voltage transmission lines. Specifically, the present invention relates to a live replacement method and device for tension insulator strings used in high-voltage transmission lines. More specifically, the present invention relates to A live replacement method and device for a full string of quadruple tension insulator strings for high-voltage transmission lines. The line voltage can reach 500kv. Background technique [0002] In the operation of overhead high-voltage transmission lines, when the high-voltage conductors pass through the two ends of the iron tower in a horizontal manner, the high-voltage transmission lines are usually used in series with tension insulators to connect the high-voltage conductors close to the two sides of the iron tower to the cross-arm of the iron tower. , and the tensioned high-voltage conductors near the outer sides ...

AI Technical Summary

Problems solved by technology

[0018] However, as mentioned above, the structure of the above-mentioned four-connected tension string is complicated, and the line voltage is high, and the combined tension of the four-split wires is large. If tools such as insulating bottle holders are used, not only the insulating tools are bulky and heavy, it is difficult to carry and carry, and the high-altitude Difficulty and labor intensity of operation are high

At present, it is difficult to achieve "lightweight, labor-saving, safe and reliable" implementation of live replacement for the quadruple tension insulator strings that have been in operation for nearly 20 years

Images