Embedded double-fracture ice melting disconnecting switch

Abstract

The invention provides an embedded double-fracture ice-melting disconnecting switch which comprises a vertical opening type disconnecting link, a first horizontal opening type disconnecting link and asecond horizontal opening type disconnecting link, wherein the first horizontal opening type disconnecting link and the second horizontal opening type disconnecting link are driven by a horizontal opening type disconnecting link operating mechanism, the end part of the first horizontal opening type disconnecting link is fixedly connected with a first moving contact, and the end part of the secondhorizontal opening type disconnecting link is fixedly connected with a second moving contact; and the first horizontal opening type disconnecting link and the second horizontal opening type disconnecting link are driven by the horizontal opening type disconnecting link operating mechanism to move relatively, and embedded conductive connection is formed between the first moving contact and the second moving contact. The embedded double-fracture ice-melting disconnecting switch is adopted to carry out the ice melting operation on the power transmission line, the manual line disconnecting operation can be avoided, the safety risk of the ice melting operation high above the ground is avoided, the outage time of the power transmission line during the ice melting operation can be greatly shortened, the ice melting operation efficiency is greatly improved, and the method has the outstanding advantages of saving the occupied area, reducing the investment cost and the like.

Description

technical field [0001] The invention relates to the field of structural design of an ice-melting isolating switch, in particular to an embedded double-break ice-melting isolating switch. Background technique [0002] With global climate change and the construction of UHV transmission projects, more and more high-voltage and ultra-high-voltage transmission lines across ice-covered areas are increasing, and the possibility of large-scale icing on transmission lines in winter is increasing; Ice usually leads to galloping accidents of ice-coated conductors and ice flash accidents of insulators. When the conductors are seriously ice-coated, there are even dangers of disconnection and tower collapse. [0003] For the icing of transmission lines, DC deicing devices are mainly used at present. For the safety of AC equipment, AC equipment and DC ice-melting lines need to be isolated when power transmission lines are thawed. In order to ensure that the DC voltage during ice melting ...

AI Technical Summary

Problems solved by technology

Therefore, when manually melting ice, there must be a risk of high-altitude operations, and the operation is time-consuming and intensive, which greatly affects the efficiency of ice-melting operations

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