1000kV extra-high voltage AC line tangent tower lightning arrester

By designing a linear tower lightning arrester for 1000kV ultra-high voltage AC line, the problem of the ultra-high voltage AC line being unable to be installed in high-altitude UHV AC lines is solved, and overvoltage suppression of ultra-high voltage AC lines is achieved, reducing structural size and construction risks, and saving investment.

CN222706218UActive Publication Date: 2025-04-01NORTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GRP
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Patent Information

Application Number
CN202420958033.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-06
Publication Date
2025-04-01
Estimated Expiration
2034-05-06

AI Technical Summary

Technical Problem

There are no engineering examples in the prior art to apply overvoltage arresters to suppress overvoltage arresters, which leads to the inability to effectively reduce the overvoltage level of ultra-high voltage AC lines in high altitude areas, affecting the economic and safe operation of the project.

Method used

A 1000kV ultra-high voltage AC line linear tower lightning arrester is designed, including the middle phase and side phase lightning arrester. The lightning arrester is connected through V-type and I-type overhanging series, and a wireless transmission lightning arrester counter is used to ensure the loose connection of the grounding wire of the lightning arrester and effectively suppress overvoltage of the ultra-high voltage AC line.

Benefits of technology

The overvoltage suppression of the 1000kV ultra-high voltage AC line has been achieved, the structural size of the AC transmission tower has been reduced, the construction and operation risks have been reduced, and the engineering investment has been saved.

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Abstract

The utility model discloses a 1000kV extra-high voltage alternating current line tangent tower lightning arrester which comprises a lightning arrester body, the lightning arrester body is installed at one end of a wire, a drainage wire is installed at one end of the wire, the other end of the wire is connected with a tower body of an iron tower, a grounding wire of the lightning arrester body is loosely connected with a lightning arrester counter, and the lightning arrester counter adopts wireless transmission. The conducting wires comprise three-phase conducting wires, the three-phase conducting wires comprise middle-phase conducting wires and side-phase conducting wires, the middle-phase conducting wires are provided with V-shaped suspension strings, the side-phase conducting wires are provided with I-shaped suspension strings, the middle-phase conducting wires are connected with one end of a middle-phase lightning arrester through the V-shaped suspension strings, one end of the middle-phase lightning arrester is a high-voltage end, and the other end of the middle-phase lightning arrester is a grounding end; the other end of the middle-phase lightning arrester is connected with a hanging point at one end of the suspension support in a hanging mode, the side-phase wire is connected with one end of the side-phase lightning arrester through the I-shaped suspension string, one end of the side-phase lightning arrester is a high-voltage end, and the other end of the side-phase lightning arrester is a grounding end. And the middle-phase lightning arrester and the side-phase lightning arrester are overvoltage suppression lightning arresters.
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