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Lightningproof anti-ice-flashover composite insulator for 500kV line

A composite insulator and insulator technology, applied in insulators, suspension/strain insulators, circuits, etc., can solve problems such as poor lightning protection performance, and achieve the effects of protecting external insulation performance, improving electric field distribution, and improving lightning protection and ice flashover capabilities.

Pending Publication Date: 2019-05-21
STATE GRID HUNAN ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the lightning protection performance of the existing 500kV composite insulator is poor, and the existing lightning protection and ice protection insulators cannot meet the requirements of the 500kV line, so a 500kV line lightning protection and ice flashing composite insulator is proposed

Method used

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  • Lightningproof anti-ice-flashover composite insulator for 500kV line
  • Lightningproof anti-ice-flashover composite insulator for 500kV line
  • Lightningproof anti-ice-flashover composite insulator for 500kV line

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Embodiment Construction

[0028] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0029] combine Figure 1-7 , this embodiment proposes a 500kV line lightning protection and anti-ice flash composite insulator, which includes from top to bottom: the upper unit part, the upper voltage equalizing ring 1, the lower unit part and the lower voltage equalizing ring 2; the...

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Abstract

The present invention relates to a lightningproof anti-ice-flashover composite insulator for a 500kV line, which is characterized in that the composite insulator successively comprises an upper unit part, an upper grading ring, a lower unit part and a lower grading ring from top to bottom. The upper grading ring is mounted on an upper end of the lower unit part; the lower grading ring is mounted on a lower end of the lower unit part; the upper unit part comprises a lightning arrester and a first sub-insulator in parallel; the lower unit part comprises a second sub-insulator and a third sub-insulator in parallel; an upper end of the second sub-insulator is connected with a lower end of the first sub-insulator; and an upper end of the third sub-insulator is connected with a lower end of thelightning arrester. The composite insulator improves the lightning protection and anti-ice-flashover capability of the 500kV composite insulator.

Description

technical field [0001] The invention relates to the technical field of electrical engineering, in particular to a composite insulator for 500kV line lightning protection and ice flash protection. Background technique [0002] In recent years, with the rapid development of my country's social economy and electric power construction, the 500kV transmission network has become the backbone grid of provincial companies. The line adopts double-string structure insulators, and the old lines are continuously transformed into insulators by "single to double". In bad weather, the transmission line is prone to icing flashover or lightning flashover, which will cause line tripping, and even cause accidental power outage, threatening the safety and stable operation of the power grid. [0003] At present, for ice-covered flashover, the electrical performance of composite insulators for ice-covered flashover can be improved to a certain extent by increasing the number and length of insulato...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/04H01B17/38H01B17/42H01B17/46
Inventor 蒋正龙吴伟王博文
Owner STATE GRID HUNAN ELECTRIC POWER
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