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Method and device for improving pollution flashover performance of suspension insulator

A technology for suspension insulators and porcelain insulators, applied in insulators, electrical components, circuits, etc., can solve the problems of loss of hydrophobicity of synthetic insulators, corona discharge, end field strength distortion, etc., and achieve good corona discharge characteristics and improve The effect of wind deflection tripping and improving pollution flashover characteristics

Inactive Publication Date: 2015-05-27
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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Problems solved by technology

However, synthetic insulators will suddenly lose their hydrophobicity, and the field strength distortion at the end is serious, and corona discharge is prone to occur

Method used

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  • Method and device for improving pollution flashover performance of suspension insulator
  • Method and device for improving pollution flashover performance of suspension insulator
  • Method and device for improving pollution flashover performance of suspension insulator

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0026] The invention improves the pollution flashover performance of the suspension insulator by installing an insulating sheath on the transmission line conductor at the high voltage end of the suspension insulator, and the improvement effect is related to parameters such as the length and thickness of the sheath. Considering that after the insulation sheath is installed on the transmission wire at the high-voltage end of the suspension insulator, there will be a certain electric field distortion at the wire clamp and the two ends of the insulation sheath, and it is necessary to install anti-corona facilities at these positions. figure 1 Schematic diagram of the device structure for improving the pollution flashover performance of suspension insulators. figure 1 The parts in the middle are: iron tower 1, suspension insulator string 2, wire cl...

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Abstract

The invention relates to a method and a device for improving pollution flashover performance of a suspension insulator. The method comprises steps as follows: a transmission line at a high-voltage end of the suspension insulator is sleeved with an insulation sheath, a grading ring for a line grip is arranged at the line grip, and a sheath grading ring is arranged at each of two ends of the insulation sheath, so that the electric field distortion is eliminated. The insulation sheath is made of silicone rubber and the like, and the suspension insulator is one of a porcelain insulator string, a porcelain composite insulator string, a glass insulator string, a glass composite insulator string, a rod porcelain insulator, a composite insulator and the like. According to the method and the device, after the insulation sheath is additionally mounted on the transmission line at the high-voltage end of the suspension insulator, the effective leakage distance of the suspension insulator can be increased, so that the pollution flashover performance of the suspension insulator can be improved. The device is mounted on the transmission line and runs actually on site in 2009, and the running effect is good according to repeated line patrols.

Description

technical field [0001] The invention relates to a method and a device for improving the pollution flashover performance of a suspension insulator. Background technique [0002] Pollution flashover is an intricate process involving electrical, thermal and chemical phenomena. Macroscopically, the pollution flashover process can be divided into the following four stages: pollution on the surface of the insulator, wetting on the surface of the insulator, the generation of partial discharge, and the development of partial arc to complete the flashover. The huge loss of pollution flashover and the consequences it brings to various fields of industrial and agricultural production are difficult to count. For the continuous production of chemical industry, metallurgy, mining and other departments, it may cause equipment scrapping and damage, product quality decline, and even cause personal injury and death. It may also have a serious impact on politics, transportation and other aspe...

Claims

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Application Information

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IPC IPC(8): H01B17/50H01B17/42
Inventor 梅红伟王黎明赵晨龙刘平原关志成
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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