AC hanging-type composite insulator

A composite insulator and suspension technology, which is applied in the direction of suspension/strain insulators, can solve the problems of poor pollution flashover resistance and other problems, and achieve the effects of avoiding waste, excellent pollution flashover resistance, and product weight reduction

Active Publication Date: 2010-06-23
HEBEI XINHUA HIGH VOLTAGE ELECTRICAL EQUIP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the problem of poor pollution flashover resistance of composite insulators in current high-voltage AC power transmission and transformation by adjusting the arrangement sequence of umbrellas with different umbrella diameters, optimizing the umbrella extension and umbrella spacing of umbrellas with different umbrella diameters, so that Composite insulators have the best anti-pollution flashover performance under the same structural height

Method used

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Embodiment 1

[0023] Such as figure 1 As shown, the insulator of the present invention is an AC suspension composite insulator, including a mandrel, metal fittings provided at both ends of the mandrel, a sheath covering the mandrel, and a large umbrella with the same diameter as the mandrel. And a small umbrella is set between each adjacent large umbrella, the diameter of the shed of the small umbrella is equal, the distance between the two adjacent umbrellas is 97.5mm ~ 102.5mm, the ratio of the umbrella extension of the large umbrella to the umbrella extension of the small umbrella It is 1.2~1.3, and the average umbrella extension is 71mm~76mm, and the creepage coefficient is 3.5~4.0. Average Umbrella Extended P av It's a big umbrella that sticks out P 1 And the umbrella of the small umbrella sticks out P 2 The mean value of , that is, Pav=(P 1 +P 2 ) / 2.

Embodiment 2

[0025] Such as figure 2 As shown, another insulator of the present invention is an AC suspension composite insulator, including a mandrel, metal fittings provided at both ends of the mandrel, a sheath covering the mandrel, and a diameter equal to the coaxial diameter of the mandrel. The large umbrella and the middle umbrella and the small umbrella between each adjacent large umbrella, the above-mentioned adjacent large umbrellas are arranged according to a small umbrella, a middle umbrella, and a small umbrella, and the diameters of the sheds of the middle umbrellas are equal, so The diameters of the umbrella skirts of the small umbrellas are equal. The distance between adjacent large umbrellas is 210mm~220mm; the ratio of the umbrella extension of the large umbrella to the umbrella extension of the middle umbrella is 1.2~1.3, and the ratio of the umbrella extension of the large umbrella to the umbrella extension of the small umbrella is 1.7~1.8 , and the average umbrella ex...

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Abstract

The invention discloses an AC hanging-type composite insulator, comprising a mandrel, hardware arranged at both ends of the mandrel, a sheath covered outside the mandrel, wherein, the outside of the mandrel is provided with large umbrellas which are coaxial with the mandrel and whose diameter is identical to that of the mandrel and small umbrellas or the combination of a medium umbrella and the small umbrella. Through adjusting the arranging sequence of the umbrellas with different diameters, the umbrella extension and the umbrella clearance of the umbrellas with different diameters are optimized, and umbrella-skirt structural parameter of AC composite insulator with the optimal pollution flashover characteristic is obtained. The umbrella-skirt structural parameter after optimization design leads the composite insulator to have excellent resistance to pollution flashover under the conditions of the same structural heights, meanwhile, the design of the structure is reasonable, accordingly, the umbrella-skirt material of the composite insulator is greatly saved, and the waste of the material is avoided.

Description

technical field [0001] The invention relates to the field of high-voltage insulators, in particular to a composite insulator used in high-voltage AC power transmission and transformation. Background technique [0002] Insulators are one of the most numerous and most critical components in power transmission and transformation systems. They are an important part of overhead transmission lines and play a very important role in power systems. With the continuous improvement of voltage levels, traditional porcelain insulators and glass insulators have encountered a series of problems such as difficult engineering construction, high engineering cost, and difficult operation and maintenance. [0003] Composite insulators have been widely used due to a series of advantages such as light weight, high mechanical strength, not easy to break, high pollution flashover voltage, no need for zero value detection, and easy manufacturing, transportation, installation and maintenance. The sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/04
Inventor 及荣军王黎明耿卫斌张楚岩
Owner HEBEI XINHUA HIGH VOLTAGE ELECTRICAL EQUIP
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