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AC Suspension Composite Insulator

A composite insulator, suspension technology, applied in suspension/strain insulators, etc., can solve problems such as poor pollution flashover resistance, and achieve the effects of avoiding waste, excellent pollution flashover resistance, and reducing product weight

Active Publication Date: 2011-11-30
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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  • AC Suspension Composite Insulator

Examples

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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 skirt of the small umbrella is equal, and the distance between the two adjacent umbrellas is S 1 For 97.5mm~102.5mm, the umbrella of the big umbrella sticks out P 1 Umbrella with small umbrella sticking out P 2 The ratio is 1.2~1.3, and the average umbrella stretches out P av It 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 P av =(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 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. The diameters of the sheds of the middle umbrellas are equal, so The diameters of the umbrella skirts of the small umbrellas are equal. Adjacent large umbrella spacing S 1 210mm~220mm; the umbrella of the big umbrella protrudes P 1 With the umbrella in the umbrella sticking out P 3 The ratio is 1.2~1.3, the umbrella of the big umbrella stretches out P 1 Umbrella with small umbrella sticking out P 2 The ratio is 1.7~1.8, and the average umbrella stretches out P av It...

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Abstract

The invention discloses an AC suspension type composite insulator, which comprises a mandrel, metal fittings arranged at both ends of the mandrel, a sheath covering the mandrel, a large umbrella with the same diameter as the mandrel coaxially arranged outside the mandrel, and each A small umbrella between adjacent large umbrellas or a combination of a middle umbrella and a small umbrella. By adjusting the arrangement order of umbrellas with different umbrella diameters, and optimizing the umbrella extension and spacing of umbrellas with different umbrella diameters, the structural parameters of the AC composite insulator shed with the best pollution flashover characteristics are obtained. The optimized design of the shed structure parameters makes the composite insulator have excellent pollution flashover resistance under the same structural height. At the same time, due to the reasonable structure design, the shed material of the composite insulator is greatly saved and the waste of materials 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 Patents(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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