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Electrode system for flat insulation sample breakdown test

An electrode system and breakdown test technology, which is applied in the field of electrode systems, can solve the problems of cumbersome sample replacement steps, strict sample shape and size requirements, poor contact between the sample and the electrode, etc., to improve electrical resistance and homogenize the electric field , the effect of reducing waste

Inactive Publication Date: 2019-11-22
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional breakdown electrode system has problems such as cumbersome sample replacement steps, poor contact between the sample and the electrode, and strict requirements on the shape and size of the sample. The present invention designs an electrode system for the breakdown test of flat insulating samples. Through the elastic structure It simplifies the steps of replacing the sample, and makes the sample contact with the electrode more effectively, avoids tip discharge homogenization electric field through electrode chamfering and improves the accuracy of breakdown measurement. The present invention is applicable to different materials, different shapes, different Large and small insulating materials can efficiently and accurately measure the breakdown characteristics of insulating samples

Method used

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  • Electrode system for flat insulation sample breakdown test
  • Electrode system for flat insulation sample breakdown test
  • Electrode system for flat insulation sample breakdown test

Examples

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Effect test

Embodiment 1

[0023] An electrode system for the breakdown test of a flat insulation sample, its composition includes: a test electrode, a support structure, an elastic structure, an electrode lead and a test container, the test electrode includes a high-voltage electrode and a ground electrode, and the high-voltage The sample is placed between the electrode and the ground electrode. The support structure includes a set of polytetrafluoroethylene rods and three pieces of rectangular plexiglass. The elastic structure is composed of a spring, a cylindrical rod and a pressure equalizing ball. The electrode lead includes a high voltage end lead and a ground end lead, the electrode system is placed in a test container filled with transformer oil, and the voltage equalizing ball and the ground electrode connection end pass through the high voltage end lead and the ground terminal leads are drawn out from the inside of the test container.

Embodiment 2

[0025] According to the electrode system used for the breakdown test of flat insulation samples described in Example 1, the high voltage electrode, the ground electrode, the cylindrical rod and the pressure equalizing ball are made of brass, and the The high-voltage electrode is a cylinder with a diameter of 25 mm, a height of 20 mm, and a chamfer of 2 mm. The ground electrode is a cylinder with a diameter of 75 mm, a height of 10 mm, and a chamfer of 5 mm. The described cylindrical rod is a cylinder with a diameter of 10 mm and a height of 100 mm. The equalizing ball is a 30mm diameter sphere.

Embodiment 3

[0027] According to the electrode system used for the breakdown test of the flat insulation sample described in embodiment 1 or 2, what the described supporting structure adopts is organic glass material, and three pieces of rectangular organic glass are 200 mm long, 100 mm wide, and 10 mm thick, respectively Drill four round holes with a diameter of 10mm at the four corners of the rectangular plexiglass at a distance of 12mm from both sides.

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Abstract

The invention discloses an electrode system for a flat insulation sample breakdown test. The electrode system comprises a test electrode, a support structure, an elastic structure, an electrode lead and a test container (10). The test electrode is composed of a high-voltage electrode (1) and a ground electrode (2); and a sample (11) is arranged between the high-voltage electrode and the ground electrode. The support structure includes one set of polytetrafluoroethylene rods (3) and three pieces of rectangular organic glass (4). The elastic structure includes a spring (5), a cylindrical rod (6)and a pressure equalizing ball (7). The electrode lead is formed by a high voltage end lead (8) and the ground end lead (9). Therefore, researches of breakdown characteristics of flat material insulation samples of different materials can be performed well; with the elastic structure, the steps of replacing the sample are simplified and the electrode and the insulation sample are in close contact; because of electrode chamfering, point discharge electrode field homogenization can be avoided, the dispersion of the breakdown voltage can be reduced, and accurate measurement of the sample breakdown voltage can be realized.

Description

technical field [0001] The invention relates to an electrode system for breakdown test of flat insulation samples. Background technique [0002] With the development of power equipment in the direction of high voltage and large capacity, higher requirements are put forward for the reliable and safe operation of power equipment. Insulation is an important factor to ensure the safe operation of power equipment. The breakdown field strength of insulation is one of the most important indicators for evaluating the performance of insulating materials. Therefore, it is an important topic in the high voltage field to realize the rapid and accurate measurement of the breakdown field strength of insulating materials. . The traditional breakdown electrode system has problems such as cumbersome sample replacement steps, poor contact between the sample and the electrode, and strict requirements on the shape and size of the sample. The present invention designs an electrode system for th...

Claims

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Application Information

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IPC IPC(8): G01R31/16G01R31/12
CPCG01R31/1263G01R31/16
Inventor 陈庆国孙文鑫池明赫林林张金烽
Owner HARBIN UNIV OF SCI & TECH
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