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Insulator detection method and device

A technology for insulator detection and composite insulators, applied in the electrical field, can solve the problems of not necessarily accurate results, no solution proposed, complicated operation process, etc., and achieve the effect of solving the bonding performance.

Inactive Publication Date: 2015-06-17
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) There is uncertainty in the distribution of the gap generated by the debonding between the mandrel and the shed on the entire bonding interface, so the results obtained through the power-on test are not necessarily accurate, even if the detected leakage current is relatively small. Small, the tested composite insulator may still have bonding defects;
[0005] 2) The power-on test can only detect the bonding defects that have already occurred in the composite insulator, but cannot detect the bonding defects that are on the verge of occurring in the composite insulator and are easy to appear under the action of external force;
[0006] 3) The power-on test involves the application of high-voltage circuits. On the one hand, there are hidden dangers of operation safety. On the other hand, the operation process is usually complicated and the detection is time-consuming
[0007] For the above problems, no effective solution has been proposed

Method used

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Experimental program
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Embodiment 1

[0034] According to an embodiment of the present invention, an insulator detection method is provided, such as figure 1 As shown, the method may include:

[0035] S102: Load a pair of first acting forces on both sides of the interface between the first mandrel and the first sheath in the first sample, which are equal in magnitude, parallel to each other and opposite in direction, so as to make the first mandrel and the first sheath A sheath undergoes a first relative displacement, wherein the first sample is taken from the composite insulator to be tested;

[0036] S104: Record multiple different first displacement values ​​achieved by the first relative displacement and the magnitude of the first force corresponding to each first displacement value;

[0037] S106: Comparison and judgment between the first relative displacement-force curve and the second relative displacement-force curve formed according to each recorded first displacement value and the magnitude of the first...

Embodiment 2

[0089] According to an embodiment of the present invention, an insulator detection device for implementing the above insulator detection method is also provided, such as Figure 14 As shown, the device includes:

[0090]1) The loading unit 1402 is used to load a pair of first acting forces that are equal in magnitude, parallel to each other and opposite in direction on both sides of the interface between the first mandrel and the first sheath in the first sample, and make the second A first relative displacement occurs between a mandrel and the first sheath, wherein the first sample is taken from the composite insulator to be tested;

[0091] 2) The processing unit 1404 is configured to record multiple different first displacement values ​​achieved by the first relative displacement and the magnitude of the first force corresponding to each first displacement value;

[0092] 3) Judgment unit 1406, used to form the first relative displacement-action force curve and the second ...

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Abstract

The invention discloses an insulator detection method and device. The method comprises the steps: loading a pair of first acting forces which are equal in size, are parallel mutually and are opposite in direction at two sides of an interface surface of a first core bar and a first protective sleeve in a first sample, so as to enable the first core bar and the first protective sleeve to be subjected to first relative displacement, wherein the first sample is intercepted from a to-be-detected composite insulator; recording a plurality of different first placement values achieved by the first relative displacement as well as the size of the first acting force corresponding to each first displacement value; judging whether the adhesive property of the to-be-detected composite insulator can meet the preset standard according to the comparison between a first relative displacement-acting force curve which is formed by each recorded first displacement value as well as the first acting force corresponding to each first displacement value and a second relative displacement-acting force curve, and acquiring a reference composite insulator with the self-adhesive property corresponding to the preset standard by the second relative placement-acting force curve. According to the method and the device, the technical problem that the adhesive property of the composite insulator is detected without electrification is solved.

Description

technical field [0001] The invention relates to the electrical field, in particular to an insulator detection method and device. Background technique [0002] In the electrical field, composite insulators are important insulation devices used in transmission lines today. A composite insulator usually consists of a mandrel and multiple stacked sheds surrounding the mandrel. During operation, once the bonding condition of the interface between the mandrel and the shed, that is, the bonding of the composite insulator If the performance is not good, it may cause the composite insulator to break strings and generate heat, which will have a negative impact on the operating line. Therefore, it is necessary to test the bonding performance of composite insulators in the factory or in operation. [0003] Existing detection methods for composite insulators usually adopt the scheme of conducting an electrical test on the sample to be tested. In this scheme, the sample to be tested is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/04
Inventor 屠幼萍周益扬王璁王景春龚博徐康泰许卓
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)