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Method for detecting cable aging lateral position

A technology of lateral position and detection method, applied in the direction of material defect testing, material thermal development, etc., can solve the problems of low aging lateral position accuracy, high cost, and many method steps, so as to simplify the calculation and comparison judgment steps, improve the detection accuracy, The effect of reducing the cost of the installation

Active Publication Date: 2019-01-01
广州市兆能有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The purpose of the present invention is to design an improved cable aging position infrared detector for the problems of the invention patent "A Power Line Aging Infrared Detecting Device and Detection Method", the device structure is complicated, the cost is high, the method steps are complicated and the operation is complicated, and the accuracy of the aging lateral position is low. Detection device

Method used

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  • Method for detecting cable aging lateral position
  • Method for detecting cable aging lateral position
  • Method for detecting cable aging lateral position

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Experimental program
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specific Embodiment 1

[0058] This embodiment is an embodiment of a cable aging position detection device based on the law of temperature transfer.

[0059] The cable aging position detection device based on the temperature transfer law of this embodiment, the structural diagram is as follows figure 1 As shown, the cable aging position detection device based on the law of temperature transfer includes an upper ring 1, a middle ring 2 and a lower ring 3 arranged in sequence from top to bottom, and the middle ring 2 is located between the upper ring 1 and the lower ring. In the middle position of the annular ring 3, the cable passes through the upper annular ring 1, the middle annular ring 2 and the lower annular ring 3; the upper annular ring 1 can perform uniform circular motion in its plane, and the upper annular ring 1 is provided with The temperature sensor 11, the lower annular ring 3 can do uniform circular motion in its plane, the upper temperature sensor 31 is arranged on the lower annular ri...

specific Embodiment 2

[0060] This embodiment is an embodiment of a method for detecting the cable aging position based on the law of temperature transfer.

[0061] The cable aging position detection method based on the temperature transfer law of this embodiment is implemented on the cable aging position detection device based on the temperature transfer law described in the first specific embodiment, and the method includes the following steps:

[0062] Step a, heating the cable with the middle ring 2;

[0063] Step b, let the cable cool naturally, the cooling temperature is higher than the temperature before heating;

[0064] Step c, determining the aging lateral position;

[0065] Step d, determining the aging axial position;

[0066] Step e, determine the spatial position according to the aging transverse position and axial position.

specific Embodiment 3

[0067] This embodiment is an embodiment of a method for detecting the cable aging position based on the law of temperature transfer.

[0068] The cable aging position detection method based on the temperature transfer law of this embodiment, on the basis of the second embodiment, further defines that the step c includes the following steps:

[0069] Step c1, obtain series of grayscale data

[0070] The first infrared camera 21 obtains grayscale data k1, the second infrared camera 22 obtains grayscale data k2, the third infrared camera 23 obtains grayscale data k3, the fourth infrared camera 24 obtains grayscale data k4, and the fifth infrared camera 25 obtains grayscale data k5, the sixth infrared camera 26 obtains grayscale data k6;

[0071] Step c2. Obtain the aging lateral position from the horizontal plane where the middle ring is located

[0072] Judge |k1-k2|, |k2-k3|, |k3-k4|, |k4-k5|, |k5-k6| and |k6-k1| two adjacent or separated maximum values, if:

[0073] |k1-k2|...

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Abstract

The invention relates to a method for detecting a cable aging lateral position, belonging to the technical field of electric power and infrared detection. The method comprises the following steps of obtaining a series of grayscale data firstly, i.e., obtaining grayscale data by using a first infrared camera, obtaining grayscale data by using a second infrared camera, obtaining grayscale data by using a third infrared camera, obtaining grayscale data by using a fourth infrared camera, obtaining grayscale data by using a fifth infrared camera, and obtaining grayscale data by using a sixth infrared camera; then obtaining an aging lateral position from a horizontal plane in which a middle annular ring is positioned, and obtaining the aging lateral position through respectively judging two adjacent or separated maximum values in the computation result absolute values of six groups of grayscale data. The method can be used for obtaining the cable aging lateral position and the method lays atechnical foundation for cable aging position detection as important steps for detecting the cable aging position.

Description

[0001] This application is a divisional application of the invention patent application "A Method for Detecting the Aging Position of Cables Based on the Law of Temperature Transfer". [0002] The original filing date: 2016-10-26. [0003] Original application number: 2016109462185. [0004] Invention name of the original application: A method for detecting the aging position of cables based on the law of temperature transfer. technical field [0005] A cable aging lateral position detection method belongs to the technical field of electric power and infrared detection. Background technique [0006] The cable is usually made of two or more wires twisted, each group of wires is insulated from each other, and the outside is covered with an insulating coating. The cable has the characteristics of internal electrification and external insulation. [0007] This structure is beneficial to protect the cable and prolong its service life, but it still cannot completely avoid aging...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/72
CPCG01N25/20G01N25/72
Inventor 王琪
Owner 广州市兆能有限公司
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