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Composite insulator defect detection equipment and method, and unmanned aerial vehicle

A composite insulator and defect detection technology, applied in the field of detection, can solve problems that threaten the safe operation of the power grid, and achieve the effect of improving the speed of defect detection

Pending Publication Date: 2021-04-13
STATE GRID QINGHAI ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such defect accidents have occurred many times, seriously threatening the safe operation of the power grid

Method used

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  • Composite insulator defect detection equipment and method, and unmanned aerial vehicle
  • Composite insulator defect detection equipment and method, and unmanned aerial vehicle
  • Composite insulator defect detection equipment and method, and unmanned aerial vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] refer to figure 1 , figure 1 It is a schematic diagram of the composite insulator defect detection device 10 provided in the first embodiment. The composite insulator defect detection equipment 10 includes a microwave emitting device 11 , an infrared imaging device 12 , a detection device 13 and a handle 14 . The infrared imaging device 12 is electrically connected to the detection device 13 . The microwave emitting device 11 and the infrared imaging device 12 are disposed on one side of the detection device 13 , and the handle 14 is disposed on the other side of the detection device 13 .

[0021] The microwave transmitting device 11 is used for transmitting microwave signals to the composite insulator.

[0022] In this embodiment of the application, the term "microwave" refers to electromagnetic waves with a frequency range of 300MHz-300GHz, and their propagation in a medium usually involves processes such as transmission, scattering, and reflection. When microwave...

Embodiment 2

[0053] refer to image 3 , image 3 It is a flow chart of the composite insulator defect detection method according to the second embodiment of the present application. The composite insulator defect detection method comprises the following steps:

[0054] S31, transmitting a microwave signal to the composite insulator.

[0055] The microwave signal can cause an obvious temperature rise at the decayed defect part of the composite insulator, while the temperature rise at the normal part is small. The temperature difference between the decayed defect part and the normal part is significant, thus ensuring the accuracy of the test result.

[0056] It can be understood that, in the embodiment of the present application, the microwave signal may be transmitted through a microwave oven or a microwave transmitter.

[0057] S32. Acquire an infrared heat distribution image of the composite insulator.

[0058] It can be understood that, in this embodiment of the present application,...

Embodiment 3

[0065] refer to Figure 4 , Figure 4 A schematic structural diagram of the drone 40 provided in Embodiment 3 of the present application. The drone 40 includes a microwave emitting device 11 , an infrared imaging device 12 and a processor 41 . The processor 41 , the microwave emitting device 11 and the infrared imaging device 12 together constitute the composite insulator defect detection device 10 as described in the first embodiment.

[0066] In the embodiment of the present application, by miniaturizing the transmitting head of the microwave transmitting device 11, the microwave signal emitted by the microwave transmitting device 11 is focused on a small area, and the microwave output of the microwave transmitting device 11 is adjusted. Power, so that the microwave power scattered to the ground meets safety standards.

[0067] It should be noted that the specific implementation manner in the first embodiment may also be applicable to the second and third embodiments.

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Abstract

The invention discloses composite insulator defect detection equipment and method, and an unmanned aerial vehicle, and relates to the technical field of composite insulator defect detection. The composite insulator defect detection equipment provided by the embodiment of the invention comprises a microwave emission device, an infrared imaging device and a detection device. The microwave emission device is used for emitting a microwave signal to a composite insulator so as to heat the composite insulator; the infrared imaging device is used for acquiring an infrared thermal distribution image of the composite insulator; and the detection device is used for judging whether the composite insulator has a rotten defect or not according to the infrared thermal distribution image. According to the invention, the composite insulator is heated through microwaves so that a temperature difference is generated between a defective part and a normal part in the composite insulator, the composite insulator with defects inside can be effectively detected, and the positions of the defects can be determined.

Description

technical field [0001] The present application relates to the field of detection technology, in particular to a composite insulator defect detection device, method and unmanned aerial vehicle. Background technique [0002] Composite insulators are widely used because of their excellent hydrophobic properties, light weight, convenient transportation and installation, and play a role in protecting power systems and equipment. However, in the long-term operation of composite insulators, affected by external stress factors, there will be internal and external aging phenomena, which may even cause the insulation performance and mechanical strength of composite insulators to decline, and accidents such as flashover or broken strings may occur. The internal decay defect of the composite insulator is externally manifested as high temperature heating at the high voltage side during live operation, internally manifested as yellowing and blackening of the mandrel after dissection, like...

Claims

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Application Information

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IPC IPC(8): G01R31/12G01J5/00B64C39/02
CPCG01R31/1218G01R31/1245G01J5/00B64C39/02B64U2101/00
Inventor 蒋玲梅红伟王生富王黎明张成磊李子岳朱广秀源吴焱松马旭东包正红王生杰
Owner STATE GRID QINGHAI ELECTRIC POWER
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