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Electrical equipment partial discharge fault field detection and positioning device and method

A technology for electrical equipment and on-site inspection, which is applied to measuring devices, using optical methods for testing, and measuring electricity. It can solve problems such as poor timeliness, low detection accuracy, and difficulty in locating fault points to prevent catastrophic results.

Active Publication Date: 2021-06-25
SHENYANG FIRE RES INST OF MEM
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Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a device and method for on-site detection and location of partial discharge faults of electrical equipment, aiming to solve the problems of low detection accuracy and poor timeliness existing in the existing detection technology of partial discharge faults of electrical equipment And it is difficult to locate the fault point and other problems

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  • Electrical equipment partial discharge fault field detection and positioning device and method
  • Electrical equipment partial discharge fault field detection and positioning device and method
  • Electrical equipment partial discharge fault field detection and positioning device and method

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Embodiment Construction

[0033] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings.

[0034] figure 1 It is a structural block diagram of the on-site detection and positioning device for partial discharge faults of electrical equipment of the present invention. The on-site detection and positioning device for partial discharge faults of electrical equipment (hereinafter referred to as "the device") includes an ultrasonic receiving array, a signal conditioning module, A / D conversion module, image acquisition module and central processing unit. The device is portable or fixed-installed. When using it, it only needs to be placed in front of the electrical equipment under test, without facing the faulty part.

[0035] The ultrasonic receiving array is used to collect ultrasonic signals; the ultrasonic receiving array is arranged according to a certain spatial position by MEMS ultrasonic s...

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Abstract

The invention discloses an electrical equipment partial discharge fault field detection and positioning device and method, and relates to the technical field of electrical equipment partial discharge detection and positioning. The device comprises an ultrasonic receiving array used for collecting ultrasonic signals; a signal conditioning module which is used for filtering and amplifying the ultrasonic signals acquired by the ultrasonic receiving array; an A / D conversion module which is used for performing analog-to-digital conversion on the pulse electric signal sent by the signal conditioning module; an image acquisition module which is used for acquiring video image signals of the electrical equipment in real time and is arranged at the central position of the central row of the ultrasonic receiving array; a double-shaft tilt angle sensor which is used for measuring the space angle of the device; and a central processing unit which comprises a signal processing module and an information fusion module. When the device is used, the device does not need to directly face a fault part, and can quickly detect and accurately position partial discharge fault positions of different types of electrical equipment on site as long as the device is placed in front of a detected object, and visual display is carried out.

Description

technical field [0001] The invention relates to the technical field of partial discharge detection and positioning of electrical equipment, in particular to an on-site detection and positioning device and method for partial discharge faults of electrical equipment. Background technique [0002] Partial Discharge (PD, referred to as PD) is a discharge phenomenon caused by the degradation of insulation performance in the local area of ​​the insulating medium in electrical equipment due to aging and mechanical damage. Different from breakdown or flashover, partial discharge is a tiny breakdown in a local area of ​​the insulating medium and is the initial phenomenon of insulation degradation. Partial discharge is mostly caused by the aging of the insulating medium and uneven distribution of the electric field. If early detection and early warning are not possible, it will cause serious harm to electrical equipment, resulting in serious consequences such as electrical equipment f...

Claims

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Application Information

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IPC IPC(8): G01R31/12
CPCG01R31/1209G01R31/1218G01R31/1227Y04S10/52
Inventor 许磊王勇俞
Owner SHENYANG FIRE RES INST OF MEM
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