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Signal acquisition device for transformer partial discharge online monitoring device

A monitoring device and signal acquisition technology, which is applied to measurement devices, measurement device casings, and testing using acoustic measurement, etc., can solve the problems of poor integration and inconvenience of precision detection instruments, and achieve the effect of improving adsorption effects.

Active Publication Date: 2021-11-19
山东金科电气股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, in order to monitor the partial discharge of the transformer, it is necessary to use a partial discharge signal acquisition device. The existing conventional partial discharge detection method has pulse current method, DGA method and ultrasonic method, etc. These detection methods all need to contact the transformer or face the transformer at a fixed point at a close distance. problems such as poor integration

Method used

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  • Signal acquisition device for transformer partial discharge online monitoring device
  • Signal acquisition device for transformer partial discharge online monitoring device
  • Signal acquisition device for transformer partial discharge online monitoring device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] see Figure 1-7 As shown, a signal acquisition device used for transformer local on-line monitoring device includes a box body 1, a display panel 2 and a detection head 3; the inside of the box body 1 is provided with a rotating groove; the inner rotation of the rotating groove A display panel 2 is connected; the inside of the box body 1 is provided with a first storage tank; the inside of the first storage tank is provided with a detection head 3; the inside of the box body 1 is connected with a reel 4 for rotation; The inside of the reel 4 is provided with a spring piece 5; the end of the spring piece 5 is connected with a wire 6, and the wire 6 is fixedly connected with the probe head 3; the side of the box 1 is provided with a conductive cavity; the box body 1 is provided with a first through hole at the position of the conductive cavity; the inside of the first through hole is slidably connected with a first joint 7; the inside of the conductive cavity is provided ...

Embodiment 2

[0042] see Figure 8 As shown, the surface of the connecting wire 6 is fixed with uniformly arranged air bags 36; the surface of the connecting wire 6 is provided with air holes at the positions of the air bags 36, and the air holes will be connected to the air bag 36 and the connecting wire 6. The internal pipes 25 are connected to each other; during work, by setting the air bag 36, when the lead wire 6 is squeezed by the guide column 17, the gas inside the air bag 36 will be introduced into the pipe 25 through the air hole, so as to promote the cleaning of the inside of the pipe 25 and reduce the pressure of the pipe. 25 Risk of clogging.

[0043] Working principle, when partial discharge detection is required, the staff first opens the box body 1, and then presses the first joint 7 so that the first joint 7 is connected to the first connecting plate 8, and then manually takes out the detection device from the inside of the box body 1. Head 3, since the probe head 3 is conn...

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Abstract

The invention relates to the field of partial discharge detectors, in particular to a signal acquisition device for a transformer partial discharge online monitoring device. The signal acquisition device comprises a box body, a display panel and a detection head, wherein a rotating groove is formed in the box body, the display panel is rotationally connected to the interior of the rotating groove; a first storage groove is formed in the box body; the detection head is arranged in the first storage groove; the interior of the box body is rotationally connected with a reel. A spring piece is arranged in the reel; the end part of the spring piece is connected with a guide connecting wire, and the guide connecting wire is fixedly connected with the detection head. According to the signal acquisition device, the integrated design between parts of the partial discharge on-line monitoring device is effectively realized, so that the signal acquisition part detection head can be integrally connected with the box body, the circuit conduction connection can be directly controlled in the detection process, the connection circuit is directly disconnected after the detection is completed, and meanwhile, under the action of the reel, the conduction connection line is automatically rewound, so that the detection site is always in a regular state.

Description

technical field [0001] The invention relates to the field of partial discharge detectors, in particular to a signal acquisition device used for transformer partial discharge on-line monitoring devices. Background technique [0002] According to national standards, large-scale power transformers of 110kV and above must undergo partial discharge tests. Now the contract requires that the partial discharge of high and medium voltage transformers should be less than 100PC. There may be some insulation weaknesses in the transformer insulation structure. The discharge will occur first, but the entire insulation penetration breakdown will not be formed immediately. This kind of discharge limited to the local position of the insulation is called partial discharge. [0003] According to CN211698053U, a kind of transformer local on-line monitoring device, the support rod composed of a plurality of connecting pipes is placed between the second clamping block and the first clamping block...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G01R31/14G01R1/04
CPCG01R31/1209G01R31/14G01R1/0408
Inventor 孙思贤赵发航孙兵兵
Owner 山东金科电气股份有限公司