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Transformer demagnetization device

A demagnetization device, transformer technology, applied in the direction of magnetic objects, electrical components, circuits, etc., can solve the problem that the residual magnetism of the transformer cannot be completely eliminated, and achieve the effect of convenient and quick use, elimination of residual magnetism, and guarantee of test quality

Active Publication Date: 2016-08-03
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problems existing in the above-mentioned prior art, in order to better complete the test work and ensure safe production, and provides a transformer demagnetization device, which solves the problem that the transformer remanence cannot be completely eliminated in the prior art

Method used

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Examples

Experimental program
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Embodiment

[0021] Such as Figure 1-2 As shown, the output terminals of the power conversion unit, the man-machine dialogue unit and the degaussing detection unit are all connected to the control acquisition unit, and the output terminals of the control acquisition unit are connected to the display unit and the degaussing source; the output terminals of the degaussing source are connected to the degaussing detection unit and the degaussing output unit.

[0022] The power conversion unit converts the AC220V into the voltage required by other units to provide energy guarantee for each unit.

[0023] The man-machine dialogue unit realizes the dialogue between the device and the human, and the human realizes the degaussing by setting the man-machine dialogue unit and controlling the work of the device.

[0024] The degaussing detection unit detects various parameters of the degaussing process in real time.

[0025] The control acquisition unit controls the work of each unit through the CPU...

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Abstract

The invention relates to a transformer demagnetization device, and particularly relates to a demagnetization device for no-load and load tests of a transformer during ex-factory inspection or fault identification. The transformer demagnetization device has a structure that the output ends of a power conversion unit, a man-machine conversation unit and a demagnetization detection units are all connected with a control acquisition unit; the output end of the control acquisition unit is connected with a display unit and a demagnetization source; and the output end of the demagnetizing source is connected with the demagnetization detection unit and a demagnetization output unit. According to the device, the principle of DC (direct current) variable frequency attenuation method is adopted, in the method, the steps of alternately changing the DC polarities, and gradually reducing the amplitude of DC output current can be realized. The field application for a plurality of times approve that the transformer demagnetization device has the advantages of accurate test data and high convenience and quickness in use, and can ensure the test quality.

Description

technical field [0001] The invention relates to a device demagnetization device in a power system, in particular to a transformer demagnetization device for no-load and load tests when a transformer leaves the factory or when a fault is identified, and belongs to the field of electric power applications. Background technique [0002] It is very easy to generate residual magnetism after power transformer shutdown, failure or test, especially a large amount of residual magnetism will be generated inside the transformer that has passed the DC resistance or transformation ratio test. When the residual magnetism is too large, it will have a great impact on the test data of the transformer's no-load and load tests, and even make the voltage unable to increase. This situation is not uncommon in actual work. Therefore, eliminating the residual magnetism of the transformer is an urgent problem to be solved. Contents of the invention [0003] The present invention aims at the proble...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F13/00
Inventor 王清昊张运山李志轩刘国斌张华裴玉杰张佳岩海天舒李智毕诗洋
Owner STATE GRID CORP OF CHINA
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