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Digital light gas protection method and device for transformer

A gas protection and transformer technology, which is applied to emergency protection circuit devices, measuring devices, lubrication indicating devices, etc., can solve problems such as failure to timely and accurately reflect transformer faults, and achieve the effect of accurate judgment results.

Active Publication Date: 2021-02-09
NARI TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the deficiencies in the prior art, the present invention provides a transformer digital light gas protection method and protection device, which solves the problem that the existing transformer light gas protection method cannot accurately reflect transformer faults in time

Method used

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  • Digital light gas protection method and device for transformer
  • Digital light gas protection method and device for transformer
  • Digital light gas protection method and device for transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] like figure 1 As shown, a transformer digital light gas protection method includes the following steps:

[0057] Step 1, obtaining the gas component content derived from the gas chamber of the transformer gas relay;

[0058] After the light gas alarm of the transformer gas relay, enough gas has accumulated in the gas relay to cause the light gas alarm, and then the gas in the gas chamber is exported to the gas extraction box by discharging the transformer oil in the gas extraction box; The components and the content of each component are detected online to obtain the gas component content derived from the gas chamber of the transformer gas relay; at the same time, the oil sample inside the transformer oil tank can be taken to detect the concentration of dissolved gas components in the oil;

[0059] The composition content of the gas includes: hydrogen H 2 content, total hydrocarbon content, acetylene C 2 h 2 content;

[0060] Step 2, judging the severity of the tra...

Embodiment 2

[0099] like figure 2As shown, a transformer digital light gas protection device includes: a gas extraction box 2 connected to the gas relay gas chamber through a first pipeline 1, an oil-resistant gas sensor 3 connected to the gas extraction box 2, and installed in the gas extraction box 2 The internal liquid level sensor 4, the solenoid valve 5 located on the outlet pipe at the lower end of the gas extraction box 2, the control device 7 and the power supply 8; the control device 7 and the gas relay, the solenoid valve 5, the oil-resistant gas sensor 3 and the liquid level sensor 4 are respectively Electrical connection; the power supply 8 is used to provide power for the control device 7, the solenoid valve 5, the oil-resistant gas sensor 3 and the liquid level sensor 4;

[0100] The upper end of the air extraction box 2 is also provided with an air outlet 6, and the air outlet 6 is used to manually extract air from the air extraction box 2 or release the gas in the air extr...

Embodiment 3

[0112] like image 3 As shown, a transformer digital light gas protection device, including:

[0113] The air intake box 2 connected to the air chamber of the gas relay through the first pipeline 1, the liquid level sensor 4 installed inside the air intake box 2, the second liquid level sensor 15 located at the top of the air intake box 2, and the second liquid level sensor 15 located in the air intake box 2 The solenoid valve 5 on the outlet pipeline at the lower end, the gas outlet 6 above the gas extraction box 2, the second electromagnetic valve 10 positioned on the outlet pipeline at the upper end of the gas extraction box 2, and the second electromagnetic valve 10 connected to the second electromagnetic valve 10 through the third pipeline 11 Two gas-taking boxes 14, an oil-resistant gas sensor 12 installed on the second gas-taking box 14, an air pump 13 connected to the second gas-taking box 14, a control device 7 and a power supply 8;

[0114] The second electromagneti...

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Abstract

The invention discloses a transformer digital light gas protection method and protection device. The protection device comprises a gas taking box connected with a gas chamber of a gas relay through afirst pipeline, an oil-resistant gas sensor connected with the gas taking box, a liquid level sensor installed in the gas taking box, an electromagnetic valve located on an outlet pipeline at the lower end of the gas taking box, a control device and a power supply. The control device is electrically connected with the electromagnetic valve, the oil-resistant gas sensor and the liquid level sensorrespectively; the power supply is used for supplying power to the control device, the electromagnetic valve, the oil-resistant gas sensor and the liquid level sensor and acquiring the content of gas components led out of the gas chamber of the transformer gas relay; The severity of the transformer fault is judged according to the gas component content, and the transformer is removed when the transformer fault is judged to be a serious fault. And the problem of transformer faults can be timely and accurately reflected.

Description

technical field [0001] The invention relates to the technical field of transformer on-line monitoring and transformer relay protection, in particular to a digital light gas protection method and protection device. Background technique [0002] Gas protection is one of the main protections for transformer protection. The physical quantity mainly based on light gas protection is the gas volume accumulated in the gas relay. When gas accumulates in the gas relay, the float of the gas relay moves downward under the action of the buoyancy of the oil, and drives the weight on the other side of the lever to move upward. When the gas volume reaches the set value, the magnet on the weight will attract the reed switch, thus sending out an alarm signal. The current light gas protection does not make full use of the composition information of the gas, so it can only alarm but not trip. When the transformer leaks, etc., the gas will also accumulate in the gas relay, resulting in misope...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/04G01R31/00G01N33/00G01F23/00
CPCH02H7/04G01R31/00G01N33/0057G01F23/00
Inventor 郑玉平吴崇昊林启明潘书燕吴通华滕贤亮龙锋周斌李雪飞
Owner NARI TECH CO LTD
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