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Detection method of power transformer pump type oil plug

A technology for power transformers and transformers, used in transformer/inductor cooling, transformer/inductor components, and liquid varactor machinery, etc., can solve the problems of sudden change of transformer oil flow rate, shortened transformer service life, and weakened transformer cooling effect.

Active Publication Date: 2020-07-07
JINZHOU ELECTRIC POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The formation of the oil slug will weaken the heat dissipation effect of the transformer and shorten the service life of the transformer. After the oil slug falls off, it will cause a sudden change in the oil flow rate of the transformer.

Method used

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  • Detection method of power transformer pump type oil plug
  • Detection method of power transformer pump type oil plug
  • Detection method of power transformer pump type oil plug

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Concrete steps of the present invention are as follows:

[0023] 1. If figure 1 As shown, an oil pump with oil quantity detection function is installed in the middle of each cooling strip of the transformer. The oil pump uses a unified DC power supply. , the oil pump can detect the amount of transformer oil in each time period and send it to the central controller, which is installed in the terminal box next to the transformer.

[0024] 2. After the transformer runs for the first time, the central processor starts timing, and the oil pump starts to be filled with transformer oil. Each oil pump is filled to the rated oil filling quantity successively. The oil pump that reaches the rated oil filling quantity first is controlled by the central controller to stop filling oil, press According to this rule, when all the oil pumps in the heat dissipation strips are filled to the rated oil filling volume, the oil filling process is over, and the central controller records the ...

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Abstract

The invention discloses a power transformer pump type oil plug detection method. The transformer oil plug can be detected, and transformer heat sink strips in oil plug can be accurately located; an oil pump with oil mass detection function is arranged at a middle location of each heat sink strip of the transformer, and a communication module is used for numbering each oil pump; the transformer oilis charged in each oil pump after the transformers runs at the first time, and the oil charging process is finished until the oil pump in each heat sink strip is charged with rated oil charging mass;a central controller records and computes the oil charging amount data of the unit time; various oil pumps discharge oil at the same time, the discharge time is timed, and the next charge oil charging and timing is started after the oil in each oil pump is completely discharged; an oil mass-time state curve of all oil pumps can be generated after the superposition; and the central controller sends out oil pressure abnormity and oil plug formation information and gives an alarm.

Description

technical field [0001] The invention relates to a detection method for a power transformer pump type oil plug. Background technique [0002] At present, in a substation, the temperature of the transformer is reduced by circulating transformer oil through multiple cooling strips on the transformer body. After a period of time, the transformer oil is easy to form embolism, that is, "oil plug". "Oil plugs" are very harmful to transformers, and there is currently no method for detecting and locating oil plugs. The formation of the oil slug will weaken the heat dissipation effect of the transformer and shorten the service life of the transformer. After the oil slug falls off, it will cause a sudden change in the oil flow rate of the transformer. . Contents of the invention [0003] The present invention proposes a method for detecting and locating a pump-type oil slug of a power transformer, which can detect the oil slug of the transformer and accurately locate the heat diss...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V9/00H01F27/12H01F27/22H01F27/40F04B49/06
CPCF04B49/06G01V9/00H01F27/12H01F27/22H01F27/402H01F2027/404
Inventor 韩锦刚赵兴梁浩马识途张博
Owner JINZHOU ELECTRIC POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY
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