CN104789296A - Method for improving thermal conduction property of transformer oil - Google Patents
Method for improving thermal conduction property of transformer oil Download PDFInfo
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- CN104789296A CN104789296A CN201510171523.7A CN201510171523A CN104789296A CN 104789296 A CN104789296 A CN 104789296A CN 201510171523 A CN201510171523 A CN 201510171523A CN 104789296 A CN104789296 A CN 104789296A
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Abstract
The invention aims to provide a method for improving thermal conduction property of transformer oil. According to the method, nano-particles with high thermal conductivity are adopted for modification of transformer insulating oil, namely the transformer oil, so that the thermal conduction capability of the transformer insulating oil is improved; along with the increase of the volume fraction of the nano-particles added in the transformer oil, the thermal conductivity of the transformer oil is obviously improved. Therefore, the method can be used for effectively improving the thermal conduction property of the transformer oil.
Description
Technical field
The invention belongs to electric installation fluid insulation technical field, be specifically related to a kind of method of adding high heat conducting nano particle raising transformer oil heat conductivility.
Background technology
Along with the development of Chinese national economy, electricity needs increases rapidly, power transmission and transforming equipment voltage range and capacity improve constantly, transformer is as power transmission tie, one of equipment most important and the most expensive in power system, therefore, have higher requirement for the reliability of transformer, life-span, capacity, overload capacity and manufacture, transport, installation cost, wherein power system transformer is based on oil transformer.Send a large amount of heats in transformer operational process, along with the increase of transformer voltage grade and capacity, the heat-removal system of traditional transformer has been difficult to the requirement meeting transformer.Transformer heat-sinking capability deficiency causes the temperature rise of transformer insulation oil, insulation paper and winding too high.
First, transformer oil temperature rise is too high can accelerate its oxidizing reaction, produce resin and throw out, weaken the transmission of heat by convection ability of oil, cause transformer temperature rise to strengthen further, accelerate the rate of oxidation of oil, thus the generation of induction shelf depreciation, meanwhile, transformer insulation oil can produce the acidic substance such as water, CO, CO2 in shelf depreciation process, thus accelerate insulation oil deterioration, reduce the insulating power of transformer oil; Insulation paper temperature raises, and make its polymer molecular chain that pyrolysis degraded can occur, water molecules is peeled off from filamentary material, causes embrittlement, accelerated deterioration, and under Composite Field pretends use, insulating power reduces.So transformer heat-sinking capability deficiency can cause Transformer Insulation Aging to accelerate, shorten transformer life, even cause transformer fault, reduce the stability that transformer runs.Secondly, the temperature rise of hot(test)-spot temperature, top-oil temperature and metal parts when transformer heat-sinking capability deficiency causes transformer to run is too high, thus has influence on the overlond running ability of transformer.This be due to the overload quantity of transformer and overload time larger, the thermal value of transformer is larger, thus causes transformer temperature rise to raise, and accelerates the aging of transformer, even causes transformer to break down.Therefore, traditional transformer heat-sinking capability deficiency limits transformer overload ability.Moreover, along with the increase of transformer voltage grade and capacity, the thermal value of transformer increases, because traditional transformer heat-sinking capability is limited, significantly must improve the distance of winding and iron core heat dissipation channel to improve the heat-sinking capability of transformer, this causes volume of transformer, weight to increase.Because volume of transformer is excessive, it is subject to the restriction of obstacle in road width, tunnel, stroke, the speed of a motor vehicle in transportation, causes its transport difficulty large, cost intensive, cycle is long, simultaneously volume of transformer, weight is excessive increases the handling of transformer, the difficulty of installation.In sum, the restriction of traditional transformer heat-sinking capability deficiency is known clearly the reduction of transformer stability, the raising of life-span and overload capacity and volume of transformer, weight.Therefore, the heat-sinking capability improving transformer is imperative.
Summary of the invention
The present invention adopts following technical scheme:
Improve a method for transformer oil heat conductivility, it is characterized in that: high heat conducting nano particle is joined transformer insulation oil and carries out modification, improve the capacity of heat transmission of transformer insulation oil; Described high heat conducting nano particle is AlN, or ZnO, or Al
2o
3.
In a kind of above-mentioned method improving transformer oil heat conductivility, the volume fraction that described high heat conducting nano particle adds is 0.1% ~ 1% of transformer oil.
In a kind of above-mentioned method improving transformer oil heat conductivility, described transformer
For traditional oil-filled transformer, transformer oil complies with No. 25 transformer oil for drawing agate.
In a kind of above-mentioned method improving transformer oil heat conductivility, utilize the AlN nanoparticle that particle diameter is 10nm, carry out No. 25, modification Kelamayi transformer oil with the consumption of transformer oil volume fraction 0.1% ~ 0.5%.
As another kind of technical scheme, utilize the ZnO nanoparticle that particle diameter is 20nm, carry out No. 25, modification Kelamayi transformer oil with the consumption of transformer oil volume fraction 0.1% ~ 1%.
As another kind of technical scheme, utilize the Al that particle diameter is 10nm
2o
3nanoparticle, carrys out No. 25, modification Kelamayi transformer oil with the consumption of transformer oil volume fraction 0.1% ~ 1%.
Tool of the present invention has the following advantages: can effectively improve transformer oil heat conductivility.
Accompanying drawing explanation
Fig. 1 is the thermal conductivity of different nano particle volume integral number nano modification transformer oil.
Embodiment
Below in conjunction with accompanying drawing and specific examples, the present invention will be further described.
Embodiment 1
Utilize the AlN nanoparticle that particle diameter is 10nm, carry out No. 25, modification Kelamayi transformer oil with the consumption of transformer oil volume fraction 0.1% ~ 0.5%, obtained nano modification transformer oil is referred to as nanometer oil.According to the aging bioassay standard DL/T429.6 of the oily open cup of operation, pure transformer oil sample (being called for short: pure oil) and nanometer oil are put into same moisture eliminator.
The thermal conductivity of nano modification transformer oil measured by the KD2 thermal conductance tester adopting DECAGON company of the U.S. to produce, and its resolving power can reach 0.01 Wm
-1k
-1, meet the test request of transformer oil thermal conductivity.As shown in Figure 1, along with the increase adding nano particle volume integral number, the thermal conductivity of nano modification transformer increases acquired results gradually, when volume fraction is 0.5%, and thermal conductivity increase about 7%.
Embodiment 2
Utilize the ZnO nanoparticle that particle diameter is 20nm, carry out No. 25, modification Kelamayi transformer oil with the consumption of transformer oil volume fraction 0.1% ~ 1%, obtained nano modification transformer oil is referred to as nanometer oil.According to the aging bioassay standard DL/T429.6 of the oily open cup of operation, pure transformer oil sample (being called for short: pure oil) and nanometer oil are put into same moisture eliminator.
The thermal conductivity of nano modification transformer oil measured by the KD2 thermal conductance tester adopting DECAGON company of the U.S. to produce, and its resolving power can reach 0.01 Wm
-1k
-1, meet the test request of transformer oil thermal conductivity.As shown in Figure 1, along with the increase adding nano particle volume integral number, the thermal conductivity of nano modification transformer increases acquired results gradually, when volume fraction is 0.5%, and thermal conductivity increase about 9%, when volume fraction increases to 1%, thermal conductivity increase about 12%.
Embodiment 3
Utilize the Al that particle diameter is 10nm
2o
3nanoparticle, carrys out No. 25, modification Kelamayi transformer oil with the consumption of transformer oil volume fraction 0.1% ~ 1%, and obtained nano modification transformer oil is referred to as nanometer oil.According to the aging bioassay standard DL/T429.6 of the oily open cup of operation, pure transformer oil sample (being called for short: pure oil) and nanometer oil are put into same moisture eliminator.
The thermal conductivity of nano modification transformer oil measured by the KD2 thermal conductance tester adopting DECAGON company of the U.S. to produce, and its resolving power can reach 0.01 Wm
-1k
-1, meet the test request of transformer oil thermal conductivity.As shown in Figure 1, along with the increase adding nano particle volume integral number, the thermal conductivity of nano modification transformer increases acquired results gradually, when volume fraction is 0.5%, and thermal conductivity increase about 9%, when volume fraction increases to 1%, thermal conductivity increase about 18%.
Claims (6)
1. improve a method for transformer oil heat conductivility, it is characterized in that: high heat conducting nano particle is joined transformer insulation oil and carries out modification, improve the capacity of heat transmission of transformer insulation oil; Described high heat conducting nano particle is AlN, or ZnO, or Al
2o
3.
2. a kind of method improving transformer oil heat conductivility according to claim 1, is characterized in that: the volume fraction that described high heat conducting nano particle adds is 0.1% ~ 1% of transformer oil.
3. a kind of method improving transformer oil heat conductivility according to claim 1, is characterized in that: described transformer
For traditional oil-filled transformer, transformer oil complies with No. 25 transformer oil for drawing agate.
4. a kind of method improving transformer oil heat conductivility according to claim 1, is characterized in that: utilize the AlN nanoparticle that particle diameter is 10nm, carrys out No. 25, modification Kelamayi transformer oil with the consumption of transformer oil volume fraction 0.1% ~ 0.5%.
5. a kind of method improving transformer oil heat conductivility according to claim 1, is characterized in that: utilize the ZnO nanoparticle that particle diameter is 20nm, carrys out No. 25, modification Kelamayi transformer oil with the consumption of transformer oil volume fraction 0.1% ~ 1%.
6. a kind of method improving transformer oil heat conductivility according to claim 1, is characterized in that: utilize the Al that particle diameter is 10nm
2o
3nanoparticle, carrys out No. 25, modification Kelamayi transformer oil with the consumption of transformer oil volume fraction 0.1% ~ 1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510171523.7A CN104789296A (en) | 2015-04-13 | 2015-04-13 | Method for improving thermal conduction property of transformer oil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510171523.7A CN104789296A (en) | 2015-04-13 | 2015-04-13 | Method for improving thermal conduction property of transformer oil |
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| CN104789296A true CN104789296A (en) | 2015-07-22 |
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| CN201510171523.7A Pending CN104789296A (en) | 2015-04-13 | 2015-04-13 | Method for improving thermal conduction property of transformer oil |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105647613A (en) * | 2016-01-12 | 2016-06-08 | 国网河南省电力公司电力科学研究院 | Method for preparing aluminum oxide nano particle modification transformer oil |
| CN106544143A (en) * | 2016-11-19 | 2017-03-29 | 国网河南省电力公司周口供电公司 | A kind of nano modification transformer oil and preparation method thereof |
| CN106590834A (en) * | 2016-12-01 | 2017-04-26 | 东莞市佳乾新材料科技有限公司 | Preparation method of high thermal conductivity transformer oil |
| CN108504427A (en) * | 2018-05-15 | 2018-09-07 | 国网山东省电力公司荣成市供电公司 | A kind of nanometer particle-modified transformer oil and preparation method thereof |
| CN110643416A (en) * | 2019-09-27 | 2020-01-03 | 国网四川省电力公司电力科学研究院 | Modified insulating oil, preparation method and application thereof |
| CN112038060A (en) * | 2020-09-08 | 2020-12-04 | 国网上海市电力公司 | Distribution transformer overload capacity improving method |
| CN112126255A (en) * | 2019-06-09 | 2020-12-25 | 中国科学院宁波材料技术与工程研究所 | Preparation method of ultrafast self-repairing material and ultrafast self-repairing film layer on surface of substrate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060211585A1 (en) * | 2003-09-12 | 2006-09-21 | Renewable Lubricants, Inc. | Vegetable oil lubricant comprising Fischer Tropsch synthetic oils |
| CN102637469A (en) * | 2012-04-11 | 2012-08-15 | 华北电力大学 | Method for improving ageing-resistant performance of transformer oil |
| CN104240910A (en) * | 2014-10-10 | 2014-12-24 | 天津学子电力设备科技有限公司 | High thermal conductivity insulating liquid amorphous alloy oil-immersed transformer |
-
2015
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060211585A1 (en) * | 2003-09-12 | 2006-09-21 | Renewable Lubricants, Inc. | Vegetable oil lubricant comprising Fischer Tropsch synthetic oils |
| CN102637469A (en) * | 2012-04-11 | 2012-08-15 | 华北电力大学 | Method for improving ageing-resistant performance of transformer oil |
| CN104240910A (en) * | 2014-10-10 | 2014-12-24 | 天津学子电力设备科技有限公司 | High thermal conductivity insulating liquid amorphous alloy oil-immersed transformer |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105647613A (en) * | 2016-01-12 | 2016-06-08 | 国网河南省电力公司电力科学研究院 | Method for preparing aluminum oxide nano particle modification transformer oil |
| CN106544143A (en) * | 2016-11-19 | 2017-03-29 | 国网河南省电力公司周口供电公司 | A kind of nano modification transformer oil and preparation method thereof |
| CN106544143B (en) * | 2016-11-19 | 2019-03-19 | 国网河南省电力公司周口供电公司 | A kind of nano modification transformer oil and preparation method thereof |
| CN106590834A (en) * | 2016-12-01 | 2017-04-26 | 东莞市佳乾新材料科技有限公司 | Preparation method of high thermal conductivity transformer oil |
| CN108504427A (en) * | 2018-05-15 | 2018-09-07 | 国网山东省电力公司荣成市供电公司 | A kind of nanometer particle-modified transformer oil and preparation method thereof |
| CN108504427B (en) * | 2018-05-15 | 2021-04-09 | 国网山东省电力公司荣成市供电公司 | Nanoparticle modified transformer oil and preparation method thereof |
| CN112126255A (en) * | 2019-06-09 | 2020-12-25 | 中国科学院宁波材料技术与工程研究所 | Preparation method of ultrafast self-repairing material and ultrafast self-repairing film layer on surface of substrate |
| CN110643416A (en) * | 2019-09-27 | 2020-01-03 | 国网四川省电力公司电力科学研究院 | Modified insulating oil, preparation method and application thereof |
| CN112038060A (en) * | 2020-09-08 | 2020-12-04 | 国网上海市电力公司 | Distribution transformer overload capacity improving method |
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Application publication date: 20150722 |