CN2185918Y - Power transformer with built-in lightning arrester - Google Patents
Power transformer with built-in lightning arrester Download PDFInfo
- Publication number
- CN2185918Y CN2185918Y CN 93247114 CN93247114U CN2185918Y CN 2185918 Y CN2185918 Y CN 2185918Y CN 93247114 CN93247114 CN 93247114 CN 93247114 U CN93247114 U CN 93247114U CN 2185918 Y CN2185918 Y CN 2185918Y
- Authority
- CN
- China
- Prior art keywords
- transformer
- lightning
- lightning arrester
- arrester
- zinc oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000011787 zinc oxide Substances 0.000 claims abstract description 16
- 238000004804 winding Methods 0.000 claims description 10
- 230000009466 transformation Effects 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000002411 adverse Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
A lightning protection power transformer is provided with zinc oxide arresters on the high-voltage side and the low-voltage side respectively and is arranged in a transformer body. Because the lightning arrester is arranged in the transformer body, the influence of the external severe environment on the lightning arrester is reduced, the service life is prolonged, the operation reliability of the transformer is improved, the lightning protection performance of the transformer is enhanced, and the lightning damage rate can be reduced to 0.1%.
Description
The utility model belongs to a kind of anti-lightning strike power transformer.
Existing power transformer is reduced the loss for anti-lightning strike, generally in the high-pressure side of transformer zinc oxide arrester is installed." a kind of distribution transformer that the has lightning proof " patent (patent No. 89105752.8) of Hunan Province Jishou City Qin Xiang circle application is except that the transformer high-voltage side is installed zinc oxide arrester, also one group of increase is identical with the low pressure winding number of phases on iron core, around to opposite balance winding, to improve the anti-lightning strike adaptability and the detecting reliability of transformer, but it is external that the zinc oxide arrester of the power transformer that these are anti-lightning strike is installed in transformer, the lightning arrester lead-in wire is long, existence causes the big defective of residual voltage because of inductive drop, also be difficult to overcome of the influence of outside adverse circumstances, cause shorten useful life lightning arrester.
The purpose of this utility model provides a kind ofly can further reduce the thunderbolt spoilage, reduce maintenance workload to lightning arrester, improve operational reliability, save the anti-lightning strike power transformer of cost.
The technical solution of the utility model is in the high-pressure side of power transformer and low-pressure side zinc oxide arrester (1), (2) to be installed respectively, and is placed in the transformation body; One end of on high-tension side each lightning arrester (1) is connected with the end of incoming cables of the every single line of high pressure winding (3), and lightning arrester (1) other end connects together and is connected to earth terminal (5) altogether; One end of each lightning arrester (2) of low-pressure side is connected with the leading-out terminal of each phase line of low pressure winding (4), and lightning arrester (2) other end links to each other with the neutral point of low pressure winding (4) and is connected to earth terminal (5) altogether.
In order to make zinc oxide arrester can adopt zero-clearance zinc oxide lightning arrester at the warm medium-term and long-term steady operation of heating oil of power transformer.
The utility model when being struck by lightning, when lightning wave from the high-pressure side or low-pressure side phase line when entering, the thunder and lightning high pressure makes zinc oxide arrester (1) or (2) conducting rapidly, lightning current goes into ground by lightning arrester.Because lightning arrester is placed in the transformation body, both eliminate lightning arrester and be contained in the external influence that causes the long generation inductive drop of lead-in wire of transformer, avoid residual voltage excessive, alleviated of the influence of outside adverse circumstances again to lightning arrester, increase the service life, improved the transformer operational reliability, strengthened the anti-lightning strike performance of transformer, the thunderbolt spoilage can be reduced to 0.1% by original 0.7%.
Fig. 1 is a circuit interconnect pattern of the present utility model.
1 is transformer high-voltage side zinc oxide arrester among the figure, and 2 is the low-pressure side zinc oxide arrester, and 3 is the transformer high-voltage winding, and 4 is the transformer low voltage winding, and 5 is earth terminal.
Embodiment of the present utility model is at Y, 10 kilovolts of sides in the yno tie lines transformer are installed zero-clearance zinc oxide lightning arrester Y5W-12.7,400 volts of sides zero-clearance zinc oxide lightning arrester Y3W-0.28 is installed, adopts epoxy encapsulation on the structure, place in the transformation body.
Claims (2)
1, a kind of anti-lightning strike power transformer is made up of transformer and zinc oxide arrester, it is characterized in that the high-pressure side of transformer and low-pressure side are equipped with zinc oxide arrester respectively, and places in the transformation body; One end of on high-tension side each lightning arrester is connected with the end of incoming cables of each phase line of high pressure winding, and the lightning arrester other end connects together and is connected to earth terminal altogether; One end of each lightning arrester of low-pressure side is connected with the leading-out terminal of each phase line of low pressure winding, and the lightning arrester other end links to each other with the neutral point of low pressure winding and is connected to earth terminal altogether.
2, by the described power transformer of claim 1, it is characterized in that zinc oxide arrester is a zero-clearance zinc oxide lightning arrester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93247114 CN2185918Y (en) | 1993-12-07 | 1993-12-07 | Power transformer with built-in lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93247114 CN2185918Y (en) | 1993-12-07 | 1993-12-07 | Power transformer with built-in lightning arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2185918Y true CN2185918Y (en) | 1994-12-21 |
Family
ID=33819600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93247114 Expired - Fee Related CN2185918Y (en) | 1993-12-07 | 1993-12-07 | Power transformer with built-in lightning arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2185918Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617875A (en) * | 2013-11-27 | 2014-03-05 | 特变电工衡阳变压器有限公司 | Method for restraining neutral point electric potential drifting of low-voltage winding |
| CN104064333A (en) * | 2014-06-06 | 2014-09-24 | 合肥鑫伟电力设备有限公司 | Outdoor anti-thunder transformer |
-
1993
- 1993-12-07 CN CN 93247114 patent/CN2185918Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617875A (en) * | 2013-11-27 | 2014-03-05 | 特变电工衡阳变压器有限公司 | Method for restraining neutral point electric potential drifting of low-voltage winding |
| CN104064333A (en) * | 2014-06-06 | 2014-09-24 | 合肥鑫伟电力设备有限公司 | Outdoor anti-thunder transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |