CN201733072U - Power transformer neutral point gap protector - Google Patents
Power transformer neutral point gap protector Download PDFInfo
- Publication number
- CN201733072U CN201733072U CN2010202746381U CN201020274638U CN201733072U CN 201733072 U CN201733072 U CN 201733072U CN 2010202746381 U CN2010202746381 U CN 2010202746381U CN 201020274638 U CN201020274638 U CN 201020274638U CN 201733072 U CN201733072 U CN 201733072U
- Authority
- CN
- China
- Prior art keywords
- discharging gap
- adjustable
- neutral point
- gap
- current transformer
- 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
- 230000007935 neutral effect Effects 0.000 title claims abstract description 20
- 230000001012 protector Effects 0.000 title abstract 5
- 238000007599 discharging Methods 0.000 claims abstract description 43
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000011787 zinc oxide Substances 0.000 claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 4
- 230000001629 suppression Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 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 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to a power transformer neutral point gap protector which is particularly suitable for the suppression and protection of neutral point overvoltage of the power transformer with voltage class of 110kV and more than 110kV. The power transformer neutral point gap protector adopts the technical scheme that the protector comprises a disconnecting switch (2) arranged on a device base (1), a zinc oxide arrester (3), a current transformer (4), a discharging gap (5) with an adjustable distance, a discharging gap low fulcrum bar (6) with an adjustable height; the discharging gap with an adjustable distance is horizontally arranged between the zinc oxide arrester and the current transformer and supported by the discharging gap low fulcrum bar (6) with the adjustable height; and the discharging gap low fulcrum bar with an adjustable height is arranged on the current transformer. The power transformer neutral point gap protector can adjust the height of the discharging gap, can be matched with the zinc oxide arrester with different sizes and the current transformer for using, increases the standardization degree of products, adds the maintainability of products and is an ideal power device.
Description
Affiliated technical field:
The utility model relates to a kind of power transformer neutral point gap protection device, especially is applicable to inhibition and protection to the neutral point overvoltage of 110kV and above electric pressure power transformer.
Background technology:
The neutral point of 110kV and above power transformer generally adopts direct grounding way, because relay protection setting configuration and prevent the requirement of aspect such as communication interference in order to limit single-phase short circuit current, wherein has part transformer adopting isolated neutral mode.Under this operational mode; because thunderbolt, single-phase grounding fault etc. can cause neutral point overvoltage; and transformer is graded insulation mostly, so overvoltage causes very big threat to the insulation of neutral point, must use the gap protection device to prevent that accident from taking place.Traditional transformer neutral point gap protection device mainly is made up of several parts such as isolating switch, zinc oxide arrester, discharging gap summation current transformers; when device assembles, adopt consolidation style to connect; when some component wear of equipment; in the time of need damaging element and change some; because the component size that the different producers that supply provide all is not quite similar; therefore element replacement is very difficult, often influences user's normal use.
The utility model content:
The utility model purpose provides a kind of power transformer neutral point gap protection device, is user-friendly to and keeps in repair, and is convenient to assembling, option, solves the problems referred to above that exist in the background technology.
The technical solution of the utility model is: a kind of power transformer neutral point gap protection device comprises isolating switch, zinc oxide arrester, current transformer and adjustable discharging gap, the adjustable for height discharging gap lower fulcrum bar of distance that is installed on the device pedestal; the adjustable discharging gap level of distance is installed between the zinc oxide arrester summation current transformer; discharging gap is supported by adjustable for height discharging gap lower fulcrum bar, and adjustable for height discharging gap lower fulcrum bar is arranged on the current transformer.
Copper bar by corresponding specification between isolating switch and the zinc oxide arrester is electrically connected, and is connected adjustable discharging gap one end of distance, and adjustable for height discharging gap lower fulcrum bar is connected the adjustable discharging gap other end of distance.
The utility model also is provided with sleeve, check bolt, and the discharging gap lower fulcrum bar is processed with external screw thread, can screw in the female sleeve of processing that is cemented in current transformer by bolt, with check bolt with fixed.
The utility model has adopted adjustable for height discharging gap structural design, can adjust the height of discharging gap, and it can be used with zinc oxide arrester, the current transformer of different size.
The beneficial effects of the utility model: the height that can adjust discharging gap according to the transformer neutral point gap protection device of the utility model design; can be used with zinc oxide arrester, the current transformer of different size; improved the standardization level of product; having increased the maintainability of product, is a kind of desirable power equipment.
Description of drawings:
Accompanying drawing is the utility model example structure schematic diagram;
1. device pedestals among the figure, 2. isolating switch, 3. zinc oxide arrester, 4. current transformer, 5. discharging gap, 6. discharging gap lower fulcrum bar, 7. sleeve, 8. check bolt 9. copper bars.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail by embodiment.
In an embodiment; a kind of power transformer neutral point gap protection device comprises isolating switch 2, zinc oxide arrester 3, current transformer 4 and adjustable discharging gap 5, the adjustable for height discharging gap lower fulcrum bar 6 of distance that is installed on the device pedestal 1; the adjustable discharging gap level of distance is installed between the zinc oxide arrester summation current transformer; discharging gap is supported by adjustable for height discharging gap lower fulcrum bar, and adjustable for height discharging gap lower fulcrum bar is arranged on the current transformer.Be electrically connected by copper bar 9 between isolating switch and the zinc oxide arrester, and be connected adjustable discharging gap one end of distance, adjustable for height discharging gap lower fulcrum bar is connected the adjustable discharging gap other end of distance.The utility model also is provided with sleeve 7, check bolt 8, and the discharging gap lower fulcrum bar is processed with external screw thread, can screw in the female sleeve of processing that is cemented in current transformer by bolt, with check bolt with fixed.
In use, by regulating the height of discharging gap lower fulcrum bar, use with zinc oxide arrester, the current transformer that cooperates different size.
Claims (3)
1. power transformer neutral point gap protection device; it is characterized in that comprising the isolating switch (2), zinc oxide arrester (3), current transformer (4) and adjustable discharging gap (5), the adjustable for height discharging gap lower fulcrum bar (6) of distance that are installed on the device pedestal (1); the adjustable discharging gap level of distance is installed between the zinc oxide arrester summation current transformer; discharging gap is supported by adjustable for height discharging gap lower fulcrum bar, and adjustable for height discharging gap lower fulcrum bar is arranged on the current transformer.
2. the power transformer neutral point gap protection device according to claim 1; it is characterized in that being electrically connected by copper bar (9) between isolating switch and the zinc oxide arrester; and be connected adjustable discharging gap one end of distance, adjustable for height discharging gap lower fulcrum bar is connected the adjustable discharging gap other end of distance.
3. according to claim 1 or 2 described power transformer neutral point gap protection devices; it is characterized in that also being provided with sleeve (7), check bolt (8); the discharging gap lower fulcrum bar is processed with external screw thread; can screw in the female sleeve of processing that is cemented in current transformer by bolt, with check bolt with fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202746381U CN201733072U (en) | 2010-07-29 | 2010-07-29 | Power transformer neutral point gap protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202746381U CN201733072U (en) | 2010-07-29 | 2010-07-29 | Power transformer neutral point gap protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201733072U true CN201733072U (en) | 2011-02-02 |
Family
ID=43524228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202746381U Expired - Fee Related CN201733072U (en) | 2010-07-29 | 2010-07-29 | Power transformer neutral point gap protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201733072U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414158A (en) * | 2013-08-22 | 2013-11-27 | 深圳供电局有限公司 | Novel rod-plate-rod protection gap device for protecting transformer neutral point |
| CN103532124A (en) * | 2013-07-02 | 2014-01-22 | 辽宁电力勘测设计院 | Main transformer neutral point CT arrangement system |
| CN112310813A (en) * | 2020-11-19 | 2021-02-02 | 西安热工研究院有限公司 | A kind of environment adaptive transformer neutral point protection discharge gap device |
-
2010
- 2010-07-29 CN CN2010202746381U patent/CN201733072U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532124A (en) * | 2013-07-02 | 2014-01-22 | 辽宁电力勘测设计院 | Main transformer neutral point CT arrangement system |
| CN103414158A (en) * | 2013-08-22 | 2013-11-27 | 深圳供电局有限公司 | Novel rod-plate-rod protection gap device for protecting transformer neutral point |
| CN103414158B (en) * | 2013-08-22 | 2016-09-21 | 深圳供电局有限公司 | Novel rod-plate-rod protection gap device for protecting transformer neutral point |
| CN112310813A (en) * | 2020-11-19 | 2021-02-02 | 西安热工研究院有限公司 | A kind of environment adaptive transformer neutral point protection discharge gap device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20130729 |