CN203812668U - Arrester with multiple parallel columns - Google Patents
Arrester with multiple parallel columns Download PDFInfo
- Publication number
- CN203812668U CN203812668U CN201420048973.8U CN201420048973U CN203812668U CN 203812668 U CN203812668 U CN 203812668U CN 201420048973 U CN201420048973 U CN 201420048973U CN 203812668 U CN203812668 U CN 203812668U
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- resistor disc
- post
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- parallel
- sheet
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Abstract
The utility model relates to an arrester with multiple parallel columns. The arrester comprises a plurality of resistance card columns and two short-circuit cards, wherein each resistance card column is formed by connecting a plurality of resistance cards in series; one short-circuit card is arranged at the top ends of the plurality of resistance card columns and is connected with all the resistance card columns; the other short-circuit card is arranged at the bottoms of the plurality of resistance card columns and is connected with all the resistance card columns; the resistance card columns are connected in parallel by the two short-circuit cards. The arrester provided by the utility model can save the material by eliminating the short-circuit cards, can reduce assembly difficulty, can connect resistance cards in series as many as possible according to the test device capacity in a bypass experiment, and can improve the safety as the testing result is stricter than engineering requirement.
Description
Technical field
The utility model relates to a kind of equipment of extra-high voltage DC transmission system overvoltage protection, particularly a kind of Hollow Compound jacket-type multicolumn lightning arrester connected in parallel for ± 800kV direct current electric transmission and transformation system equipment overvoltage protection.
Background technology
Along with the fast development of China's economy, electricity needs rapid development, and China's hydraulic power resource mainly concentrates on Midwest, need to regulate by engineerings such as remote, jumbo " transferring electricity from the west to the east ", " confession are protected in north and south ", therefore need to develop UHV Transmission Engineering.UHV Transmission Engineering comprises high voltage direct current and two kinds of forms of extra-high voltage direct-current transmission.In the middle of ± 800kV extra-high voltage direct-current transmission without drop point can the large load center of a large amount of electric power direct sendings, transmission capacity is large, power transmission distance, save the advantages such as transmission of electricity stringing corridor.
In prior art, lightning arrester has 3 columnar resistance sheet post parallel connections conventionally, and every post is connected by 6 sheet resistor sheets.There is a short circuit sheet that 3 columnar resistance sheet posts are carried out to electric parallel connection in the upper end of first resistor disc, there is a short circuit sheet that 3 columnar resistance sheet posts are carried out to electric parallel connection in the lower end of the second sheet resistor sheet, there is a short circuit sheet that 3 columnar resistance sheet posts are carried out to electric parallel connection in the lower end of the 4th sheet resistor sheet, have a short circuit sheet that 3 columnar resistance sheet posts are carried out to electric parallel connection in the lower end of the 6th sheet resistor sheet.This kind of way increased assembling difficulty, material cost and tested man-hour.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of reliability, multicolumn resistor disc post that can increase parallel resistance sheet post bifurcated characteristic and shunts the multicolumn lightning arrester connected in parallel of the fail safe that improves direct current arrester.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of multicolumn lightning arrester connected in parallel, comprise multiple resistor disc posts and two short circuit sheets, each resistor disc post is in series by multi-disc resistor disc, one of them short circuit sheet is arranged at the top of multiple resistor disc posts and connects all resistor disc posts simultaneously, another short circuit sheet is arranged at multiple resistor disc post water levels bottom and connects all resistor disc posts simultaneously, and multiple resistor disc posts are carried out electric parallel connection by two described short circuit sheets.
On the basis of technique scheme, the utility model can also do following improvement.
Further, the quantity of described resistor disc post is 2 to 5.
Further, the quantity of described resistor disc post is three.
Further, in each resistor disc post, the quantity of resistor disc is 6 to 60.
Further, each resistor disc post comprises six sheet resistor sheets.
Further, described resistor disc is non-linear metal oxide resistance.
The beneficial effects of the utility model are: the utlity model has saving material cost, reduce assembling difficulty; When flow tests, can test according to series resistance sheet number as much as possible according to testing equipment ability, and result of the test to be strict in actual requirement of engineering, improve fail safe.
Brief description of the drawings
Fig. 1 is the utility model structure chart;
Fig. 2 is the utility model structural representation while carrying out flow tests.
In accompanying drawing, the list of parts of each label representative is as follows:
1, resistor disc post, 2, resistor disc, 3, short circuit sheet.
Embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, be the utility model structure chart; Fig. 2 is the utility model structural representation while carrying out flow tests.
Embodiment 1
A kind of multicolumn lightning arrester connected in parallel, comprise multiple resistor disc posts 1 and two short circuit sheets 3, each resistor disc post is in series by multi-disc resistor disc 2, one of them short circuit sheet 3 is arranged at the top of multiple resistor disc posts 1 and connects all resistor disc posts 1 simultaneously, another short circuit sheet 3 is arranged at multiple resistor disc posts 1 water level bottom and connects 1, two described short circuit sheet 3 of all resistor disc posts simultaneously multiple resistor disc posts 1 are carried out to electric parallel connection.
The quantity of described resistor disc post 1 is 2 to 5.The quantity of described resistor disc post 1 is three.
In each resistor disc post 1, the quantity of resistor disc 2 is 6 to 60.Each resistor disc post 1 comprises six sheet resistor sheets 2.Described resistor disc 2 is non-linear metal oxide resistance.
When parallel resistance sheet post quantity less, series resistance sheet quantity is when more, the better realization of control of bifurcated characteristic; Contrary, when parallel resistance sheet post quantity is more, series resistance sheet number is when fewer, bifurcated characteristic control is more difficult.
For fixing series parallel structure, actual assembled is carried out according to Fig. 1, and due to the capacity of testing equipment, flow tests is carried out according to Fig. 2, and final flow tests result will be strict in Practical Project user demand, thereby has also increased fail safe.
Flow tests process is as follows:
Divide and carry out flow tests three times.Flow tests for the first time: sequence number 1, the 2 resistor disc series connection of every post, then the first post to the three post parallel connections, apply an impulse current to parallel resistance sheet post, measure by the size of current of every columnar resistance sheet post, and calculate the current imbalance coefficient between three posts.
Flow tests for the second time: sequence number 3, the 4 resistor disc series connection of every post, then the first post to the three post parallel connections, apply an impulse current to parallel resistance sheet post, measure by the size of current of every columnar resistance sheet post, and calculate the current imbalance coefficient between three posts.
Flow tests for the third time: sequence number 5, the 6 resistor disc series connection of every post, then the first post to the three post parallel connections, apply an impulse current to parallel resistance sheet post, measure by the size of current of every columnar resistance sheet post, and calculate the current imbalance coefficient between three posts.
Finally get three maximums in flow tests result as the maximum nonuniformity coefficient between three columnar resistance sheet posts.
Centre is in order to realize the flow-dividing control between resistor disc post without short circuit sheet, middle during without short circuit sheet, flow tests can be tested whole valve block in parallel, while having short circuit sheet in the middle of having overcome, binding character must carry out each section in series connection when flow tests time, is more conducive to implement because of condition.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (6)
1. a multicolumn lightning arrester connected in parallel, it is characterized in that: comprise multiple resistor disc posts (1) and two short circuit sheets (3), each resistor disc post is in series by multi-disc resistor disc (2), one of them short circuit sheet (3) is arranged at the top of multiple resistor disc posts (1) and connects all resistor disc posts (1) simultaneously, another short circuit sheet (3) is arranged at multiple resistor disc posts (1) water level bottom and connects all resistor disc posts (1) simultaneously, and multiple resistor disc posts (1) are carried out electric parallel connection by two described short circuit sheets (3).
2. multicolumn lightning arrester connected in parallel according to claim 1, is characterized in that: the quantity of described resistor disc post (1) is 2 to 5.
3. multicolumn lightning arrester connected in parallel according to claim 2, is characterized in that: the quantity of described resistor disc post (1) is three.
4. multicolumn lightning arrester connected in parallel according to claim 1, is characterized in that: in each resistor disc post (1), the quantity of resistor disc (2) is 6 to 60.
5. multicolumn lightning arrester connected in parallel according to claim 4, is characterized in that: each resistor disc post (1) comprises six sheet resistor sheets (2).
6. according to the arbitrary described multicolumn lightning arrester connected in parallel of claims 1 to 3, it is characterized in that: described resistor disc (2) is non-linear metal oxide resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048973.8U CN203812668U (en) | 2014-01-24 | 2014-01-24 | Arrester with multiple parallel columns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048973.8U CN203812668U (en) | 2014-01-24 | 2014-01-24 | Arrester with multiple parallel columns |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203812668U true CN203812668U (en) | 2014-09-03 |
Family
ID=51451389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420048973.8U Expired - Fee Related CN203812668U (en) | 2014-01-24 | 2014-01-24 | Arrester with multiple parallel columns |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203812668U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425018A (en) * | 2015-12-31 | 2016-03-23 | 中国西电电气股份有限公司 | Method for testing resistor disc column parallel current distribution |
| CN105680429A (en) * | 2016-01-25 | 2016-06-15 | 武汉大学 | Current sharing device of lightning arrester with two parallel column valves |
| CN108053961A (en) * | 2017-12-20 | 2018-05-18 | 南方电网科学研究院有限责任公司 | Lightning arrester |
-
2014
- 2014-01-24 CN CN201420048973.8U patent/CN203812668U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425018A (en) * | 2015-12-31 | 2016-03-23 | 中国西电电气股份有限公司 | Method for testing resistor disc column parallel current distribution |
| CN105680429A (en) * | 2016-01-25 | 2016-06-15 | 武汉大学 | Current sharing device of lightning arrester with two parallel column valves |
| CN105680429B (en) * | 2016-01-25 | 2018-05-15 | 武汉大学 | A kind of parallel arrester electric current current equalizer of two column valve pieces |
| CN108053961A (en) * | 2017-12-20 | 2018-05-18 | 南方电网科学研究院有限责任公司 | Lightning arrester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20180124 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |