CN201226283Y - Apparatus for equalizing voltage of extra-high voltage DC post insulator - Google Patents
Apparatus for equalizing voltage of extra-high voltage DC post insulator Download PDFInfo
- Publication number
- CN201226283Y CN201226283Y CNU2008200464364U CN200820046436U CN201226283Y CN 201226283 Y CN201226283 Y CN 201226283Y CN U2008200464364 U CNU2008200464364 U CN U2008200464364U CN 200820046436 U CN200820046436 U CN 200820046436U CN 201226283 Y CN201226283 Y CN 201226283Y
- Authority
- CN
- China
- Prior art keywords
- post insulator
- grading ring
- support
- pressure
- equalizing device
- 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 - Lifetime
Links
- 239000012212 insulator Substances 0.000 title claims abstract description 59
- 239000002131 composite material Substances 0.000 claims description 6
- 229910052573 porcelain Inorganic materials 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 3
- 230000005684 electric field Effects 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 4
- 241001354243 Corona Species 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
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- Insulators (AREA)
Abstract
The utility model relates to an ultra-high voltage direct current supporting insulator equalizing device, which includes a supporting insulator (1) and an equalizing device arranged between the high-voltage side of the supporting insulator (1) and a bus (5); wherein, the equalizing device comprises a big equalizing ring (2), a small equalizing ring (3) and a steadier (4); the small equalizing ring (3) is fixed on the upper end of the steadier (4); the big equalizing ring (2) is fixed on the lower end of the steadier (4); one end of the supporting insulator (1) is connected with the steadier (4) and the bus (5); and the other end is connected with the ground or a metal support. The low field strength area formed by the small equalizing ring can effectively shield the field strength on the bus side flange of the supporting insulator and the lower interface thereof, the low field strength area formed by the big equalizing ring can effectively shield the field strength on the surface of the small equalizing ring, and the voltage can be graded at the same time. Consequently, the equalizing device can realize the uniformity of electric field distribution to the max, effectively inhibit the corona discharge and electric corrosion of the supporting insulator and protect the sealing structure of the end.
Description
Technical field:
The utility model is a kind of extra-high voltage direct-current post insulator pressure-equalizing device, belongs to the innovative technology of extra-high voltage direct-current post insulator pressure-equalizing device.
Background technology:
Along with the growth and the need for electricity of national economy constantly increases, the extra-high voltage direct-current transmission of overlength distance, vast capacity becomes the emphasis of China Power development.
In the extra-high voltage direct-current current conversion station, post insulator supports as the insulation against ground of the power equipment of bus, switch and other high pressure floating potential, be subjected to the influence of the power equipment and the earth distribution impedance of high voltage bus, switch and other floating potential, make post insulator high-pressure side electric field distortion more serious, particularly, bearing electric field strength than high several times of middle part full skirt near between near the full skirt the flange.In the junction of gold utensil and plug, because gold utensil end and silicone rubber jacket form weak interface, and it is very concentrated to locate electric field simultaneously, under filthy conditions such as misty rain, travel fatigue, is vulnerable to galvanic corrosion and decreases, and quickens the insulator deterioration, even causes the insulator fracture.Therefore, rationally, the configuration pressure-equalizing device of science, improve the Electric Field Distribution of post insulator end, suppress coronas and galvanic corrosion that these zones produce and decrease.Very important to the safe and reliable operation that improves the ultra-high-voltage post insulator.
The utility model content:
The purpose of this utility model is to consider the problems referred to above and a kind of Electric Field Distribution homogenizing that can realize post insulator to greatest extent is provided; suppressing the corona discharge and the galvanic corrosion of post insulator decreases; the hermetically-sealed construction of protection end, the extra-high voltage direct-current post insulator pressure-equalizing device of the safe operation reliability of raising post insulator.
The technical solution of the utility model is: include post insulator and be configured in pressure-equalizing device between post insulator high-pressure side and the bus, wherein pressure-equalizing device includes big grading ring, little grading ring, support, little grading ring is packed in the upper end of support, big grading ring is packed in the lower end of support, one end of post insulator is connected with support and bus, and the other end is connected with the earth or metallic support.
Above-mentioned support links to each other with the on high-tension side flange of post insulator, with the flange equipotential.
Above-mentioned little grading ring is installed in support corresponding on the position a little less than flange, and big grading ring is installed on the position of support a little less than little grading ring.
Above-mentioned post insulator is a upright structures.
Being shaped as of above-mentioned big grading ring and little grading ring is round tubular, and it is packed in to prop up and is configured to integral body.
Above-mentioned big grading ring and little grading ring adopt metal material to make.
Above-mentioned post insulator is porcelain post insulator or full composite post insulator, or porcelain core composite post insulator.
The utility model post insulator is owing to adopt the structure that disposes the pressure-equalizing device of being made up of big grading ring, little grading ring, support in the high-pressure side, the low field intensity district that little grading ring forms can effectively shield post insulator bus bar side flange and lower end field intensity at the interface thereof, the field intensity that the low field intensity district that big grading ring forms can effectively shield little grading ring surface plays all pressure effects simultaneously.Therefore, the utility model can be realized the Electric Field Distribution homogenizing to greatest extent, effectively suppresses the corona discharge and the galvanic corrosion of post insulator and decreases the hermetically-sealed construction of protection end.The utility model is that a kind of design is ingenious, function admirable, and convenient and practical extra-high voltage direct-current post insulator pressure-equalizing device can be widely used in the power equipment of DC converter station bus, switch and other high pressure floating potential.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing among Fig. 1.
Embodiment:
Embodiment:
Structural representation of the present utility model as shown in Figure 1, 2, include post insulator 1 and be configured in pressure-equalizing device between post insulator 1 high-pressure side and the bus 5, wherein pressure-equalizing device includes big grading ring 2, little grading ring 3, support 4, little grading ring 3 is packed in the upper end of support 4, big grading ring 2 is packed in the lower end of support 4, and an end of post insulator 1 is connected with support 4 and bus 5, and the other end is connected with the earth or metallic support.Above-mentioned post insulator is a upright structures.
In the present embodiment, above-mentioned support 4 links to each other with post insulator 1 on high-tension side flange, with the flange equipotential.Above-mentioned little grading ring 3 is installed in support 4 corresponding on the position a little less than flange, and big grading ring 2 is installed on the position of support 4 a little less than little grading ring 3.The low field intensity district that little grading ring forms can effectively shield post insulator bus bar side flange and lower end field intensity at the interface thereof, and the field intensity that the low field intensity district that big grading ring forms can effectively shield little grading ring surface plays all pressure effects simultaneously.
In the present embodiment, being shaped as of above-mentioned big grading ring 2 and little grading ring 3 is round tubular, and it is packed in support 4 and constitutes whole.Above-mentioned big grading ring 2 and little grading ring 3 adopt metal material to make.Above-mentioned post insulator 1 is porcelain post insulator or full composite post insulator, or porcelain core composite post insulator.
Claims (7)
1, a kind of extra-high voltage direct-current post insulator pressure-equalizing device, include post insulator (1) and be configured in post insulator (1) high-pressure side and bus (5) between pressure-equalizing device, it is characterized in that pressure-equalizing device includes big grading ring (2), little grading ring (3), support (4), little grading ring (3) is packed in the upper end of support (4), big grading ring (2) is packed in the lower end of support (4), one end of post insulator (1) is connected with support (4) and bus (5), and the other end is connected with the earth or metallic support.
2, extra-high voltage direct-current post insulator pressure-equalizing device according to claim 1 is characterized in that above-mentioned support (4) links to each other with the on high-tension side flange of post insulator (1), with the flange equipotential.
3, extra-high voltage direct-current post insulator pressure-equalizing device according to claim 2, it is characterized in that above-mentioned little grading ring (3) is installed in support (4) corresponding on the position a little less than flange, big grading ring (2) is installed on the position of support (4) a little less than little grading ring (3).
4, according to each described extra-high voltage direct-current post insulator pressure-equalizing device of claim 1 to 3, it is characterized in that above-mentioned post insulator is a upright structures.
5, extra-high voltage direct-current post insulator pressure-equalizing device according to claim 4 is characterized in that being shaped as of above-mentioned big grading ring (2) and little grading ring (3) is round tubular, and it is packed in support (4) and constitutes whole.
6, extra-high voltage direct-current post insulator pressure-equalizing device according to claim 5 is characterized in that above-mentioned big grading ring (2) and little grading ring (3) adopt metal material to make.
7, extra-high voltage direct-current post insulator pressure-equalizing device according to claim 6 is characterized in that above-mentioned post insulator (1) is porcelain post insulator or full composite post insulator, or porcelain core composite post insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200464364U CN201226283Y (en) | 2008-04-15 | 2008-04-15 | Apparatus for equalizing voltage of extra-high voltage DC post insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200464364U CN201226283Y (en) | 2008-04-15 | 2008-04-15 | Apparatus for equalizing voltage of extra-high voltage DC post insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201226283Y true CN201226283Y (en) | 2009-04-22 |
Family
ID=40599180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200464364U Expired - Lifetime CN201226283Y (en) | 2008-04-15 | 2008-04-15 | Apparatus for equalizing voltage of extra-high voltage DC post insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201226283Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167615A (en) * | 2014-06-26 | 2014-11-26 | 国家电网公司 | Fitting for connecting tubular buses |
| CN106057380A (en) * | 2016-07-14 | 2016-10-26 | 江苏神马电力股份有限公司 | Bus supporting device |
| CN106981359A (en) * | 2017-05-10 | 2017-07-25 | 国家电网公司 | One kind ± 1100kV line filter reactor pressure-equalizing devices |
-
2008
- 2008-04-15 CN CNU2008200464364U patent/CN201226283Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167615A (en) * | 2014-06-26 | 2014-11-26 | 国家电网公司 | Fitting for connecting tubular buses |
| CN104167615B (en) * | 2014-06-26 | 2019-01-01 | 国家电网公司 | Pipe bus connection gold utensil |
| CN106057380A (en) * | 2016-07-14 | 2016-10-26 | 江苏神马电力股份有限公司 | Bus supporting device |
| CN106057380B (en) * | 2016-07-14 | 2018-02-16 | 江苏神马电力股份有限公司 | A kind of busbar supporting device |
| CN106981359A (en) * | 2017-05-10 | 2017-07-25 | 国家电网公司 | One kind ± 1100kV line filter reactor pressure-equalizing devices |
| CN106981359B (en) * | 2017-05-10 | 2019-09-13 | 国家电网公司 | A voltage equalizing device for ±1100kV line filter reactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CSG ELECTRIC POWER RESEARCH INSTITUTE CO., LTD. Free format text: FORMER OWNER: SOUTHERN POWER GRID TECHNOLOGY RESEARCH CENTER Effective date: 20111025 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 510623 GUANGZHOU, GUANGDONG PROVINCE TO: 510050 GUANGZHOU, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20111025 Address after: 510050, Guangdong, Guangzhou, Yuexiu District Dongfeng East Road, Qi Gang, No. 6, No. 8, West Tower, 13-20 floor Patentee after: China South Power Grid International Co.,Ltd. Address before: 510623 Guangdong city of Guangzhou province Tianhe District Pearl River Metro Chinese Sui Road No. 6 Patentee before: Southern Power Grid Technology Research Center |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090422 |