CN202094573U - Anti-corona ball for power transmission lines of high-altitude regions - Google Patents
Anti-corona ball for power transmission lines of high-altitude regions Download PDFInfo
- Publication number
- CN202094573U CN202094573U CN2011201710029U CN201120171002U CN202094573U CN 202094573 U CN202094573 U CN 202094573U CN 2011201710029 U CN2011201710029 U CN 2011201710029U CN 201120171002 U CN201120171002 U CN 201120171002U CN 202094573 U CN202094573 U CN 202094573U
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- Prior art keywords
- corona
- ball
- spherical shell
- transmission line
- power transmission
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 26
- 208000002173 dizziness Diseases 0.000 claims description 37
- 239000000725 suspension Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 10
- 239000012212 insulator Substances 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 11
- 239000010931 gold Substances 0.000 description 11
- 229910052737 gold Inorganic materials 0.000 description 11
- 238000013461 design Methods 0.000 description 6
- 230000005684 electric field Effects 0.000 description 6
- 239000004020 conductor Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000272165 Charadriidae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model provides an anti-corona ball for power transmission lines of high-altitude regions, which belongs to the field of overhead installation of wires or cables. The anti-corona ball is suitable for being installed on a connection board of suspension insulator strings of 330kv power transmission lines of high-altitude regions. The anti-corona ball covers the end of the connection board, a bolt on the top of a suspension clamp connected to connection board and a pin, produces a bulk shielding effect on a combined part of the connection board and the clamp, indirectly increases radius of curvature of a connecting part of the connection board and the suspension clamp, enables the connecting part to have a regular round surface in shape, effectively improves field intensity distribution of the surface, lowers maximum field intensity of the surface, accordingly restrains tip corona discharge and reduces corona noise and corona loss of power transmission lines. The anti-corona ball comprises five parts of a spherical shell, a hanging board, an installation hole, a hanging hole and a baffle board, has small volume and light weight, and is convenient to install.
Description
Technical field
The utility model belongs to the built on stilts installing area of electric wire or cable, specifically relates to a kind of anti-dizziness ball that is used for the high altitude localities transmission line.
Background technology
Western China is located in the plateau, at the planning of west area geographical features and energy development thereof, the demand of electric power is increased day by day.Yet along with the increase of height above sea level, high height above sea level corona problem is very outstanding, and the corona effects such as corona loss that cause of corona discharge, can influence the safety and economic operation of transmission line.Therefore, the problem of the anticorona discharge of high altitude localities transmission line and corona noise is very necessary.
The generation of corona is because rough conductor produces uneven electric field, near the electrode that radius of curvature is little around uneven electric field, when voltage is elevated to certain value, electrode surface electric field strength surpasses the breakdown strength of air molecule will discharge, and forms corona.Corona is wanted consumed energy, and the pulse electromagnetic wave that corona discharge produces can produce interference to radio and HF communication; Conductive surface is corroded, thereby reduce the useful life of conductor.At present, the electromagnetic environment problem has become high altitude localities transmission line design, construction and the key factor that must consider in service.
Corona noise is by conductor partial discharge or corona and produce, the height and the transmission line height above sea level of living in of it and electric pressure are closely related, electric pressure height, electrical wiring complexity, then the local field strength on energized conductor surface is high more, the easy more generation of partial discharge or corona; The gold utensil in the high more area of height above sea level, the easy more corona discharge that occurs in its surface.
The design of charged gold utensil is relevant with its surface work field intensity with applicable elements, and the work field intensity is higher than the bloom field intensity when the surface, will produce corona discharge on the gold utensil surface.The size and the gold utensil structure of gold utensil work field intensity are closely related, studies show that the position that gold utensil surface curvature radius is more little, under identical voltage effect, its surface work field intensity is high more, the easy more corona discharge that occurs in this place, thereby produce corona noise and electric energy loss, be unfavorable for energy-conserving and environment-protective.
Transmission line is under nominal operating conditions, and the periphery of lead and gold utensil can produce bigger electric field strength.Find that after tested when height above sea level surpassed 1500 meters, the dangle combination form of yoke plate and suspension clamp of the conventional triangular form of 330kV transmission line was unfavorable for anti-corona.Reason is a yoke plate with wire clamp is to be connected and fastening by external bolt, pin, and the surface curvature radius of bolt and pin is all less, and under the effect of power frequency electric field, this joint portion tends to occur obvious most advanced and sophisticated corona discharge and corona noise.
Present method for high altitude localities control corona is mainly by special construction design and realizes, for example Granted publication number is CN2245288Y, denomination of invention is the utility model patent of " transmission line suspension clamp ", its technical scheme is: body rim portion and bight are slick and sly streamlined, the radius of curvature of the lower lips at its main body two ends is the 8-20 millimeter, and the U-shaped connector is inclusive in the main body; The technical problem that solves is: the gold utensil of this particular design is specially adapted to the 500kV extra high voltage network of heavy duty, big retaining distance, high height above sea level, serious ice-covering area.
Above-mentioned technology mainly is the improvement of gold utensil structure, and its improvement effect is limited.
The utility model content
For overcoming the defective of prior art, the purpose of this utility model is to provide a kind of anti-dizziness ball that is used for 330kV transmission line suspension insulator triangular form yoke plate end, high altitude localities, by this anti-dizziness ball is installed, the yoke plate end is reached the suspension clamp top bolt that links to each other with yoke plate, pin covers, joint portion to yoke plate and wire clamp forms the bulk shielding effect, make it have the regular circular surface in shape, effectively having improved the gold utensil surface electric field intensity distributes, reduced surperficial maximum field strength, thereby suppressed most advanced and sophisticated corona discharge, reduced transmission line corona noise and corona loss.
For achieving the above object, the utility model is by the following technical solutions:
A kind of anti-dizziness ball that is used for the high altitude localities transmission line, described anti-dizziness ball comprises spherical shell, link plate and baffle plate, its improvements are that the top of described spherical shell is hemisphere, the bottom is a cylinder, described spherical shell is provided with installing hole, inside and described link plate that described link plate is fixed in described spherical shell are provided with hanging hole, and described baffle plate is installed on the cylindrical end of described spherical shell.
Another optimal technical scheme of the present utility model is: a side of described spherical shell is provided with installing hole.
Another optimal technical scheme of the present utility model is: the spherical shell of described anti-dizziness ball has gap.
Another optimal technical scheme of the present utility model is: the quantity of described link plate is two and parallel placement, and the distance between the two parallel link plates is not less than the width of described gap along the hemisphere weft direction.
Another optimal technical scheme of the present utility model is: the diameter of described installing hole is greater than the diameter of described hanging hole.
Another optimal technical scheme of the present utility model is: described baffle plate is installed on the described hemispheroidal end that has described gap, and the width of described baffle plate is not less than the width of described gap along the hemisphere weft direction.
Owing to adopted technique scheme, compared with prior art, the beneficial effects of the utility model comprise:
1, effectively suppresses the corona discharge phenomenon, play the effect of energy-saving and noise-reducing
The top hemisphere of hemisphere spherical shell and Lower Half cylinder outer surface radius all are not less than 50mm, inside dimension is relevant with the triangular form yoke plate size of the insulator string that matches, the design of anti-dizziness ball makes yoke plate end and the suspension clamp top bolt, the pin that link to each other with yoke plate cover, joint portion to yoke plate and wire clamp forms the bulk shielding effect, the increase wire clamp surface curvature radius that anti-dizziness ball is indirect, its surface field is evenly distributed, can effectively suppresses the corona discharge of 330kV transmission line suspension insulator triangular form yoke plate end, high altitude localities; Prevented and treated because noise and the electric energy loss that corona produces;
2, simple in structure, volume is little, in light weight, easy for installation
Anti-dizziness ball described in the utility model is made up of spherical shell, link plate and baffle plate, and is simple in structure, and anti-dizziness ball is cast with aluminum alloy materials and formed, and material is light; And the anti-dizziness ball course of processing is optimized, and production cost is low.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is the spherical schematic diagram in the whole top of anti-dizziness ball;
Fig. 2 is that anti-dizziness ball is installed in the profile on the suspension insulator triangular form yoke plate;
Fig. 3 is the end view after anti-dizziness ball and yoke plate, wire clamp are installed;
Reference numeral:
The 1-spherical shell, the 2-link plate, the 3-installing hole, the 4-hanging hole, the 5-baffle plate, the 6-yoke plate, 7-wire clamp link plate, 8-adds stay bolt, the 9-gap.
Embodiment
The utility model is by the three-dimensional finite element method, set up the suspension insulator Simulation Calculation, analyze its gold utensil surface field and distribute, take suitable optimized Measures, design a kind of anti-dizziness ball that is used with the triangular form yoke plate, thereby reduce the corona noise and the corona loss of transmission line.Through laboratory corona test and hanging net operation checking on the pilot circuit, this anti-dizziness ball has good anti-corona performance, can effectively reduce line corona noise and corona loss; Be applicable to high altitude localities 330kV transmission line, the electromagnetic environment of improving the high altitude localities transmission line is played significant effect.
Below in conjunction with specific embodiment, anti-dizziness ball described in the utility model is further detailed:
Embodiment 1:
This anti-dizziness ball overall appearance is the combination of top hemisphere lower cylindrical shape, inner hollow, form by the aluminum alloy materials casting, mainly comprise: spherical shell 1, link plate 2 and baffle plate 5, wherein spherical shell 1 top is hemisphere, and the bottom is cylindrical, and a side of spherical shell 1 is provided with installing hole 3, link plate 2 is provided with hanging hole 4, is the spherical schematic diagram of the anti-dizziness ball first half as shown in Figure 1.
Accompanying drawing 2 is for anti-dizziness ball is installed in profile on the suspension insulator triangular form yoke plate, and the element that wherein relates to insulator hardware string part has yoke plate 6, wire clamp link plate 7 and adds stay bolt 8.
The cylindrical outer surface radius of the top hemisphere of spherical shell 1 and Lower Half all is not less than 50mm, and outer wall thickness 5mm, the height of lower cylindrical shape will guarantee to install its lower plane of back a little less than the yoke plate lower plane.The radius of curvature of its function yoke plate that has been indirect increase and wire clamp connecting portion reduces surperficial maximum field strength, thereby suppresses the generation of corona.
Installing hole 3 is positioned at the side of anti-dizziness ball, and the aperture needs greater than the outer end diameter that adds stay bolt 8.Adding stay bolt 8 will be inserted into anti-dizziness ball inside by installing hole 3 and install and fix.
Hanging hole 4 is positioned at the central authorities of link plate 2, and its aperture is greater than the screw rod external diameter that adds stay bolt 8.Link plate 2 is that anti-dizziness ball is mounted and fixed on the yoke plate with the acting in conjunction of hanging hole 4.
Accompanying drawing 3 is the end view after anti-dizziness ball and yoke plate, wire clamp are installed.
The utility model is described according to specific exemplary embodiment herein.To carry out suitable replacement under the scope of the present utility model or revise will be conspicuous not breaking away to one skilled in the art.Exemplary embodiment only is illustrative, rather than to the restriction of scope of the present utility model, scope of the present utility model is by appended claim definition.
Claims (6)
1. anti-dizziness ball that is used for the high altitude localities transmission line, described anti-dizziness ball comprises spherical shell (1), link plate (2) and baffle plate (5), it is characterized in that, the top of described spherical shell (1) is hemisphere, the bottom is a cylinder, described spherical shell (1) is provided with installing hole (3), and inside and described link plate (2) that described link plate (2) is fixed in described spherical shell (1) are provided with hanging hole (4), and described baffle plate (5) is installed on the cylindrical end of described spherical shell (1).
2. a kind of anti-dizziness ball that is used for the high altitude localities transmission line as claimed in claim 1 is characterized in that, described spherical shell (1) one side is provided with installing hole (3).
3. a kind of anti-dizziness ball that is used for the high altitude localities transmission line as claimed in claim 1 is characterized in that the spherical shell of described anti-dizziness ball (1) has gap (9).
4. as claim 1 or 3 described a kind of anti-dizziness balls that are used for the high altitude localities transmission line, it is characterized in that, the quantity of described link plate (2) is two and parallel placement, and the distance between the two parallel link plates (2) is not less than the width of described gap (9) along the hemisphere weft direction.
5. a kind of anti-dizziness ball that is used for the high altitude localities transmission line as claimed in claim 1 is characterized in that the diameter of described installing hole (3) is greater than the diameter of described hanging hole (4).
6. as claim 1 or 3 described a kind of anti-dizziness balls that are used for the high altitude localities transmission line, it is characterized in that, described baffle plate (5) is installed on the described hemispheroidal end that has described gap (9), and the width of described baffle plate (5) is not less than the width of described gap (9) along the hemisphere weft direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201710029U CN202094573U (en) | 2011-05-25 | 2011-05-25 | Anti-corona ball for power transmission lines of high-altitude regions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201710029U CN202094573U (en) | 2011-05-25 | 2011-05-25 | Anti-corona ball for power transmission lines of high-altitude regions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202094573U true CN202094573U (en) | 2011-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201710029U Expired - Lifetime CN202094573U (en) | 2011-05-25 | 2011-05-25 | Anti-corona ball for power transmission lines of high-altitude regions |
Country Status (1)
| Country | Link |
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| CN (1) | CN202094573U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236596A (en) * | 2013-04-07 | 2013-08-07 | 国家电网公司 | Self-shielding grounding line set device for extra-high voltage tests |
| CN107611898A (en) * | 2017-11-13 | 2018-01-19 | 国网河南省电力公司经济技术研究院 | A kind of spherical equal pressure cap |
| CN108736423A (en) * | 2018-05-27 | 2018-11-02 | 徐峰 | Corona-proofing device applied to transmission of electricity wire clamp |
-
2011
- 2011-05-25 CN CN2011201710029U patent/CN202094573U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236596A (en) * | 2013-04-07 | 2013-08-07 | 国家电网公司 | Self-shielding grounding line set device for extra-high voltage tests |
| CN107611898A (en) * | 2017-11-13 | 2018-01-19 | 国网河南省电力公司经济技术研究院 | A kind of spherical equal pressure cap |
| CN107611898B (en) * | 2017-11-13 | 2024-01-26 | 国网河南省电力公司经济技术研究院 | Spherical pressure equalizing cap |
| CN108736423A (en) * | 2018-05-27 | 2018-11-02 | 徐峰 | Corona-proofing device applied to transmission of electricity wire clamp |
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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: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140321 Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140321 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100192 HAIDIAN, BEIJING TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140321 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: China Electric Power Research Institute Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee before: China Electric Power Research Institute |
|
| CX01 | Expiry of patent term |
Granted publication date: 20111228 |
|
| CX01 | Expiry of patent term |