CN102306919B - Anti-corona sphere for power transmission line in high altitude region - Google Patents
Anti-corona sphere for power transmission line in high altitude region Download PDFInfo
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- CN102306919B CN102306919B CN201110137653.0A CN201110137653A CN102306919B CN 102306919 B CN102306919 B CN 102306919B CN 201110137653 A CN201110137653 A CN 201110137653A CN 102306919 B CN102306919 B CN 102306919B
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- corona
- sphere
- transmission line
- yoke plate
- spherical shell
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 21
- 239000000956 alloy Substances 0.000 claims abstract description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 8
- 208000002173 dizziness Diseases 0.000 claims description 39
- 238000005266 casting Methods 0.000 claims description 8
- 239000000725 suspension Substances 0.000 abstract description 13
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 9
- 229910052737 gold Inorganic materials 0.000 description 9
- 239000010931 gold Substances 0.000 description 9
- 230000005684 electric field Effects 0.000 description 8
- 239000012212 insulator Substances 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010120 permanent mold casting Methods 0.000 description 3
- 238000007528 sand casting Methods 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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- 229910052725 zinc Inorganic materials 0.000 description 1
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- Non-Insulated Conductors (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention provides an anti-corona sphere for a power transmission line in a high altitude region, and belongs to the field of overhead mounting of electric wires or cables. The anti-corona sphere provided by the invention is suitable to be arranged on a suspension string yoke plate of the 330kV power transmission line in the high altitude region. By the anti-corona sphere, the end parts of the yoke plate, and bolts and pints at the top of a suspension clamp connected with the yoke plate are covered, an overall shielding function in the combination part of the yoke plate and the clamp is realized, the radius of curvature of a connecting part between the yoke plate and the suspension clamp is indirectly increased, the suspension clamp is endowed with a regular circular surface in shape, the field intensity distribution of the surface is effectively improved and the maximum field intensity of the surface is reduced, thereby suppressing the corona discharging of a tip and reducing the corona noises and corona loss of the power transmission line. The anti-corona sphere comprises a sphere shell, hanging plates, a mounting hole, hanging holes and a baffle plate. The anti-corona sphere provided by the invention is cast and molded from an aluminum alloy material, has a small volume, light weight and low manufacture cost, and is convenient to arrange.
Description
Technical field
The invention belongs to the field of overhead installation of electric wire or cable, specifically relate to a kind of anti-dizziness ball for power transmission line in high altitude region.
Background technology
Western China is located in plateau, for west area geographical features and energy development planning thereof, day by day increases the demand of electric power.But along with the increase of height above sea level, High aititude corona problem is very outstanding, and the corona effect such as corona loss of causing of corona discharge, the safety and economic operation of transmission line can be affected.Therefore, the anticorona electric discharge of power transmission line in high altitude region and the problem of corona noise very necessary.
The generation of corona is because rough conductor produces uneven electric field, the ate electrode that radius of curvature is little around uneven electric field, when voltage is elevated to certain value, the breakdown strength that electrode surface electric field strength exceedes air molecule will be discharged, and forms corona.Corona wants consumed energy, and the pulse electromagnetic wave that corona discharge produces can produce interference to radio and HF communication; Conductive surface also can be made to corrode, thus reduce the useful life of conductor.At present, electromagnetic environment problem has become the key factor must considered in power transmission line in high altitude region design, construction and operation.
Corona noise is produced by conductor partial discharge or corona, residing for the height of it and electric pressure and transmission line, height above sea level is closely related, and electric pressure is high, and electrical wiring is complicated, then the local field strength on energized conductor surface is higher, and partial discharge or corona more easily occur; The gold utensil in the higher area of height above sea level, more easily there is corona discharge in its surface.
The design of charged gold utensil is relevant with its surperficial field intensity that works with applicable elements, when surface work field intensity is higher than bloom field intensity, will produce corona discharge on gold utensil surface.Size and the hardware fitting structure of gold utensil work field intensity are closely related, and research shows, the position that gold utensil surface curvature radius is less, under identical voltage effect, its surface work field intensity is higher, and this place more easily occurs corona discharge, thus 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 wire and gold utensil can produce larger electric field strength.Find after tested, when height above sea level is more than 1500 meters, the conventional triangular form hanging yoke plate of 330kV transmission line and the combination form of suspension clamp are unfavorable for anti-corona.To be yoke plate with wire clamp be reason by external bolt, pin is undertaken being connected and fastening, and the surface curvature radius of bolt and pin is all less, and under the effect of power frequency electric field, obvious Point Corona Discharge and corona noise often appear in this joint portion.
The current method for high altitude localities control corona is mainly and is realized by special construction design, such as Authorization Notice No. is CN2245288Y, denomination of invention is the utility model patent of " transmission line suspension clamp ", its technical scheme is: body edge edge and bight are round and smooth streamlined, the radius of curvature of the lower lips at its main body two ends is 8-20 millimeter, and U-shaped connector is inclusive in main body; The technical problem solved is: the gold utensil of this particular design is specially adapted to heavy duty, keeps off greatly the 500kV extra high voltage network of distance, High aititude, serious ice-covering area.
The improvement of above-mentioned technology mainly hardware fitting structure, its improvement effect is limited.
Summary of the invention
The object of the invention is to provide a kind of anti-dizziness ball for 330kV transmission line suspension insulator triangular form yoke plate end, high altitude localities, by installing this anti-dizziness ball, yoke plate end and the suspension clamp top bolt be connected with yoke plate, pin are covered, bulk shielding effect is formed to the joint portion of yoke plate and wire clamp, make its well-regulated circular surface of tool in shape, effectively improve the distribution of gold utensil surface electric field intensity, reduce surperficial maximum field strength, thus inhibit Point Corona Discharge, reduce transmission line corona noise and corona loss.
For achieving the above object, the present invention is by the following technical solutions:
A kind of anti-dizziness ball for power transmission line in high altitude region, described anti-dizziness ball comprises spherical shell, link plate and plate washer, its improvements are that described spherical shell is provided with installing hole, described link plate is fixed on the inside of described spherical shell and described link plate is provided with hanging hole, and described baffle plate is installed on the bottom of described spherical shell; Described anti-dizziness ball is by aluminum alloy materials casting.
Another optimal technical scheme of the present invention is: the spherical shell of described anti-dizziness ball has gap.
Another optimal technical scheme of the present invention is: the end of the spherical shell of described anti-dizziness ball has gap.
An optimal technical scheme more of the present invention is: the quantity of described link plate is two and parallel placement, and the distance between two parallel link plates is greater than the width of described gap along spherical shell weft direction.
An optimal technical scheme more of the present invention is: the diameter of described installing hole is greater than the diameter of described hanging hole.
An optimal technical scheme more of the present invention is: described baffle plate is installed on the bottom having described gap of described spherical shell, and the width of described baffle plate is greater than the width of described gap along spherical shell weft direction.
An optimal technical scheme more of the present invention is: described baffle plate casting or be welded on described spherical shell and link plate.
An optimal technical scheme more of the present invention is: described anti-dizziness ball, by GB 1173-1995 Birmasil, adopts the aluminium alloy manufacture of disposable type.
Owing to have employed technique scheme, compared with prior art, beneficial effect of the present invention comprises:
1, effectively suppress corona discharge phenomenon, play the effect of energy-saving and noise-reducing
The radius of curvature of anti-dizziness ball spherical shell is not less than 50mm, inside dimension is relevant with the triangular form yoke plate size of the insulator string matched, the design of anti-dizziness ball makes yoke plate end and the suspension clamp top bolt, the pin that are connected with yoke plate cover, bulk shielding effect is formed to the joint portion of yoke plate and wire clamp, anti-dizziness ball indirectly increases wire clamp surface curvature radius, make its surface electric field distribution even, effectively can suppress the corona discharge of 330kV transmission line suspension insulator triangular form yoke plate end, high altitude localities; The noise because corona produces and electric energy loss are prevented and treated;
2, structure is simple, volume is little, lightweight, easy for installation
Anti-dizziness ball of the present invention is made up of spherical shell, link plate and baffle plate, and structure is simple, anti-dizziness ball aluminum alloy materials casting, and material is light; And the anti-dizziness ball course of processing is optimized, production cost is low.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is the overall upper spherical schematic diagram of anti-dizziness ball;
Fig. 2 is the profile that anti-dizziness ball is arranged on 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:
1-spherical shell, 2-link plate, 3-installing hole, 4-hanging hole, 5-baffle plate, 6-yoke plate, 7-wire clamp link plate, 8-Lengthened bolt, 9-gap.
Embodiment
The present invention passes through three-dimensional finite element method, set up suspension insulator Simulation Calculation, analyze its gold utensil surface electric field distribution, take suitable Optimized Measures, design a kind of with triangular form yoke plate with the use of anti-dizziness ball, thus reduce corona noise and the corona loss of transmission line.Through Laboratory Corona test and hanging net operation checking on 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, significant effect is played to the electromagnetic environment improving power transmission line in high altitude region.
Below in conjunction with specific embodiment, anti-dizziness ball of the present invention is further detailed:
Embodiment 1:
This anti-dizziness ball overall appearance is spherical, inner hollow, cast by aluminum alloy materials and form, mainly comprise: spherical shell 1, link plate 2 and plate washer 5, wherein spherical shell 1 top is hemisphere, and bottom is cylindrical, and the 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 arranged on the profile on suspension insulator triangular form yoke plate for anti-dizziness ball, and the element wherein relating to insulator hardware string part has yoke plate 6, wire clamp link plate 7 and Lengthened bolt 8.
The upper hemispherical body of spherical shell 1 and the cylindrical outer surface radius of Lower Half are all not less than 50mm, outer wall thickness 5mm, and the height of lower cylindrical shape will ensure to install its lower plane rear a little less than yoke plate lower plane.Its function is the radius of curvature indirectly increasing yoke plate and wire clamp connecting portion, reduces surperficial maximum field strength, thus suppresses the generation of corona.
Link plate 2 wall thickness 5mm, is divided into left and right two parts, and the hemisphere being set in parallel in anti-dizziness ball top is inner.Both sides link plate spacing is not less than the extended distance of wire clamp link plate 7.Both sides link plate and spherical shell 1 front intersection have the distance between the parallel link plate 2 of a gap 9, two to be not less than the width of gap 9 along hemisphere weft direction.Yoke plate 6 end will be inserted in anti-dizziness ball from gap 9 and be carried out installation and fix, and the width of gap 9 need be greater than the height of yoke plate and spherical shell exterior surface position after fixed installation.
Installing hole 3 is positioned at the side of anti-dizziness ball, and aperture need be greater than the outer end diameter of Lengthened bolt 8.Lengthened bolt 8 will by installing hole 3 be inserted into anti-dizziness ball inside carry out installation fix.
Hanging hole 4 is positioned at the central authorities of link plate 2, and its aperture is greater than the outer screw diameter of Lengthened bolt 8.Link plate 2 is be mounted and fixed on yoke plate by anti-dizziness ball with the acting in conjunction of hanging hole 4.
The thick 5mm of plate washer 5, its effect prevents anti-dizziness ball from rotating along horizontal path direction in yoke plate end, namely prevents anti-dizziness ball to be parallel to the rotation with in surface of link plate 2 on edge.
Accompanying drawing 3 is the end view after anti-dizziness ball and yoke plate, wire clamp are installed.
Embodiment 2:
Anti-dizziness ball of the present invention prepare material, ZL-102 aluminum alloy materials can be selected, about ZL-102 aluminum alloy materials, be described below:
Title material: ZAlSi12
Alloy designations: ZL102
Standard: GB/T 1173-1995
Characteristic and the scope of application:
Not heat-treatable strengthened, the casting character of this alloy is excellent, and without hot tearing and loose tendency, air-tightness is higher.Its density is little, and corrosion resistance is good, can be subject to air. and use in the environment of seawater corrosion, red fuming nitric acid (RFNA) in the environment of industrial atmosphere can be born. the corrosiveness of hydrogen peroxide etc.; Welding performance might as well.But the mechanical property of this alloy is low, thermal endurance and machinability poor.
Chemical analysis:
Silicon Si:10.0-13.0
Aluminium Al: surplus
Iron (sand casting): 0.000 ~ 0.700
Iron (permanent mold casting): 0.000 ~ 1.000
Copper Cu :≤0.30 (impurity)
Manganese Mn :≤0.5 (impurity)
Magnesium Mg:0≤0.10 (impurity)
Zinc Zn :≤0.1 (impurity)
Titanium Ti :≤0.20 (impurity)
Note: impurity summation: (sand casting)≤2.0; (permanent mold casting)≤2.2
Mechanical property:
Tensile strength sigma
b(MPa):>=145
Percentage elongation δ
5(%):>=4
Hardness (HB): >=50 (5/250/30)
Casting method:
Sand casting adds Metamorphism treatment, permanent mold casting adds Metamorphism treatment, model casting.
According to specific exemplary embodiment, invention has been described herein.It will be apparent under not departing from the scope of the present invention, carrying out suitable replacement to one skilled in the art or revise.Exemplary embodiment is only illustrative, instead of the restriction to scope of the present invention, and scope of the present invention is defined by appended claim.
Claims (1)
1. the anti-dizziness ball for power transmission line in high altitude region, described anti-dizziness ball comprises spherical shell (1), link plate (2) and baffle plate (5), it is characterized in that described spherical shell (1) is provided with installing hole (3), described link plate (2) is fixed on the inside of described spherical shell (1) and described link plate (2) is provided with hanging hole (4), and described baffle plate (5) is installed on the bottom of described spherical shell (1); Described anti-dizziness ball is by aluminum alloy materials casting;
The end of the spherical shell (1) of described anti-dizziness ball has gap (9);
The quantity of described link plate (2) is two and parallel placement, and the distance between two parallel link plates (2) is greater than the width of described gap (9) along spherical shell (1) weft direction;
The diameter of described installing hole (3) is greater than the diameter of described hanging hole (4);
Described baffle plate (5) is installed on the bottom having described gap (9) of described spherical shell (1), and the width of described baffle plate (5) is greater than the width of described gap (9) along spherical shell (1) weft direction;
Described baffle plate (5) casting or be welded on described spherical shell (1) and link plate (2);
Described anti-dizziness ball presses GB 1173-1995 Birmasil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110137653.0A CN102306919B (en) | 2011-05-25 | 2011-05-25 | Anti-corona sphere for power transmission line in high altitude region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110137653.0A CN102306919B (en) | 2011-05-25 | 2011-05-25 | Anti-corona sphere for power transmission line in high altitude region |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102306919A CN102306919A (en) | 2012-01-04 |
| CN102306919B true CN102306919B (en) | 2015-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110137653.0A Active CN102306919B (en) | 2011-05-25 | 2011-05-25 | Anti-corona sphere for power transmission line in high altitude region |
Country Status (1)
| Country | Link |
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| CN (1) | CN102306919B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296622B (en) * | 2013-05-27 | 2016-08-10 | 国家电网公司 | A kind of shield ball fitting for converter station valve hall |
| CN103837710B (en) * | 2014-03-12 | 2017-12-01 | 国家电网公司 | The corona-proofing device of electronic measurement system under a kind of extra-high voltage electric field environment |
| US10992201B2 (en) | 2017-08-07 | 2021-04-27 | General Electric Company | Electrical propulsion system with corona suppression on a vehicle |
| CN108736424A (en) * | 2018-05-27 | 2018-11-02 | 徐峰 | The anticorona mask of wire clamp |
| CN108649513A (en) * | 2018-05-27 | 2018-10-12 | 徐峰 | Reduce the mask of corona discharge |
| CN108666955B (en) * | 2018-05-27 | 2020-06-02 | 乐清海创智能科技有限公司 | Device for reducing corona discharge of power transmission wire clamp |
| CN108736462B (en) * | 2018-05-27 | 2020-04-14 | 张辉 | Device for reducing corona discharge |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3046327A (en) * | 1959-06-10 | 1962-07-24 | Ohio Brass Co | Corona ball |
| CN2245286Y (en) * | 1995-07-28 | 1997-01-15 | 成都电力金具总厂 | Anti-dizziness ball for transmission line |
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2011
- 2011-05-25 CN CN201110137653.0A patent/CN102306919B/en active Active
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| CN102306919A (en) | 2012-01-04 |
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| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20130520 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20130520 Address after: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Applicant after: China Electric Power Research Institute Applicant after: State Grid Corporation of China Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Applicant before: China Electric Power Research Institute |
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| C14 | Grant of patent or utility model | ||
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