CN203164229U - Ultrahigh/extra-high voltage anti-corona voltage-equalizing ball lead - Google Patents
Ultrahigh/extra-high voltage anti-corona voltage-equalizing ball lead Download PDFInfo
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- CN203164229U CN203164229U CN 201320120136 CN201320120136U CN203164229U CN 203164229 U CN203164229 U CN 203164229U CN 201320120136 CN201320120136 CN 201320120136 CN 201320120136 U CN201320120136 U CN 201320120136U CN 203164229 U CN203164229 U CN 203164229U
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Abstract
The utility model provides an ultrahigh/extra-high voltage anti-corona voltage-equalizing ball lead which comprises voltage-equalizing balls (1) and a lead rope (2). Each voltage-equalizing ball is a hollow sphere having a radius R1 and having a part recessed inwards, wherein the part recessed inwards is part of a spherical surface of a sphere having a radius R2, R2 being equal to or larger than R1. Two circle holes are disposed in a direction of a connecting line of the center of the sphere having the radius R1 and the center of the sphere having the radius R2 on the spherical surface of each voltage-equalizing ball. The number of the voltage-equalizing balls (1) is at least two. The lead rope (2) sequentially penetrates two circle holes of the at least two voltage-equalizing balls (1), so that the voltage-equalizing balls (1) are sequentially arranged on the lead rope (2). The hollow sphere part having the radius R1 of the voltage-equalizing ball (1) is arranged in the part recessed inwards of a next voltage-equalizing ball (1). According to the provided ultrahigh/extra-high voltage anti-corona voltage-equalizing ball lead, each voltage-equalizing ball is in the shape of a hollow sphere having a part recessed inwards, and thus the field intensity of a surface of each voltage-equalizing ball is smaller than that of a voltage-equalizing ball in the shape of a sheer hollow sphere in the same size.
Description
Technical field
The utility model relates to the high-voltage connection field, is specifically related to the anticorona voltage equalizing ball lead-in wire of a kind of ultra-high/extra-high voltage.
Background technology
In the ultra-high/extra-high voltage test, at high-voltage connection corona phenomenon appears because trial voltage is too high, lead-in wire is meticulous often, and measurement result produced seriously influence, sometimes even cause test failure, therefore must the corona phenomenon on the lead-in wire be suppressed or be eliminated.
High-voltage connection be experiment power supply with subjects between link to each other " main channel ", the correct selection of high-voltage connection has very important effect to accuracy and the reliability of test, must cause the great attention of testing crew.At present, more and more higher to the requirement of experiment work, if site test is lack of standardization with lead-in wire, can bring bigger uncertainty to measurement data.During content of the test aspect the corona discharge that carries out subjects, the anticorona problem of high-voltage connection will seem especially outstanding.Theory and field practice suffice to show that high-voltage connection has considerable influence to test process and result.
The generation of corona is because rough conductor produces inhomogeneous electric field, when voltage is elevated to certain value, because free of air will discharge, forms corona near the electrode that radius-of-curvature is little around inhomogeneous electric field.Because the peripheral electric field at corona is very weak, it is free not bump, and the peripheral charged particle of corona substantially all is electron ion, and these ions have just formed corona discharge current.Briefly, the little conductor electrode of radius-of-curvature has just produced corona to atmospherical discharges.When corona takes place, except halation is arranged, also have discharge sound, corona current is a desultory high-frequency pulse current, causes active loss and radio interference of communications, produces ozone and nitrogen oxides pollution environment.
In electromagnetic environment when test of carrying out high-tension apparatus, during such as the audible noise of ultra-high/extra-high voltage, radio interference and corona loss test, must make corona free discharge generation on the high-voltage connection.Present high-voltage connection, adopt three kinds of structures mostly: the squirrel-cage split conductor, all press the ball line and the pipe bus.Wherein manage the anticorona best results of bus, but can not be crooked because the pipe bus length is fixed, weight is big and make its supporting construction comparatively complicated, the use of therefore managing bus has certain restriction.The squirrel-cage split conductor is owing to the difficult reduction of its surperficial electric field intensity, thereby its anticorona effect is relatively poor, is applicable to the high-voltage connection structure of longer distance.All press more that the ball line uses in short-range high-voltage connection, have advantages such as lighter weight, retractility be strong, but the electric field intensity on ball surface can be bigger when electric pressure is higher, ball need be done to such an extent that very big ability satisfies surperficial corona free discharge requirement usually.
The utility model content
The utility model relates to the anticorona voltage equalizing ball lead-in wire of a kind of ultra-high/extra-high voltage, comprise voltage equalizing ball 1 and lead-in wire rope 2, voltage equalizing ball 1 is the hollow ball of R1 for the radius that a part caves inward, and the part that caves inward is the part of sphere of the spheroid of R2, wherein R2 〉=R1 for radius; Voltage equalizing ball sphere upper edge radius is that the line direction of the centre of sphere of two spheroids of R1 and R2 is provided with two circular holes; The quantity of voltage equalizing ball 1 is at least two, and lead-in wire rope 2 passes two circular holes of at least two voltage equalizing ball 1 successively, each voltage equalizing ball 1 is arranged in order is arranged on the lead-in wire rope 2; The radius of a voltage equalizing ball 1 is that the hollow ball of R1 partly is arranged in the part that caves inward of next voltage equalizing ball 1.
In first preferred embodiment that the utility model provides: the part that described voltage equalizing ball (1) caves inward and described radius are that to form radius be the circular chamfering of R3 in the junction of the hollow ball part of R1.
In second preferred embodiment that the utility model provides: described lead-in wire rope (2) is wire rope, steel strand wires, steel-cored aluminium strand or copper cash.
In the 3rd preferred embodiment that the utility model provides: described R1 is 150mm, the size of described R2 is 150mm, described R3 is 20mm, the scope of the diameter of described two circular holes on the described voltage equalizing ball (1) is 11-20mm, described voltage equalizing ball (1) wall thickness 1mm, described lead-in wire rope (2) are the wire rope of 10mm for diameter.
The beneficial effect of the anticorona voltage equalizing ball lead-in wire of a kind of ultra-high/extra-high voltage that the utility model provides comprises:
1, the anticorona voltage equalizing ball lead-in wire of a kind of ultra-high/extra-high voltage of providing of the utility model, lead-in wire rope quality is little, and flexible big, retractility is strong, dismounting that can be more convenient and installation, the high pressure that is suitable for short distance, the unfixed occasion of two ends relative position connects.
2, voltage equalizing ball is to have the hollow ball build shape of part that caves inward, the hollow ball of a voltage equalizing ball partly is arranged in the part that caves inward of next voltage equalizing ball, and the voltage equalizing ball surface electric field intensity is littler than the surface electric field intensity of the voltage equalizing ball of the hollow ball bodily form of equal size.
Description of drawings
Be illustrated in figure 1 as the schematic cross-section of a kind of voltage equalizing ball that the utility model provides;
Be illustrated in figure 2 as the anticorona voltage equalizing ball lead-in wire of a kind of ultra-high/extra-high voltage schematic cross-section that the utility model provides;
Be illustrated in figure 3 as the electric field intensity synoptic diagram on voltage equalizing ball surface of the embodiment of traditional 800KV voltage equalizing ball lead-in wire;
The electric field intensity synoptic diagram on the voltage equalizing ball surface of the embodiment that the anticorona voltage equalizing ball of 800KV that being illustrated in figure 4 as the utility model provides goes between.
Embodiment
With reference to the accompanying drawings embodiment of the present utility model is described in further detail below.
The utility model provides a kind of ultra-high/extra-high voltage anticorona voltage equalizing ball lead-in wire, comprise voltage equalizing ball 1 and lead-in wire rope 2, the schematic cross-section of voltage equalizing ball as shown in Figure 1, as shown in Figure 1, voltage equalizing ball 1 is the hollow ball of R1 for the radius that a part caves inward, this part that caves inward is the part of sphere of the spheroid of R2, wherein R2 〉=R1 for radius.
Voltage equalizing ball sphere upper edge radius is that the line direction of the centre of sphere of two spheroids of R1 and R2 is provided with two circular holes.
The structural representation that the anticorona voltage equalizing ball of a kind of ultra-high/extra-high voltage that being illustrated in figure 2 as the utility model provides goes between, as shown in Figure 2, the quantity of voltage equalizing ball 1 is at least two, lead-in wire rope 2 passes two circular holes of each voltage equalizing ball 1 successively, each voltage equalizing ball 1 is arranged in order is arranged on the lead-in wire rope 2, and the radius of a voltage equalizing ball 1 is that the hollow ball of R1 partly is arranged in the part that caves inward of next voltage equalizing ball 1.
Preferably, the part that voltage equalizing ball caves inward and radius are that to form radius be the circular chamfering of R3 in the junction of the hollow ball part of R1, avoid occurring wedge angle.
Lead-in wire rope 2 weight that should have enough intensity to be enough to bear voltage equalizing ball 1 can be used wire rope, steel strand wires, steel-cored aluminium strand or copper cash.Lead-in wire rope quality is little, and flexible big, retractility is strong, dismounting that can be more convenient and installation, and the high pressure that is suitable for short distance, the unfixed occasion of two ends relative position connects.
The diameter of two circular holes that arrange on the voltage equalizing ball gets final product than the slightly larger in diameter of lead-in wire rope.
Be illustrated in figure 3 as the electric field intensity synoptic diagram on voltage equalizing ball surface of the embodiment of traditional 800KV voltage equalizing ball lead-in wire, among the embodiment of this tradition 800KV voltage equalizing ball lead-in wire, voltage equalizing ball is that radius is the georama of 150mm, the wall thickness of voltage equalizing ball is 1mm, the lead-in wire rope is the wire rope of 10mm for diameter, 18 meters apart from ground in lead-in wire rope.As seen from Figure 3, among this embodiment, the maximum field intensity on the spherical voltage equalizing ball of open circles surface is 15.7KV/cm.
The electric field intensity synoptic diagram on the voltage equalizing ball surface of the embodiment that the anticorona voltage equalizing ball of 800KV that being illustrated in figure 4 as the utility model provides goes between, among the embodiment of the anticorona voltage equalizing ball lead-in wire of the 800KV that this utility model provides, R1 gets 150mm, the scope of R2 size is 150mm～200mm, in this embodiment, R2 gets 150mm, R3 gets 20mm, the scope of the diameter of two circular holes on the voltage equalizing ball is 11-20mm, voltage equalizing ball wall thickness 1mm, the lead-in wire rope is the wire rope of 10mm for diameter, 18 meters apart from ground in lead-in wire rope.As seen from Figure 4, among this embodiment, the maximum field intensity on the spherical voltage equalizing ball of the open circles surface of band sunk part is 13.2KV/cm.
Contrasted as can be seen by Fig. 3 and Fig. 4, the anticorona voltage equalizing ball lead-in wire of a kind of ultra-high/extra-high voltage that the utility model provides under the same conditions, can reduce the maximum field intensity on voltage equalizing ball surface a lot, can slacken and suppress the interference that corona discharge produces.
Should be noted that at last: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although with reference to above-described embodiment the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or be equal to replacement embodiment of the present utility model, and do not break away from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (4)
1. the anticorona voltage equalizing ball of ultra-high/extra-high voltage goes between, it is characterized in that, the anticorona voltage equalizing ball lead-in wire of described ultra-high/extra-high voltage comprises voltage equalizing ball (1) and lead-in wire rope (2), described voltage equalizing ball (1) is the hollow ball of R1 for the radius that a part caves inward, the described part that caves inward is the part of sphere of the spheroid of R2, wherein R2 〉=R1 for radius;
The described radius in described voltage equalizing ball sphere upper edge is that the line direction of the centre of sphere of two spheroids of R1 and R2 is provided with two circular holes;
The quantity of described voltage equalizing ball (1) is at least two, and described lead-in wire rope (2) passes described two circular holes of described at least two voltage equalizing ball (1) successively, each described voltage equalizing ball (1) is arranged in order is arranged on the described lead-in wire rope (2);
The radius of a described voltage equalizing ball (1) is that the hollow ball of R1 partly is arranged in the part that caves inward of next described voltage equalizing ball (1).
2. voltage equalizing ball as claimed in claim 1 lead-in wire is characterized in that, the part that described voltage equalizing ball (1) caves inward and described radius are that to form radius be the circular chamfering of R3 in the junction of the hollow ball part of R1.
3. voltage equalizing ball lead-in wire as claimed in claim 1 is characterized in that described lead-in wire rope (2) is wire rope, steel strand wires, steel-cored aluminium strand or copper cash.
4. voltage equalizing ball as claimed in claim 2 goes between, it is characterized in that, described R1 is 150mm, the size of described R2 is 150mm, described R3 is 20mm, the scope of the diameter of described two circular holes on the described voltage equalizing ball (1) is 11-20mm, and described voltage equalizing ball (1) wall thickness 1mm, described lead-in wire rope (2) are the wire rope of 10mm for diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320120136 CN203164229U (en) | 2013-03-15 | 2013-03-15 | Ultrahigh/extra-high voltage anti-corona voltage-equalizing ball lead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320120136 CN203164229U (en) | 2013-03-15 | 2013-03-15 | Ultrahigh/extra-high voltage anti-corona voltage-equalizing ball lead |
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| Publication Number | Publication Date |
|---|---|
| CN203164229U true CN203164229U (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320120136 Expired - Lifetime CN203164229U (en) | 2013-03-15 | 2013-03-15 | Ultrahigh/extra-high voltage anti-corona voltage-equalizing ball lead |
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| CN (1) | CN203164229U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207292A (en) * | 2013-03-15 | 2013-07-17 | 中国电力科学研究院 | Ultra-high/extra-high voltage anti-corona voltage-sharing ball lead |
| CN108346951A (en) * | 2017-01-24 | 2018-07-31 | 中国石油化工股份有限公司 | A kind of anticorona lead of high pressure and production method |
| CN113419104A (en) * | 2021-06-30 | 2021-09-21 | 兴化市永安电力工具有限公司 | Extra-high voltage direct current non-contact intelligent electroscope |
-
2013
- 2013-03-15 CN CN 201320120136 patent/CN203164229U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207292A (en) * | 2013-03-15 | 2013-07-17 | 中国电力科学研究院 | Ultra-high/extra-high voltage anti-corona voltage-sharing ball lead |
| CN108346951A (en) * | 2017-01-24 | 2018-07-31 | 中国石油化工股份有限公司 | A kind of anticorona lead of high pressure and production method |
| CN108346951B (en) * | 2017-01-24 | 2020-10-23 | 中国石油化工股份有限公司 | High-voltage anticorona lead and manufacturing method thereof |
| CN113419104A (en) * | 2021-06-30 | 2021-09-21 | 兴化市永安电力工具有限公司 | Extra-high voltage direct current non-contact intelligent electroscope |
| CN113419104B (en) * | 2021-06-30 | 2022-04-26 | 兴化市永安电力工具有限公司 | Extra-high voltage direct current non-contact intelligent electroscope |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |