EP3552219B1 - Isolant haute tension doté d'un anneau de garde contre les arcs électriques - Google Patents

Isolant haute tension doté d'un anneau de garde contre les arcs électriques Download PDF

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Publication number
EP3552219B1
EP3552219B1 EP17808504.9A EP17808504A EP3552219B1 EP 3552219 B1 EP3552219 B1 EP 3552219B1 EP 17808504 A EP17808504 A EP 17808504A EP 3552219 B1 EP3552219 B1 EP 3552219B1
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EP
European Patent Office
Prior art keywords
insulator
voltage
long rod
shields
protective
Prior art date
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Active
Application number
EP17808504.9A
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German (de)
English (en)
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EP3552219A1 (fr
Inventor
Wolfgang Tauber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayernwerk Netz GmbH
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Bayernwerk Netz GmbH
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
    • H01B17/44—Structural association of insulators with corona rings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/52—Insulators or insulating bodies characterised by their form having cleaning devices
    • H01B17/525—Self-cleaning, e.g. by shape or disposition of screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/56—Insulating bodies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/02—Suspension insulators; Strain insulators

Definitions

  • the invention relates to a high-voltage insulator with an arc protection ring.
  • Above-ground high-voltage lines are routed regularly over high-voltage pylons.
  • high-voltage insulators are provided at the suspension points between the high-voltage lines and the high-voltage pylons. Long rod insulators are often used here, which are suspended from the crossbars of the high-voltage pylon and at the free end of which the high-voltage line is attached.
  • arc protection rings are known.
  • the arc protection rings are arranged at both ends of the actual insulator and essentially surround the insulator in a ring shape. Since the arc protection rings are made of metal and are therefore electrically conductive, the arc either forms directly between the arc protection rings or the base points of the arc migrate to the arc protection rings shortly after the arc is created. As a result, direct contact or immediate proximity between the arc and the actual insulator is only present for a short time or is completely avoided. This can reduce damage to the insulator
  • the CN 103 700 453 A describes a high-voltage insulator in which the individual insulator screens have alternating diameters.
  • An arc protection ring is provided at the ends of the respective (partial) insulators.
  • the invention is therefore based on the object of creating a high-voltage insulator with an arc protection ring in which the disadvantages known from the prior art no longer occur or only occur to a reduced extent.
  • the invention relates to a high-voltage insulator comprising a long-rod insulator with a shaft and circular shields arranged thereon, an insulator cap at the upper end of the long-rod insulator for fastening the high-voltage insulator to a high-voltage pylon and an arc protection ring surrounding the insulator cap or the part of the long-rod insulator closest to the insulator cap, with at least the uppermost screen of the long rod insulator closest to the insulator cap is designed as a protective screen for the other screens, the maximum diameter of the other screens being at least 30 mm smaller than the inner diameter of the arc protection ring, the diameter of the at least one protective screen being at least 10 mm smaller than the inner diameter of the arc protection ring and the diameter of the at least one protective screen is at least 20 mm larger than the maximum diameter of the other screens.
  • At least one of the circular screens provided on the long rod insulator - namely at least the one closest to the insulator cap and thus the uppermost screen - be designed as a protective screen for the other screens, whereby the functionality of the insulator or the arc protection ring should not be restricted.
  • "Other shields” are those shields of a long rod insulator that are not designed as protective shields or a protective shield.
  • the at least one shield of the long rod insulator designed as a protective shield should have a radius that is at least 20 mm larger than the other shields, with the largest diameter of the other shields being used in particular with alternating diameters of the other shields. It has been shown that a correspondingly larger diameter of the protective screen can already provide adequate protection against soiling of the other screens underneath with bird droppings.
  • the bird droppings landed on a protective screen can be washed off in the event of rain, which, due to the larger diameter, occurs in particular on the screens designed as protective screens, so that a self-cleaning effect occurs.
  • the diameter of the at least one screen designed as a protective screen is at least 10 mm smaller than the inner diameter of the arc protection ring, it is ensured that neither the arc protection is impaired nor the shields designed as protective shields are damaged in the event of an arc.
  • a distance of 10 mm between the screen and the protective ring may be sufficient, since due to the geometry resulting from the close proximity between the screen and the protective ring in the axial direction of the long rod insulator, when an arc occurs a base point on the arc protection ring, this screen is sufficiently spaced from the arc and no damage is to be expected.
  • the other shields are also adequately protected from damage by an arc due to their diameter, which is at least 30 mm smaller than the inner diameter of the arc protection ring.
  • the diameter of the at least one protective screen is at least 17.5 mm and / or at most 42.5 mm smaller than the inner diameter of the arc protection ring.
  • the mentioned lower limit ensures that, in addition to the uppermost screen, other screens designed as protective screens are also adequately protected from damage by a possible arc.
  • the maximum difference in diameter of 42.5 mm ensures that one of the base points of any arc that may arise on the long rod insulator moves directly onto the arc protection ring.
  • the diameter of the at least one protective screen is preferably at most 40 mm larger than the maximum diameter of the other screens.
  • a maximum diameter of 40 mm for the protective screens is sufficient to protect the other screens from the build-up of bird droppings and to prevent conductive wetting of the other screens with a mixture of water and bird droppings when it rains.
  • the difference in diameter can usually be achieved so that the fittings for fastening the high-voltage insulator and the arc protection ring can remain unchanged compared to an insulator according to the prior art with comparable insulation properties.
  • the lowermost screen which is furthest away from the insulator cap, is designed in accordance with a protective screen. Even if this bottom screen cannot protect against bird droppings compared to the other screens, a configuration corresponding to a protective screen - that is, in particular with a comparable diameter - is advantageous for transporting and storing the high-voltage insulator or its long-rod insulator.
  • At least one screen that is not located at one end of the long rod insulator is also designed as a protective screen. Since an internal shield of the long rod insulator is designed as a protective shield - that is, it has a diameter that is comparable or the same as the other protective shields - the risk of the long rod insulator breaking through during transport and storage in a horizontal position can be further reduced.
  • an internal protective screen can also protect the screens underneath from contamination from above, which has not already been prevented by the uppermost protective screen.
  • At least two other adjacent screens of the long rod insulator can have different projections. The alternation of screen diameters is then no longer limited to pairings of protective screens and other screens, but also expressly includes at least two adjacent other screens. The creepage distance across the insulator can be extended by different projections of adjacent screens.
  • the long rod insulator can comprise at least ten, preferably at least fifteen screens and / or be made of ceramic or glass fiber reinforced plastic.
  • the long rod insulator can be designed in accordance with the standards DIN EN 61466/2 (composite long rod insulator) or DIN 48006/2 (long rod insulator), the shields designed as protective shields being modifications of these standards.
  • the individual screens of the long rod insulator can have peripheral drip edges on their outer edge.
  • the high-voltage insulator can also have an arc protection ring at its lower end.
  • the high-voltage insulator 1 comprises a long rod insulator 10, which is connected at its upper end to an insulator cap 2.
  • the high-voltage insulator 1 can be fastened, for example, to a crossbeam of a high-voltage pylon via this insulator cap 2, which is designed as a fork cap.
  • an insulator cap 2 'designed as a fork cap is also provided.
  • the high-voltage line can be attached to this lower insulator cap 2 '.
  • An arc protection ring 3, 3 ' is arranged around the insulator caps 2, 2' and surrounds the respective ends of the long rod insulator 10.
  • the arc protection rings 3, 3 ' are designed as metal rings which, in the event of an arc, can form base points via the high-voltage insulator, via which the arc current is diverted into the earth.
  • the two arc protection rings 3, 3 'can have horn arresters in order to be self-extinguishing.
  • the long rod insulator 10 is made of ceramic and comprises a shaft 11 and circular screens 12 arranged thereon. In the example shown, twenty screens 12 are provided.
  • the long rod insulator 10 and thus also the screens 12 are designed essentially in accordance with the DIN 48006/2 standard, all screens 12 having peripheral drip edges 13 on their outer edge.
  • the insulator caps 2, 2 'and the arc protection rings 3, 3' can also be standardized components.
  • the uppermost screen 12 of the long rod insulator 10 that is to say closest to the upper insulator cap 2 is designed as a protective screen 12 '.
  • the other screens 12 ′′ which are not designed as protective screens, have a maximum diameter which is approx. 37.5 mm smaller than the inner diameter of the arc protection rings 3, 3 '
  • the diameter of the protective screen 12' is only approx. 17.5 mm smaller than the inner diameter of the upper arc protection ring 3.
  • the diameter of the protective screen 12 ' is thus approximately 20 mm larger than the maximum diameter of the other screens 12 ".
  • the uppermost screen 12 of the long rod insulator 10 as a protective screen 12 ', the other screens 12 "below are protected from bird droppings.
  • the functionality of the arc protection rings 3, 3 ' is not restricted in any way.
  • FIG 2 an embodiment of a high-voltage insulator 1 according to the invention is shown.
  • the high-voltage insulator 1 largely compensates for that Figure 1 , which is why reference is made to the statements above. Only the long rod insulator 10 is, as explained below, according to the example Figure 1 executed differently.
  • the long rod insulator 10 is again made of ceramic and comprises a shaft 11 and circular screens 12 arranged thereon, although in principle each adjacent screens 12 have different projections or diameters.
  • the screens 12 are each designed analogously to the DIN 48006/2 standard and have - albeit in Figure 2 not explicitly shown - one drip edge 13 each (cf. Figure 1 ) on.
  • the uppermost screen 12 of the long rod insulator 10, which is closest to the upper insulator cap 2, and a screen 12 located in the middle and therefore not at the end of the long rod insulator 10 are each designed as a protective screen 12 '; the lowest screen, which is closest to the lower insulator cap 2', is designed as a protective screen 12 ' .
  • the screens 12 'in question have a diameter which is approximately 17.5 mm smaller than the inner diameter of the two arc protection rings 3, 3'.
  • the diameter of these screens 12 is approximately 20 mm larger than the maximum diameter of those screens 12 ′′ that are not configured as protective screens 12 'or correspondingly as protective screens 12'.
  • the larger ones result in those that are not configured as protective screens 12 ' other screens 12 ′′ have a diameter that is approximately 37.5 mm smaller than the inner diameter of the arc protection rings 3, 3 ′, while the smaller of the other screens shown in FIG Embodiment are about 47.5 mm smaller than the named inner diameter.
  • the protective screens 12 'at the upper end and in the middle of the long rod insulator 10 offer protection against soiling, in particular from bird droppings, compared to the screens 12 "below 12 ′ essentially the transport and storage of the long rod insulator 10 in a horizontal position, in particular also before the insulator caps 2, 2 ′ are attached to the long rod insulator 10.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulators (AREA)

Claims (6)

  1. Isolateur à haute tension (1), comprenant un isolateur à long fût (10) pourvu d'une tige (11) et d'au moins dix écrans circulaires (12) disposés sur celle-ci, un capuchon d'isolateur (2) à l'extrémité supérieure de l'isolateur à long fût (10), destiné à fixer l'isolateur haute tension (1) à un pylône à haute tension, et un anneau de garde contre les arcs électriques (3) entourant le capuchon d'isolateur (2) ou la partie de l'isolateur à long fût (10) la plus proche du capuchon d'isolateur (2), caractérisé en ce que l'écran supérieur (12) de l'isolateur à long fût (10) le plus proche du capuchon d'isolateur (2), l'écran inférieur (12) le plus éloigné du capuchon d'isolateur (2) à l'extrémité supérieure de l'isolateur à long fût (10), ainsi qu'un écran (12) qui ne se trouve pas à une extrémité de l'isolateur à long fût (10) sont respectivement réalisés sous forme d'écrans de protection (12'), dans lequel le diamètre maximal des autres écrans (12"), qui ne sont pas réalisés sous forme d'écrans de protection (12'), est inférieur au minimum de 30 mm au diamètre intérieur de l'anneau de garde contre les arcs électriques (3), le diamètre des écrans de protection (12') est inférieur au minimum de 10 mm au diamètre intérieur de l'anneau de garde contre les arcs électriques (3), et le diamètre des écrans de protection (12') est supérieur au minimum de 20 mm au diamètre maximal des autres écrans (12").
  2. Isolateur à haute tension selon la revendication 1, caractérisé en ce que le diamètre des écrans de protection (12') est inférieur au minimum de 17,5 mm et/ou au maximum de 42,5 mm au diamètre intérieur de l'anneau de garde contre les arcs électriques (3).
  3. Isolateur à haute tension selon l'une quelconque des revendications précédentes, caractérisé en ce que le diamètre des écrans de protection (12') est supérieur au maximum de 40 mm au diamètre maximal des autres écrans (12") .
  4. Isolateur à haute tension selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins deux autres écrans (12) voisins de l'isolateur à long fût (10) présentent des portées différentes.
  5. Isolateur à haute tension selon l'une quelconque des revendications précédentes, caractérisé en ce que l'isolateur à long fût (10) comprend au moins quinze écrans.
  6. Isolateur à haute tension selon l'une quelconque des revendications précédentes, caractérisé en ce que l'isolateur à long fût (10) est composé de céramique ou de matière plastique renforcée fibres de verre.
EP17808504.9A 2016-12-06 2017-12-06 Isolant haute tension doté d'un anneau de garde contre les arcs électriques Active EP3552219B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16202324.6A EP3333858A1 (fr) 2016-12-06 2016-12-06 Isolant haute tension doté d'un anneau de garde contre les arcs électriques
PCT/EP2017/081606 WO2018104353A1 (fr) 2016-12-06 2017-12-06 Isolateur à haute tension présentant une bague anti-arc

Publications (2)

Publication Number Publication Date
EP3552219A1 EP3552219A1 (fr) 2019-10-16
EP3552219B1 true EP3552219B1 (fr) 2021-05-19

Family

ID=57517729

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16202324.6A Withdrawn EP3333858A1 (fr) 2016-12-06 2016-12-06 Isolant haute tension doté d'un anneau de garde contre les arcs électriques
EP17808504.9A Active EP3552219B1 (fr) 2016-12-06 2017-12-06 Isolant haute tension doté d'un anneau de garde contre les arcs électriques

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP16202324.6A Withdrawn EP3333858A1 (fr) 2016-12-06 2016-12-06 Isolant haute tension doté d'un anneau de garde contre les arcs électriques

Country Status (4)

Country Link
US (1) US20190392965A1 (fr)
EP (2) EP3333858A1 (fr)
CN (1) CN110050312A (fr)
WO (1) WO2018104353A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3827891B1 (fr) 2019-11-28 2022-02-16 Carl Freudenberg KG Élément filtrant avec bande de bord conductrice et dispositif de filtrage comprenant un tel élément filtrant
CN112259305B (zh) * 2020-10-12 2022-03-25 江西省萍乡市南坑高压电瓷有限公司 一种自洁型纳米釉面瓷伞形绝缘子及其使用方法

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
JP3217525B2 (ja) * 1993-02-10 2001-10-09 古河電気工業株式会社 ポリマー碍子の劣化防止装置
CN1255821C (zh) * 2003-10-16 2006-05-10 武汉市德赛电力设备有限公司 单元串接式复合绝缘子
CN2872557Y (zh) * 2006-02-10 2007-02-21 南方电网技术研究中心 特高压合成绝缘子用双环封闭式均压保护装置
CN201298408Y (zh) * 2008-11-29 2009-08-26 河南省电力公司焦作供电公司 一种防鸟粪的绝缘子
CN201336189Y (zh) * 2008-12-26 2009-10-28 中国西电电气股份有限公司 一种±500kV直流棒形支柱瓷绝缘子
CN201498279U (zh) * 2009-08-28 2010-06-02 江苏祥源电气设备有限公司 一种加大伞复合绝缘子
CN202110896U (zh) * 2010-12-28 2012-01-11 河南博特电气有限公司 一种新型复合悬式绝缘子
CN203325598U (zh) * 2013-05-04 2013-12-04 山西省电力公司晋中供电分公司 防冰雪复合绝缘子
CN203338884U (zh) * 2013-06-19 2013-12-11 国家电网公司 复合绝缘子
CN103700453A (zh) * 2013-11-28 2014-04-02 国家电网公司 一种1200kV特高压棒形悬式复合绝缘子

Non-Patent Citations (1)

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Also Published As

Publication number Publication date
EP3333858A1 (fr) 2018-06-13
WO2018104353A1 (fr) 2018-06-14
US20190392965A1 (en) 2019-12-26
CN110050312A (zh) 2019-07-23
EP3552219A1 (fr) 2019-10-16

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