EP2669903B1 - Paratonnerre capsulé avec passage central - Google Patents

Paratonnerre capsulé avec passage central Download PDF

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Publication number
EP2669903B1
EP2669903B1 EP12170022.3A EP12170022A EP2669903B1 EP 2669903 B1 EP2669903 B1 EP 2669903B1 EP 12170022 A EP12170022 A EP 12170022A EP 2669903 B1 EP2669903 B1 EP 2669903B1
Authority
EP
European Patent Office
Prior art keywords
housing
surge arrester
end fitting
earth
housing cover
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.)
Active
Application number
EP12170022.3A
Other languages
German (de)
English (en)
Other versions
EP2669903A1 (fr
Inventor
Markus Sulitze
Gundolf Barenthin
Ingo Gottschalk
Erhard Pippert
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.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP12170022.3A priority Critical patent/EP2669903B1/fr
Priority to JP2015514395A priority patent/JP6113274B2/ja
Priority to CN201380028701.XA priority patent/CN104350553B/zh
Priority to PCT/EP2013/058612 priority patent/WO2013178411A1/fr
Priority to KR1020147033168A priority patent/KR101674785B1/ko
Publication of EP2669903A1 publication Critical patent/EP2669903A1/fr
Application granted granted Critical
Publication of EP2669903B1 publication Critical patent/EP2669903B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H01C7/123—Arrangements for improving potential distribution
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure

Definitions

  • surge arresters are protective systems, for example, for switchgear, which in case of overvoltages caused by lightning or malfunction of other subsystems derive these surges to ground out and protect other components of the switchgear.
  • a surge arrester comprises one or more cylindrical diverting elements, which have a varistor column made up of individual, likewise cylindrical varistor elements.
  • Varistor elements are characterized by a voltage-dependent resistance. At low voltages these act as insulators. From a certain threshold voltage, which is material-dependent, they show a good conductivity.
  • varistor elements are made of metal oxides such as zinc oxide. The diverter is limited at both ends by end fittings that make electrical contact with the switchgear and ground.
  • the varistor column must be held together under pressure. This can be done by tension members, for example, ropes or rods are preferably clamped in glass fiber reinforced plastic in the end fittings under train.
  • the tension elements surround the varistor column and thus form a cage around them.
  • For use in gas-insulated switchgear surge arresters have a fluid-tight housing, which surrounds one or more diverting elements.
  • the housing is filled to increase the dielectric strength with a fluid, usually sulfur hexafluoride.
  • the housing is usually made of metal and is electrically grounded. An end fitting of the discharge element is grounded via a contact made through the housing.
  • the other end fitting is electrically connected via a high voltage feedthrough with a located on the outside of the housing contact, which serves to connect to the switchgear.
  • larger surge arresters often have at their high voltage end of a control hood, which is slipped over the end of the varistor column as a cylinder closed on one side.
  • the varistor column is electrically connected to the end fittings and the earth-side end fitting to the housing cover, so that an electrical connection of the varistor column with the housing. About the grounding of the housing then the connection of the varistor column is made to earth. If occurring discharge processes are to be registered, the varistor column must be connected to a monitoring device arranged outside the fluid-tight housing.
  • a surge arrester has a discharge column arranged in a housing.
  • the delivery column comprises a discharge element, Tensile elements and a ground-side and a high-voltage side end fitting.
  • the discharge element is clamped between the end fittings by means of the tension elements.
  • the surge arrester has an electrical leadthrough with a current path insulated from the housing from the interior of the housing to the exterior of the housing.
  • a longitudinal axis of the feedthrough is arranged coaxially with a longitudinal axis of the diverting element and the diverting element is electrically connected to the feedthrough via connecting means.
  • the connecting means form an electrical connection between the discharge element and the feedthrough, which is electrically insulated from the earth-side end fitting and which is guided through a passage opening in the earth-side end fitting.
  • the housing is formed fluid-tight and filled with an insulating gas.
  • an insulating gas In particular, if sulfur hexafluoride is used as the insulating gas, it is possible to construct very compact surge arresters by virtue of the fact that insulating distances are less than air.
  • the housing has a housing cover, on which the earth-side end fitting is arranged. The implementation leads through the housing cover. As a result, the feed-through and delivery columns can be easily mounted and assembled outside the housing.
  • the housing cover has a pressure compensation device for equalizing an overpressure in the interior of the housing.
  • the housing cover has a closable access opening.
  • An inspection opening allows easy opening of the housing for maintenance purposes.
  • the housing cover has a filling and discharge device for insulating gas.
  • the filling and discharge device With the filling and discharge device, the housing without being opened can be filled with insulating gas or the insulating gas can be removed from the housing for maintenance purposes. This ensures that no insulating gas can escape into the atmosphere.
  • the housing By accommodating pressure compensation devices and / or inspection openings and / or filling and discharge devices in the housing cover, the housing can be constructed more easily.
  • the earth contact has a flat bearing surface, on which the discharge element is supported, and a receptacle for the resilient element.
  • the discharge element is spaced by an electrically insulating spacer element of the earth-side end fitting.
  • the diverter is thereby electrically isolated from the end fitting. This advantageously prevents electrical flashovers between the discharge element and the end fitting.
  • the spacer element is tubular and arranged the resilient element at least partially within the spacer element. This makes a particularly compact design possible. So that insulating gas can penetrate into the tube interior of the spacer element, the spacer element may have openings in the tube wall.
  • the recording of the earth contact is designed as an annular projection for guiding the spacer element and / or the resilient element.
  • the spacer element and / or the resilient element By guiding spacer and / or resilient element assembly is facilitated.
  • the earth-side end fitting is formed by the housing cover.
  • the tension elements of the Ableit yarn are anchored on the ground side directly in the housing cover and thus fix the discharge on the housing cover.
  • the housing cover thus forms the earth-side end fitting, which is particularly material-efficient.
  • FIG. 1 the finished mounted earth-side end of a surge arrester 1 according to the invention is shown without housing.
  • a diverting element 2 is constructed from a plurality of columnar varistor elements and is clamped between two end fittings 5, one on the earth side and one on the high side, of which only the earth side is shown here, by means of tension elements 7, of which only one is shown here.
  • the tension elements 7 are arranged parallel to the longitudinal axis 30 of the diverting element 2 and surround this in the radial direction. By the longitudinal axis 30 of the diverter 2 an axial direction is defined.
  • the tension elements 7 are often made of fiberglass reinforced plastic and with mounting sockets 8, which are crimped onto the tension elements 7, pressed or glued, anchored in the end fittings 5.
  • the tension elements 7 are fastened in an end fitting 5 in a similar manner.
  • a disk-shaped earth contact 3 is arranged at the earth-side end face of the discharge element 2.
  • the spacer element 17 immersed in the axial direction in a circular opening 23 in the end fitting 5 and is supported on a radial projection 24 in this opening 23 from.
  • the spacer 17 is made of a shape and temperature-resistant electrically insulating material and in particular has a high bending strength.
  • the spacer element 17 is made of an electrically insulating material
  • the discharge element 2 is electrically insulated from the earth-side end fitting 5.
  • the ground contact 3 has on its the discharge element 2 facing away End face on an annular projection 21. This has an outer diameter which corresponds to the inner diameter of the spacer element 17, so that the radially outer side of the projection 21 serves as a guide for the spacer element 17.
  • the active part 18 mentioned block of diverter 2, end fittings 5, tension elements 7 with mounting sockets 8, and the spacer 17 can be easily pre-assembled.
  • FIG. 3 shows the earth-side end of such an active part 18, but only one of several tension elements 7 is shown.
  • FIG. 1 further shows the ground-side housing wall of the housing, which is formed by a housing cover 4.
  • a passage 10 is passed through an opening in the housing cover 4.
  • the bushing 10 has an insulating tube 13, an outer insulating bushing 12, an inner insulating bushing 14 and a bushing conductor 11.
  • the insulating tube 13 is first inserted into the opening of the housing cover 4.
  • the insulating tube 13 protrudes on both sides out of the opening.
  • the inner insulating bush 14 is now placed on the inside of the housing cover 4. This is likewise tubular and has an inner diameter which corresponds to the outer diameter of the insulating tube 13.
  • the insulating bush 14 stands in the axial direction over the housing-internal end of the insulating tube 13 via. Insulating tube 13 and inner insulating bushing 14 are arranged coaxially to the longitudinal axis 30.
  • an outer insulating sleeve 12 is placed on the housing outer side end of the insulating tube 13.
  • the outer insulating bush 12 in this case has an annular recess 29 which receives the housing outer side end of the insulating tube 13.
  • An annular projection 28 of the outer insulating sleeve 12 protrudes on the radial inner side of the insulating tube 13 in the axial direction into this.
  • the housing inside End of the feedthrough conductor 11 stands over the inner insulating bushing 14 and protrudes into the housing.
  • a stop, for example a nut, on the housing outer side end of the feedthrough conductor 11 limits its penetration depth.
  • a washer 15 is placed, which rests on the inner insulating bushing 14 and is then fixed with a nut 16.
  • the outer insulating sleeve 12 has at its end faces seals 22, such as O-rings, on which seal the outer insulating sleeve 12 against the housing, here against the housing cover 4, and against the feedthrough 11.
  • the bushing 10 thus constitutes a gas-tight electrical connection from the inside of the housing to the outside of the housing, which is electrically insulated from the housing.
  • FIG. 2 shows a housing cover 4 with such a fully assembled passage 10th
  • FIG. 1 the housing cover 4 with implementation 10 and active part 18 in the assembled state.
  • the end fitting 5 is fixed to the housing cover 4 by means of screws 6.
  • the inner insulating bushing 14 with the housing-internal end of the bushing conductor 11 projects at least partially into the spacer element 17.
  • a resilient element 9 here a coil spring, which is arranged in the interior of the spacer element 17 between earth contact 3 and washer 15, an electrical connection between the ground contact 3 and the bushing 10 is made.
  • Ground contact 3 and spring-elastic element 9 thus constitute connection means which electrically connect the discharge element 2 to the feedthrough 10.
  • the radial inner side of the projection 21 of the earth contact 3 provides a receptacle for the resilient element 9, which is guided and centered by this recording.
  • openings 20 are provided in the wall of the spacer element 17.
  • An electrical current path now leads from the diverter 2 via the ground contact 3, the resilient element 9, washer 15, nut 16 and feedthrough 11 on the outside of the housing. This Current path leads electrically against the end fitting 5 and housing insulated by the end fitting 5 and through the housing wall, here the housing cover 4, through.
  • a surge arrester 1 can also have a plurality of active parts 18 in a housing. Each active part 18 is then assigned its own feedthrough 10, which is arranged coaxially with the diverting element 2 of the respective active part 18.
  • FIG. 4 shows further embodiments of the invention.
  • the earth-side end fitting is formed by the housing cover 4.
  • the tension elements 7 are fastened by means of the mounting bushes 8 directly to the housing cover 4, which thus forms the earth-side end fitting.
  • the housing cover 4 closes off the housing 19 on an end face. Seals 32 ensure gas tightness.
  • Each active part 18 is assigned its own implementation 10.
  • the two active parts 18 have a common earth-side end fitting, which is provided here by the housing cover 4.
  • the housing cover 4 also has a pressure compensation device 25.
  • a rupture disk 26 covers an annular opening in the housing cover 4.
  • the rupture disk 26 is fixed on the inside of the housing with an annular flange 31. Seals 33 seal the rupture disk 26 against the housing cover 4 gas-tight. If an overpressure arises in the housing 19, the rupture disk 26 bursts and releases the excess pressure to the outside, thus preventing damage to the housing 19.
  • a Ausblasschute 27 on the outside of the opening deflects the outflowing gases in a desired direction.
  • the housing cover 4 may have a filling and discharge device for insulating gas and / or a revision opening.
  • the filling and discharge device for insulating gas serves to insulating gas, For example, sulfur hexafluoride to be filled in the housing 19 or to drain from the housing.
  • the filling and discharge device is designed so that no insulating gas can escape uncontrollably.
  • the inspection opening serves, for example, for assembly, maintenance or inspection purposes, to get to elements inside the housing 19 without having to disassemble them.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Thermistors And Varistors (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (10)

  1. Parafoudre (1) pour une installation de distribution, isolé par du gaz et ayant un élément (2) de décharge disposé dans une enveloppe (19) et serré entre une armature (5) d'extrémité du côté de la terre et une armature d'extrémité du côté de la haute tension, au moyen d'éléments (7) de traction, qui sont sous tension, et une traversée (10) électrique, qui a un trajet de courant isolé par rapport l'enveloppe (19), de l'intérieur de l'enveloppe (19) à l'extérieur de l'enveloppe (19), l'enveloppe (19) étant métallique, mise à la terre, étanche au fluide et remplie d'un gaz isolant,
    dans lequel un axe (30) longitudinal de la traversée (10) est coaxial à un axe (30) longitudinal de l'élément (2) de décharge et
    dans lequel l'élément (2) de décharge est relié électriquement à la traversée (10) par des moyens (3, 9) de liaison, qui sont isolés électriquement par rapport à l'armature (5) d'extrémité du côté de la terre et qui passent, par une ouverture (23) de passage, dans l'armature (5) d'extrémité du côté de la terre.
  2. Parafoudre (1) suivant la revendication 1,
    caractérisé
    en ce que l'enveloppe (19) a un couvercle (4) sur lequel est disposée l'armature (5) d'extrémité du côté de la terre.
  3. Parafoudre (1) suivant la revendication 2,
    caractérisé
    en ce que le couvercle (4) de l'enveloppe a un dispositif (25) de compensation de la pression pour compenser une surpression à l'intérieur de l'enveloppe (19).
  4. Parafoudre (1) suivant l'une des revendications 2 ou 3,
    caractérisé
    en ce que le couvercle (4) de l'enveloppe a une ouverture de visite pouvant être fermé.
  5. Parafoudre (1) suivant l'une des revendications 2 à 4,
    caractérisé
    en ce que le couvercle (4) de l'enveloppe a un dispositif de remplissage et d'évacuation de gaz isolant.
  6. Parafoudre (1) suivant l'une des revendications précédentes,
    caractérisé
    en ce que les moyens (3, 9 ) de liaison comportent un contact (3) de terre ayant une surface d'application plane sur laquelle s'appuie l'élément (2) de décharge et un élément (9 ) ayant une élasticité de ressort dans la direction de l'axe (30) longitudinal de la traversée (10), le contact (3) de terre ayant un logement (21) pour l'élément (9 ) ayant une élasticité de ressort.
  7. Parafoudre (1) suivant la revendication 6,
    caractérisé
    en ce que l'élément (2) de décharge est, par un élément (17) d'entretoisement isolant électriquement, à distance de l'armature (5) d'extrémité du côté de la terre.
  8. Parafoudre (1) suivant la revendication 7,
    caractérisé
    en ce que l'élément (17) d'entretoisement est tubulaire et en ce que l'élément (9) ayant une élasticité de ressort est disposé, au moins en partie, au sein de l'élément (17) d'entretoisement.
  9. Parafoudre (1) suivant l'une des revendications 7 à 8,
    caractérisé
    en ce que le logement (21) du contact (3) de terre est sous la forme d'un embout annulaire de guidage de l'élément (17) d'entretoisement et/ou de l'élément (9) ayant une élasticité de ressort.
  10. Parafoudre (1) suivant l'une des revendications 2 à 5,
    caractérisé
    en ce que l'armature (5) d'extrémité du côté de la terre est formée par la couvercle (4) de l'enveloppe.
EP12170022.3A 2012-05-30 2012-05-30 Paratonnerre capsulé avec passage central Active EP2669903B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP12170022.3A EP2669903B1 (fr) 2012-05-30 2012-05-30 Paratonnerre capsulé avec passage central
JP2015514395A JP6113274B2 (ja) 2012-05-30 2013-04-25 センターブッシング付きのカプセル封止形サージアレスタ
CN201380028701.XA CN104350553B (zh) 2012-05-30 2013-04-25 具有中心套管的封装式过电压防护放电器
PCT/EP2013/058612 WO2013178411A1 (fr) 2012-05-30 2013-04-25 Limiteur de surtension enrobé à passage central
KR1020147033168A KR101674785B1 (ko) 2012-05-30 2013-04-25 중앙 피드스루를 갖는 캡슐형 서지 보호기

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12170022.3A EP2669903B1 (fr) 2012-05-30 2012-05-30 Paratonnerre capsulé avec passage central

Publications (2)

Publication Number Publication Date
EP2669903A1 EP2669903A1 (fr) 2013-12-04
EP2669903B1 true EP2669903B1 (fr) 2018-09-12

Family

ID=48326270

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12170022.3A Active EP2669903B1 (fr) 2012-05-30 2012-05-30 Paratonnerre capsulé avec passage central

Country Status (5)

Country Link
EP (1) EP2669903B1 (fr)
JP (1) JP6113274B2 (fr)
KR (1) KR101674785B1 (fr)
CN (1) CN104350553B (fr)
WO (1) WO2013178411A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT14491U1 (de) * 2014-02-20 2015-12-15 Wopfinger Baustoffindustrie Gmbh Revisionsmodul
DE102017203657A1 (de) * 2017-03-07 2018-09-13 Siemens Aktiengesellschaft Überspannungsableiter und Herstellungsverfahren für einen Überspannungsableiter
DE102017216024A1 (de) * 2017-09-12 2019-03-14 Siemens Aktiengesellschaft Überspannungsableiter
AT523645B1 (de) * 2020-04-06 2021-10-15 Avl List Gmbh Adapteranordnung und Bauteilverbund

Family Cites Families (12)

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Publication number Priority date Publication date Assignee Title
US4015228A (en) * 1974-06-10 1977-03-29 Matsushita Electric Industrial Co., Ltd. Surge absorber
DE3112477C2 (de) * 1981-03-26 1984-02-02 Siemens AG, 1000 Berlin und 8000 München Überspannungsableiter mit eine Säule von Ableiterelementen umschließenden Abschirmkörpern
JPH06260305A (ja) * 1993-03-08 1994-09-16 Fuji Electric Co Ltd 避雷器の電流端子引出し構造
JP2000504555A (ja) * 1996-01-31 2000-04-11 シーメンス アクチエンゲゼルシヤフト 金属容器閉鎖形開閉設備
DE10000617A1 (de) * 2000-01-10 2001-07-12 Abb Hochspannungstechnik Ag Ueberspannungsableiter
US20060152330A1 (en) * 2005-01-12 2006-07-13 Jong-Sung Kang PTC current limiting device having molding part made of insulating material
KR100697919B1 (ko) * 2005-01-12 2007-03-20 엘에스전선 주식회사 다중 절연체를 구비한 ｐｔｃ 한류기
KR100697917B1 (ko) * 2005-01-12 2007-03-20 엘에스전선 주식회사 Ｐｔｃ 한류기
JP4809379B2 (ja) * 2007-01-22 2011-11-09 昭和電線ケーブルシステム株式会社 アレスタおよびアレスタの取付部
WO2008090735A1 (fr) * 2007-01-22 2008-07-31 Swcc Showa Cable Systems Co., Ltd. Dispositif d'arrêt
JP2010004656A (ja) * 2008-06-20 2010-01-07 Mitsubishi Electric Corp 放圧板とそれを用いた放圧装置およびガス絶縁開閉装置
DE102011077394A1 (de) 2011-06-10 2012-12-13 Siemens Aktiengesellschaft Überspannungsableiter

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
CN104350553B (zh) 2017-09-29
KR101674785B1 (ko) 2016-11-09
CN104350553A (zh) 2015-02-11
WO2013178411A1 (fr) 2013-12-05
JP6113274B2 (ja) 2017-04-12
KR20150004407A (ko) 2015-01-12
JP2015524242A (ja) 2015-08-20
EP2669903A1 (fr) 2013-12-04

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