EP2885789A1 - Dispositif de protection contre les surtensions - Google Patents

Dispositif de protection contre les surtensions

Info

Publication number
EP2885789A1
EP2885789A1 EP13766914.9A EP13766914A EP2885789A1 EP 2885789 A1 EP2885789 A1 EP 2885789A1 EP 13766914 A EP13766914 A EP 13766914A EP 2885789 A1 EP2885789 A1 EP 2885789A1
Authority
EP
European Patent Office
Prior art keywords
contact
housing
surge arrester
voltage
central rod
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.)
Granted
Application number
EP13766914.9A
Other languages
German (de)
English (en)
Other versions
EP2885789C0 (fr
EP2885789B1 (fr
Inventor
Dirk Springborn
Gundolf Barenthin
Erhard Pippert
Markus Sulitze
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 Energy Global GmbH and Co KG
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
Publication of EP2885789A1 publication Critical patent/EP2885789A1/fr
Application granted granted Critical
Publication of EP2885789C0 publication Critical patent/EP2885789C0/fr
Publication of EP2885789B1 publication Critical patent/EP2885789B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/02—Details

Definitions

  • the invention relates to a surge arrester according to the preamble of patent claim 1.
  • Overvoltage arresters are protective systems, for example, for switchgear systems which, given overvoltages caused by lightning strikes or malfunctions of other subsystems, dissipate these overvoltages to ground and thus protect other components of the switchgear.
  • Such 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 diverting element is limited at both ends by end ⁇ fittings which make electrical contact to the switching ⁇ plant and to ground. To ensure a good electrical contact even under mechanical stress, 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 form a cage around them.
  • the housing is usually made of metal and is electrically grounded.
  • An end fitting of the Conductor column is grounded via a guided through the housing contact.
  • the other end fitting is electrically connected via a passage with a contact located on the outside of the housing, which serves to connect to the switchgear.
  • surge arresters which have a separation point, with which the surge arrester can be disconnected from the switchgear. To actuate this separation point, the housing must be opened, whereby
  • Sulfur hexafluoride can escape. Since sulfur hexafluoride is a harmful greenhouse gas, this is highly undesirable and thus detrimental.
  • a surge arrester in which the control hood can be moved against the diverting element and so a separation point can be opened or closed.
  • a disadvantage of the solutions of the prior art is that a complex mechanism is necessary that large masses must be moved and that the space requirement is high.
  • Object of the present invention is to provide a compact surge arrester, the one from the outside
  • the invention provides an overvoltage arrester with a fluid-tight housing.
  • the housing has a ground contact and a high voltage contact, wherein the ground contact and the high voltage contact each electrically connect the interior to the exterior of the housing.
  • a discharge element arranged in the housing has a delivery column clamped between two end armatures by means of tension elements.
  • a displaceable by means of a displacement device in an axial direction contact member outside the housing an electrical connection from the ground contact to the high voltage contact ⁇ over the diverting element is produced from relate hung example interrupted.
  • the contact element is guided in a bore of an end fitting. This makes the surge arrester very compact.
  • a mechanically simple but reliable construction is possible by the leadership of the contact element in the bore of the end fitting.
  • the contact element is resiliently connected to the displacement device in the axial direction.
  • a plurality, in particular three, diverting elements are each arranged with a contact element in the housing.
  • the housing for each Ableitele ⁇ ment each have a high voltage contact and the contact elements are jointly displaceable by means of the displacement device.
  • the shifting means depending on a discharge element connected to the contact element thrust Stan ⁇ ge.
  • the displacement device has a gas-tight guided from the interior of the housing to the outside and outside of the housing by an actuator movable central rod.
  • a coupling element with the central rod and the push rods is connected to transmit a movement of the actuator to the contact elements.
  • the central rod with the coupling element forms a threaded drive, which transmits a rotary movement of the central rod into a linear movement of the coupling element.
  • the central rod has an external thread, the coupling element a corresponding internal thread.
  • both threads are trapezoidal threads. This allows ⁇ be particularly simple set and compact drive for the movement of the contact elements.
  • FIG. 1 shows a surge arrester according to the invention in a sectional illustration with a closed separation point
  • FIG. 2 shows a surge arrester according to the invention in a sectional illustration with an opened separation point
  • FIG. 3 is a detail of the coupling element.
  • FIG. 4 shows a detailed representation of the separation point
  • FIGS 1 and 2 show a surge arrester 1 in a sectional view.
  • three discharge elements 5 are arranged here, which are provided for the protection of a three-phase gas-insulated switchgear.
  • DIE se dissipation elements 5 each have a cylindrical bleeder ⁇ column 12, a high-voltage side end fitting 7, a ground side end fitting 6 and a plurality of tension elements.
  • the Ableit yarn 12 is composed of individual, also cylindrical Varistorblöcken.
  • the end fittings 6, 7 are usually made of electrically conductive material.
  • the tension members 12 are pressed in the end fittings 6, 7 under train and so keep the Ableit yarn 12 together.
  • retaining discs 24 are inserted, which have holes through which the tension members 12 are guided and thus stabilize the discharge element 5 additionally.
  • the housing 2 is substantially cylindrical. Along the cylinder axis extends the longitudinal axis 50, which defines an axi ⁇ ale direction. The diverting element 5 is aligned along this longitudinal axis 50. At the two top surfaces, the housing 2 is closed fluid-tight.
  • the top surface of the housing 2 is closed with a simple housing cover 22.
  • a ground contact 3 is electrically insulated by this housing cover 22 from the inside to the outside of the housing 2 and serves the ground terminal. Inside the housing 2, this earth contact 3 is connected in an electrically conductive manner to the diverting element 5, for example, with a cable 13.
  • the earth-side end fitting 6 is fixed to the housing cover 22 and electrically insulated from the Ableitklale 12 by an insulating spacer 25.
  • the housing cover 22 generally has a connection, not shown here on, via the fluid, for example, sulfur hexafluoride, filled in the housing 2, or can be discharged.
  • the housing 2 may also have other facilities such as a maintenance opening 21.
  • the top surface of the housing 2 is provided with a high-voltage bushing 14 to lead the electrical high-voltage potential into the housing 2 from the outside without the risk of a flashover between the high voltage and the earthed housing 2.
  • the bushing 14 is designed here as a three-pole feedthrough 14, which leads three high voltage contacts 4, insulated against each other and against the housing, into the housing 2.
  • the high voltage contacts 4 the
  • Surge arrester 1 can be connected to a three-phase gas-insulated switchgear not shown here.
  • the high-voltage contacts 4 protrude into the housing 2 like a finger.
  • the distance between the high-voltage side end fitting 7 and respective high-voltage contact 4 forms a separation point 10.
  • This separation point 10 can be closed with a contact element 9 ge ⁇ .
  • This contact element 9 is designed as a pin or sleeve cylindrical, and can be moved in a bore 26 of the high-voltage side end fitting 7 in the axial direction. Bore 26 and contact element 9 are coordinated so that both a mechanical guide, as well as a good electrical connection between the contact element 9 and end fitting 7 is made. Alternatively you can
  • the coupling element 17 is disposed inside the housing 2.
  • Central rod 16 and coupling element 17 thereby form a threaded drive by the central rod 16 has an external thread and the coupling element 17 has a corresponding internal thread, for example a trapezoidal thread.
  • On the coupling element 17 a radially outwardly pointing arm 19 is arranged per discharge element 5, at the outer end of a connecting element 20 for receiving the push rods 15 is arranged ⁇ .
  • FIG. 3 shows such a coupling element.
  • the push rods 15 are fixed at one end in this connecting element 20 and connected to the other end with the contact element 9.
  • the connection of the push rod 15 with the contact element 9 is as shown in Figure 4 spring out of ⁇ out.
  • the push rod 15 is inserted into a bore 30 of the contact element 9.
  • An annular collar 33 forms a stop for a spring 32 shown here as a helical spring, which is adoptedfä ⁇ delt on the end of the push rod 15.
  • a shoulder at the transition of the bore 30 to a further bore 31 in diameter forms a further stop for the spring 32.
  • the bore 31 is closed at the end with a stopper 34, through which the push rod 15 is guided. The plug 34 prevents the push rod 15 can be pulled out of the bore 31 out.
  • the pull rod 16 rotates inside the housing 2 and transmits the rotary movement of the actuator 23 by means of the coupling element 17 on the push rods 15 and thus on the contact elements 9. Depending on the direction of movement while the separation point 10 is opened or closed.

Abstract

L'invention concerne un dispositif de protection contre les surtensions (1) pourvu d'un boîtier étanche (2). Le boîtier comporte un contact à la terre (3) et un contact haute tension (4), le contact à la terre (3) et le contact haute tension (4) connectant chacun électriquement l'intérieur du boîtier (2) avec son extérieur. Un élément de fuite (5) situé dans le boîtier (2) comporte une colonne de fuite retenue entre deux supports terminaux (6, 7) par des éléments de traction (11). Un élément de contact (9) pouvant être déplacé dans la direction axiale à l'aide d'un dispositif de coulissement (8) permet l'établissement ou l'interruption, depuis l'extérieur du boîtier (2), d'une connexion électrique entre le contact à la terre (3) et le contact haute tension (4) via l'élément de fuite (5). Selon l'invention, l'élément de contact (9) est introduit dans un trou (26) ménagé dans un support terminal (6, 7). Ledit dispositif de protection contre les surtensions (1) peut ainsi être conçu de manière très compacte. En outre, l'introduction de l'élément de contact (9) dans le trou (26) ménagé dans le support terminal (6, 7) permet d'obtenir une structure mécaniquement simple, mais cependant fiable.
EP13766914.9A 2012-09-25 2013-09-05 Parafoudre Active EP2885789B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012217310.2A DE102012217310A1 (de) 2012-09-25 2012-09-25 Überspannungsableiter
PCT/EP2013/068353 WO2014048691A1 (fr) 2012-09-25 2013-09-05 Dispositif de protection contre les surtensions

Publications (3)

Publication Number Publication Date
EP2885789A1 true EP2885789A1 (fr) 2015-06-24
EP2885789C0 EP2885789C0 (fr) 2024-03-20
EP2885789B1 EP2885789B1 (fr) 2024-03-20

Family

ID=49253257

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13766914.9A Active EP2885789B1 (fr) 2012-09-25 2013-09-05 Parafoudre

Country Status (6)

Country Link
EP (1) EP2885789B1 (fr)
JP (1) JP6025988B2 (fr)
KR (1) KR101733899B1 (fr)
CN (1) CN104641428B (fr)
DE (1) DE102012217310A1 (fr)
WO (1) WO2014048691A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK2854141T3 (da) 2013-09-30 2020-06-02 Siemens Ag Overspændingsafleder
EP3001430A1 (fr) 2014-09-29 2016-03-30 Siemens Aktiengesellschaft Dispositif paratonnerre
EP3043024A1 (fr) 2015-01-09 2016-07-13 Siemens Aktiengesellschaft Refroidissement de plate-forme d'aube et turbine à gaz correspondante
EP3048617B1 (fr) 2015-01-26 2020-08-12 Siemens Aktiengesellschaft Paratonnerre
EP3131098B1 (fr) * 2015-08-12 2018-02-28 Siemens Aktiengesellschaft Paratonnerre encapsule
CN105391027A (zh) * 2015-11-14 2016-03-09 彭伟成 一种变压器电压保护装置
DE102016202326A1 (de) 2016-02-16 2017-08-17 Siemens Aktiengesellschaft Antriebseinrichtung für einen Überspannungsableiter
DE102016202327A1 (de) * 2016-02-16 2017-08-17 Siemens Aktiengesellschaft Antriebsanordnung zur Ausbildung einer Trennstrecke für einen Überspannungsableiter
DE102016202329A1 (de) 2016-02-16 2017-08-17 Siemens Aktiengesellschaft Überspannungsableiteranordnung
DE102016203109A1 (de) 2016-02-26 2017-08-31 Siemens Aktiengesellschaft Überspannungsableiter mit Mitteln zum Messen transienter Überspannungen
DE102016205792A1 (de) 2016-04-07 2017-10-12 Siemens Aktiengesellschaft Elektrisches Steckerteil für eine Hochspannungs-Schaltstrecke und dessen Verwendung
DE102016206580A1 (de) * 2016-04-19 2017-11-02 Siemens Aktiengesellschaft Anordnung zum Überspannungsschutz einer mit einer Isolierflüssigkeit isolierten elektrischen Anlage
DE102016217496B4 (de) 2016-09-14 2020-10-08 Siemens Aktiengesellschaft Einschaltwiderstandsanordnung
CN112368789B (zh) * 2018-06-15 2022-07-29 西门子能源全球有限公司 具有压力卸减装置的过电压放电器

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5123637A (ja) * 1974-07-19 1976-02-25 Matsushita Electric Ind Co Ltd Hiraiki
US4015228A (en) * 1974-06-10 1977-03-29 Matsushita Electric Industrial Co., Ltd. Surge absorber
JPS5421943B2 (fr) * 1974-06-10 1979-08-03
JPS62278712A (ja) * 1986-05-26 1987-12-03 三菱電機株式会社 避雷器断路装置
JPH0492382A (ja) * 1990-08-08 1992-03-25 Toshiba Corp 避雷器
JPH10322822A (ja) 1997-05-16 1998-12-04 Toshiba Corp ガス絶縁開閉装置用避雷器
JP2009266834A (ja) * 2008-04-21 2009-11-12 Mitsubishi Electric Corp 送電用避雷装置の故障表示器および送電用避雷装置
EP2466596B1 (fr) * 2010-12-16 2013-08-28 ABB Research Ltd. Composant doté d'une protection contre les surtensions et leur procédé de contrôle
DE102011077394A1 (de) 2011-06-10 2012-12-13 Siemens Aktiengesellschaft Überspannungsableiter

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2014048691A1 *

Also Published As

Publication number Publication date
CN104641428A (zh) 2015-05-20
KR101733899B1 (ko) 2017-05-08
JP6025988B2 (ja) 2016-11-16
DE102012217310A1 (de) 2014-03-27
WO2014048691A1 (fr) 2014-04-03
EP2885789C0 (fr) 2024-03-20
CN104641428B (zh) 2017-06-30
KR20150048191A (ko) 2015-05-06
EP2885789B1 (fr) 2024-03-20
JP2015537369A (ja) 2015-12-24

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