EP2885789B1 - Parafoudre - Google Patents

Parafoudre Download PDF

Info

Publication number
EP2885789B1
EP2885789B1 EP13766914.9A EP13766914A EP2885789B1 EP 2885789 B1 EP2885789 B1 EP 2885789B1 EP 13766914 A EP13766914 A EP 13766914A EP 2885789 B1 EP2885789 B1 EP 2885789B1
Authority
EP
European Patent Office
Prior art keywords
contact
arrester
housing
voltage
elements
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
EP13766914.9A
Other languages
German (de)
English (en)
Other versions
EP2885789A1 (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 Energy Global GmbH and Co KG
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 Energy Global GmbH and Co KG filed Critical Siemens Energy Global GmbH and Co KG
Publication of EP2885789A1 publication Critical patent/EP2885789A1/fr
Application granted granted Critical
Publication of EP2885789B1 publication Critical patent/EP2885789B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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 claim 1.
  • Surge arresters are protection systems, for example for switchgear, which divert these overvoltages to ground when overvoltages occur due to lightning strikes or malfunctions of other subsystems and thus protect other components of the switchgear.
  • Such a surge arrester comprises one or more cylindrical arrester elements, which have a varistor column made up of individual varistor elements, which are also cylindrical.
  • Varistor elements are characterized by a voltage-dependent resistance. At low voltages these act as insulators. Above a certain threshold voltage, which depends on the material, they show good conductivity.
  • Varistor elements are often made from metal oxides such as zinc oxide.
  • the diverter element is limited at both ends by end fittings, which establish electrical contact with the switchgear and ground.
  • the varistor column In order to ensure good electrical contact even under mechanical stress, the varistor column must be held together under pressure. This can be done by clamping tension elements, for example ropes or rods, preferably made of glass fiber reinforced plastic, in the end fittings under tension. The tension elements surround the varistor column and thus form a cage around it.
  • surge arresters For use in gas-insulated switchgear, surge arresters have a fluid-tight housing that surrounds the arrester element.
  • the housing is filled with a fluid, usually sulfur hexafluoride, to increase the dielectric strength.
  • the housing is usually made of metal and is electrically grounded.
  • An end fitting of the discharge column is over grounded by a contact through the housing.
  • the other end fitting is electrically connected via a bushing to a contact on the outside of the housing, which is used for connection to the switchgear.
  • the surge arrester must be separated from the switchgear due to the high voltages that then occur. Otherwise the surge arrester would divert the voltage to ground and the measurement result would be distorted.
  • surge arresters are known that have a separation point, with which the surge arrester can be separated from the switchgear. To operate this separation point, the housing must be opened, which allows sulfur hexafluoride to escape. Since sulfur hexafluoride is a harmful greenhouse gas, this is highly undesirable and therefore detrimental.
  • a generic surge arrester is known in which the arrester column is separated from the switchgear by moving the arrangement of the arrester column and control hood together, thus establishing or interrupting an electrical connection. For actuation, a linear movement is carried out in a gas-tight manner through the housing wall.
  • US 4015228 A discloses a surge arrester including a metal oxide varistor, solder thermally connected thereto, and a conductive rod. When there is an overvoltage, the metal oxide varistor heats up the solder so that the solder melts. Melting the solder triggers movement of the conductive rod which interrupts an electrical current.
  • the publication EP2466596 A1 also deals with surge arresters.
  • the disadvantage of the solutions from the prior art is that complex mechanics are necessary, that large masses have to be moved and that the space requirement is high.
  • the object of the present invention is to provide a compact surge arrester which has a separation point that can be operated from the outside, with a simple mechanism with the smallest possible masses to be moved.
  • the invention provides a surge arrester with a fluid-tight housing.
  • the housing has a ground contact and a high-voltage contact, the ground contact and the high-voltage contact each electrically connecting the interior to the exterior of the housing.
  • a diverter element arranged in the housing has a diverter column clamped between two end fittings by means of tension elements.
  • An electrical connection from the ground contact to the high-voltage contact can be established or interrupted from outside the housing via a contact element that can be displaced in an axial direction by means of a displacement device.
  • the contact element is guided in a bore of an end fitting. This means that the surge arrester can be made very compact.
  • a mechanically simple but still reliable construction is possible.
  • the contact element is resiliently connected to the displacement device in the axial direction. In this way, length tolerances of the displacement device can be easily compensated for without complex adjustment devices.
  • diverting elements each with a contact element, are arranged in the housing.
  • the housing has a high-voltage contact for each diverting element and the contact elements can be moved together by means of the displacement device. This makes it easy to build a multi-pole, encapsulated surge arrester that has its own separation point for each pole, but the separation points can be operated together.
  • the displacement device has a push rod connected to the contact element for each diverting element.
  • the displacement device has a central rod which is guided from the inside of the housing in a gas-tight manner to the outside and can be moved outside the housing by an actuating device.
  • a coupling element is connected to the central rod and to the push rods. This makes it possible in a particularly simple manner to operate multiple separation points in a surge arrester together with a single actuating device from outside the housing.
  • the central rod preferably forms a threaded drive with the coupling element, which transmits a rotating movement of the central rod into a linear movement of the coupling element.
  • the central rod has an external thread and the coupling element has a corresponding internal thread. Both threads are preferably trapezoidal threads. This enables a particularly simple and compact drive for moving the contact elements.
  • the Figures 1 and 2 show a surge arrester 1 in a sectional view.
  • Three diverting elements 5 are arranged in a fluid-tight housing 2 and are intended to protect a three-phase gas-insulated switchgear. These diverter elements 5 each have a cylindrical diverter column 12, a high-voltage end fitting 7, an earth-side end fitting 6 and several tension elements 11.
  • the discharge column 12 is composed of individual, also cylindrical varistor blocks.
  • the end fittings 6, 7 usually consist of electrically conductive material.
  • the tension elements 12 are pressed into the end fittings 6, 7 under tension and thus hold the discharge column 12 together.
  • Retaining disks 24 are inserted into the diverter column 12, which have holes through which the tension elements 12 are guided and thus additionally stabilize the diverter element 5.
  • the housing 2 is essentially cylindrical.
  • the longitudinal axis 50 which defines an axial direction, extends along the cylinder axis.
  • the diverting element 5 is aligned along this longitudinal axis 50.
  • the housing 2 is sealed in a fluid-tight manner on the two cover surfaces.
  • the top surface of the housing 2 is closed with a simple housing cover 22.
  • a ground contact 3 is electrically insulated through this housing cover 22 from the inside to the outside of the housing 2 and serves as the ground connection. Inside the housing 2, this ground contact 3 is electrically conductively connected to the diverting element 5, for example with a cable 13.
  • the earth-side end fitting 6 is attached to the housing cover 22 and electrically insulated from the discharge column 12 by an insulating intermediate piece 25.
  • the housing cover 22 generally has a connection, not shown here, via which fluid, for example sulfur hexafluoride, can be filled into the housing 2 or drained away.
  • the housing 2 can also have further devices such as a maintenance opening 21.
  • the top surface of the housing 2 is provided with a high-voltage bushing 14 in order to lead the high-voltage electrical potential into the housing 2 from the outside without the risk of flashover between the high voltage and the grounded housing 2.
  • the bushing 14 is designed here as a three-pole bushing 14, which leads three high-voltage contacts 4 that are insulated from each other and against the housing into the housing 2.
  • the surge arrester 1 can be connected to a three-phase gas-insulated switchgear, not shown here, via the high-voltage contacts 4. Inside the housing 2, the high-voltage contacts 4 protrude into the housing 2 like fingers.
  • This separation point 10 can be closed with a contact element 9.
  • This contact element 9 is designed as a cylindrical pin or sleeve and can be moved in the axial direction in a bore 26 in the high-voltage side end fitting 7. Bore 26 and contact element 9 are coordinated with one another in such a way that both mechanical guidance, as well as a good electrical connection between contact element 9 and end fitting 7. Alternatively, sliding or sliding contacts can establish the electrical connection. If the contact element 9 is moved to the high-voltage contact 4, the separation point 10 is finally closed.
  • the contact element 9 is moved by means of a displacement device 8.
  • This has an actuating device 23, a central rod 16, a coupling element 17 and push rods 15.
  • the actuating device 23 located outside the housing 2 is connected to a central rod 16, which is guided into the housing 2 in a gas-tight manner.
  • the coupling element 17 is arranged on the central rod 16 inside the housing 2.
  • Central rod 16 and coupling element 17 form a thread drive in that 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, an arm 19 pointing radially outwards is arranged for each diverter element 5, at the outer end of which a connecting element 20 for receiving the push rods 15 is arranged.
  • Figure 3 shows such a coupling element.
  • the push rods 15 are fixed at one end in this connecting element 20 and are connected to the contact element 9 at the other end.
  • the connection of the push rod 15 to the contact element 9 is as in Figure 4 shown springy.
  • the push rod 15 is inserted into a bore 30 in the contact element 9.
  • An annular sleeve 33 forms a stop for a spring 32, shown here as a coil spring, which is threaded onto the end of the push rod 15 is.
  • a shoulder at the transition from the bore 30 to a bore 31 with a larger diameter forms a further stop for the spring 32.
  • the bore 31 is closed at the end with a plug 34 through which the push rod 15 is guided. The plug 34 prevents the push rod 15 from being pulled out of the hole 31.
  • the spring 32 is tensioned and generated between the sleeve 33 and the shoulder between the bores 30 and 31 a contact force of the contact element 9 on the high-voltage contact 4.
  • the pull rod 16 rotates inside the housing 2 and transmits the rotating movement of the actuating device 23 by means of the coupling element 17 to the push rods 15 and thus to the contact elements 9.
  • the separation point 10 is opened or closed.

Claims (4)

  1. Parafoudre (1) comprenant un boîtier (2), qui a un contact (3) de terre et un contact (4) de haute tension, dans lequel le contact (3) de terre et le contact (4) de haute tension respectivement connectent électriquement l'intérieur avec l'extérieur du boîtier (2), et comprenant un élément (5) de dérivation disposé dans le boîtier (2) et ayant une colonne (12) de dérivation encastrée entre deux armatures (6, 7) d'extrémité, dans lequel, par un élément (9) de contact pouvant coulisser dans une direction axiale au moyen d'un dispositif (8) de coulissement, une liaison électrique du contact (3) de terre au contact (4) de haute tension peut être interrompue par l'élément (5) de dérivation, dans lequel le boîtier (2) est constitué d'une manière étanche au fluide, et est rempli d'un fluide pour augmenter la rigidité diélectrique et, par l'élément (9) de contact coulissant dans la direction axiale au moyen du dispositif (8) de coulissement, la liaison électrique du contact (3) de terre au contact (4) de haute tension peut être produite par l'élément (5) de dérivation, afin de fermer un point (10) de contact entre le contact (3) de terre et le contact (4) de haute tension, et
    il est monté dans le boîtier (2) plusieurs tels éléments (5) de dérivation ayant chacun un élément (9) de contact, qui a pour chaque élément (5) de dérivation respectivement un contact (4) de haute tension, dans lequel les éléments (9) de contact peuvent coulisser conjointement au moyen du dispositif (8) de coulissement, dans lequel chacun des éléments (5) de dérivation a respectivement une colonne (12) cylindrique de dérivation, une armature (6) d'extrémité conductrice de l'électricité du côté de la haute tension et une armature (7) d'extrémité conductrice de l'électricité du côté de la terre, dans lequel les colonnes (12) de dérivation sont encastrées respectivement au moyen de tirants (11) entre les armatures (6, 7) d'extrémité, caractérisé en ce que respectivement l'un des éléments (9) de contact est guidé dans un trou (26) de l'armature (7) d'extrémité respective du côté de la haute tension.
  2. Parafoudre (1) suivant la revendication 1,
    caractérisé
    en ce que respectivement l'élément (9) de contact est guidé élastiquement dans la direction axiale par le dispositif (8) de coulissement.
  3. Parafoudre (1) suivant la revendication 1 ou 2,
    caractérisé
    en ce que le dispositif (8) de coulissement a pour chaque élément (5) de dérivation une barre (15) de poussée reliée à l'élément (9) de contact et une barre (16) centrale guidée d'une manière étanche au gaz de l'intérieur du boîtier (2) vers l'extérieur et pouvant être déplacée à l'extérieur du boîtier (2) par un dispositif (23) d'actionnement, dans lequel pour la transmission d'un déplacement du dispositif (23) d'actionnement aux éléments (9) de contact, un élément (17) d'accouplement est relié à la barre (16) centrale et aux barres (15) de poussée.
  4. Parafoudre (1) suivant la revendication 3,
    caractérisé
    en ce que la barre (16) centrale forme avec l'élément (17) d'accouplement un entraînement fileté, qui transforme un mouvement de rotation de la barre (16) centrale en un mouvement linéaire de l'élément (17) d'accouplement.
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 (2)

Publication Number Publication Date
EP2885789A1 EP2885789A1 (fr) 2015-06-24
EP2885789B1 true 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
PL2854141T3 (pl) 2013-09-30 2020-08-24 Siemens Aktiengesellschaft Ochronnik przepięciowy
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
DE102016202329A1 (de) 2016-02-16 2017-08-17 Siemens Aktiengesellschaft Überspannungsableiteranordnung
DE102016202327A1 (de) 2016-02-16 2017-08-17 Siemens Aktiengesellschaft Antriebsanordnung zur Ausbildung einer Trennstrecke für einen Überspannungsableiter
DE102016202326A1 (de) 2016-02-16 2017-08-17 Siemens Aktiengesellschaft Antriebseinrichtung für einen Überspannungsableiter
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
KR102438378B1 (ko) * 2018-06-15 2022-08-31 지멘스 에너지 글로벌 게엠베하 운트 코. 카게 방압 장치를 구비한 서지 피뢰기

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015228A (en) * 1974-06-10 1977-03-29 Matsushita Electric Industrial Co., Ltd. Surge absorber
JPS5123637A (ja) * 1974-07-19 1976-02-25 Matsushita Electric Ind Co Ltd Hiraiki
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

Also Published As

Publication number Publication date
JP6025988B2 (ja) 2016-11-16
CN104641428B (zh) 2017-06-30
WO2014048691A1 (fr) 2014-04-03
CN104641428A (zh) 2015-05-20
JP2015537369A (ja) 2015-12-24
KR101733899B1 (ko) 2017-05-08
EP2885789A1 (fr) 2015-06-24
KR20150048191A (ko) 2015-05-06
DE102012217310A1 (de) 2014-03-27

Similar Documents

Publication Publication Date Title
EP2885789B1 (fr) Parafoudre
EP2702597B1 (fr) Coupe-circuit de surtension
EP2466596B1 (fr) Composant doté d'une protection contre les surtensions et leur procédé de contrôle
EP2766914B1 (fr) Contacteur
EP0874430A2 (fr) Eclateur
DE102007004950B4 (de) Elektrische Schaltanlage
EP2854141B1 (fr) Paratonnerre
EP1675142B1 (fr) Système de contact pour un appareil de commutation électrique
EP3001430A1 (fr) Dispositif paratonnerre
WO2013178411A1 (fr) Limiteur de surtension enrobé à passage central
WO2014048711A1 (fr) Dispositif de protection contre les surtensions
EP2846333A1 (fr) Paratonnerre isolé du gaz
EP3048617B1 (fr) Paratonnerre
EP2927923A1 (fr) Interrupteur de charge de transformateur à sec
WO2018054615A1 (fr) Ensemble manchon de câble interruptible
DE3606076A1 (de) Spannungsbegrenzender widerstand, insbesondere fuer einen trennschalter einer freiluft-hochspannungsschaltanlage
EP2979278B1 (fr) Parafoudre encapsulé
DE102016207292B4 (de) Elektrische Schutzvorrichtung und Transformator mit einer solchen
EP3659223A1 (fr) Système comprenant un dispositif de commutation à isolation gazeuse
DE2619317C2 (de) Blitzschutzvorrichtung
EP3417467B1 (fr) Dispositif de protection contre les surtensions d'une installation électrique isolee avec un fluide isolant
EP1851781B1 (fr) Systeme de securite pour installation de distribution, notamment pour installation de distribution moyenne tension
WO2016034438A1 (fr) Système de circuit pour un transformateur de réglage, notamment présélecteur
DE102011078483A1 (de) Elektrisches Schaltgerät
DE1790290A1 (de) Steckbare, zweiteilige anschlussvorrichtung fuer hochspannungskabel

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20150316

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SIEMENS AKTIENGESELLSCHAFT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20180816

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SIEMENS ENERGY GLOBAL GMBH & CO. KG

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20231109

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502013016507

Country of ref document: DE