EP2702597A1 - Coupe-circuit de surtension - Google Patents

Coupe-circuit de surtension

Info

Publication number
EP2702597A1
EP2702597A1 EP12729020.3A EP12729020A EP2702597A1 EP 2702597 A1 EP2702597 A1 EP 2702597A1 EP 12729020 A EP12729020 A EP 12729020A EP 2702597 A1 EP2702597 A1 EP 2702597A1
Authority
EP
European Patent Office
Prior art keywords
housing
surge arrester
control hood
contacts
control
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
EP12729020.3A
Other languages
German (de)
English (en)
Other versions
EP2702597B1 (fr
Inventor
Dirk Springborn
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
Publication of EP2702597A1 publication Critical patent/EP2702597A1/fr
Application granted granted Critical
Publication of EP2702597B1 publication Critical patent/EP2702597B1/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
    • 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
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
    • H01H2003/405—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing using a walking nut
    • 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
    • H01T1/00—Details of spark gaps
    • H01T1/16—Series resistor structurally associated with spark gap
    • 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
    • H01T21/00—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
    • H01T21/06—Adjustment of spark gaps
    • 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
    • H01T4/04—Housings

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, which occur in the event of overvoltages
  • Such a surge arrester comprises one or more cylindrical diverting elements, which have a varistor column constructed from 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, the anläge the electrical contact to the switch and make the mass.
  • 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 surrounding it, the varistor and thus form a cage ⁇ fig about this.
  • a fluid-tight housing surrounding the guide element from ⁇ For use in gas-insulated switchgear have exceeded on arresters a fluid-tight housing surrounding the guide element from ⁇ .
  • 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 delivery column is grounded via a contact made through the housing.
  • 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.
  • larger surge arresters often have at their high-voltage end a control hood, which is slipped over the end of the Ableit yarn as a closed-end cylinder.
  • the individual varistor elements have a high capacitance with respect to ground potential, but their series connection leads to a very small longitudinal capacitance, which leads to an inhomogeneous voltage distribution as of a certain length of the varistor column.
  • the varistor elements are, therefore, claimed in voltage terms higher, which may lead to undesired heating together with ih ⁇ rer resistive effect.
  • the control hood now serves theistsver ⁇ distribution to homogenisation ⁇ ren along the length of the varistor column.
  • surge arresters which have a separation point, with which the surge arrester can be disconnected from the switchgear.
  • the invention provides an overvoltage arrester, with a diverting element, a control hood electrically connected to the diverting element and a fluid-tight housing in which the diverting element and the control hood are arranged and which has two contacts electrically connecting the interior to the exterior of the Ge ⁇ housing , It is provided here that the diverter element and the control cover to each other are designed to be movable rela tive ⁇ , wherein an electrical connection from one of the contacts on the diverter element on the other of the contacts is adjustable forth ⁇ or interrupted by the re ⁇ lativterrorism.
  • control hood and conveying element can be moved together as in under ⁇ Kunststoffliche directions.
  • control hood can sit firmly and only the diverting be moved.
  • the moving mass is lower than in the prior art, so that the mechanical elements required for the movement can be made structurally simpler.
  • the discharge element is arranged along a longitudinal axis of the housing and the control hood in Slidably disposed in the direction of this longitudinal axis. This results in a particularly compact arrangement.
  • the displacement ⁇ ability of the control hood along the longitudinal axis allows for the best possible space utilization and compliance with the required isolation distances producing and closing an electrical connection to the switchgear.
  • control hood in a further advantageous embodiment, provision is made for the control hood to be displaceable by means of a displacement device which can be actuated from outside the fluid-tight housing.
  • the inventive surge ⁇ Vietnamese surge ⁇ Vietnamese ballast ⁇ Vietnamese ballast ⁇ раsabieiter thereby be configured such that the postponement device can be actuated by rotary movement of shaft means connected to the control hood push rod and a rotational motion of the shaft into a Translationsbewe ⁇ supply of the push rod comprises transmitting gear.
  • a displacement device can be built very compact and allows easy operation. The rotating motion of the loading ⁇ conducted into the housing shaft can easily be sealed by the relevant measures.
  • the surge arrester of invention according to the push rod consists of at ⁇ least partially of electrically insulating material.
  • This can be for example a glass fiber reinforced plastic. This advantageously provides the insulation resistance leis ⁇ tet because voltage arcing between the push rod and housing are avoided.
  • a further embodiment of the surge arrester according to the invention provides that the shaft is fluid-tight from the Inner is guided to the outside of the housing.
  • the leakage of fluid from the housing is advantageously verhin ⁇ changed. Harmful environmental influences by the fluid are thus avoided.
  • this ensures the dielectric strength and the surge arrester thus requires little maintenance.
  • an advantageous embodiment of the invention provides that one end of the discharge element with one of the contacts and the other end of the discharge element are electrically connected to the control hood and that by the displacement of the control hood, the electrical connection to the other of the contacts can be produced or interrupted. This allows to make and break the connection only to move the control hood. This is relative to the diverter relatively easy. A movement of the control hood therefore requires less mechanical effort.
  • the tax erhaube and engage the other of the contacts when produced elekt ⁇ -driven in such a form-fitting connection that they are fixed radially relative to the longitudinal axis.
  • ⁇ by causes the control hood and contact centered at the contact closure against each other and can not tilt.
  • This can lead to the largest possible contact area between the control hood and contact. This ensures a secure connection of the control hood to the high voltage potential of the contact.
  • control hood is connected for displacement along the longitudinal axis over Gleitla ⁇ ger with the discharge element.
  • the plain bearings are preferably attached laterally to end electrodes and guide and fix the control hood in the radial direction with respect to the longitudinal axis.
  • the control cover is also ⁇ xed fi radially about the contact.
  • the earth-side end of the diverting element is included
  • divert and control hood are fixed to each other with respect to the Ge ⁇ housing and so insensitive to shocks, for example, during transport or earthquake.
  • FIG. 1 shows a surge arrester with an interrupted electrical connection in a sectional illustration
  • FIG. 3 shows a detail of FIG. 2 in a perspective sectional view
  • FIGS 1 and 2 show a surge arrester 1 in a sectional view.
  • a discharge element 20 is arranged in a fluid-tight housing 2.
  • This discharge element 20 has a cylindrical varistor column 25, an upper end fitting 22, a lower end fitting 21 and a plurality of tension elements 23.
  • the varistor column 25 is composed of individual, also cylindrical Varistorblöcken. At the two ends of the varistor column 25 sit end fittings 21 and 22, of which in Figs. 1 and 2, only the lower end fitting 21 is visible.
  • the end fittings 21, 22 are usually made of electrically conductive material. Tension elements 23 are pressed in the end fittings 21, 22 under train and so keep the varistor column 25 together ⁇ men. In the varistor column 25 retaining disks 24 are inserted, which have holes through which the tension elements 23 are guided and thus stabilize the discharge element 20 additionally.
  • the housing 2 is substantially cylindrical. Along the cylinder axis, the longitudinal axis 50 extends. The Ableit ⁇ element 20 is aligned along this longitudinal axis 50. At the two cover surfaces, the housing 2 is closed in a fluid-tight manner.
  • the top surface of the housing 2 is closed with a simple housing cover 4.
  • a contact 8 is electrically isolated through this housing cover 4 from the inside to the outside of the housing 2 and serves the ground terminal.
  • this contact 8 is electrically connected to the Ableit ⁇ element 20, for example, with a cable 15.
  • the connection is made here via a conductive connection plate 13.
  • Between this and the lower end fitting 21 is still an insulating spacer 14.
  • the connection of the cable ⁇ could 15 alternatively be made directly to the lower Endarma ⁇ tur 21, the insulating spacer 14 is omitted then.
  • the end fitting 21 of the discharge element 20 is fastened to the housing cover 4.
  • the housing cover 4 is electrically insulated against the varistor column 25.
  • the insulation takes place here through the intermediate piece 14.
  • an insulating layer between the lower end fitting 21 and the housing cover 4 are inserted.
  • the housing cover 4 has a connection, not illustrated here, via which fluid, for example sulfur hexafluoride, can be introduced into the housing 2 or drained off.
  • the top surface of the housing 2 is provided with a high-voltage ⁇ passage 5, to guide the electrical Hochschreibspo ⁇ tential without the risk of flashover between high voltage and earthed housing 2 from the outside into the housing 2 into it.
  • the implementation 5 comprises a retaining ring 12, an insulator 6 and a contact 7, which is designed here as a plug contact.
  • the Studentswoodsab ⁇ ieiter 1 can be connected to a not shown gas-insulated switchgear ⁇ system via the contact seventh Inside the housing 2 is the contact 7 is provided with an electrically conductive fitting 9.
  • the implementation is provided with sealing rings (10).
  • a substantially cylindrical, closed at one end ⁇ control cam 40 is slipped over the high voltage end of the discharge element 20.
  • the control hood 20 is connected to a displacement device 30 which has a
  • Push rod 33 a transmission 32, which may be embodied, for example, as a Trapezgewindegetriebe, a fluid-tight guided through the housing cover 4 shaft 31, and an out ⁇ half of the housing 2 with this shaft 31 connected control ⁇ element 34 has.
  • a display device 35 can be attached to the operating element 34, which indicates whether the electrical connection is established or interrupted.
  • the shaft 31 can be placed in a rotating movement.
  • this motion is converted Rotationsbe- 33 in Rich ⁇ tung the longitudinal axis 50 into a linear movement of the push rod.
  • the push rod 33 in turn transmits this linear movement to the control hood 40.
  • the control hood 40 can thus be moved in the direction of the longitudinal axis 50 toward the contact 7 and away from the ⁇ sem, and so an electrical connection can be made or interrupted.
  • the electrical connection is interrupted ⁇ chen.
  • Fig. 3 shows a section of the high-voltage side end of the surge absorber 1 in a Schittdargna.
  • the electrical connection is made here.
  • the control hood 40 abuts the fitting 9 of the contact 7.
  • Control hood 40 and fitting 9 are shaped so that a bulge of the fitting 9 engages in a corresponding indentation of the closed end of the control hood 40.
  • the control hood 40 is thus fixed in the radial direction with respect to the longitudinal axis 50.
  • the end fitting 22 has plain bearings 41 which fix the control housing 40 radially with respect to the longitudinal axis 50 and thus guide the control hood 40 upon a displacement in the direction of the longitudinal axis 50.
  • the plain bearings 41 may be electrically conductive and thus simultaneously serve the electrical Ver ⁇ binding of the control hood 40 with the end fitting 22, but they can also be made of a non-conductive material, such as a plastic.
  • the electrical connection of the end fitting 22 with the control cover 40 can then take place ⁇ example via a flexible conductor strip.

Landscapes

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

Abstract

L'invention concerne un coupe-circuit de surtension (1) comprenant un élément de dérivation (20), un capot de commande (40) relié électriquement à l'élément de dérivation (20) et un boîtier étanche aux fluides dans lequel l'élément de dérivation (20) et le capot de commande (40) sont disposés et qui présente deux contacts (7, 8), chacun d'eux reliant électriquement l'intérieur à l'extérieur du boîtier (2). Un coupe-circuit de surtension qui permet un établissement ou encore une interruption conceptuellement plus simple de la liaison électrique est produit du fait que l'élément de dérivation (20) et le capot de commande (40) sont conçus mobiles l'un par rapport à l'autre et que le mouvement relatif permet d'établir ou encore d'interrompre une liaison électrique d'un des contacts (7,8) avec l'autre contact (8, 7) par l'intermédiaire de l'élément de dérivation (20).
EP12729020.3A 2011-06-10 2012-05-29 Coupe-circuit de surtension Active EP2702597B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011077394A DE102011077394A1 (de) 2011-06-10 2011-06-10 Überspannungsableiter
PCT/EP2012/059973 WO2012168112A1 (fr) 2011-06-10 2012-05-29 Coupe-circuit de surtension

Publications (2)

Publication Number Publication Date
EP2702597A1 true EP2702597A1 (fr) 2014-03-05
EP2702597B1 EP2702597B1 (fr) 2015-03-18

Family

ID=46331229

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12729020.3A Active EP2702597B1 (fr) 2011-06-10 2012-05-29 Coupe-circuit de surtension

Country Status (6)

Country Link
EP (1) EP2702597B1 (fr)
JP (1) JP5702022B2 (fr)
KR (1) KR101476580B1 (fr)
CN (1) CN103608874A (fr)
DE (1) DE102011077394A1 (fr)
WO (1) WO2012168112A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2669903B1 (fr) 2012-05-30 2018-09-12 Siemens Aktiengesellschaft Paratonnerre capsulé avec passage central
DE102012217310A1 (de) 2012-09-25 2014-03-27 Siemens Aktiengesellschaft Überspannungsableiter
DE102012217503A1 (de) 2012-09-27 2014-03-27 Zf Friedrichshafen Ag Getriebe für ein Kraftfahrzeug
EP2976773A1 (fr) 2013-04-26 2016-01-27 Siemens Aktiengesellschaft Parafoudre encapsulé
EP2846333A1 (fr) 2013-09-09 2015-03-11 Siemens Aktiengesellschaft Paratonnerre isolé du gaz
PL2854141T3 (pl) 2013-09-30 2020-08-24 Siemens Aktiengesellschaft Ochronnik przepięciowy
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
DE102016202329A1 (de) * 2016-02-16 2017-08-17 Siemens Aktiengesellschaft Überspannungsableiteranordnung
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
DE102016206580A1 (de) * 2016-04-19 2017-11-02 Siemens Aktiengesellschaft Anordnung zum Überspannungsschutz einer mit einer Isolierflüssigkeit isolierten elektrischen Anlage
JP6595428B2 (ja) * 2016-09-16 2019-10-23 株式会社東芝 避雷器
DE102018215754A1 (de) * 2018-09-17 2020-03-19 Siemens Aktiengesellschaft Überspannungsableiter und Verfahren zum Wechseln einer Antriebsanordnung eines Überspannungsableiters

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JPS6126287U (ja) * 1984-07-23 1986-02-17 株式会社東芝 避雷器
JPS62278712A (ja) * 1986-05-26 1987-12-03 三菱電機株式会社 避雷器断路装置
JPH0186416U (fr) * 1987-11-25 1989-06-08
JPH08265925A (ja) * 1995-03-23 1996-10-11 Meidensha Corp ガス絶縁開閉装置
JPH09284927A (ja) * 1996-04-09 1997-10-31 Nissin Electric Co Ltd 避雷器を備えたガス絶縁電気機器
KR19980011799U (ko) * 1996-08-22 1998-05-25 황인기 과전압방지용 안전차단기
JPH10322822A (ja) 1997-05-16 1998-12-04 Toshiba Corp ガス絶縁開閉装置用避雷器
JP2001267108A (ja) * 2000-03-22 2001-09-28 Nissin Electric Co Ltd ガス絶縁開閉装置用避雷器
EP1603140A1 (fr) * 2004-06-04 2005-12-07 ABB Technology AG Composant actif pour limiteur de surtension encapsulé
DE102008034890A1 (de) * 2008-07-24 2010-02-04 Siemens Aktiengesellschaft Überspannungsableiteranordnung mit einem mehrere Ableitersäulen aufweisenden Ableitstrompfad

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Title
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Also Published As

Publication number Publication date
KR101476580B1 (ko) 2014-12-24
KR20140012164A (ko) 2014-01-29
DE102011077394A1 (de) 2012-12-13
JP2014523639A (ja) 2014-09-11
EP2702597B1 (fr) 2015-03-18
JP5702022B2 (ja) 2015-04-15
CN103608874A (zh) 2014-02-26
WO2012168112A1 (fr) 2012-12-13

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