EP2690633A1 - Paratonnerre avec éléments de traction maintenus par des boucles - Google Patents

Paratonnerre avec éléments de traction maintenus par des boucles Download PDF

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Publication number
EP2690633A1
EP2690633A1 EP12177997.9A EP12177997A EP2690633A1 EP 2690633 A1 EP2690633 A1 EP 2690633A1 EP 12177997 A EP12177997 A EP 12177997A EP 2690633 A1 EP2690633 A1 EP 2690633A1
Authority
EP
European Patent Office
Prior art keywords
loops
surge arrester
elements
tension elements
guide grooves
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.)
Withdrawn
Application number
EP12177997.9A
Other languages
German (de)
English (en)
Inventor
Dirk Springborn
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 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 EP12177997.9A priority Critical patent/EP2690633A1/fr
Priority to CN201380045680.2A priority patent/CN104584145A/zh
Priority to PCT/EP2013/062138 priority patent/WO2014016042A1/fr
Priority to US14/417,210 priority patent/US9728308B2/en
Publication of EP2690633A1 publication Critical patent/EP2690633A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • H01C7/18—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 comprising a plurality of layers stacked between terminals

Definitions

  • the invention relates to a surge arrester with traction elements held by loops according to the preamble of patent claim 1.
  • Surge arresters are protection systems for power supply systems that dissipate overvoltages that occur when lightning strikes occur due to lightning strikes or malfunctions of other subsystems, thereby protecting other components of the power supply system.
  • Such a surge arrester consists of a cylindrical Ableit yarn, which is usually formed as a stack of individual also 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 discharge column is delimited at both ends by end fittings which make electrical contact with the power supply system and ground.
  • the varistor elements 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 Ableit yarn and thus form a cage around this.
  • surge arresters are often surrounded by a housing made of an insulating material such as silicone. The manufacture of this housing can be done by casting or spraying.
  • the varistor elements can expand explosively.
  • the cage formed from the tension elements should still hold together the Ableit yarn and prevent fragments of the varistor elements are ejected.
  • a problem with such surge arresters is to prevent the tensile elements from being destroyed in such a fault by the explosion energy occurring, or that the cage formed from them is deformed so that fragments of the varistor elements can escape.
  • the cage is held together by pulling elements of metal support plates inserted into the varistor column.
  • the support plates have a larger diameter than the varistor column and have in the protruding from the varistor column part holes through which the tension elements are passed.
  • the protruding metallic parts of the support plates can lead to flashovers and the tension elements can easily shearing at occurring radial forces at the edges of the holes through which they are passed.
  • the EP 0 683 496 A1 shows a surge arrester, in which the tension elements are wrapped by a guided around the outside of the delivery column bandage. However, the tension elements can be spread apart in the event of a fault. If such a bandage is destroyed, the tension elements are no longer held together at least at this point.
  • the tension members are comprised of a sleeve having radial protuberances for the tension members. If such a cuff is inflated or destroyed in the event of a fault, the cage formed by the tension elements loses its cohesion at this point.
  • the object of the present invention is to provide a surge arrester whose cage has an improved cohesion in the event of a fault.
  • a surge arrester having a plurality of tension elements clamping a column of varistor elements in the axial direction, and one or more loop arrangements, wherein each loop arrangement radially wraps around the tension elements.
  • a loop arrangement has a plurality of loops, wherein the loops each loop around only a part of the tension elements.
  • a loop arrangement could consist of two loops, each of which wraps around two tension elements of a cage consisting of four tension elements.
  • a loop that is wrapped around the Ableit yarn wrap around every second tension element outside and pass the intermediate tension elements inside, so run along between tension element and Ableit yarn.
  • loop would then loop around the latter half of the tension elements outside and pass through the outside of the first loop looped inside. If one of the loops should be destroyed, the still intact loops continue to hold at least part of the cage together.
  • loop arrangements can be applied only once, for example in the middle of the delivery column, or several of these sling arrangements can be distributed over the axial height of the surge arrester.
  • a guide element is inserted into the delivery column at the axial height of a loop arrangement.
  • the guide element has guide grooves, in which the loops are guided in direct connection between the tension elements which are looped around by them. Since the slings run in the direction of maximum forces in the event of a fault, they can absorb the highest possible tensile load.
  • the tension elements are not fixed only in the radial direction, but also in tangential, ie perpendicular to the axial and radial directions. Because the loops run radially through the delivery column, a plurality of loops can be arranged without crossing in a radial plane.
  • the surge arrester has an even number of tension elements and the loops of the loop arrangement each wrap around two opposing tension elements. This arrangement ensures a particularly high number of loops and thus safety in the event of a fault, since only two tension elements are affected when a sling is destroyed. The cage from the remaining tension elements is still held together by the still intact slings.
  • the guide element has guide grooves in an upper and a lower cover surface.
  • the guide grooves of a cover surface are perpendicular to those of the other top surface.
  • loops can be arranged crosswise in a guide element in order to absorb forces of all possible directions.
  • the loops are made of a glass fiber reinforced plastic. Such loops are particularly tensile.
  • the guide element is made of an electrically conductive material, in particular of a metal.
  • the guide element simultaneously serves as electrical connection between the varistor elements.
  • a surge arrester 1 according to the prior art is in FIG. 1 shown. It consists of a cylindrical Ablesit yarn, which is usually formed as a stack of individual cylindrical varistor elements 2.
  • the longitudinal axis 18 of the delivery column defines an axial direction, directions perpendicular to this longitudinal axis 18 are radial directions.
  • the Ableit yarn is limited at both ends by end fittings 10, which make electrical contact with the power supply system and the ground, for example by means of a connecting bolt 13.
  • the varistor elements 2 In order to ensure good electrical contact even under mechanical load, the varistor elements 2 must be held together under pressure. This can be done by tension members 3, for example, cables or rods are preferably clamped in glass fiber reinforced plastic in the end fittings 10 under train. The tension elements 3 surround the Ableit yarn and thus form a cage around this. For protection against environmental influences such surge arresters are surrounded by a housing 11 made of an insulating material such as silicone. The production of this housing 11 can be done by casting or spraying. On the housing 11 also umbrellas 12 may be provided to extend the creepage path.
  • tension members 3 for example, cables or rods are preferably clamped in glass fiber reinforced plastic in the end fittings 10 under train.
  • the tension elements 3 surround the Ableit yarn and thus form a cage around this.
  • surge arresters are surrounded by a housing 11 made of an insulating material such as silicone.
  • the production of this housing 11 can be done by casting or spraying.
  • umbrellas 12 may be provided to extend the creepage path.
  • FIGS. 2 and 3 show a part of a surge arrester according to the invention, which is a development of the known Surge arrester 1 off FIG. 1 is and also identifies its individual parts.
  • a rejection column of which only two varistor elements 2 are shown here, extends along the longitudinal axis 18.
  • the diverter column is surrounded by a cage comprising eight tension elements 3 a to 3 h, which are configured identically and differ only in their radial position. As far as the different position is irrelevant, the reference numeral 3 is used for all tension elements.
  • the guide element 6 is inserted. This is designed as a flat cylinder.
  • the upper cover surface 20 and the lower cover surface 21 each have four parallel guide grooves 7.
  • the guide grooves 7 in the upper cover surface 20 and the lower cover surface 21 are perpendicular to each other.
  • the thickness of the guide element 6 and the depth of the guide grooves 7 are coordinated so that the guide grooves 7 do not intersect in a plane.
  • a loop arrangement 4 holds the cage together from tension elements 3.
  • the loop arrangement 4 consists of four individual loops 5a to 5d, which differ from each other only in their position. Insofar as the position is irrelevant, the reference numeral 5 is also used for all loops.
  • Each loop 5 wraps around two tension elements 3, which lie opposite one another with respect to a plane of symmetry having the longitudinal axis 18, indicated by the line 22 or 23.
  • the loop 5a wraps around the tension elements 3a and 3d, which lie opposite one another with respect to the imaginary line 22.
  • a second loop 5b running parallel to this loop 5a wraps around the tension elements 3h and 3e.
  • the loops 5a and 5b lie in the same radial plane.
  • loop arrangement 4 shown can also be arranged at several points along the longitudinal axis 18 of the surge arrester 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)
EP12177997.9A 2012-07-26 2012-07-26 Paratonnerre avec éléments de traction maintenus par des boucles Withdrawn EP2690633A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP12177997.9A EP2690633A1 (fr) 2012-07-26 2012-07-26 Paratonnerre avec éléments de traction maintenus par des boucles
CN201380045680.2A CN104584145A (zh) 2012-07-26 2013-06-12 用套环固定拉力元件的过电压避雷器
PCT/EP2013/062138 WO2014016042A1 (fr) 2012-07-26 2013-06-12 Coupe-circuit de surtension pourvu d'éléments de traction retenus par des boucles
US14/417,210 US9728308B2 (en) 2012-07-26 2013-06-12 Surge arrester comprising traction elements maintained by loops

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12177997.9A EP2690633A1 (fr) 2012-07-26 2012-07-26 Paratonnerre avec éléments de traction maintenus par des boucles

Publications (1)

Publication Number Publication Date
EP2690633A1 true EP2690633A1 (fr) 2014-01-29

Family

ID=46845592

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12177997.9A Withdrawn EP2690633A1 (fr) 2012-07-26 2012-07-26 Paratonnerre avec éléments de traction maintenus par des boucles

Country Status (4)

Country Link
US (1) US9728308B2 (fr)
EP (1) EP2690633A1 (fr)
CN (1) CN104584145A (fr)
WO (1) WO2014016042A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6132922B2 (ja) * 2013-09-18 2017-05-24 本田技研工業株式会社 整列方法および整列装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0397163A1 (fr) * 1989-05-12 1990-11-14 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Enveloppe étanche à base d'enroulement filamentaire, et parafoudre composite en faisant application
EP0683496A1 (fr) 1994-05-13 1995-11-22 Asea Brown Boveri Ab Parafoudre
US5936826A (en) * 1998-03-25 1999-08-10 Asea Brown Boveri Ag Surge arrester
WO2009050011A1 (fr) 2007-10-12 2009-04-23 Tridelta Überspannungsableiter Gmbh Dispositif de protection contre les surtensions
DE102008057232A1 (de) * 2008-11-11 2010-05-12 Siemens Aktiengesellschaft Überspannungsableiter mit einem Varistorelement und Verfahren zur Herstellung eines Überspannungsableiters
DE102010043655A1 (de) 2010-11-09 2012-05-10 Siemens Aktiengesellschaft Überspannungsableiter mit dehnbarer Manschette

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE527132C2 (sv) * 2003-04-30 2005-12-27 Abb Technology Ltd Ventilavledare
DE102011078210A1 (de) 2011-06-28 2013-01-03 Siemens Aktiengesellschaft Überspannungsableiter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0397163A1 (fr) * 1989-05-12 1990-11-14 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Enveloppe étanche à base d'enroulement filamentaire, et parafoudre composite en faisant application
EP0683496A1 (fr) 1994-05-13 1995-11-22 Asea Brown Boveri Ab Parafoudre
US5936826A (en) * 1998-03-25 1999-08-10 Asea Brown Boveri Ag Surge arrester
WO2009050011A1 (fr) 2007-10-12 2009-04-23 Tridelta Überspannungsableiter Gmbh Dispositif de protection contre les surtensions
DE102008057232A1 (de) * 2008-11-11 2010-05-12 Siemens Aktiengesellschaft Überspannungsableiter mit einem Varistorelement und Verfahren zur Herstellung eines Überspannungsableiters
DE102010043655A1 (de) 2010-11-09 2012-05-10 Siemens Aktiengesellschaft Überspannungsableiter mit dehnbarer Manschette

Also Published As

Publication number Publication date
WO2014016042A1 (fr) 2014-01-30
CN104584145A (zh) 2015-04-29
US20150213925A1 (en) 2015-07-30
US9728308B2 (en) 2017-08-08

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