EP3559968A1 - Ensemble d'isolation pour installation haute ou moyenne tension - Google Patents

Ensemble d'isolation pour installation haute ou moyenne tension

Info

Publication number
EP3559968A1
EP3559968A1 EP18700528.5A EP18700528A EP3559968A1 EP 3559968 A1 EP3559968 A1 EP 3559968A1 EP 18700528 A EP18700528 A EP 18700528A EP 3559968 A1 EP3559968 A1 EP 3559968A1
Authority
EP
European Patent Office
Prior art keywords
arrangement according
insulator arrangement
structural element
insulator
relative permittivity
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
EP18700528.5A
Other languages
German (de)
English (en)
Other versions
EP3559968B1 (fr
Inventor
Katrin Benkert
Martin Koletzko
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
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Publication of EP3559968A1 publication Critical patent/EP3559968A1/fr
Application granted granted Critical
Publication of EP3559968B1 publication Critical patent/EP3559968B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66284—Details relating to the electrical field properties of screens in vacuum switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66292—Details relating to the use of multiple screens in vacuum switches

Definitions

  • Isolator arrangement for a high voltage or medium voltage system
  • the invention relates to an insulator assembly for a high voltage or medium voltage system according to the preamble of claim 1.
  • switchgear is often used as insulating Mate ⁇ rial a ceramic material.
  • the Isoliercopy ⁇ ness of these solids is generally quite high, due to defects in the lattice structure or grain structure of the ceramic materials may see a breakdown at high voltages, in particular higher than 72kV. Ie.
  • the breakdown field strength E bd is achieved in these materials from a critical electrical voltage or a critical potential.
  • the critical breakdown field strength E bd which is influenced by the defects mentioned, can not be increased solely by making the ceramic insulator correspondingly thicker or longer.
  • the object of the invention is to provide an isolato ⁇ ranowski altern for a high voltage or medium voltage system, which ensures over the prior art, an increase in the breakdown field strength of the insulator assembly with constant geometric dimensions.
  • the solution of the problem consists in an insulator arrangement for a high voltage and medium voltage system with the Merkma ⁇ len of claim 1.
  • the insulator arrangement according to the invention for a high-voltage or medium-voltage installation according to claim 1 has at least one structural element, which is designed achsensymmet ⁇ risch.
  • a typical symmetrical configuration of the structural element would be a cylindrical shape, which however may also be conical, and elliptical distortion is fundamentally technically possible from the cross section.
  • the structural element has at least two annular base ⁇ areas that are separated by a likewise annular Sperrbe- rich another.
  • annular is understood a cylindrical shape, which may also be conical or hollow cone-shaped, which has a circular or elliptical cross-section.
  • the invention is characterized in that the permittivity of the material of the stop band is at least twice as high as the Permit ⁇ tivity of the material of the base portion.
  • Blocking range relative to the base region of at least egg ⁇ nem factor 2 the electric field strength of the induced by the high voltage system electric field compared to the base regions is significantly reduced in the stop bands.
  • These field ⁇ attenuation is determined by the ratio of the relative permittivity of the material of the base regions and the relative per- mitttechnik the Sperr Symposiume determined. Characterized the Kera ⁇ mik is internally divided electrically in short axial pieces, which greatly increases ⁇ the electrical strength of the leg as well as the the entire isolator assembly through.
  • the vacuum also has a permittivity, which is also referred to as the electric field constant So.
  • the relative permittivity of the blocking region is at least five times as high as the permittivity of the base region, in particular it is advantageous if it is at least 10 times or particularly advantageously at least 100 times higher , such as the permittivity of the base region.
  • a high permittivity can be achieved in particular by a titanate, ie a salt of titanic acid, in particular barium titanate.
  • An advantageous combination Nati ⁇ on is in this case comprises as a material for the base region, an alumina or a material containing alumina and for the stopband a material based on a titanate, barium titanate or calcium titanate in particular ⁇ sondere.
  • the titanium oxide has a high permittivity and is suitable as a material or as a material component of the blocking region.
  • the relative permittivity of the material of Ba ⁇ sis Switzerlands is normally and preferably 5 to 25
  • the relative permittivity is a dimensionless quantity which, as aforesaid, is tivity from the ratio of Bacpermitti- and the electric field constant So obtained.
  • the rela tive ⁇ permittivity of the material of the stop band is at least twice as high in contrast, as the relative permittivity of the base portion so it has at least an amount 10, and results in a range between 10 and 10,000.
  • the relative permittivity of the control range is in a range between 100 and 10,000, particularly preferably between 1,000 and
  • the longitudinal extent of the base regions in the direction of the axis of symmetry amount to between 5 mm and 50 mm. It has been found that result in a particularly PDO te segmentation of the isolator assembly or of the structural element in the ⁇ sen length portions of the base portions themselves. The same applies to a length extension of the stop bands, which is between 0.1 mm and 5 mm.
  • the ratio of the linear expansion of a respective base portion to a jeweili ⁇ gen longitudinal extension of the corresponding locking portion having a magnitude between 10 and 100. It is expedient that the insulator arrangement described is part of a high-voltage or medium-voltage switchgear ⁇ system, which may be both a vacuum switching ⁇ system as well as a gas-insulated switchgear.
  • screen elements are attached to an inner wall of the isolie ⁇ - generating structural element, which serve to deflect and dissipate the electric field and to a more homogeneous distribution of equipotential lines in the material of the structural element.
  • These screen elements or shielding plates are preferably arranged so that they are fastened in the structural element where a blocking area is present.
  • equipotential lines are meant lines having the same electrical potential. They stand on corresponding field lines of the associated electric field perpendicular and white on a similar density. Narrow-running equipotential lines correspond with narrow field lines, and equally spaced equipotential lines lead to extended field lines.
  • FIG. 2 shows a projected view of an insulating structure ⁇ element with base regions and barrier regions
  • FIG. 3 shows a three-dimensional plan view of the structural element according to FIG. 2,
  • FIG. 4 shows a half-section through a structural element according to FIG. 2 with equipotential lines drawn in
  • Figure 5 is an analogous representation as in Figure 4 but with additional screen elements.
  • 1 shows an illustration of a high-voltage switchgear 3, which has a switching space 26, in which two switching contacts 24 are shown axially movable relative to each other, wherein an electrical contact can be made or separated by an axial movement of at least one of the switching contact.
  • the insulator arrangement 1 has three structural elements 2.
  • the isolator assembly 1 consists, if possible, of only one structural element
  • an insulator arrangement 1 a plurality of structural elements, which consist in particular of an oxide ceramic, for example aluminum oxide ceramic, are generally joined together by means of a corresponding joining process to form the entire insulator arrangement 1.
  • an oxide ceramic for example aluminum oxide ceramic
  • FIG. 2 shows a structural element 2 which has base regions 4 as well as barrier regions 6.
  • the base regions 4 have an axial length extension 8 that is greater than an axial longitudinal extent 12 of the stopper regions 6.
  • two base regions 4 are separated from one another by a blocking region 6.
  • the axial extent is described in each case along the axis of rotation 10.
  • Figure 3 for clarity is the same ⁇ iso-regulating structural element 2 of Figure 2 in a three- given a nal representation.
  • a homogeneous elekt ⁇ innovative field that is beschrie ⁇ ben by the equipotential lines 16, is shown.
  • the homogeneity of the field in the region 18 is indicated by the relatively uniform distance between the equipotential lines 16.
  • the equipotential line profile is very different; here there are regions with a high equipotential line density in which a strong predominates elekt ⁇ innovative field and a range with wide auseinan- der 140en equipotential lines 16 in which a weaker electric field is present.
  • shielding elements 14 which are also referred to as shielding plates 14, which effect a targeted and optimized steering of the equipotential lines 16.
  • shielding plates 14 are also shown correspondingly in FIG.
  • the shielding elements 14 are preferably configured such that they are anchored in blocking regions 6 in the structural element 2.
  • Reducing the equipotential lines 16 or the illustrated as electric field 16 in the barrier regions 6 of the structural element 2 is achieved in that the material of the barrier regions 6 has a relative permittivity that is at least twice as high as the relative Permittivi ⁇ ty of the base regions 4. In this way, the electric field is practically forced out of the blocking regions 6. This in turn causes electrical segmentation of the structural element 2 into the base regions 4. This in turn has a similar effect on the breakdown field strength ⁇ , as the joining of several structural elements, as shown in Figure 1 with the label 2 ⁇ for the structural element. Basically, the joining of structural elements 2 to an insulator assembly 1 is not desirable, since these are costly operations that require quality assurance and high technical complexity to ensure a vacuum tightness or gas tightness.
  • an insulator assembly 1 as possible to comprise only a structural element 2 in high-voltage equipment with a very high voltage, however, two or more structural elements 2 may be an insulator assembly 1 ge ⁇ added, and this then has an overall longitudinal extent, which is significantly smaller than the linear expansion of conventionally equipped structural elements according to the prior art without the described segmentation.
  • Can have a further advantage in the manufacture of the insulator structure is that in the production of the structural element 2 materials for the Basisbe ⁇ rich 4 and materials for the barrier regions 6 can alternately into a mold to be introduced and pressed already in this construction and will ge ⁇ sinters , Ie.
  • a segmented structural element 2 can be produced which has a penetration strength and strength, which can be achieved by conventional means only with structural elements which are produced by complex soldering processes or joining processes connected to each other.
  • the manufacturing cost of the insulator assembly can be significantly reduced and the claimed linear expansion and thus the space of the switchgear and the externa ⁇ ßere dimensioning of the switchgear can be reduced.

Landscapes

  • Insulating Bodies (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Inorganic Insulating Materials (AREA)

Abstract

L'invention concerne un ensemble d'isolation destiné à une installation haute ou moyenne tension et muni d'au moins un élément de structure (2) isolant à symétrie axiale. L'invention est caractérisée en ce que l'élément de structure (2) présente au moins deux zones de base (4) annulaires qui sont séparées les unes des autres par une zone de blocage (6) annulaire, la permittivité relative du matériau de la zone de blocage (6) étant au moins deux fois plus élevée que la permittivité du matériau de la zone de base.
EP18700528.5A 2017-01-27 2018-01-04 Ensemble d'isolation pour installation haute ou moyenne tension Active EP3559968B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017201326.5A DE102017201326A1 (de) 2017-01-27 2017-01-27 Isolatoranordnung für eine Hochspannungs- oder Mittelspannungsanlage
PCT/EP2018/050166 WO2018137903A1 (fr) 2017-01-27 2018-01-04 Ensemble d'isolation pour installation haute ou moyenne tension

Publications (2)

Publication Number Publication Date
EP3559968A1 true EP3559968A1 (fr) 2019-10-30
EP3559968B1 EP3559968B1 (fr) 2023-06-14

Family

ID=60997455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18700528.5A Active EP3559968B1 (fr) 2017-01-27 2018-01-04 Ensemble d'isolation pour installation haute ou moyenne tension

Country Status (7)

Country Link
US (1) US10930454B2 (fr)
EP (1) EP3559968B1 (fr)
JP (1) JP6999680B2 (fr)
KR (1) KR102258591B1 (fr)
CN (1) CN110226211B (fr)
DE (1) DE102017201326A1 (fr)
WO (1) WO2018137903A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017201326A1 (de) 2017-01-27 2018-08-02 Siemens Aktiengesellschaft Isolatoranordnung für eine Hochspannungs- oder Mittelspannungsanlage
IL269739B2 (en) * 2019-09-26 2024-05-01 Rafael Advanced Defense Systems Ltd Dielectric High Gradient Insulator and Manufacturing Method
EP4016576B1 (fr) * 2020-12-15 2024-10-02 Siemens Aktiengesellschaft Dispositif de commutation électrique pour applications moyenne et/ou haute tension
DE102021207962A1 (de) * 2021-07-23 2023-01-26 Siemens Energy Global GmbH & Co. KG Vakuumschaltröhre und Anordnung mit Vakuumschaltröhren sowie Verfahren zum Absteuern von Vakuumschaltröhren

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE241809C (fr)
DD226690A1 (de) * 1984-09-24 1985-08-28 Buchwitz Otto Starkstrom Schalterpol
DD241809A1 (de) * 1985-10-16 1986-12-24 Buchwitz Otto Starkstrom Isoliergehaeuse fuer eine vakuumschaltkammer
JP3344314B2 (ja) * 1998-04-08 2002-11-11 株式会社村田製作所 パルス発生用コンデンサ
DE10029763B4 (de) * 2000-06-16 2009-01-15 Siemens Ag Vakuumschaltröhre
FR2821479B1 (fr) * 2001-02-28 2003-04-11 Alstom Materiau isolant pour surmoulage sur appareils moyenne et haute tension, et appareils electriques moyenne et haute tension utilisant un tel materiau
JP4319571B2 (ja) * 2004-03-29 2009-08-26 株式会社東芝 樹脂モールド真空バルブおよびその製造方法
US7445850B2 (en) * 2004-04-14 2008-11-04 Ngk Spark Plug Co., Ltd. Switch container for hermetically encapsulating switch members and method for producing the same
JP4612407B2 (ja) 2004-12-22 2011-01-12 株式会社東芝 開閉装置
US20070007250A1 (en) * 2005-07-08 2007-01-11 Eaton Corporation Sealing edge cross-sectional profiles to allow brazing of metal parts directly to a metallized ceramic for vacuum interrupter envelope construction
DE102007022875B4 (de) 2007-05-14 2009-04-09 Siemens Ag Gehäuse für eine Vakuumschaltröhre und Vakuumschaltröhre
DE102009031598B4 (de) * 2009-07-06 2011-06-01 Siemens Aktiengesellschaft Vakuumschaltröhre
DE102010005466B3 (de) * 2010-01-20 2011-05-05 Siemens Aktiengesellschaft Vakuumschaltröhre
FR2971884B1 (fr) 2011-02-17 2014-01-17 Alstom Grid Sas Chambre de coupure d'un courant electrique pour disjoncteur a haute ou moyenne tension et disjoncteur comprenant une telle chambre
JP2014182877A (ja) * 2013-03-18 2014-09-29 Toshiba Corp 樹脂絶縁真空バルブ
EP2806432A1 (fr) 2013-05-23 2014-11-26 ABB Technology Ltd Corps isolant pour assurer l'isolation électrique d'un conducteur et dispositif électrique comprenant un tel corps isolant
DE102016214750A1 (de) * 2016-05-19 2017-11-23 Siemens Aktiengesellschaft Verfahren zur Herstellung eines keramischen Isolators
DE102017201326A1 (de) 2017-01-27 2018-08-02 Siemens Aktiengesellschaft Isolatoranordnung für eine Hochspannungs- oder Mittelspannungsanlage

Also Published As

Publication number Publication date
CN110226211A (zh) 2019-09-10
DE102017201326A1 (de) 2018-08-02
CN110226211B (zh) 2021-07-30
US20200027673A1 (en) 2020-01-23
JP6999680B2 (ja) 2022-01-18
JP2020507886A (ja) 2020-03-12
KR102258591B1 (ko) 2021-05-31
WO2018137903A1 (fr) 2018-08-02
US10930454B2 (en) 2021-02-23
EP3559968B1 (fr) 2023-06-14
KR20190104222A (ko) 2019-09-06

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