WO2009076975A1 - Ensemble appareillage de commutation moyenne tension - Google Patents

Ensemble appareillage de commutation moyenne tension Download PDF

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Publication number
WO2009076975A1
WO2009076975A1 PCT/EP2007/011019 EP2007011019W WO2009076975A1 WO 2009076975 A1 WO2009076975 A1 WO 2009076975A1 EP 2007011019 W EP2007011019 W EP 2007011019W WO 2009076975 A1 WO2009076975 A1 WO 2009076975A1
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
medium
switchgear assembly
low
cartridge
Prior art date
Application number
PCT/EP2007/011019
Other languages
English (en)
Inventor
Dietmar Gentsch
Original Assignee
Abb Technology 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 Abb Technology Ag filed Critical Abb Technology Ag
Priority to PCT/EP2007/011019 priority Critical patent/WO2009076975A1/fr
Publication of WO2009076975A1 publication Critical patent/WO2009076975A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/24—Power arrangements internal to the switch for operating the driving mechanism using pneumatic or hydraulic actuator
    • 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
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
    • H01H33/302—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator for fluid insulated switchgear, wherein the insulating fluid is also the working fluid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/14—Air-break switches for high tension without arc-extinguishing or arc-preventing means with bridging contact that is not electrically connected to either line contact in open position of switch
    • H01H31/24—Air-break switches for high tension without arc-extinguishing or arc-preventing means with bridging contact that is not electrically connected to either line contact in open position of switch with rectilinearly-movable bridging contact

Definitions

  • the invention relates to a low-voltage, medium-voltage or high-voltage switchgear assembly, as claimed in the preamble of patent claim 1.
  • electrical switchgear assemblies in particular medium-voltage switchgear assemblies, also have a disconnector, which may assume three positions: connected position, disconnected position and grounding position; that is to say in the form of a three-position switch.
  • a connection is made to the live busbar in the connected position, and to ground in the grounding position.
  • the moving contact piece of the disconnector In the disconnected position, the moving contact piece of the disconnector is in a central position between the connected position and the grounding position.
  • disconnectors are used as an autonomous device in the same gas area as the load-break switch or circuit breaker or in a separate gas area, particularly in the case of double-busbar arrangements.
  • the electrical part of these devices is always a component of the gas area and is connected by means of a gas- tight bushing to the drive, which is located outside the gas area and, for medium-voltage applications, is normally in the form of a mechanical or magnetic drive.
  • the invention is therefore based on the object of developing further a medium-voltage switchgear assembly of this generic type so as to allow greater functional integration.
  • the disconnector is in the form of a three-position switch cartridge in which the switching element comprises an electrically conductive piston which can be moved in an at least partially insulated, (ceramic or plastic) , cartridge between the open and closed positions and grounded position via a pressure medium or fluid.
  • the correspondingly- moving piston switches said switch positions between the respective contacts which are arranged in or on the inner wall of the cartridge, which acts like a cylinder, and in which the piston can move.
  • the cartridge may, of course, also be non-cylindrical (as a "flat" cartridge) .
  • the pressure medium of the fluid is carried in a closed pumped line system.
  • the pressure which is required to move the piston can then be built up on an ad-hoc basis in this way for the switching process.
  • the pressure medium or the fluid ' is insulating oil.
  • oil as a pressure medium has the advantage in comparison to gas of being considerably less compressible, thus allowing the switching process to be controlled more objectively.
  • the pressure medium may, however, also be SF 6 gas, which has excellent insulation characteristics.
  • the cartridge is provided with a window in the form of an elongated hole for viewing the piston position.
  • a window in the form of an elongated hole for viewing the piston position.
  • the pump is arranged directly adjacent to the center part or to the end parts of the switch cartridge. This results in short pressure-medium paths and thus fast switching operations. - A -
  • the piston position or the switch positions are monitored via micro switches (or else visually) .
  • the instantaneous switch position can also be checked in this way.
  • the switch cartridge is cylindrical and is closed at both ends by covers, with at least one of the covers being transparent .
  • the instantaneous position of the piston can also be seen visually via this cover.
  • the switch cartridge is incorporated in a plastic or an insulating material, thus resulting in a solid- insulated pole part.
  • the disconnector is therefore in the form of a pole part .
  • the switch cartridge is integrated in a connecting flange such that this results in a two-position or three-position bushing for a switchgear assembly.
  • the current is transferred to the piston via a current strip, a spiral contact or else a multicontact strip.
  • the disconnector - in the form of a three-position switch cartridge - directly in functionally relevant parts, for example a cartridge in the gas area, or to integrate it as a cast-resin bushing, or to design the three-position switch cartridge such that (with its insulators) it itself forms the bushing.
  • the encapsulation technology is well known and is prior art .
  • the normal object of a three-position switch cartridge is to connect the live current paths of different gas areas and to isolate them from the grounded encapsulation.
  • the bushing can provide mechanical robustness between different enclosures, and can also keep them spaced apart. It is also possible to integrate this simple device in a switchgear assembly, freely suspended, since there is no need for any drive via a conventional spindle or else a push rod. In consequence, there is also no need for any rotating bushings either.
  • the drawing uses one exemplary embodiment to show a three-position switch cartridge comprising one or two insulators 1 and the two or three required metal parts 2, 3, 8 which transfer the current via a multicontact strip or a spiral contact 5 to an inner piston element
  • the piston 4 may be in the three positions: connected position, disconnected position
  • the piston 4 which is sealed from the enclosure, is moved by oil pressure (or compressed air, or SF 6 gas as a minimum) of the insulating oil.
  • oil pressure or compressed air, or SF 6 gas as a minimum
  • a toothed-wheel pump or piston pump 6 or else some other (volume) controlled pump
  • the pressure medium areas are sealed by means of an 0-ring seal 7 which rests on the piston 4 and is therefore inserted, forming a seal, between the piston 4 and the enclosure.
  • the load-break switch or circuit breaker is connected to one side of the three-position switch cartridge.
  • the three-position switch cartridge as an electrical part of the disconnector, may be completely encapsulated in cast resin, in which case the cast-resin body may be in the form of a bushing.
  • the other side of the three-position switch cartridge forms the direct connection to the busbar.
  • connection of the three-position switch cartridge may be linked to a solid- insulated rail, such that it can be plugged in.
  • the bushing is designed to be proof against direct contact on the side associated with the busbar, that is to say provided with a conductive coating.
  • the busbar may be connected via a plug contact which is part of the bushing.
  • the proposed two-position or three-position switch is based on an intrinsically closed cartridge which is filled with a small amount of insulating oil preferably - (or compressed air or else SF 6 gas as minimum) .
  • the cartridge itself comprises two insulators and the three required metal parts, see the drawing, which transfers the current via a multicontact strip or a spiral contact to an inner piston element (conductiveIy) .
  • the piston may be located at the three positions: connected position, disconnected position (central position) or else grounding position.
  • the piston In order to be moved to a new position, the piston, which is sealed against the enclosure, is moved by oil pressure (or compressed air, or SF 6 gas as a minimum) of the insulating oil.
  • a toothed-wheel pump or piston pump (or else some other volume-controlled pump) is arranged on the system and, when a switching movement occurs, pumps the oil (the air, the gas) from one volume of the device into the other volume, and moves the piston in a corresponding manner.
  • a micro switch or optical switch can also be integrated in the device (preferably under oil) . • Based on a technique which is already available in house, cast-resin insulators and metallic covers for transmission of the current (+ multicontacts or spiral contacts) . Comparatively low production cost.

Landscapes

  • Gas-Insulated Switchgears (AREA)

Abstract

La présente invention concerne un ensemble appareillage de commutation basse tension, moyenne tension ou haute tension tel qu'il est revendiqué dans le préambule de la revendication 1. Afin de garantir, dans ce cas, qu'une intégration fonctionnelle supérieure est possible, l'invention propose que le sectionneur soit sous forme de cartouche de commutation à trois positions dans laquelle l'élément de commutation comprend un piston métallique qui peut être déplacé, dans une cartouche en céramique (si cela est approprié) au moins partiellement isolante, entre les positions ouverte et fermée et la position mise à la terre, par l'intermédiaire d'un matériau ou fluide de pression.
PCT/EP2007/011019 2007-12-14 2007-12-14 Ensemble appareillage de commutation moyenne tension WO2009076975A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/011019 WO2009076975A1 (fr) 2007-12-14 2007-12-14 Ensemble appareillage de commutation moyenne tension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/011019 WO2009076975A1 (fr) 2007-12-14 2007-12-14 Ensemble appareillage de commutation moyenne tension

Publications (1)

Publication Number Publication Date
WO2009076975A1 true WO2009076975A1 (fr) 2009-06-25

Family

ID=39590282

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/011019 WO2009076975A1 (fr) 2007-12-14 2007-12-14 Ensemble appareillage de commutation moyenne tension

Country Status (1)

Country Link
WO (1) WO2009076975A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013167319A1 (fr) * 2012-05-08 2013-11-14 Siemens Aktiengesellschaft Système de couplage
US9216527B2 (en) 2012-02-09 2015-12-22 G & W Electric Company Solid-dielectric switch including a molded viewing window
EP2985775A1 (fr) * 2014-08-12 2016-02-17 GE Energy Power Conversion Technology Ltd Disjoncteurs
CN109494087A (zh) * 2018-11-06 2019-03-19 国网浙江杭州市富阳区供电有限公司 一种基于大数据分析的电力大客户使用保护系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1095367B (de) * 1955-08-12 1960-12-22 Bbc Brown Boveri & Cie Hydraulisch oder pneumatisch betaetigtes Schuetz
US3941957A (en) * 1974-05-09 1976-03-02 Tilman Ted N High current high voltage switch structure with conductive piston
JP2002051416A (ja) * 2000-08-03 2002-02-15 Toshiba Corp ガス絶縁開閉器
WO2005122352A1 (fr) * 2004-06-09 2005-12-22 Abb Technology Ag Installation de distribution isolee par gaz pourvue d'un regard permettant de determiner optiquement la position de commutation des contacts de commutation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1095367B (de) * 1955-08-12 1960-12-22 Bbc Brown Boveri & Cie Hydraulisch oder pneumatisch betaetigtes Schuetz
US3941957A (en) * 1974-05-09 1976-03-02 Tilman Ted N High current high voltage switch structure with conductive piston
JP2002051416A (ja) * 2000-08-03 2002-02-15 Toshiba Corp ガス絶縁開閉器
WO2005122352A1 (fr) * 2004-06-09 2005-12-22 Abb Technology Ag Installation de distribution isolee par gaz pourvue d'un regard permettant de determiner optiquement la position de commutation des contacts de commutation

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9216527B2 (en) 2012-02-09 2015-12-22 G & W Electric Company Solid-dielectric switch including a molded viewing window
US9659728B2 (en) 2012-02-09 2017-05-23 G & W Electric Company Solid-dielectric switch including a molded viewing window
WO2013167319A1 (fr) * 2012-05-08 2013-11-14 Siemens Aktiengesellschaft Système de couplage
EP2985775A1 (fr) * 2014-08-12 2016-02-17 GE Energy Power Conversion Technology Ltd Disjoncteurs
CN109494087A (zh) * 2018-11-06 2019-03-19 国网浙江杭州市富阳区供电有限公司 一种基于大数据分析的电力大客户使用保护系统
CN109494087B (zh) * 2018-11-06 2023-08-25 国网浙江杭州市富阳区供电有限公司 一种基于大数据分析的电力大客户使用保护系统

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