EP2619779B1 - Interrupteur à haute tension isolé par gaz servant à la coupure de courants de forte intensité - Google Patents

Interrupteur à haute tension isolé par gaz servant à la coupure de courants de forte intensité Download PDF

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Publication number
EP2619779B1
EP2619779B1 EP11752205.2A EP11752205A EP2619779B1 EP 2619779 B1 EP2619779 B1 EP 2619779B1 EP 11752205 A EP11752205 A EP 11752205A EP 2619779 B1 EP2619779 B1 EP 2619779B1
Authority
EP
European Patent Office
Prior art keywords
contact
housing
switch
switch according
contact arrangement
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
EP11752205.2A
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German (de)
English (en)
Other versions
EP2619779A1 (fr
Inventor
Javier Mantilla
Mathias-Dominic Buergler
Nicola Garbiboldi
Stephan Grob
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.)
ABB Technology AG
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 EP11752205.2A priority Critical patent/EP2619779B1/fr
Publication of EP2619779A1 publication Critical patent/EP2619779A1/fr
Application granted granted Critical
Publication of EP2619779B1 publication Critical patent/EP2619779B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/0015—Means for testing or for inspecting contacts, e.g. wear indicator
    • 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
    • H01H33/027—Integrated apparatus for measuring current or voltage
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H01H2071/044—Monitoring, detection or measuring systems to establish the end of life of the switching device, can also contain other on-line monitoring systems, e.g. for detecting mechanical failures
    • 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts

Definitions

  • the present invention relates to a gas-insulated high voltage switch according to the preamble of claim 1.
  • Switches of the aforementioned type are designed as a circuit breaker and have a rated current carrying capacity of at least a few kA in the voltage range of more than a few kV.
  • these switches are used as a generator switch and therefore contain a loadable with high rated currents contact arrangement with two - each a rated current and an arc contact containing - switching pieces.
  • a current path containing the rated current contacts serves to guide the major part of the operating current, whereas a power path connected in parallel with the nominal current path and containing the arcing contacts only briefly conducts the entire current when interrupting a generally extremely high-power current.
  • the arcing contacts then take on a powerful arc switching, which causes a more or less strong contact erosion depending on the size of the work done by him.
  • a switch of the type mentioned is described in DE U 20 2007 018 709 U1 ,
  • the contact erosion of the arcing contacts with the aid of sensors and a signal detection unit during operation of the switch, ie with the contact arrangement is closed, and the user of the switch is informed by a connected to the signal detection unit display on the caused by Maisabbrand current state of the arcing contacts , If a time interval is undershot, which corresponds to a critical value of reduced by burned length of the arcing contacts, the user is informed by an optical, especially colored, and / or an acoustic signal that the remaining life of the switch is relatively low.
  • Vacuum switch are each described with a located in an evacuated vessel contact arrangement.
  • the contact arrangement has two contacts which abut head-to-head when the contact arrangement is closed.
  • a movable of the two contacts is rigidly connected to a arranged outside the vessel rod of a driving force transmitting gear.
  • the contact erosion during operation of the switch is indicated in each case by means of an indicator which is attached directly to the rod or to an arm of a two-armed lever of the gearbox which is articulated to the drive rod.
  • the indicator shows the sum of the change in length of the two contacts and thus the remaining service life of the switch as a function of the position of the drive force on the transmission transmitting the contact arrangement.
  • a circuit breaker is described with a single contact arrangement and a device for Abbranddetetation the contacts.
  • the contact arrangement has two contacts which abut head-to-head when the contact arrangement is closed.
  • One of the two Kontak Republice is movable and is driven by the switch drive via lever.
  • the switch drive also moves a directly connected to the drive and located outside the housing lever, which reproduces the rotation angle of the drive shaft and thus indirectly indicates the position of the movable contact piece outside the housing.
  • the invention has for its object to provide a gas-insulated switch of the type mentioned, in which the determined by Maisabbrand the arcing contacts residual life is detected and displayed by simple mechanical means.
  • gas-insulated high-voltage switch serves to interrupt large currents and has a insulating gas-filled housing, a housing arranged in the contact arrangement, the two along an axis relative to each movable contact pieces each having a rated current and an arcing contact, a drive, which acts on a first of both contact pieces, and a device for detecting and indicating the induced by arc contact erosion of the two arcing contacts with an outside of the housing arranged display.
  • the detection and display device has a gas-tight guided by the housing gear with a coupled to the actuator drive member.
  • the switch according to the invention is therefore independent of the switch drive with the contact arrangement closed, i. Under operating conditions, detected by contact erosion shortening of the arcing contacts with simple mechanical means and this shortening and thus also the contact erosion respectively. the remaining life of the switch displayed by means of a suitably arranged and formed gear outside the housing. Since this switch is a switch with a rated current path and a parallel connected power path, in which it is essential for the switching behavior that the arc contacts disconnect within a certain time interval after opening the rated current contacts when switching off and within Close this time interval before the rated current contacts, so the reliability of the switch is increased in a simple and cost-effective manner.
  • the transmission can have a gas-tight guided through the wall of the housing shaft, whose lying within the housing end with the drive member and its outside of the housing end is connected to a display element of the display.
  • a switch can be made simple and economical and is also characterized by a good gas tightness.
  • the display of the remaining life of the switch is facilitated when the drive member is acted upon by a restoring force and is supported against the restoring force on the actuating member when the contact arrangement is closed.
  • the drive element is designed as a rigidly connected to the shaft two-armed lever, the first arm of the lever is acted upon by the restoring force and the second arm of the lever with closed contact arrangement on the actuator and with open contact arrangement supported on a fixed stop.
  • the detection and display device of the switch is therefore in a clearly defined position both with the contact assembly closed and opened. This allows a simple calibration of the detection and display device and increases the quality and reliability of the determined via a contact shortening values of Maisabbrands resp. the remaining life.
  • the transmission having a bearing block arranged in the housing, in which the actuating member and the restoring force transmitting sliding body are mounted axially displaceable and in which the shaft is pivotally mounted.
  • the drive member may be formed as a one-armed, acted upon by the restoring force lever whose arm is supported with the contact assembly closed on the actuator and with open contact arrangement on a fixed stop.
  • the restoring force can be achieved by means of a leg spring supported on the shaft, which is held on the housing.
  • this embodiment of the switch can advantageously have an integrated into the transmission, arranged in the housing bearing block, in which the shaft is pivotable and - unlike the embodiment with the two-armed lever - only the actuator is mounted axially displaceable.
  • the two embodiments of the high-voltage switch according to the invention shown in the figures are each designed as a generator switch and are typically designed for a rated voltage of 24 kV, a rated current of 6.3 kA, a permissible short-circuit current of 63 kA and a nominal frequency of 50/60 hertz , Both embodiments have a housing 10 which is filled with an arc-containing insulating gas, for example based on sulfur hexafluoride and / or nitrogen and / or carbon dioxide, of generally up to a few bar pressure.
  • the housing has a hollow cylindrical insulator 11 and two metal hollow bodies 12, 13, each serving as a power connection, between which the insulator is flanged gas-tight.
  • contact arrangement which has two along an axis A relatively movable switching pieces 20 and 30.
  • the switching piece 20 is connected to a drive, not shown, and - as indicated by a double arrow D - when closing along the axis A upwards and when opening along the axis A down.
  • the contact piece 20 has in axially symmetrical arrangement a tubular arcing contact 21 and a contact surrounding this contact with rated current contact 22, whereas the contact piece 30 in axially symmetrical arrangement also includes a tubular arc-shaped contact 31 and the arcing contact 31 at a distance surrounding rated current contact 32.
  • the arcing contact 31st is slidably mounted relative to the rated current contact 32 along the axis A and is at a closed switch with its arc-trained free end by means of a prestressed spring 33 to form a sufficient contact force and a joint S on the also supported arc-free free end of the arcing contact 21 supported.
  • a typically polytetrafluoroethylene (PTFE) containing insulating nozzle 40 is fixed, which is arranged between the arcing contact 21 and the rated current contact 22 and projects beyond the free ends.
  • the arc contact 21 and the rated current contact 22 are electrically conductively connected via a radially extending wall 23 and, together with the wall 23 and the nozzle 40, define a heating volume 24 which serves to receive compressed arc gas.
  • This quenching gas is generated when opening the switch by a switching arc, which is based on the opening when separating arc contacts 21, 31, and flows from an arc receiving, limited by the contacts 21, 31 and the insulating 40 arc zone in the heating volume 24th
  • the switching piece 20 is guided in a fixed, metal hollow cylinder 14, which together with the wall defines a compression space 25 of a piston-cylinder compression device.
  • insulating gas is compressed when opening the switch with the help of then guided down, acting as a piston switching piece 20. If the gas pressure in the heating volume 24 is smaller than in the compression space 25, the compressed insulating gas is conducted from the compression space 25 into the heating volume 24.
  • the contact piece 30 has a contact carrier 34 in the form of a pot.
  • the contact carrier is integrated at its acting as an edge of the pot end in serving as a power connection hollow body 13.
  • a hollow cylinder 35 is arranged, which serves for the axial guidance of the arcing contact 31 and in which the spring 33 is mounted.
  • the arcing contact 31 carries at its upper end as a rod formed, axially aligned actuator 50, which is guided through a shield 36 into an upper portion formed as a metal lid 15 of the housing 10.
  • the actuator 50 cooperates with a device M, which detects the current, determined by the position of the actuator 50 state of the arcing contacts 21, 31 and displays.
  • the position of the actuator 50 serves as a measure of the contact erosion caused by the eroding and corrosive effect of the switching arc.
  • the detection and display device M includes an activatable by the actuator 50 gear 60 and a mechanically operated by the transmission, outside the housing 10, respectively. the housing portion 15 arranged display 70 (only in the Figures 5 and 9 shown).
  • the housing section 15 carries a fixedly held bearing block 61 of the transmission 60.
  • This bearing block serves to guide one of the displaceable along the axis A actuator 50 to the other but also the storage of a particular of the Figures 5 and 9 apparent transmission shaft 60.
  • the transmission further includes a drive member 63 which is rigidly connected to the shaft 62.
  • the switch When the switch is closed, the current to be interrupted predominantly from the terminal 12 via the hollow cylinder 14, a slide contact, not shown, the rated current contacts 22, 32 led to the contact carrier 34 and serving as a power connection hollow body 13. A smaller part of the current to be interrupted flows in a parallel to the rated current contacts 22, 32 arranged, the connecting wall 23, the arc contacts 21, 31, a sliding contact, not shown, and the hollow cylinder 35 containing current path to the terminal 13.
  • the prestressed spring 33 delivers to the Impact point S the necessary contact force.
  • the drive D leads the contact piece 20 down.
  • the one in the switch-on position of the switch ( FIGS. 1, 2 . 5 . 6, 7 and 9 ) supported on the arcing contact 21 arc contact 31 is hereby tracked by the prestressed spring 33 while maintaining the required contact force.
  • the rated current contacts 22, 32 and commute the current completely in the parallel-connected current path, which instead of the rated current contacts now the connecting wall 23, the arcing contacts 21, 31, a sliding contact, not shown, and the hollow cylinder 35 contains.
  • the arc contacts 21, 31 separate and form a switching arc between their mutually opposite free ends.
  • This switching arc forms hot, pressurized gas, which expands into the heating volume 24.
  • the gas stored in the heating volume 24 possibly assisted by compressed insulating gas from the compression space 25 - inflates the arc, which leads to an interruption of the current.
  • the switch enters the switch-off position ( FIGS. 3, 4 and 8th ).
  • the high energy of the switching arc erodes and corrodes the arcing contacts 21, 31 and thus reduces the length of the arcing contacts by contact erosion.
  • the prestressed spring 33 leads the arcing contact 31 downwards, whereby the reduced length of the contacts 21, 31 is compensated. Accordingly, the arcing contact 31 and thus also the actuator 50 move towards their position before switching off down. If the switch is closed again after the power interruption, the changed position of the actuating member 50, which corresponds to the sum of the length loss resulting from contact erosion on both arcing contacts 21, 31, can be read on the display 70.
  • the current state of the arcing contacts 21, 31 displayed and on the other hand also be calibrated. It is thus achieved that a suitably calibrated detection and display device M always emits a warning signal when the actuator 50 is too far moved down. Since then the free ends of the arcing contacts 21, 31 with respect to the free ends of the rated current contacts 22, 32 are so unfavorably positioned during a switching operation that the arc contacts do not disconnect when switching off within a certain time interval after opening the rated current contacts resp. fail to close at power on within this time interval before the rated current contacts, so a faulty switching action is avoided and the user at the same time the remaining life of the switch resp. communicated its maintenance needs.
  • the drive member is designed as a two-armed lever.
  • the first arm of the lever is supported on a guided in the bearing block 61, acted upon by means of a prestressed spring 612 with a restoring force sliding body 611.
  • the second arm of the lever designated by the reference numeral 632, is supported when the contact arrangement is closed ( Fig.2 ) on the end facing away from the shock, protruding from the bearing block 61 end of the actuator 50 and with open contact arrangement ( Figure 4 ) on the then acting as a stop bearing block 61 from.
  • the restoring force transmitted to the arm 631 via the sliding body 611 keeps the lever arm 632 in a defined position both when the contact arrangement is open and when the contact arrangement is closed. It is then via the shaft 62 and mechanically connected to the shaft display element 71 (FIG. Figure 5 ) only with mechanical means, the current position of the arcing contact 31, respectively. of the actuator 50 and thus recognizable by length reduction burnup of the arcing contacts 21, 31 shown in the display 70.
  • the drive member is designed as a one-armed lever.
  • a leg spring 621 supported on the shaft 62 acts on the shaft counterclockwise ( FIGS. 7 and 8 ) acting torque. Therefore, the designated with the reference numeral 633 single arm of the lever with closed contact arrangement ( Figure 7 ) on the end facing away from the shock, protruding from the bearing block 61 end of the actuator 50 and with open contact arrangement ( Figure 8 ) on the then as a stop acting bearing block 61 from.
  • the force transmitted to the arm 633 by the biased spring 621 via the shaft 62 holds the arm in both the on and off states in a defined position in which the shaft 62 and the indicator mechanically connected to the shaft 71 only by mechanical means, the current position of the actuator 50 and thus the current state of the arcing contacts 21, 31 are shown in the display 70.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (8)

  1. Commutateur à haute tension à isolement gazeux pour interrompre des courants élevés, comprenant un boîtier (10) rempli de gaz isolant, un arrangement de contact disposé dans le boîtier (10), lequel présente deux pièces de commutation (20, 30) pouvant se déplacer l'une par rapport à l'autre le long d'un axe (A) possédant respectivement un contact de courant nominal (22, 32) et un contact d'arc (21, 31), un mécanisme d'entraînement (D) qui agit sur une première (20) des deux pièces de commutation, et un dispositif (M) pour détecter et indiquer la combustion de contact des deux contacts d'arc (21, 31) provoquée par l'effet de l'arc électrique avec un indicateur (70) disposé à l'extérieur du boîtier (10), les deux contacts d'arc (21, 31), lorsque l'arrangement de contact est fermé, se rencontrant tête contre tête en formant un point de jonction (S) avec à chaque fois une extrémité libre et le dispositif de détection et d'indication (M) présentant un engrenage (60) qui traverse le boîtier (10) de manière hermétique au gaz et qui est muni d'un élément d'entraînement (63) accouplé avec l'organe d'actionnement (50), caractérisé en ce que le contact d'arc (31) de la deuxième pièce de commutation (30) est logé de manière à pouvoir coulisser dans le sens axial contre l'effet d'un ressort (33) précontraint par rapport au contact de courant nominal (32) de la deuxième pièce de commutation maintenu en position fixe dans le boîtier (10) et comporte à son extrémité à l'opposé du point de jonction (S) un organe d'actionnement (50) dirigé dans le sens axial.
  2. Commutateur selon la revendication 1, caractérisé en ce que l'engrenage (60) présente un arbre (62) qui est amené de manière hermétique au gaz à travers la paroi du boîtier (10), dont l'extrémité qui se trouve à l'intérieur du boîtier (10) est reliée avec l'élément d'entraînement (63) et dont l'extrémité qui se trouve à l'extérieur du boîtier (10) est reliée avec un élément d'indication (71) de l'indicateur (70).
  3. Commutateur selon la revendication 2, caractérisé en ce que l'élément d'entraînement (63) est chargé avec une force de rappel et, lorsque l'arrangement de contact est fermé, s'appuie sur l'organe d'actionnement (50) en s'opposant à la force de rappel.
  4. Commutateur selon la revendication 3, caractérisé en ce que l'élément d'entraînement (63) est réalisé sous la forme d'un levier à deux branches relié de manière rigide avec l'arbre (62), en ce qu'un premier bras (631) du levier est chargé avec la force de rappel et en ce que le deuxième bras (632) du levier s'appuie sur l'organe d'actionnement (50) lorsque l'arrangement de contact est fermé et sur une butée fixe lorsque l'arrangement de contact est ouvert.
  5. Commutateur selon la revendication 4, caractérisé en ce que l'engrenage (60) présente un bloc palier (61) disposé dans le boîtier (10), dans lequel sont logés de manière à pouvoir coulisser dans le sens axial l'organe d'actionnement (50) et un corps de glissement (611) qui transmet la force de rappel et dans lequel l'arbre (62) est logé de manière pivotante.
  6. Commutateur selon la revendication 3, caractérisé en ce que l'élément d'entraînement (63) est réalisé sous la forme d'un levier à une branche chargé par la force de rappel, dont le bras (633), lorsque l'arrangement de contact est fermé, s'appuie sur l'organe d'actionnement (50) et, lorsque l'arrangement de contact est ouvert, s'appuie sur une butée fixe.
  7. Commutateur selon la revendication 6, caractérisé en ce qu'un ressort spiralé (621) qui s'appuie sur l'arbre (62) et sert à produire la force de rappel est maintenu sur le boîtier (10).
  8. Commutateur selon l'une des revendications 6 ou 7, caractérisé en ce que l'engrenage (60) présente un bloc palier (61) disposé dans le boîtier (10) dans lequel l'organe d'actionnement (50) est logé de manière à pouvoir coulisser dans le sens axial et l'arbre (62) de manière à pouvoir pivoter.
EP11752205.2A 2010-09-24 2011-09-01 Interrupteur à haute tension isolé par gaz servant à la coupure de courants de forte intensité Active EP2619779B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11752205.2A EP2619779B1 (fr) 2010-09-24 2011-09-01 Interrupteur à haute tension isolé par gaz servant à la coupure de courants de forte intensité

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10179319 2010-09-24
EP11752205.2A EP2619779B1 (fr) 2010-09-24 2011-09-01 Interrupteur à haute tension isolé par gaz servant à la coupure de courants de forte intensité
PCT/EP2011/065094 WO2012038227A1 (fr) 2010-09-24 2011-09-01 Interrupteur à haute tension isolé par gaz servant à la coupure de courants de forte intensité

Publications (2)

Publication Number Publication Date
EP2619779A1 EP2619779A1 (fr) 2013-07-31
EP2619779B1 true EP2619779B1 (fr) 2014-03-19

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EP11752205.2A Active EP2619779B1 (fr) 2010-09-24 2011-09-01 Interrupteur à haute tension isolé par gaz servant à la coupure de courants de forte intensité

Country Status (4)

Country Link
US (1) US9177740B2 (fr)
EP (1) EP2619779B1 (fr)
CN (1) CN103119677B (fr)
WO (1) WO2012038227A1 (fr)

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
CN103247870B (zh) * 2013-05-20 2015-03-18 中国能建集团装备有限公司南京技术中心 一种gil过渡段导体连接结构
US9305726B2 (en) * 2014-08-27 2016-04-05 Eaton Corporation Arc extinguishing contact assembly for a circuit breaker assembly
FR3039924B1 (fr) * 2015-08-07 2019-05-10 Supergrid Institute Appareil de coupure mecanique d'un circuit electrique
DE102017216275A1 (de) 2017-09-14 2019-03-14 Siemens Aktiengesellschaft Anordnung und Verfahren zum Schalten hoher Ströme in der Hoch-, Mittel- und/oder Niederspannungstechnik
CN114496676B (zh) * 2020-10-26 2024-06-18 西门子能源国际公司 弧触头组件以及断路器

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
FR2346837A1 (fr) 1976-03-30 1977-10-28 Merlin Gerin Procede et dispositif indicateur d'usure d'un disjoncteur electrique a enceinte etanche scellee
CN1019431B (zh) * 1988-05-24 1992-12-09 梅兰日兰公司 密封外壳中压电气开关
US6002560A (en) 1998-09-02 1999-12-14 Eaton Corporation Circuit breaker contact wear indicator
DE19958645C5 (de) * 1999-12-06 2011-05-26 Abb Technology Ag Hybridleistungsschalter
JP2006310133A (ja) 2005-04-28 2006-11-09 Mitsubishi Electric Corp 真空遮断器およびその接点のスロークローズ方法並びにそれを用いた接点の摩耗量測定方法および接点間のギャップ長さ設定方法
CN2879397Y (zh) * 2006-03-04 2007-03-14 吉林龙鼎电气股份有限公司 具有触头磨损厚度检测装置的真空断路器
CN201302605Y (zh) 2006-06-26 2009-09-02 Abb技术有限公司 能够确定和显示接触部烧损的大功率开关
JP5032091B2 (ja) 2006-10-12 2012-09-26 株式会社東芝 ガス絶縁開閉装置及びガス絶縁開閉装置用部品のアーク損傷検出方法

Also Published As

Publication number Publication date
US20130213936A1 (en) 2013-08-22
EP2619779A1 (fr) 2013-07-31
WO2012038227A1 (fr) 2012-03-29
US9177740B2 (en) 2015-11-03
CN103119677A (zh) 2013-05-22
CN103119677B (zh) 2016-06-15

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