EP1675144A1 - Disjoncteur à haute puissance avec conducteur pour les courants court-circuits résistant à des arcs électriques - Google Patents

Disjoncteur à haute puissance avec conducteur pour les courants court-circuits résistant à des arcs électriques Download PDF

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Publication number
EP1675144A1
EP1675144A1 EP04405796A EP04405796A EP1675144A1 EP 1675144 A1 EP1675144 A1 EP 1675144A1 EP 04405796 A EP04405796 A EP 04405796A EP 04405796 A EP04405796 A EP 04405796A EP 1675144 A1 EP1675144 A1 EP 1675144A1
Authority
EP
European Patent Office
Prior art keywords
current
carrying element
contact piece
contact
arcing contact
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Withdrawn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
EP04405796A
Other languages
German (de)
English (en)
Inventor
David Saxl
Markus Vestner
Thomas Nordstroem
Thomas Borg
Thomas Strom
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 EP04405796A priority Critical patent/EP1675144A1/fr
Priority to EP05812736A priority patent/EP1831906B1/fr
Priority to DE502005009053T priority patent/DE502005009053D1/de
Priority to CN2005800439713A priority patent/CN101288141B/zh
Priority to PCT/CH2005/000747 priority patent/WO2006066426A1/fr
Priority to AT05812736T priority patent/ATE458258T1/de
Priority to JP2007547137A priority patent/JP2008525945A/ja
Publication of EP1675144A1 publication Critical patent/EP1675144A1/fr
Priority to US11/812,315 priority patent/US7595461B2/en
Withdrawn legal-status Critical Current

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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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7023—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle
    • 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
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • 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
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7061—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by use of special mounting means
    • 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
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7076—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by the use of special materials

Definitions

  • the invention relates to the field of high-power switch technology. It relates to a high-performance switch according to the preamble of claim 1.
  • a high-power switch which has a contact tulip as arcing contact piece, which forms a flat contact for guiding a short-circuit current with a current-carrying element.
  • a tube made of burn-resistant material is provided, which is intended to protect the interior of the contact tulip from hot gas, wherein the gas is heated by a footing on the arc contact piece arc and flows through the contact tulip and to beyond the current-carrying element ,
  • such a hot gas stream can remove material from the current-carrying element and / or the contact tulip, which can lead to a degradation of the electrical contact between the contact tulip and the current-carrying element. Increasing contact resistance and even interruption of contact may result.
  • the tube of erosion-resistant material is screwed into the current-carrying element and has in the part in which it is disposed within the contact tulip, an outer diameter which is greater than the inner diameter of the contact tulip at the respective location.
  • the gas flow available cross-sectional area decreases greatly. If this cross-sectional area remains approximately constant in order to keep similar outflow velocities, a larger contact tulip and a larger current-carrying element must be provided (with the same cross-sections available for the short-circuit current), so that an overall larger high-power switch is the result.
  • a compact, ie small external dimensions exhibiting high-performance switch is to be created, which has a small, not by hot gas-induced contact degradation with time increasing electrical resistance between an arcing contact piece and a short-circuit current from the arcing contact piece dissipating current-carrying element.
  • the high-performance switch according to the invention with an axis by means of which an axial coordinate parallel to the axis and a radial coordinate perpendicular thereto are defined, has an arcing contact piece, a current-carrying element and a burn-off protection element.
  • the arcing contact piece has an opening for guiding a substantially axial flow of a gas heated by an arc which may be located on the arcing contact piece.
  • the current-carrying element is shielded near the surface contact substantially from the flow.
  • the high-performance switch is characterized in that the current-carrying element has an axial region in which a radial inner dimension of the current-carrying element is increasing gradually or continuously with increasing distance measured parallel to the axis to the flat contact.
  • the high-performance switch is characterized in that the current-carrying element has an axial (that is, defined by its axial extent) at the end facing the planar contact a radial inner dimension of the current-carrying element is smaller than at the flat contact facing away from the end.
  • the flat contact facing the end of the area directly on the flat contact or near the surface contact.
  • the invention makes it possible to simultaneously realize a large-area contact between arcing contact piece and current-carrying element (with correspondingly low contact resistance) and protection against hot-gas-induced contact degradation (on the large-area contact).
  • a very compact design of the high-performance switch and a long service life is made possible in this way.
  • the current-carrying element be chamfered, preferably already from the surface contact with the arcing contact piece.
  • the axial region is advantageously arranged on the side facing away from the arcing contact piece of the flat contact.
  • the axial region is arranged near the arcing contact piece.
  • the axial region is provided for receiving the erosion protection element.
  • the radial outer dimension of the high-power switch can be kept very small.
  • the current-carrying element and the erosion protection element are essentially rotationally symmetrical educated.
  • the entire high-power switch is designed substantially rotationally symmetrical.
  • the radial outer dimension of the erosion protection element is preferably its outer diameter.
  • a radial outer dimension of the Abbrandtikiatas and the radial inner dimension of the current-carrying element in the axial region are adapted to each other. This allows a compact design of the switch.
  • the erosion protection element is fitted in the current-carrying element.
  • the erosion protection element is axially extended up to the arcing contact piece.
  • the erosion protection element may be extended to the arcing contact piece (so that arcing contact and erosion protection element touch each other) or beyond (until there is a region in which the erosion protection element and the arcing contact piece overlap axially).
  • the erosion protection element may also be axially extended (only) up to the axial extent of the arcing contact piece (so that the areas of the axial extent of arcing contact piece and erosion protection element contact each other without overlapping).
  • the erosion protection element has a more erosion-resistant material than the current-carrying element near the surface contact.
  • at least the hot gas flow side facing the Abbrandtikides of such Abbrandfesten material, preferably the whole Abbrandterrorismelement is made of such a material.
  • Near the flat contact that part of the current-carrying element is arranged, which, if it would be exposed to a hot gas flow, particularly rapidly to a degradation of the contact between the arcing contact piece and the current-carrying element. This part is advantageously protected by the erosion-resistant material of Abbrandtikettis against degradation by hot gas.
  • a radial inner dimension of the erosion protection element is substantially equal to a radial inner dimension of the arcing contact element.
  • a high-performance switch may have a discharge pipe for guiding the hot gas flow.
  • the outflow tube serves to guide a flow of a gas heated by an arc which may be located on the arcing contact piece.
  • the Abbrandtikelement is connected to the outlet pipe with great advantage.
  • the outflow pipe and the erosion protection element are integrally formed. This facilitates the manufacture and assembly of the heavy-duty circuit breaker.
  • the burn-off protection element is advantageously integrated in the outflow pipe.
  • the current-carrying element is firmly connected to an auxiliary nozzle surrounding the arcing contact piece.
  • the current-carrying element serves to support an insulating nozzle arrangement (comprising at least one main nozzle and at least one auxiliary nozzle) or to hold, or the current-carrying element is fixedly connected to such a support or holder or formed in one piece.
  • the surface contact is advantageously oriented substantially radially. At least the surface contact does not extend exclusively along the horizontal coordinate.
  • the current-carrying element and / or the arcing contact piece can be provided with a coating for reducing the contact resistance on a surface contributing to the planar contact, preferably (in each case) over the entire areal surface contact.
  • a coating can be, for example, a silver plating.
  • a nominal current contact system is provided in addition to the arcing contact piece. This carries a rated current in the closed switch state, while after the rated current contact piece separation, the current commutates to an arcing contact system comprising the arcing contact piece. After the separation of the arcing contact system, an arc to be extinguished, carrying the short-circuit current, is ignited. It is also possible that the arcing contact together with another arcing contact forms a rated current contact system.
  • a high power switch is typically designed to carry short circuit currents between 2kA and 80kA at rated voltages between 10kV and over 1000kV, preferably between 30kV and 550kV.
  • Fig. 1 shows schematically and cut a section of an inventive high power switch in the open switching state.
  • the high-power switch is substantially rotationally symmetrical with a rotation axis A, by which an axial coordinate designated by z and a radial coordinate designated by r is defined.
  • a nominal current contact system 9 consisting of two rated current contacts 9 was first opened, so that a current flowing through the switch commutates to an arcing contact piece system consisting of two arcing contacts 1.1b. After separating the two arcing contact pieces 1,1b burns between them, an arc 5, and a short-circuit current I, symbolized by thin open arrows, flows through the two arcing contact pieces 1,1 b.
  • the arc contact piece 1 is formed as a contact tulip with a plurality of contact fingers and has an opening 6.
  • An extinguishing gas 4 provided in the switch, for example SF 6 is heated by the arc 5 and forms, optionally together with further gaseous material, a gas flow 4 (symbolized by thick open arrows) which flows through the opening 6.
  • the short circuit current I flows through a radially aligned flat contact F at the end of the contact tulip 1 in a current-carrying element 2 and from there to the terminals of the switch.
  • a burn-off protection element 3a is provided, which is formed integrally here together with an outflow tube 3.
  • the current-carrying element 2 is generally made of a less erosion-resistant (heat-resistant) material (for example aluminum or copper) than the erosion protection element 3a, which may be made of steel or a carbon fiber composite material, for example.
  • the Lichltbogentitle Georgia 1 can be made for example of copper, steel or tungsten-copper.
  • the entire bottom surface of the arcing contact piece 1 serves as a contact surface F to the current-carrying element 2, and from there the current-carrying element 2 is protected from the gas flow 4 by the erosion protection element 3 a.
  • suitable materials can be dispensed with additional protection of the arcing contact piece 1 from burning, so that the erosion protection element 3a only the contact surface F and the contact surface near part of the current-carrying element 2 must protect from hot gas.
  • the contact tulip 1 can, as shown in Fig. 1, be screwed into the current-carrying element 2. By a thread only a negligible current between arcing contact piece 1 and current-carrying element 2 can flow, so that the lateral surface of the contact tulip makes no contribution to the contact surface.
  • the inner diameter d2 of the current-carrying element 2 increases continuously.
  • the outer diameter of the erosion protection element 3a increases.
  • the inner diameter of the Abbrandtikettis 3a is in an axial region 2b (or at least close to the contact surface F) equal to the inner diameter d1 of the arcing contact piece 1 near the contact surface F.
  • the gas 4 flowing out through the arcing contact piece 1 is provided with a large outflow cross-section, while the outer dimensions of the switch remain low and the cross-sectional area F available to the short-circuit current I is very large.
  • the current-carrying element 2 still has the function of holding an insulating auxiliary nozzle 7 and, via a metallic tube (which also carries one of the rated current contact pieces 9), an insulating main nozzle 8. Both arcing contact pieces 1, 1b or only one of the two can be designed to be movable.
  • the arcing contact piece 1, the outflow pipe 3, the current-carrying element 2, the insulating nozzle arrangement 7, 8 and the rated current contact 9 arranged on the insulating nozzle side can be firmly connected to one another.
  • FIG. 1 The other figures show schematically and in section possible embodiments of the area near the flat contact F, as they are possible in a high-performance switch according to FIG. 1 or in another switch with an arcing contact piece 1, a current-carrying element 2 and a burn-off protection element 3a.
  • Fig. 2 shows the embodiment of Fig. 1, wherein the thread is shown more clearly.
  • the illustration is somewhat idealized, since due to manufacturing tolerances some surfaces may have a small spacing from one another. In connection with Fig. 3, this problem is discussed.
  • the contact piece 1 can also, instead of being connected to the current-carrying element 2 by means of a thread, be in this press-fit.
  • This is an example of a positive connection.
  • the bevel of Abbrandstoffides 3a may be formed less strong than the bevel of the current-carrying element 2, as shown in Fig. 3.
  • the contact tulip 1 may also have a chamfer, which prevents manufacturing tolerance-related fitting problems of the erosion protection element 3a.
  • a stump-shaped end of the erosion protection element 3a can also be provided.
  • FIG. 4 shows a further exemplary realization of how a contact pressure leading to a low contact resistance can be achieved at the contact surface 6.
  • the arcing contact piece 1 is pressed by means of a union nut 10 or a flange 10 against the current-carrying element.
  • FIG. 4 shows that the burn-off protection element 3 a can also be arranged separately from the outflow pipe 3.
  • Fig. 5 shows that it is also possible to provide a plurality of bevels of the current-carrying element 2 and / or erosion protection element 3a.
  • FIG. 6 shows that it is also possible to provide the erosion protection element 3a extended with respect to the axial coordinate beyond the extent of the arcing contact piece 1.
  • FIG. 7 shows a further embodiment in which the burn-off protection element 3 a is arranged separately from the outflow pipe 3.
  • a stepwise (here in one step, but there are also two, the or more steps conceivable) enlargement of the inner diameter d2 of the current-carrying element 2 can be provided.
  • Receive Fig. 7 den Switch is only up to the axis of symmetry A, half the inner diameter, as d2 / 2, indicated.
  • FIG. 9 is similar to that in FIG. 8, but shows that the flat contact F does not necessarily have to be substantially radially aligned. It can enclose a clearly different angle ⁇ with an axis running along the coordinate r.
  • the angle ⁇ can, as shown in Fig. 9, be negative, but also positive angle ⁇ are possible.
  • the inner diameter d3 of the Abbrandschides 3a is slightly smaller than the inner diameter d1 of the arcing contact piece 1.
  • the Abbrandterrorismelement 3a extends from that side of the contact surface F, which is mainly the current-carrying element 3 adjacent, except for Side of the contact surface F, to which mainly the arcing contact piece 1 is adjacent.
  • An improved protection against erosion at the contact surface F is achieved.
  • a snap mechanism is realized by the formation of Abbrandtikelement 3a and current-carrying element 2 in the region 2a, which serves the mutual attachment of the two parts together.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Breakers (AREA)
  • Control Of Combustion (AREA)
EP04405796A 2004-12-23 2004-12-23 Disjoncteur à haute puissance avec conducteur pour les courants court-circuits résistant à des arcs électriques Withdrawn EP1675144A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP04405796A EP1675144A1 (fr) 2004-12-23 2004-12-23 Disjoncteur à haute puissance avec conducteur pour les courants court-circuits résistant à des arcs électriques
EP05812736A EP1831906B1 (fr) 2004-12-23 2005-12-14 Disjoncteur presentant une ligne de courant de court-circuit resistant au feu
DE502005009053T DE502005009053D1 (de) 2004-12-23 2005-12-14 Hochleistungsschalter mit abbrandfester kurzschlusstromführung
CN2005800439713A CN101288141B (zh) 2004-12-23 2005-12-14 具有防燃弧的短路电流引导装置的高功率开关
PCT/CH2005/000747 WO2006066426A1 (fr) 2004-12-23 2005-12-14 Disjoncteur presentant une ligne de courant de court-circuit resistant au feu
AT05812736T ATE458258T1 (de) 2004-12-23 2005-12-14 Hochleistungsschalter mit abbrandfester kurzschlusstromführung
JP2007547137A JP2008525945A (ja) 2004-12-23 2005-12-14 耐エロージョン短絡電流経路を備えたヘビーデュ−ティ・サーキット・ブレーカ
US11/812,315 US7595461B2 (en) 2004-12-23 2007-06-18 Heavy-duty circuit breaker with erosion-resistant short-circuit current routing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04405796A EP1675144A1 (fr) 2004-12-23 2004-12-23 Disjoncteur à haute puissance avec conducteur pour les courants court-circuits résistant à des arcs électriques

Publications (1)

Publication Number Publication Date
EP1675144A1 true EP1675144A1 (fr) 2006-06-28

Family

ID=34932422

Family Applications (2)

Application Number Title Priority Date Filing Date
EP04405796A Withdrawn EP1675144A1 (fr) 2004-12-23 2004-12-23 Disjoncteur à haute puissance avec conducteur pour les courants court-circuits résistant à des arcs électriques
EP05812736A Active EP1831906B1 (fr) 2004-12-23 2005-12-14 Disjoncteur presentant une ligne de courant de court-circuit resistant au feu

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP05812736A Active EP1831906B1 (fr) 2004-12-23 2005-12-14 Disjoncteur presentant une ligne de courant de court-circuit resistant au feu

Country Status (7)

Country Link
US (1) US7595461B2 (fr)
EP (2) EP1675144A1 (fr)
JP (1) JP2008525945A (fr)
CN (1) CN101288141B (fr)
AT (1) ATE458258T1 (fr)
DE (1) DE502005009053D1 (fr)
WO (1) WO2006066426A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006031219A1 (de) * 2006-06-30 2008-01-10 Siemens Ag Leistungsschalter mit einem Gehäuse
DE102006034742A1 (de) 2006-07-24 2008-01-31 Siemens Ag Isolierstoffdüse, welche ein erstes Material und ein zweites Material aufweist
EP2180492B1 (fr) * 2008-10-22 2013-12-04 ABB Technology AG Chambre de commutation pour un disjoncteur haute tension et disjoncteur haute tension
DE102009009451A1 (de) 2009-02-13 2010-08-19 Siemens Aktiengesellschaft Schaltgeräteanordnung mit einer Schaltstrecke
US9012800B2 (en) 2010-02-04 2015-04-21 Mitsubishi Electric Corporation Gas circuit breaker
CN103794386A (zh) * 2014-01-15 2014-05-14 北京华东电气股份有限公司 Sf6组合电器的夹板式梅花触头
US10002733B2 (en) * 2016-03-02 2018-06-19 General Electric Technology Gmbh Internal tulip sleeve of the female arcing contact of a high voltage electric circuit breaker
US10026571B1 (en) * 2017-03-31 2018-07-17 General Electric Technology Gmbh Switching chamber for a gas-insulated circuit breaker comprising an optimized thermal channel

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909572A (en) * 1973-08-31 1975-09-30 Hitachi Ltd Circuit breaking section of a gas circuit breaker of the puffer type
US4412115A (en) * 1980-02-28 1983-10-25 Mitsubishi Denki Kabushiki Kaisha Circuit interrupter
US4716266A (en) * 1985-12-03 1987-12-29 Sace S.P.A. Costruzioni Elettromeccaniche Electrical arc quenching chamber, in particular for fluid-quenched circuit breakers
EP0290950A1 (fr) * 1987-05-13 1988-11-17 BBC Brown Boveri AG Disjoncteur à gaz comprimé
US5216214A (en) * 1991-05-23 1993-06-01 Gec Alsthom Sa High- and medium-voltage gas blast circuit breaker
EP0642145A1 (fr) * 1993-09-08 1995-03-08 Gec Alsthom T Et D Sa Contact électrique de type tulipe
EP0932172A2 (fr) * 1998-01-23 1999-07-28 Siemens Aktiengesellschaft Agencement de contact pour un disjoncteur électrique de puissance

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT8420810V0 (it) * 1984-02-10 1984-02-10 Sace Spa Sistema di contatti d'arco per interruttori elettrici, particolarmente a fluido d'estinzione dell'arco.
DE29607660U1 (de) * 1996-04-22 1996-06-20 Siemens Ag Unterbrechereinheit eines Hochspannungs-Leistungsschalters
FR2751782B1 (fr) * 1996-07-23 1998-08-28 Gec Alsthom T & D Sa Disjoncteur a haute tension a auto-soufflage d'arc

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909572A (en) * 1973-08-31 1975-09-30 Hitachi Ltd Circuit breaking section of a gas circuit breaker of the puffer type
US4412115A (en) * 1980-02-28 1983-10-25 Mitsubishi Denki Kabushiki Kaisha Circuit interrupter
US4716266A (en) * 1985-12-03 1987-12-29 Sace S.P.A. Costruzioni Elettromeccaniche Electrical arc quenching chamber, in particular for fluid-quenched circuit breakers
EP0290950A1 (fr) * 1987-05-13 1988-11-17 BBC Brown Boveri AG Disjoncteur à gaz comprimé
US5216214A (en) * 1991-05-23 1993-06-01 Gec Alsthom Sa High- and medium-voltage gas blast circuit breaker
EP0642145A1 (fr) * 1993-09-08 1995-03-08 Gec Alsthom T Et D Sa Contact électrique de type tulipe
EP0932172A2 (fr) * 1998-01-23 1999-07-28 Siemens Aktiengesellschaft Agencement de contact pour un disjoncteur électrique de puissance

Also Published As

Publication number Publication date
WO2006066426A1 (fr) 2006-06-29
DE502005009053D1 (de) 2010-04-01
US7595461B2 (en) 2009-09-29
EP1831906A1 (fr) 2007-09-12
US20080006608A1 (en) 2008-01-10
CN101288141B (zh) 2011-07-27
EP1831906B1 (fr) 2010-02-17
CN101288141A (zh) 2008-10-15
ATE458258T1 (de) 2010-03-15
JP2008525945A (ja) 2008-07-17

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