EP1837889A2 - Ensemble interrupteur avec une résistance de démarrage - Google Patents

Ensemble interrupteur avec une résistance de démarrage Download PDF

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Publication number
EP1837889A2
EP1837889A2 EP07103767A EP07103767A EP1837889A2 EP 1837889 A2 EP1837889 A2 EP 1837889A2 EP 07103767 A EP07103767 A EP 07103767A EP 07103767 A EP07103767 A EP 07103767A EP 1837889 A2 EP1837889 A2 EP 1837889A2
Authority
EP
European Patent Office
Prior art keywords
contact
rated current
auxiliary
switching
switching device
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Withdrawn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
EP07103767A
Other languages
German (de)
English (en)
Other versions
EP1837889A3 (fr
Inventor
Lutz-Rüdiger JÄNICKE
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
Siemens Corp
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 EP1837889A2 publication Critical patent/EP1837889A2/fr
Publication of EP1837889A3 publication Critical patent/EP1837889A3/fr
Withdrawn legal-status Critical Current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
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • H01H33/166—Impedances connected with contacts the impedance being inserted only while closing the switch
    • 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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts

Definitions

  • the present invention relates to a high voltage switching unit having a switching resistance.
  • Such high voltage switches include a rated current switching device having a first rated current contact and a second rated current contact, wherein at least one of the contacts is arranged to be movable relative to the other in a closing direction of the switching unit. Furthermore, they comprise an auxiliary switching device which is electrically parallel to the nominal current switching device and has a switching resistor, a first auxiliary contact and a second auxiliary contact which is electrically connected to the switching resistor. The first auxiliary contact is mechanically coupled to the first rated contact, while the second auxiliary contact is mechanically coupled to the second rated current contact.
  • the switching sequence of the rated current switching device and the auxiliary switching device is such that the auxiliary switching device closes when switching on before the rated current switching device and disconnects before switching off the rated current switching device.
  • Examples of such high voltage switches are in US 4,103,130 and in US 4,421,962 described.
  • US 4,103,130 describes a high-voltage circuit breaker in which the rated current switching device and the auxiliary current switching device are formed with the switching resistor as separate components, which are coupled together via a gear.
  • This embodiment requires a considerable mechanical effort in order to ensure that the auxiliary switching device comprising the switching resistor closes or separates from the rated current switching device.
  • Such an arrangement also takes up a relatively large amount of space.
  • a space saving high power switch is in US 4,421,962 described. There is the switching resistance on the arranged movable contact remote end of the stationary contact of the rated current switching device. It is isolated from the rated current contact and electrically connected to the auxiliary contact. This makes it possible to make the switch more compact than with the in US 4,103,130 described arrangement.
  • the auxiliary contact of the stationary contact unit is upstream of the stationary rated current contact in the direction of the movable contact unit. This closes with the auxiliary contact of the moving contact unit before the rated current contacts of the two units close, thus ensuring that the auxiliary current path closes first.
  • the high-voltage switch described also comprises an arc switching device whose contacts are arranged in the two contact elements such that they close after the contacts of the auxiliary switching device and in front of the contacts of the rated current switching device. In the course of the switching process so closes the arc switching unit before finally closes the rated current switching unit.
  • the auxiliary switching unit When closing the rated current switching unit, the auxiliary switching unit is short-circuited, so that the current now flows through the rated current switching unit.
  • opening the high-voltage switch disconnect first the contacts of the auxiliary switching device, then the contacts of the rated current switching device before finally disconnect the contacts of the arc switching device.
  • a high-voltage switching unit comprises a rated current switching device having a first rated current contact and a second rated current contact, wherein at least one the contacts is arranged to be movable relative to the other in a closing direction. It furthermore comprises an auxiliary switching device connected electrically in parallel with the rated current switching device, with a switching resistor, a first auxiliary contact and a second auxiliary contact electrically connected to the switching resistor. While the first auxiliary contact is coupled to the first rated contact, the second auxiliary contact is coupled to the second rated current contact.
  • the first and the second auxiliary contact consist at least partially of a material resistant to erosion and are arranged relative to one another in such a way that a gap remains between them even in the closed switching state.
  • the first auxiliary contact is upstream of the first nominal contact in the closing direction.
  • the second auxiliary contact is upstream of the second nominal contact in the closing direction.
  • the high-voltage switching unit according to the invention therefore has a simplified construction compared with the switching units used in the prior art.
  • the contacts of the auxiliary switching device can be arranged immovable relative to the contacts of the rated current switching device.
  • the first auxiliary contact can be integrated into the first nominal contact.
  • the second auxiliary contact and the second rated current contact may be separated by a space.
  • the space then forms a receptacle for the first rated current contact in the closed state of the rated current switching device.
  • the first auxiliary contact extends at least partially over that side of the first rated current contact, which faces the second auxiliary contact in the closed state of the rated current switching device. In this way, an extremely space-saving arrangement of the auxiliary contacts in the high-voltage switching device can be realized.
  • the space can also be designed as an annular space, when the second auxiliary contact coaxially surrounds the second rated current contact. In this way, a large contact surface of both the auxiliary contact device and the rated current contact device can be realized.
  • the switching resistor may be arranged spatially parallel, for example, to a nominal current path which is electrically connected to the second rated current contact. In particular, he can surround the nominal current path coaxially.
  • the switching resistor is designed as a separate module. This is at one end of the high voltage switching unit disposed opposite to that end in which a drive means for driving the rated current switching means and the auxiliary switching means is arranged. With both alternatives, compact high-voltage switching units can be realized.
  • the high-voltage switching unit according to the invention may, in addition to the rated current switching device and the auxiliary switching device include an arc switching device which is equipped with a first arcing contact and a second arcing contact, wherein at least one of the two contacts is arranged to be movable relative to the other in the closing direction of the switch.
  • a drive device of the high-voltage switching unit is then configured such that the contact separation in the rated current switching device always takes place before the contact separation in the arc switching unit.
  • the first auxiliary contact and the second auxiliary contact can be arranged in a spatially fixed relationship to the first rated current contact or second rated current contact, can be achieved with this configuration with simple means that both the rated current switching device and the auxiliary switching device always before the arc switching device Disconnect contact.
  • FIG. 1 shows a high-voltage switching unit according to the invention in a schematic longitudinal section.
  • FIGS. 2 to 6 show in highly schematic form various switching positions of the high-voltage switching unit shown in FIG.
  • Fig. 1 is as an embodiment of the high voltage unit according to the invention, a section of a High voltage circuit breaker 1 shown. This comprises a first contact arrangement 3 and a second contact arrangement 5, both of which are arranged in an expansion space 9 bounded by a housing 7. The front side of the expansion space 9 is limited by contact plates, which are not shown in the figure.
  • the first contact arrangement 3 is movably arranged in the expansion space 9 and comprises a first rated current contact 11, a first auxiliary contact 13 and a first arcing contact 15.
  • the first rated current contact 11 is formed as a hollow cylinder.
  • At its second contact arrangement 5 facing the end of the first auxiliary contact 13 is arranged, wherein the second contact arrangement facing end portion 17 of the hollow cylinder is completely formed by the first auxiliary contact 13.
  • the inner side 18 of the hollow cylinder is completely formed by the first rated current contact 11 except for the end portion 17.
  • the first rated current contact 11 has a contact bead 19, which extends in the circumferential direction over the inside 18 of the hollow cylinder.
  • the first auxiliary contact 13 differs from the first rated current contact 11 only in that it is made of a erosion-resistant material. Electrically, the first rated current contact 11 and the first auxiliary contact 13 form one unit.
  • the first arcing contact 15 is arranged in its interior.
  • a quenching gas stream for example a sulfur hexafluoride stream (SF 6 )
  • SF 6 sulfur hexafluoride stream
  • an insulating material nozzle 21 is present. This forms a first arc contact 15 in the direction of the second contact arrangement 5 upstream arc chamber 23rd
  • the second contact arrangement 5 comprises a second rated current contact 25, a second auxiliary contact 27 and a second arcing contact 29, while the second rated current contact 25 and the second auxiliary contact 27 are formed as stationary in the expansion chamber 9 arranged hollow cylinder, the second arcing contact 29 as in the axial direction A displaceable Pin (pin) formed.
  • an annular space 33 Between the second rated current contact 25 and the second auxiliary contact 27 is an annular space 33, which forms a receptacle for the first rated current contact 11 and the first auxiliary contact 13.
  • the end portion 31 and an adjoining portion 32 of the inner surface 34 of the second auxiliary contact 27 forming hollow cylinder is made of a erosion-resistant material.
  • the section 32 extends approximately to half the material thickness through the cylinder wall.
  • the high-voltage power switch 1 includes a turn-on resistance as another component. This may, for example, axially connect to the second contact arrangement 5, wherein it is electrically conductively connected to the second auxiliary contact 27 and is connected in parallel to the second rated current contact 25.
  • the on-resistance can also be integrated into the cylinder of the second auxiliary contact 27, as shown in FIG.
  • the arrangement of the second rated current contact 25, the second auxiliary contact 27 and the second arc contact 29 in the second contact arrangement is such that the second rated current contact 25 projects in the direction of the first contact arrangement 3 via the second arcing contact 29, while the second auxiliary contact 27 via the second Rated current contact 25 protrudes.
  • the cylinder forming the first rated current contact 11 and the first auxiliary contact 13 projects in the direction of the second contact arrangement 5 via the first arcing contact 15.
  • Figures 2 to 6 show the high-voltage circuit breaker described with reference to FIG. 1 in different Switching states.
  • Fig. 2 shows the switch in the switch position "off”
  • Fig. 3 in the switch position "pre-flashover”
  • Fig. 4 in the switch position "contact input rated current system”
  • Fig. 5 in the switch position "on”
  • Fig. 6 in the Switch position "Contact separation rated current system and on-resistance”.
  • the second arcing contact 29 moves in the direction of the first contact arrangement 3, driven by a drive mechanism (not shown). In this way, it is in the switching position "on", which is shown in Fig. 5, via the second auxiliary contact 27 and via the second rated current contact 25 before. This position is maintained during the switch-off process at least until the switching position "contact separation rated current system and on-resistance" (Fig. 6) takes place. In this way, the metallic contact between the first arcing contact 15 and the second arcing contact 29 is separated after the metallic contact between the first rated current contact 11 and the second rated current contact 25.
  • the first auxiliary contact 13 and the second auxiliary contact 27 are already far enough away from each other that the disconnecting arc only between the two arcing contacts 15, 29, but not between the auxiliary contacts 13, 27 trains. To extinguish the arc this is then blown in the arc chamber 23 with quenching gas. In the course of the switch-off, the second arc contact 29 is then withdrawn, so that it is completely in the cylinder volume enclosed by the first rated current contact 25.
  • the number of components can be reduced in comparison to the prior art, whereby a cost reduction in the production can be achieved.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
EP07103767A 2006-03-24 2007-03-08 Ensemble interrupteur avec une résistance de démarrage Withdrawn EP1837889A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610014286 DE102006014286A1 (de) 2006-03-24 2006-03-24 Unterbrechereinheit mit Einschaltwiderstand

Publications (2)

Publication Number Publication Date
EP1837889A2 true EP1837889A2 (fr) 2007-09-26
EP1837889A3 EP1837889A3 (fr) 2007-11-28

Family

ID=38110014

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07103767A Withdrawn EP1837889A3 (fr) 2006-03-24 2007-03-08 Ensemble interrupteur avec une résistance de démarrage

Country Status (2)

Country Link
EP (1) EP1837889A3 (fr)
DE (1) DE102006014286A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2309526A1 (fr) * 2009-10-08 2011-04-13 ABB Technology AG Commutateur de puissance avec des branches de courant nominal parallèles
EP2909849B1 (fr) 2012-10-19 2016-12-07 General Electric Technology GmbH Dispositif d'établissement et/ou de coupure de courant à contacts permanents à usure réduite

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3697712A (en) * 1971-01-07 1972-10-10 S & C Electric Co High voltage switch with preinsertion resistor connected in the circuit through graphite corona balls
DE3411445A1 (de) * 1984-02-06 1985-08-08 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Hochspannungsschalter
FR2676587B1 (fr) * 1991-05-17 1994-06-10 Alsthom Gec Disjoncteur a grand pouvoir de coupure.
FR2748597B1 (fr) * 1996-05-13 1998-06-12 Gec Alsthom T & D Sa Disjoncteur a haute tension avec insertion de resistance a la fermeture

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2309526A1 (fr) * 2009-10-08 2011-04-13 ABB Technology AG Commutateur de puissance avec des branches de courant nominal parallèles
JP2011082168A (ja) * 2009-10-08 2011-04-21 Abb Technology Ag 並列の定格電流経路を備えたサーキット・ブレーカ
CN102034640A (zh) * 2009-10-08 2011-04-27 Abb技术有限公司 具有并联额定电流路径的功率开关
US8901447B2 (en) 2009-10-08 2014-12-02 Abb Technology Ag Circuit breaker with parallel rated current paths
EP2909849B1 (fr) 2012-10-19 2016-12-07 General Electric Technology GmbH Dispositif d'établissement et/ou de coupure de courant à contacts permanents à usure réduite
US10186389B2 (en) 2012-10-19 2019-01-22 Alstom Technology Ltd Current connection and/or cut-off device comprising permanent contacts with reduced wear

Also Published As

Publication number Publication date
EP1837889A3 (fr) 2007-11-28
DE102006014286A1 (de) 2007-10-11

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