EP0695458B1 - Schaltvorrichtung - Google Patents
Schaltvorrichtung Download PDFInfo
- Publication number
- EP0695458B1 EP0695458B1 EP95905010A EP95905010A EP0695458B1 EP 0695458 B1 EP0695458 B1 EP 0695458B1 EP 95905010 A EP95905010 A EP 95905010A EP 95905010 A EP95905010 A EP 95905010A EP 0695458 B1 EP0695458 B1 EP 0695458B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- current
- contact
- breaker
- switching device
- electrodes
- 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.)
- Expired - Lifetime
Links
Images
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
- H01H33/666—Operating arrangements
- H01H33/6661—Combination with other type of switch, e.g. for load break 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
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
- H01H33/143—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc of different construction or type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
Definitions
- the invention is based on a switching device according to the preamble of claim 1.
- a switching device is preferred in one High-voltage network used and there is preferably used for switching large currents with high steepness of the recurring voltage.
- the invention relates to a prior art, such as that specified in US 4,087,664 A.
- a switching device for a high-voltage network described in this prior art contains two power connections, between which a compressed gas switch with SF 6 as the extinguishing gas and a vacuum switch are arranged in series.
- the vacuum switch is designed in such a way that it can carry and switch both nominal and short-circuit currents. Such a vacuum switch is therefore very complex.
- the vacuum switch is driven separately and synchronized with the compressed gas switch. Since the vacuum switch has a much smaller stroke than the compressed gas switch, this also results in considerable effort for driving and controlling the vacuum switch.
- the vacuum switch requires a very high contact pressure force in order to prevent premature lifting of its electrodes, which may have flowed through by short-circuit current, in the switched-on state.
- the task is based on a switching device of the type mentioned at the beginning, which with low Effort can be made and operated and still large currents with high steepness to the recurring voltage able to interrupt
- the switching device according to the invention is characterized by practically maintenance-free operation and excellent switching capacity out. Since there are no large ones on the at least one vacuum switch Disconnection power and continuous current load requirements can be put, the inventive Switching device also manufactured extremely inexpensively will.
- the at least one vacuum switch can be one in the Medium voltage technology used in large numbers and therefore be a particularly inexpensive series product. This is because of it conditioned that the at least one vacuum switch shunted to a nominal current path of the pressure gas switch and is therefore included Nominal current operation at most a small fraction of the the switching device leads flowing nominal current. Only above The vacuum switch becomes a certain short-circuit current value the switching device according to the invention in the now short-circuit current leading current path commutates. The one through the Vacuum switch flowing high short-circuit current generates strong electrodynamic forces affecting the electrodes of the vacuum switch drive apart and thus interrupt the short-circuit current.
- a particularly advantageous embodiment of the switching devices according to the invention contains instead of at least one vacuum switch a module with two or more similar, mutually identical vacuum switches connected and aligned in parallel.
- a Such module has the additional advantage that Distribution of the short-circuit current over several small vacuum switches with a low breaking capacity after the switching device the invention can be produced particularly inexpensively.
- To preference is given to using a module with three similar vacuum switches connected in parallel to each other, which are aligned in parallel at the corners of an equilateral Triangles are arranged. With such a module if a low inductance current supply is achieved, the Current to be switched off evenly on the three vacuum switches distributed, and become the ones that drive the electrodes electrodynamic current forces symmetrically on the three Split vacuum switch.
- the switching device shown in Fig. 1 is intended for use in high-voltage networks with voltages of typically 100 and more kV and contains a cylindrical housing 1 filled with SF 6 or another insulating gas with a jacket made of insulating material and with two cover plates, the upper of which as one of two power connections 2, 3 of the switching device is used.
- the upper cover plate carries a sliding contact 4 and has an opening (not designated) through which a switching piece 6, which is displaceable in the direction of the axis of the housing 1 and is contacted by the contact 4, is guided out of the housing 1.
- the switching piece 6 has at its free end facing away from the drive 5 in a coaxial arrangement a hollow erosion contact 7 and a hollow nominal current contact 8 surrounding the erosion contact.
- the lower cover plate of the housing 1 is designed as a disk insulator 9 and carries an erosion contact 10 which is aligned along the axis of the housing 1 and is guided through the disk insulator 9 11 flanged, whereas a metal housing 12 of a module 13 is flanged on the opposite side of the window insulator 9.
- the module 13 contains several, preferably three, axially symmetrical of the same kind distributed around the axis of the housing 12 Vacuum switch 14, only two of which are shown.
- the Vacuum switches are comparatively small and have dimensions each have a relatively low high-voltage switching capacity. Inexpensive series products can therefore be used as vacuum switches 14 are used, such as those produced in large numbers Vacuum tubes for voltages of typically 10 to 40 kV.
- Each of the vacuum switches 14 has a fixed 15 and one movable electrode 16.
- the fixed electrodes 15 of the Vacuum switches 14 are plate-shaped on one side Contact bridge 17 attached.
- the contact bridge 17 carries on the opposite side a hollow contact 18.
- This hollow Contact is in electrically conductive engagement with one is not designated counter contact of the gas pressure switch, which on the end of the erosion contact 7 led out of the housing 1 is provided.
- the movable electrodes 16 of the vacuum switch 14 are rigid by a plate-shaped current collector 19th held and are flexible via the current collector 19 Conductor pieces 20 and a conductive portion of the Module housing 12 with the power connection 3 of the switching device electrically connected.
- the current collector 19 acts Drive system 21, which exclusively from one Vacuum switch 14 flowing through during a switch-off process Short-circuit current is actuated.
- This switching device is in the switched-on state (right part of Fig. 1) rated current predominantly in one Power connection 2, the sliding contact 4, the nominal current contacts 8, 11, flange connection screws 22, the housing 12 and the Power connection 3 comprehensive rated current path. Because of the comparatively high resistance becomes a proportionate low proportion of the nominal current in a parallel to the nominal current path switched extinguishing current path.
- This extinguishing current path comprises the power connection 2, the sliding contact 4, the erosion contacts 7, 10, the hollow contact 18, the contact bridge 17, the Electrodes 15 and 16 of the vacuum switches connected in parallel to one another 14, the current collector 19, the flexible conductor pieces 20, the housing 12 and the power connector 3. Since the vacuum switch practically no nominal current, they can be small be dimensioned.
- the spring constant of the spring 23 and the inertial masses of the Current collector 19, the rigidly connected movable Electrodes 16 and other moving parts of the module 13, such as of the flexible conductor pieces 20 are dimensioned such that in the case of a switch-off process, the electrodes 15, 16 are closed only after the safe interruption of the power to be switched off he follows. As a result, the electrodes 15, 16 are welded together Vacuum switch 14 largely prevented.
- the current commutated into the quenching current path when switched off flows - as illustrated by arrows - in the impact anchor 24 from the two ends to the center and in the busbar 25 in opposite direction from the center outwards into the housing 12. Therefore, one acts against the force on the impact anchor 24 the spring 27 directed electrodynamic force. Above the set limit of the current to be switched off leads the electrodynamic force the impact anchor 24 at high speed against the current collector 19. The impact anchor 24 strikes with great force on the current collector 19 and thus opens the Electrodes 15, 16 against the force of the contact pressure spring 23 suddenly.
- the erosion contact 7 When switching off, the erosion contact 7 is not shown by a Drive guided downwards.
- the current to be switched off commutates into the quenching current path after opening the nominal current path and flows from the burn-off contact 10 led downwards over the hollow contact 18, the contact bridge 17, the closed Electrodes 15, 16, the current collector 19, the flexible conductor pieces 20 and the housing 12 for the power connection 3 (left part from Fig. 5).
- the contact bridge 17 strikes one isolated stop 28 held in the housing 12.
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Gas-Insulated Switchgears (AREA)
Description
- Fig. 1
- eine Aufsicht auf eine im Schnitt dargestellte Ausführungsform einer ersten Schaltvorrichtung nach der Erfindung mit einem mehrere Vakuumschalter enthaltenden Modul,
- Fig.2
- eine Aufsicht auf eine im Schnitt dargestellte erste Ausführungsform des Modul der Schaltvorrichtung gemäss Fig.1,
- Fig.3
- eine Aufsicht auf eine im Schnitt dargestellte zweite Ausführungsform des Moduls der Schaltvorrichtung gemäss Fig.1,
- Fig.4
- eine Aufsicht auf eine im Schnitt dargestellte dritte Ausführungsform des Moduls der Schaltvorrichtung gemäss Fig.1, und
- Fig.5
- eine Aufsicht auf eine im Schnitt dargestellte Ausführungsform einer zweiten Schaltvorrichtung nach der Erfindung mit einem mehrere Vakuumschalter enthaltenden Modul.
- 1
- Gehäuse
- 2, 3
- Stromanschlüsse
- 4
- Gleitkontakt
- 5
- Antrieb
- 6
- Schaltstück
- 7
- Abbrandkontakt
- 8
- Nennstromkontakt
- 9
- Scheibenisolator
- 10
- Abbrandkontakt
- 11
- Nennstromkontakt
- 12
- Gehäuse
- 13
- Modul
- 14
- Vakuumschalter
- 15, 16
- Elektroden
- 17
- Kontaktbrücke
- 18
- Kontakt
- 19
- Stromkollektor
- 20
- Leiterstücke
- 21
- Antriebssystem
- 22
- Flanschverbindungsschrauben
- 23
- Kontaktandruckfeder
- 24
- Schlaganker
- 25
- Stromschiene
- 26
- Leiterstück
- 27
- Feder
Claims (12)
- Vorrichtung zum Schalten von elektrischem Strom, enthaltend einen Druckgasschalter, mindestens einen Vakuumschalter (14) und zwei Stromanschlüsse (2, 3), bei der unter Bildung eines Löschstrompfads ein erster Abbrandkontakt (10) des Druckgasschalters mit einer feststehenden Elektrode (15) des mindestens einen Vakuumschalters (14), ein zweiter Abbrandkontakt (7) des Druckgasschalters mit einem ersten (2) beider Stromanschlüsse (2, 3) und eine bewegliche Elektrode (16) des Vakuumschalters (14) mit einem zweiten (3) beider Stromanschlüsse (2, 3) elektrisch leitend verbunden ist, und bei der beim Ausschalten die beiden Abbrandkontakte (7, 10) des Druckgasschalters durch einen Antrieb (5) längs einer Achse voneinander getrennt werden, dadurch gekennzeichnet, dass die beiden Stromanschlüsse (2, 3) unter Bildung eines parallel zum Löschstrompfad angeordneten Nennstrompfads jeweils mit einem von zwei Nennstromkontakten (8, 11) des Druckgasschalters elektrisch leitend verbunden sind, und dass die beiden Elektroden (15, 16) des mindestens einen Vakuumschalters (14) ohne Verwendung des Antriebs (5) in axialer Richtung voneinander trennbar und mit einer Kontaktandruckkraft beaufschlagt sind, welche unterhalb eines Grenzwertes des beim Ausschalten nach Öffnen der Nennstromkontakte (8, 11) in den Löschstrompfad kommutierten Stroms das Trennen der Elektroden (15, 16) durch elektrodynamische Kräfte verhindert.
- Vorrichtung zum Schalten von elektrischem Strom nach Anspruch 1, dadurch gekennzeichnet, dass der mindestens eine Vakuumschalter (14) in axialer Richtung verschiebbar angeordnet ist.
- Schaltvorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass zwei oder mehr Vakuumschalter (14) parallel zueinander in den Löschstrompfad geschaltet sind.
- Schaltvorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass drei Vakuumschalter (14) vorgesehen sind, welche jeweils auf einer Ecke eines gleichseitigen Dreiecks angeordnet sind.
- Schaltvorrichtung nach einem der Anspruch 3 oder 4, dadurch gekennzeichnet, dass die Vakuumschalter (14) in einem eine Kontaktbrücke (17) und einen Stromkollektor (19) enthaltenden Modul (13) angeordnet sind, dass die feststehenden Elektroden (15) der Vakuumschalter (14) und ein mit einem Gegenkontakt des Druckgasschalters zusammenwirkender Kontakt (18) in elektrisch leitender Weise auf entgegengesetzten Seiten der Kontaktbrücke (17) befestigt sind, und dass die beweglichen Elektroden (16) der Vakuumschalter (16) starr vom Stromkollektor (19) gehalten sind und über den Stromkollektor (19) und mindestens ein flexibles Leiterstück (20) mit dem zweiten Stromanschluss (3) elektrisch leitend verbunden sind.
- Schaltvorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass der Stromkollektor (19) Teil eines vom abzuschaltenden Strom betätigbaren Antriebssystems (21) des Moduls (13) ist.
- Schaltvorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass das Antriebssystem (21) eine auf dem Stromkollektor (19) abgestützte und die beweglichen Elektroden (16) mit KontaktandruckKraft beaufschlagende Feder (23) aufweist.
- Schaltvorrichtung nach einem der Ansprüche 4 bis 7, dadurch gekennzeichnet, dass das Modul (13) an den Druckgasschalter angeflanscht ist.
- Schaltvorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die Federkonstante der Feder (23) und die trägen Massen des Stromkollektors (19), der starr damit verbundenen beweglichen Elektroden (16) sowie weiterer bewegter Teile des Moduls (13) derart bemessen sind, dass bei einem Ausschaltvorgang ein Schliessen der Elektroden (15, 16) erst nach Unterbrechung des abzuschaltenden Stroms erfolgt.
- Schaltvorrichtung nach einem der Ansprüche 8 oder 9, dadurch gekennzeichnet, dass die Kontaktkraftandruckfeder (23) als Spirale oder Schraube ausgebildet ist und im Löschstrompfad zwischen Stromkollektor (19) und zweitem Stromanschluss (3) angeordnet ist.
- Schaltvorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass im Löschstrompfad zwischen Stromkollektor (19) und zweitem Stromanschluss (3) in Serie geschaltet ein beweglicher Schlaganker (24) und eine mit dem Schlaganker (24) zusammenwirkende feststehende Stromschiene (25) angeordnet sind.
- Schaltvorrichtung nach Anspruch 2 und einem der Ansprüche 4 bis 7, dadurch gekennzeichnet, dass der von der Kontaktbrücke gehaltene Kontakt (18) ein Gleitkontakt ist, und dass der mit dem Gleitkontakt zusammenwirkende Gegenkontakt des Druckgasschalters beweglich ausgebildet ist und beim Ausschalten die Vakuumschalter (14) des Moduls (13) solange mitbewegt, bis deren Bewegung durch Aufschlagen auf einen feststehenden Anschlag (28) gehemmt ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4405206A DE4405206A1 (de) | 1994-02-18 | 1994-02-18 | Schaltvorrichtung |
DE4405206 | 1994-02-18 | ||
PCT/CH1995/000010 WO1995022831A1 (de) | 1994-02-18 | 1995-01-16 | Schaltvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0695458A1 EP0695458A1 (de) | 1996-02-07 |
EP0695458B1 true EP0695458B1 (de) | 1998-04-15 |
Family
ID=6510571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95905010A Expired - Lifetime EP0695458B1 (de) | 1994-02-18 | 1995-01-16 | Schaltvorrichtung |
Country Status (6)
Country | Link |
---|---|
US (1) | US5663544A (de) |
EP (1) | EP0695458B1 (de) |
CN (1) | CN1042469C (de) |
CA (1) | CA2160805A1 (de) |
DE (2) | DE4405206A1 (de) |
WO (1) | WO1995022831A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2738389B1 (fr) * | 1995-08-31 | 1997-10-24 | Schneider Electric Sa | Disjoncteur hybrique a haute tension |
DE19958645C5 (de) | 1999-12-06 | 2011-05-26 | Abb Technology Ag | Hybridleistungsschalter |
DE102005032709A1 (de) * | 2005-07-07 | 2007-01-11 | Siemens Ag | Elektrisches Schaltgerät sowie Verfahren zum Betrieb eines elektrischen Schaltgerätes |
DE102006042101B4 (de) * | 2006-09-07 | 2008-09-25 | Switchcraft Europe Gmbh | Vakuumschalter für Mittel- und Hochspannungen |
FR2925976B1 (fr) * | 2008-01-02 | 2010-01-29 | Areva T & D Sa | Disjoncteur a plusieurs chambres de coupure agencees en parallele, a transmission commune et encombrement longitudinal reduit |
JP4568765B2 (ja) * | 2008-01-07 | 2010-10-27 | 株式会社日立製作所 | 真空スイッチギヤ |
ES1076268Y (es) * | 2012-01-25 | 2012-05-22 | Ormazabal Y Cia S L U | Aparamenta electrica de alta tension |
CN105405729B (zh) * | 2015-11-06 | 2017-09-08 | 许继电源有限公司 | 两电极气体开关 |
DE102016218518C5 (de) | 2016-09-27 | 2023-05-11 | Siemens Energy Global GmbH & Co. KG | Kontaktstück für einen Hochspannungs-Leistungsschalter sowie Verfahren zu dessen Herstellung |
DE102017206746A1 (de) * | 2017-04-21 | 2018-10-25 | Siemens Aktiengesellschaft | Anordnung und Verfahren zum parallelen Schalten hoher Ströme in der Hochspannungstechnik |
DE102017216275A1 (de) | 2017-09-14 | 2019-03-14 | Siemens Aktiengesellschaft | Anordnung und Verfahren zum Schalten hoher Ströme in der Hoch-, Mittel- und/oder Niederspannungstechnik |
CN108511261B (zh) * | 2018-03-27 | 2019-08-23 | 西安交通大学 | 一种基于一体化电极结构的直流断路器及其使用方法 |
DE102019204443A1 (de) * | 2019-03-29 | 2020-10-01 | Siemens Aktiengesellschaft | Stromunterbrechersystem |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1143889A (en) * | 1913-03-13 | 1915-06-22 | Alfred Edward Carr | Device for detecting incomplete combustion. |
DE1265815B (de) * | 1965-11-30 | 1968-04-11 | Siemens Ag | Schalteinrichtung fuer Hochspannung |
DE2230900C3 (de) * | 1972-06-23 | 1981-03-12 | Siemens AG, 1000 Berlin und 8000 München | Kurzschließvorrichtung für Generatorableitungen |
US4087664A (en) * | 1975-08-29 | 1978-05-02 | I-T-E Imperial Corporation | Hybrid power circuit breaker |
JPS5537769A (en) * | 1978-09-09 | 1980-03-15 | Tokyo Shibaura Electric Co | High voltage dc breaker |
JPS5736733A (de) * | 1980-08-14 | 1982-02-27 | Tokyo Shibaura Electric Co | |
JPS58181218A (ja) * | 1982-04-19 | 1983-10-22 | 株式会社日立製作所 | 複合型真空しや断器 |
JPS58207802A (ja) * | 1982-05-27 | 1983-12-03 | 株式会社東芝 | ハイブリツド形しや断器 |
JPS6155829A (ja) * | 1984-08-28 | 1986-03-20 | 株式会社東芝 | しや断器 |
DE3611270C2 (de) * | 1986-04-04 | 1995-08-17 | Sachsenwerk Ag | Elektrische Schalteinrichtung für hohe Schaltspannungen |
DE3705719A1 (de) * | 1987-02-23 | 1988-09-01 | Bbc Brown Boveri & Cie | Hochstromschalter |
FR2680911B1 (fr) * | 1991-08-28 | 1995-01-20 | Gec Alsthom Engergie Inc | Sectionneur de terre a pouvoir de coupure. |
FR2682807B1 (fr) * | 1991-10-17 | 1997-01-24 | Merlin Gerin | Disjoncteur electrique a deux cartouches a vide en serie. |
-
1994
- 1994-02-18 DE DE4405206A patent/DE4405206A1/de not_active Withdrawn
-
1995
- 1995-01-16 DE DE59501888T patent/DE59501888D1/de not_active Expired - Fee Related
- 1995-01-16 WO PCT/CH1995/000010 patent/WO1995022831A1/de active IP Right Grant
- 1995-01-16 CA CA002160805A patent/CA2160805A1/en not_active Abandoned
- 1995-01-16 CN CN95190262A patent/CN1042469C/zh not_active Expired - Fee Related
- 1995-01-16 EP EP95905010A patent/EP0695458B1/de not_active Expired - Lifetime
- 1995-01-16 US US08/532,654 patent/US5663544A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE4405206A1 (de) | 1995-08-24 |
EP0695458A1 (de) | 1996-02-07 |
CN1125996A (zh) | 1996-07-03 |
WO1995022831A1 (de) | 1995-08-24 |
CN1042469C (zh) | 1999-03-10 |
CA2160805A1 (en) | 1995-08-24 |
DE59501888D1 (de) | 1998-05-20 |
US5663544A (en) | 1997-09-02 |
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