EP0800702B1 - Procede et circuiterie pour systeme de commutation et de blocage d'un interrupteur a grande vitesse - Google Patents

Procede et circuiterie pour systeme de commutation et de blocage d'un interrupteur a grande vitesse Download PDF

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Publication number
EP0800702B1
EP0800702B1 EP95942718A EP95942718A EP0800702B1 EP 0800702 B1 EP0800702 B1 EP 0800702B1 EP 95942718 A EP95942718 A EP 95942718A EP 95942718 A EP95942718 A EP 95942718A EP 0800702 B1 EP0800702 B1 EP 0800702B1
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EP
European Patent Office
Prior art keywords
commuting
discharge
thyristor
thyristors
parallel
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
Application number
EP95942718A
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German (de)
English (en)
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EP0800702A1 (fr
Inventor
Horst Gerlach
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.)
ELPRO BAHNSTROMANLAGEN GMBH
Original Assignee
Elpro BahnstromAnlagen GmbH
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
Priority claimed from DE19944447440 external-priority patent/DE4447440C2/de
Priority claimed from DE19944447441 external-priority patent/DE4447441C2/de
Priority claimed from DE19944447439 external-priority patent/DE4447439C2/de
Application filed by Elpro BahnstromAnlagen GmbH filed Critical Elpro BahnstromAnlagen GmbH
Publication of EP0800702A1 publication Critical patent/EP0800702A1/fr
Application granted granted Critical
Publication of EP0800702B1 publication Critical patent/EP0800702B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • H01H9/541—Contacts shunted by semiconductor devices
    • H01H9/542—Contacts shunted by static switch 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
    • H01H33/02—Details
    • H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
    • H01H33/596—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle for interrupting dc

Definitions

  • the invention relates to a method according to the preamble of claim 1 and circuit arrangements according to the preamble of claims 2 to 4 for a commutation and extinguishing device for a metallic rapid breaker in one Rectifier substation for a DC traction power supply.
  • Hybrid switches are known, such as are described in DE-A-3 735 009 or in EP-A-0 184 566, the disadvantage of which is that the capacitor used, both in the switching state, is both drive and Extinguishing capacitor and the capacitance is short-circuited by the bridge circuit (both current directions for the metallic contact).
  • GB-A-1 206 696 (closest prior art) describes a hybrid switch in which firing pulses for the commutation thyristor or shunt thyristor are output at the same time as the switching command for the quick breaker, so that the current commutates from the switching path into the commutation branch . Only at a later point in time, when the switching path is open, are quenching thyristors fired, so that the voltage of the quenching capacitor blocks the commutation thyristor and the commutation current is extinguished.
  • the task is to specify a method and such circuits choose that the extinguishing capacity is only switched on when an immediate Short-circuit load of the capacitor no longer occurs, the entire charge of the Capacitor for quenching the commutation current is available and the commutation and quenching device is also used for route testing can be.
  • this object is based on the prior art according to GB-A-1 206 696 solved by the characterizing features of claim 1.
  • the corresponding controllable valves in the Commutation branch ignited, so that a current flow between the busbar and the route is made possible and by a current transformer this current measured in the line outlet, the size of which is a measure of the State of the route.
  • a circuit arrangement according to the invention of a commutation and quenching device in a rectifier substation for traction current supply which is arranged in parallel with a quick breaker, which has a separate drive, consists of a Grford bridge made of controllable bridge valves, in the diagonal branch of which a commutation thyristor is arranged which the quenching branch, consisting of an quenching capacitor, a quenching thyristor and a coupling diode, is connected in parallel.
  • this can be arranged in the commutation branch between the cathode of the coupling diode and the anode of a bridge valve and can be short-circuited by a contactor in the operating state.
  • the rapid interrupter is driven by a separate drive, which receives its energy preferably from a separate electrolytic capacitor.
  • the connection between the quenching capacitor and the anode of the coupling diode can be connected to the ground in order to ensure that the quenching capacitor is recharged in the event of an empty shutdown.
  • a further circuit arrangement according to the invention is defined in claim 3.
  • a resistor can be connected in series for each current direction in the commutation branch. To carry out distance tests with a conventional test resistor, this is arranged in the commutation branch between the cathode of the coupling diode and the anode of a bridge valve and short-circuited in the operating state by a contactor. To ensure that the quenching capacitor is recharged in the event of an empty shutdown, the connection between the quenching capacitor and the anode of the coupling diode is preferably connected to the ground.
  • a third circuit arrangement according to the invention is defined in claim 4.
  • the connection point between the cathodes of the second quenching thyristor and the second commutation thyristor and the anodes of the third and fourth bridge valve is preferably connected to the ground via a free-wheeling diode.
  • a resistor can be connected in series for each inner short-circuit branch in the commutation branch. Further advantageous embodiments of the invention can be found in the subclaims.
  • the exemplary embodiments relate to traction current systems in which the railway earth BE is at minus potential.
  • railway earth lies If the potential is positive, the technical teaching is to be applied analogously.
  • the rapid interrupter being designed with a separate drive.
  • a current flows from the busbar SS to the ST section or as reverse current in the opposite direction from the ST section to the busbar SS.
  • the bridge valves 1 to 4 and the commutation thyristor become active Thk ignited for a certain period of time.
  • the rapid interrupter SU has a separate drive with its own energy supply, e.g. B. an electrolytic capacitor. So that the energy of the quenching capacitor C is used exclusively for quenching the commutation thyristor Thk.
  • the current commutates when the contact of the quick breaker SU opens via the isolating contacts Hs via the bridge valves 1, 3 and Thk from the busbar SS to the ST section or from the ST section to the busbar SS via the bridge valves 2, 4 and Thk. Since there are no further ignition pulses, the other two bridge valves 2 and 4 or 1 and 3 block, so that no current flows through them.
  • the quenching thyristor Thl is ignited, so that the commutation thyristor Thk is quenched by the voltage of the quenching capacitor C via the coupling diode D and at the same time there is an after-quenching of the switching path of the quick breaker SU and thus the current flow from the busbar SS to the path ST or from line ST to busbar SS becomes zero. If there is an empty shutdown, the quenching capacitor C is reloaded via the connection to the rail ground BE.
  • the commutation branch is triggered by igniting the Commutation thyristor Thk and the bridge valves 1 to 4 turned on.
  • the Current transformer W the current in the line outlet is measured, its size Represents measure of the state of the route ST. Should an impermissibly high current are present, then the commutation thyristor Thk by igniting the Quenching thistor Thl and the discharge of the quenching capacitor C instantaneously switched off.
  • a route test with a conventional resistor can be done with the also implement the solution according to the invention by between the connection points A and B a test resistor Rp is arranged.
  • the test resistor Rp is in the operating state of the commutation and quenching device by a Contactor S bridges.
  • This circuit arrangement will preferably applied when the route test with an existing one Test resistance should be carried out conventionally.
  • the commutation and quenching device can also be operated directly on the DC Vehicle can be applied to switches and contactors.
  • FIG. 2 describes a commutation and quenching device for a quick breaker with an integrated drive and a separate drive capacitor.
  • the bridge valves 1, 2, 3, 4 are designed as diodes, since the ohmic resistors R1 and R2 arranged in the bridge branches prevent a short-circuit load on the quenching capacitor C.
  • a current flows from the busbar SS to the line ST or as reverse current in the opposite direction from the line ST to the busbar SS.
  • the drive capacitor Ca discharges, so that the drive coils open the quick breaker.
  • the commutation thyristor Thk is ignited for a certain period of time.
  • the current commutates when the contact of the quick breaker SU is opened via the isolating contacts Hs, the bridge valves 1, 3 and the commutation thyristor Thk from the busbar SS to the section ST or from the section ST to the busbar SS via the bridge valves 2, 4 and the commutation thyristor Thk.
  • a parallel diode Dp is arranged in parallel with the drive capacitor Ca, which is preferably an electrolytic capacitor, so that a commutation current which has not yet been quenched can flow for a sufficiently long time.
  • a freewheeling diode Dsp is connected in parallel with the drive coils of the quick breaker SU.
  • the quenching thyristor Thl is ignited, so that the commutation thyristor Thk is quenched by the voltage of the quenching capacitor C via the coupling diode D and the current flow from the busbar SS to the ST line or from the ST line to the busbar SS becomes zero. If there is an empty shutdown, the quenching capacitor C is reloaded via the connection to the rail ground BE.
  • the commutation branch is triggered by igniting the Test thyristor Thp switched on.
  • the current is measured at the current transformer W, the size of which is a measure of the state of the line ST.
  • the test thyristor Thp is triggered by the ignition of the Quenching thyristor Thl and the discharge of the quenching capacitor C via the coupling diode D immediately deleted and the test current switched off.
  • FIG. 3 describes a commutation and quenching device of a rapid breaker with an integrated drive and use of the quenching capacitor as a drive capacitor.
  • a current flows from the busbar SS to the line ST or as reverse current in the opposite direction from the line ST to the busbar SS.
  • the bridge valves 1, 2, 3, 4 are also in this embodiment of the commutation and quenching device designed as diodes, since in this case the inductors L1 and L2 arranged in the bridge branches as current limiting chokes prevent a short-circuit load on the quenching capacitor C.
  • the capacitor C discharges, so that the drive coils open the quick breaker SU.
  • the commutation thyristors Thk1 and Thk2 are fired for a certain period of time.
  • the current commutates when the contact of the quick breaker SU opens via the isolating contacts Hs, the bridge valves 1, 3, the commutation thyristors Thk1 and Thk2 and the capacitor C from the busbar SS to the ST section or from the ST section to the SS busbar via the bridge valves 2, 4, the current limiting chokes L1, L2 and the commutation thyristors Thk1, Thk2 and the capacitor C.
  • a coupling diode D is connected in parallel with the drive coils of the quick breaker SU.
  • the quenching thyristors Thl1, Thl2 are ignited, so that the capacitor C reloaded.
  • the coupling diode D and the two quenching thyristors Thl1, Thl2 the two commutation thyristors Thk1, Thk2 deleted and the current flow from the busbar SS to route ST or from route ST to busbar SS becomes zero.
  • a test branch is created by igniting the first Quenching thyristor Thl1 and the second commutation thyristor Thk2 switched on, so that a current flows from the busbar SS to the route ST can.
  • the current in the line outlet is measured Size represents a measure of the state of the route ST. Should be an inadmissible high current, then the first quench thyristor Thl1 by ignition of the third quenching thistor Thl3 and the discharge of the quenching capacitor C immediately deleted and the test current switched off.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Selective Calling Equipment (AREA)
  • Power Conversion In General (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Claims (11)

  1. Procédé pour la commutation et le blocage d'un courant continu en employant un interrupteur à grande vitesse et d'un système de commutation et de blocage disposé parallèlement à la section commutable de l'interrupteur à grande vitesse, une impulsion d'ignition étant instantanément délivrée pour des thyristors de commutation (Thk) en même temps que l'instruction de commutation pour l'interrupteur à grande vitesse (SU) de telle sorte que le courant, de la section commutable de l'interrupteur à grande vitesse, commute dans la branche de commutation, au début de l'intervalle de coupure, et des thyristors de blocage ne sont mis en circuit qu'à un moment ultérieur lorsque la section commutable de l'interrupteur à grande vitesse est ouverte, caractérisé en ce que des vannes à pont (1, 2, 3, 4) sont disposées dans la branche de commutation, les dites vannes à pont qui sont mis en circuit instantanément en même temps que les thyristors de commutation (Thk) afin de permettre la commutation, et qui bloquent de nouveau s'ils ne sont plus parcourus par le courant de commutation, et en ce que des thyristors de blocage ne sont mis en circuit que s'il n'y a plus de puissance de court-circuit pour un condensateur de blocage (C) de telle sorte que la tension du condensateur de blocage (C) bloque les thyristors de commutation (Thk) via une diode d'accouplement (D) et le courant de commutation s'éteint.
  2. Circuiterie pour un système de commutation et de blocage dans une sous-station de redressement destinée à l'alimentation des voies en courant avec un système de commutation et de blocage disposé parallèlement à un interrupteur à grande vitesse pour l'exécution du procédé selon la revendication 1, l'interrupteur à grande vitesse étant exécuté avec un entraínement séparé, caractérisée en ce que le système de commutation se compose d'un pont de Grätz avec des vannes à pont pilotables (1, 2, 3, 4) dans la branche diagonale duquel sont disposés un thyristor de commutation (Thk) et, parallèlement au thyristor de commutation (Thk), une branche de blocage composée d'un condensateur de blocage (C), d'un thyristor de blocage (Thl) et d'une diode d'accouplement (D).
  3. Circuiterie pour un système de commutation et de blocage dans une sous-station de redressement destinée à l'alimentation des voies en courant avec un système de commutation et de blocage disposé parallèlement à un interrupteur à grande vitesse pour l'exécution du procédé selon la revendication 1, l'interrupteur à grande vitesse étant exécuté avec un entraínement intégré, caractérisée en ce que le système de commutation se compose d'un pont de Grätz avec des vannes à pont pilotables (1, 2, 3, 4) dans la branche diagonale duquel sont disposés un thyristor de commutation (Thk), un condensateur d'entraínement (Ca) avec une diode parallèle (Dp) disposée parallèlement, et les bobines d'entraínement pour l'interrupteur à grande vitesse (SU) avec une diode de roule libre de bobine (Dsp), parallèlement auquel sont disposés premièrement la branche de blocage, composée d'un condensateur de blocage (C), d'un thyristor de blocage (Thl) et d'une diode d'accouplement (D), et deuxièmement un thyristor de contrôle (Thp).
  4. Circuiterie pour un système de commutation et de blocage dans une sous-station de redressement destinée à l'alimentation des voies en courant avec un système de commutation et de blocage disposé parallèlement à un interrupteur à grande vitesse pour l'exécution du procédé selon la revendication 1, l'interrupteur à grande vitesse étant exécuté avec un entraínement intégré, caractérisée en ce que le système de commutation se compose d'un pont de Grätz avec des vannes à pont pilotables (1, 2, 3, 4) dans la branche diagonale duquel sont disposés deux thyristors de commutation (Thk1, Thk2), un condensateur (C) et les bobines d'entraínement pour l'interrupteur à grande vitesse (SU) auquel sont disposés parallèlement, premièrement la branche de blocage et de chargement, selon le principe du montage symétrique, un premier thyristor de blocage (Thl1) étant d'une part disposé parallèlement au premier thyristor de commutation (Thk1), aux bobines d'entraínement et au condensateur (C) et une diode d'accouplement se trouvant en série avec un deuxième thyristor de blocage (thl2) étant d'autre part disposée parallèlement au condensateur (C) et au deuxième thyristor de commutation (Thk2), et deuxièmement un troisième thyristor de blocage (Thl3) parallèlement au premier thyristor de commutation (Thk1) et aux bobines d'entraínement.
  5. Circuiterie selon la revendication 3 ou 4, caractérisée en ce que les vannes à pont (1, 2, 3, 4) sont des diodes.
  6. Circuiterie selon la revendication 2, 3 ou 4, caractérisée en ce qu'une résistance de contrôle (Rp) est disposée dans la branche diagonale du pont de Grätz et est court-circuitée en état d'exploitation par un contact (S) d'un contacteur.
  7. Circuiterie selon la revendication 2 ou 3, caractérisée en ce que la liaison entre le condensateur de blocage (C) et l'anode de la diode d'accouplement (D) est reliée avec la terre de voie (BE).
  8. Circuiterie selon la revendication 2, 3 ou 4, caractérisée en ce que le système de commutation et de blocage est relié galvaniquement avec la section commutable via les contacts (HS) d'un sectionneur auxiliaire.
  9. Circuiterie selon la revendication 3 ou 4, caractérisée en ce que des résistances (R1, R2) sont disposés en série avec les vannes à pont (2, 4) pour limiter les courants de court-circuit internes.
  10. Circuiterie selon la revendication 3 ou 4, caractérisée en ce que des inductivités (L1, L2) sont disposées en série avec les vannes à pont (2, 4) pour limiter les courants de court-circuit internes.
  11. Circuiterie selon la revendication 4, caractérisée en ce que le point de liaison entre les cathodes du deuxième thyristor de blocage (Thl2) et du deuxième thyristor de commutation (Thk2) et les anodes des vannes à pont (3, 4) est relié à la terre de voie (BE) via une diode de roule libre (Df).
EP95942718A 1994-12-28 1995-12-20 Procede et circuiterie pour systeme de commutation et de blocage d'un interrupteur a grande vitesse Expired - Lifetime EP0800702B1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
DE4447439 1994-12-28
DE4447441 1994-12-28
DE19944447440 DE4447440C2 (de) 1994-12-28 1994-12-28 Verfahren und Schaltungsanordnung für eine Kommutierungs- und Löscheinrichtung eines Schnellunterbrechers mit separatem Antrieb
DE19944447441 DE4447441C2 (de) 1994-12-28 1994-12-28 Verfahren und Schaltungsanordnung für eine Kommutierungs- und Löscheinrichtung eines Schnellunterbrechers
DE19944447439 DE4447439C2 (de) 1994-12-28 1994-12-28 Verfahren und Schaltungsanordnung für eine Kommutierungs- und Löscheinrichtug eines Schnellunterbrechers mit integriertem Antrieb
DE4447440 1994-12-28
PCT/EP1995/005070 WO1996020489A1 (fr) 1994-12-28 1995-12-20 Procede et circuiterie pour systeme de commutation et de blocage d'un interrupteur a grande vitesse

Publications (2)

Publication Number Publication Date
EP0800702A1 EP0800702A1 (fr) 1997-10-15
EP0800702B1 true EP0800702B1 (fr) 1998-11-18

Family

ID=27207132

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95942718A Expired - Lifetime EP0800702B1 (fr) 1994-12-28 1995-12-20 Procede et circuiterie pour systeme de commutation et de blocage d'un interrupteur a grande vitesse

Country Status (6)

Country Link
EP (1) EP0800702B1 (fr)
AT (1) ATE173559T1 (fr)
CZ (1) CZ287089B6 (fr)
DE (1) DE59504293D1 (fr)
PL (1) PL321014A1 (fr)
WO (1) WO1996020489A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1540464A (fr) * 1967-08-16 1968-09-27 Telemecanique Electrique Contacteur hybride comportant la détection des fronts d'établissement de la tension aux bornes du pôle mécanique
US4723187A (en) * 1986-11-10 1988-02-02 General Electric Company Current commutation circuit
EP0272349B1 (fr) * 1986-12-22 1993-05-19 S.A. Acec Transport Disjoncteur hyper rapide assisté par semi-conducteurs

Also Published As

Publication number Publication date
CZ287089B6 (en) 2000-09-13
EP0800702A1 (fr) 1997-10-15
ATE173559T1 (de) 1998-12-15
CZ9702004A3 (cs) 1998-12-16
DE59504293D1 (de) 1998-12-24
PL321014A1 (en) 1997-11-24
WO1996020489A1 (fr) 1996-07-04

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