WO1996020489A1 - Process and circuit arrangement for a commutation and turning-off system of a quick make-and-break - Google Patents
Process and circuit arrangement for a commutation and turning-off system of a quick make-and-break Download PDFInfo
- Publication number
- WO1996020489A1 WO1996020489A1 PCT/EP1995/005070 EP9505070W WO9620489A1 WO 1996020489 A1 WO1996020489 A1 WO 1996020489A1 EP 9505070 W EP9505070 W EP 9505070W WO 9620489 A1 WO9620489 A1 WO 9620489A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- commutation
- quenching
- thyristor
- capacitor
- parallel
- Prior art date
Links
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 and circuit arrangements for a commutation and quenching device for a metallic quick breaker in a rectifier substation for a DC traction power supply.
- the task is to specify a method and to select such circuits that the quenching capacitance is only switched on when an immediate short-circuit load on the capacitor no longer occurs and the commutation and quenching device can also be used for route testing.
- this object is achieved in that a method is specified in which, for the commutation and quenching of a direct current in a rectifier substation for traction current supply, using a quick breaker and a quenching and commutating device at the same time as the switching command for the quick breaker, ignition pulses for the Commutation and bridge valves are triggered in the commutation branch, so that the current commutates into the commutation branch at the beginning of the contact opening and only at a later point in time, when the switching path of the quick breaker is open and there is no longer a short-circuit load on the quenching capacitor, does an extinguishing thyristor ignite is and the quenching of the commutation thyristor takes place by the discharge of the quenching capacitor, so that the commutation current is interrupted and no more current flows from the busbar to the line or vice versa.
- the corresponding controllable valves are ignited in the commutation branch, so that a current flow between the busbar and the route is made possible, and a current transformer measures this current in the route outlet, the size of which represents a measure of the condition of the route.
- the commutation or the test thyristor is quenched by the firing of the quenching thyristor (s) and the discharge of the quenching capacitor, and the current in the commutation branch is thus immediately interrupted.
- 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, to which the quenching branch, consisting of a quenching capacitor, a quenching thyristor and a coupling diode, is connected in parallel.
- 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.
- the rapid interrupter is driven by a separate drive, which receives its energy preferably through a separate electrolytic capacitor.
- the connection between the quenching capacitor and the anode of the coupling diode is connected to the ground.
- FIG. 1 Another 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 rapid breaker, consists of a Griger bridge, in the diagonal branch of which a series circuit consisting of a commutation thyristor, the drive coils for the rapid breaker and a drive capacitor, to which the quenching branch, consisting of an quenching capacitor, a quenching thyristor and a coupling diode, and the test thyristor are connected in parallel.
- a parallel diode is arranged parallel to the drive capacitor and a coil freewheeling diode is connected in parallel to the drive coils.
- a resistor is 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.
- the connection between the quenching capacitor and the anode of the coupling diode is connected to the ground.
- a quenching and charging branch is arranged parallel to this commutation branch according to the principle of the counter-clocking circuit, a first quenching thyristor parallel to the first commutation thyristor, the drive coils and the capacitor and one parallel to the capacitor and the second commutation thyristor is arranged in series with the second quenching thyristor coupling diode.
- a third quenching thyristor is arranged parallel to the first commutation thyristor and the drive coils.
- 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 connected to the ground via a freewheeling diode.
- a resistor is connected in series for each inner short-circuit branch in the commutation branch.
- Fig. 1 commutation and quenching device for quick breaker with separate drive
- Fig. 2 commutation and quenching device for quick breakers with integrated drive and separate drive capacitor
- the exemplary embodiments relate to traction current systems in which the railway earth BE is at minus potential.
- orbital earth is at plus potential, the technical teaching is to be applied analogously.
- FIG. 1 shows an embodiment of the commutation and quenching device, the quick breaker being designed with a separate drive.
- the rapid interrupter SU In the operating state, with the rapid interrupter SU closed, 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 SS busbar.
- the bridge valves 1 to 4 and the commutation thyristor become active 5 ignited over 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 SS busbar 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 there is no one
- the quench thyristor ThI is ignited so that the
- Commutation thyristor Thk is deleted by the voltage of the quenching capacitor C via the coupling diode D and at the same time a post-quenching of the
- Busbar SS becomes zero.
- the commutation branch is switched on by firing the commutation thyristor Thk and the bridge valves 1 to 4.
- the current in the line outlet is measured at the current transformer W, the size of which represents a measure of the state of the line ST. If an impermissibly high current is present, the commutation thyristor Thk is immediately switched off by the firing of the quenching thistor ThI and the discharge of the quenching capacitor C.
- a route test with a conventional resistor can also be implemented with the solution according to the invention in that a test resistor Rp is arranged between the connection points A and B.
- the test resistor Rp is bridged by a contactor S in the operating state of the commutation and quenching device.
- the contactor S is also opened without current in addition to the ignition of the bridge valves 1 to 4 and the commutation thyristor Thk.
- This circuit arrangement is preferably used when the route test is to be carried out conventionally with an existing test resistor.
- the isolating contacts Hs are opened so that there is electrical isolation between busbar SS and line ST.
- the commutation and quenching device can also be used directly on the DC-operated vehicle for switches and contactors.
- 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.
- 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 parallel to 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 coil freewheeling diode Dsp is connected in parallel with the drive coils of the quick breaker SU.
- the commutation branch is switched on by firing the test thyristor Thp.
- the current is measured at the current transformer W, the size of which is a measure of the state of the line ST. If an impermissibly high current is present, the test thyristor Thp is instantly extinguished by the firing of the quench thyristor ThI and the discharge of the quenching capacitor C via the coupling diode D and the test current is switched off.
- a route test with a conventional test resistor is carried out analogously to the embodiment in FIG. 1.
- FIG 3 shows a commutation and quenching device of a rapid interrupter with an integrated drive and use of the quenching capacitor as a drive capacitor.
- the bridge valves 1, 2, 3 are also in this embodiment of the commutation and quenching device , 4 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 Th11, Thl2 are ignited, so that the capacitor C is recharged again.
- the coupling diode D and the two quenching thyristors Thl1, Thl2, the two commutation thyristors Thk1, Thk2 are extinguished and the current flow from the busbar SS to the ST section or from the ST section to the SS busbar becomes zero.
- a test branch is switched on by firing the first quenching thyristor ThM and the second commutation thyristor Thk2, so that a current can flow from the busbar SS to the line ST.
- the current in the line outlet is measured at the current transformer W, the size of which represents a measure of the state of the line ST. If an impermissibly high current is present, then the first quenching thyristor ThM is immediately extinguished by the firing of the third quenching thyristor Thl3 and the discharge of the quenching capacitor C and the test current is switched off.
- a route test with a conventional test resistor is carried out analogously to the embodiment in FIG. 1.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59504293T DE59504293D1 (en) | 1994-12-28 | 1995-12-20 | METHOD AND CIRCUIT FOR A COMMUTING AND ERASING DEVICE OF A FAST INTERRUPT |
EP95942718A EP0800702B1 (en) | 1994-12-28 | 1995-12-20 | Process and circuit arrangement for a commutation and turning-off system of a quick make-and-break |
PL95321014A PL321014A1 (en) | 1994-12-28 | 1995-12-20 | Method of and system for operating a switching equipment and quick-acting disconnector switch |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19944447440 DE4447440C2 (en) | 1994-12-28 | 1994-12-28 | Method and circuit arrangement for a commutation and quenching device of a quick breaker with a separate drive |
DEP4447439.3 | 1994-12-28 | ||
DE19944447439 DE4447439C2 (en) | 1994-12-28 | 1994-12-28 | Method and circuit arrangement for a commutation and quenching device of a quick breaker with integrated drive |
DE19944447441 DE4447441C2 (en) | 1994-12-28 | 1994-12-28 | Method and circuit arrangement for a commutation and quenching device of a rapid breaker |
DEP4447441.5 | 1994-12-28 | ||
DEP4447440.7 | 1994-12-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996020489A1 true WO1996020489A1 (en) | 1996-07-04 |
Family
ID=27207132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1995/005070 WO1996020489A1 (en) | 1994-12-28 | 1995-12-20 | Process and circuit arrangement for a commutation and turning-off system of a quick make-and-break |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0800702B1 (en) |
AT (1) | ATE173559T1 (en) |
CZ (1) | CZ287089B6 (en) |
DE (1) | DE59504293D1 (en) |
PL (1) | PL321014A1 (en) |
WO (1) | WO1996020489A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1206696A (en) * | 1967-08-16 | 1970-09-30 | Telemecanique Electrique | Hybrid contactor |
US4723187A (en) * | 1986-11-10 | 1988-02-02 | General Electric Company | Current commutation circuit |
EP0272349A1 (en) * | 1986-12-22 | 1988-06-29 | S.A. Acec Transport | Ultra-rapid circuit breaker assisted with semi-conductors |
-
1995
- 1995-12-20 WO PCT/EP1995/005070 patent/WO1996020489A1/en active IP Right Grant
- 1995-12-20 DE DE59504293T patent/DE59504293D1/en not_active Expired - Fee Related
- 1995-12-20 EP EP95942718A patent/EP0800702B1/en not_active Expired - Lifetime
- 1995-12-20 CZ CZ19972004A patent/CZ287089B6/en not_active IP Right Cessation
- 1995-12-20 AT AT95942718T patent/ATE173559T1/en not_active IP Right Cessation
- 1995-12-20 PL PL95321014A patent/PL321014A1/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1206696A (en) * | 1967-08-16 | 1970-09-30 | Telemecanique Electrique | Hybrid contactor |
US4723187A (en) * | 1986-11-10 | 1988-02-02 | General Electric Company | Current commutation circuit |
DE3735009A1 (en) * | 1986-11-10 | 1988-05-11 | Gen Electric | CIRCUIT BREAKER |
EP0272349A1 (en) * | 1986-12-22 | 1988-06-29 | S.A. Acec Transport | Ultra-rapid circuit breaker assisted with semi-conductors |
Also Published As
Publication number | Publication date |
---|---|
CZ287089B6 (en) | 2000-09-13 |
PL321014A1 (en) | 1997-11-24 |
ATE173559T1 (en) | 1998-12-15 |
DE59504293D1 (en) | 1998-12-24 |
EP0800702A1 (en) | 1997-10-15 |
CZ9702004A3 (en) | 1998-12-16 |
EP0800702B1 (en) | 1998-11-18 |
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