EP1102295A2 - Commutation type direct-current breaker - Google Patents
Commutation type direct-current breaker Download PDFInfo
- Publication number
- EP1102295A2 EP1102295A2 EP00123740A EP00123740A EP1102295A2 EP 1102295 A2 EP1102295 A2 EP 1102295A2 EP 00123740 A EP00123740 A EP 00123740A EP 00123740 A EP00123740 A EP 00123740A EP 1102295 A2 EP1102295 A2 EP 1102295A2
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- EP
- European Patent Office
- Prior art keywords
- main switch
- switch
- capacitor
- current
- direct
- 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.)
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Classifications
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- 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 present invention relates to a commutation type direct-current breaker, and particularly to a circuit configuration of a commutation type direct-current breaker that includes two pairs of main and auxiliary switches and two capacitors having different capacitance values, in which a commutating circuit corresponding to the kind of current to be interrupted can be chosen from two systems by selecting switch conditions for the two pairs of main and auxiliary switches.
- Japanese Patent Laid-open No. Hei 8-148066 discloses a commutation type direct-current breaker having a commutating circuit configuration that includes two capacitors having different capacitance values connected in parallel with each other in a commutating circuit of the commutation type direct-current breaker so that the magnitude of commutating current can be selected.
- the circuit configuration according to the prior art mentioned above allows a circuit on the load side and the two capacitors having different capacitance values to remain connected with each other. This may constitute a hazard because a capacitor charging voltage remains applied to the circuit on the load side even when the breaker is opened.
- a main contact, a first switch, and a second switch are each controlled independently, and therefore it is necessary to control three systems.
- An object of the present invention is to provide a commutation type direct-current breaker having a circuit configuration that prevents a hazard when the breaker is opened and also reduces the number of systems to be supplied with an instruction for switch opening or closing to two.
- a first main switch and a second main switch inserted in series into a direct-current circuit that connects a direct-current power supply with a load; a series circuit having a first auxiliary switch, a first capacitor and a reactor which are connected in parallel with the first main switch; a series circuit having a second auxiliary switch and a second capacitor which are connected in parallel with the first capacitor; and a control unit for controlling opening and closing operations of the first main switch and the second main switch.
- the first main switch and the first auxiliary switch are in switch states different from each other, the first auxiliary switch being closed after the first main switch opens. Also, the second main switch and the second auxiliary switch are in the same switch state, the second auxiliary switch being opened before the second main switch opens.
- the ratio between the capacitance of the first capacitor and that of the second capacitor is set to be in a range of 1:0.25 to 1:18.
- n capacitors (where n is an integer in a range of 1 ⁇ n ⁇ 18) each having the same capacitance as the first capacitor and connected in parallel with one another are used as a second capacitor.
- Fig. 1 is a circuit diagram of a commutation type direct-current breaker according to a first embodiment of the present invention
- Fig. 2 is a circuit diagram of a commutation type direct-current breaker according to a second embodiment of the present invention
- Fig. 3 is a circuit diagram of a commutation type direct-current breaker according to a third embodiment of the present invention.
- Fig. 4 is a circuit diagram of a commutation type direct-current breaker according to a fourth embodiment of the present invention.
- Reference numeral 1 denotes a direct-current power supply which, in a typical direct-current feeder circuit, supplies a positive pole voltage of 1500 V.
- Reference numeral 2 denotes a load of a direct-current electric car or the like.
- Reference numeral 3 denotes a feeder line that supplies electricity to the load.
- Reference numeral 4 denotes a return wire that connects the load 2 to the direct-current power supply 1.
- Reference numeral 5 denotes a commutation type direct-current breaker inserted at an intermediate point of the feeder line 3 to perform switching of a current supplied from the direct-current power supply 1 to the load 2.
- the commutation type direct-current breaker 5 comprises a control unit 50, a first main switch 51, a second main switch 52, a first auxiliary switch 53, a second auxiliary switch 54, a first capacitor 55, a second capacitor 56, a reactor 57, a current transformer 58, and an overcurrent tripping device 59.
- the first main switch 51 and the second main switch 52 are inserted in the feeder line 3 in series, and the first main switch 51 is disposed on the side of the direct-current power supply 1 while the second main switch 52 is disposed on the load 2 side.
- a series circuit of the first auxiliary switch 53, the first capacitor 55, and the reactor 57 is connected in parallel with the first main switch 51, while a series circuit of the second auxiliary switch 54 and the second capacitor 56 is connected in parallel with the first capacitor 55.
- the current transformer 58 is placed on the feeder line 3 to detect a current flowing through the feeder line 3 and thereby input a current value to the overcurrent tripping device 59.
- the overcurrent tripping device 59 is provided with a value set for automatic breaking, and outputs an instruction 11 for switch opening when a value of the current flowing through the feeder line 3 exceeds the value set for automatic breaking.
- the control unit 50 receives an external instruction 10 or an instruction 11 for switch opening from the overcurrent tripping device 59, and thereby provides an instruction for switch opening only to the first main switch 51 and the second main switch 52.
- the first auxiliary switch 53 operates in interlocked relation with the first main switch 51. Specifically, the first auxiliary switch 53 closes with a delay of a time t1 (for example 2 ms) after the first main switch 51 opens.
- the second auxiliary switch 54 operates in interlocked relation with the second main switch 52. Specifically, the second auxiliary switch 54 opens a time t2 (for example 2.5 ms) before the second main switch 52 opens.
- the first main switch 51 and the second main switch 52 are closed. Under this condition, a direct current with a voltage of 1500 V is applied to the load 2, and thereby the load 2 becomes operable.
- the first auxiliary switch 53 which is in an switch state opposite from that of the first main switch 51, is open, while the second auxiliary switch 54, which is in the same switch state as that of the second main switch 52, is closed.
- the first capacitor 55 and the second capacitor 56 are charged in advance at +2000 V with respect to the direct-current power supply 1 side.
- a very large, fast rising fault current which is determined by a circuit constant, flows through the feeder line 3.
- the circuit constant represents a circuit resistance of 15 m ⁇ and a circuit inductance of 150 ⁇ H, for example, the maximum value reached is 100 kA, and the maximum rush rate is 10 kA/ms.
- the fault current needs to be interrupted very rapidly in order to minimize adverse effects of the overcurrent on the apparatus.
- the current transformer 58 first detects a fault current value and then inputs the fault current value to the overcurrent tripping device 59.
- the overcurrent tripping device 59 sends an instruction 11 for switch opening to the control unit 50 at the moment when the fault current value reaches 12000 A.
- the control unit 50 first opens the first main switch 51.
- the first auxiliary switch 53 closes with a delay of a time t1 (for example 2 ms) after the opening of the first main switch 51. This results in formation of an LC resonance circuit including the first capacitor 55, the second capacitor 56, the reactor 57, the first main switch 51, the first auxiliary switch 53, and the second auxiliary switch 54.
- the first capacitor 55 and the second capacitor 56 which have been charged in advance, discharge to feed a commutating current in an opposite direction from that of the fault current into the first main switch 51.
- the capacitance of the first capacitor 55 is set at 600 ⁇ F and the capacitance of the second capacitor 56 is set at 1200 ⁇ F
- the maximum commutating current value in the opposite direction is 40 kA.
- the control unit 50 opens the second main switch 52 after a delay of a time t3 (for example 12 ms).
- the second auxiliary switch 54 opens a time t2 (for example 2.5 ms) before the opening of the second main switch 52.
- the second auxiliary switch 54 will not open before the closing of the first auxiliary switch 53. Therefore, it is possible for the second capacitor 56 to discharge together with the first capacitor 55, thereby allowing a large fault current as described above to be interrupted.
- the second main switch 52 completes circuit breaking when the first capacitor 55 and the second capacitor 56 have been charged by the direct-current power supply 1, and the circuit current becomes zero.
- breaking operation of the commutation type direct-current breaker 5 in normal operating conditions is based on an external instruction 10.
- the control unit 50 On receiving an external instruction 10 for switch opening, the control unit 50 simultaneously opens the first main switch 51 and the second main switch 52.
- the second auxiliary switch 54 has already been opened a time t2 (for example 2.5 ms) before the opening of the second main switch 52. Therefore, when the first auxiliary switch 53 closes, an LC resonance circuit including the first capacitor 55, the reactor 57, the first main switch 51, and the first auxiliary switch 53 is formed.
- the control unit 50 opens the first main switch 51 and the second main switch 52 by receiving an instruction 11 for switch opening from the overcurrent tripping device 59 in the case of a fault current and receiving an external instruction 10 in the case of load current, the control unit 50 can interrupt both the fault current and the load current by selecting a commutating circuit depending on which of the two currents is flowing.
- Fig. 1 the first auxiliary switch 53, the first capacitor 55, and the reactor 57, which form a series circuit, may be arranged in any given order.
- Fig. 2 is a circuit diagram showing a case where the reactor 57 is disposed between the first auxiliary switch 53 and the first capacitor 55.
- Fig. 3 is a circuit diagram showing a case where the reactor 57 is disposed between the first main switch 51 and the second main switch 52. In this case, it is possible to obtain an effect of decreasing a rush rate when a fault current occurs, because a reactor component of the circuit constant is increased.
- n capacitors (n is a positive integer) each having the same capacitance as the first capacitor 55 and connected in parallel with one another are used as a second capacitor 56, which connection is utilized especially when the ratio between the capacitance of the first capacitor 55 and that of the second capacitor 56 is 1:n.
- the present invention it is possible to prevent hazards caused by capacitor charging voltage by disconnecting the circuit on the load side from two capacitors having different capacitance values when the breaker is opened. Also, it is possible to reduce the number of systems to be supplied with an instruction for switch opening or closing to two.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
A commutation type direct-current breaker (5) according
to the present invention comprises a first main switch (51) and
a second main switch (52) inserted in series into a direct-current
circuit that connects a direct-current power supply (1)
with a load (2); a commutating circuit connected in parallel
with the first main switch (51) which includes a first auxiliary
switch (53) operating in interlocked relation with the first
main switch (51), a second auxiliary switch (54) operating in
interlocked relation with the second main switch (52), a first
capacitor (55), a second capacitor (56), and a reactor (57); a control
unit (50) for controlling opening and closing operations of the
two main switches (51,52); and an overcurrent tripping device (59).
According to the above configuration, it is possible to
prevent hazards caused by capacitor charging voltage by
disconnecting the circuit on the load side from two
capacitors having different capacitance values when the
breaker is opened. Also, it is possible to reduce the
number of systems to be supplied with an instruction for
switch opening or closing to two.
Description
The present invention relates to a commutation type
direct-current breaker, and particularly to a circuit
configuration of a commutation type direct-current breaker
that includes two pairs of main and auxiliary switches and
two capacitors having different capacitance values, in
which a commutating circuit corresponding to the kind of
current to be interrupted can be chosen from two systems by
selecting switch conditions for the two pairs of main and
auxiliary switches.
Japanese Patent Laid-open No. Hei 8-148066 discloses
a commutation type direct-current breaker having a
commutating circuit configuration that includes two
capacitors having different capacitance values connected in
parallel with each other in a commutating circuit of the
commutation type direct-current breaker so that the
magnitude of commutating current can be selected.
However, the circuit configuration according to the
prior art mentioned above allows a circuit on the load side
and the two capacitors having different capacitance values
to remain connected with each other. This may constitute a
hazard because a capacitor charging voltage remains applied
to the circuit on the load side even when the breaker is
opened. In addition, a main contact, a first switch, and a
second switch are each controlled independently, and
therefore it is necessary to control three systems.
An object of the present invention is to provide a
commutation type direct-current breaker having a circuit
configuration that prevents a hazard when the breaker is
opened and also reduces the number of systems to be
supplied with an instruction for switch opening or closing
to two.
In order to achieve the above object, according to
the present invention, there are provided a first main
switch and a second main switch inserted in series into a
direct-current circuit that connects a direct-current power
supply with a load; a series circuit having a first
auxiliary switch, a first capacitor and a reactor which are
connected in parallel with the first main switch; a series
circuit having a second auxiliary switch and a second
capacitor which are connected in parallel with the first
capacitor; and a control unit for controlling opening and
closing operations of the first main switch and the second
main switch.
In addition, according to the present invention, the
first main switch and the first auxiliary switch are in
switch states different from each other, the first
auxiliary switch being closed after the first main switch
opens. Also, the second main switch and the second
auxiliary switch are in the same switch state, the second
auxiliary switch being opened before the second main switch
opens.
Furthermore, according to the present invention, the
ratio between the capacitance of the first capacitor and
that of the second capacitor is set to be in a range of
1:0.25 to 1:18. Moreover, according to the present
invention, n capacitors (where n is an integer in a range
of 1 ≦ n ≦ 18) each having the same capacitance as the
first capacitor and connected in parallel with one another
are used as a second capacitor.
Fig. 1 is a circuit diagram of a commutation type
direct-current breaker according to a first embodiment of
the present invention;
Fig. 2 is a circuit diagram of a commutation type
direct-current breaker according to a second embodiment of
the present invention;
Fig. 3 is a circuit diagram of a commutation type
direct-current breaker according to a third embodiment of
the present invention; and
Fig. 4 is a circuit diagram of a commutation type
direct-current breaker according to a fourth embodiment of
the present invention.
A first embodiment of the present invention will be
described with reference to Fig. 1.
The first auxiliary switch 53 operates in
interlocked relation with the first main switch 51.
Specifically, the first auxiliary switch 53 closes with a
delay of a time t1 (for example 2 ms) after the first main
switch 51 opens. The second auxiliary switch 54 operates
in interlocked relation with the second main switch 52.
Specifically, the second auxiliary switch 54 opens a time
t2 (for example 2.5 ms) before the second main switch 52
opens. Thus, it suffices to provide an instruction to open
or to close from the control unit 50 to only the first main
switch 51 and the second main switch 52.
When the load 2 is operated, the first main switch
51 and the second main switch 52 are closed. Under this
condition, a direct current with a voltage of 1500 V is
applied to the load 2, and thereby the load 2 becomes
operable. In this case, the first auxiliary switch 53,
which is in an switch state opposite from that of the first
main switch 51, is open, while the second auxiliary switch
54, which is in the same switch state as that of the second
main switch 52, is closed. The first capacitor 55 and the
second capacitor 56 are charged in advance at +2000 V with
respect to the direct-current power supply 1 side.
If a failure in the load 2 or a ground fault in the
feeder line 3 occurs, a very large, fast rising fault
current, which is determined by a circuit constant, flows
through the feeder line 3. When the circuit constant
represents a circuit resistance of 15 mΩ and a circuit
inductance of 150 µH, for example, the maximum value
reached is 100 kA, and the maximum rush rate is 10 kA/ms.
When such a fault current occurs, the fault current needs
to be interrupted very rapidly in order to minimize adverse
effects of the overcurrent on the apparatus. In the
commutation type direct-current breaker 5, the current
transformer 58 first detects a fault current value and then
inputs the fault current value to the overcurrent tripping
device 59. When an automatic breaking setting value of the
overcurrent tripping device 59 is set at 12000 A, for
example, the overcurrent tripping device 59 sends an
instruction 11 for switch opening to the control unit 50 at
the moment when the fault current value reaches 12000 A.
The control unit 50 first opens the first main switch 51.
The first auxiliary switch 53 closes with a delay of a time
t1 (for example 2 ms) after the opening of the first main
switch 51. This results in formation of an LC resonance
circuit including the first capacitor 55, the second
capacitor 56, the reactor 57, the first main switch 51, the
first auxiliary switch 53, and the second auxiliary switch
54. Then the first capacitor 55 and the second capacitor
56, which have been charged in advance, discharge to feed a
commutating current in an opposite direction from that of
the fault current into the first main switch 51. When the
capacitance of the first capacitor 55 is set at 600 µF and
the capacitance of the second capacitor 56 is set at 1200
µF, the maximum commutating current value in the opposite
direction is 40 kA. Thus, when tl is set in such a way
that the first auxiliary switch 53 closes before the fault
current value reaches 40 kA, the fault current and the
commutating current cancel out each other. Then, circuit
breaking by the first main switch 51 is ended when the
current of the first main switch 51 becomes zero.
Following the opening of the first main switch 51, the
control unit 50 opens the second main switch 52 after a
delay of a time t3 (for example 12 ms). The second
auxiliary switch 54 opens a time t2 (for example 2.5 ms)
before the opening of the second main switch 52. In this
case, when t3 is set at a value that satisfies t3 > t1 + t2
(for example 12 ms (t3) > 2 ms (t1) + 2.5 ms (t2) = 4.5 ms),
the second auxiliary switch 54 will not open before the
closing of the first auxiliary switch 53. Therefore, it is
possible for the second capacitor 56 to discharge together
with the first capacitor 55, thereby allowing a large fault
current as described above to be interrupted. The second
main switch 52 completes circuit breaking when the first
capacitor 55 and the second capacitor 56 have been charged
by the direct-current power supply 1, and the circuit
current becomes zero.
On the other hand, breaking operation of the
commutation type direct-current breaker 5 in normal
operating conditions is based on an external instruction 10.
On receiving an external instruction 10 for switch opening,
the control unit 50 simultaneously opens the first main
switch 51 and the second main switch 52. In this case, the
second auxiliary switch 54 has already been opened a time
t2 (for example 2.5 ms) before the opening of the second
main switch 52. Therefore, when the first auxiliary switch
53 closes, an LC resonance circuit including the first
capacitor 55, the reactor 57, the first main switch 51, and
the first auxiliary switch 53 is formed. Then, of the
first capacitor 55 and the second capacitor 56, which have
been charged, only the first capacitor 55 discharges to
feed the first main switch 51 with a commutating current in
a direction opposite to that of a load current flowing in
normal operating conditions. The maximum value of the load
current can reach 12000 A, which is a value set in the
overcurrent tripping device 59. However, the maximum value
of the commutating current obtained when only the first
capacitor 55 discharges is 14 kA. Therefore, the maximum
value 12000 A of the load current can be cancelled out by
the commutating current. Then, circuit breaking by the
first main switch 51 is ended when the current of the first
main switch 51 becomes zero. Thus, it is possible to
interrupt the load current.
Thus, since the second main switch 52 is provided,
the load 2, the first capacitor 55, and the second
capacitor 56 are disconnected after the opening of the
breaker. Therefore, it is possible to prevent hazards in
the circuit on the load side that may be caused by
capacitor charging voltage. Also, when the control unit 50
opens the first main switch 51 and the second main switch
52 by receiving an instruction 11 for switch opening from
the overcurrent tripping device 59 in the case of a fault
current and receiving an external instruction 10 in the
case of load current, the control unit 50 can interrupt
both the fault current and the load current by selecting a
commutating circuit depending on which of the two currents
is flowing.
In Fig. 1, the first auxiliary switch 53, the first
capacitor 55, and the reactor 57, which form a series
circuit, may be arranged in any given order. For example,
Fig. 2 is a circuit diagram showing a case where the
reactor 57 is disposed between the first auxiliary switch
53 and the first capacitor 55. In addition, Fig. 3 is a
circuit diagram showing a case where the reactor 57 is
disposed between the first main switch 51 and the second
main switch 52. In this case, it is possible to obtain an
effect of decreasing a rush rate when a fault current
occurs, because a reactor component of the circuit constant
is increased.
In general, a value set for automatic breaking in
the overcurrent tripping device 59 is 3000 A to 12000 A,
and the maximum value of commutating current needs to be
15000 A to 55000 A. Therefore, the ratio between the
capacitance of the first capacitor 55 and that of the
second capacitor 56 can assume any value within a range
having a minimum of 12000 A:(15000 A - 12000 A) = 1:0.25
and a maximum of 3000 A: (55000 A - 3000 A) = 1:17.3.. ≒
1:18. Fig. 4 is a circuit diagram showing a case where n
capacitors (n is a positive integer) each having the same
capacitance as the first capacitor 55 and connected in
parallel with one another are used as a second capacitor 56,
which connection is utilized especially when the ratio
between the capacitance of the first capacitor 55 and that
of the second capacitor 56 is 1:n.
According to the present invention, it is possible
to prevent hazards caused by capacitor charging voltage by
disconnecting the circuit on the load side from two
capacitors having different capacitance values when the
breaker is opened. Also, it is possible to reduce the
number of systems to be supplied with an instruction for
switch opening or closing to two.
Claims (8)
- A commutation type direct-current breaker comprising:a first main switch and a second main switch inserted in series into a direct-current circuit that connects a direct-current power supply with a load;a series circuit having a first auxiliary switch, a first capacitor, and a reactor which are connected in parallel with the first main switch;a series circuit having a second auxiliary switch and a second capacitor which are connected in parallel with the first capacitor; anda control unit for controlling opening and closing operations of said first main switch and said second main switch.
- A commutation type direct-current breaker comprising:a first main switch and a second main switch inserted in series into a direct-current circuit that connects a direct-current power supply with a load;a series circuit having a first auxiliary switch, a first capacitor, and a reactor which are connected in parallel with the first main switch;a series circuit having a second auxiliary switch and a second capacitor which are connected in parallel with the first capacitor;a control unit for controlling opening and closing operations of said first main switch and said second main switch; andan overcurrent tripping device for outputting an instruction for switch opening to the control unit when a value of a current flowing through the circuit reaches a specified value.
- A commutation type direct-current breaker as claimed in claim 1, wherein said first main switch and said first auxiliary switch are in switch states different from each other, the first auxiliary switch being closed after the first main switch opens.
- A commutation type direct-current breaker as claimed in claim 1, wherein said second main switch and said second auxiliary switch are in the same switch state, the second auxiliary switch being opened before the second main switch opens.
- A method for controlling a commutation type direct-current breaker including a first main switch and a second main switch inserted in series into a direct-current circuit that connects a direct-current power supply with a load; a first auxiliary switch operating in interlocked relation with the first main switch; a second auxiliary switch operating in interlocked relation with the second main switch; a first capacitor; a second capacitor; and a reactor; wherein opening and closing operations of said first main switch and said second main switch are controlled, said method comprising:
using properly a control method of opening the second main switch after the opening of the first main switch or a control method of opening the first main switch and the second main switch simultaneously depending on operating conditions. - A commutation type direct-current breaker as claimed in claim 1, wherein a vacuum interrupter is used for each of said first main switch, said second main switch, said first auxiliary switch, and said second auxiliary switch.
- A commutation type direct-current breaker as claimed in claim 1, wherein a ratio between the capacitance of said first capacitor and that of said second capacitor is in a range of 1:0.25 to 1:18.
- A commutation type direct-current breaker as claimed in claim 1, wherein n capacitors (where n is an integer in a range of 1 ≦ n ≦ 18) each having the same capacitance as the first capacitor and connected in parallel with one another are used as said second capacitor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32643999A JP3674419B2 (en) | 1999-11-17 | 1999-11-17 | Commutation type DC circuit breaker |
| JP32643999 | 1999-11-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1102295A2 true EP1102295A2 (en) | 2001-05-23 |
| EP1102295A3 EP1102295A3 (en) | 2003-05-14 |
Family
ID=18187826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00123740A Withdrawn EP1102295A3 (en) | 1999-11-17 | 2000-10-31 | Commutation type direct-current breaker |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1102295A3 (en) |
| JP (1) | JP3674419B2 (en) |
| CN (1) | CN1297239A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7911303B2 (en) * | 2006-12-28 | 2011-03-22 | Hitachi, Ltd. | Circuit breaker and opening and closing method thereof |
| WO2013045201A1 (en) * | 2011-09-27 | 2013-04-04 | Siemens Aktiengesellschaft | Dc voltage circuit breaker |
| WO2015062644A1 (en) * | 2013-10-30 | 2015-05-07 | Abb Technology Ltd | Circuit breaker |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4660131B2 (en) * | 2004-07-15 | 2011-03-30 | 株式会社東芝 | DC circuit breaker |
| EP2642501B1 (en) * | 2008-11-26 | 2019-10-23 | ABB Schweiz AG | High voltage direct current breaker arrangement and method |
| JP4923072B2 (en) | 2009-02-19 | 2012-04-25 | 株式会社日立製作所 | Commutation type DC circuit breaker |
| CN103474983B (en) * | 2013-08-20 | 2015-05-13 | 国家电网公司 | High voltage and great current direct-current circuit breaker and control method thereof |
| JP6953885B2 (en) * | 2017-08-10 | 2021-10-27 | 富士電機株式会社 | Power supply and cutoff switch circuit |
| DE102019102858A1 (en) * | 2019-02-05 | 2019-03-21 | Peter Lell | Method and device for permanent disconnection of a circuit with inductive load by time-shifted switching of two switches connected in series |
| CN110401174B (en) * | 2019-06-11 | 2021-06-11 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Main circuit topology of medium-voltage direct-current vacuum circuit breaker and breaking method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5452170A (en) * | 1992-02-21 | 1995-09-19 | Hitachi, Ltd. | Commutation type DC breaker |
| JPH07282691A (en) * | 1994-04-06 | 1995-10-27 | Hitachi Ltd | Commutation type dc circuit breaker |
| JPH08148066A (en) * | 1994-11-17 | 1996-06-07 | Hitachi Ltd | Commutating dc breaker |
-
1999
- 1999-11-17 JP JP32643999A patent/JP3674419B2/en not_active Expired - Lifetime
-
2000
- 2000-10-31 EP EP00123740A patent/EP1102295A3/en not_active Withdrawn
- 2000-11-17 CN CN 00128548 patent/CN1297239A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5452170A (en) * | 1992-02-21 | 1995-09-19 | Hitachi, Ltd. | Commutation type DC breaker |
| JPH07282691A (en) * | 1994-04-06 | 1995-10-27 | Hitachi Ltd | Commutation type dc circuit breaker |
| JPH08148066A (en) * | 1994-11-17 | 1996-06-07 | Hitachi Ltd | Commutating dc breaker |
Non-Patent Citations (2)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 1996, no. 02, 29 February 1996 (1996-02-29) & JP 07 282691 A (HITACHI LTD), 27 October 1995 (1995-10-27) * |
| PATENT ABSTRACTS OF JAPAN vol. 1996, no. 10, 31 October 1996 (1996-10-31) & JP 08 148066 A (HITACHI LTD), 7 June 1996 (1996-06-07) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7911303B2 (en) * | 2006-12-28 | 2011-03-22 | Hitachi, Ltd. | Circuit breaker and opening and closing method thereof |
| WO2013045201A1 (en) * | 2011-09-27 | 2013-04-04 | Siemens Aktiengesellschaft | Dc voltage circuit breaker |
| RU2584096C2 (en) * | 2011-09-27 | 2016-05-20 | Сименс Акциенгезелльшафт | Direct voltage power switch |
| WO2015062644A1 (en) * | 2013-10-30 | 2015-05-07 | Abb Technology Ltd | Circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001143581A (en) | 2001-05-25 |
| JP3674419B2 (en) | 2005-07-20 |
| EP1102295A3 (en) | 2003-05-14 |
| CN1297239A (en) | 2001-05-30 |
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