CN107565524A - Novel quick mechanical type high voltage direct current circuit breaker - Google Patents
Novel quick mechanical type high voltage direct current circuit breaker Download PDFInfo
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- CN107565524A CN107565524A CN201710940999.1A CN201710940999A CN107565524A CN 107565524 A CN107565524 A CN 107565524A CN 201710940999 A CN201710940999 A CN 201710940999A CN 107565524 A CN107565524 A CN 107565524A
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- 230000005611 electricity Effects 0.000 claims description 9
- 230000001939 inductive effect Effects 0.000 claims description 9
- 229960001296 zinc oxide Drugs 0.000 claims description 5
- 239000011787 zinc oxide Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 6
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- 238000011084 recovery Methods 0.000 description 3
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- 239000003990 capacitor Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to a novel rapid mechanical high-voltage direct-current circuit breaker, which comprises: the main fracture branch comprises a mechanical switch and a saturable reactor, and the mechanical switch and the saturable reactor are connected in series and connected into the direct current transmission line. According to the technical scheme, before the cut-off fault current crosses zero, the transient current flowing through the saturable reactor is small, so that the saturable reactor works in an unsaturated region, the inductance value is large, the reduction rate of the fault current before the zero crossing point is reduced, the cut-off reliability can be improved, and the cost of the device is reduced.
Description
Technical field
The present invention relates to dc circuit breaker technical field, breaks more particularly to a kind of new Quick mechanical formula HVDC
Road device.
Background technology
Multi-end flexible direct current transmission system is very sensitive to dc-side short-circuit fault, when Multi-end flexible direct current transmission system is sent out
During raw short trouble, high voltage DC breaker can directly be cut off before converter blocking and isolated fault point, except what is broken down
Outside circuit, whole system can also normal operation.Therefore high voltage DC breaker is to ensure that Multi-end flexible direct current transmission system is stable
One of key equipment of reliability service.
Dc circuit breaker can be divided mainly into mechanical dc circuit breaker, solid state dc circuit breaker and hybrid from principle
Dc circuit breaker three types.Wherein, mechanical dc circuit breaker have on-state loss it is low, can outdoor open type arrangement, make
The advantages such as valency is low.
The exchange of tradition machinery formula dc circuit breaker generally use is cut-off the arc extinguishing in current over-zero and realized and cut-offs, but cut-offs
During zero crossing prior fault electric current easily decline and too fast cause failure of interruption so that cut-off reliability reduction.
The content of the invention
Based on this, it is necessary to for tradition machinery formula dc circuit breaker reliability it is low the problem of, there is provided it is a kind of new fast
Speed mechanical high voltage DC breaker.
A kind of new Quick mechanical formula high voltage DC breaker, including：Main fracture branch road, change of current branch road, energy-absorbing branch road
And change of current charging paths；
The change of current branch road, energy-absorbing branch road are connected with main fracture branch circuit parallel connection, the both ends series connection access direct current being connected in parallel
In the circuit of transmission of electricity；
The change of current branch road includes power electronics trigger switch and recharged capacitance, the power electronics trigger switch with it is pre-
Charging capacitor is connected in series and accessed in the circuit of direct current transportation；
The change of current charging paths are connected in parallel with the recharged capacitance in change of current branch road, for being carried out to recharged capacitance
Charging；
The main fracture branch road includes mechanical switch and saturable reactor, and mechanical switch and the saturable reactor series connection connects
Connect and access in the circuit of direct current transportation.
Above-mentioned new Quick mechanical formula high voltage DC breaker, recharged capacitance of the change of current charging paths to change of current branch road
Charging, ensure that change of current branch road has pre-charge voltage before each drop-out current of Quick mechanical formula dc circuit breaker.When system occurs
Short trouble, when fault current flows through main fracture branch road, the contact of mechanical switch separately and arcing, when mechanical switch reaches setting
When opening away from value, triggering power electronics trigger switch conducting, the recharged capacitance and saturable reactor of change of current branch road form loop
Oscillating current is produced, mechanical switch is produced zero crossing and blow-out, realizes cut-offfing for circuit.Energy-absorbing branch road absorbs direct current system afterwards
Energy in system is to major loop voltage-limiting protection.
Above-mentioned technical proposal, in fault current ascent stage, it is smaller to flow through the transient current of saturable reactor, saturation reactance
Device is operated in unsaturated region, and inductance value is larger, suppresses the climbing of direct fault current；Cut-off fault current zero crossing it
Before, it is smaller to flow through the transient current of saturable reactor, it is operated in unsaturated region, inductance value is larger, reduces zero crossing
The rate of descent of prior fault electric current, avoid causing failure of interruption because fault current decline is too fast, meeting straight-flow system to direct current
Breaker is swift in motion in itself, cut-off high current and bear it is high-tension on the basis of, by increasing capacitance it is possible to increase the reliability cut-off, reduce dress
The cost put.
Brief description of the drawings
Fig. 1 is new Quick mechanical formula high voltage DC breaker structural representation；
Fig. 2 is the new Quick mechanical formula high voltage DC breaker structural representation of one embodiment.
Embodiment
The embodiment of the new Quick mechanical formula high voltage DC breaker of the present invention is made below in conjunction with the accompanying drawings
Describe in detail.
It is new Quick mechanical formula high voltage DC breaker structural representation with reference to figure 1 and Fig. 2, Fig. 1, Fig. 2 is one
The new Quick mechanical formula high voltage DC breaker structural representation of embodiment, the new Quick mechanical formula HVDC
Breaker includes：Main fracture branch road 10, change of current branch road 20, energy-absorbing branch road 30 and change of current charging paths 40；
The change of current branch road 20, energy-absorbing branch road 30 and main fracture branch road 10 are connected in parallel, the both ends series connection being connected in parallel
In the circuit for entering direct current transportation；
The change of current branch road 20 includes power electronics trigger switch 202 and recharged capacitance 201, the power electronics triggering
Switch 202 is connected in series and accessed in the circuit of direct current transportation with recharged capacitance 201；
The change of current charging paths 40 are connected in parallel with the recharged capacitance 201 in change of current branch road 20, for precharge
Electric capacity 201 is charged；
The main fracture branch road 10 includes mechanical switch 101 and saturable reactor 102, the mechanical switch 101 and saturation
Reactor 102 is connected in series and accessed in the circuit of direct current transportation.
Wherein, the main fracture branch road 10 is used to cut-off fault current caused by DC line, and the mechanical switch 101 is
Can arcing and in current over-zero can blow-out switch；
The change of current branch road 20 is used to produce and the reverse high frequency oscillating current of short circuit current, makes the electric current of mechanical switch 101
Zero crossing cut-offs；
The change of current charging paths 40 are used to charge to recharged capacitance 201；
The energy-absorbing branch road 30 is used to absorb the energy that inductive element stores in straight-flow system, 10 liang of limitation main fracture branch road
The voltage at end.
The saturable reactor 102 is when the transient current for flowing through saturable reactor 102 is more than or equal to setting value, saturation
Reactor 102 is in zone of saturation, and inductance value is setting inductance value, and the saturable reactor 102 is flowing through saturable reactor
When 102 transient current is less than setting value, saturable reactor 102 is in unsaturated region, and inductance value is more than setting inductance value；Institute
State the change that saturable reactor 102 is used to reduce the electric current when the transient current for flowing through saturable reactor 102 is less than setting value
Rate.
Above-mentioned new Quick mechanical formula high voltage DC breaker, when straight-flow system normal work, mechanical switch 101 closes
Close, for inductance value close to zero, system power flows through mechanical switch 101 and saturation reactance to saturable reactor 102 under steady-state current
Device 102, on-state loss is smaller, when short trouble, when fault current flows through main fracture branch road 10, the machinery occur for DC line
Separately and arcing, the mechanical switch 101 reaches the opening away from value of setting to the contact of switch 101, triggers power electronics trigger switch
202 conductings, the recharged capacitance 201 discharges and produces oscillating current with the saturable reactor 102, when oscillating current amplitude
More than system maximum fault current amplitude, the electric current for flowing through mechanical switch 101 produces zero crossing, and the blow-out of mechanical switch 101 is cut-off,
The DC line is cut-off so as to realize, disengagement failure electric current, protect DC transmission system.Energy-absorbing branch road 30 absorbs directly afterwards
Energy in streaming system is to the voltage-limiting protection of main fracture branch road 10.
Above-mentioned technical proposal, in fault current ascent stage, it is smaller to flow through the transient current of saturable reactor 102, saturation
Reactor 102 is operated in unsaturated region, and inductance value is larger, suppresses the climbing of direct fault current, reduces system pair event
Barrier judges the requirement of sensitivity, while also reduces impact of the fault current to system；Before fault current zero crossing is cut-off,
It is smaller to flow through the transient current of saturable reactor 102, it is operated in unsaturated region, inductance value is larger, reduces zero crossing
The rate of descent of prior fault electric current, meeting that straight-flow system is swift in motion, cut-offs high current and bear height in itself to dc circuit breaker
On the basis of voltage, by increasing capacitance it is possible to increase the reliability cut-off, reduce the cost of device.
In one embodiment, the power electronics trigger switch 202 is used to open when the mechanical switch 101 and set away from reaching
Fixed turns on when opening away from value.In one embodiment, the power electronics trigger switch 202 can be by thyristor groups into open
Close.
The technical scheme of above-described embodiment, when cut-offfing fault current, when mechanical switch 101 reaches opening away from value i.e. for setting
Effectively open away from rear, trigger switch conducting, the recharged capacitance 201 connected with trigger switch is due to being pre-charged with pre-charge voltage, just
It can discharge and produce high frequency oscillating current with saturable reactor 102, when oscillating current amplitude exceedes system maximum fault current width
Value, the mechanical switch 101 is set to produce zero crossing and blow-out.
In one embodiment, the change of current charging paths 40 include：AC power 401 and diode 402, the exchange
Power supply 401 and diode 402 are connected in series, and the both ends being connected in series are connected in parallel with the both ends of recharged capacitance 201.
It is enough to form current zero-crossing point, the supply voltage amplitude of AC power 401 during high current to ensure to cut-off
Need to ensure recharged capacitance 201 filled with magnitude of voltage it is sufficiently high to meet to produce sufficiently high oscillating current peak value, and according to reality
The reserved adequate allowance of decay caused by border loop resistance 403, to ensure high-current on-off success.The voltage tool of AC power 401
Body can be set according to being actually needed, such as can select 220V mains voltage source.Due to being adopted to electric capacity charging needs
With dc source, accordingly, diode is set to be connected with AC power 401, the direction for limiting AC power supply 401 by setting
Recharged capacitance 201 is charged.
The technical scheme of the present embodiment, it is filled with by the AC power 401 and diode pair recharged capacitance 201 of series connection
The pre-charge voltage of direction initialization so that the pre-charge voltage can produce enough in interrupting process with saturable reactor 102
The high frequency oscillating current of amplitude, with ensure mechanical switch 101 can zero crossing successfully cut-off.
In one embodiment, the change of current charging paths 40 also include connecting with AC power 401 and diode 402
The resistance 403 of connection.
Pre-charge voltage on recharged capacitance 201, which needs to reach enough magnitudes of voltage and just can guarantee that in interrupting process, to be produced
The oscillating current of enough peak values, which is realized, to be cut-off.However, if the overtension of precharge, can also cause oscillating current peak value mistake
Height, electric current decline too fast and system are produced and impacts and influence the reliability cut-off, it is therefore desirable to limit on recharged capacitance 201
The suitable magnitude of voltage of preliminary filling；The technical scheme of the present embodiment, it is pre- by the resistance 403 for setting a suitable resistance 403 to be worth, limitation
Fill and give recharged capacitance 201 suitable magnitude of voltage, guarantee realize cut-off while lifted straight-flow system stability and
The reliability cut-off.
In one embodiment, the energy-absorbing branch road 30 includes Zinc-Oxide Arrester 301；The energy-absorbing branch road 30 is used for
Absorb the energy that inductive element stores in straight-flow system, the voltage at the both ends of limitation main fracture branch road 10.
After the zero passage blow-out of mechanical switch 101, electric current transfers to the recharged capacitance 201 of change of current branch road 20
On, voltage is gradually increasing on recharged capacitance 201, and is applied on the fracture of mechanical switch 101, the both ends of mechanical switch 101 it is extensive
Complex voltage rises, and the overtension at the fracture both ends of mechanical switch 101, easily mechanical switch 101 is caused to be lost, and reduces machinery
The service life of switch 101.
The technical scheme of the present embodiment, the energy-absorbing branch road 30 of Zinc-Oxide Arrester 301 is included by parallel connection in circuit,
When the recovery voltage at the both ends of mechanical switch 101 rises, when reaching the operation voltage of Zinc-Oxide Arrester 301, energy-absorbing branch road 30
Act and absorb the energy that inductive element stores in straight-flow system after fault current is cut off, limit mechanical switchs 101 both ends
Voltage, to realize the voltage-limiting protection to the mechanical switch 101, the service life of elevating mechanism switch 101.
The technical scheme of each embodiment of summary, the new Quick mechanical formula HVDC of the embodiment of the present invention break
Road utensil has the advantage that：
1, when fault current occurs, possesses the two-way ability for cut-offfing specified low current and intereelectrode short-circuit high current.
2 in system normal operation, and mechanical switch 101 closes, and the inductance value under steady-state current of saturable reactor 102 approaches
In zero, system power flows through mechanical switch 101 and saturable reactor 102, and on-state loss is smaller.
3 in fault current ascent stage, can suppress the climbing of direct fault current, reduces system to breakdown judge spirit
The requirement of quick property, while also reduce impact of the fault current to system.
4 before fault current zero crossing, and saturable reactor 102 is operated in unsaturated region, and its inductance value is larger, can limit
Fault current rate of descent processed improves the reliability cut-off within the scope of connecting-disconnecting function；Precharge electricity can also be reduced simultaneously
Hold the capacity of 201 devices, so as to reduce cost.
5 limitation preliminary fillings give recharged capacitance 201 suitable magnitude of voltage, and direct current is lifted while guaranteeing realization and cut-offfing
The stability of system and the reliability cut-off.
6 when the recovery voltage at the both ends of mechanical switch 101 rises, and energy-absorbing branch road 30 acts and absorbs fault current and is cut off
The energy that inductive element stores in straight-flow system afterwards, limit mechanical switch the voltage at 101 both ends, realized to mechanical switch 101
Voltage-limiting protection, the service life of elevating mechanism switch 101.
Illustrate the new Quick mechanical formula high voltage DC breaker of the present invention with a specific embodiment again below,
Fig. 2 is refer to, the new Quick mechanical formula high voltage DC breaker includes main fracture branch road 10, change of current branch road 20, energy-absorbing
Branch road 30 and change of current charging paths 40, change of current branch road 20, energy-absorbing branch road 30 and main fracture branch road 10 are connected in parallel, are connected in parallel
In the circuit of both ends series connection access direct current transportation；
Wherein, main fracture branch road 10 includes the mechanical switch 101 and saturable reactor 102 being connected in series；Main fracture branch road
10 are used in normal conditions, by DC line rated current in the case of small loss, when short trouble occurs, cut-off straight
Fault current caused by Flow Line.
Change of current branch road 20 includes the recharged capacitance 201 being connected in series and trigger switch, recharged capacitance 201 are cut-offfing
Before be pre-charged with pre-charge voltage, trigger switch is opened away from being cut-off when reaching setting value in mechanical switch 101, and change of current branch road 20 is used for
During generation short trouble, reverse high frequency oscillating current is produced, makes the current zero-crossing point of mechanical switch 101 complete to cut-off.
Change of current charging paths 40 include AC power 401, resistance 403 and the diode 402 being sequentially connected in series, and the change of current is filled
The electric both ends of branch road 40 are connected in parallel with the both ends of recharged capacitance 201, and change of current charging paths 40 are used to fill recharged capacitance 201
Electricity, ensure recharged capacitance 201 after system jam, triggering change of current branch road 20 turns it on.
Energy-absorbing branch road 30 includes Zinc-Oxide Arrester 301, and energy-absorbing branch road 30 is used to cut-off failure electricity in main fracture branch road 10
After stream, the energy that inductive element stores in system after fault current is cut off, voltage-limiting protection main fracture branch road 10 are absorbed.
When short trouble occurs for system, flow through mechanical switch 101 and saturable reactor 102 electric current will rapidly on
Rise, because saturable reactor 102 is inductive element, it will in the climbing of fault current limiting to a certain degree, thus reduce
Requirement of the system to breakdown judge sensitivity, while also reduce impact of the fault current to system.Meanwhile mechanical switch 101
Simultaneously arcing is opened, reaching switchable in the distance of the contact of mechanical switch 101 effectively opens away from afterwards, and trigger switch turns on, so as to
Recharged capacitance 201 produces high frequency oscillating current with the vibration of saturable reactor 102, is superimposed upon artificially generated in main loop unit
One zero crossing so that the blow-out of mechanical switch 101.The recovery voltage at the both ends of mechanical switch 101 rises after blow-out, is inhaled when reaching
During energy 30 operation voltage of branch road, energy-absorbing branch road 30 acts the energy in inductive element in absorption system, completes opening for fault current
It is disconnected.
During fault current is cut-off, saturable reactor 102 never will be transferred to saturation work by saturation operation region
Make region, its inductance value will significantly increase, and so as to limit the fault current rate of descent before current zero-crossing point, ensure that out
Disconnected reliability；Simultaneously as the reduction of fault current rate of descent, the capacity of required capacitor can also decrease, and this will have
Effect ground reduces the manufacturing cost of breaker.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (8)
- A kind of 1. new Quick mechanical formula high voltage DC breaker, it is characterised in that including：Main fracture branch road, change of current branch road, Energy-absorbing branch road and change of current charging paths；The change of current branch road, energy-absorbing branch road are connected with main fracture branch circuit parallel connection, the both ends series connection access direct current transportation being connected in parallel Circuit in；The change of current branch road includes power electronics trigger switch and recharged capacitance, the power electronics trigger switch and precharge Electric capacity is connected in series and accessed in the circuit of direct current transportation；The change of current charging paths are connected in parallel with the recharged capacitance in change of current branch road, for being filled to recharged capacitance Electricity；The main fracture branch road includes mechanical switch and saturable reactor, and the mechanical switch and saturable reactor are connected in series simultaneously Access in the circuit of direct current transportation.
- 2. mechanical dc circuit breaker according to claim 1, it is characterised in that the main fracture branch road is used to cut-off directly Fault current caused by Flow Line, the mechanical switch for can arcing and in current over-zero can blow-out switch；The change of current branch road is used to produce and the reverse high frequency oscillating current of short circuit current, opens mechanical switch current zero-crossing point It is disconnected；The change of current charging paths are used to charge to recharged capacitance；The energy-absorbing branch road is used to absorb the energy that inductive element stores in straight-flow system, the electricity at limitation main fracture branch road both ends Pressure.
- 3. new Quick mechanical formula high voltage DC breaker according to claim 1, it is characterised in that the saturation electricity For anti-device when the transient current for flowing through saturable reactor is more than or equal to setting value, saturable reactor is in zone of saturation, inductance It is worth to set inductance value, the saturable reactor is when the transient current for flowing through saturable reactor is less than setting value, saturation reactance Device is in unsaturated region, and inductance value is more than setting inductance value；The saturable reactor is used to flow through the temporary of saturable reactor State electric current reduces the rate of change of the electric current when being less than setting value.
- 4. new Quick mechanical formula high voltage DC breaker according to claim 1, it is characterised in that work as fault current When flowing through main fracture branch road, separately and arcing, the mechanical switch reaches the opening away from value of setting, touches for the contact of the mechanical switch Electricity is electronically activated switch conduction, and the recharged capacitance electric discharge simultaneously produces oscillating current with the saturable reactor, when shaking Swing current amplitude and exceed system maximum fault current amplitude, the electric current for flowing through mechanical switch produces zero crossing, mechanical switch blow-out Cut-off.
- 5. new Quick mechanical formula high voltage DC breaker according to claim 1, it is characterised in that the electric power electricity Sub- trigger switch is used for when the mechanical switch is opened away from reaching being turned on when opening away from value for setting.
- 6. new Quick mechanical formula high voltage DC breaker according to claim 1, it is characterised in that the change of current is filled Electric branch road includes：AC power and diode, the AC power connect with Diode series, the both ends being connected in series and preliminary filling Electric capacity both ends are connected in parallel.
- 7. new Quick mechanical formula high voltage DC breaker according to claim 6, it is characterised in that the change of current is filled Electric branch road also includes the resistance being connected with AC power and Diode series.
- 8. new Quick mechanical formula high voltage DC breaker according to claim 1, it is characterised in that the energy-absorbing branch Road includes Zinc-Oxide Arrester；The energy-absorbing branch road is used to absorb the energy that inductive element stores in straight-flow system, limits main disconnected The voltage at mouth branch road both ends.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710940999.1A CN107565524A (en) | 2017-09-30 | 2017-09-30 | Novel quick mechanical type high voltage direct current circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710940999.1A CN107565524A (en) | 2017-09-30 | 2017-09-30 | Novel quick mechanical type high voltage direct current circuit breaker |
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| CN107565524A true CN107565524A (en) | 2018-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710940999.1A Pending CN107565524A (en) | 2017-09-30 | 2017-09-30 | Novel quick mechanical type high voltage direct current circuit breaker |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968388A (en) * | 2018-01-11 | 2018-04-27 | 国家电网公司 | High-voltage direct-current circuit breaker for direct-current transmission |
| CN108376971A (en) * | 2018-03-13 | 2018-08-07 | 天津大学 | Generator outlet breaker and its control method based on active attenuation DC component |
| CN108717909A (en) * | 2018-06-28 | 2018-10-30 | 河南森源电气股份有限公司 | A kind of dc circuit breaker for low-voltage direct |
| CN109980617A (en) * | 2019-04-04 | 2019-07-05 | 国网冀北电力有限公司电力科学研究院 | The electric current Interruption performance of current-injecting dc circuit breaker optimizes circuit |
| CN111355213A (en) * | 2018-12-21 | 2020-06-30 | 平高集团有限公司 | Direct current breaker |
| CN113299504A (en) * | 2021-04-22 | 2021-08-24 | 西安交通大学 | Magnetic control oscillation type direct current breaker with multi-medium fractures connected in series |
| CN114175436A (en) * | 2019-03-29 | 2022-03-11 | 西门子股份公司 | Electrical network and method for operating an electrical network |
| WO2022116043A1 (en) * | 2020-12-02 | 2022-06-09 | Abb Schweiz Ag | Direct current circuit breaker and protection system |
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| JP2000048686A (en) * | 1998-07-29 | 2000-02-18 | Hitachi Ltd | Commutation type dc circuit breaker |
| JP2006032077A (en) * | 2004-07-15 | 2006-02-02 | Toshiba Corp | Dc circuit breaker |
| CN104767170A (en) * | 2014-01-06 | 2015-07-08 | 国家电网公司 | Mixed high-voltage direct-current circuit breaker and realization method thereof |
| CN106300291A (en) * | 2016-08-27 | 2017-01-04 | 天津大学 | Hybrid high voltage DC breaker based on IGBT |
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| JP2000048686A (en) * | 1998-07-29 | 2000-02-18 | Hitachi Ltd | Commutation type dc circuit breaker |
| JP2006032077A (en) * | 2004-07-15 | 2006-02-02 | Toshiba Corp | Dc circuit breaker |
| CN104767170A (en) * | 2014-01-06 | 2015-07-08 | 国家电网公司 | Mixed high-voltage direct-current circuit breaker and realization method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968388A (en) * | 2018-01-11 | 2018-04-27 | 国家电网公司 | High-voltage direct-current circuit breaker for direct-current transmission |
| CN108376971A (en) * | 2018-03-13 | 2018-08-07 | 天津大学 | Generator outlet breaker and its control method based on active attenuation DC component |
| CN108717909A (en) * | 2018-06-28 | 2018-10-30 | 河南森源电气股份有限公司 | A kind of dc circuit breaker for low-voltage direct |
| CN111355213A (en) * | 2018-12-21 | 2020-06-30 | 平高集团有限公司 | Direct current breaker |
| CN111355213B (en) * | 2018-12-21 | 2023-09-01 | 平高集团有限公司 | Direct current breaker |
| CN114175436A (en) * | 2019-03-29 | 2022-03-11 | 西门子股份公司 | Electrical network and method for operating an electrical network |
| CN109980617A (en) * | 2019-04-04 | 2019-07-05 | 国网冀北电力有限公司电力科学研究院 | The electric current Interruption performance of current-injecting dc circuit breaker optimizes circuit |
| WO2022116043A1 (en) * | 2020-12-02 | 2022-06-09 | Abb Schweiz Ag | Direct current circuit breaker and protection system |
| CN113299504A (en) * | 2021-04-22 | 2021-08-24 | 西安交通大学 | Magnetic control oscillation type direct current breaker with multi-medium fractures connected in series |
| CN113299504B (en) * | 2021-04-22 | 2022-06-21 | 西安交通大学 | Magnetic control oscillation type direct current breaker with multi-medium fractures connected in series |
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Application publication date: 20180109 |