CN108365600A - The faulty line detection method of hybrid dc circuit breaker system and breaker closing - Google Patents
The faulty line detection method of hybrid dc circuit breaker system and breaker closing Download PDFInfo
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- CN108365600A CN108365600A CN201810142733.7A CN201810142733A CN108365600A CN 108365600 A CN108365600 A CN 108365600A CN 201810142733 A CN201810142733 A CN 201810142733A CN 108365600 A CN108365600 A CN 108365600A
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- Prior art keywords
- floodgate
- circuit breaker
- hybrid
- branch
- circuit
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/268—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for dc systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
Abstract
The present invention relates to hybrid dc circuit breaker system and the faulty line detection methods of breaker closing, there is the characteristics of Multi-stage module unit is composed in series using the transfer branch of hybrid dc circuit breaker, by way of shifting branch classification and closing a floodgate, the size of current in arrester is judged to determine whether closing a floodgate in faulty line, compared with the existing technology, the present invention while having found line fault in time, it opposite can reduce the capacity for selecting arrester, reduce the economic cost of hybrid dc circuit breaker.Judge whether reclosing in faulty line when reclosing especially suitable for dc circuit breaker, avoid directly to close a floodgate and generate larger short circuit current in faulty line, fault coverage expansion is effectively avoided to cause to damage other DC equipments.
Description
Technical field
The invention belongs to the line fault detection technique fields of high-voltage direct current power grid, and in particular to hybrid dc circuit breaker
The faulty line detection method of system and breaker closing.
Background technology
Flexible DC transmission technology provides effective solution means for the grid-connected and consumption of extensive regenerative resource,
The demand that has a wide range of applications in the world and market.But it is suitable for the direct current interruption of high-voltage direct current due to lacking
Device, the development of flexible direct current power grid and structure receive larger restriction.
Currently, high voltage DC breaker includes mainly hybrid dc circuit breaker, which includes being used for
The main branch be connected in DC transmission system normal operation, and the transfer for being connected in DC transmission system line fault
Branch, transfer branch include more than two concatenated modular units, and each modular unit includes having electronic power switch device
The first branch and the second branch with arrester, the first branch it is in parallel with the second branch；The structure of high voltage DC breaker,
Determine the advantages of it has taken into account the low running wastage of mechanical dc circuit breaker and the quick disjunction of solid-state direct-current breaker.
For example, in January, 2017 is published in《Electric power network technique》The paper of periodical the 1st phase of volume 41《High voltage DC breaker limits
Flow-optimized control method and emulation》, a kind of hybrid dc circuit breaker provided, as shown in Figure 1, main branch includes mechanical switch
K and IGBT switch valve groups Tm, transfer branch includes IGBT switch valve groups T1, T2, T3, the T4 being sequentially connected in series, each IGBT switches
Valve group is parallel with arrester, as energy absorption branch.
For another example, in October, 2015 is published in《China Power》The paper of periodical the 10th phase of volume 48《Hybrid high voltage direct current
The development of breaker data monitoring platform》, a kind of cascade full-bridge type high-voltage circuitbreaker topological structure is provided, as shown in Figure 1, packet
The main branch for being connected in DC transmission system normal operation is included, and for being connected in DC transmission system line fault
Transfer branch, main branch includes Fast mechanical switch b, main branch current-limiting reactor c, transfer electrical power electronic circuit breaker d；Transfer
Branch includes transfer branch current-limiting reactor c, main power electronics breaker h, arrester group g.
For the direct current transportation network containing above-mentioned hybrid high voltage DC breaker, when dc circuit breaker combined floodgate is special
Whether when being not reclosing, dc circuit breaker is usually to shift branch to be directly connected, be more than then setting according to line current
Short-circuit current value is to determine whether close a floodgate in faulty line.If closed a floodgate in faulty line, dc circuit breaker must be again
Disjunction short circuit current.Especially when dc circuit breaker reclosing, the secondary product of dc circuit breaker arrester energy will be caused
It is tired, cause the energy demand of dc circuit breaker arrester to select the capacity of bigger.The reason is that arrester absorbs energy for the first time
After amount, short time self-energy cannot distribute, and the temperature of arrester is higher, if energy is absorbed in the short time again, arrester
Temperature will continue to increase.If the temperature of arrester is maintained to be no more than permissible value, energy potential necessity of arrester is selected as two
Failure disjunction energy again.
Invention content
The object of the present invention is to provide hybrid dc circuit breaker system and the faulty line detection method of breaker closing,
For solving that in existing hybrid high voltage DC breaker large capacity arrester can only be selected, causing breaker cost is increased to ask
The problem of inscribing, and cannot finding line fault in time.
In order to solve the above technical problems, the present invention proposes a kind of faulty line detection side that hybrid dc circuit breaker closes a floodgate
Method, including following solution：
The mixed DC breaker of the present invention includes the transfer branch for being connected in DC transmission system line fault,
It includes more than two concatenated modular units to shift branch, and each modular unit includes first with electronic power switch device
Branch, above-mentioned detection method includes the following steps：
Modular unit is classified, every grade includes at least a modular unit, and every grade of modular unit parallel connection, which has, to keep away
The electronic power switch device of corresponding module unit is connected in the second branch of thunder device step by step in such a way that classification is closed a floodgate, described
Classification, which is closed a floodgate, includes at least two-stage combined floodgate, the electric current after every grade of modular unit closes a floodgate in detection corresponding module unit in arrester,
When the electric current is greater than or equal to setting value, judge that the circuit to close a floodgate is faulty line.
The present invention has the characteristics of Multi-stage module unit is composed in series using the transfer branch of hybrid dc circuit breaker, passes through
The mode that branch classification is closed a floodgate is shifted, judges the size of current in arrester to determine whether closing a floodgate in faulty line, relatively
In the prior art, the present invention opposite can reduce the capacity for selecting arrester, reduce mixed while finding line fault in time
The economic cost of box-like dc circuit breaker.Judge whether reclosing in fault wire when reclosing especially suitable for dc circuit breaker
Lu Zhong avoids directly combined floodgate and generates larger short circuit current in faulty line, fault coverage expansion is effectively avoided to cause to damage
Other bad DC equipments.
Further, the present invention is by judging the size of current in arrester, to determine whether close a floodgate in faulty line, from
And decide whether to continue to close a floodgate or terminate closing operation.When judgement close a floodgate circuit for faulty line when, terminate classification close a floodgate
Operation.
In order to solve the above technical problems, the present invention also proposes a kind of hybrid dc circuit breaker system, including following solution
Scheme：
Including hybrid dc circuit breaker, and the closing control device of the hybrid dc circuit breaker of control, the mixed DC
Breaker includes the transfer branch for being connected in DC transmission system line fault, and transfer branch includes more than two connects
Modular unit, each modular unit includes the first branch for having electronic power switch device, and modular unit is classified,
Every grade includes at least a modular unit, and every grade of modular unit parallel connection has the second branch of arrester, is closed a floodgate using classification
Mode be connected the electronic power switch device of corresponding module unit step by step, the classification, which is closed a floodgate, to be included at least two-stage and closes a floodgate, institute
Closing control device is stated for the electric current in arrester in the detection corresponding module unit after every grade of modular unit closes a floodgate, when the electricity
When stream is greater than or equal to setting value, judge that the circuit to close a floodgate is faulty line.
The present invention has the characteristics of Multi-stage module unit is composed in series using the transfer branch of hybrid dc circuit breaker, passes through
The mode that branch classification is closed a floodgate is shifted, judges the size of current in arrester to determine whether closing a floodgate in faulty line, relatively
In the prior art, the present invention opposite can reduce the capacity for selecting arrester, reduce mixed while finding line fault in time
The economic cost of box-like dc circuit breaker.
Further, the present invention is by judging the size of current in arrester, to determine whether close a floodgate in faulty line, from
And decide whether to continue to close a floodgate or terminate closing operation.When judgement close a floodgate circuit for faulty line when, terminate classification close a floodgate
Operation.
Above-mentioned mixed DC breaker further includes the main branch for being connected in DC transmission system normal operation, including
Mechanical switch, and with the concatenated electronic power switch device of mechanical switch.When line short fault, the power electronics of main branch
Switching device first disconnects, and short circuit current is transferred to transfer branch, is then turned off mechanical switch, absorbs short circuit event by transfer branch
The electric current of barrier.
Specifically, the quantity of the electronic power switch device is two or more, each electronic power switch device is also parallel with
Electronic power switch device.Preferably, electronic power switch device switchs for diode bridge.
Diode bridge switch includes full bridge structure unit, and the bridge arm of full bridge structure unit includes diode, the bridge
Arm is parallel with all-controlling power electronics device, and is parallel with third branch, and third branch includes concatenated diode and capacitance,
Capacitance is parallel with resistance.
Description of the drawings
Fig. 1 is a kind of hybrid dc circuit breaker structural schematic diagram in the prior art；
Fig. 2 is another hybrid dc circuit breaker structural schematic diagram in the prior art；
Fig. 3-1 is the first modular unit structural schematic diagram in the prior art；
Fig. 3-2 is second of modular unit structural schematic diagram in the prior art；
Fig. 3-3 is the third modular unit structural schematic diagram in the prior art；
Fig. 3-4 is the 4th kind of modular unit structural schematic diagram in the prior art；
Fig. 4 is the hybrid high voltage DC breaker structural schematic diagram of the present invention；
Fig. 5 is the schematic diagram that the hybrid high voltage DC breaker classification of the present invention is closed a floodgate.
Specific implementation mode
The specific implementation mode of the present invention is further described below in conjunction with the accompanying drawings.
The faulty line detection method that a kind of hybrid dc circuit breaker of the present invention closes a floodgate, wherein mixed DC open circuit
Device includes the transfer branch for being connected in DC transmission system line fault, and transfer branch includes more than two concatenated moulds
Module unit, each modular unit include the first branch for having electronic power switch device.Mixed DC based on above structure
Breaker, detection method includes the following steps for the faulty line of breaker closing of the invention：
Modular unit is classified, every grade includes at least a modular unit, and every grade of modular unit parallel connection, which has, to keep away
The electronic power switch device of corresponding module unit is connected in the second branch of thunder device step by step in such a way that classification is closed a floodgate, described
Classification, which is closed a floodgate, includes at least two-stage combined floodgate, the electric current after every grade of modular unit closes a floodgate in detection respective modules unit in arrester,
When the electric current is greater than or equal to setting value, judge that the circuit to close a floodgate is faulty line.
The present invention has the characteristics of Multi-stage module unit is composed in series using the transfer branch of hybrid dc circuit breaker, passes through
The mode that branch classification is closed a floodgate is shifted, judges the size of current in arrester to determine whether closing a floodgate in faulty line, relatively
In the prior art, the present invention opposite can reduce the capacity for selecting arrester, reduce mixed while finding line fault in time
The economic cost of box-like dc circuit breaker.
Above-mentioned every grade of modular unit mode in parallel with the second branch, for it is following any one：First, each modular unit
One in parallel the second branch with arrester of the first branch, i.e., each modular unit possesses independent the second branch respectively；The
Two, a second branch with arrester in parallel after every grade of modular unit series connection, i.e. every grade of modular unit shares a suction
Receive the first branch of energy.
Further, the present invention is by judging the size of current in arrester, to determine whether close a floodgate in faulty line, from
And decide whether to continue to close a floodgate or terminate closing operation.When judgement close a floodgate circuit for faulty line when, terminate classification close a floodgate
Operation.
Above-mentioned mixed DC breaker further includes the main branch for being connected in DC transmission system normal operation, including
Mechanical switch, and with the concatenated electronic power switch device of mechanical switch.When line short fault, the power electronics of main branch
Switching device first disconnects, and short circuit current is transferred to transfer branch, is then turned off mechanical switch, absorbs short circuit event by transfer branch
The electric current of barrier.Specifically, the quantity of the electronic power switch device is two or more, each electronic power switch device is also parallel with
Electronic power switch device.
Specifically, such as Fig. 3-1, Fig. 3-2, Fig. 3-3 can be selected in the electronic power switch device in main branch and transfer branch
Shown in the prior art electronic power switch device, be diode bridge switch, diode bridge switch shown in Fig. 3-1
Including full bridge structure unit, the bridge arm of full bridge structure unit includes diode, and the bridge arm of full bridge structure unit is parallel with full-control type
Power electronic devices and shunt capacitance.
It is a kind of full-bridge switch, including full bridge structure unit shown in Fig. 3-2, bridge arm includes full-control type power electronic device
Part, on capacitance and resistor coupled in parallel to bridge arm.It is another full-bridge switch shown in Fig. 3-3, it is different from the full-bridge switch in Fig. 3-2
, hold and resistor coupled in parallel after again series diode form new branch, new branch is in parallel with bridge arm.
The electronic power switch device of the present invention can also use diode bridge as shown in Figure 3-4 to switch, including complete
Bridge structural unit, bridge arm are diode, and bridge arm is parallel with all-controlling power electronics device (two IGBT in parallel), and in parallel
It includes concatenated diode and capacitance to have third branch, third branch, and capacitance is parallel with resistance.
A kind of hybrid dc circuit breaker with the modular unit of electronic power switch device shown in above-mentioned Fig. 3-4,
There is multistage 4th kind of modular unit to be composed in series as shown in figure 4, it shifts branch, each modular unit have multiple IGBT valve groups and
Arrester composes in parallel, and main branch is equipped with Fast mechanical switch, multiple concatenated electronic power switch device SM, concrete structure
For the 4th kind of modular unit shown in Fig. 3-4, or any one modular unit in Fig. 3-1, Fig. 3-2, Fig. 3-3, often
A electronic power switch device is parallel with mutually isostructural electronic power switch device.For 500kV DC lines,
500kV dc circuit breakers transfer branch has the transfer branch modular unit of 5 grades of 100kV to be composed in series.Each 100kV units are kept away
Thunder device terminal voltage is 100kV.The electric current of arrester is mA grades at this time, i.e. the corresponding electric leakage of arrester CCOV longtime runnings voltage
Stream.
By way of being classified and closing a floodgate transfer branch, the size of current in electric current or arrester in circuit is judged to judge
Whether close a floodgate in faulty line.To decide whether to continue to close a floodgate or terminate closing operation.Its principle is：
Electric current in arrester is changed according to VI curves (Current Voltage) with the voltage at arrester both ends.Work as 500kV
After the first order transfer branch modular unit conducting of dc circuit breaker, as shown in figure 5, the modular unit in figure is shown in Fig. 3-4
The 4th kind of modular unit.If circuit is short trouble, dc circuit breaker exit potential is 0V, remaining 4 groups of transfer branches
The voltage for bearing 500kV drops in arrester, and the voltage of every group of arrester is just increased to 120kV.At this time according to the VI curves of arrester,
Electric current will increase to tens of amperes in arrester, and stablize always.If second level transfer branch modular unit is also switched on, that
Remaining three groups of arresters will bear the voltage of 500kV, and the voltage of every grade of arrester will be increased to 166kV or more, take shelter from the thunder
Electric current in device will increase sharply to hundreds of peaces, and will not reduce.If circuit does not have failure, dc circuit breaker to be equivalent to combined floodgate
Just there is no electric current in open-circuit condition, arrester.Using this feature, judge whether dc circuit breaker closes a floodgate in the failure of short circuit
In circuit, dc circuit breaker is terminated in advance and is closed a floodgate in the operation of faulty line, disjunction event again when dc circuit breaker being avoided to close a floodgate
Hinder electric current, so as to cause the requirement of arrester energy is increased.
The present invention judges the electric current in circuit or keeps away in the way of hybrid dc circuit breaker transfer branch classification combined floodgate
Size of current in thunder device is to determine whether close a floodgate in faulty line.The combined floodgate of dc circuit breaker is terminated in advance in faulty line
Operation, disjunction fault current again when dc circuit breaker being avoided to close a floodgate.Especially when dc circuit breaker needs reclosing operation
When, it is avoided that the arrester of dc circuit breaker absorbs short circuit energy again.Dc circuit breaker is effectively reduced to absorb arrester
The requirement of energy reduces the cost of arrester.
The invention also provides a kind of hybrid dc circuit breaker system, including hybrid dc circuit breaker, and control are mixed
The closing control device of box-like dc circuit breaker, the mixed DC breaker include in DC transmission system line fault
The transfer branch of conducting, transfer branch include more than two concatenated modular units, and each modular unit includes having electric power electricity
The first branch of sub switch device.Modular unit is classified, every grade includes at least a modular unit, every grade of module list
First the second branch with arrester in parallel, the power electronics that corresponding module unit is connected step by step in such a way that classification is closed a floodgate are opened
Device is closed, which, which closes a floodgate, includes at least two-stage combined floodgate, and above-mentioned closing control device is used to after every grade of modular unit closes a floodgate examine
The electric current in arrester in corresponding module unit is surveyed, when the electric current is greater than or equal to setting value, judges the circuit to close a floodgate for event
Hinder circuit.
Hybrid dc circuit breaker transfer branch, which is utilized, in above-mentioned hybrid dc circuit breaker system the spy of plural serial stage
Point, be classified close a floodgate transfer branch by way of, judge the size of current in the electric current or arrester in circuit to determine whether
It closes a floodgate in faulty line.To decide whether to continue to close a floodgate or terminate closing operation, when the circuit that judgement is closed a floodgate is failure
When circuit, terminates classification and close a floodgate.
The electric current that arrester is flowed through in hybrid dc circuit breaker system is with the voltage at arrester both ends according to VI curves
(Current Voltage) variation.When shifting branch classification combined floodgate, the arrester voltage of residue transfer branch increases, if closed a floodgate
In the faulty line of short circuit, then dc circuit breaker exit potential is 0V, arrester voltage will increase, the electric current in arrester
It can increase, but be much smaller than short-circuit current.Using this feature, judge whether dc circuit breaker closes a floodgate in the fault wire of short circuit
Lu Zhong terminates dc circuit breaker and closes a floodgate in the operation of faulty line, disjunction failure again when dc circuit breaker being avoided to close a floodgate in advance
Electric current increases the requirement of arrester energy.
Further, mixed DC breaker further includes master for being connected in DC transmission system normal operation in system
Branch.Main branch includes mechanical switch, and with the concatenated electronic power switch device of mechanical switch.The concatenated power electronics is opened
It is two or more to close device, and each electronic power switch device is also parallel with electronic power switch device.
The electronic power switch device of the present invention is preferably diode bridge switch, as shown in figure 3-1, can also use this
The diode bridge switch that embodiment proposes, as shown in Figure 3-4.
Signified hybrid dc circuit breaker system, substantive distinguishing features outstanding are conjunction therein in above-described embodiment
Brake control device controls the process of hybrid dc circuit breaker, which is that one kind based on the present invention is hybrid straight
The process for flowing the faulty line detection method of breaker closing, since sufficiently clear is complete for the introduction to the above method, therefore
No longer hybrid dc circuit breaker system is described in detail.
Claims (9)
1. a kind of faulty line detection method that hybrid dc circuit breaker closes a floodgate, which includes for straight
The transfer branch be connected when transmission system line failure is flowed, transfer branch includes more than two concatenated modular units, Mei Gemo
Module unit includes the first branch for having electronic power switch device, which is characterized in that is included the following steps：
Modular unit is classified, every grade includes at least a modular unit, and every grade of modular unit parallel connection has arrester
The second branch, the electronic power switch device of corresponding module unit, the classification are connected step by step in such a way that classification is closed a floodgate
It closes a floodgate and includes at least two-stage combined floodgate, the electric current after every grade of modular unit closes a floodgate in detection corresponding module unit in arrester, when this
When electric current is greater than or equal to setting value, judge that the circuit to close a floodgate is faulty line.
2. the faulty line detection method that hybrid dc circuit breaker according to claim 1 closes a floodgate, which is characterized in that when
Judge the circuit to close a floodgate for faulty line when, terminate classification combined floodgate.
3. a kind of hybrid dc circuit breaker system, including hybrid dc circuit breaker, and the hybrid dc circuit breaker of control
Closing control device, the mixed DC breaker include the transfer branch for being connected in DC transmission system line fault,
It includes more than two concatenated modular units to shift branch, and each modular unit includes first with electronic power switch device
Branch, which is characterized in that be classified modular unit, every grade includes at least a modular unit, and every grade of modular unit is simultaneously
Join the second branch with arrester, the electronic power switch device of corresponding module unit is connected step by step in such a way that classification is closed a floodgate
Part, the classification, which is closed a floodgate, includes at least two-stage combined floodgate, and the closing control device is used to after every grade of modular unit closes a floodgate detect
Electric current in corresponding module unit in arrester judges that the circuit to close a floodgate is failure when the electric current is greater than or equal to setting value
Circuit.
4. hybrid dc circuit breaker system according to claim 3, which is characterized in that when the circuit that judgement is closed a floodgate is event
When hindering circuit, terminates the classification and close a floodgate.
5. hybrid dc circuit breaker system according to claim 3, which is characterized in that the mixed DC breaker is also
It include the main branch for being connected in DC transmission system normal operation.
6. hybrid dc circuit breaker system according to claim 5, which is characterized in that the main branch is opened including machinery
Close, and with the concatenated electronic power switch device of mechanical switch.
7. hybrid dc circuit breaker system according to claim 6, which is characterized in that the concatenated power electronics is opened
It is two or more to close device, and each electronic power switch device is also parallel with electronic power switch device.
8. the hybrid dc circuit breaker system according to claim 3,6 or 7, which is characterized in that the power electronics is opened
Device is closed to switch for diode bridge.
9. hybrid dc circuit breaker system according to claim 8, which is characterized in that the diode bridge switch packet
Full bridge structure unit is included, the bridge arm of full bridge structure unit includes diode, and the bridge arm is parallel with all-controlling power electronics device,
And it is parallel with third branch, third branch includes concatenated diode and capacitance, and capacitance is parallel with resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810142733.7A CN108365600A (en) | 2018-02-11 | 2018-02-11 | The faulty line detection method of hybrid dc circuit breaker system and breaker closing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810142733.7A CN108365600A (en) | 2018-02-11 | 2018-02-11 | The faulty line detection method of hybrid dc circuit breaker system and breaker closing |
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| CN108365600A true CN108365600A (en) | 2018-08-03 |
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| CN201810142733.7A Pending CN108365600A (en) | 2018-02-11 | 2018-02-11 | The faulty line detection method of hybrid dc circuit breaker system and breaker closing |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494693A (en) * | 2018-11-16 | 2019-03-19 | 北京交通大学 | A kind of hybrid dc circuit breaker and control method reducing reclosing impact |
| CN111509681A (en) * | 2020-04-23 | 2020-08-07 | 广东电网有限责任公司东莞供电局 | Solid-state direct-current circuit breaker sharing energy consumption branch and application method thereof |
| CN111509680A (en) * | 2020-04-23 | 2020-08-07 | 广东电网有限责任公司东莞供电局 | Direct-current circuit breaker sharing transfer branch and energy consumption branch and application method thereof |
| CN111999578A (en) * | 2020-08-10 | 2020-11-27 | 许继集团有限公司 | Controllable lightning arrester simulation test method and device |
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| CN106558865A (en) * | 2015-09-25 | 2017-04-05 | 全球能源互联网研究院 | A kind of modified cascade full-bridge high voltage DC breaker and its quick coincidence method |
| CN107294073A (en) * | 2017-08-15 | 2017-10-24 | 南京南瑞继保电气有限公司 | A kind of Control protection system of mixed topology dc circuit breaker |
| CN107565506A (en) * | 2017-08-21 | 2018-01-09 | 全球能源互联网研究院有限公司 | A kind of dc circuit breaker reclosing control method and device |
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2018
- 2018-02-11 CN CN201810142733.7A patent/CN108365600A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106558865A (en) * | 2015-09-25 | 2017-04-05 | 全球能源互联网研究院 | A kind of modified cascade full-bridge high voltage DC breaker and its quick coincidence method |
| CN107294073A (en) * | 2017-08-15 | 2017-10-24 | 南京南瑞继保电气有限公司 | A kind of Control protection system of mixed topology dc circuit breaker |
| CN107565506A (en) * | 2017-08-21 | 2018-01-09 | 全球能源互联网研究院有限公司 | A kind of dc circuit breaker reclosing control method and device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494693A (en) * | 2018-11-16 | 2019-03-19 | 北京交通大学 | A kind of hybrid dc circuit breaker and control method reducing reclosing impact |
| CN111509681A (en) * | 2020-04-23 | 2020-08-07 | 广东电网有限责任公司东莞供电局 | Solid-state direct-current circuit breaker sharing energy consumption branch and application method thereof |
| CN111509680A (en) * | 2020-04-23 | 2020-08-07 | 广东电网有限责任公司东莞供电局 | Direct-current circuit breaker sharing transfer branch and energy consumption branch and application method thereof |
| CN111999578A (en) * | 2020-08-10 | 2020-11-27 | 许继集团有限公司 | Controllable lightning arrester simulation test method and device |
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Application publication date: 20180803 |