CN106209039A - A kind of novel mixed type dc circuit breaker and power cell - Google Patents
A kind of novel mixed type dc circuit breaker and power cell Download PDFInfo
- Publication number
- CN106209039A CN106209039A CN201610686720.7A CN201610686720A CN106209039A CN 106209039 A CN106209039 A CN 106209039A CN 201610686720 A CN201610686720 A CN 201610686720A CN 106209039 A CN106209039 A CN 106209039A
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- CN
- China
- Prior art keywords
- branch road
- power cell
- channel branch
- circuit breaker
- cut
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- 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
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
- H03K17/0812—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the control circuit
- H03K17/08128—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the control circuit in composite switches
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- 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
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The present invention relates to a kind of novel mixed type dc circuit breaker and power cell, this dc circuit breaker includes the change of current branch road being connected in parallel, cut-off branch road and energy absorption branch road, cut-off branch road and include that what several were connected in series cut-offs unit, wherein cut-off unit and use a kind of particular power cell structure, this particular power cell structure includes at least one forward channel branch road and at least one the backward channel branch road being connected in parallel, described forward channel branch road and backward channel branch road all comprise a full-control type power device of series aiding connection and a diode, the conducting direction of described forward channel branch road and backward channel branch road is contrary.This dc circuit breaker cut-off unit by by multiple single channel branch circuit parallel connections connect, be effectively increased motility and the reliability of chopper drop-out current.
Description
Technical field
The present invention relates to a kind of novel mixed type dc circuit breaker and power cell, belong to technical field of direct current power transmission.
Background technology
Multi-terminal HVDC transmission based on flexible direct current and direct current network technology receive renewable energy for electrical network is greatly improved
The ability in source, it is achieved the remote allotment of regenerative resource is significant.Along with direct current network voltage and transmission line capability
Improving, motility and reliability for dc circuit breaker drop-out current have had requirements at the higher level.
The patent of invention " a kind of hybrid direct-current breaker topology structure " of Publication No. CN105609344A discloses one
Planting direct-current breaker topology structure, the solid-state switch S of this topological structure includes several IGBT module being connected in series, each
IGBT module is made up of two IGBT differential concatenations, is used for realizing two-way shutoff fault current.But, due to multiple IGBT module
Being connected in series, when one IGBT of any of which breaks down, then chopper no longer has cut-out in the direction that this IGBT turns on
Ability, when the IGBT of any two reverse-conducting breaks down, then this chopper no longer possesses cutting function, chopper cut-offs event
Reliability and the motility of barrier electric current are poor.
Therefore, based on above-mentioned analysis, how while quickly isolating fault, strengthen cut-off fault current motility and
Reliability, becomes the critical problem in the research of hybrid high voltage DC breaker.
Summary of the invention
The purpose of the present invention is to propose to a kind of novel mixed type dc circuit breaker and power cell, be used for solving direct current interruption
In device, the series connection of full-control type power device connects, and causes dc circuit breaker to cut-off fault current reliability and poor the asking of motility
Topic.
For solving above-mentioned technical problem, the present invention includes:
A kind of power cell, described power cell includes at least one forward channel branch road and at least one being connected in parallel
Backward channel branch road；Described forward channel branch road and backward channel branch road all comprise a full-control type power device of series aiding connection
With a diode, the conducting direction of described forward channel branch road and backward channel branch road is contrary.
Further, described power cell also includes a capacitive branch；Described capacitive branch includes an electric capacity, described
Capacitive branch is connected with described forward channel branch road and described backward channel branch circuit parallel connection.
Further, described power cell also includes that a duplex channel branch road, described duplex channel branch road include two
The full-control type power device of differential concatenation.
Further, described full-control type power device is IGBT or IGCT.
A kind of novel mixed type dc circuit breaker, described dc circuit breaker includes the change of current branch road being connected in parallel, cut-offs and prop up
Road and energy absorption branch road；Described change of current branch road includes a mechanical switch and at least one convertor unit, described in cut-off branch road
Cut-off unit including what several were connected in series, it is characterised in that described in cut-off unit and use a kind of particular power cell structure,
Described particular power cell structure includes at least one forward channel branch road and at least one backward channel branch road being connected in parallel,
Described forward channel branch road and backward channel branch road all comprise a full-control type power device of series aiding connection and a diode,
The conducting direction of described forward channel branch road and backward channel branch road is contrary.
Further, described particular power cell structure also includes a capacitive branch, and described capacitive branch includes one
Electric capacity, described capacitive branch is connected with described forward channel branch road and described backward channel branch circuit parallel connection.
Further, described particular power cell structure also includes a duplex channel branch road, described duplex channel branch road
Full-control type power device including two differential concatenations.
Further, the particular power cell structure described in the employing of described convertor unit.
Further, described full-control type power device is IGBT or IGCT.
The invention has the beneficial effects as follows:
Compared with other schemes of prior art, the power cell of the present invention uses forward channel branch road and backward channel branch road
The mode being connected in parallel, enhances reliability and the motility of circuit.When this power cell comprises a plurality of forward channel branch road
During with backward channel branch road, the ability of novel mixed type dc circuit breaker disengagement failure electric current can be effectively improved.
It addition, described power cell also includes shunt capacitance branch road, it is used for absorbing fault current, event can be effectively reduced
The barrier electric current damage effect to power device, improves the service life of dc circuit breaker accordingly.
Accompanying drawing explanation
Fig. 1 is the power cell topology in embodiment 1；
Fig. 2 is the power cell topology in embodiment 2；
Fig. 3 is the power cell topology in embodiment 3；
Fig. 4 is the power cell topology in embodiment 4；
Fig. 5 is novel mixed type direct-current breaker topology structure.
Detailed description of the invention
The present invention proposes a kind of novel mixed type dc circuit breaker and power cell, and it is mainly improved by: by a plurality of
Forward channel branch road and backward channel branch circuit parallel connection connect, and are parallel with a capacitive branch simultaneously, enhance hybrid direct current and break
The motility of road device wiring and reliability, it is to avoid the impact of power device is lost by fault current, below in conjunction with the accompanying drawings to this
Invention is further described in detail.
A kind of power cell embodiment 1；
With reference to Fig. 1, this power cell includes a forward channel branch road being connected in parallel and a backward channel branch road, its
Middle forward channel props up route IGBT (1) and diode (2) composition, and backward channel props up route IGBT (4) and diode (3) composition,
And the two ends of IGBT (1) and IGBT (4) respectively one diode of inverse parallel, wherein the conducting direction of forward channel branch road is along Fig. 1
The middle direction of arrow, the conducting direction of backward channel branch road is contrary with the conducting direction of forward channel branch road.
A kind of power cell embodiment 2；
With reference to Fig. 2, this power cell includes that the capacitive branch being connected in parallel, a forward channel branch road and one are anti-
To passage branches；Capacitor branches includes an electric capacity (9), and forward channel props up route IGBT (5) and diode (6) composition, instead
It is made up of IGBT (8) and diode (7) to passage branches, and one two pole of inverse parallel respectively, the two ends of IGBT (5) and IGBT (8)
Pipe, the wherein conducting direction of forward channel branch road direction of arrow along Fig. 2, the conducting direction of backward channel branch road and forward channel
The conducting direction of branch road is contrary.
A kind of power cell embodiment 3；
With reference to Fig. 3, a capacitive branch that this power cell includes being connected in parallel, forward channel branch road, one anti-
To passage branches and a duplex channel branch road；Wherein, capacitor branches includes an electric capacity (16), and forward channel props up route
IGBT (10) and diode (11) series aiding connection composition, backward channel props up route IGBT (15) and diode (14) composition is gone here and there in the same direction
Connection, duplex channel prop up route IGBT (12) and IGBT (13) anti-series form, IGBT (10), IGBT (12), IGBT (13) and
The two ends of IGBT (15) one diode of inverse parallel respectively, the wherein conducting direction of forward channel branch road direction of arrow along Fig. 3,
The conducting direction of backward channel branch road is contrary with the conducting direction of forward channel branch road.
A kind of power cell embodiment 4；
With reference to Fig. 4, this power cell includes that the capacitive branch being connected in parallel, two forward channel branch roads and two are anti-
To passage branches；Wherein, capacitor branches includes an electric capacity (25), and Article 1 forward channel props up route IGBT (17) and two poles
Pipe (18) series aiding connection composition, Article 2 forward channel props up route IGBT (19) and diode (20) series aiding connection forms, and first
Bar backward channel props up route IGBT (22) and diode (21) series aiding connection composition, and Article 2 backward channel props up route IGBT (24)
Forming with diode (23) series aiding connection, the wherein conducting direction of forward channel branch road direction of arrow along Fig. 4, backward channel props up
The conducting direction on road is contrary with the conducting direction of forward channel branch road.
It addition, the IGBT in above-mentioned four kinds of power cell embodiments also can use other wholly-controled device to substitute, such as
IGCT。
With reference to embodiment 3 increases, the mode of duplex channel branch road and embodiment 4 increase forward channel branch road and anti-
To the mode of passage branches, in case of need, also can be similar to the more forward channel in parallel of increase in power cell to prop up
Road and backward channel branch road and duplex channel branch road, with through-current capability and the motility of enhancement unit module.
A kind of novel mixed type dc circuit breaker embodiment；
With reference to Fig. 5, this dc circuit breaker includes the change of current branch road being connected in parallel, cut-offs branch road and energy absorption branch road.Its
In, change of current branch road includes a mechanical switch and several convertor units, cut-offs branch road and includes that what several were connected in series cut-offs
Unit, energy absorption branch road includes spark gap unit.
Wherein, cut-off unit and use any one power cell structure in above-mentioned power cell embodiment 1 to 4, due to this
The introduction of power cell structure is shown in detail in above-mentioned content, does not repeats them here.
It addition, convertor unit can use any one power cell structure in above-mentioned power cell embodiment 1 to 4, also
H bridge construction of the prior art or half-bridge structure can be used, and the number of convertor unit is less than cut-offfing unit.
The operation principle of novel mixed type dc circuit breaker:
When direct current network breaks down, dc circuit breaker sends after cut-offfing order, cut-offs the IGBT conducting in unit, the change of current
IGBT in unit turns off, and when electric current is transferred completely into and cut-offs on branch road, Fast mechanical switch disjunction, when the cutter of mechanical switch
Lock leaves when sufficiently large, turns off and cut-offs IGBT in unit, and fault current is charged cut-offfing electric capacity in parallel in unit, works as electricity
When holding the action threshold value that voltage reaches spark gap, lightning arrestor movement, consume fault current, dc circuit breaker has cut-off.
Claims (10)
1. a power cell, it is characterised in that described power cell includes at least one forward channel branch road being connected in parallel
With at least one backward channel branch road；Described forward channel branch road and backward channel branch road all comprise a full control of series aiding connection
Type power device and a diode, the conducting direction of described forward channel branch road and backward channel branch road is contrary.
Power cell the most according to claim 1, it is characterised in that described power cell also includes a capacitive branch,
Described capacitive branch includes an electric capacity, described capacitive branch and described forward channel branch road and described backward channel branch circuit parallel connection
Connect.
Power cell the most according to claim 1 and 2, it is characterised in that described power cell also includes a two-way
Road branch road, described duplex channel branch road includes the full-control type power device of two differential concatenations.
Power cell the most according to claim 1 and 2, it is characterised in that described full-control type power device be IGBT or
IGCT。
5. a novel mixed type dc circuit breaker, described dc circuit breaker includes the change of current branch road being connected in parallel, cut-offs branch road
With energy absorption branch road；Described change of current branch road includes a mechanical switch and at least one convertor unit, described in cut-off branch road bag
Include that several are connected in series cut-offs unit, it is characterised in that described in cut-off unit and use a kind of particular power cell structure, institute
State at least one forward channel branch road and at least one backward channel branch road, institute that particular power cell structure includes being connected in parallel
State forward channel branch road and backward channel branch road all comprises a full-control type power device and a diode, the institute of series aiding connection
The conducting direction stating forward channel branch road and backward channel branch road is contrary.
Novel mixed type dc circuit breaker the most according to claim 5, it is characterised in that described particular power cell structure
Also including a capacitive branch, described capacitive branch includes an electric capacity, described capacitive branch and described forward channel branch road and
Described backward channel branch circuit parallel connection connects.
7. according to the novel mixed type dc circuit breaker described in claim 5 or 6, it is characterised in that described particular power cell
Structure also includes that a duplex channel branch road, described duplex channel branch road include the full-control type power device of two differential concatenations.
8. according to the novel mixed type dc circuit breaker described in claim 5 or 6, it is characterised in that described convertor unit uses
Described particular power cell structure.
Novel mixed type dc circuit breaker the most according to claim 7, it is characterised in that described convertor unit uses described
Particular power cell structure.
10. according to the novel mixed type dc circuit breaker described in claim 5 or 6, it is characterised in that described full-control type power device
Part is IGBT or IGCT.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610686720.7A CN106209039A (en) | 2016-08-18 | 2016-08-18 | A kind of novel mixed type dc circuit breaker and power cell |
| PCT/CN2016/108505 WO2018032658A1 (en) | 2016-08-18 | 2016-12-05 | Novel hybrid direct current circuit breaker and power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610686720.7A CN106209039A (en) | 2016-08-18 | 2016-08-18 | A kind of novel mixed type dc circuit breaker and power cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106209039A true CN106209039A (en) | 2016-12-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610686720.7A Pending CN106209039A (en) | 2016-08-18 | 2016-08-18 | A kind of novel mixed type dc circuit breaker and power cell |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106209039A (en) |
| WO (1) | WO2018032658A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109936352A (en) * | 2017-12-19 | 2019-06-25 | 株洲中车时代电气股份有限公司 | All solid state dc circuit breaker and its control method based on IGBT |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108768184B (en) * | 2018-04-23 | 2021-01-22 | 北京平高清大科技发展有限公司 | Switch power unit and high-voltage direct-current circuit breaker |
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|---|---|---|---|---|
| US20130009491A1 (en) * | 2010-02-03 | 2013-01-10 | Abb Technology Ag | Switching module for use in a device to limit and/or break the current of a power transmission or distribution line |
| CN103178486A (en) * | 2013-02-27 | 2013-06-26 | 国网智能电网研究院 | Direct-current breaker and cutoff method thereof |
| CN103280763A (en) * | 2013-02-27 | 2013-09-04 | 国网智能电网研究院 | Direct current circuit breaker and realization method thereof |
| CN105281303A (en) * | 2015-10-14 | 2016-01-27 | 南京南瑞继保电气有限公司 | Mixed-type high-voltage DC breaker and implementation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2985082B1 (en) * | 2011-12-23 | 2014-02-21 | Alstom Technology Ltd | MECATRONIC CIRCUIT BREAKER DEVICE AND RELATIVE TRIGGERING METHOD AND APPLICATION TO HIGH CONTINUOUS CURRENT CUTTING |
| CN104767170B (en) * | 2014-01-06 | 2018-12-11 | 国家电网公司 | A kind of hybrid high voltage DC breaker and its implementation |
| CN204681065U (en) * | 2015-04-23 | 2015-09-30 | 许继电气股份有限公司 | A kind of DC circuit breaker |
| CN104979796B (en) * | 2015-06-10 | 2018-05-04 | 许继集团有限公司 | A kind of precharge type high speed d-c circuit breaker and its control method |
| CN105262068A (en) * | 2015-10-14 | 2016-01-20 | 南京南瑞继保电气有限公司 | High-voltage DC breaker and control method thereof |
-
2016
- 2016-08-18 CN CN201610686720.7A patent/CN106209039A/en active Pending
- 2016-12-05 WO PCT/CN2016/108505 patent/WO2018032658A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130009491A1 (en) * | 2010-02-03 | 2013-01-10 | Abb Technology Ag | Switching module for use in a device to limit and/or break the current of a power transmission or distribution line |
| CN103178486A (en) * | 2013-02-27 | 2013-06-26 | 国网智能电网研究院 | Direct-current breaker and cutoff method thereof |
| CN103280763A (en) * | 2013-02-27 | 2013-09-04 | 国网智能电网研究院 | Direct current circuit breaker and realization method thereof |
| CN105281303A (en) * | 2015-10-14 | 2016-01-27 | 南京南瑞继保电气有限公司 | Mixed-type high-voltage DC breaker and implementation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109936352A (en) * | 2017-12-19 | 2019-06-25 | 株洲中车时代电气股份有限公司 | All solid state dc circuit breaker and its control method based on IGBT |
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| Publication number | Publication date |
|---|---|
| WO2018032658A1 (en) | 2018-02-22 |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161207 |
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