CN106026012B - A kind of mixing type active type high voltage DC breaker - Google Patents
A kind of mixing type active type high voltage DC breaker Download PDFInfo
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- CN106026012B CN106026012B CN201610497419.1A CN201610497419A CN106026012B CN 106026012 B CN106026012 B CN 106026012B CN 201610497419 A CN201610497419 A CN 201610497419A CN 106026012 B CN106026012 B CN 106026012B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention provides a kind of mixing type active type high voltage DC breaker, including main branch in parallel, change of current branch road and power consumption branch road, and current-limiting inductance, remaining DC current breaker and protection to use high voltage ignition ball gap.The circuit topological structure of dc circuit breaker of the present invention is simple, it is easy, safe and reliable to control, is swift in motion, and the power electronic devices used is mainly half control and does not control type, the quantity of power electronic devices control triggers circuit is considerably reduced, technology maturation, is easily achieved；Through-current capability is big, drop-out current ability is strong, withstanding voltage grade is high; extended capability is strong, and employ cost is cheap, high voltage ignition ball gap of technology maturation as electric discharge and protection switch, largely reduce cost; reliability is increased, protects equipment safety.
Description
【Technical field】
The present invention relates to a kind of dc circuit breaker of HVDC transmission system, more particularly to a kind of mixing type active type
High voltage DC breaker.
【Background technology】
With the rapid development of Power Electronic Technique, based on all-controlling power electronics device and modularization multi-level converter
The flexible DC power transmission of technology, thoroughly solve the problems, such as commutation failure existing for conventional high-tension direct current transportation receiving end, and can be independent
Quickly control is transmitted active and idle, drastically increases the flexibility of transmission of electricity.It can particularly realize in recent years more electric
Source power and the powered multi-terminal direct current transmission system of more drop points it is of increased attention, and high voltage DC breaker be can
Realize one of key technology of multi-terminal direct current transmission system networking.
The HVDC change-over switch for only shifting at present or cut-offfing load current is successfully applied to DC engineering field
, but its requirement that can not meet Multi-end flexible direct current transmission system on break (ZL200820029503.1).For opening
The high voltage DC breaker of disconnected short circuit current is then always also in conceptual phase.Wherein ABB proposes to be isolated based on Quick mechanical
The hybrid scheme (CN102687221B) connected with all-controlling power electronics device IGBT is switched, and state's net is then proposed and is based on
High speed machine disconnecting switch and the hybrid scheme of large power all-controlled type power electronic devices IGBT full-bridges cascade
(CN104635151A).In above-mentioned high voltage DC breaker scheme, on the one hand, need to configure substantial amounts of full-control type power electronic
Device IGBT, but the technical merit of current full-control type power device is limited by, its price is very expensive, and IGBT voltage electricity
Parameter is flowed far away from half control type power device IGCT, therefore is not suitable for very much largely pushing away in HVDC transmission system engineering
It is wide to use.On the other hand, with the rise of DC transmission system voltage class, to block IGBT in higher voltage ABB schemes
The quantity of series connection will also roll up, it is contemplated that opening with turn off process for IGBT is all Microsecond grade, its series control it is same
Step sex chromosome mosaicism also protrudes therewith.
In addition, patent CN104767170A and CN104767171A propose two kinds of similar hybrid dc circuit breaker sides
Case, wherein the former need to use two sets of capacitor banks and two sets of charging devices, the latter has then used six groups of thyristor valves, greatly
Add the manufacturing cost of dc circuit breaker.Particularly, both series thyristor both ends all do not have anti-paralleled diode, although
The turn-off function of DC current can be equally realized, but in turn off process, it is brilliant during being especially off short circuit current
Brake tube can go out very big reverse recovery current, and very high Reverse recovery voltage occurs in IGCT both ends, and this comes to IGCT
Say in the presence of the problem of easily damaging.Equally, there is also the change because of discharge current for the thyristor valve in both LC discharge loops
The risk that rate is too high and damages.
【The content of the invention】
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of mixing type active type high voltage DC breaker,
The circuit topological structure of dc circuit breaker of the present invention is simple, it is easy, safe and reliable to control, is swift in motion.
To achieve the above objectives, the present invention, which adopts the following technical scheme that, is achieved：
A kind of mixing type active type high voltage DC breaker, include parallel connection main branch, change of current branch road, power consumption branch road and
High voltage ignition ball gap GAP is used in protection3, and current-limiting inductance L1With remaining DC current breaker BR；Current-limiting inductance L1It is straight with residue
Flow after tie breaker BR series connection with main branch in parallel, change of current branch road, consume energy branch road and protection high voltage ignition ball gap GAP3
Connection；
The high voltage DC breaker be connected in series with straight-flow system, main branch include series connection Quick mechanical isolation
Switch QS and electric current shift module S；The change of current branch road is bridge convertor branch road, by two groups of thyristor valve branch roads, two group of two pole
Pipe valve and damping circuit branch road, two groups of electric discharges are formed with high voltage ignition ball gap branch road and LC branch roads.
Further, in described change of current branch, first group of thyristor valve TH1With second group of thyristor valve TH2Differential concatenation connects
Form tie point, first group of diode valve VD1, damping circuit LVD1With second group of diode valve VD2, damping circuit LVD2Reversely
It is connected in series and forms the second branch road；First group of thyristor valve TH1With first group of diode valve VD1In the opposite direction, second group of IGCT
Valve TH2With second group of diode valve VD2In the opposite direction；
First group of high voltage ignition ball gap GAP1With second group of high voltage ignition ball gap GAP2It is connected in series and forms the 3rd branch road；
Tie point, the second branch road midpoint are connected and are connected with one end of LC branch roads, the other end of LC branch roads and the 3rd
Road midpoint is connected；Tie point, the second branch road, the 3rd branch road, three branch road both ends are respectively connected together.
Further, the electric current shift module S is reversely connected in series to form by two groups of IGBT valve modules VS, the IGBT valve modules
VS by least one all-controlling power electronics device IGBT and at least one full-control type equalizer circuit it is in parallel respectively after connect again, so
Afterwards again with arrester RVParallel connection is formed.
Further, the full-control type equalizer circuit is by static state voltage equipoise circuit RSIt is described with dynamic voltage-balancing composition in parallel
Dynamic voltage-balancing is by dynamic capacity CD, dynamic electric resistor RDWith dynamic diode DDForm.
Further, first group of thyristor valve TH1, second group of thyristor valve TH2By at least one half control type electric power electricity
It is in series again after sub- device IGCT T is in parallel with least one set of half control type equalizer circuit difference；The half control type equalizer circuit
By static state voltage equipoise circuit RSTWith dynamic voltage-balancing composition in parallel, the dynamic voltage-balancing is by Absorption Capacitance CDTIt is electric with absorbing
Hinder RDTIt is in series.
Further, first group of diode valve VD1With second group of diode valve VD2Type electric power is not controlled by least one
Electronic device diode D with least one set do not control type equalizer circuit respectively it is in parallel after it is in series again；It is described not control the equal piezoelectricity of type
It route static state voltage equipoise circuit RSDWith dynamic voltage-balancing composition in parallel；The dynamic voltage-balancing is by Absorption Capacitance CDDAnd absorption
Resistance RDDIt is in series.
Further, the change of current branch road, it is characterised in that：First group of thyristor valve TH1, second group of thyristor valve
TH2, first group of diode valve VD1With second group of diode valve VD2In not control type power electronic device diode D share it is a set of
Equalizer circuit.
Further, the power consumption branch route Zinc-Oxide Arrester MOV is formed.
Further, change of current inductance L and commutation capacitor the C composition of the LC branch route series connection, commutation capacitor C are precharged to
Setting value.
Compared with prior art, the beneficial effect that reaches of the present invention is：
1st, predominantly half control type and not control type power electronic device used in direct-current breaker topology provided by the present invention
Part, technology maturation, it is easy to accomplish, and greatly reduce manufacturing cost；
2nd, the full-control type used in direct-current breaker topology provided by the present invention and half control type power electronic devices be all
Greatly reduce, reduce the requirement to controlling triggering system, drastically increase the reliability of whole device, and reduce control
The manufacturing cost of triggering system.
3rd, diode valve branch road provided by the present invention, the Reverse recovery in thyristor valve turn off process can greatly be reduced
Electric current and Reverse recovery voltage, overcome and the transient state of thyristor valve is impacted when LC branch roads discharge in turn off process, avoid crystalline substance
The damage of gate tube valve.
4th, diode valve provided by the present invention and damping circuit series arm, can be provided in turn off process for thyristor valve
Backward voltage, shorten turn-off time of IGCT, improve the break performance of dc circuit breaker.
5th, high voltage ignition ball gap is used in electric discharge provided by the present invention, can suitably increase the peak value of the discharge current of LC branch roads,
And do not limited by discharge current rate of change, so as to improve the connecting-disconnecting function of dc circuit breaker.
6th, high voltage ignition ball gap is used in protection provided by the present invention, can exceed high voltage DC breaker in short circuit current
During turn-off capacity, high voltage ignition ball gap of lighting a fire immediately, so as to bypass thyristor valve and diode valve, short circuit current is avoided to brilliant lock
The damage of pipe valve and diode valve.
7th, dc circuit breaker structure provided by the present invention is novel, it is simple, safe and reliable to control, is swift in motion, and cut-offs electricity
Stream ability is strong, and withstanding voltage grade is high, and is readily extended to different voltage levels direct current power networks.
The present invention also has the characteristics that：
1. connected current-limiting inductance L in the fore-end of high voltage DC breaker1, to limit straight-flow system short circuit currents
Climbing, ensure high voltage DC breaker in equipment safety；
2. the maximum of LC branch road discharge currents is set to be more than short circuit current and thyristor valve TH1(or TH2) Reverse recovery electricity
Maximum sum is flowed, ensures that current in thyristor realizes reliable zero passage；
3. in thyristor valve TH1(or TH2) both ends anti-paralleled diode valve VD1(or VD2), it is ensured that discharge current is more than short
The part of road electric current flows through diode valve branch road, ensures the equipment safety of thyristor valve；
4. in diode valve VD1(or VD2) branch road connected damping circuit LVD1(or LVD2), give thyristor valve TH1(or
TH2) backward voltage is provided, accelerate the reversely restoring process of IGCT, shorten the turn-off time of thyristor valve；
5. in thyristor valve both ends parallel high voltage ignition ball gap GAP3, when realizing that short circuit current is excessive, bypass thyristor valve
And diode valve, ensure the equipment safety of thyristor valve and diode valve；
6. cut-off the last process of short circuit current, the remaining direct current of remaining dc circuit breaker cut-out in high voltage DC breaker
Electric current, complete straight-flow system and the electrical isolation of trouble point.
【Brief description of the drawings】
Fig. 1 is the topology diagram of high voltage DC breaker provided by the invention；
Fig. 2 is the embodiment of electric current shift module provided by the invention；
Fig. 3 is the embodiment of thyristor valve provided by the invention；
Fig. 4 is the embodiment of diode valve provided by the invention；
Fig. 5 is the embodiment that thyristor valve provided by the invention shares equalizer circuit with diode valve；
Fig. 6 is the disjunction principle schematic of dc circuit breaker provided by the invention；
In figure：L1- current-limiting inductance；BR- residue DC current breakers；QS- Quick mechanical disconnecting switch；S- electric currents shift
Module；TH1- the first group thyristor valve；TH2- the second group thyristor valve；VD1- the first group diode valve；VD2- the second group diode
Valve；LVD1- the first group damping circuit；LVD2- the second group damping circuit；L- change of current inductance；C- commutation capacitors；MOV- zinc oxide is taken shelter from the thunder
Device：GAP1- the first group electric discharge high voltage ignition ball gap；GAP2- the second group electric discharge high voltage ignition ball gap；GAP3- protection high pressures
Ignition ball gap.
【Embodiment】
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, but not as the limit to the present invention
It is fixed.
As shown in figure 1, the present invention provides a kind of high voltage DC breaker, the high voltage DC breaker is shifted based on electric current
Principle, including critical piece have parallel connection main branch, change of current branch road and power consumption branch road, accessory current limiting inductance L1, it is surplus
High voltage ignition ball gap GAP is used in remaining DC current breaker BR and protection3.The high voltage DC breaker is connected in series in direct current system
In system, the main branch includes the Quick mechanical disconnecting switch QS and electric current shift module S of series connection.The change of current branch road is bridge
Formula change of current branch road；The power consumption branch route Zinc-Oxide Arrester MOV is formed.
First group of thyristor valve TH1With second group of thyristor valve TH2Differential concatenation connects and composes a branch road, first group two
Pole pipe valve VD1, damping circuit LVD1With second group of diode valve VD2, damping circuit LVD2Differential concatenation connects and composes another branch
Road；Thyristor valve TH1(or TH2) and diode valve VD1(or VD2) in opposite direction；The midpoint of two branch roads is connected；It is described
The midpoint of two branch roads is connected with one end of LC branch roads；First group of high voltage ignition ball gap GAP1With second group of high voltage ignition ball gap
GAP2The branch road midpoint for being connected in series composition is connected with the other end of LC branch roads；Remove outside LC branch roads, remaining three branch road both ends
It is respectively connected together.
Further, as shown in Fig. 2 the electric current shift module S is reversely connected in series to form by two groups of IGBT valve modules VS.Institute
IGBT valve modules VS is stated by least one all-controlling power electronics device IGBT and at least one full-control type equalizer circuit to be distinguished simultaneously
Connected again after connection, then again with arrester RVParallel connection is formed.The full-control type equalizer circuit is by static state voltage equipoise circuit RSWith dynamic
Volt circuit is in parallel to be formed.The dynamic voltage-balancing is by dynamic capacity CD, dynamic electric resistor RDWith dynamic diode DDForm.
Further, as shown in figure 1, the change of current branch road includes two groups of thyristor valve branch roads, two groups of diode valves and resistance
Buddhist nun's inductive branch, two groups of high voltage ignition ball gap branch roads and LC branch roads.The change of current inductance L and commutation capacitor of the LC branch route series connection
C is formed, and commutation capacitor C is precharged to setting value.
As shown in figure 3, the thyristor valve TH1(or TH2) by least one half control type power electronic devices IGCT T with
It is in series again after at least one set of half control type equalizer circuit difference is in parallel.The half control type equalizer circuit is by static state voltage equipoise circuit RST
With dynamic voltage-balancing composition in parallel.The dynamic voltage-balancing is by Absorption Capacitance CDTWith absorption resistance RDTIt is in series.
As shown in figure 4, the diode valve VD1(or VD2) by least one not control type power electronic device diode D with
At least one set do not control type equalizer circuit it is in parallel respectively after it is in series again.The type equalizer circuit of not controlling is by static state voltage equipoise circuit RSD
With dynamic voltage-balancing composition in parallel.The dynamic voltage-balancing is by Absorption Capacitance CDDWith absorption resistance RDDIt is in series.
As shown in figure 5, to reduce cost, half control type power electronic devices IGCT T in the thyristor valve and described
Not control type power electronic device diode D in diode valve can share a set of equalizer circuit.
The kind high voltage DC breaker circuit topological structure of the present invention is simple, it is easy, safe and reliable to control, is swift in motion,
And the power electronic devices used is mainly half control and does not control type, power electronic devices control triggers circuit is considerably reduced
Quantity, technology maturation, it is easily achieved, through-current capability is big, drop-out current ability is strong, withstanding voltage grade is high, extended capability is strong；And
And employ cost is cheap, high voltage ignition ball gap of technology maturation as electric discharge and protection switch, largely reduce into
This, increases reliability, protects equipment safety.
The operation principle of high voltage DC breaker proposed by the present invention is：
As shown in fig. 6, technical scheme provided by the present invention consists predominantly of main branch, change of current branch road and power consumption branch road three
Bar parallel branch.Wherein main branch is mainly by Quick mechanical disconnecting switch and a small amount of all-controlling power electronics device IGBT series connection structures
Into for conducting direct current system loading electric current, because mechanical switch On-resistance is small, IGBT quantity make it that HVDC is breaking less
The on-state loss of device is smaller.Change of current branch road is divided into two parts：Part I is used for short time carrying DC system fault electric current, main
To be made up of multiple half control type power electronic devices Thyristors in series；Part II is used to provide artificial zero crossing, by change of current electricity
Feel L, commutation capacitor C and high voltage ignition ball gap GAP1(or GAP2) be composed in series.The branch that consumes energy route multigroup Zinc-Oxide Arrester group
Into the big energy that inductive element stores in absorption straight-flow system.
Detailed process is as follows：
1) as shown in Fig. 6 (a), when straight-flow system normal operation, remaining DC current breaker BR and Quick mechanical every
Leave and close QS closures, all IGBT devices in electric current shift module S are in triggering and conducting state；Steady-state current first flows through current limliting
Reactor L1With remaining DC current breaker BR, then the switch QS of the high speed machine through being connected in series in main branch and electric current transfer
Module S；In straight-flow system during normal operation, the commutation capacitor C in electric current transfer branch road is charged to setting value；
2) when unilateral short trouble occurs for straight-flow system：
1. when straight-flow system dc circuit breaker side occur ground short circuit failure when, when the sense of current be from a left side to
The right side, then the thyristor valve TH in branch road is shifted to electric current1Application trigger pulse (or when the sense of current is from right to left, to electric current
Shift the thyristor valve TH in branch road2Apply trigger pulse)；IGBT all in locking main branch electric current shift module S again；With
Disjunction Quick mechanical disconnecting switch QS afterwards.
2. when the IGBT valve module VB both end voltages in the electric current shift module S of main branch are higher than arrester RVAction electricity
During pressure, arrester RVAct immediately, to limit the voltage at electric current shift module S both ends, as shown in Figure 2；As arrester RVResidual voltage
Higher than thyristor valve TH1(or TH2) minimum conduct positive voltage, and hold time more than thyristor valve TH1(or TH2) lead
During the logical time, thyristor valve TH1(or TH2) will be normal open-minded, the electric current for flowing through main branch starts to thyristor valve TH1(or TH2)
With diode valve VD2(or VD1) transfer, as shown in Fig. 6 (b).
3. maintain thyristor valve TH1(or TH2) 2~3ms of conducting, ensure that Quick mechanical disconnecting switch QS produces tolerance enough
Straight-flow system overvoltage open away from；Trigger the high voltage ignition ball gap GAP in change of current branch road1(or GAP2), as shown in Fig. 6 (c).Cause
Thyristor valve TH1(or TH2) impedance value of branch road is less than diode valve VD1(or VD2) branch road, then LC branch roads can be to thyristor valve
TH1(or TH2) inverse injection discharge current, thyristor valve TH1(or TH2) electric current is gradually reduced to zero.
4. as thyristor valve TH1(or TH2) electric current it is near zero when, because of thyristor valve TH1(or TH2) it is unable to reverse flow energization
Stream, then discharge current can be from thyristor valve TH more than the part of fault current1(or TH2) to diode valve VD1(or VD2) flow through,
Diode valve VD1(or VD2) branch road electric current rapid increase.Because of diode valve VD1(or VD2) damping circuit L be present in branch roadVD1
(or LVD2), then thyristor valve TH1(or TH2) both ends can bear backward voltage, ensure thyristor valve TH1(or TH2) zero passage is reliable
Shut-off, as shown in Fig. 6 (d).
5. short circuit current is from thyristor valve TH1(or TH2) to by GAP1(or GAP2), commutation capacitor C, change of current inductance L and two
Pole pipe valve VD2(or VD1) form loop transfer when, progressively commutation capacitor C is charged, until commutation capacitor C polarity is anti-
Turn, as shown in Fig. 6 (e).When its amplitude reaches lightning arrestor movement voltage, arrester acts immediately, and electric current is transferred to arrester
In MOV, as shown in Fig. 6 (f).
6. arrester MOV, which will be consumed, absorbs perceptual energy remaining in straight-flow system, the electric current of high voltage DC breaker is treated
When dropping to predetermined value, disjunction residue DC current breaker BR, the high voltage DC breaker completes disjunction.
Finally it should be noted that：Above example is merely to illustrate technical scheme rather than its limitations, to the greatest extent
The present invention is described in detail with reference to above-described embodiment for pipe, those of ordinary skills in the art should understand that：Still may be used
Modified or equivalent substitution with the embodiment to the present invention, and repaiied without departing from any of spirit and scope of the invention
Change or equivalent substitution, it all should cover among present claims scope.
Claims (8)
- A kind of 1. mixing type active type high voltage DC breaker, it is characterised in that：Main branch, change of current branch road, consumption including parallel connection High voltage ignition ball gap GAP is used in energy branch road and protection3, and current-limiting inductance L1With remaining DC current breaker BR；Current-limiting inductance L1 After being connected with remaining DC current breaker BR with main branch in parallel, change of current branch road, consume energy branch road and protection high-tension ignition Ball gap GAP3Connection；The high voltage DC breaker is connected in series in straight-flow system, and main branch includes the Quick mechanical disconnecting switch QS of series connection With electric current shift module S；The change of current branch road is bridge convertor branch road, by two groups of thyristor valve branch roads, two groups of diode valves and Damping circuit branch road, two groups of electric discharges are formed with high voltage ignition ball gap branch road and LC branch roads；In described change of current branch road, first group of thyristor valve TH1With second group of thyristor valve TH2Differential concatenation connects and composes first Branch road, first group of diode valve VD1, damping circuit LVD1With second group of diode valve VD2, damping circuit LVD2Differential concatenation connects Form the second branch road；First group of thyristor valve TH1With first group of diode valve VD1In the opposite direction, second group of thyristor valve TH2With Second group of diode valve VD2In the opposite direction；First group of high voltage ignition ball gap GAP1With second group of high voltage ignition ball gap GAP2It is connected in series and forms the 3rd branch road；Tie point, the second branch road midpoint are connected and are connected with one end of LC branch roads, in the other end of LC branch roads and the 3rd branch road Point is connected；Tie point, the second branch road, the 3rd branch road, three branch road both ends are respectively connected together.
- 2. mixing type active type high voltage DC breaker as claimed in claim 1, it is characterised in that：The electric current shift module S is reversely connected in series to form by two groups of IGBT valve modules VS, and the IGBT valve modules VS is by least one all-controlling power electronics device Connected again after IGBT and at least one full-control type equalizer circuit are in parallel respectively, then again with arrester RVParallel connection is formed.
- 3. mixing type active type high voltage DC breaker as claimed in claim 2, it is characterised in that：The full-control type is pressed Circuit is by static state voltage equipoise circuit RSWith dynamic voltage-balancing composition in parallel, the dynamic voltage-balancing is by dynamic capacity CD, dynamic electric Hinder RDWith dynamic diode DDForm.
- 4. mixing type active type high voltage DC breaker as claimed in claim 1, it is characterised in that：First group of IGCT Valve TH1, second group of thyristor valve TH2It is equal by least one half control type power electronic devices IGCT T and at least one set of half control type It is in series again after volt circuit difference is in parallel；The half control type equalizer circuit is by static state voltage equipoise circuit RSTWith dynamic voltage-balancing simultaneously Connection is formed, and the dynamic voltage-balancing is by Absorption Capacitance CDTWith absorption resistance RDTIt is in series.
- 5. mixing type active type high voltage DC breaker as claimed in claim 1, it is characterised in that：First group of diode Valve VD1With second group of diode valve VD2By at least one not control type power electronic device diode D type is not controlled with least one set of It is in series again after equalizer circuit difference is in parallel；The type equalizer circuit of not controlling is by static state voltage equipoise circuit RSDAnd dynamic voltage-balancing Parallel connection is formed；The dynamic voltage-balancing is by Absorption Capacitance CDDWith absorption resistance RDDIt is in series.
- 6. mixing type active type high voltage DC breaker as claimed in claim 1, it is characterised in that：First group of IGCT Valve TH1, second group of thyristor valve TH2, first group of diode valve VD1With second group of diode valve VD2In not control type power electronic Device diode D shares a set of equalizer circuit.
- 7. mixing type active type high voltage DC breaker as claimed in claim 1, it is characterised in that：The power consumption branch route oxygen Change zinc arrester MOV to form.
- 8. mixing type active type high voltage DC breaker as claimed in claim 1, it is characterised in that：The LC branch route series connection Change of current inductance L and commutation capacitor C compositions, commutation capacitor C is precharged to setting value.
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| CN201610497419.1A CN106026012B (en) | 2016-06-29 | 2016-06-29 | A kind of mixing type active type high voltage DC breaker |
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| CN201610497419.1A CN106026012B (en) | 2016-06-29 | 2016-06-29 | A kind of mixing type active type high voltage DC breaker |
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| CN107666140B (en) * | 2017-09-01 | 2019-03-26 | 天津大学 | A kind of combined DC breaker and its control method with multiple terminals |
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| CN111308300B (en) * | 2019-11-14 | 2022-06-28 | 南京南瑞继保电气有限公司 | Direct-current breaker semiconductor device online monitoring device and control method thereof |
| CN113131763A (en) * | 2020-01-10 | 2021-07-16 | 全球能源互联网研究院有限公司 | Hybrid converter topological structure with controllable turn-off at alternating current side and control method |
| CN112531666A (en) * | 2020-11-26 | 2021-03-19 | 广东电网有限责任公司佛山供电局 | Direct current limiter topological structure and direct current limiter thereof |
| CN112968420B (en) * | 2021-02-18 | 2022-09-27 | 天津大学 | Thyristor type hybrid direct current circuit breaker and control method thereof |
| CN114944642B (en) * | 2022-06-09 | 2023-05-30 | 西南交通大学 | Compound energy consumption device based on liquid metal |
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| US9276401B2 (en) * | 2013-06-28 | 2016-03-01 | Hamilton Sundstrand Corporation | Solid state circuit-breaker switch devices |
| CN103337851B (en) * | 2013-07-04 | 2015-09-23 | 国家电网公司 | A kind of half control type active injection current high voltage direct current breaker and its implementation |
| CN104767171B (en) * | 2014-01-06 | 2018-01-19 | 国家电网公司 | A kind of high voltage DC breaker and its implementation |
| CN104767194B (en) * | 2015-04-16 | 2018-10-09 | 国网河南省电力公司平顶山供电公司 | A kind of high voltage power transmission current conversion station over-pressure safety device |
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