CN103681039B - A kind of high-voltage direct-current breaker topology - Google Patents
A kind of high-voltage direct-current breaker topology Download PDFInfo
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- CN103681039B CN103681039B CN201310646962.XA CN201310646962A CN103681039B CN 103681039 B CN103681039 B CN 103681039B CN 201310646962 A CN201310646962 A CN 201310646962A CN 103681039 B CN103681039 B CN 103681039B
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Abstract
A kind of high-voltage direct-current breaker topology, is made up of the first current path (1) and the second current path (2).First current path (1) is composed in series by least one electronic power switch module (3) and mechanical switch (4), and the second current path (2) is made up of capacitance group (C) and cascade connection type electric capacity subelement switching module (5).Cascade connection type electric capacity subelement switching module (5) is composed in series by multiple subelement (6).Electronic power switch module (3) has multiple constituted mode with the subelement (6) of modularization subelement part in series (5).The first leading-out terminal that first leading-out terminal and first leading-out terminal of the second current path (2) of the first current path (1) are connected as DC circuit breaker is connected with DC power transmission line, and the second leading-out terminal of the first current path (1) is connected with the other end of DC transmission line with second leading-out terminal of the second leading-out terminal of the second current path (2) as DC circuit breaker.
Description
Technical field
The present invention relates to a kind of circuit breaker, be specifically related to a kind of direct current interruption topology.
Background technology
Fast DC Circuit Breaker is one of key equipment ensureing direct current transmission and distribution system and direct current network system stability safe and reliable operation.Be that the electric current of direct current system does not exist natural zero-crossing point with AC system difference, the natural zero-crossing point of electric current therefore cannot be utilized in direct current system as AC system to turn off, therefore the problem of cut-offfing of direct current is a problem being worth research always.
Current breaking direct current has two kinds of modes usually, and the first is pure power electronics circuit breaker, as patent CN102870181A, utilizes and high-powerly turns off power electronic device, direct disjunction direct current.Utilize the solid circuit breaker that this principle manufactures, although can meet the requirement of multiterminal flexible direct current system in time, the loss when normally is excessive, and economy is poor.
The second is mixing Circuit breaker technology, namely on the basis of traditional interchange mechanical chopper, by increasing auxiliary Power Electronic Circuit, dropping into current-limiting resistance to reduce short circuit current or superimposed oscillation electric current on the direct current cut-offfing arc gap, utilizing during current over-zero and cut-off circuit.Utilize the hybrid circuit breaker that this principle manufactures, it has particular/special requirement to mechanical switch, the more difficult requirement meeting DC transmission system on break-time.
The one that the patent (WO2013/093066A1) of Siemens Company proposes mixes Circuit breaker technology, primary path is connected mechanical switch and power electronics controls device entirely, another bypass is made up of electric capacity, when fault current being detected, on primary path, power electronics controls device disconnection entirely, mechanical switch also starts to cut-off, fault current charges to bypass shunt capacitance, the shunt capacitance of this circuit can not value too small, otherwise mechanical switch is opened not yet completely, if shunt capacitance too fast meeting of voltage rise under fault current charging exceedes mechanical switch and power electronic device bears electric pressure.But capacitance value large time, the speed of cut-offfing will be affected.
The one that the patent (WO2011141054A1) of ABB AB proposes mixes Circuit breaker technology, primary path is connected mechanical switch and power electronics controls device entirely, another bypass is composed in parallel by lightning arrester and crimping IGBT, when fault current being detected, the whole conducting of crimping IGBT in bypass, power electronics afterwards on primary path is entirely controlled device and is disconnected, mechanical switch also starts to turn off, by the time mechanical switch closes have no progeny completely, crimping IGBT turns off, lightning arrester place in circuit suppresses short circuit current, this circuit breaker cut-offs speed, but the crimping IGBT of whole bypass bears voltage sum must be greater than DC power transmission line initial voltage, this needs a large amount of crimping IGBT series connection, cause the cost of whole DC circuit breaker higher.
And above-mentioned two kinds of patent major loops all must adopt full control switching device to connect with mechanical switch, still have larger conduction loss when causing normal.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, propose a kind of hybrid DC circuit breaker.It is low that the present invention has holistic cost, the feature that during steady operation, loss is little, can replace the full control device on initial current path if desired, reduce normal running wastage with half control device.During appearance short trouble, the present invention is without arc cutting, and response rapidly.
The technical solution used in the present invention is:
A kind of mixed DC circuit breaker, is characterized in that: described DC circuit breaker is made up of the first current path and the second current path.The first leading-out terminal that first leading-out terminal of the first current path is connected as DC circuit breaker with the first leading-out terminal of the second current path is connected with DC power transmission line, second leading-out terminal of the first current path 1 is connected with the second leading-out terminal of the second current path, and the second leading-out terminal as DC circuit breaker is connected with the other end of DC transmission line.
The another kind of connected mode of described DC circuit breaker is: can be connected with inductance one end after the first leading-out terminal of the first current path is connected with the first leading-out terminal of the second current path, the other end of inductance is connected with DC power transmission line as the first leading-out terminal of DC circuit breaker
Second leading-out terminal of the first current path 1 also can be connected with inductance one end after being connected with the second leading-out terminal of the second current path, and the other end of inductance is connected with the other end of DC transmission line as the second leading-out terminal of DC circuit breaker.
First current path is composed in series by electronic power switch module and mechanical switch.Described mechanical switch module comprises at least one mechanical switch series component, and described electronic power switch module comprises the power electronic device series component of at least one.One end of mechanical switch module is connected with one end of electronic power switch module, and the other end of mechanical switch module, as the first leading-out terminal of the first current path, is connected with DC power transmission line; The other end of electronic power switch module, as the second leading-out terminal of the first current path, is connected the second leading-out terminal as DC circuit breaker with the second leading-out terminal of the second current blocking path.
Second current path is composed in series by capacitor cell and cascade connection type electric capacity subelement switching module.One end of the capacitor cell of the second described current path is connected with the first leading-out terminal of cascade connection type electric capacity subelement switching module, the other end of the capacitor cell of the second current path is connected with inductance one end as the first leading-out terminal of the second current path, and the other end of the cascade connection type electric capacity subelement switching module of the second current path is connected with the second leading-out terminal of the first current path as the second leading-out terminal of the second current path.
The electronic power switch module of the first described current path can be made up of one or more wholly-controled device.Also can be made up of two groups of wholly-controled device differential concatenations, often organize wholly-controled device and be composed in series by one or more wholly-controled device.The electronic power switch module of the first described current path also can be made up of one or more half control type device.The capacitor cell of the second described current path is made up of one or more capacitor series and parallel.Also entirely can control device by power electronics, diode and one and multiple electric capacity composition, thus possess the ability of Two-way charging and the electric discharge of bilateral construction current path.
When the electric power electronic module of the first current path adopts one or more half control type devices in series, the capacitor cell two ends of the second described current path also can pre-charging device in parallel, thus can discharge when fault, make the electric current on the first current path be transferred to rapidly the second current path.Thus create zero-crossing switching condition to the half control type devices in series type electric power electronic module of the first current path.
Subelement in described cascade connection type electric capacity subelement switching module has various structures building form, and first kind subelement is by capacitance group, and diode group and wholly-controled device group form.One end of capacitance group is connected with the negative electrode of diode group, the other end of capacitance group is connected with the emitter of wholly-controled device group, the second leading-out terminal as first kind subelement is drawn, the anode of diode group is connected with the collector electrode of wholly-controled device group, as the first leading-out terminal of first kind subelement.Described diode group is made up of one or more Diode series, and described wholly-controled device group is composed in series by one or more wholly-controled device, and described capacitance group is made up of one or more electric capacity connection in series-parallel.
Second Type subelement by capacitance group, the first diode group, the second diode group, the first wholly-controled device group, and the second wholly-controled device group composition.The negative electrode of the first diode group is connected with the negative electrode of the second diode group and is then connected with one end of capacitance group, the emitter of the first wholly-controled device group is connected with the second wholly-controled device group and is then connected with the other end of capacitance group, the anode of the first diode group is connected the first leading-out terminal as Second Type subelement with the collector electrode of the first wholly-controled device group, the anode of the second diode group is connected the second leading-out terminal as Second Type subelement with the collector electrode of the second wholly-controled device group.Described diode group is made up of one or more Diode series, and described wholly-controled device group is composed in series by one or more wholly-controled device, and described capacitance group is made up of one or more electric capacity connection in series-parallel.Described Second Type first diode group and the first wholly-controled device group position can be exchanged, and the position of the second diode group and the first wholly-controled device group also can be exchanged.
3rd sub-unit by capacitance group, the first wholly-controled device group, the second wholly-controled device group 77, differential concatenation wholly-controled device group.The collector electrode of the first wholly-controled device group is connected with one end of capacitance group, the other end of capacitance group is connected with the collector electrode of the second wholly-controled device group, the emitter of the second wholly-controled device group is connected with one end collector electrode of differential concatenation wholly-controled device group, as the second leading-out terminal of the 3rd sub-unit, the emitter of the first wholly-controled device group is connected with the other end emitter of differential concatenation wholly-controled device group 78, as the first leading-out terminal 81 of the 3rd sub-unit.Described wholly-controled device group is composed in series by one or more wholly-controled device, described capacitance group is made up of one or more electric capacity connection in series-parallel, the capacity type adopted is the capacity type regardless of positive-negative polarity, and described differential concatenation wholly-controled device group is made up of the first forward wholly-controled device group and the second forward wholly-controled device group differential concatenation.
4th sub-unit by capacitance group, wholly-controled device group, the first diode group, the second diode group, the 3rd diode group, the 4th diode group, and the 5th diode group composition.One end of capacitance group is connected with the anode of the first diode group, the negative electrode of the first diode is connected with the collector electrode of wholly-controled device group, the other end of capacitance group is connected with the emitter of wholly-controled device group, the anode of the second diode group is connected the first leading-out terminal as the 4th sub-unit with the negative electrode of the 3rd diode group, the negative electrode of the second diode group is connected with the collector electrode of wholly-controled device group, the anode of the 3rd diode group is connected with the emitter of wholly-controled device group, the anode of the 4th diode group is connected the second leading-out terminal as the 3rd sub-unit with the negative electrode of the 5th diode group, the negative electrode of the 4th diode group is connected with the collector electrode of wholly-controled device group, the anode of the 5th diode group is connected with the emitter of wholly-controled device group.
The first described diode group, second diode group, 3rd diode group, 4th diode group, 5th diode group is all made up of one or more Diode series, described wholly-controled device group is composed in series by one or more wholly-controled device, and described capacitance group is made up of one or more electric capacity connection in series-parallel.
5th sub-unit is by diode uncontrollable rectifier bridge, and capacitance group and inverse parallel wholly-controled device group form.
The wholly-controled device of all available band anti-paralleled diode of the diode in all kinds subelement replaces.
When the electric capacity initial voltage in all types of subelement is zero, namely start fault current at every turn and block Cheng Qian when subelement capacitance voltage is reverted to null value, can omit the diode group in first kind subelement, in the 3rd sub-unit first controls device group and second control device group entirely entirely.
When DC power transmission line is normally run, the mechanical switch module of the first current path is closure state, and the electronic power switch module of the first current path is conducting state; After line short fault being detected, the subelement of the cascade connection type electric capacity subelement switching module of the second described current path is in capacitive bypass fault current pass-through state, turn off electronic power switch module, make initial current passage current reduce to zero, then mechanical switch module starts to open.Fault current is switched to the second current path, charges to the capacitor cell of the second described current path.When time delay to mechanical switch two ends contact spacing distance enough bears large voltage, each subelement action of the cascade connection type electric capacity subelement switching module of the second described current path drops into state to the electric capacity of its capacitance group, electric capacity in each subelement is fed in the second current path fast in turn, now in the second current path, second current path electric capacity subelement charging voltage and each lightning arrester voltage superposition, to fault current current limliting, fault current is made finally to reduce to 0.
When the electronic power switch module of the first described current path is made up of one or more half control type device, pre-charging device has possessed initial voltage due to parallel connection for the capacitor cell of described second current path, after line short fault being detected, the subelement of the cascade connection type electric capacity subelement switching module of the second described current path is in capacitive bypass fault current pass-through state, second current path capacitor discharge makes the second current path electric current increase sharply, electric current on first current path is transported rapidly to the second current path, described initial current path electronic power switch module is turned off naturally.Then mechanical switch module starts to open.When enough bearing large voltage to mechanical switch two ends contact spacing distance, each subelement action of the cascade connection type electric capacity subelement switching module of the second described current path drops into state to the electric capacity in subelement capacitance group, electric capacity in each subelement is fed in the second current path fast in turn, now the second current path capacitor cell charging voltage and each lightning arrester voltage superposition in the second current path, to fault current current limliting, the electric current in inductance L is made finally to reduce to 0.
In described cascade connection type electric capacity subelement switching module, capacitance group two ends in every type subelement can voltage limiter in parallel, first current path two ends voltage limiting device in parallel, second current path capacitor cell two ends pressure limiting device in parallel, cascade connection type electric capacity subelement switching module two ends pressure limiting device in parallel.First current path first leading-out terminal pressure limiting device in parallel with between ground, the first current path second leading-out terminal pressure limiting device in parallel with between ground.
Described subelement Capacitor banks two ends pre-add charging circuit, possesses certain initial voltage before making electric capacity drop into current path, accelerates fault current turn-off speed.
The second described current path capacitor cell and described subelement Capacitor banks all can add bleeder, thus after DC line short trouble is got rid of, interior excess voltage is held in power down of can releasing fast, is convenient to again close a floodgate.
Second Type subelement described in When subunits adopts, 3rd sub-unit, 4th sub-unit, during the version of the 5th sub-unit, and when electronic power switch module in first circulation flow path adopts bidirectional switch module, this DC circuit breaker can realize bi-directional failure current blocking function.
Advantage of the present invention:
A. this direct-current breaker topology is cut-off more rapid, can realize zero electric arc and cut-off;
B. whole change of current topology can adopt conventional components, and manufacture difficulty is relatively little, and reliability is high;
C. short circuit current can control in lower level by this DC circuit breaker, thus protection system fail safe;
D. this direct-current breaker topology can reduce the impact of short circuit current on current conversion station;
E. be more easily combined with flexible direct current power transmission system, be suitable for integrated design;
F. the loss compared with pure electronic power switch formula DC circuit breaker during system worked well is less;
G., when the full control electronic power switch adopting half control device to replace on initial current path, the normal running wastage of its system can be down to lower;
H. this circuit breaker current blocking-up path adopts initial capacitor to be combined with modularization subelement switching module, and the cost of overall implementation is lower.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention;
Fig. 2 is the circuit theory diagrams in specific embodiments of the invention 1;
Fig. 3 is the circuit theory diagrams in specific embodiments of the invention 2;
Fig. 4 is the circuit theory diagrams in specific embodiments of the invention 3;
Fig. 5 is the circuit theory diagrams in specific embodiments of the invention 4;
Fig. 6 is first kind subelement electrical block diagram of the present invention;
Fig. 7 is Second Type subelement electrical block diagram of the present invention;
Fig. 8 is the 3rd sub-unit electrical block diagram of the present invention;
Fig. 9 is the 4th sub-unit electrical block diagram of the present invention;
Figure 10 is the 5th sub-unit electrical block diagram of the present invention;
Figure 11 is the 6th type units electrical block diagram of the present invention;
Figure 12 is a kind of structural representation of electronic power switch module in initial current path of the present invention;
Figure 13 is the another kind of structural representation of electronic power switch module in initial current path of the present invention;
Figure 14 is the structural representation of the embodiment of the present invention 5.
Embodiment
Below in conjunction with the drawings and the specific embodiments, the invention will be further described.
As shown in Figure 1, the present invention is made up of the first current path 1 and the second current path 2.The first leading-out terminal that first leading-out terminal and first leading-out terminal of the second current path 2 of the first current path 1 are connected as DC circuit breaker is connected with DC power transmission line, second leading-out terminal of the first current path 1 is connected with the second leading-out terminal of the second current path 2, and the second leading-out terminal as DC circuit breaker is connected with the other end of DC transmission line.
First current path 1 is composed in series by electronic power switch module 3 and mechanical switch 4.Described mechanical switch module 4 comprises at least one mechanical switch series component, and described electronic power switch module 3 comprises at least one power electronic device series component; One end of mechanical switch module 4 is connected with one end 10 of electronic power switch module 3, and the other end of mechanical switch module 4 is as the first leading-out terminal of the first current path 1; The other end of electronic power switch module 3, as the second leading-out terminal of the first current path 1, is connected the second leading-out terminal as DC circuit breaker with the second leading-out terminal of the second current blocking path 2.
Second current path 2 is composed in series by capacitor cell C and cascade connection type electric capacity subelement switching module 5.One end of described capacitor cell C is connected with the first leading-out terminal of cascade connection type electric capacity subelement switching module 5, the other end of capacitor cell C is connected with inductance one end 7 as the first leading-out terminal of the second current path 2, and cascade connection type electric capacity subelement switching module 5 other end of the second current path 2 is connected with the second leading-out terminal of the first current path as the second leading-out terminal of the second current path 2.
One of structure building form of subelement in described cascade connection type electric capacity subelement switching module 5 is the first kind subelement shown in Fig. 6: first kind subelement is made up of capacitance group 61, diode group 62 and wholly-controled device group 63.One end 64 of capacitance group 61 is connected with the negative electrode of diode group 62, the other end 65 of capacitance group 61 is connected with the emitter of wholly-controled device group 63, the second leading-out terminal 65 as first kind subelement is drawn, the anode of diode group 62 is connected with the collector electrode of wholly-controled device group 63, as the first leading-out terminal 60 of first kind subelement; Described diode group 62 is made up of one or more Diode series; Described wholly-controled device group 63 is composed in series by one or more wholly-controled device, and described capacitance group 61 is made up of one or more electric capacity connection in series-parallel.
Two of the structure building form of the subelement in described cascade connection type electric capacity subelement switching module 5 is the Second Type subelement shown in Fig. 7: Second Type subelement is made up of capacitance group 66, first diode group 67, second diode group 68, first wholly-controled device group 69 and the second wholly-controled device group 70; The negative electrode of the first diode group 67 is connected with the negative electrode of the second diode group 68 and is connected with one end 71 of capacitance group 66 afterwards, the emitter of the first wholly-controled device group 69 is connected with the second wholly-controled device group 70 and is then connected with the other end 72 of capacitance group 66, the anode of the first diode group 67 is connected with the collector electrode of the first wholly-controled device group 69, the second leading-out terminal 74 as Second Type subelement is connected with the collector electrode of the second wholly-controled device group as the anode of the first leading-out terminal 73, second diode group 68 of Second Type subelement; The first described diode group 67, second diode group 68 is made up of one or more Diode series; The first described wholly-controled device group 69 and the second wholly-controled device group 70 are composed in series by one or more wholly-controled device; Described capacitance group 66 is made up of one or more electric capacity connection in series-parallel.First diode group 67 of described Second Type subelement and the first wholly-controled device group 69 position are exchanged, and the position of the second diode group 68 and the first wholly-controled device group 69 is exchanged.The structure replacing it the subelement in rear described cascade connection type electric capacity subelement switching module is: the negative electrode of described Second Type first diode group is connected with the emitter of Second Type first wholly-controled device group, as the first leading-out terminal of Second Type subelement, the negative electrode of the second diode group is connected with the emitter of the second wholly-controled device group, as the second leading-out terminal of Second Type subelement.First diode group is connected with the anode of the second diode group and is connected with one end of capacitance group, and the collector electrode of the second wholly-controled device group is connected with the collector electrode of the first wholly-controled device group and is connected with the other end of electric capacity.
Three of the structure building form of the subelement in described cascade connection type electric capacity subelement switching module 5 is the 3rd sub-unit shown in Fig. 8: the 3rd sub-unit is made up of capacitance group 75, first wholly-controled device group 76, second holotype device group 77 and differential concatenation wholly-controled device group 78; The collector electrode of the first wholly-controled device group 76 is connected with one end 83 of capacitance group 75, the other end 84 of capacitance group 75 is connected with the collector electrode of the second wholly-controled device group 77, the emitter of the second wholly-controled device group 77 is connected with one end collector electrode of differential concatenation wholly-controled device group 78, as the second leading-out terminal 82 of the 3rd sub-unit, the emitter of the first wholly-controled device group 76 is connected with the other end emitter of differential concatenation wholly-controled device group 78, as the first leading-out terminal 81 of the 3rd sub-unit; The first described wholly-controled device group 76, second wholly-controled device group 77 is composed in series by one or more wholly-controled device; Described capacitance group 75 is made up of one or more electric capacity connection in series-parallel, and the capacity type of employing is the capacity type regardless of positive-negative polarity; Described differential concatenation wholly-controled device group 78 is made up of the first forward wholly-controled device group 79 and the second forward wholly-controled device group 80 differential concatenation.
Four of the structure building form of the subelement in described cascade connection type electric capacity subelement switching module 5 is the 4th sub-unit shown in Fig. 9: the 4th class subelement is by capacitance group 90, wholly-controled device group 91, first diode group 89, second diode group 85, the 3rd diode group 86, the 4th diode group 87, and the 5th diode group 88 forms, one end of capacitance group 90 is connected with the anode 96 of the first diode group 89, the negative electrode of the first diode group 96 is connected with the collector electrode 92 of wholly-controled device group 91, the other end of capacitance group 90 is connected with the emitter 93 of wholly-controled device group 91, the anode of the second diode group 85 is connected the first leading-out terminal as the 4th sub-unit with the negative electrode of the 3rd diode group 86, the negative electrode of the second diode group 85 is connected with the collector electrode 92 of wholly-controled device group 91, the anode of the 3rd diode group 86 is connected with the emitter 93 of wholly-controled device group, the anode of the 4th diode group 87 is connected the second leading-out terminal 95 as the 3rd sub-unit with the negative electrode of the 5th diode group 88, the negative electrode of the 4th diode group 87 is connected with the collector electrode 92 of wholly-controled device group 91, the anode of the 5th diode group 88 is connected with the emitter 93 of wholly-controled device group 91.
The first described diode group 89, second diode group the 85, three diode group the 86, four diode group the 87, five diode group 88 forms by one or more Diode series; Described wholly-controled device group 91 is composed in series by one or more wholly-controled device; Described capacitance group 90 is made up of one or more electric capacity connection in series-parallel.
Five of the structure building form of the subelement in described cascade connection type electric capacity subelement switching module 5 is the 5th sub-unit in Figure 10: the 5th sub-unit is by diode uncontrollable rectifier bridge, and capacitance group 97 and anti-series wholly-controled device group 108 form.The first diode 98 in Figure 10, second diode 99,3rd diode 100,4th diode 101 forms diode uncontrollable rectifier bridge construction, the first terminal 104 of diode uncontrollable rectifier bridge is connected with one end of capacitance group 97, second terminal 105 of diode uncontrollable rectifier bridge is connected with the other end of capacitance group 97,3rd terminal 102 of diode uncontrollable rectifier bridge is connected with one end 106 of anti-series wholly-controled device group 108, and the 4th terminal 103 of diode uncontrollable rectifier bridge is connected with the other end 107 of anti-series wholly-controled device group 108.
Specific implementation such as Figure 13 of anti-series wholly-controled device group forms, and is made up of first group of wholly-controled device 201 and second group of wholly-controled device 202 differential concatenation.
Subelement in described cascade connection type electric capacity subelement switching module can also the 6th sub-unit as shown in figure 11: the 6th sub-unit by electric capacity by bidirectional power electronic switch module 214, capacitor cell 212, first wholly-controled device group 211, second wholly-controled device group 213 forms.The collector electrode of the first wholly-controled device group is connected with capacitor cell one end, the capacitor cell other end is connected with the collector electrode of the second wholly-controled device group, the emitter of the first wholly-controled device group is connected with the first leading-out terminal 215 of bidirectional power electronic switch module 214, as the first leading-out terminal of the 6th sub-unit, the emitter of the second wholly-controled device group is connected with the second leading-out terminal 216 of bidirectional power electronic switch module 214, as the second leading-out terminal of the 6th sub-unit.
The concrete constituted mode of described bidirectional power electronic switch module 214 as shown in figure 12, first diode group 225, second diode group 226, 3rd diode group 227, 4th diode group 228 one-tenth uncontrollable rectifier bridge circuit, the common cathode 221 of uncontrollable rectifier bridge circuit is connected with the collector electrode of wholly-controled device group, the common anode pole of uncontrollable rectifier bridge circuit is connected with the emitter of wholly-controled device group, the anode of the first diode group 225 is connected the first leading-out terminal 223 as bidirectional power electronic switch module with the negative electrode of the 3rd diode group 227, the negative electrode of the second diode group 226 is connected the second leading-out terminal 224 as bidirectional power electronic switch module with the anode of the 4th diode group 228.
Embodiment 1
Figure 2 shows that embodiments of the invention 1, as shown in Figure 2, voltage source 15 is current conversion station, and resistance 16 is simulation short-circuit resistance.Basic topology of the present invention is made up of the first current path 1 and the second current path 2; The first leading-out terminal be connected as DC circuit breaker is connected with the DC power transmission line 7 of nearly current conversion station side first leading-out terminal of the first current path 1 with the first leading-out terminal of the second current path 2, and the second leading-out terminal of the first current path 1 is connected with the DC power transmission line of current conversion station side far away with second leading-out terminal of the second leading-out terminal of the second current path 2 as DC circuit breaker.Inductance L can be the inductance of the device of current conversion station own, the current-limiting inductance also can added for DC circuit breaker.
First current path 1 is composed in series by electronic power switch module 3 and mechanical switch module 4, mechanical switch module 4 in first current path 1 comprises at least one mechanical switch series component, and the electronic power switch module 3 in the first described current path 1 comprises at least one power electronic device series component.One end of mechanical switch module 4 is connected with one end 10 of electronic power switch module 3, and the other end of mechanical switch module 4 is as the first leading-out terminal of the first current path; The other end of electronic power switch module 3, as the second leading-out terminal of the first current path, is connected the second leading-out terminal as DC circuit breaker with the second leading-out terminal of the second current blocking path 2.
Second current path 2 is composed in series by capacitor cell C and cascade connection type electric capacity subelement switching module 5.One end of described capacitor cell C is connected with the first leading-out terminal of cascade connection type electric capacity subelement switching module 5, the other end of capacitor cell C is connected with inductance one end 7 as the first leading-out terminal of the second current path 2, and the other end of the cascade connection type electric capacity subelement switching module 5 of the second current path 2 is connected with the second leading-out terminal of the first current path as the second leading-out terminal of the second current path 2.
Cascade connection type electric capacity subelement switching module 5 have various structures form.First kind subelement is by capacitance group 61, and diode group 62 and wholly-controled device group 63 form.One end of capacitance group 64 is connected with the negative electrode of diode group 62, the other end 65 of capacitance group is connected with the emitter of wholly-controled device group, the second leading-out terminal 65 as first kind subelement is drawn, the anode of diode group 62 is connected with the collector electrode of wholly-controled device group, as the first leading-out terminal 60 of first kind subelement.Described diode group 62 is made up of one or more Diode series, and described wholly-controled device group 63 is composed in series by one or more wholly-controled device, and described capacitance group 64 is made up of one or more electric capacity connection in series-parallel.When full control device group conducting, the electric capacity of capacitance group 64 does not access the second current path, and when full control device group turns off, the electric capacity of capacitance group 64 accesses the second current path.
When DC power transmission line is normally run, the mechanical switch module 4 of the first current path 1 is closure state, and the electronic power switch module 3 of the first current path 1 is conducting state; After line short fault being detected, the subelement of the cascade connection type electric capacity subelement switching module 5 of the second described current path 2 is in capacitive bypass fault current pass-through state, turn off electronic power switch module 3, make the electric current of initial current path 1 reduce to zero, then mechanical switch module 4 starts to open.Fault current is switched to the second current path 2, the second described electric current is led to the capacitor cell charging of 2.When time delay to mechanical switch two ends contact spacing distance enough bears large voltage, each subelement action of the cascade connection type electric capacity subelement switching module of the second described current path drops into state to electric capacity, electric capacity in each subelement is fed in the second current path 2 fast in turn, capacitance now in the second current path 2 is become the capacitance after the capacitances in series in capacitor cell and each subelement from incipient electric capacity subelement capacitance, because capacitance reduces rapidly, fault current causes the speed of voltage rise to be accelerated to the second current path total capacitance value charging, make fault current block speed to speed, reduce to 0 rapidly.
Embodiment 2
Figure 3 shows that embodiments of the invention 2.The first current path two ends in Fig. 3, the capacitor module two ends of the second current path and cascade connection type electric capacity subelement switching module two ends are all in parallel voltage limiter.Between first leading-out terminal of the first current path 1 and ground, the second leading-out terminal pressure limiting device in parallel with between ground of the first current path 1, in order to carry out overvoltage protection to the various piece of whole DC circuit breaker.Also can optionally the local two ends of protection be being needed to increase voltage limiting device.
Embodiment 3
Figure 4 shows that embodiments of the invention 3.In Fig. 4, the electronic power switch module 3 of the first current path 1 have employed half control type device thyristor.Electronic power switch module 3 also can be made up of multiple Thyristors in series.Whole DC circuit breaker can be made like this when direct current network normally runs, and its conduction loss is lower, but does not have self-switching-off capability due to thyristor, needs to create current zero-crossing point and is turned off.Therefore, the present embodiment with the addition of pre-charge circuit at the capacitor cell C two ends of the second current path, and charging voltage nearly current conversion station side is negative, and current conversion station side far away is just.After line short fault being detected, each subelement of the cascade connection type electric capacity subelement switching module 5 of the second described current path 2 controls the conducting of device group entirely, the capacitor cell C of the second current path 2 discharges, because the electric current in inductance L can not suddenly change, and the second current path 2 causes electric current to increase rapidly because capacitor cell C discharges, therefore the electric current of the first current path 1 is transferred to rapidly the second current path 2, make the electric current of the first described current path 1 be reduced to zero rapidly, thyristor turns off naturally.Thereafter it is similar to Example 3 that fault current blocks process.
Embodiment 4
Figure 5 shows that embodiments of the invention 4.In Fig. 5, the electronic power switch module 3 of the first current path 1 have employed opposing series configuration as shown in fig. 13 that, is made up of the IGBT differential concatenation of two groups of series aiding connections, and the IGBT often organizing series aiding connection comprises one or more IGBT; Electronic power switch module 3 or adopt one or more switch module to be as shown in figure 12 composed in series.Each subelement of the cascade connection type electric capacity subelement switching module 5 of the second current path 2 adopts any one sub-unit structure in Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11.Thus make whole topological structure possess bidirectional current blocking ability.
Embodiment 5
Figure 14 be another kind of application mode of the present invention and bipolarity flexible DC power transmission time embodiment.As shown in figure 14, the first leading-out terminal 61 of the first circuit breaker 60 is connected with the positive pole on bipolar transmission line road, and the second leading-out terminal 62 of the first circuit breaker 60 is connected with simulation short-circuit resistance one end.First leading-out terminal 63 of the second circuit breaker 65 is connected with the negative pole on bipolar transmission line road, and the second leading-out terminal 64 of the second circuit breaker 65 is connected with the other end of simulation short-circuit resistance.
Claims (12)
1. a high-voltage direct-current breaker topology, is characterized in that: described DC circuit breaker is made up of the first current path (1) and the second current path (2); First leading-out terminal of the first current path (1) is connected with the first leading-out terminal of the second current path (2), and the first leading-out terminal as DC circuit breaker is connected with DC power transmission line; Second leading-out terminal of the first current path (1) is connected with the second leading-out terminal of the second current path (2), and the second leading-out terminal as DC circuit breaker is connected with the other end of DC transmission line;
Described the first current path (1) is composed in series by electronic power switch module (3) and mechanical switch module (4); Described mechanical switch module (4) comprises at least one mechanical switch series component; Described electronic power switch module (3) comprises at least one power electronic device series component; One end of mechanical switch module (4) is connected with one end (10) of electronic power switch module (3), and the other end of mechanical switch module (4) is connected with DC power transmission line as the first leading-out terminal of the first current path (1); The other end of electronic power switch module (3), as the second leading-out terminal of the first current path (1), is connected the second leading-out terminal as DC circuit breaker with the second leading-out terminal of the second current blocking path (2);
Second current path (2) is composed in series by capacitor cell (C) and cascade connection type electric capacity subelement switching module (5); One end of described capacitor cell (C) is connected with the first leading-out terminal of cascade connection type electric capacity subelement switching module (5), the other end of capacitor cell (C) is connected with one end (7) of inductance (L) as the first leading-out terminal of the second current path (2), and the other end of cascade connection type electric capacity subelement switching module (5) of the second current path (2) is connected with the second leading-out terminal of the first current path (1) as the second leading-out terminal of the second current path (2);
The electronic power switch module (3) of the first described current path is composed in series by one or more wholly-controled device;
The capacitor cell (C) of described the second current path (2) by least one capacitances in series or compose in parallel.
2. according to high-voltage direct-current breaker topology according to claim 1, it is characterized in that: described electronic power switch module (3) is made up of two groups of wholly-controled device differential concatenations, often organize wholly-controled device and be composed in series by one or more wholly-controled device.
3. according to high-voltage direct-current breaker topology according to claim 1, it is characterized in that: described electronic power switch module (3) is made up of one or more half control type device.
4. according to high-voltage direct-current breaker topology according to claim 1, it is characterized in that: the capacitor cell (C) of described the second current path (2) is made up of the electric capacity connection in series-parallel of at least one.
5. according to high-voltage direct-current breaker topology according to claim 1, it is characterized in that: one of structure building form of the subelement in described cascade connection type electric capacity subelement switching module (5) is: first kind subelement is by capacitance group (61), diode group (62) and wholly-controled device group (63) composition, one end (64) of capacitance group (61) is connected with the negative electrode of diode group (62), the other end of capacitance group (61) is connected with the emitter of wholly-controled device group (63), the second leading-out terminal (65) as first kind subelement is drawn, the anode of diode group (62) is connected with the collector electrode of wholly-controled device group (63), as first leading-out terminal (60) of first kind subelement, described diode group (62) is made up of one or more Diode series, described wholly-controled device group (63) is composed in series by one or more wholly-controled device, and described capacitance group (61) is made up of one or more electric capacity connection in series-parallel.
6. according to high-voltage direct-current breaker topology according to claim 1, it is characterized in that: two of the structure building form of the subelement in described cascade connection type electric capacity subelement switching module (5) is: Second Type subelement is made up of capacitance group (66), the first diode group (67), the second diode group (68), the first wholly-controled device group (69) and the second wholly-controled device group (70), the negative electrode of the first diode group (67) is connected with the negative electrode of the second diode group (68) and is connected with one end (71) of capacitance group (66) afterwards, the emitter of the first wholly-controled device group (69) is connected with the second wholly-controled device group (70) and is then connected with the other end (72) of capacitance group (66), the anode of the first diode group (67) is connected the first leading-out terminal (73) as Second Type subelement with the collector electrode of the first wholly-controled device group (69), the anode of the second diode group (68) is connected the second leading-out terminal (74) as Second Type subelement with the collector electrode of the second wholly-controled device group, the first described diode group (67), the second diode group (68) are made up of one or more Diode series, the first described wholly-controled device group (69) and the second wholly-controled device group (70) are composed in series by one or more wholly-controled device, described capacitance group (66) is made up of one or more electric capacity connection in series-parallel.
7. according to high-voltage direct-current breaker topology according to claim 1, it is characterized in that: three of the structure building form of the subelement in described cascade connection type electric capacity subelement switching module (5) is: the 3rd sub-unit is made up of capacitance group (75), the first wholly-controled device group (76), the second holotype device group (77) and differential concatenation wholly-controled device group (78), the collector electrode of the first wholly-controled device group (76) is connected with one end (83) of capacitance group (75), the other end (84) of capacitance group (75) is connected with the collector electrode of the second wholly-controled device group (77), the emitter of the second wholly-controled device group (77) is connected with one end collector electrode of differential concatenation wholly-controled device group (78), as second leading-out terminal (82) of the 3rd sub-unit, the emitter of the first wholly-controled device group (76) is connected with the other end emitter of differential concatenation wholly-controled device group (78), as first leading-out terminal (81) of the 3rd sub-unit, the first described wholly-controled device group (76), the second wholly-controled device group (77) are composed in series by one or more wholly-controled device, described capacitance group (75) is made up of one or more electric capacity connection in series-parallel, and the capacity type of employing is the capacity type regardless of positive-negative polarity, described differential concatenation wholly-controled device group (78) is made up of the first forward wholly-controled device group (79) and the second forward wholly-controled device group (80) differential concatenation.
8. according to high-voltage direct-current breaker topology according to claim 1, it is characterized in that: four of the structure building form of the subelement in described cascade connection type electric capacity subelement switching module (5) is: the 4th class subelement is by capacitance group (90), wholly-controled device group (91), the first diode group (89), the second diode group (85), the 3rd diode group (86), the 4th diode group (87), and the 5th diode group (88) composition; one end of capacitance group (90) is connected with the anode (96) of the first diode group (89), the negative electrode of the first diode group (89) is connected with the collector electrode (92) of wholly-controled device group (91), the other end of capacitance group (90) is connected with the emitter (93) of wholly-controled device group (91), the anode of the second diode group (85) is connected the first leading-out terminal as the 4th sub-unit with the negative electrode of the 3rd diode group (86), the negative electrode of the second diode group (85) is connected with the collector electrode (92) of wholly-controled device group (91), the anode of the 3rd diode group (86) is connected with the emitter (93) of wholly-controled device group, the anode of the 4th diode group (87) is connected the second leading-out terminal (95) as the 3rd sub-unit with the negative electrode of the 5th diode group (88), the negative electrode of the 4th diode group (87) is connected with the collector electrode (92) of wholly-controled device group (91), the anode of the 5th diode group (88) is connected with the emitter (93) of wholly-controled device group (91),
The first described diode group (89), second diode group (85), 3rd diode group (86), the 4th diode group (87), the 5th diode group (88) forms by one or more Diode series; Described wholly-controled device group (91) is composed in series by one or more wholly-controled device; Described capacitance group (90) is made up of one or more electric capacity connection in series-parallel.
9. according to high-voltage direct-current breaker topology according to claim 1, it is characterized in that: when DC power transmission line is normally run, the mechanical switch module of the first current path (1) is closure state, and the electronic power switch module of the first current path (1) is conducting state; After line short fault being detected, the subelement of cascade connection type electric capacity subelement switching module (5) of described the second current path (2) is in capacitive bypass fault current pass-through state, turn off electronic power switch module (3), make the electric current of initial current path reduce to zero, then mechanical switch module starts to open; Fault current is switched to the second current path (2) and charges to the electric capacity subelement of described the second current path (2); When time delay to mechanical switch two ends contact spacing distance enough bears large voltage, each subelement action of cascade connection type electric capacity subelement switching module (5) of the second described current path drops into state to its electric capacity, electric capacity in each subelement is fed in the second current path (2) fast in turn, the second current path electric capacity subelement charging voltage now in the second current path (2) and each lightning arrester voltage superposition, to fault current current limliting, fault current is made finally to reduce to 0.
10. according to high-voltage direct-current breaker topology according to claim 1, it is characterized in that: the electronic power switch module of the first described current path is made up of one or more half control type device, pre-charging device has possessed initial voltage due to parallel connection for the capacitor cell (C) of described second current path (2), after line short fault being detected, the subelement of cascade connection type electric capacity subelement switching module (5) of the second described current path is in capacitive bypass fault current pass-through state, capacitor cell (C) electric discharge of the second current path makes the electric current of the second current path (2) increase sharply, electric current on first current path (1) is transported rapidly to the second current path (2), the electronic power switch module (3) of described initial current path is turned off naturally, then mechanical switch module (4) starts to open, when enough bearing large voltage to mechanical switch two ends contact spacing distance, the electric capacity of each subelement action to each subelement capacitance group of cascade connection type electric capacity subelement switching module (5) of described the second current path (2) drops into state, electric capacity in each subelement capacitance group is fed in the second current path (2) fast in turn, electric capacity subelement charging voltage now in the second current path (2) and each lightning arrester voltage superposition, to fault current current limliting, fault current is made finally to reduce to 0.
11. according to high-voltage direct-current breaker topology according to claim 1, it is characterized in that: the equal voltage limiter in parallel in capacitance group two ends in described cascade connection type electric capacity subelement switching module (5) neutron cells, the two ends voltage limiting device in parallel of the first current path (1), the two ends pressure limiting device in parallel of the capacitor cell (C) of the second current path (2), the two ends pressure limiting device in parallel of cascade connection type electric capacity subelement switching module (5); The first leading-out terminal pressure limiting device in parallel with between ground of the first current path (1), the second leading-out terminal pressure limiting device in parallel with between ground of the first current path (1).
12. according to the high-voltage direct-current breaker topology described in any one in claim 5,6,7,8, it is characterized in that: the diode group (62) in described first kind subelement, the diode group (89) in the 4th sub-unit replaces with wire; Described first kind subelement, Second Type subelement, the 3rd sub-unit, the 4th sub-unit, the diode group in the 5th sub-unit replaces by the full control device group of band anti-paralleled diode.
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| CN104300516B (en) * | 2014-05-05 | 2017-04-19 | 西南交通大学 | Unidirectional transformation-type high-voltage DC circuit breaker based on Buck convertor |
| CN104638633B (en) * | 2015-02-06 | 2017-09-12 | 孙毅彪 | Composite members intelligent high-power contacts device without electric arc dc bus |
| WO2017020269A1 (en) * | 2015-08-05 | 2017-02-09 | Abb Schweiz Ag | Bidirectional power valve and control method therefor and hybrid multi-terminal hvdc system using the same |
| CN105281287B (en) * | 2015-10-22 | 2018-08-07 | 中国科学院电工研究所 | A kind of direct-current breaker topology for having two-way blocking-up function based on thyristor |
| CN105281288B (en) * | 2015-10-22 | 2019-01-25 | 中国科学院电工研究所 | A kind of direct-current breaker topology having two-way blocking-up function |
| KR102558677B1 (en) * | 2016-04-04 | 2023-07-21 | 엘에스일렉트릭(주) | Current circuit breaker |
| CN105790228B (en) * | 2016-04-20 | 2019-03-01 | 广州供电局有限公司 | Converter valve submodule and modularization multi-level converter |
| CN106099878B (en) * | 2016-08-04 | 2019-01-29 | 华中科技大学 | A kind of capacitor charging type bidirectional, dc breaker and its application |
| CN107482575B (en) * | 2017-08-01 | 2020-01-24 | 全球能源互联网研究院 | Fault self-processing control method and system for high-voltage direct-current circuit breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3868550A (en) * | 1973-02-16 | 1975-02-25 | Hughes Aircraft Co | Circuit breaker |
| CN102687221A (en) * | 2009-11-16 | 2012-09-19 | Abb技术有限公司 | Device and method to break the current of a power transmission or distribution line and current limiting arrangement |
| CN102696087A (en) * | 2009-10-13 | 2012-09-26 | Abb研究有限公司 | A hybrid circuit breaker |
| CN103337852A (en) * | 2013-07-04 | 2013-10-02 | 中国科学院电工研究所 | Direct-current power grid opening and closing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL2810290T3 (en) * | 2012-03-09 | 2016-11-30 | Apparatus for switching of direct current in a dc network terminal |
-
2013
- 2013-12-04 CN CN201310646962.XA patent/CN103681039B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3868550A (en) * | 1973-02-16 | 1975-02-25 | Hughes Aircraft Co | Circuit breaker |
| CN102696087A (en) * | 2009-10-13 | 2012-09-26 | Abb研究有限公司 | A hybrid circuit breaker |
| CN102687221A (en) * | 2009-11-16 | 2012-09-19 | Abb技术有限公司 | Device and method to break the current of a power transmission or distribution line and current limiting arrangement |
| CN103337852A (en) * | 2013-07-04 | 2013-10-02 | 中国科学院电工研究所 | Direct-current power grid opening and closing device |
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