CN107257121A - A kind of breaker and its input method for dividing for middle pressure direct current distribution - Google Patents
A kind of breaker and its input method for dividing for middle pressure direct current distribution Download PDFInfo
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- CN107257121A CN107257121A CN201710413761.3A CN201710413761A CN107257121A CN 107257121 A CN107257121 A CN 107257121A CN 201710413761 A CN201710413761 A CN 201710413761A CN 107257121 A CN107257121 A CN 107257121A
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- branch road
- current
- breaker
- electric current
- transfer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
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- Power Engineering (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
Disclose a kind of breaker and input method for dividing for middle pressure direct current distribution, the breaker includes main current loop, electric current shifts branch road, overvoltage limits branch road, on-line monitoring system, control system, end of incoming cables C1 and leading-out terminal C2, and main current loop, electric current shifts branch road and overvoltage limitation branch circuit parallel connection, when short trouble occurs, the IGCT that high speed machine is switched in structure and transfer branch road is acted according to certain sequential, complete the disjunction of short trouble, on-line monitoring system is responsible for monitoring circuit current status, and circuit-breaker status, control system sends circuit-breaker switching on-off order according to the order of the result and upper level control system of on-line monitoring, or the malfunction and fault message of superior control system report breaker.
Description
Technical field
It is more particularly to a kind of to pass through control the present invention relates to the breaker and its input method for dividing for middle pressure direct current distribution
System transfer branch road crystal brake trigger sequence turns on loop to change transfer branch road, so as to limit high-speed switch in electric current interrupting process
The dc circuit breaker of fracture both end voltage climbing speed.
Background technology
Because hybrid circuit breaker possesses the advantages of discharge capacity is big, turn-off speed is fast, current limiting capacity is strong, enjoy educational circles and
The highest attention of industry.Hybrid circuit breaker must be rapidly completed the reliable disjunction of short trouble in short trouble early period of origination, from
And disengagement failure circuit is reached, eliminate the effect of influence of the short trouble to system.The hybrid direct current of forced commutation at this stage
Breaker realizes the purpose of breaking arc by injecting negative-phase sequence curent manufacture of intraocular zero crossing mostly, when mechanical switch branch road electricity
Flow through after zero, fracture both end voltage rises rapidly, the medium recovery time is short, easily occur impact and wear to cause disjunction to lose
Lose.Meanwhile, the hybrid dc circuit breaker of forced commutation, which exists, needs the requirement to transfer electric capacity precharge, and a disjunction can not
Tackle the disjunction mission requirements after reclosing.
Disclosed above- mentioned information is used only for strengthening the understanding to background of the present invention in the background section, it is thus possible to
Include the information of prior art known to a person of ordinary skill in the art in not constituting home.
The content of the invention
For above-mentioned end defect and deficiency, the present invention propose a kind of novel mixed direct-current breaker topology structure and
Control program.Control different circuit to connect by triggering IGCT according to some sequential, effectively limit mechanical breaker in electric current
After zero passage, fracture voltage climbing.Electric capacity is shifted simultaneously by discharging twice, after completion is cut-off, capacitance voltage and preliminary filling
Voltage direction is consistent, can possess after reply power network reclosing the mission requirements of disjunction again.
The deficiency or defect existed for above-mentioned prior art, it is disconnected it is an object of the invention to provide a kind of hybrid direct current
Road device and its control method.By controlling the power semiconductor of transfer current circuit to be turned on according to certain sequential, Ke Yiyou
Imitate the overvoltage climbing speed at limiting circuit breaker two ends, and due in interrupting process capacitance current have passed through and shift twice, break
Voltage direction after the completion of road device cut-offs on recharged capacitance is consistent with the pre-charge voltage direction before action, eliminates electric capacity C
Charging process.
When the voltage at transfer current circuit two ends reaches the conduction threshold of overvoltage limiting circuit, overvoltage limiting circuit
Conducting so that main current circuit both end voltage is limited in certain limit；Control system monitors main current circuit and transfer current
The current amplitude and current changing rate of circuit 1 in circuit, and high speed machine switch and transfer current electricity are controlled according to monitoring result
Road is acted according to certain sequential.
The purpose of the present invention is to be achieved by the following technical programs.
A kind of an aspect of of the present present invention, breaker for middle pressure direct current distribution includes main current loop, electric current transfer branch
Road, overvoltage limitation branch road, on-line monitoring system, control system, end of incoming cables C1 and leading-out terminal C2, and main current loop, electricity
Circulation moves branch road and overvoltage limitation branch circuit parallel connection.
The main current loop is composed in series by high speed machine switch and power diode, wherein：
Straight-flow system is accessed in one end of the end of incoming cables C1 connections high speed machine switch so as to breaker；
The other end of the high speed machine switch is connected with the power diode positive pole；
The power diode negative pole is connected with leading-out terminal C2.
The electric current transfer branch road includes branch road 1, branch road 2, branch road 3, branch road 4 and predetermined pre-charge pressure transfer electric capacity C,
Wherein, circuit 1 is composed in series by half control type power semiconductor VD1, and branch road 2 is partly led by transfer inductance L1 and half control type power
Body device VD2 is composed in series, and branch road 3 is composed in series by transfer inductance L2 and half control type power semiconductor VD3, branch road 4 by
Half control type power semiconductor VD4 is composed in series, wherein：
The branch road 1 and the branch road 4 are composed in series series arm 14, and the series arm 14 is connected in parallel on principal current and returned
Road two ends, and：
The positive pole of the end of incoming cables C1 connections half control type power semiconductor VD1 so as to realize and it is described connect branch
The connection of the one end on road 14 and cause electric current transfer branch road be connected with main current loop；
The positive pole of the negative pole of the half control type power semiconductor VD1 and the half control type power semiconductor VD4
Connect to realize the series connection of the circuit 1 and the circuit 4；
The half control type power semiconductor VD4 negative poles and leading-out terminal C2 are connected for electric current transfer branch road and main electricity
Flow back to road to be connected, so as to realize that the series arm 14 is in parallel with the main current loop.
The branch road 2 and the branch road 3 are composed in series series arm 23, and the series arm 23 is returned with the principal current
Road is in parallel, and：
The end of incoming cables C1 connections half control type power semiconductor VD2 positive poles, to realize and the branch of connecting
One end connection on road 23；
The half control type power semiconductor VD2 negative poles connect described transfer inductance L1 one end, the transfer inductance L1
The other end connect the positive pole of the half control type power semiconductor VD3, to realize that the branch road 2 is gone here and there with the branch road 3
Connection；
The negative pole connection transfer inductance L2 of half control type power semiconductor VD3 one end, the transfer inductance L2
The other end be connected with leading-out terminal C2, so as to electric current shift branch road and main current loop connection so that realize it is described series connection branch
Road 23 is in parallel with the main current loop.
Two of the end points between end points and the branch road 2 and the branch road 3 between the branch road 1 and the branch road 4
Connection transfer electric capacity C between end points, wherein pre-charge pressure transfer electric capacity C positive one end connected in branch road 2 and branch road 3.
On-line monitoring system is including being used to measure the current sensor D0 of main current loop current status, being connected for measuring
The current sensor D1 of the current status of branch road 14, the current sensor D2 of the current status for measuring series arm 23, use
The current sensor D3 of the current status of branch road is limited in measurement overvoltage, for measuring the fracture voltage that high speed machine is switched
Voltage sensor Vhss, the voltage sensor Vc for measuring transfer electric capacity C both end voltage states, open for measuring high speed machine
The displacement transducer Pd and circuit breaker ambient temperature sensor D4 of the motion state of pass, signal conditioning circuit, A/D modular converters and
First communication module.
The control system includes computing module, the current filtering processing mould for being used to calculate main current loop current changing rate
Under block, in real time display circuit-breaker status and the human-computer interaction module and second communication module of result of calculation, normal operating conditions, electricity
Stream is flowed through from the main current loop, and transfer electric capacity C is provided with predetermined precharging voltage value, and voltage direction is returned with the principal current
The conduction voltage drop on road is in opposite direction；The electric current transfer branch road and overvoltage limitation branch road do not have electric current to flow through, the half control type
Power semiconductor VD1, VD2, VD3 and VD4 are not triggered；When on-line monitoring system monitors straight-flow system abnormal state
Or the control system send separating brake instruction when, the control system to high speed machine switch sends separating brake instruct, high speed machine
Start action, then the action sequence according to setting trigger successively half control type power semiconductor VD1, VD2, VD3 and
VD4, completes electric current and forces zero passage to be cut-off to realize.
In the described breaker for being used for middle pressure direct current distribution, the half control type power semiconductor VD1, VD2,
VD3 and VD4 is the half control type device of one-way conduction, and it includes GTO, IGCT, IGBT any one or multiple combinations.
It is used in described in the breaker of middle pressure direct current distribution, the high speed machine switch is the height based on electromagnetic repulsion force
Fast mechanical switch, the mechanical switch driven based on high-speed electric expreess locomotive or the high speed machine switch based on explosion driving.
It is used in described in the breaker of middle pressure direct current distribution, the design parameter of the overvoltage limitation branch road includes electricity
Pressure limiting circuit capacity, conducting voltage threshold value, electric current when reaching conducting voltage, the spacing voltage of highest and spacing in highest
Electric current during voltage.
It is used in described in the breaker of middle pressure direct current distribution, the overvoltage limitation branch road is normally run in breaker
In the case of be in cut-off state, leakage current be less than 0.5 μ A；The conducting voltage threshold value of the overvoltage limitation branch road is the open circuit
1.75 times of system voltage residing for device.
It is used in described in the breaker of middle pressure direct current distribution, the overvoltage limitation branch road includes line type metal oxygen
Compound arrester, gapless Line type's MOA, all insulation polymeric metal oxide surge arrester or detachable
Any one or more combinations in formula arrester.
It is used in described in the breaker of middle pressure direct current distribution, the control system includes processor, the processor
For general processor, digital signal processor, application-specific integrated circuit ASIC or on-site programmable gate array FPGA, the processor
Including memory, the memory can include one or more read only memory ROMs, random access memory ram, flash memory
Reservoir or Electrical Erasable programmable read only memory EEPROM.
According to another aspect of the present invention, a kind of input method for utilizing the described breaker for being used for middle pressure direct current distribution
Comprise the following steps：
In the first step, control system receives reclosing command and sends reclosing command to breaker.
In the second step, the disconnecting switch closure at breaker two ends, the and now high speed machine of breaker is switched not
Closure.
In third step, triggering half control type power semiconductor VD1 and VD4 are turned on, the electric current in main current loop
First flowed through from series arm 14.
In four steps, feed motion is completed, because both end voltage is VD1 and VD4 conduction voltage drops, in making process not
There is arcing process.
In the 5th step, electric current is shifted from series arm 14 to main current loop, half control type power semiconductor VD1
With VD4 because current over-zero is turned off, input is completed.
According to another aspect of the invention, a kind of normal condition for utilizing the described breaker for being used for middle pressure direct current distribution
Under method for dividing comprise the following steps：
In the first step, control system receives separating brake instruction and sends separating brake instruction to breaker.
In the second step, triggering half control type power semiconductor VD1 and VD3 conductings, the electric current of main current loop is opened
Begin to shift to series arm 23.
In third step, high speed machine switch after certain response time by opening, the electric current of main current loop
Zero passage is forced due to the oscillating current that the capacitor and inductor that electric current shifts branch road is produced, high speed machine switch blow-out, principal current is returned
Open on road.
In four steps, main current loop charges to transfer electric capacity, when transfer electric capacity reaches overvoltage limitation branch road
During the action threshold value of setting, overvoltage limitation branch road conducting, electric current starts to overvoltage limitation branch road transfer.
In the 5th step, electric current is completely transferred to overvoltage limitation branch road, because system voltage is limited less than overvoltage
The action threshold value of branch road, electric current rapid decrease finally when electric current, which drops to overvoltage, limits the cut-off current of branch road, completes to divide
It is disconnected.
According to another aspect of the invention, a kind of short-circuit condition for utilizing the described breaker for being used for middle pressure direct current distribution
Under method for dividing comprise the following steps：
In the first step, on-line detecting system detects system power and reaches that given threshold or current-rising-rate reach
During given threshold, control system sends separating brake instruction.
In the second step, there is operating lag in high speed machine switch, and half control type power semiconductor VD1 and VD3 are led
Logical, the electric current of main current loop starts to shift to series arm 13.
In third step, high speed machine switch is opened, and is shifted along with electric current to electric current transfer branch road, main current loop
Current over-zero, high speed machine switch blow-out.
In four steps, control system triggering half control type power semiconductor VD2 conductings, with transfer capacitance voltage
Increase, the electric current of branch road 1 is gradually reduced.
In the 5th step, as the electric current of branch road 1 is reduced to zero, half control type power semiconductor VD1 current over-zeros are closed
It is disconnected.
In the 6th step, electric current is completely transferred to after branch road 2 and branch road 4, triggers half control type power semiconductor
VD4 is turned on, and is negative due to shifting electric capacity C and half control type power semiconductor VD4 voltages, electric current starts to shift to branch road 4.
In the 7th step, the electric current of branch road 3 is gradually decrease to zero, half control type power semiconductor VD3 circuit zero passages
Shut-off.
In the 8th step, with transfer capacitance voltage increase, after the threshold value for reaching overvoltage limitation branch road, overvoltage
Branch road conducting is limited, electric current starts to overvoltage limitation branch road transfer.
In the 9th step, because system voltage is less than the conduction threshold that overvoltage limits branch road, overvoltage limitation branch road
Electric current is quickly decreased to zero, completes to cut-off.
Described above is only the general introduction of technical solution of the present invention, in order to cause the technological means of the present invention clearer
Understand, reach the degree that those skilled in the art can be practiced according to the content of specification, and in order to allow the present invention
Above and other objects, features and advantages can become apparent, below with the present invention embodiment illustrated
Explanation.
Brief description of the drawings
By reading the detailed description in hereafter preferred embodiment, the present invention various other advantage and benefit
It will be clear understanding for those of ordinary skill in the art.Figure of description is only used for showing the purpose of preferred embodiment,
And it is not considered as limitation of the present invention.It should be evident that drawings discussed below is only some embodiments of the present invention,
For those of ordinary skill in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings
Other accompanying drawings.And in whole accompanying drawing, identical part is presented with like reference characters.
In the accompanying drawings：
Fig. 1 is the structural representation of the breaker according to an embodiment of the invention for middle pressure direct current distribution；
Fig. 2 is on-line monitoring system sensor according to an embodiment of the invention in circuit breaker internal distribution schematic diagram；
Fig. 3 is that breaker on-line monitoring system according to an embodiment of the invention and control system coordinate block diagram；
Fig. 4 is breaker input procedure structure schematic diagram according to an embodiment of the invention；
Transfer current branch current stream when Fig. 5 (a)-Fig. 5 (e) is disjunction rated current according to an embodiment of the invention
To schematic diagram；
Fig. 6 (a)-Fig. 6 (i) is that breaking current according to an embodiment of the invention is more than each electric current transfer during rated current
Branch current flows to schematic diagram；
The step of Fig. 7 is the input method of the breaker of pressure direct current distribution in utilization according to an embodiment of the invention is shown
It is intended to；
Fig. 8 is point in normal state of the breaker of pressure direct current distribution in utilization according to an embodiment of the invention
The step schematic diagram of disconnected method；
Fig. 9 is the disjunction side under short circuit of the breaker of pressure direct current distribution in utilization according to an embodiment of the invention
The step schematic diagram of method.
The present invention is further explained below in conjunction with drawings and examples.
Embodiment
The specific embodiment of the present invention is more fully described below with reference to accompanying drawings.Although showing the present invention's in accompanying drawing
Specific embodiment, it being understood, however, that may be realized in various forms the present invention without that should be limited by embodiments set forth here
System.Conversely it is able to be best understood from the present invention there is provided these embodiments, and can be complete by the scope of the present invention
Convey to those skilled in the art.
It should be noted that having used some vocabulary to censure specific components among specification and claim.Ability
Field technique personnel it would be appreciated that, technical staff may call same component with different nouns.This specification and right
It is required that not in the way of the difference of noun is used as differentiation component, but differentiation is used as with the difference of component functionally
Criterion."comprising" or " comprising " as mentioned in working as in specification in the whole text and claim are an open language, therefore should be solved
It is interpreted into " include but be not limited to ".Specification subsequent descriptions for implement the present invention better embodiment, so it is described description be with
For the purpose of the rule of specification, the scope of the present invention is not limited to.Protection scope of the present invention is when regarding appended right
It is required that defined person is defined.
For ease of the understanding to the embodiment of the present invention, done below in conjunction with accompanying drawing by taking several specific embodiments as an example further
Explanation, and each accompanying drawing does not constitute the restriction to the embodiment of the present invention.
Fig. 1 is the structural representation of the breaker for being used for middle pressure direct current distribution of one embodiment of the present of invention, the present invention
Embodiment will be specifically described with reference to Fig. 1.
As shown in figure 1, An embodiment provides a kind of breaker for middle pressure direct current distribution, it is described disconnected
Road device includes main current loop, electric current transfer branch road, overvoltage limitation branch road, on-line monitoring system, control system, end of incoming cables C1
With leading-out terminal C2, and main current loop, electric current transfer branch road and overvoltage limitation branch circuit parallel connection.
The main current loop is composed in series by high speed machine switch and power diode, wherein：The end of incoming cables C1 connects
One end of the high speed machine switch is connect so that breaker accesses straight-flow system；The other end of high speed machine switch with it is described
Power diode positive pole is connected；The power diode negative pole is connected with leading-out terminal C2.
The electric current transfer branch road includes branch road 1, branch road 2, branch road 3, branch road 4 and predetermined pre-charge pressure transfer electric capacity C,
Wherein, circuit 1 is composed in series by half control type power semiconductor VD1, and branch road 2 is partly led by transfer inductance L1 and half control type power
Body device VD2 is composed in series, and branch road 3 is composed in series by transfer inductance L2 and half control type power semiconductor VD3, branch road 4 by
Half control type power semiconductor VD4 is composed in series.
The branch road 1 and the branch road 4 are composed in series series arm 14, and the series arm 14 is connected in parallel on principal current and returned
Road two ends, and：The positive pole of the end of incoming cables C1 connections half control type power semiconductor VD1 is to realize and the string
Join the connection of one end of branch road 14 and electric current transfer branch road is connected with main current loop；The half control type power is partly led
Body device VD1 negative pole is connected to realize the circuit 1 and described with the positive pole of the half control type power semiconductor VD4
The series connection of circuit 4；The half control type power semiconductor VD4 negative poles and leading-out terminal C2 be connected for electric current transfer branch road and
Main current loop is connected, so as to realize that the series arm 14 is in parallel with the main current loop.
The branch road 2 and the branch road 3 are composed in series series arm 23, and the series arm 23 is returned with the principal current
Road is in parallel, and the end of incoming cables C1 connections half control type power semiconductor VD2 positive poles, is connected to realize with described
One end connection of branch road 23；The half control type power semiconductor VD2 negative poles connect described transfer inductance L1 one end, described turn
The other end for moving inductance L1 connects the positive pole of the half control type power semiconductor VD3, so as to realize the branch road 2 with it is described
Branch road 3 is connected, the negative pole connection transfer inductance L2 of half control type power semiconductor VD3 one end, the transfer inductance
The L2 other end is connected with leading-out terminal C2, so that electric current shifts branch road and main current loop connection, so as to realize the series connection
Branch road 23 is in parallel with the main current loop.
Two of the end points between end points and the branch road 2 and the branch road 3 between the branch road 1 and the branch road 4
Connection transfer electric capacity C between end points, wherein pre-charge pressure transfer electric capacity C positive one end connected in branch road 2 and branch road 3.
Fig. 2 be on-line monitoring system sensor according to an embodiment of the invention in circuit breaker internal distribution schematic diagram,
Referring to Fig. 2, on-line monitoring system is including being used to measure the current sensor D0 of main current loop current status, being connected for measuring
The current sensor D1 of the current status of branch road 14, the current sensor D2 of the current status for measuring series arm 23, use
The current sensor D3 of the current status of branch road is limited in measurement overvoltage, for measuring the fracture voltage that high speed machine is switched
Voltage sensor Vhss, the voltage sensor Vc for measuring transfer electric capacity C both end voltage states, open for measuring high speed machine
The displacement transducer Pd and circuit breaker ambient temperature sensor D4 of the motion state of pass, signal conditioning circuit, A/D modular converters and
First communication module.
Fig. 3 is that breaker on-line monitoring system according to an embodiment of the invention and control system coordinate block diagram, referring to
Fig. 3, the control system include being used for calculating the computing module of main current loop current changing rate, current filtering processing module,
Show in real time under circuit-breaker status and the human-computer interaction module and second communication module of result of calculation, normal operating conditions, electric current
Flowed through from the main current loop, transfer electric capacity C is provided with predetermined precharging voltage value, and voltage direction and the main current loop
Conduction voltage drop it is in opposite direction；The electric current transfer branch road and overvoltage limitation branch road do not have electric current to flow through, the half control type work(
Rate semiconductor devices VD1, VD2, VD3 and VD4 are not triggered；When on-line monitoring system monitor straight-flow system abnormal state or
When the control system sends separating brake instruction, the control system sends separating brake to high speed machine switch and instructed, and high speed machine is opened
Pass start action, then the action sequence according to setting trigger successively half control type power semiconductor VD1, VD2, VD3 and
VD4, completes electric current and forces zero passage to be cut-off to realize.
In the preferred embodiment of the breaker of the present invention for middle pressure direct current distribution, the half control type power half
Conductor device VD1, VD2, VD3 and VD4 be one-way conduction half control type device, it include GTO, IGCT, IGBT it is any one
Individual or multiple combination.
In the preferred embodiment of the breaker of the present invention for middle pressure direct current distribution, the high speed machine switch
The mechanical switch driven for the high speed machine switch based on electromagnetic repulsion force, based on high-speed electric expreess locomotive or the high speed machine based on explosion driving
Tool is switched.
In the preferred embodiment of the breaker of the present invention for middle pressure direct current distribution, the overvoltage limitation branch
Electric current, the spacing electricity of highest when the design parameter on road includes voltage limiting circuit capacity, conducting voltage threshold value, reaches conducting voltage
Electric current when pressure and voltage spacing in highest.
In the preferred embodiment of the breaker of the present invention for middle pressure direct current distribution, the overvoltage limitation branch
Road is in cut-off state under breaker normal operation, and leakage current is less than 0.5 μ A；The overvoltage limits the conducting of branch road
Voltage threshold is 1.75 times of the system voltage residing for the breaker.
In the preferred embodiment of the breaker of the present invention for middle pressure direct current distribution, the overvoltage limitation branch
Road includes Line type's MOA, gapless Line type's MOA, all insulation composite sheath metal
Any one or more combinations in Oxide Arrester or detachable lightning arrester.
In the preferred embodiment of the breaker of the present invention for middle pressure direct current distribution, the control system includes
Processor, the processor is general processor, digital signal processor, application-specific integrated circuit ASIC or field-programmable gate array
FPGA is arranged, the processor includes memory, and the memory can include one or more read only memory ROMs, deposit at random
Access to memory RAM, flash memory or Electrical Erasable programmable read only memory EEPROM.
Fig. 4 is breaker input procedure structure schematic diagram according to an embodiment of the invention, illustrates breaker with reference to Fig. 4
Input coefficient process, whole input process is divided into the following steps：
Control system receives the reclosing command from higher level's control system or the reclosing command from other interactive interface,
Send reclosing command.
Breaker two ends disconnecting switch is closed, and now the high speed machine of breaker is switched and not closed.
Control triggering half control type power semiconductor VD1 and VD4 conducting, main current loop electric current is first from transfer branch road 14
Flow through.
Mechanism completes feed motion, because mechanism both end voltage is VD1 and VD4 conduction voltage drops, is not present in making process
Arcing process.
Because mechanism on state resistance is smaller, electric current is shifted from transfer Zhi Luxiang main current loops, half control type power semiconductor
Device VD1 and VD4 is turned off due to current over-zero, and input process is completed.
Transfer current branch current stream when Fig. 5 (a)-Fig. 5 (e) is disjunction rated current according to an embodiment of the invention
To schematic diagram, illustrate disjunction rated current process with reference to Fig. 5 (a)-Fig. 5 (e).
Under normal operating conditions, electric current flows through from the less main current loop of on-state loss, such as shown in Fig. 5 (a).
Dc circuit breaker control system receives the separating brake instruction of higher level's control system, sends separating brake instruction, triggers half control type
Power semiconductor VD1 and VD3 are turned on, and main current loop electric current starts to shift to series arm 23, shown in such as Fig. 5 (b).
High speed machine switch is opened after by certain response time, and main current loop electric current shifts branch due to electric current
Oscillating current that the capacitor and inductor on road is produced and force zero passage, high speed machine switch blow-out, main current loop is opened, such as Fig. 5 (c)
It is shown.
Main current loop is to electric current transfer electric capacity charging, when transfer electric capacity reaches the action of the setting of overvoltage limitation branch road
During threshold value, overvoltage limitation branch road conducting, electric current starts to overvoltage limitation branch road transfer, shown in such as Fig. 5 (d).
Electric current is completely transferred to overvoltage limitation branch road, because system voltage is less than the action threshold of overvoltage protection branch road
Value, electric current rapid decrease, finally when electric current, which drops to overvoltage, limits the cut-off current of branch road, breaker completion is cut-off dynamic
Make, shown in such as Fig. 5 (e).
Fig. 6 (a)-Fig. 6 (i) is that breaking current according to an embodiment of the invention is more than each electric current transfer during rated current
Branch current flows to schematic diagram, illustrates short circuit breaking process with reference to Fig. 6 (a)-Fig. 6 (i)：
Under normal operating conditions, electric current flows through from the less main current loop of on-state loss, such as shown in Fig. 6 (a).
When on-line detecting system detects the system failure, i.e., system power reaches that given threshold or current-rising-rate reach
During to given threshold, control system sends separating brake instruction, because high speed machine switch has operating lag, that is, is that switch is no vertical
Open, half control type power semiconductor VD1 and VD3 conducting, main current loop electric current starts to the transfer series connection branch of branch road 13
Road is shifted, shown in such as Fig. 6 (b).
High speed machine switch is opened, and along with electric current to electric current transfer branch road transfer, main current loop current over-zero is mechanical
Blow-out is switched, shown in such as Fig. 6 (c).
Now control system triggering half control type power semiconductor VD2 conductings, with transfer capacitance voltage increase, branch road
1 electric current is gradually reduced, such as shown in Fig. 6 (d).
As the electric current of branch road 1 is reduced to zero, half control type power semiconductor VD1 current over-zeros shut-off, such as Fig. 6 (e) institutes
Show.
Control system electric current is completely transferred to after branch road 2 and branch road 4, and triggering half control type power semiconductor VD4 is led
It is logical, it is negative due to shifting electric capacity C and half control type power semiconductor VD4 voltages, electric current starts to shift to branch road 4, such as Fig. 6
(f) shown in.
The electric current of branch road 3 is gradually decrease to zero, half control type power semiconductor VD3 electricity with the transfer current of second stage
Road zero-crossing switching, such as Fig. 6 (g).
With transfer capacitance voltage increase, after the threshold value for reaching overvoltage limitation branch road, overvoltage limitation branch road conducting,
Electric current starts to overvoltage limitation branch road transfer, shown in such as Fig. 6 (h).
Because system voltage is less than the conduction threshold that overvoltage limits branch road, overvoltage limitation branch current is quickly decreased to
Zero, short circuit interruption is completed, shown in such as Fig. 6 (i).
Therefore, in summary, the present invention proposes input method, the method for dividing under normal condition and the short circuit of breaker
Under method for dividing.
The step of Fig. 7 is the input method of the breaker of pressure direct current distribution in utilization according to an embodiment of the invention is shown
It is intended to, a kind of input method for utilizing the described breaker for being used for middle pressure direct current distribution comprises the following steps：
In first step S1, control system receives reclosing command and sends reclosing command to breaker.
In second step S2, the disconnecting switch closure at breaker two ends, and now the high speed machine of breaker is switched simultaneously
It is not closed.
In third step S3, triggering half control type power semiconductor VD1 and VD4 are turned on, the electricity in main current loop
Stream first flows through from series arm 14.
In the fourth step s 4, feed motion is completed, because both end voltage is VD1 and VD4 conduction voltage drops, in making process
In the absence of arcing process.
In the 5th step S5, electric current is shifted from series arm 14 to main current loop, half control type power semiconductor
VD1 and VD4 is turned off due to current over-zero, completes input.
Fig. 8 is the disjunction under the normal condition of the breaker of pressure direct current distribution in utilization according to an embodiment of the invention
The step schematic diagram of method, as shown in figure 8, a kind of utilize described be used under the normal condition of the breaker of middle pressure direct current distribution
Method for dividing comprise the following steps：
In first step S1, control system receives separating brake instruction and sends separating brake instruction to breaker.
In second step S2, triggering half control type power semiconductor VD1 and VD3 conducting, the electric current of main current loop
Start to shift to series arm 23.
In third step S3, high speed machine switch after certain response time by opening, the electricity of main current loop
Flow and zero passage is forced due to the oscillating current that the capacitor and inductor that electric current shifts branch road is produced, high speed machine switch blow-out, principal current
Open in loop.
In the fourth step s 4, main current loop is to transfer electric capacity charging, when transfer electric capacity reaches that overvoltage limits branch road
Setting action threshold value when, overvoltage limitation branch road conducting, electric current start to overvoltage limitation branch road transfer.
In the 5th step S5, electric current is completely transferred to overvoltage limitation branch road, because system voltage is limited less than overvoltage
The action threshold value of branch road processed, electric current rapid decrease finally when electric current, which drops to overvoltage, limits the cut-off current of branch road, is completed
Disjunction.
Fig. 9 is the method for dividing under the short circuit of the breaker of pressure direct current distribution in utilization according to an embodiment of the invention
Step schematic diagram, as shown in figure 9, a kind of utilize described point being used under the short-circuit condition of the breaker of middle pressure direct current distribution
Disconnected method, it comprises the following steps：
In first step S1, on-line detecting system detects system power and reaches that given threshold or current-rising-rate reach
During to given threshold, control system sends separating brake instruction.
In second step S2, there is operating lag, half control type power semiconductor VD1 and VD3 in high speed machine switch
Conducting, the electric current of main current loop starts to shift to series arm 13.
In third step S3, high speed machine switch is opened, and along with electric current to electric current transfer branch road transfer, principal current is returned
Road current over-zero, high speed machine switch blow-out.
In the fourth step s 4, control system triggering half control type power semiconductor VD2 conductings, with transfer electric capacity electricity
Pressure increase, the electric current of branch road 1 is gradually reduced.
In the 5th step S5, as the electric current of branch road 1 is reduced to zero, half control type power semiconductor VD1 current over-zeros
Shut-off.
In the 6th step S5, electric current is completely transferred to after branch road 2 and branch road 4, triggers half control type power semiconductor device
Part VD4 is turned on, and is negative due to shifting electric capacity C and half control type power semiconductor VD4 voltages, electric current starts to shift to branch road 4.
In the 7th step S7, the electric current of branch road 3 is gradually decrease to zero, half control type power semiconductor VD3 circuit mistakes
Zero shut-off.
It is excessively electric after the threshold value for reaching overvoltage limitation branch road with transfer capacitance voltage increase in the 8th step S8
Pressure limitation branch road conducting, electric current starts to overvoltage limitation branch road transfer.
In the 9th step S9, because system voltage is less than the conduction threshold that overvoltage limits branch road, overvoltage limitation branch
Road electric current is quickly decreased to zero, completes to cut-off.
The present invention can be limited effectively by controlling the power semiconductor of transfer current circuit to be turned on according to certain sequential
The overvoltage climbing speed at breaker two ends processed, and due in interrupting process capacitance current have passed through and shift twice, breaker
Voltage direction after the completion of cut-offfing on recharged capacitance is consistent with the pre-charge voltage direction before action, eliminates filling for electric capacity C
Electric process.When the voltage that electric current shifts branch road two ends reaches that overvoltage limits the conduction threshold of branch road, overvoltage limitation branch road
Conducting so that main current loop both end voltage is limited in certain limit；Control system monitors main current loop and electric current transfer
The current amplitude and current changing rate of circuit 1 in branch road, and control high speed machine switch and electric current to shift branch according to monitoring result
Road is acted according to certain sequential.
Although embodiment of the present invention is described above in association with accompanying drawing, the invention is not limited in above-mentioned
Specific embodiments and applications field, above-mentioned specific embodiment is only schematical, guiding, rather than restricted
's.One of ordinary skill in the art is under the enlightenment of this specification and is not departing from the scope that the claims in the present invention are protected
In the case of, the form of many kinds can also be made, these belong to the row of protection of the invention.
Claims (10)
1. a kind of breaker for middle pressure direct current distribution, the breaker includes main current loop, electric current transfer branch road, excessively electric
Pressure limitation branch road, on-line monitoring system, control system, end of incoming cables C1 and leading-out terminal C2, and main current loop, electric current transfer branch
Road and overvoltage limitation branch circuit parallel connection, it is characterised in that：
(1) main current loop is composed in series by high speed machine switch and power diode, wherein：
Straight-flow system is accessed in one end of the end of incoming cables C1 connections high speed machine switch so as to breaker；
The other end of the high speed machine switch is connected with the power diode positive pole；
The power diode negative pole is connected with leading-out terminal C2；
(2) the electric current transfer branch road includes branch road 1, branch road 2, branch road 3, branch road 4 and predetermined pre-charge pressure transfer electric capacity C,
Wherein, circuit 1 is composed in series by half control type power semiconductor VD1, and branch road 2 is partly led by transfer inductance L1 and half control type power
Body device VD2 is composed in series, and branch road 3 is composed in series by transfer inductance L2 and half control type power semiconductor VD3, branch road 4 by
Half control type power semiconductor VD4 is composed in series, wherein：
(A) branch road 1 and the branch road 4 are composed in series series arm 14, and the series arm 14 is connected in parallel on principal current and returned
Road two ends, and：
The positive pole of the end of incoming cables C1 connections half control type power semiconductor VD1 is to realize and the series arm 14
One end connection and cause electric current transfer branch road be connected with main current loop；
The negative pole of the half control type power semiconductor VD1 is connected with the positive pole of the half control type power semiconductor VD4
To realize the series connection of the circuit 1 and the circuit 4；
The half control type power semiconductor VD4 negative poles and leading-out terminal C2 are connected for electric current transfer branch road and principal current is returned
Road is connected, so as to realize that the series arm 14 is in parallel with the main current loop；
(B) branch road 2 and the branch road 3 are composed in series series arm 23, and the series arm 23 is returned with the principal current
Road is in parallel, and：
The end of incoming cables C1 connections half control type power semiconductor VD2 positive poles, to realize and the series arm 23
One end connection；
The half control type power semiconductor VD2 negative poles connect described transfer inductance L1 one end, and the transfer inductance L1's is another
One end connects the positive pole of the half control type power semiconductor VD3, to realize that the branch road 2 is connected with the branch road 3；
The negative pole connection transfer inductance L2 of half control type power semiconductor VD3 one end, the transfer inductance L2's is another
One end is connected with leading-out terminal C2, so that electric current shifts branch road and main current loop connection, so as to realize the series arm 23
It is in parallel with the main current loop；
(C) two ends of the end points between the end points and the branch road 2 and the branch road 3 between the branch road 1 and the branch road 4
Connection transfer electric capacity C between point, wherein pre-charge pressure transfer electric capacity C positive one end connected in branch road 2 and branch road 3；
(3) on-line monitoring system is including being used to measure the current sensor D0 of main current loop current status, being connected for measuring
The current sensor D1 of the current status of branch road 14, the current sensor D2 of the current status for measuring series arm 23, use
The current sensor D3 of the current status of branch road is limited in measurement overvoltage, for measuring the fracture voltage that high speed machine is switched
Voltage sensor Vhss, the voltage sensor Vc for measuring transfer electric capacity C both end voltage states, open for measuring high speed machine
The displacement transducer Pd and circuit breaker ambient temperature sensor D4 of the motion state of pass, signal conditioning circuit, A/D modular converters and
First communication module；
(4) control system includes computing module, the current filtering processing mould for being used to calculate main current loop current changing rate
Under block, in real time display circuit-breaker status and the human-computer interaction module and second communication module of result of calculation, normal operating conditions, electricity
Stream is flowed through from the main current loop, and transfer electric capacity C is provided with predetermined precharging voltage value, and voltage direction is returned with the principal current
The conduction voltage drop on road is in opposite direction；The electric current transfer branch road and overvoltage limitation branch road do not have electric current to flow through, the half control type
Power semiconductor VD1, VD2, VD3 and VD4 are not triggered；When on-line monitoring system monitors straight-flow system abnormal state
Or the control system send separating brake instruction when, the control system to high speed machine switch sends separating brake instruct, high speed machine
Start action, then the action sequence according to setting trigger successively half control type power semiconductor VD1, VD2, VD3 and
VD4, completes electric current and forces zero passage to be cut-off to realize.
2. the breaker according to claim 1 for middle pressure direct current distribution, it is characterised in that：It is preferred that, the half control
Type power semiconductor VD1, VD2, VD3 and VD4 are the half control type device of one-way conduction, and it includes GTO, IGCT, IGBT
Any one or multiple combinations.
3. the breaker according to claim 1 for middle pressure direct current distribution, it is characterised in that：The high speed machine switch
The mechanical switch driven for the high speed machine switch based on electromagnetic repulsion force, based on high-speed electric expreess locomotive or the high speed machine based on explosion driving
Tool is switched.
4. the breaker according to claim 1 for middle pressure direct current distribution, it is characterised in that：The overvoltage limitation branch
Electric current, the spacing electricity of highest when the design parameter on road includes voltage limiting circuit capacity, conducting voltage threshold value, reaches conducting voltage
Electric current when pressure and voltage spacing in highest.
5. the breaker according to claim 1 for middle pressure direct current distribution, it is characterised in that：The overvoltage limitation branch
Road is in cut-off state under breaker normal operation, and leakage current is less than 0.5 μ A；The overvoltage limits the conducting of branch road
Voltage threshold is 1.75 times of the system voltage residing for the breaker.
6. the breaker according to claim 1 for middle pressure direct current distribution, it is characterised in that：The overvoltage limitation branch
Road includes Line type's MOA, gapless Line type's MOA, all insulation composite sheath metal
Any one or more combinations in Oxide Arrester or detachable lightning arrester.
7. the breaker according to claim 1 for middle pressure direct current distribution, it is characterised in that：The control system includes
Processor, the processor is general processor, digital signal processor, application-specific integrated circuit ASIC or field-programmable gate array
FPGA is arranged, the processor includes memory, and the memory can include one or more read only memory ROMs, deposit at random
Access to memory RAM, flash memory or Electrical Erasable programmable read only memory EEPROM.
8. a kind of input method of the breaker for being used for middle pressure direct current distribution utilized described in claim any one of 1-7, it is wrapped
Include following steps：
In first step (S1), control system receives reclosing command and sends reclosing command to breaker；
In second step (S2), the disconnecting switch closure at breaker two ends, and now the high speed machine of breaker is switched not
Closure；
In third step (S3), triggering half control type power semiconductor VD1 and VD4 are turned on, the electric current in main current loop
First flowed through from series arm 14；
In four steps (S4), feed motion is completed, because both end voltage is VD1 and VD4 conduction voltage drops, in making process not
There is arcing process；
In the 5th step (S5), electric current is shifted from series arm 14 to main current loop, half control type power semiconductor VD1
With VD4 because current over-zero is turned off, input is completed.
9. a kind of point being used under the normal condition of the breaker of middle pressure direct current distribution utilized described in claim any one of 1-7
Disconnected method, it comprises the following steps：
In first step (S1), control system receives separating brake instruction and sends separating brake instruction to breaker；
In second step (S2), triggering half control type power semiconductor VD1 and VD3 conducting, the electric current of main current loop is opened
Begin to shift to series arm 23；
In third step (S3), high speed machine switch after certain response time by opening, the electric current of main current loop
Zero passage is forced due to the oscillating current that the capacitor and inductor that electric current shifts branch road is produced, high speed machine switch blow-out, principal current is returned
Open on road；
In four steps (S4), main current loop charges to transfer electric capacity, when transfer electric capacity reaches overvoltage limitation branch road
During the action threshold value of setting, overvoltage limitation branch road conducting, electric current starts to overvoltage limitation branch road transfer；
In the 5th step (S5), electric current is completely transferred to overvoltage limitation branch road, because system voltage is limited less than overvoltage
The action threshold value of branch road, electric current rapid decrease finally when electric current, which drops to overvoltage, limits the cut-off current of branch road, completes to divide
It is disconnected.
10. under a kind of short-circuit condition of the breaker for middle pressure direct current distribution utilized described in claim any one of 1-7
Method for dividing, it comprises the following steps：
In first step (S1), on-line detecting system detects system power and reaches that given threshold or current-rising-rate reach
During given threshold, control system sends separating brake instruction；
In second step (S2), there is operating lag in high speed machine switch, half control type power semiconductor VD1 and VD3 are led
Logical, the electric current of main current loop starts to shift to series arm 13；
In third step (S3), high speed machine switch is opened, and is shifted along with electric current to electric current transfer branch road, main current loop
Current over-zero, high speed machine switch blow-out；
In four steps (S4), control system triggering half control type power semiconductor VD2 conductings, with transfer capacitance voltage
Increase, the electric current of branch road 1 is gradually reduced；
In the 5th step (S5), as the electric current of branch road 1 is reduced to zero, half control type power semiconductor VD1 current over-zeros are closed
It is disconnected；
In the 6th step (S5), electric current is completely transferred to after branch road 2 and branch road 4, triggers half control type power semiconductor
VD4 is turned on, and is negative due to shifting electric capacity C and half control type power semiconductor VD4 voltages, electric current starts to shift to branch road 4；
In the 7th step (S7), the electric current of branch road 3 is gradually decrease to zero, half control type power semiconductor VD3 circuit zero passages
Shut-off；
In the 8th step (S8), with transfer capacitance voltage increase, after the threshold value for reaching overvoltage limitation branch road, overvoltage
Branch road conducting is limited, electric current starts to overvoltage limitation branch road transfer；
In the 9th step (S9), because system voltage is less than the conduction threshold that overvoltage limits branch road, overvoltage limitation branch road
Electric current is quickly decreased to zero, completes to cut-off.
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| CN201710413761.3A CN107257121A (en) | 2017-06-05 | 2017-06-05 | A kind of breaker and its input method for dividing for middle pressure direct current distribution |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258669A (en) * | 2018-02-05 | 2018-07-06 | 全球能源互联网研究院有限公司 | A kind of secondary phase changing type direct current limiter and its control method |
| CN110854827A (en) * | 2019-10-25 | 2020-02-28 | 深圳供电局有限公司 | Protection system of direct current residual current circuit breaker |
| CN111355213A (en) * | 2018-12-21 | 2020-06-30 | 平高集团有限公司 | Direct current breaker |
| US10819112B1 (en) | 2019-03-27 | 2020-10-27 | Abb Schweiz Ag | Feeder line fault response using direct current interconnection system |
| CN111937263A (en) * | 2018-05-29 | 2020-11-13 | 菲尼克斯电气公司 | Flexible circuit breaker |
| US10971934B2 (en) | 2018-12-31 | 2021-04-06 | Abb Schweiz Ag | Distribution networks with flexible direct current interconnection system |
| CN112748328A (en) * | 2019-10-31 | 2021-05-04 | 西安西电高压开关有限责任公司 | Monitoring circuit, electromagnetic repulsion mechanism and circuit breaker |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219698A (en) * | 2013-02-06 | 2013-07-24 | 西安交通大学 | Mixing type direct-current breaker |
| CN103346531A (en) * | 2013-02-06 | 2013-10-09 | 西安交通大学 | Bidirectional breaking-based mixing type circuit breaker |
| CN106532657A (en) * | 2016-11-03 | 2017-03-22 | 中国电力科学研究院 | Direct current circuit breaker and circuit breaking method for direct current power transmission system |
-
2017
- 2017-06-05 CN CN201710413761.3A patent/CN107257121A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219698A (en) * | 2013-02-06 | 2013-07-24 | 西安交通大学 | Mixing type direct-current breaker |
| CN103346531A (en) * | 2013-02-06 | 2013-10-09 | 西安交通大学 | Bidirectional breaking-based mixing type circuit breaker |
| CN106532657A (en) * | 2016-11-03 | 2017-03-22 | 中国电力科学研究院 | Direct current circuit breaker and circuit breaking method for direct current power transmission system |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258669A (en) * | 2018-02-05 | 2018-07-06 | 全球能源互联网研究院有限公司 | A kind of secondary phase changing type direct current limiter and its control method |
| CN108258669B (en) * | 2018-02-05 | 2022-11-25 | 全球能源互联网研究院有限公司 | Secondary phase-commutation type direct current limiter and control method thereof |
| CN111937263A (en) * | 2018-05-29 | 2020-11-13 | 菲尼克斯电气公司 | Flexible circuit breaker |
| CN111937263B (en) * | 2018-05-29 | 2021-10-29 | 菲尼克斯电气公司 | Flexible circuit breaker |
| CN111355213A (en) * | 2018-12-21 | 2020-06-30 | 平高集团有限公司 | Direct current breaker |
| CN111355213B (en) * | 2018-12-21 | 2023-09-01 | 平高集团有限公司 | Direct current breaker |
| US10971934B2 (en) | 2018-12-31 | 2021-04-06 | Abb Schweiz Ag | Distribution networks with flexible direct current interconnection system |
| US11121543B2 (en) | 2018-12-31 | 2021-09-14 | Abb Schweiz Ag | Fault mitigation in medium voltage distribution networks |
| US10819112B1 (en) | 2019-03-27 | 2020-10-27 | Abb Schweiz Ag | Feeder line fault response using direct current interconnection system |
| US11031773B2 (en) | 2019-03-27 | 2021-06-08 | Abb Power Grids Switzerland Ag | Transformer isolation response using direct current link |
| CN110854827A (en) * | 2019-10-25 | 2020-02-28 | 深圳供电局有限公司 | Protection system of direct current residual current circuit breaker |
| CN112748328A (en) * | 2019-10-31 | 2021-05-04 | 西安西电高压开关有限责任公司 | Monitoring circuit, electromagnetic repulsion mechanism and circuit breaker |
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Application publication date: 20171017 |