CN105262063B - IGBT valve protection system and method in a kind of high voltage DC breaker - Google Patents
IGBT valve protection system and method in a kind of high voltage DC breaker Download PDFInfo
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- CN105262063B CN105262063B CN201510705627.1A CN201510705627A CN105262063B CN 105262063 B CN105262063 B CN 105262063B CN 201510705627 A CN201510705627 A CN 201510705627A CN 105262063 B CN105262063 B CN 105262063B
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Abstract
IGBT valve protection system and method in a kind of high voltage DC breaker of present invention offer, system includes breaker controller, MOV returning units, detection unit, valve base control device, Fast mechanical switch controller and submodule block control unit；MOV returning units, detection unit are unidirectionally connect with breaker controller respectively, and valve base control device and Fast mechanical switch are bi-directionally connected with breaker controller respectively, and submodule block control unit is bi-directionally connected with valve base control device.IGBT valve protections system and method in high voltage DC breaker provided by the invention improve the reliability of breaker controller, while the protection domain of high voltage DC breaker being divided the work and is defined, and responsibility is clear, and design is simple and reliable；Submodule protection act configures and the action configuration of VBC global protectings can accurately protect IGBT valves, improves the reliability of IGBT valves in high voltage DC breaker.
Description
Technical field
The present invention relates to a kind of guard methods, and in particular to IGBT valve protections system and side in a kind of high voltage DC breaker
Method.
Background technology
With the development of high-voltage great-current semiconductor devices and power electronic technique, high voltage dc transmission technology is flexible straight
Technology of transmission of electricity is flowed, DC grid technology etc. has obtained more and more concerns and application.Since flexible DC power transmission circuit is being sent out
When life DC side is bipolar short-circuit, DC current rapid increase, current-rising-rate is up to 3kA/ms, and cannot pass through flexible direct current
Converter valve itself effectively prevents the rising of short circuit current that from leading to the damage of converter valve equipment if do not adopted an effective measure.Needle
The high voltage DC breaker of flexible DC power transmission equipment can be changed in disengagement failure electric current, isolated fault, protection in a short time
Flow valve.
Application No. is 201510089088.3 patents of invention to disclose a kind of overcurrent of flexible direct current multilevel converter
Guard method, valve control electronic device, control protective unit and detecting system, the invention utilize valve control electronic equipment and host computer control
The bridge arm overcurrent protection of system protection system configuration cooperates in definite value and sequential, when voltage-source type multilevel converter occurs
When ac bus or bridge arm failure, protection is provided and ensures flexible direct current system continuous service target again simultaneously.But its guarantor
Shield is relatively single, can not meet the protection requirement of valve.
Invention content
In order to overcome the above-mentioned deficiencies of the prior art, IGBT valve protections system in a kind of high voltage DC breaker of present invention offer
System and method improve the reliability of breaker controller, while clear, duty that the protection domain of high voltage DC breaker is divided the work
It is clear to appoint, and design is simple and reliable；Submodule protection act configures and VBC global protectings action configuration can be accurate to the progress of IGBT valves
True protection improves the reliability of IGBT valves in high voltage DC breaker.
In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme that：
IGBT valve protection systems in a kind of high voltage DC breaker of present invention offer, the system comprises breaker controls
Device, MOV returning units, detection unit, valve base control device, Fast mechanical switch controller and submodule block control unit；It is described
MOV returning units, detection unit are unidirectionally connect with breaker controller respectively, the valve base control device and Fast mechanical switch
It is bi-directionally connected respectively with breaker controller, the submodule block control unit is bi-directionally connected with valve base control device.
The high voltage DC breaker includes Fast mechanical switch, submodule and arrester；The submodule includes IGBT
Valve；It is in parallel with arrester after the Fast mechanical switch is connected with submodule.
The breaker controller includes breaker controller A and breaker controller B；
The detection unit includes detection unit A, detection unit B and detection unit C；
The Fast mechanical switch controller includes Fast mechanical switch controller A and Fast mechanical switch controller B；
The valve base control device includes valve base control device A and valve base control device B.
The system connects flexible direct current converter station, and the flexible direct current converter station includes flexible direct current converter station A and soft
Property DC converter station B；
The breaker controller A and flexible direct current converter station A is bi-directionally connected, while two-way with flexible direct current converter station B
Connection；
The breaker controller B flexible direct current converter stations A is bi-directionally connected, at the same with the two-way companies of flexible direct current converter station B
It connects.
The MOV returning units are unidirectionally connect with breaker controller A, while unidirectionally being connect with breaker controller B；
The detection unit A, detection unit B and detection unit C are unidirectionally connect with breaker controller A respectively, San Zheye
It is unidirectionally connect with breaker controller B respectively simultaneously；
The Fast mechanical switch controller A and breaker controller A is bi-directionally connected, while bis- with breaker controller B
To connection；The Fast mechanical switch controller B and breaker controller A is bi-directionally connected, while two-way with breaker controller B
Connection；
The valve base control device A and breaker controller A is bi-directionally connected, the valve base control device B and breaker control
Device B processed is bi-directionally connected.
The valve base control device includes core board, interface board, backboard and power panel.
The present invention also provides a kind of IGBT valve protection methods in high voltage DC breaker, the described method comprises the following steps：
Step 1：Valve base control device is monitored submodule, and when submodule breaks down, the failure of submodule is believed
Breath is uploaded to core board by interface board, and fault message is converted to trigger command by core board, and trigger command is handed down to son
Module completes the control to submodule；
Step 2：Valve base control device is detected breaker controller and the communication of its own, when there is breaker control
In device processed and valve base control device communication overtime or valve base control device interface board for a long time without return when, valve base control device reports
The request of application switching breaker controller；
Step 3：Valve base control device monitors the power panel of its inside, when power panel breaks down, valve base control
Control equipment reports the fault message of power panel to breaker controller；
Step 4：Breaker controller and valve base control device are respectively taken over seamlessly, when there is flexible direct current converter station
Communication failure, breaker controller between breaker controller progress active switching, valve base controller and breaker controller
Lead between communication failure, current system built in self testing exception, valve base controller and detection unit between flexible direct current converter station
When letter is abnormal, spare breaker controller, while the valve by breaking down are switched to by the breaker controller to break down
Base control device is switched to spare valve base control device.
In the step 1, the failure that submodule occurs includes that submodule frequently verifies wrong, submodule without return, submodule
The report bit error rate is exceeded, submodule takes can failure and submodule overvoltage.
Compared with the immediate prior art, technical solution provided by the invention has the advantages that：
1) present invention improves the reliability of breaker controller by using dual redundant protection structure；
2) present invention divides the work the protection domain of high voltage DC breaker clear, and responsibility is clear, and design is simple and reliable；
3) submodule protection act configuration proposed by the present invention and the action configuration of VBC global protectings can carry out IGBT valves
Accurately protection, improves the reliability of IGBT valves in high voltage DC breaker.
Description of the drawings
Fig. 1 is IGBT valve protection system construction drawings in mesohigh dc circuit breaker of the embodiment of the present invention.
Specific implementation mode
Invention is further described in detail below in conjunction with the accompanying drawings.
IGBT valve protection system and method in a kind of high voltage DC breaker of present invention offer, high voltage DC breaker
Core of the IGBT valves as high voltage DC breaker, key equipment, ensure its operation securely and reliably stablized, are not only system pair
The requirement of device, even more the unit protection requirement of itself.The application utmostly ensures the normal fortune of high voltage DC breaker valve
Row.
Valve base control device (Value Base Controller, VBC) can protect wanting for system according to breaker control
Ask, by it is supervisory unlock block signal reasonably issue major loop and shift branch submodule (Sub-Module, SM), and
And protected according to the status information on each submodule, and breakdown judge result is fed back into control and protection unit, by controlling
The protection that protection location processed carries out primary equipment higher judges.The content of concrete function includes：
(1) tripping action executes function：According to itself calculating and superior instructions, each mistake of breaker actuation is smoothly completed
Journey；
(2) valve monitoring defencive function：In the process of running, primary equipment valve can be monitored, failure is made and is sentenced
It is disconnected, and complete the protection act in own range；
(3) self-test and redundancy handoff functionality：VBC detects the operating condition of itself in real time, such as：Power failure, intercommunication
Time-out etc.；Once noting abnormalities, the rational approaches such as alarm, switching, stoppage in transit will be taken, ensure the reliability service of system.
IGBT valve protection systems in a kind of high voltage DC breaker of present invention offer, such as Fig. 1, the system comprises breakers
Controller, MOV (Metal Oxide Varistor, i.e. metal oxide varistor) returning unit, detection unit, valve base control
Control equipment, Fast mechanical switch controller and submodule block control unit；The MOV returning units, detection unit respectively with open circuit
Device controller unidirectionally connects, and the valve base control device and Fast mechanical switch are bi-directionally connected with breaker controller respectively, institute
Submodule block control unit is stated to be bi-directionally connected with valve base control device.
The high voltage DC breaker includes Fast mechanical switch, submodule and arrester；The submodule includes IGBT
Valve；It is in parallel with arrester after the Fast mechanical switch is connected with submodule.
The breaker controller includes breaker controller A and breaker controller B；
The detection unit includes detection unit A, detection unit B and detection unit C；
The Fast mechanical switch controller includes Fast mechanical switch controller A and Fast mechanical switch controller B；
The valve base control device includes valve base control device A and valve base control device B.
The system connects flexible direct current converter station, and the flexible direct current converter station includes flexible direct current converter station A and soft
Property DC converter station B；
The breaker controller A and flexible direct current converter station A is bi-directionally connected, while two-way with flexible direct current converter station B
Connection；
The breaker controller B flexible direct current converter stations A is bi-directionally connected, at the same with the two-way companies of flexible direct current converter station B
It connects.
The MOV returning units are unidirectionally connect with breaker controller A, while unidirectionally being connect with breaker controller B；
The detection unit A, detection unit B and detection unit C are unidirectionally connect with breaker controller A respectively, San Zheye
It is unidirectionally connect with breaker controller B respectively simultaneously；
The Fast mechanical switch controller A and breaker controller A is bi-directionally connected, while bis- with breaker controller B
To connection；The Fast mechanical switch controller B and breaker controller A is bi-directionally connected, while two-way with breaker controller B
Connection；
The valve base control device A and breaker controller A is bi-directionally connected, the valve base control device B and breaker control
Device B processed is bi-directionally connected.
The valve base control device includes core board, interface board, backboard and power panel.
The present invention also provides a kind of IGBT valve protection methods in high voltage DC breaker, the described method comprises the following steps：
Step 1：Valve base control device is monitored submodule, and when submodule breaks down, the failure of submodule is believed
Breath is uploaded to core board by interface board, and fault message is converted to trigger command by core board, and trigger command is handed down to son
Module completes the control to submodule；
Step 2：Valve base control device is detected breaker controller and the communication of its own, when there is breaker control
In device processed and valve base control device communication overtime or valve base control device interface board for a long time without return when, valve base control device reports
The request of application switching breaker controller；
Step 3：Valve base control device monitors the power panel of its inside, when power panel breaks down, valve base control
Control equipment reports the fault message of power panel to breaker controller；
Step 4：Breaker controller and valve base control device are respectively taken over seamlessly, when there is flexible direct current converter station
Communication failure, breaker controller between breaker controller progress active switching, valve base controller and breaker controller
Lead between communication failure, current system built in self testing exception, valve base controller and detection unit between flexible direct current converter station
When letter is abnormal, spare breaker controller, while the valve by breaking down are switched to by the breaker controller to break down
Base control device is switched to spare valve base control device.
In the step 1, the failure that submodule occurs includes that submodule frequently verifies wrong, submodule without return, submodule
The report bit error rate is exceeded, submodule takes can failure and submodule overvoltage.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute
The those of ordinary skill in category field with reference to above-described embodiment still can to the present invention specific implementation mode modify or
Equivalent replacement, these are applying for this pending hair without departing from any modification of spirit and scope of the invention or equivalent replacement
Within bright claims.
Claims (7)
1. IGBT valve protections system in a kind of high voltage DC breaker, it is characterised in that：The system comprises breaker controller,
MOV returning units, detection unit, valve base control device, Fast mechanical switch controller and submodule block control unit；The MOV
Returning unit, detection unit are unidirectionally connect with breaker controller respectively, the valve base control device and Fast mechanical switch point
It is not bi-directionally connected with breaker controller, the submodule block control unit is bi-directionally connected with valve base control device；
The breaker controller includes breaker controller A and breaker controller B；
The detection unit includes detection unit A, detection unit B and detection unit C；
The Fast mechanical switch controller includes Fast mechanical switch controller A and Fast mechanical switch controller B；
The valve base control device includes valve base control device A and valve base control device B.
2. IGBT valve protections system in high voltage DC breaker according to claim 1, it is characterised in that：The high straightening
It includes Fast mechanical switch, submodule and arrester to flow breaker；The submodule includes IGBT valves；The Fast mechanical switch
It is in parallel with arrester after connecting with submodule.
3. IGBT valve protections system in high voltage DC breaker according to claim 1, it is characterised in that：The system connects
Flexible direct current converter station is connect, the flexible direct current converter station includes flexible direct current converter station A and flexible direct current converter station B；
The breaker controller A and flexible direct current converter station A is bi-directionally connected, while being bi-directionally connected with flexible direct current converter station B；
The breaker controller B flexible direct current converter stations A is bi-directionally connected, while being bi-directionally connected with flexible direct current converter station B.
4. IGBT valve protections system in high voltage DC breaker according to claim 1 or 3, it is characterised in that：The MOV
Returning unit is unidirectionally connect with breaker controller A, while unidirectionally being connect with breaker controller B；
The detection unit A, detection unit B and detection unit C are unidirectionally connect with breaker controller A respectively, and three is also simultaneously
It is unidirectionally connect with breaker controller B respectively；
The Fast mechanical switch controller A and breaker controller A is bi-directionally connected, at the same with the two-way companies of breaker controller B
It connects；The Fast mechanical switch controller B and breaker controller A is bi-directionally connected, at the same with the two-way companies of breaker controller B
It connects；
The valve base control device A and breaker controller A is bi-directionally connected, the valve base control device B and breaker controller B
It is bi-directionally connected.
5. IGBT valve protections system in high voltage DC breaker according to claim 1, it is characterised in that：The valve base control
Control equipment includes core board, interface board, backboard and power panel.
6. a kind of IGBT valve protections method in high voltage DC breaker, it is characterised in that：It the described method comprises the following steps：
Step 1：Valve base control device is monitored submodule, and when submodule breaks down, the fault message of submodule is logical
It crosses interface board and is uploaded to core board, fault message is converted to trigger command by core board, and trigger command is handed down to submodule,
Complete the control to submodule；
Step 2：Valve base control device is detected breaker controller and the communication of its own, when there is breaker controller
With interface board in valve base control device communication overtime or valve base control device for a long time without return when, valve base control device reports application
Switch the request of breaker controller；
Step 3：Valve base control device monitors the power panel of its inside, and when power panel breaks down, valve base control is set
It is standby to report the fault message of power panel to breaker controller；
Step 4：Breaker controller and valve base control device are respectively taken over seamlessly, when there is flexible direct current converter station to disconnected
Road device controller carries out communication failure between active switching, valve base controller and breaker controller, breaker controller and soft
Property DC converter station between communication failure, current system built in self testing be abnormal, it is different to be communicated between valve base controller and detection unit
Chang Shi is switched to spare breaker controller, while the valve base control by breaking down by the breaker controller to break down
Control equipment is switched to spare valve base control device.
7. IGBT valve protections method in high voltage DC breaker according to claim 6, it is characterised in that：The step 1
In, failure that submodule occurs, which includes submodule, frequently verifies that wrong, the submodule report bit error rate is exceeded, submodule without return, submodule
Block takes can failure and submodule overvoltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510705627.1A CN105262063B (en) | 2015-10-27 | 2015-10-27 | IGBT valve protection system and method in a kind of high voltage DC breaker |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510705627.1A CN105262063B (en) | 2015-10-27 | 2015-10-27 | IGBT valve protection system and method in a kind of high voltage DC breaker |
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| CN105262063B true CN105262063B (en) | 2018-08-14 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808849B (en) * | 2017-04-28 | 2021-10-01 | 南京南瑞继保电气有限公司 | Interface configuration method and system |
| CN106953295A (en) * | 2017-05-19 | 2017-07-14 | 南京南瑞继保电气有限公司 | A kind of high voltage DC breaker control system and method |
| CN107294073B (en) * | 2017-08-15 | 2021-02-09 | 南京南瑞继保电气有限公司 | Control protection system of hybrid topology direct current circuit breaker |
| CN108683260B (en) * | 2018-06-13 | 2020-10-27 | 许继集团有限公司 | Redundancy control system, method and management control device suitable for direct current transmission |
| CN109888749B (en) * | 2019-03-20 | 2021-04-09 | 国网冀北电力有限公司检修分公司 | Control method and device for direct current circuit breaker |
| CN110932245A (en) * | 2019-12-06 | 2020-03-27 | 全球能源互联网研究院有限公司 | Hybrid direct current circuit breaker, control protection device and method |
| CN111313559B (en) * | 2020-03-31 | 2022-03-15 | 全球能源互联网研究院有限公司 | Flexible direct-current power grid control protection and direct-current breaker interface communication control method and system |
| CN113810258B (en) * | 2020-06-17 | 2022-05-17 | 南京南瑞继保电气有限公司 | Control system based on N-by-N redundant network topology structure |
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