CN105262063A - System and method for protecting IGBT valve in high-voltage and direct-current circuit breaker - Google Patents
System and method for protecting IGBT valve in high-voltage and direct-current circuit breaker Download PDFInfo
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- CN105262063A CN105262063A CN201510705627.1A CN201510705627A CN105262063A CN 105262063 A CN105262063 A CN 105262063A CN 201510705627 A CN201510705627 A CN 201510705627A CN 105262063 A CN105262063 A CN 105262063A
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- 238000012360 testing method Methods 0.000 claims description 4
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Abstract
The invention provides a system and a method for protecting the IGBT valve in a high-voltage and direct-current circuit breaker. The system comprises circuit breaker controllers, a MOV return unit, detection units, valve base control apparatuses, rapid mechanical switch controllers, and a sub-module control unit. The MOV return unit and the detection units are connected with the circuit breaker controllers in a one-way mode. The valve base control apparatuses and the rapid mechanical switch controllers are connected with the circuit breaker controllers in a two-way mode. The sub-module control unit and the valve base control apparatuses are connected in a two-way mode. According to the system and the method for protecting the IGBT valve in a high-voltage and direct-current circuit breaker provided by the invention, the reliability of the circuit breaker controllers is improved, protection to the high-voltage and direct-current circuit breaker is of clear-cut labor division and clear responsibility, and the design is simple and reliable. The IGBT valve can be protected accurately through sub-module protection action configuration and VBC global protection action configuration, and the reliability of the IGBT value in the high-voltage and direct-current circuit breaker is improved.
Description
Technical field
The present invention relates to a kind of guard method, be specifically related to IGBT valve protection system and method in a kind of high voltage DC breaker.
Background technology
Along with the development of high-voltage great-current semiconductor device and power electronic technology, high voltage dc transmission technology, Technology of HVDC based Voltage Source Converter, direct current network technology etc. obtains increasing concern and application.Owing to when there is the bipolar short circuit of DC side in flexible DC power transmission circuit, direct current rises fast, and current-rising-rate up to 3kA/ms, and does not effectively stop the rising of short circuit current by flexible direct current converter valve self, if do not adopted an effective measure, the damage of converter valve equipment can be caused.High voltage DC breaker for flexible DC power transmission equipment can disengagement failure electric current at short notice, isolated fault, protection converter valve.
Application number be 201510089088.3 patent of invention disclose a kind of over-current protection method of flexible direct current multilevel converter, valve control electronic installation, control protective unit and detection system; this invention utilizes the brachium pontis overcurrent protection of valve control electronic equipment and the configuration of PC control protection system to cooperatively interact in definite value and sequential; when voltage-source type multilevel converter generation ac bus or brachium pontis fault, provide protection to ensure again flexible direct current system continuous service target simultaneously.But its protection is relatively single, the protection requirement of valve can not be met.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides IGBT valve protection system and method in a kind of high voltage DC breaker, improve the reliability of breaker controller, simultaneously by clear and definite for the division of labor of the protection range of high voltage DC breaker, responsibility is clear, and simplicity of design is reliable; The configuration of submodule protection act and VBC global protecting action configuration can be protected accurately to IGBT valve, improve the reliability of IGBT valve in high voltage DC breaker.
In order to realize foregoing invention object, the present invention takes following technical scheme:
The invention provides IGBT valve protection system in a kind of high voltage DC breaker, described system comprise breaker controller, MOV returns unit, detecting unit, valve base control appliance, Fast mechanical switch controller and submodule control unit; Described MOV returns that unit, detecting unit are unidirectional with breaker controller to be respectively connected, and described valve base control appliance and Fast mechanical switch are bi-directionally connected with breaker controller respectively, and described submodule control unit and valve base control appliance are bi-directionally connected.
Described high voltage DC breaker comprises Fast mechanical switch, submodule and lightning arrester; Described submodule comprises IGBT valve; After described Fast mechanical switch is connected with submodule, in parallel with lightning arrester.
Described breaker controller comprises breaker controller A and breaker controller B;
Described detecting unit comprises detecting unit A, detecting unit B and detecting unit C;
Described Fast mechanical switch controller comprises Fast mechanical switch controller A and Fast mechanical switch controller B;
Described valve base control appliance comprises valve base control appliance A and valve base control appliance B.
Described system connects flexible direct current converter station, and described flexible direct current converter station comprises flexible direct current converter station A and flexible direct current converter station B;
Described breaker controller A and flexible direct current converter station A is bi-directionally connected, and is bi-directionally connected with flexible direct current converter station B simultaneously;
Described breaker controller B flexible direct current converter station A is bi-directionally connected, and is bi-directionally connected with flexible direct current converter station B simultaneously.
Described MOV returns unit and is connected with breaker controller A is unidirectional, is connected with breaker controller B is unidirectional simultaneously;
Described detecting unit A, detecting unit B and detecting unit C are connected with breaker controller A is unidirectional respectively, and three is also connected with breaker controller B is unidirectional simultaneously respectively;
Described Fast mechanical switch controller A and breaker controller A is bi-directionally connected, and is bi-directionally connected with breaker controller B simultaneously; Described Fast mechanical switch controller B and breaker controller A is bi-directionally connected, and is bi-directionally connected with breaker controller B simultaneously;
Described valve base control appliance A and breaker controller A is bi-directionally connected, and described valve base control appliance B and breaker controller B is bi-directionally connected.
Described valve base control appliance comprises core board, interface board, backboard and power panel.
The present invention also provides a kind of IGBT valve protection method in high voltage DC breaker, said method comprising the steps of:
Step 1: valve base control appliance is monitored submodule, when submodule breaks down, the fault message of submodule 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 submodule, complete the control to submodule;
Step 2: valve base control appliance detects breaker controller and the communication of himself, when occurring that in breaker controller and valve base control appliance communication overtime or valve base control appliance, interface board is long-term without when return, valve base control appliance reports the request of application switching breaker controller;
Step 3: the power panel of valve base control appliance to its inside monitors, when power panel breaks down, valve base control appliance reports the fault message of power panel to breaker controller;
Step 4: breaker controller and valve base control appliance smoothing switching separately, when occurring to breaker controller, flexible direct current converter station carries out that active switches, communication failure between valve base controller and breaker controller, communication failure between breaker controller and flexible direct current converter station, current system built in self testing be abnormal, between valve base controller and detecting unit during communication abnormality, be switched to breaker controller for subsequent use by the breaker controller broken down, be switched to valve base control appliance for subsequent use by the valve base control appliance broken down simultaneously.
In described step 1, the fault that submodule occurs comprise submodule without return, submodule frequently verifies mistake, the submodule report error rate exceeds standard, submodule is got can fault and submodule overvoltage.
Compared with immediate prior art, technical scheme provided by the invention has following beneficial effect:
1) the present invention improves the reliability of breaker controller by adopting two redundancy protection architecture;
2) the present invention is by clear and definite for the division of labor of the protection range of high voltage DC breaker, and responsibility is clear, and simplicity of design is reliable;
3) the submodule protection act that the present invention proposes configures and VBC global protecting action configuration can be protected accurately to IGBT valve, improves the reliability of IGBT valve in high voltage DC breaker.
Accompanying drawing explanation
Fig. 1 is IGBT valve protection system construction drawing in embodiment of the present invention mesohigh DC circuit breaker.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
The invention provides IGBT valve protection system and method in a kind of high voltage DC breaker; the IGBT valve of high voltage DC breaker is as core, the key equipment of high voltage DC breaker; ensure its safe and reliable stable operation; be not only the requirement of system to device, the requirement of unit protection self especially.The application at utmost ensures the normal operation of high voltage DC breaker valve.
Valve base control appliance (ValueBaseController; VBC) can according to the requirement of breaker control protection system; by the unblock of higher level block signal reasonably issue major loop and transfer branch road submodule (Sub-Module; SM); and protect according to the state information on each submodule; and by breakdown judge result feedback to control and protection unit, by control and protection unit, more high-rise protection is carried out to primary equipment and judge.The content of concrete function comprises:
(1) tripping action n-back test: calculate and superior instructions according to self, complete each process of breaker actuation smoothly;
(2) valve monitoring defencive function: in running, can monitor primary equipment valve, judge fault, and complete the protection act in own range;
(3) self-inspection and redundancy handoff functionality: VBC detect the ruuning situation of self in real time, as: power failure, intercommunication time-out etc.; Once note abnormalities, the rational approaches such as warning, switching, stoppage in transit will be taked, ensure the reliability service of system.
The invention provides IGBT valve protection system in a kind of high voltage DC breaker, as Fig. 1, described system comprises breaker controller, MOV (MetalOxideVaristor, i.e. metal oxide piezo-resistance) returns unit, detecting unit, valve base control appliance, Fast mechanical switch controller and submodule control unit; Described MOV returns that unit, detecting unit are unidirectional with breaker controller to be respectively connected, and described valve base control appliance and Fast mechanical switch are bi-directionally connected with breaker controller respectively, and described submodule control unit and valve base control appliance are bi-directionally connected.
Described high voltage DC breaker comprises Fast mechanical switch, submodule and lightning arrester; Described submodule comprises IGBT valve; After described Fast mechanical switch is connected with submodule, in parallel with lightning arrester.
Described breaker controller comprises breaker controller A and breaker controller B;
Described detecting unit comprises detecting unit A, detecting unit B and detecting unit C;
Described Fast mechanical switch controller comprises Fast mechanical switch controller A and Fast mechanical switch controller B;
Described valve base control appliance comprises valve base control appliance A and valve base control appliance B.
Described system connects flexible direct current converter station, and described flexible direct current converter station comprises flexible direct current converter station A and flexible direct current converter station B;
Described breaker controller A and flexible direct current converter station A is bi-directionally connected, and is bi-directionally connected with flexible direct current converter station B simultaneously;
Described breaker controller B flexible direct current converter station A is bi-directionally connected, and is bi-directionally connected with flexible direct current converter station B simultaneously.
Described MOV returns unit and is connected with breaker controller A is unidirectional, is connected with breaker controller B is unidirectional simultaneously;
Described detecting unit A, detecting unit B and detecting unit C are connected with breaker controller A is unidirectional respectively, and three is also connected with breaker controller B is unidirectional simultaneously respectively;
Described Fast mechanical switch controller A and breaker controller A is bi-directionally connected, and is bi-directionally connected with breaker controller B simultaneously; Described Fast mechanical switch controller B and breaker controller A is bi-directionally connected, and is bi-directionally connected with breaker controller B simultaneously;
Described valve base control appliance A and breaker controller A is bi-directionally connected, and described valve base control appliance B and breaker controller B is bi-directionally connected.
Described valve base control appliance comprises core board, interface board, backboard and power panel.
The present invention also provides a kind of IGBT valve protection method in high voltage DC breaker, said method comprising the steps of:
Step 1: valve base control appliance is monitored submodule, when submodule breaks down, the fault message of submodule 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 submodule, complete the control to submodule;
Step 2: valve base control appliance detects breaker controller and the communication of himself, when occurring that in breaker controller and valve base control appliance communication overtime or valve base control appliance, interface board is long-term without when return, valve base control appliance reports the request of application switching breaker controller;
Step 3: the power panel of valve base control appliance to its inside monitors, when power panel breaks down, valve base control appliance reports the fault message of power panel to breaker controller;
Step 4: breaker controller and valve base control appliance smoothing switching separately, when occurring to breaker controller, flexible direct current converter station carries out that active switches, communication failure between valve base controller and breaker controller, communication failure between breaker controller and flexible direct current converter station, current system built in self testing be abnormal, between valve base controller and detecting unit during communication abnormality, be switched to breaker controller for subsequent use by the breaker controller broken down, be switched to valve base control appliance for subsequent use by the valve base control appliance broken down simultaneously.
In described step 1, the fault that submodule occurs comprise submodule without return, submodule frequently verifies mistake, the submodule report error rate exceeds standard, submodule is got can fault and submodule overvoltage.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; those of ordinary skill in the field still can modify to the specific embodiment of the present invention with reference to above-described embodiment or equivalent replacement; these do not depart from any amendment of spirit and scope of the invention or equivalent replacement, are all applying within the claims of the present invention awaited the reply.
Claims (8)
1. an IGBT valve protection system in high voltage DC breaker, is characterized in that: described system comprises breaker controller, MOV returns unit, detecting unit, valve base control appliance, Fast mechanical switch controller and submodule control unit; Described MOV returns that unit, detecting unit are unidirectional with breaker controller to be respectively connected, and described valve base control appliance and Fast mechanical switch are bi-directionally connected with breaker controller respectively, and described submodule control unit and valve base control appliance are bi-directionally connected.
2. IGBT valve protection system in high voltage DC breaker according to claim 1, is characterized in that: described high voltage DC breaker comprises Fast mechanical switch, submodule and lightning arrester; Described submodule comprises IGBT valve; After described Fast mechanical switch is connected with submodule, in parallel with lightning arrester.
3. IGBT valve protection system in high voltage DC breaker according to claim 1, is characterized in that: described breaker controller comprises breaker controller A and breaker controller B;
Described detecting unit comprises detecting unit A, detecting unit B and detecting unit C;
Described Fast mechanical switch controller comprises Fast mechanical switch controller A and Fast mechanical switch controller B;
Described valve base control appliance comprises valve base control appliance A and valve base control appliance B.
4. IGBT valve protection system in high voltage DC breaker according to claim 3, is characterized in that: described system connects flexible direct current converter station, and described flexible direct current converter station comprises flexible direct current converter station A and flexible direct current converter station B;
Described breaker controller A and flexible direct current converter station A is bi-directionally connected, and is bi-directionally connected with flexible direct current converter station B simultaneously;
Described breaker controller B flexible direct current converter station A is bi-directionally connected, and is bi-directionally connected with flexible direct current converter station B simultaneously.
5. IGBT valve protection system in the high voltage DC breaker according to claim 3 or 4, is characterized in that: described MOV returns unit and is connected with breaker controller A is unidirectional, is connected with breaker controller B is unidirectional simultaneously;
Described detecting unit A, detecting unit B and detecting unit C are connected with breaker controller A is unidirectional respectively, and three is also connected with breaker controller B is unidirectional simultaneously respectively;
Described Fast mechanical switch controller A and breaker controller A is bi-directionally connected, and is bi-directionally connected with breaker controller B simultaneously; Described Fast mechanical switch controller B and breaker controller A is bi-directionally connected, and is bi-directionally connected with breaker controller B simultaneously;
Described valve base control appliance A and breaker controller A is bi-directionally connected, and described valve base control appliance B and breaker controller B is bi-directionally connected.
6. IGBT valve protection system in high voltage DC breaker according to claim 3, is characterized in that: described valve base control appliance comprises core board, interface board, backboard and power panel.
7. an IGBT valve protection method in high voltage DC breaker, is characterized in that: said method comprising the steps of:
Step 1: valve base control appliance is monitored submodule, when submodule breaks down, the fault message of submodule 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 submodule, complete the control to submodule;
Step 2: valve base control appliance detects breaker controller and the communication of himself, when occurring that in breaker controller and valve base control appliance communication overtime or valve base control appliance, interface board is long-term without when return, valve base control appliance reports the request of application switching breaker controller;
Step 3: the power panel of valve base control appliance to its inside monitors, when power panel breaks down, valve base control appliance reports the fault message of power panel to breaker controller;
Step 4: breaker controller and valve base control appliance smoothing switching separately, when occurring to breaker controller, flexible direct current converter station carries out that active switches, communication failure between valve base controller and breaker controller, communication failure between breaker controller and flexible direct current converter station, current system built in self testing be abnormal, between valve base controller and detecting unit during communication abnormality, be switched to breaker controller for subsequent use by the breaker controller broken down, be switched to valve base control appliance for subsequent use by the valve base control appliance broken down simultaneously.
8. IGBT valve protection method in high voltage DC breaker according to claim 7; it is characterized in that: in described step 1, the fault that submodule occurs comprise submodule without return, submodule frequently verifies mistake, the submodule report error rate exceeds standard, submodule is got can fault and submodule overvoltage.
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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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| 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 CN105262063B (en) | 2018-08-14 |
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Cited By (7)
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| 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 |
| CN107294073A (en) * | 2017-08-15 | 2017-10-24 | 南京南瑞继保电气有限公司 | A kind of Control protection system of mixed topology dc circuit breaker |
| CN108683260A (en) * | 2018-06-13 | 2018-10-19 | 许继集团有限公司 | Suitable for the redundancy control system of direct current transportation, method and management and control device |
| CN108808849A (en) * | 2017-04-28 | 2018-11-13 | 南京南瑞继保电气有限公司 | A kind of interface allocation method and system |
| CN109888749A (en) * | 2019-03-20 | 2019-06-14 | 国网冀北电力有限公司检修分公司 | A kind of dc circuit breaker control method and device |
| CN111313559A (en) * | 2020-03-31 | 2020-06-19 | 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 |
| CN113810258A (en) * | 2020-06-17 | 2021-12-17 | 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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| CN108808849A (en) * | 2017-04-28 | 2018-11-13 | 南京南瑞继保电气有限公司 | A kind of interface allocation method and system |
| 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 |
| CN107294073A (en) * | 2017-08-15 | 2017-10-24 | 南京南瑞继保电气有限公司 | A kind of Control protection system of mixed topology dc circuit breaker |
| CN108683260A (en) * | 2018-06-13 | 2018-10-19 | 许继集团有限公司 | Suitable for the redundancy control system of direct current transportation, method and management and control device |
| CN109888749A (en) * | 2019-03-20 | 2019-06-14 | 国网冀北电力有限公司检修分公司 | A kind of dc circuit breaker control method and device |
| 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 |
| CN111313559A (en) * | 2020-03-31 | 2020-06-19 | 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 |
| 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 |
| CN113810258A (en) * | 2020-06-17 | 2021-12-17 | 南京南瑞继保电气有限公司 | Control system based on N-by-N redundant network topology structure |
| WO2021253960A1 (en) * | 2020-06-17 | 2021-12-23 | 南京南瑞继保电气有限公司 | Control system with crossed multi-ring-network redundant network topology structure |
| 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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