CN205178856U - IGBT change of current valve accuse system based on SMC -VBC -VM - Google Patents
IGBT change of current valve accuse system based on SMC -VBC -VM Download PDFInfo
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- CN205178856U CN205178856U CN201521028575.0U CN201521028575U CN205178856U CN 205178856 U CN205178856 U CN 205178856U CN 201521028575 U CN201521028575 U CN 201521028575U CN 205178856 U CN205178856 U CN 205178856U
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Abstract
The utility model relates to a IGBT change of current valve accuse system based on SMC -VBC -VM, it includes IGBT change of current valve, including a plurality of submodule pieces that comprise the IGBT pipe in the IGBT change of current valve, IGBT change of current valve module controller respectively with IGBT valve base controlgear, IGBT change of current valve carries out the information interaction, running state information transmission to the IGBT change of current valve component monitored control system of IGBT valve base controlgear each submodule piece in with received IGBT change of current valve, IGBT change of current valve component monitored control system carries out the information interaction through the standard interface with the current high -pressure flexible direct current current conversion station direct current control protection lug connection of system, each submodule piece state information transmission to high -pressure flexible direct current current conversion station direct current control protection system in the IGBT change of current valve that IGBT change of current valve component monitored control system will monitor, the flexible direct current current conversion station direct current control protection system of high pressure sends control information according to the submodule piece quantity that breaks down to IGBT change of current valve component monitored control system. The utility model discloses an operation of the flexible IGBT of the direct current transmission system change of current valve safety and stability of high pressure provides safeguard.
Description
Technical field
The utility model relates to a kind of high pressure flexible direct current current conversion station IGBT converter valve Ore-controlling Role, particularly about a kind of IGBT converter valve Ore-controlling Role based on SMC-VBC-VM applied in high pressure flexible direct current current conversion station.
Background technology
High pressure flexible direct current transmission of electricity is as a kind of novel HVDC Transmission Technology, be adopt adopt thyristor to differ greatly as converter valve with customary DC power transmission engineering IGBT (InsulatedGateBipolarTransistor) insulated gate bipolar transistor, compound full-control type voltage driven type power semiconductor as converter valve, the IGBT converter valve that wholly-controled device, switching speed are fast, frequency is high, loss is little with self-switching-off capability is also high pressure flexible direct current current conversion station important core electric equipment.
In the IGBT converter valve flexible DC power transmission engineering based on the wiring of MMC topology; in order to avoid electric current is excessive and the damage caused expensive IGBT converter valve device of rising rapidly, the valve control system controlling for the IGBT converter valve complete by IGBT converter valve equipment, monitor and protect has harsh technical requirement.
At present, high pressure flexible direct current converter valve majority adopts IGBT rectifier as elementary cell, is called converter bridge, generally forms commutation system by two or more converter bridge, realizes high-voltage flexible current conversion station AC-DC, direct current becomes the transmission of electricity function exchanged.Along with further developing of power electronic device, high pressure flexible direct current technology of transmission of electricity will have more wide range of application and better development prospect, and the reliability of IGBT converter valve Ore-controlling Role is most important to the runnability and fail safe that ensure high pressure flexible direct current transmission system IGBT converter valve.But adopt IGBT also not form corresponding technical scheme at present as the valve control system design of high pressure flexible direct current power transmission engineering converter valve.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide a kind of IGBT converter valve Ore-controlling Role based on SMC-VBC-VM, for high pressure flexible direct current transmission system IGBT converter valve safe and stable operation provides safeguard.
For achieving the above object, the utility model takes following technical scheme: a kind of IGBT converter valve Ore-controlling Role based on SMC-VBC-VM, it is characterized in that: it comprises IGBT converter valve, IGBT converter valve submodule controller, IGBT valve base control appliance and IGBT converter valve element monitors system, comprises some submodules be made up of IGBT pipe in described IGBT converter valve; Described IGBT converter valve submodule controller carries out information interaction with described IGBT valve base control appliance, IGBT converter valve respectively, the control information that described IGBT converter valve submodule controller transfers to for receiving described IGBT valve base control appliance, and this control information is transferred to each submodule in described IGBT converter valve; The running state information of each submodule in the described IGBT converter valve detected is transferred to described IGBT valve base control appliance by described IGBT converter valve submodule controller; The running state information of each submodule in the described IGBT converter valve received is transferred to described IGBT converter valve element monitors system by described IGBT valve base control appliance, described IGBT converter valve element monitors system to be directly connected with existing high pressure flexible direct current current conversion station DC control and protection system by standard interface carries out information interaction, and described high pressure flexible direct current current conversion station DC control and protection system provides alternating voltage needed for it through described IGBT converter valve element monitors system, IGBT valve base control appliance for described IGBT converter valve; Described IGBT converter valve element monitors system is by each submodule status information transmission in the described IGBT converter valve that monitors to described high pressure flexible direct current current conversion station DC control and protection system, and described high pressure flexible direct current current conversion station DC control and protection system sends control information according to the submodule quantity broken down to described IGBT converter valve element monitors system.
Further, described IGBT converter valve submodule controller is made up of some submodule controllers, submodule controller described in each be respectively used to monitor a submodule in described IGBT converter valve operating state, receive the control information that described IGBT valve base control appliance sends, and by the state transfer of submodule to described IGBT valve base control appliance.
Further, described IGBT valve base control appliance comprises current control unit, brachium pontis gathers control unit and brachium pontis segment control unit, described IGBT converter valve element monitors system carries out information interaction through described current control unit and described IGBT converter valve, described current control unit gathers control unit through described brachium pontis and described brachium pontis segment control unit carries out information interaction, and described brachium pontis segment control unit and described IGBT converter valve submodule controller carry out information interaction.
The utility model is owing to taking above technical scheme, it has the following advantages: 1, the utility model proposes the IGBT converter valve Ore-controlling Role based on IGBT converter valve submodule controller-IGBT valve base control appliance-IGBT converter valve element monitors system layer, distributed frame, for high pressure flexible direct current transmission system IGBT converter valve Ore-controlling Role provides the technical scheme of comparatively mature and reliable, for high pressure flexible direct current transmission system IGBT converter valve safe and stable operation provides technical guarantee.2, the utility model adopts standard external interface; communication is carried out by IGBT converter valve element monitors system and high pressure flexible direct current current conversion station DC control and protection system; ensure the Safe withdrawing of converter valve during normal operation and the fault of high pressure flexible direct current IGBT converter valve, also facilitate the later stage operation maintenance work of current conversion station.3, the Preservation tactics of the utility model IGBT valve base control appliance is divided into the three-level protectives such as submodule Preservation tactics, valve segment protect strategy and whole IGBT converter valve level Preservation tactics; real-time monitoring and protection has been carried out for bridge arm current and valve base control appliance oneself state; guarantee to ensure that when the intercommunication of valve base control appliance realizes fault IGBT converter valve Safe withdrawing runs, avoid the damage that IGBT converter valve is caused.The utility model can be applied in high pressure flexible direct current current conversion station.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1, the utility model provides a kind of IGBT converter valve Ore-controlling Role based on SMC-VBC-VM, it comprises IGBT converter valve, IGBT converter valve submodule controller, IGBT valve base control appliance VBC and IGBT converter valve element monitors system VM, wherein IGBT converter valve is existing apparatus, comprises some submodules be made up of elements such as IGBT pipe, diode D and electric capacity in it.IGBT converter valve submodule controller carries out information interaction with IGBT valve base control appliance VBC, IGBT converter valve respectively, the control information that IGBT converter valve submodule controller transfers to for receiving IGBT valve base control appliance VBC, and this control information is transferred to each submodule in IGBT converter valve; The running state information of each submodule in the IGBT converter valve detected is transferred to IGBT valve base control appliance VBC by IGBT converter valve submodule controller.It is indoor that IGBT valve base control appliance VBC is arranged on current conversion station secondary device, the running state information of each submodule in the IGBT converter valve received is transferred to IGBT converter valve element monitors system VM, IGBT converter valve element monitors system VM manages average break-make frequency and ON time for monitoring in IGBT converter valve opening of each IGBT pipe in each submodule with turn-off number of times and IGBT, and judges that each IGBT manages or the exception of other related elements or damage according to this conducting number of times, frequency and time; After all redundancy submodule are all damaged, IGBT converter valve element monitors system VM will give the alarm.IGBT converter valve element monitors system VM to be directly connected with existing high pressure flexible direct current current conversion station DC control and protection system by standard interface and to carry out information interaction, by high pressure flexible direct current current conversion station DC control and protection system through IGBT converter valve element monitors system VM, IGBT valve base control appliance VBC for IGBT converter valve provides alternating voltage needed for it; IGBT converter valve element monitors system VM by each submodule status information transmission in the IGBT converter valve that monitors to high pressure flexible direct current converter station DC control and protection system; high pressure flexible direct current current conversion station DC control and protection system sends control information according to the submodule quantity broken down to IGBT converter valve element monitors system VM; if the submodule quantity broken down exceedes redundancy submodule number, send converter valve locking information; to ensure that IGBT converter valve Safe withdrawing runs, greatly reduce fault coverage and the IGBT converter valve more economic loss brought of catastrophe failure.
In above-described embodiment; IGBT converter valve submodule controling appliance is for defencive functions such as overcurrent protection, the protection of IGBT driving malfunction, the protection of draw-out power supply error protection, overvoltage protection, optical communication and the protections of voltage acquisition path fault; it is by some SMC (SubModuleController; submodule controller) form; each SMC be respectively used to monitor a submodule in IGBT converter valve operating state, receive the submodule control information that IGBT valve base control appliance issues, and by the state transfer of submodule to IGBT valve base control appliance VBC.Meanwhile, when SMC detects that submodule breaks down, by SMC by the bypass of fault submodule, and by transmitting fault information to IGBT valve base control appliance VBC, can ensure that other submodule continues normal operation.
On respectively state in embodiment, IGBT valve base control appliance VBC comprises current control unit, brachium pontis gathers control unit and brachium pontis segment control unit, IGBT converter valve element monitors system VM carries out information interaction through current control unit and IGBT converter valve, current control unit gathers control unit through brachium pontis and brachium pontis segment control unit carries out information interaction, and brachium pontis segment control unit and IGBT converter valve submodule controller carry out information interaction.Wherein:
The control information that current control unit transfers to for receiving IGBT converter valve element monitors system VM, and calculate according to the brachium pontis reference voltage of IGBT converter valve the submodule quantity dropped into; Simultaneously, calculate current balance type controlled quentity controlled variable and joined in brachium pontis reference voltage, brachium pontis reference voltage final result is sent to brachium pontis and gathers control unit, each brachium pontis change of current value can be realized and be not more than the control objectives that 5%, IGBT converter valve ac-side current degree of unbalance is less than 1%.The bridge arm current measured value of current control unit also real-time reception, process IGBT converter valve, carries out the effect of quick overcurrent protection to IGBT converter valve.
Brachium pontis gathers the communication interface of control unit as current control unit and brachium pontis segment control unit, realize the mutual transmission of information, the brachium pontis reference voltage that received current control unit transfers to, action frequency and brachium pontis control information, and transfer to brachium pontis segment control unit by after the information block received.Simultaneously, brachium pontis gathers the submodule information of voltage that brachium pontis segment control unit transfers to by control unit and gathers, perform grouping cooperation control after sorting, to drop into needed for brachium pontis reference voltage and the submodule of excision carries out grouping and issues, realize balance of voltage of each grouping of brachium pontis.
Brachium pontis segment control unit, for gathering voltage and the state of each submodule in IGBT converter valve submodule controller, goes out the average voltage of this cross-talk module, maximum or minimum voltage according to state computation, and transfers to brachium pontis and gather control unit.Meanwhile, brachium pontis segment control unit gathers according to brachium pontis the input number of levels that control unit transfers to, and determines that the grouping of this brachium pontis needs the submodule number dropped into; Submodule state information according to gathering feedback carries out dropping into, cutting out Classifying Sum, sorts to the submodule capacitor voltage size that can drop into or cut out; Gather according to brachium pontis input that control unit transfers to or cut out number and actual current direction, switching control being carried out to different submodules, guarantees that the submodule capacitor voltage of segmentation maintains a rational scope.
In above-described embodiment, for improving direct current system converter valve reliability of operation, sensitivity and correctness, current control unit, brachium pontis gather control unit and brachium pontis segment control unit all adopts two redundancy backup principle to arrange, two cover system independent operatings under normal circumstances, a set of as main system, a set of conduct is from system.
On respectively state in embodiment, IGBT converter valve element monitors system VM is for the state of each IGBT pipe and submodule of monitoring IGBT converter valve, it also comprises a display screen, can be carried out the state information and the inquiry of SOE event etc. of all IGBT converter valve of real-time, long-range display by display screen.IGBT converter valve element monitors system VM also has submodule voltage record wave energy, and antithetical phrase module capacitance balance of voltage effect carries out off-line monitoring, for carrying out Fault Mechanism Analysis.
In sum, the utility model in use, when a failure occurs, if the submodule number that IGBT converter valve is damaged exceeds redundancy submodule number, thus when causing operating IGBT converter valve to face more serious damage, IGBT converter valve element monitors system VM will by high pressure flexible direct current current conversion station DC control and protection system trigger protection, fault trip information is sent to IGBT converter valve element monitors system VM, send fault trip information by IGBT converter valve element monitors system VM standard interface equipment to IGBT converter valve again and make converter valve locking, ensure that IGBT converter valve Safe withdrawing runs.
The various embodiments described above are only for illustration of the utility model; the structure of each parts, size, setting position and shape all can change to some extent; on the basis of technical solutions of the utility model; all improvement of carrying out individual part according to the utility model principle and equivalents, all should not get rid of outside protection range of the present utility model.
Claims (3)
1. the IGBT converter valve Ore-controlling Role based on SMC-VBC-VM, it is characterized in that: it comprises IGBT converter valve, IGBT converter valve submodule controller, IGBT valve base control appliance and IGBT converter valve element monitors system, comprises some submodules be made up of IGBT pipe in described IGBT converter valve; Described IGBT converter valve submodule controller carries out information interaction with described IGBT valve base control appliance, IGBT converter valve respectively, the control information that described IGBT converter valve submodule controller transfers to for receiving described IGBT valve base control appliance, and this control information is transferred to each submodule in described IGBT converter valve; The running state information of each submodule in the described IGBT converter valve detected is transferred to described IGBT valve base control appliance by described IGBT converter valve submodule controller; The running state information of each submodule in the described IGBT converter valve received is transferred to described IGBT converter valve element monitors system by described IGBT valve base control appliance, described IGBT converter valve element monitors system to be directly connected with existing high pressure flexible direct current current conversion station DC control and protection system by standard interface carries out information interaction, and described high pressure flexible direct current current conversion station DC control and protection system provides alternating voltage needed for it through described IGBT converter valve element monitors system, IGBT valve base control appliance for described IGBT converter valve; Described IGBT converter valve element monitors system is by each submodule status information transmission in the described IGBT converter valve that monitors to described high pressure flexible direct current current conversion station DC control and protection system, and described high pressure flexible direct current current conversion station DC control and protection system sends control information according to the submodule quantity broken down to described IGBT converter valve element monitors system.
2. as claimed in claim 1 based on the IGBT converter valve Ore-controlling Role of SMC-VBC-VM, it is characterized in that: described IGBT converter valve submodule controller is made up of some submodule controllers, submodule controller described in each be respectively used to monitor a submodule in described IGBT converter valve operating state, receive the control information that described IGBT valve base control appliance sends, and by the state transfer of submodule to described IGBT valve base control appliance.
3. as claimed in claim 1 or 2 based on the IGBT converter valve Ore-controlling Role of SMC-VBC-VM, it is characterized in that: described IGBT valve base control appliance comprises current control unit, brachium pontis gathers control unit and brachium pontis segment control unit, described IGBT converter valve element monitors system carries out information interaction through described current control unit and described IGBT converter valve, described current control unit gathers control unit through described brachium pontis and described brachium pontis segment control unit carries out information interaction, described brachium pontis segment control unit and described IGBT converter valve submodule controller carry out information interaction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521028575.0U CN205178856U (en) | 2015-12-10 | 2015-12-10 | IGBT change of current valve accuse system based on SMC -VBC -VM |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521028575.0U CN205178856U (en) | 2015-12-10 | 2015-12-10 | IGBT change of current valve accuse system based on SMC -VBC -VM |
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| CN205178856U true CN205178856U (en) | 2016-04-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375746A (en) * | 2015-12-10 | 2016-03-02 | 国家电网公司 | SMC-VBC-VM-based valve control system for IGBT converter valve |
| CN107783519A (en) * | 2017-09-29 | 2018-03-09 | 南京南瑞继保电气有限公司 | A kind of converter valve Control protection system framework |
| CN111463754A (en) * | 2020-04-10 | 2020-07-28 | 国家电网有限公司 | Converter valve overcurrent protection method and system |
| CN111478289A (en) * | 2020-04-14 | 2020-07-31 | 国家电网有限公司 | Converter valve overvoltage protection method and system |
| 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 |
-
2015
- 2015-12-10 CN CN201521028575.0U patent/CN205178856U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375746A (en) * | 2015-12-10 | 2016-03-02 | 国家电网公司 | SMC-VBC-VM-based valve control system for IGBT converter valve |
| CN107783519A (en) * | 2017-09-29 | 2018-03-09 | 南京南瑞继保电气有限公司 | A kind of converter valve Control protection system framework |
| CN111463754A (en) * | 2020-04-10 | 2020-07-28 | 国家电网有限公司 | Converter valve overcurrent protection method and system |
| CN111478289A (en) * | 2020-04-14 | 2020-07-31 | 国家电网有限公司 | Converter valve overvoltage protection method and system |
| CN111478289B (en) * | 2020-04-14 | 2022-07-05 | 国家电网有限公司 | Converter valve overvoltage protection method and system |
| 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 |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee after: State Power Economic Research Institute Patentee after: State Grid Corporation of China Co-patentee after: Beijing Wanglian HVDC Engineering Technology Co., Ltd. Co-patentee after: China Electric Power Construction Group Fujian electric survey and Design Institute Co., Ltd. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee before: State Power Economic Research Institute Patentee before: State Grid Corporation of China Co-patentee before: Beijing Wanglian HVDC Engineering Technology Co., Ltd. Co-patentee before: Fujian Electric Power Survey and Design Institute |
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| CP01 | Change in the name or title of a patent holder |