CN106483841A - A kind of field adjustable and the method for test circulation suppression strategy parameter - Google Patents
A kind of field adjustable and the method for test circulation suppression strategy parameter Download PDFInfo
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- CN106483841A CN106483841A CN201510530373.4A CN201510530373A CN106483841A CN 106483841 A CN106483841 A CN 106483841A CN 201510530373 A CN201510530373 A CN 201510530373A CN 106483841 A CN106483841 A CN 106483841A
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Abstract
The present invention relates to a kind of method of field adjustable and test circulation suppression strategy parameter, the method adopts valve base control device VBC to realize, and the method includes：In the host computer man machine interface of valve monitoring unit, tuning parameter is set；Increase light transmission interface in valve monitoring unit, tuning parameter and fiber optic communication are sent to bridge arm current control unit；Increase receiving interface in bridge arm current control unit, poll scans receive information situation；Bridge arm current control unit increases parameters revision debugging routine, repeatedly changes debugging condition and policing parameter according to receive information, until debugging optimization；Comprehensive debugging result and parameter tuning result, unified upgrading valve base Application of control device module, remove debugging interface program and parameter modification program, complete through engineering approaches application；The technical scheme that the present invention provides avoids the detailed debugging process that engineering site changes software code repeatedly, introduces the risk of hidden danger during having evaded the debugging of sophisticated strategies and parameter tuning.
Description
Technical field
The present invention relates to the power electronics flexible direct-current transmission field of power system and in particular to a kind of field adjustable and test circulation
The method of suppression strategy parameter.
Background technology
When high-voltage dc transmission electrical domain is applied, converter valve needs hundreds of or even thousands of sons to modular multilevel (MMC) technology
Block coupled in series, each submodule must individually control, and as the interface equipment of Control protection system and converter valve, valve base controls
Equipment VBC carries operation control and the safeguard protection important task of all submodules and whole brachium pontis.
MMC DC transmission system three-phase brachium pontis due to modular multilevel technology is equivalent to the DC side of the system of being connected in parallel on.When
During steady-state operation, the voltage between each brachium pontis can not possibly be completely the same, therefore will necessarily produce circulation between three-phase brachium pontis, so that
Sinusoidal bridge arm current waveform is distorted, accordingly, it would be desirable to complete the realization of loop current suppression strategy in valve base control device VBC.
The debugging situation that loop current suppression strategy is carried out in common simulation software all completes in an ideal case, and the product of circulation
Life is then largely the non-ideal conditions due to device, and that is, discordance is produced, and therefore, its parameter tuning and strategy are debugged
Depend on the concrete debugging of engineering site situation to a greater extent.Needs are made concrete and careful adjustment to tactful each parameter and are adjusted,
And this tuning process needs repeatedly test and debugging to carry out.
Currently common policing algorithm debugging method is constantly to carry out parameter state according to emulation to adjust, thus to valve base control device
VBC is repeated the parameter modification programming of chip program, or runs programming repeatedly in emulator.Such mode, is not inconsistent
Close field engineering software stability and reliability use requirement, also do not meet the security requirement running valve.
Flexible direct current power transmission system engineering site debugging and test and policing parameter adjust be easily produce in engineering mistake and
Introduce the engineering link of product hidden danger, especially even more serious with modification software code in engineering site.
Design the situ method that the engineering strategy parameter testing of a set of novelty is adjusted, the system for flexible DC power transmission engineering can
By debugging and stable operation, there is vital effect.
Content of the invention
For solving above-mentioned deficiency of the prior art, it is an object of the invention to provide a kind of field adjustable and test circulation suppression strategy
The method of parameter, can complete the loop current suppression algorithm of valve base control device VBC in the debugging of engineering site implementation strategy and parameter
Adjust.
The purpose of the present invention is to be realized using following technical proposals：
A kind of method that the present invention provides field adjustable and test circulation suppression strategy parameter, it thes improvement is that, methods described
Realized using valve base control device VBC, described valve base control device VBC includes the bridge being connected with valve monitoring unit by optical fiber
Arm current control unit, brachium pontis collect control unit and brachium pontis segment control unit, and described valve monitoring unit is passed through with host computer
Netting twine connects；Described valve monitoring unit receives bridge arm current control unit, brachium pontis collects control unit, brachium pontis segment control unit
The information of the change of current, brachium pontis and flexible direct current defeated system self-condition that sends of each cabinet；Described bridge arm current control unit,
Brachium pontis collects control unit and brachium pontis segment control unit all includes controlling machine box, Core Feature panel and communication interface board；
Methods described includes：
In the host computer man machine interface of valve monitoring unit, tuning parameter is set；
Increase light in valve monitoring unit and send command interface, tuning parameter and fiber optic communication signal are sent and controls list to bridge arm current
Unit；
Increase in bridge arm current control unit and receive command interface, poll scans receive information situation；
Bridge arm current control unit increases parameters revision debugging routine, repeatedly changes debugging condition and policing parameter according to receive information,
Until debugging optimization；
Comprehensive debugging result and parameter tuning result, unified upgrading valve base Application of control device module, remove debugging interface module and
Parameter adapting module, completes through engineering approaches application.
Further, configure debugging function so as to every controlling cycle receives valve prison by optical fiber interface in bridge arm current control unit
Depending on cell data, such as do not receive, then do not deal with；As received, then the order passing through to receive enters into debugging mode,
Open debugging control switch；Again operational factor is changed by different tuning parameter setting commands, so that system is operationally changed in real time
Variable element, sends corresponding controlled state data by different querying commands, in order to be recorded on valve monitoring unit
Ripple and real-time display.
Further, on valve monitoring unit, configuration sends command interface so as to the control command of host computer can be passed through to brachium pontis
Current control unit sends corresponding control command, and as the state reception of valve base control device VBC, carries out each cycle
Data receiver, hews out internal memory simultaneously, to store the data receiving, when host computer calls record waveform, by the number of storage
Show according to being sent to host computer；
Host computer is configured, makes host computer possess each link block diagram of drafting and each link parameter configuration function and record wave energy,
Parameter configuration at each link of algorithm block diagram possesses fill in, send and query function so as to be able to ensure that data is activation success
And successfully modified, manually boot record ripple at any time, so that observation waveform situation and comparison effect simultaneously.
Further, according to current waveform, the Harmonic Conditions of assessment circulation, harmonic wave is down to minimum, as debugs optimization；
Further, described fiber optic communication is taken based on end-to-end Fibre Optical Communication Technology, according to data volume size and traffic rate choosing
Select；
Described end-to-end Fibre Optical Communication Technology refer to by two different entities between fiber optic applications layer connect One-to-one communication
Mode；
Described end-to-end Fibre Optical Communication Technology meets IEC60044-8 standard, fiber medium using physical layer, and traffic rate is 10Mbit/s；
Link layer meets the FT3 form of IEC60870-5-1；, on the basis of low and high level, recipient is to rise trailing edge as base for sender
Accurate communication mode.
The excellent effect that has of technical scheme that the present invention provides is：
Field adjustable and the method for test circulation suppression strategy parameter that present aspect proposes, it is to avoid engineering site changes software repeatedly
The detailed debugging process of code, introduces the risk of hidden danger during having evaded the debugging of sophisticated strategies and parameter tuning, meanwhile, this
Method simultaneously adopts system own resource, by the valve base control device VBC valve monitoring unit of itself, complete debugging, adjust and
A series of functions such as correction, save system resource, meanwhile, after debugging finishes, disposable upgrading, removes to system code
Debugging routine, makes System Error-tolerance Property higher, performance is more preferable.
Brief description
Fig. 1 is the composition structure chart of the valve base control device VBC that the present invention provides；
Fig. 2 is the present invention engineering site debugging providing and the method realization figure testing circulation suppression strategy algorithm；
Fig. 3 is the schematic diagram that the communication that the present invention provides adopts.
Specific embodiment
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described in further detail.
The following description and drawings fully illustrate specific embodiments of the present invention, to enable those skilled in the art to put into practice it
?.Other embodiments can include structure, logic, electric, process and other change.Embodiment only generation
The possible change of table.Unless explicitly requested, otherwise individually assembly and function are optional, and the order operating can change.
The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.The enforcement of the present invention
The scope of scheme includes the gamut of claims, and all obtainable equivalent of claims.Herein,
These embodiments of the present invention can individually or generally with term " invention " be represented, it is convenient that this is used for the purpose of, and
And if in fact disclosing the invention more than, the scope being not meant to automatically limit this application is any single invention or sends out
Bright design.
The present invention provides a kind of valve base control device VBC, as shown in figure 1, in Fig. 1, the valve base control of Technology of HVDC based Voltage Source Converter
The bridge arm current control unit that control equipment VBC includes being connected by optical fiber with valve monitoring unit, brachium pontis collect control unit, brachium pontis
Segment control unit；Described valve monitoring unit is connected by netting twine with host computer；Valve monitoring unit receives the every of each control unit
The information of valve, brachium pontis and system self-condition that individual cabinet sends.
The present invention provides a kind of method to above-mentioned valve base control device VBC field adjustable and test circulation suppression strategy parameter, its
Realization figure is as shown in Fig. 2 comprise the steps：
In the host computer man machine interface of valve monitoring unit, tuning parameter is set；
Increase light transmission interface in valve monitoring unit, tuning parameter and fiber optic communication signal are sent to bridge arm current control unit；
Increase receiving interface in bridge arm current control unit, poll scans receive information situation；Described receive information is tuning parameter；
Bridge arm current control unit increases parameters revision debugging routine, and carries out the modification of tuning parameter software program internal variable assignment,
Debugging condition and policing parameter are repeatedly changed according to receive information, until debugging optimization；
Comprehensive debugging result and parameter tuning result, unified upgrading valve base Application of control device module, remove debugging interface program and
Parameter modification program, completes through engineering approaches application.
Loop current suppression algorithm has significant role for the stable operation of flexible direct current power transmission system, and algorithm has in itself according to difference
Environment carries out the work that different parameters are adjusted, and adjusts especially for PID controller and controlling switch is removed to the superposition of each link
Effect, because being related to many-sided work such as multi-controller regulation and effectiveness comparison, is also a kind of gradual comparison in debugging process
Go forward one by one the debud mode of parameter tuning, therefore, if carrying out chip in-circuit emulation debugging to board at the scene, easily makes soft
Property DC transmission system operation conditions uncontrollable (situations such as divergence, vibration, power swing), repeatedly to program simultaneously
Modification also easily malfunctions, thus leading to the situation that system fault, operation conditions cannot be grasped to occur.
Using the valve monitoring VM unit of valve base controller VBC itself, the direct setting to parameter on host computer, by upper
Drawn loop current suppression algorithm each link block diagram and each link parameter setting are configured by machine, make debugging efforts simple, clear
Clear, flexible, in conjunction with VM to the record of |input paramete with record wave energy data writing function itself that possess, carry out meanwhile
After each setting parameter, the debugging result of voltage waveform, current waveform and active power, reactive power waveform is with reference to contrast, permissible
Convenient, fast, flexibly complete parameter testing work.
First, configure debugging function so as to every controlling cycle receives VM data by optical fiber interface in bridge arm current control unit,
As do not received, then do not deal with, such as receive, then the order passing through to receive enters into debugging mode, opens debugging control
Switch；Again by different tuning parameter setting commands come internal modification operational factor, so that system operationally can be changed in real time
Variable element, then send corresponding controlled state data by different querying commands, in order to carry out recording on VM ripple and
Show in real time.
Meanwhile, on valve monitoring VM, configuration sends command functions so as to can be by the order of host computer come to bridge arm current control
Unit processed sends corresponding control command.And as receiving with the state of VBC, carry out the data receiver of each cycle, open up simultaneously
Go out one piece of larger internal memory, to store the data receiving, so, when host computer calls record waveform, can be by storage
Data is activation shows to host computer.
Finally, also host computer to be configured, make host computer possess rendering algorithm each link block diagram and each link parameter configuration work(
And wave energy can be recorded.Parameter configuration at each link of algorithm block diagram possesses fill in, send, query function is so as to can be true
Protect data is activation successful and successfully modified, record ripple can also be manually booted at any time simultaneously, so that observation waveform situation and comparison effect.
In Fig. 3, fiber optic communication take based on end-to-end Fibre Optical Communication Technology, actually used in, can be according to data volume size
And traffic rate flexibly selects.Protocol format is as shown in table 1 below.
Table 1 protocol format table
In the present invention, the method for the debugging of flexible direct current power transmission system engineering site and test circulation suppression strategy parameter, can complete valve
The loop current suppression algorithm of base control device VBC is in the debugging of engineering site implementation strategy and adjusting of parameter.
Above example is only not intended to limit in order to technical scheme to be described, although with reference to above-described embodiment to the present invention
Be described in detail, those of ordinary skill in the art still the specific embodiment of the present invention can be modified or
Person's equivalent, these are all applying for pending this without departing from any modification of spirit and scope of the invention or equivalent
Within bright claims.
Claims (5)
1. a kind of method of field adjustable and test circulation suppression strategy parameter, it is characterized in that, methods described adopts valve base control device VBC to realize, the bridge arm current control unit that described valve base control device VBC includes being connected by optical fiber with valve monitoring unit, brachium pontis collect control unit and brachium pontis segment control unit, and described valve monitoring unit is connected by netting twine with host computer；Described valve monitoring unit reception bridge arm current control unit, the information of the change of current, the brachium pontis and flexible direct current defeated system self-condition that brachium pontis collects control unit, each cabinet of brachium pontis segment control unit sends；Described bridge arm current control unit, brachium pontis collect control unit and brachium pontis segment control unit all includes controlling machine box, Core Feature panel and communication interface board；
Methods described includes：
In the host computer man machine interface of valve monitoring unit, tuning parameter is set；
Increase light in valve monitoring unit and send command interface, tuning parameter and fiber optic communication signal are sent to bridge arm current control unit；
Increase in bridge arm current control unit and receive command interface, poll scans receive information situation；
Bridge arm current control unit increases parameters revision debugging routine, repeatedly changes debugging condition and policing parameter according to receive information, until debugging optimization；
Comprehensive debugging result and parameter tuning result, unified upgrading valve base Application of control device module, remove debugging interface module and parameter adapting module, complete through engineering approaches application.
2. the method for claim 1, it is characterised in that configuring debugging function so as to every controlling cycle receives valve monitoring cell data by optical fiber interface in bridge arm current control unit, does not such as receive, does not then deal with；As received, then the order passing through to receive enters into debugging mode, opens debugging control switch；Again operational factor is changed by different tuning parameter setting commands, make system operationally change parameter in real time, send corresponding controlled state data by different querying commands, in order to carrying out recording ripple on valve monitoring unit and showing in real time.
3. the method for claim 1, it is characterized in that, on valve monitoring unit, configuration sends command interface, the control command that host computer can be passed through sends corresponding control command to bridge arm current control unit, and as the state reception of valve base control device VBC, carries out the data receiver of each cycle, hew out internal memory simultaneously, to store the data receiving, when host computer calls record waveform, the data is activation of storage to be shown to host computer；
Host computer is configured, host computer is made to possess each link block diagram of drafting and each link parameter configuration function and record wave energy, parameter configuration at each link of algorithm block diagram possesses and fills in, send and query function, can guarantee that data is activation is successful and successfully modified, manually boot record ripple at any time, so that observation waveform situation and comparison effect simultaneously.
4. the method for claim 1, it is characterised in that according to current waveform, assessing the Harmonic Conditions of circulation, harmonic wave being down to minimum, as debugs optimization.
5. the method for claim 1, it is characterised in that described fiber optic communication is taken based on end-to-end Fibre Optical Communication Technology, selects according to data volume size and traffic rate；
Described end-to-end Fibre Optical Communication Technology refer to by two different entities between fiber optic applications layer connect One-to-one communication mode；
Described end-to-end Fibre Optical Communication Technology meets IEC60044-8 standard, fiber medium using physical layer, and traffic rate is 10Mbit/s；Link layer meets the FT3 form of IEC60870-5-1；Sender on the basis of low and high level, communication mode on the basis of rising trailing edge for the recipient.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108919100A (en) * | 2018-07-19 | 2018-11-30 | 珠海格力电器股份有限公司 | A kind of debugging system and method for frequency-changeable compressor driving |
| CN110929381A (en) * | 2019-10-25 | 2020-03-27 | 舞阳钢铁有限责任公司 | Parameter optimization method for direct current speed regulation device |
| CN111781440A (en) * | 2020-06-01 | 2020-10-16 | 广州大学 | Open type microcomputer relay protection experiment system and method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5862707A (en) * | 1981-10-09 | 1983-04-14 | Fanuc Ltd | Numerical control system |
| CN102185306A (en) * | 2011-03-16 | 2011-09-14 | 中国电力科学研究院 | Modularized multilevel flexible DC (direct current) transmission valve base control equipment |
| CN103036210A (en) * | 2012-12-12 | 2013-04-10 | 国网智能电网研究院 | Layering sectional type capacitive balance control method based on look-up table |
| CN103066805A (en) * | 2012-12-11 | 2013-04-24 | 国网智能电网研究院 | Capacitor voltage balance control method based on bundling type switching of multiple sub modules |
| CN103066567A (en) * | 2012-12-11 | 2013-04-24 | 国网智能电网研究院 | Hierarchical sectional capacity balance control method based on switching number |
| CN103078400A (en) * | 2012-12-11 | 2013-05-01 | 国网智能电网研究院 | Bridge arm collecting protection system suitable for high-capacity MMC (Multi Media Controller) flexible direct-current power transmission system |
| CN103078480A (en) * | 2013-01-27 | 2013-05-01 | 中国科学院电工研究所 | Circulation control method of modular multilevel converter |
| CN103123482A (en) * | 2012-12-12 | 2013-05-29 | 国网智能电网研究院 | Valve monitoring device applicable to high-capacity multi-media card (MMC) flexible direct-current transmission converter |
-
2015
- 2015-08-26 CN CN201510530373.4A patent/CN106483841B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5862707A (en) * | 1981-10-09 | 1983-04-14 | Fanuc Ltd | Numerical control system |
| CN102185306A (en) * | 2011-03-16 | 2011-09-14 | 中国电力科学研究院 | Modularized multilevel flexible DC (direct current) transmission valve base control equipment |
| CN103066805A (en) * | 2012-12-11 | 2013-04-24 | 国网智能电网研究院 | Capacitor voltage balance control method based on bundling type switching of multiple sub modules |
| CN103066567A (en) * | 2012-12-11 | 2013-04-24 | 国网智能电网研究院 | Hierarchical sectional capacity balance control method based on switching number |
| CN103078400A (en) * | 2012-12-11 | 2013-05-01 | 国网智能电网研究院 | Bridge arm collecting protection system suitable for high-capacity MMC (Multi Media Controller) flexible direct-current power transmission system |
| CN103036210A (en) * | 2012-12-12 | 2013-04-10 | 国网智能电网研究院 | Layering sectional type capacitive balance control method based on look-up table |
| CN103123482A (en) * | 2012-12-12 | 2013-05-29 | 国网智能电网研究院 | Valve monitoring device applicable to high-capacity multi-media card (MMC) flexible direct-current transmission converter |
| CN103078480A (en) * | 2013-01-27 | 2013-05-01 | 中国科学院电工研究所 | Circulation control method of modular multilevel converter |
Non-Patent Citations (2)
| Title |
|---|
| 蔡新红 等: "基于离散模型的MMC环流抑制控制器的设计", 《石河子大学学报：自然科学版》 * |
| 辛业春 等: "基于桥臂电流直接控制的模块化多电平换流器控制策略", 《电力自动化设备》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108919100A (en) * | 2018-07-19 | 2018-11-30 | 珠海格力电器股份有限公司 | A kind of debugging system and method for frequency-changeable compressor driving |
| CN110929381A (en) * | 2019-10-25 | 2020-03-27 | 舞阳钢铁有限责任公司 | Parameter optimization method for direct current speed regulation device |
| CN110929381B (en) * | 2019-10-25 | 2023-06-23 | 舞阳钢铁有限责任公司 | Parameter optimization method for direct current speed regulating device |
| CN111781440A (en) * | 2020-06-01 | 2020-10-16 | 广州大学 | Open type microcomputer relay protection experiment system and method |
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