CN101753086B - Fault traversing performance analog system of double-fed wind driven generator - Google Patents
Fault traversing performance analog system of double-fed wind driven generator Download PDFInfo
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- CN101753086B CN101753086B CN 201010044820 CN201010044820A CN101753086B CN 101753086 B CN101753086 B CN 101753086B CN 201010044820 CN201010044820 CN 201010044820 CN 201010044820 A CN201010044820 A CN 201010044820A CN 101753086 B CN101753086 B CN 101753086B
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Abstract
The invention discloses a fault traversing performance analog system of a double-fed wind driven generator, comprising a motor system, an imitator main circuit, a DSP control system and an upper computer monitoring system based on Labview software. The motor system comprises a direct-current motor and a double-fed motor coaxially connected with each other; the imitator main circuit comprises a frequency converter, a direct-current speed regulator, a Crowbar circuit and a voltage spiller module, wherein a voltage spilling generator is connected between the power source and the double-fed motor; the frequency converter is connected between an output end of the voltage spiller and a rotor of the double-fed motor; the direct-current speed regulator is connected between the input end of the voltage spiller and the direct-current motor; and the Crowbar is connected at the rotor side of the double-fed motor. The system has complete analog function of the fan operational characteristic during a fault of power grid, provides perfect test platform for the research of the double-fed motor and can be used for researching the performances of low-voltage traversing, support to weak grid, and the like.
Description
Technical field
The present invention relates to a kind of analogue system of double-fed wind power generator performance study, particularly a kind of fault traversing performance analog system of studying double-fed wind power generator.
Background technology
The field experiment that generator and wind energy conversion system directly link to each other is not only uneconomical, also can be subjected to the restriction of natural conditions.The laboratory simulation scheme of therefore existing more wind energy conversion system and generator is suggested, to shorten the search time of wind-driven generator control performance.Existing double-fed wind power generator analogue technique has realized not possessing the laboratory simulation of the double-fed fan characteristic of wind field environment, comprise double feedback electric engine that the simulation of wind field wind speed simulation, feature of wind machine, double-PWM frequency converter the drive simulated behavior etc. that is incorporated into the power networks, but also do not possess the double-fed wind power generator dynamic property analog functuion under electric network fault (voltage falls and the is uneven) situation.Growth at full speed along with the wind-electricity integration capacity, wind-driven generator is not as possessing fault ride-through capacity, will certainly influence the safe and stable operation of electrical network, the experimental simulation of fan operation performance during therefore to grid disturbance passes through algorithm important meaning is arranged studying its fault.
Summary of the invention
The object of the present invention is to provide a kind of analogue system of fan operation characteristic when being applicable to grid disturbance, for the fault ride-through capacity of research double-fed wind power generator provides perfect experiment porch.
A kind of fault traversing performance analog system of double-fed wind power generator, its structural feature is: comprise electric system, the simulator main circuit, the DSP control system, ipc monitor system based on Labview software, described electric system comprises DC motor and the double feedback electric engine of coaxial connection, the simulator main circuit comprises frequency converter, DC speed regulator, Crowbar circuit and voltage fall each module of device, voltage falling generator is connected between power supply and the double feedback electric engine, frequency converter is connected to voltage and falls between device output and the double fed electric machine rotor, DC speed regulator is connected to voltage and falls between device input and the direct current machine, Crowbar is connected to the double fed electric machine rotor side, each module controls function of DSP control system control simulator main circuit, the ipc monitor system exports various instructions and gives the DSP control system.
The fault traversing performance analog system of double-fed wind power generator of the present invention, be integrated in the DSP control system by each functional control module with the simulator main circuit, export various instructions by the ipc monitor system and give the DSP control system, with realization each functional control module of simulator main circuit integrated in the DSP control system is moved by required mode, make them possess that double feedback electric engine may run in actual applications that grid disturbance one falls just like voltage and uneven, the functional module of anti-grid disturbance also is set in simulator main circuit functional module simultaneously, and make this system have fault ride-through capacity, thereby for research double-fed wind power generator fault ride-through capacity perfect experiment porch is provided.
Each module of described simulator main circuit integrates.
Each module is integrated, make hardware system obtain simplifying.
Described each module controls function of DSP control system control simulator main circuit is respectively: comprise the meritorious idle decoupling zero control of frequency converter, control is followed the tracks of in the torque that comprises DC speed regulator, the voltage drop-out time that comprises voltage falling generator comprises rotor short-circuit time of Crowbar circuit.
The various instructions of described ipc monitor system output comprise wind speed parameter, fan parameter, electric network fault, according to wind farm wind velocity simulation model, wind energy conversion system torque model and motor speed, propeller pitch angle calculate the blower fan torque, meritorious and reactive power is monitored to the output of wind-driven generator.
Described frequency converter for based on the IGBT device for to be connected back-to-back by the three-phase PWM translation circuit, the regulator generator rotating speed is incorporated into the power networks to realize maximal wind-energy tracking and variable speed constant frequency.
Described DC speed regulator is for constituting by three-phase diode bridge-type rectification circuit with based on the buck circuit of IGBT device, and the torque instruction simulation blower fan torque output according to host computer drives double feedback electric engine.
Described line voltage falls device and is made of series connection reactor, thyristor solid-state switch and adjustable resistance in parallel in the line, by antiparallel thyristor being triggered the time that control simulation line voltage falls, the degree of depth of falling by the value aanalogvoltage of regulating reactor and resistance.
Described Crowbar circuit is made of IGBT and the resistance of three-phase diode rectifier bridge and DC side, and whether the short circuit of control rotor circuit, prevents the rotor-side overtension when line voltage falls, thereby make the double feedback electric engine system possess fault ride-through capacity.
In sum, the present invention has following advantage compared to existing technology:
The analog functuion of fan operation characteristic when experimental simulation system of the present invention has complete electric network fault, for the research of double feedback electric engine provides perfect experiment porch, can be used for its low-voltage pass through, to the Performance Experiment such as support of light current net.Because each module main circuit integrates, hardware system is simplified, and can carry out centralized control, has reduced system cost, and good man computer interface is arranged.
Description of drawings
Fig. 1 is the fault traversing performance analog system schematic diagram of double-fed wind power generator of the present invention
Fig. 2 is the converter circuit figure of the embodiment of the invention
Fig. 3 is the DC speed regulator circuit diagram
Fig. 4 is the voltage falling generator circuit diagram
Fig. 5 is the Crowbar circuit diagram
Embodiment
Be described in more detail below in conjunction with the present invention of embodiment.
Embodiment 1
The fault traversing performance analog system schematic diagram of double-fed wind power generator as shown in Figure 1, experimental simulation system comprise electric system, simulator main circuit and DSP control system, ipc monitor system.Electric system comprises each one of the DC motor of coaxial connection and wire-wound asynchronous motor.The simulator main circuit structure is to be fallen the integrated platform that each module such as device constitutes by frequency converter, DC speed regulator, Crowbar circuit and voltage.Wherein voltage falling generator is connected between transformer and the double feedback electric engine, frequency converter is connected to voltage and falls between device output and the double fed electric machine rotor, DC speed regulator is connected to voltage to be fallen between device input and the direct current machine, and Crowbar is connected to the double fed electric machine rotor side.The structure of frequency converter such as Fig. 2, for two three-phase PWM translation circuits based on the IGBT device connect back-to-back, the regulator generator rotating speed is incorporated into the power networks to realize maximal wind-energy tracking and variable speed constant frequency; DC speed regulator such as Fig. 3 constitute by three-phase diode bridge-type rectification circuit with based on the buck circuit of IGBT device, and the torque instruction simulation blower fan torque output according to host computer drives double feedback electric engine; Line voltage falls device such as Fig. 4, constituted by series connection reactor, thyristor solid-state switch and adjustable resistance in parallel in the line, by antiparallel thyristor being triggered the time that control simulation line voltage falls, the degree of depth of falling by the value aanalogvoltage of regulating reactor and resistance; Crowbar circuit such as Fig. 5 are made of IGBT and the resistance of three-phase diode rectifier bridge and DC side, and whether the short circuit of control rotor circuit, prevents the rotor-side overtension when line voltage falls, thereby make the double feedback electric engine system possess fault ride-through capacity; The control function of each module of main circuit that the DSP control system is integrated comprises the meritorious idle decoupling zero control of frequency converter, the torque tracking control of DC speed regulator, the voltage drop-out time of voltage falling generator, the rotor short-circuit time of Crowbar circuit etc.; The ipc monitor system is based on Labview software, can realize settings such as wind speed parameter, fan parameter, electric network fault, calculate blower fan torque output order according to wind farm wind velocity simulation model, wind energy conversion system torque model and motor speed, propeller pitch angle and give the DSP control system, can monitor with reactive power the output of wind-driven generator is meritorious simultaneously.
It is same as the prior art that present embodiment is not stated part.
Claims (7)
1. the fault traversing performance analog system of a double-fed wind power generator, it is characterized in that: comprise electric system, the simulator main circuit, the DSP control system, ipc monitor system based on Labview software, described electric system comprises DC motor and the double feedback electric engine of coaxial connection, the simulator main circuit comprises frequency converter, DC speed regulator, Crowbar circuit and voltage fall each module of device, voltage falls device and is connected between power supply and the double feedback electric engine, frequency converter is connected to voltage and falls between device output and the double fed electric machine rotor, DC speed regulator is connected to voltage and falls between device input and the DC motor, Crowbar is connected to the double fed electric machine rotor side, each module controls function of DSP control system control simulator main circuit, the ipc monitor system exports various instructions and gives the DSP control system.
2. the fault traversing performance analog system of double-fed wind power generator according to claim 1, it is characterized in that: each module of described simulator main circuit integrates.
3. the fault traversing performance analog system of double-fed wind power generator according to claim 2, it is characterized in that: described each module controls function of DSP control system control simulator main circuit is respectively: comprise the meritorious idle decoupling zero control of frequency converter, control is followed the tracks of in the torque that comprises DC speed regulator, comprise that voltage falls the voltage drop-out time of device, comprises the rotor short-circuit time of Crowbar circuit.
4. the fault traversing performance analog system of double-fed wind power generator according to claim 3, it is characterized in that: the structure of described frequency converter is to be formed by connecting back-to-back by two three-phase PWM translation circuits based on the IGBT device, and frequency converter regulator generator rotating speed is incorporated into the power networks to realize maximal wind-energy tracking and variable speed constant frequency.
5. the fault traversing performance analog system of double-fed wind power generator according to claim 4, it is characterized in that: described DC speed regulator is for constituting by three-phase diode bridge-type rectification circuit with based on the buck circuit of IGBT device, torque instruction simulation blower fan torque output according to the ipc monitor system drives double feedback electric engine.
6. the fault traversing performance analog system of double-fed wind power generator according to claim 5, it is characterized in that: described voltage falls device and is made of series connection reactor, thyristor solid-state switch and adjustable resistance in parallel in the line, by antiparallel thyristor being triggered the time that control simulation line voltage falls, the degree of depth of falling by the value aanalogvoltage of regulating reactor and resistance.
7. the fault traversing performance analog system of double-fed wind power generator according to claim 6, it is characterized in that: described Crowbar circuit is made of IGBT and the resistance of three-phase diode rectifier bridge and DC side, whether the short circuit of control rotor circuit, prevent the rotor-side overtension when line voltage falls, thereby make the double feedback electric engine system possess fault ride-through capacity.
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| CN 201010044820 CN101753086B (en) | 2010-01-12 | 2010-01-12 | Fault traversing performance analog system of double-fed wind driven generator |
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| CN101893891B (en) * | 2010-07-27 | 2012-08-08 | 上海卡鲁自动化科技有限公司 | Laboratory test system and method of wind driven generator control system |
| CN101937483B (en) * | 2010-09-09 | 2012-06-06 | 哈尔滨工业大学 | Dynamic equivalence modeling method for double-fed set wind power station based on action condition of pitch angle |
| CN102005779B (en) * | 2010-11-17 | 2012-11-21 | 浙江运达风电股份有限公司 | Converter-based low voltage ride through control system of wind generating set |
| CN102064714B (en) * | 2010-12-02 | 2013-04-10 | 永济新时速电机电器有限责任公司 | Doubly-fed wind power frequency converter |
| CN102353863B (en) * | 2011-09-02 | 2013-08-14 | 中国科学院电工研究所 | Renewable energy source power generation synchronization test platform |
| CN102299526A (en) * | 2011-09-09 | 2011-12-28 | 南车株洲电力机车研究所有限公司 | Low voltage ride through (LVRT) control method and system device for doubly-fed wind generating set |
| CN102354125B (en) * | 2011-10-11 | 2013-05-01 | 国电联合动力技术有限公司 | Comprehensive simulation system for low-voltage passing of wind turbine and method |
| CN103208960A (en) | 2012-01-16 | 2013-07-17 | 台达电子企业管理（上海）有限公司 | Excitation control circuit and electric excitation wind power system thereof |
| CN103378783A (en) | 2012-04-16 | 2013-10-30 | 台达电子企业管理（上海）有限公司 | Excitation control circuit, excitation control method, and electrical excitation wind power system of excitation control circuit |
| CN102680895B (en) * | 2012-05-30 | 2015-02-18 | 合肥工业大学 | Simulation method of wind power generation simulation platform |
| CN102819221B (en) * | 2012-08-08 | 2016-05-25 | 中国电力科学研究院 | LVRT Capability of Wind Turbine Generator characteristic associative simulation model and joint simulation method thereof |
| CN103138289B (en) * | 2012-11-08 | 2015-05-13 | 中国电力科学研究院 | Real-time digital simulation modeling method of high permeability wind power plant |
| CN104298121B (en) * | 2013-07-15 | 2017-08-29 | 哈尔滨工业大学（威海） | The dual feedback wind power generation system simulation experiment platform of Control-oriented technical research |
| CN103986166B (en) * | 2014-05-30 | 2016-08-24 | 哈尔滨工业大学 | It is suitable for wind farm voltage failure protection device and the method for wide power factor scope |
| CN104459540B (en) * | 2014-12-15 | 2017-02-22 | 云南电网有限责任公司电网规划研究中心 | Power-grid-impact-free detection method for low voltage ride through function of doubly-fed wind turbine generator system |
| CN105319465A (en) * | 2015-10-21 | 2016-02-10 | 清华大学 | Power grid voltage fault simulation device |
| CN105356504B (en) * | 2015-11-19 | 2017-12-08 | 上海电机学院 | A kind of current transformer and its control method and wind generator system |
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