CN103760779A - Direct-driven wind generating set dynamic simulation system - Google Patents
Direct-driven wind generating set dynamic simulation system Download PDFInfo
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- CN103760779A CN103760779A CN201410034421.6A CN201410034421A CN103760779A CN 103760779 A CN103760779 A CN 103760779A CN 201410034421 A CN201410034421 A CN 201410034421A CN 103760779 A CN103760779 A CN 103760779A
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Abstract
The invention relates to a direct-driven wind generating set dynamic simulation system. The system comprises a wind speed simulation module, a transmission system simulation module, a direct-driven synchronous generator simulation module and a control system simulation module, wherein the wind speed simulation module, the transmission system simulation module and the direct-driven synchronous generator simulation module are connected in sequence, the direct-driven synchronous generator simulation module is connected with a converter, and the converter is connected with the control system simulation module and a grid. The system has the advantages that model requirements of access of large-scale wind power plants and impact loads such as electrified railways to grids are met, and an effective tool is provided for grid simulation of the type of loads; the operation characteristics of an electric system in a complicated electric network environment are analyzed through simulation, the power supply quality of the grid is improved, operation reliability of the grid is improved, and a reference is provided.
Description
Technical field
The present invention relates to a kind of Dynamic Simulation system, especially relate to a kind of direct wind-driven generator group Dynamic Simulation system.
Background technology
Direct driving speed-changing constant frequency wind generator system based on magneto alternator (PMSG) has higher advantage at aspects such as performance, reliability, cost and low voltage crossings, thereby the new forms of energy access electrical networks such as the Large Scale Wind Farm Integration forming have thus been introduced undulatory property power supply and the load that contains a large amount of power electronic equipments to electrical network.And when near while having the access of the such impact load of electric railway, it is more complicated that situation becomes.And general conventional model is not enough to the dynamic behaviour of meticulous Simulation of Complex load environment leeward group of motors, lack the effective tool that affects the electrical network quality of power supply under further investigation modern power network environment.
Summary of the invention
The present invention solves the existing technical matters of prior art; Provide a kind of model requirements that has solved large-scale wind power field and be similar to this impact load access of electric railway electrical network, for the grid simulation solving with this type load provides effective tool.By the operation characteristic of electric system under analogue simulation Analysis of Complex electric network environment, improve grid supply quality, strengthen the operational reliability of electrical network, a kind of direct wind-driven generator group Dynamic Simulation system of reference frame is provided.
Above-mentioned technical matters of the present invention is mainly solved by following technical proposals:
A direct wind-driven generator group Dynamic Simulation system, is characterized in that, comprising:
One wind speed simulation module: enough become to simulate basic wind, fitful wind, gradual change wind, noise wind according to four component methods; Wind speed simulation module is the wind speed simulation module of the natural wind simulating that forms according to four component methods, comprises four components, is respectively the simulation that basic wind, fitful wind, gradual change wind noise wind are realized wind speed, can input historical data and simulate actual wind regime simultaneously
One kinematic train analog module: consider that propeller pitch angle regulates; Described kinematic train analog module forms kinematic train part according to two of main flow piece analog modules, realizes the input of machine torque;
Drive synchronous generator simulation module: the AC-DC-AC converter of the two PWM of rotor-side and net side always; Realize mechanical output to the conversion of electromagnetic power;
One Control system simulation module: can control straight drive blower pitch angle and turn from side electric current net side power factor and DC bus-bar voltage; Control system simulation module is by rotor flux vector line voltage directional vector control strategy, realizes the constant of the stable output of power and power factor; Straight drive blower sends meets the electric energy that electrical network requires and is input on electrical network.
Described wind speed simulation module, kinematic train analog module, directly drive synchronous generator simulation module and connect successively; The described synchronous generator simulation module of directly driving is connected with current transformer, described current transformer connection control system analog module; Described current transformer is connected with electrical network.
In above-mentioned a kind of direct wind-driven generator group Dynamic Simulation system, the specific works step of described wind speed simulation module is as follows:
(MM5 is the nonlinearities change partial differential equations based on weather motion change to utilize the 5th generation mesoscale model MM5 Professional Meteorological numerical analysis method, process large density data, carry out complex calculations), according to wind energy turbine set, set up the weather observation data data a little obtained to calculate the air speed data of prediction assembling point.Self-defined dynamic linked library modular, embeds realistic model.Read predicted data input, adopt four component methods, wind speed is decomposed into basic wind v
m, fitful wind v
g, gradual change wind v
rwith RANDOM WIND v
n, act on the wind speed v on wind energy conversion system
wfor the stack of above 4 components, offer direct wind-driven generator group Dynamic Simulation module and use.
In above-mentioned a kind of direct wind-driven generator group Dynamic Simulation system, the specific works step of described kinematic train analog module is as follows: the rotor of direct wind-driven generator group adopts magneto structure, wind energy conversion system and magneto alternator are direct-coupling by axle, usage ratio link is described fan shaft power to the transitive relation of generator shaft power, be beneficial to two-dimensional interpolation table and add PI and control structure wind speed, generating unit speed to the control of propeller pitch angle, realize best wind power and obtain function.
In above-mentioned a kind of direct wind-driven generator group Dynamic Simulation system, described specific works step of directly driving synchronous generator simulation module is as follows: direct wind-driven generator group adopts permagnetic synchronous motor, do not need electric power excitation, stator winding cutting is fixed on the magnetic field that epitrochanterian permanent magnet forms, the induction electromotive force being directly proportional to rotational speed by electromagnetic induction effect generation, in closed-loop path, form induction current, realize the conversion from mechanical output to electric power.
In above-mentioned a kind of direct wind-driven generator group Dynamic Simulation system, the specific works step of described Control system simulation module is as follows: control system comprises that comprehensive coordination is controlled, pitch angle is controlled, current transformer is controlled, wherein:
Comprehensive coordination is controlled according to man-machine interaction and is set voluntarily the command signal that generates subsystems.
Pitch angle is controlled: utilize the experiment of model blower fan to obtain under different blower fan pitch angles, the relation of wind speed, generating unit speed and output power, structure two-dimensional interpolation table; Control system module utilizes this bivariate table to determine maximum mechanical output output according to wind speed, and determine suitable output current and voltage according to maximum DC voltage and DC current export-restriction, from the DC voltage of output, determine generating unit speed, then by PI, control the joint of realizing pitch angle and generating unit speed and adjust.
Current transformer is controlled and is comprised DC control link, idle controlling unit and inversion execution link, the command voltage that DC control link is controlled for tracking, coordinating, and stable DC side bus voltage, and generate active current command signal.Idle controlling unit gathers grid ac voltage, follows the tracks of the idle command signal that comprehensive coordination is controlled, the command signal of output reactive current.Active current instruction and the idle controlling unit referenced reactive current signal of the comprehensive direct current tracking link of link carried out in inversion, generates current on line side signal, by inverter, exports corresponding active power and reactive power.
Therefore, tool of the present invention has the following advantages: solved large-scale wind power field and be similar to the model requirements that this impact load of electric railway accesses electrical network, for the grid simulation solving with this type load provides effective tool.By the operation characteristic of electric system under analogue simulation Analysis of Complex electric network environment, improve grid supply quality, strengthen the operational reliability of electrical network, reference frame is provided.
Accompanying drawing explanation
Accompanying drawing 1 is system architecture principle schematic of the present invention.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment:
The invention reside in that to overcome conventional software not accurate enough to the simulation of directly driven wind-powered unit, phenomenon is clear not, from aerogenerator principle, sets up the directly driven wind-powered unit realistic model of general PSCAD/EMTDC platform:
(1), according to the wind speed in four component Fa Lai simulating natures circle, method simple practical is repeatable strong, and can input the accuracy that historical record wind speed carrys out testing model.
(2) set up multimass piece and kinematic train model, according to the maximum following principle of wind energy, set up the straight drive blower model matching with actual blower fan model.
(3) set up the straight drive blower current transformer of the formula back-to-back model of handing over the two PWM of orthogonal, make the output speed of straight drive blower follow the variation of reference rotation velocity and change, by flat-out PWM current transformer, control rotating speed and the power stage of generator.
(4) set up straight drive blower net side and rotor-side control system model.Rotor-side generates the control signal of rotor-side converter by rotor flux linkage orientation vector control strategy, control active power and reactive power output; Net side converter carrys out stable DC busbar voltage by line voltage directional vector control strategy, and holding power factor is constant.
Model is used international electromagnetic transient simulation software PSCAD/EMTDC to build, the form that is packaged into custom block offers final user, can be used for the simulation study that influences each other to wind energy turbine set and electric railway under the emulation of large-scale wind power field access electric system and complex electric network condition, for improving the power supply reliability of electrical network, provide reference basis for design.
Below a specific embodiment in conjunction with said system structure:
In conjunction with upper Fig. 1, set forth the 26S Proteasome Structure and Function of model: 1.1 wind speed models are according to the wind speed model of the natural wind simulating of four component methods formations, comprise four components, be respectively the simulation that basic wind, fitful wind, gradual change wind noise wind are realized wind speed, can input historical data and simulate actual wind regime simultaneously; 1.2 kinematic train models form kinematic train part according to two of main flow block models, realize the input of machine torque; 1.3 magneto alternator modules realize mechanical output and realize electric energy rectification and inversion is grid-connected into standard compliant electric energy to change 1.4 rotor-side and the net side converter of electromagnetic power; 1.5 control system models are by rotor flux vector line voltage directional vector control strategy, realize the constant of the stable output of power and power factor; Straight drive blower sends meets the electric energy that electrical network requires and is input on model 1.6 electrical networks.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (5)
1. a direct wind-driven generator group Dynamic Simulation module, is characterized in that, comprising:
One wind speed simulation module: enough become to simulate basic wind, fitful wind, gradual change wind, noise wind according to four component methods; Wind speed simulation module is the wind speed simulation module of the natural wind simulating that forms according to four component methods, comprises four components, is respectively the simulation that basic wind, fitful wind, gradual change wind noise wind are realized wind speed, can input historical data and simulate actual wind regime simultaneously
One kinematic train analog module: consider that propeller pitch angle regulates; Described kinematic train analog module forms kinematic train part according to two of main flow piece analog modules, realizes the input of machine torque;
Drive synchronous generator simulation module: the AC-DC-AC converter of the two PWM of rotor-side and net side always; Realize mechanical output to the conversion of electromagnetic power;
One Control system simulation module: can control straight drive blower pitch angle and turn from side electric current net side power factor and DC bus-bar voltage; Control system simulation module is by rotor flux vector line voltage directional vector control strategy, realizes the constant of the stable output of power and power factor; Straight drive blower sends meets the electric energy that electrical network requires and is input on electrical network;
Described wind speed simulation module, kinematic train analog module, directly drive synchronous generator simulation module and connect successively; The described synchronous generator simulation module of directly driving is connected with current transformer, described current transformer connection control system analog module; Described current transformer is connected with electrical network.
2. a kind of direct wind-driven generator group Dynamic Simulation module according to claim 1, it is characterized in that, the specific works step of described wind speed simulation module is as follows: yardstick pattern MM5 Professional Meteorological numerical analysis method, according to wind energy turbine set, set up the weather observation data data of a little obtaining to calculate the air speed data of prediction assembling point, self-defined dynamic linked library modular, embeds realistic model, reads predicted data input, adopt four component methods, wind speed is decomposed into basic wind v
m, fitful wind v
g, gradual change wind v
rwith RANDOM WIND v
n, act on the wind speed v on wind energy conversion system
wfor the stack of above 4 components, offer direct wind-driven generator group Dynamic Simulation module and use.
3. a kind of direct wind-driven generator group Dynamic Simulation module according to claim 1, it is characterized in that, the specific works step of described kinematic train analog module is as follows: the rotor of direct wind-driven generator group adopts magneto structure, wind energy conversion system and magneto alternator are direct-coupling by axle, usage ratio link is described fan shaft power to the transitive relation of generator shaft power, be beneficial to two-dimensional interpolation table and add PI and control structure wind speed, generating unit speed to the control of propeller pitch angle, realize best wind power and obtain function.
4. a kind of direct wind-driven generator group Dynamic Simulation module according to claim 1, it is characterized in that, described specific works step of directly driving synchronous generator simulation module is as follows: direct wind-driven generator group adopts permagnetic synchronous motor, do not need electric power excitation, stator winding cutting is fixed on the magnetic field that epitrochanterian permanent magnet forms, the induction electromotive force being directly proportional to rotational speed by electromagnetic induction effect generation, in closed-loop path, form induction current, realize the conversion from mechanical output to electric power.
5. a kind of direct wind-driven generator group Dynamic Simulation module according to claim 1, is characterized in that, the specific works step of described Control system simulation module is as follows: control system comprises that comprehensive coordination is controlled, pitch angle is controlled, current transformer is controlled; Wherein:
Comprehensive coordination is controlled according to man-machine interaction and is set voluntarily the command signal that generates subsystems;
Pitch angle is controlled: utilize the experiment of model blower fan to obtain under different blower fan pitch angles, the relation of wind speed, generating unit speed and output power, structure two-dimensional interpolation table; Control system module utilizes this bivariate table to determine maximum mechanical output output according to wind speed, and determine suitable output current and voltage according to maximum DC voltage and DC current export-restriction, from the DC voltage of output, determine generating unit speed, then by PI, control the joint of realizing pitch angle and generating unit speed and adjust;
Current transformer is controlled and is comprised DC control link, link is carried out in idle controlling unit and inversion, the command voltage that DC control link is controlled for tracking, coordinating, stable DC side bus voltage, and generate active current command signal, idle controlling unit gathers grid ac voltage, follow the tracks of the idle command signal that comprehensive coordination is controlled, the command signal of output reactive current, active current instruction and the idle controlling unit referenced reactive current signal of the comprehensive direct current tracking link of link carried out in inversion, generate current on line side signal, by inverter, export corresponding active power and reactive power.
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| CN112910006A (en) * | 2021-03-19 | 2021-06-04 | 哈尔滨工业大学 | Universal electromagnetic transient modeling method for direct-drive wind turbine generator |
| CN113922382A (en) * | 2021-09-30 | 2022-01-11 | 广东电网有限责任公司 | Voltage regulation and control method, device and equipment for user-side adjustable energy storage and storage medium |
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| CN104201716A (en) * | 2014-08-24 | 2014-12-10 | 国家电网公司 | Electro-mechanical transient simplified model building method based on controlled current source |
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| CN110165703A (en) * | 2019-05-29 | 2019-08-23 | 国网内蒙古东部电力有限公司 | A kind of initial method and system of permanent magnetism direct drive wind machine electromagnetic transient simulation |
| CN110165703B (en) * | 2019-05-29 | 2020-09-29 | 国网内蒙古东部电力有限公司 | Initialization method and system for electromagnetic transient simulation of permanent magnet direct drive fan |
| CN110188466B (en) * | 2019-05-30 | 2020-09-29 | 国网内蒙古东部电力有限公司 | Initialization method and system for electromagnetic transient simulation of doubly-fed wind turbine |
| CN110188466A (en) * | 2019-05-30 | 2019-08-30 | 国网内蒙古东部电力有限公司 | A kind of initial method and system of double-fed blower electromagnetic transient simulation |
| CN111769594A (en) * | 2020-06-19 | 2020-10-13 | 上海交通大学 | Full-power wind turbine generator wind power plant simulation system, simulation method and equipment |
| CN112910006A (en) * | 2021-03-19 | 2021-06-04 | 哈尔滨工业大学 | Universal electromagnetic transient modeling method for direct-drive wind turbine generator |
| CN112910006B (en) * | 2021-03-19 | 2022-12-09 | 哈尔滨工业大学 | Universal electromagnetic transient modeling method for direct-drive wind turbine generator |
| CN113922382A (en) * | 2021-09-30 | 2022-01-11 | 广东电网有限责任公司 | Voltage regulation and control method, device and equipment for user-side adjustable energy storage and storage medium |
| CN114611402A (en) * | 2022-03-18 | 2022-06-10 | 四川大学 | Direct-drive fan dynamic fitting method based on block interconnection model and data driving |
| CN115632433A (en) * | 2022-10-19 | 2023-01-20 | 中国华能集团清洁能源技术研究院有限公司 | Wind-machine-field-network panoramic united simulation system and method |
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