CN106777596A - Micro-capacitance sensor semi-matter simulating system and wind-driven generator closed loop control method - Google Patents
Micro-capacitance sensor semi-matter simulating system and wind-driven generator closed loop control method Download PDFInfo
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- CN106777596A CN106777596A CN201611092502.7A CN201611092502A CN106777596A CN 106777596 A CN106777596 A CN 106777596A CN 201611092502 A CN201611092502 A CN 201611092502A CN 106777596 A CN106777596 A CN 106777596A
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- G—PHYSICS
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- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The embodiment of the invention discloses a kind of micro-capacitance sensor semi-matter simulating system and wind-driven generator closed loop control method, including for the |input paramete for simulating the wind-driven generator for obtaining to be sent to the |input paramete control module of wind-driven generator emulation module, the wind-driven generator emulation module for carrying out simulation run according to the |input paramete for receiving, and for controlling wind-driven generator emulation module to access the grid-connected module of micro-capacitance sensor simulation source and local power grid.The present invention reduces the error produced in simulation process closer to the wind power generation semi-physical simulation system of actual conditions, and can simulate changeable wind environment, while increased the accuracy of analogue system.
Description
Technical field
The present invention relates to wind generator system emulation field, and in particular to a kind of micro-capacitance sensor semi-matter simulating system and wind-force
Generator closed loop control method.
Background technology
Experiment method for wind power system mainly includes three kinds：Software simulated experiment, field experiment and HWIL simulation
Experiment.Field experiment is a kind of condition that can most reflect real working condition, and the data of acquisition are true and reliable, but implementation cost is high, difficulty
Degree is big, in not being suitable for the scientific research of wind power system.It is thus many to be simulated using software or software and half mould for combining in kind
Plan mode.
Complete wind-powered electricity generation simulation system includes real-time simulation part, electromechanical phantom element and the corresponding mould of wind-driven generator
Intend strategy.In known techniques such as current wind power system emulation platform, the method for being modeled using simulation softward more carries out wind turbine
Group test.Herein in basis, wind speed modeling is carried out according to autoregression model, the mathematics of wind-driven generator is set up using curve matching
Model.
Currently for the grid-connected emulation mode of wind-driven generator generally using simulation softward to wind-driven generator, power train
The parts such as system, generator and load are modeled respectively, and the parameter of Wind turbines is derived from by ideal model, it is impossible to complete
It is consistent with the state under actual wind environment entirely.Further, since wind turbine transmission system is simulated using software, it is impossible to accurately reflect
Can there is deviation with truth in the numerical value such as the presence of the influence factors such as coefficient of friction, inertia, generator actual power, torque；
And implementation cost is high, difficulty big, further, since external environment is unstable, easily causes security risk.Therefore, field experiment
In not being suitable for the scientific research of wind power system.
The content of the invention
For defect of the prior art, the present invention provides a kind of micro-capacitance sensor semi-matter simulating system and wind-driven generator is closed
Ring control method, closer to the wind power generation semi-physical simulation system of actual conditions, reduces the error produced in simulation process, and
Changeable wind environment can be simulated, while increased the accuracy of analogue system.
In order to solve the above technical problems, the present invention provides following technical scheme：
On the one hand, the invention provides a kind of micro-capacitance sensor semi-matter simulating system, including：The |input paramete control being sequentially connected
Molding block, wind-driven generator emulation module and grid-connected module；
The |input paramete control module, for the |input paramete for simulating the wind-driven generator for obtaining to be sent to the wind
Power generator emulation module；
The wind-driven generator emulation module, for carrying out simulation run according to the |input paramete for receiving；
The grid-connected module, for controlling the wind-driven generator emulation module to access micro-capacitance sensor simulation source and local electricity
Net.
Further, the |input paramete control module includes：Wind-driven generator real time simulator, DC motor controller
And power supply；
The wind-driven generator real time simulator is used for the output parameter according to wind electricity motivation, is closed using wind-driven generator
Ring control method obtains the |input paramete of the wind-driven generator, and the |input paramete is sent to DC motor controller；
The DC motor controller controls the wind-driven generator emulation module to be emulated according to the |input paramete
Operation；
The power supply connects the wind-driven generator real time simulator and DC motor controller respectively；
Wherein, the output parameter includes different wind environments, the output torque of wind electricity motivation and rotating speed；It is described defeated
Entering parameter includes armature supply and rotating speed.
Further, the wind-driven generator emulation module includes：Dc motor, transmission mechanism and the hair being sequentially connected
Motor；
The dc motor is communicated to connect with the DC motor controller, and is sent out according to the DC motor controller
The |input paramete sent simulates the operation of the wind electricity motivation so that the power output and output torque of the dc motor with
The wind electricity motivation is identical；
The both sides of the transmission mechanism connect the turning end of the dc motor and generator respectively；
The generator produces what amplitude and frequency changed according to the synchronous operation of the transmission mechanism and dc motor
Alternating current, and the alternating current transmission that the amplitude and frequency are changed is to the grid-connected module.
Further, the dc motor is provided with velocity sensor, and the velocity sensor and the direct current
Machine controller is communicated to connect, and dc motor speed operationally and acceleration are sent to the DC MOTOR CONTROL
Device.
Further, the transmission mechanism is gear-box, and the action that the gear-box produces the dc motor
Pass to the turning end of the generator.
Further, the grid-connected module includes：It is respectively connecting to inverter, micro-capacitance sensor real time simulator, the hair of power network
Electric machine controller and the anti-island loads of RLC；
One end of the inverter is connected with the output end of generator, and the other end connects the micro-capacitance sensor real-time Simulation respectively
Device, and the alternating current that the inverter changes the amplitude of reception and frequency is converted to direct current energy by converter system, then will
The direct current energy is converted to the sine-wave current with local power grid same frequency and same-phase, and is input into local power grid；
The engine controller is communicated to connect with the generator；
The micro-capacitance sensor real time simulator is used to set power network running parameter；
The island mode of the anti-island loads of RLC is the pattern that actively anti-isolated island and passive anti-isolated island are combined；
Wherein, the power network running parameter includes：Frequency drift and voltage jump parameter.
Further, the dc motor is brshless DC motor BLDCM.
On the other hand, the invention provides a kind of wind-driven generator closed loop control method based on described system, including：
Wind-driven generator real time simulator described in step 1. obtains the rotating speed of dc motor according to the velocity sensor
And default gear shift ratio, determine the rotating speed of the wind-driven generator；
Wind-driven generator described in step 2. is calculated the wind according to the rotating speed and default wind speed of the wind-driven generator
The pneumatic torque of power generator；
Wind-driven generator real time simulator described in step 3. sends to described straight the pneumatic torque of the wind-driven generator
Stream electric machine controller.
Further, methods described also includes：
DC motor controller described in step 4. adjusts dc motor according to the pneumatic torque of the wind-driven generator
Armature voltage so that the output torque of the wind-driven generator emulation module is identical with the pneumatic torque of wind-driven generator.
Further, also include before the step 1：
Step 0. determines the wind-driven generator according to the counter electromotive force of the dc motor, phase current and rotating speed
Electromagnetic torque value of feedback；
Wherein, the phase current is obtained according to the phase current sensor being arranged on the dc motor with speed probe
Take, the counter electromotive force is obtained according to the synovial membrane observer being arranged on the dc motor.
As shown from the above technical solution, a kind of micro-capacitance sensor semi-matter simulating system of the present invention, including for by mould
The |input paramete of the wind-driven generator that plan is obtained is sent to the |input paramete control module of wind-driven generator emulation module, for root
The wind-driven generator emulation module of simulation run is carried out according to the |input paramete for receiving, and for controlling wind-driven generator to emulate mould
Block accesses the grid-connected module of micro-capacitance sensor simulation source and local power grid.The present invention is imitated closer to the wind power generation semi-physical of actual conditions
True system, reduces the error produced in simulation process, and can simulate changeable wind environment, while increased analogue system
Accuracy.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is a kind of a kind of structure of specific embodiment of the micro-capacitance sensor semi-matter simulating system in the embodiment of the present invention one
Schematic diagram；
Fig. 2 is a kind of structural representation of specific embodiment of |input paramete control module 10 in the embodiment of the present invention two；
Fig. 3 is a kind of structural representation of specific embodiment of wind-driven generator emulation module 20 in the embodiment of the present invention three
Figure；
Fig. 4 is a kind of structural representation of specific embodiment of grid-connected module 30 in the embodiment of the present invention four；
Fig. 5 is that a kind of flow of specific embodiment of the wind-driven generator closed loop control method in the embodiment of the present invention five is shown
It is intended to；
Fig. 6 is a kind of structural representation of the micro-capacitance sensor semi-matter simulating system in concrete application example of the present invention；
Fig. 7 is the motor torque T and pneumatic torque T relationship schematic diagram in concrete application example of the present invention；
Fig. 8 is simulated machine torque and pneumatic torque relation schematic diagram in concrete application example of the present invention.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, clear, complete description is carried out to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The embodiment of the present invention one provides a kind of a kind of specific embodiment of micro-capacitance sensor semi-matter simulating system.Referring to figure
1, the analogue system specifically includes following content：
|input paramete control module 10, wind-driven generator emulation module 20 and the grid-connected module 30 being sequentially connected.
The |input paramete control module 10, for the |input paramete for simulating the wind-driven generator 23 for obtaining to be sent to institute
State wind-driven generator emulation module 20.
In |input paramete control module 10, different wind environments, root are set with wind-driven generator real time simulator 11
According to the output torque and rotary speed property of wind-driven generator 23, using torque closed-loop simulation strategy, brushless direct current motor is controlled
21BLDCM exports identical with wind-driven generator 23.
The wind-driven generator emulation module 20, for carrying out simulation run according to the |input paramete for receiving.
In wind-driven generator emulation module 20, dc motor 21 drives generator 23, reproduction by transmission mechanism 22
The running status of Wind turbines in actual environment.
The grid-connected module 30, for controlling the wind-driven generator emulation module 20 to access micro-capacitance sensor simulation source and local
Power network.
In grid-connected module 30, grid-connected part uses virtual micro-capacitance sensor analogue system, by inverter 31 by wind-force
Generator connecting in parallel with system accesses micro-capacitance sensor simulation source, is then connected to local power grid, the stabilization of operation of the evaluation and test wind turbine in micro-capacitance sensor
Property.
Knowable to foregoing description, embodiments of the invention reduce the error produced in simulation process.It is adapted to simulation changeable
Wind environment, is a kind of efficiently feasible new technique scheme.
The embodiment of the present invention two provides a kind of specific embodiment party of |input paramete control module 10 in above-mentioned analogue system
Formula.Referring to Fig. 2, the |input paramete control module 10 specifically includes following content：
Wind-driven generator real time simulator 11, DC motor controller 12 and power supply 13.
The wind-driven generator real time simulator 11 is used for the output parameter according to wind electricity motivation, using wind-driven generator
Closed loop control method obtains the |input paramete of the wind-driven generator 23, and the |input paramete is sent to DC MOTOR CONTROL
Device 12.
The DC motor controller 12 is carried out according to the |input paramete control wind-driven generator emulation module 20
Simulation run.
The power supply 13 connects the wind-driven generator real time simulator 11 and DC motor controller 12 respectively；Its
In, the output parameter includes different wind environments, the output torque of wind electricity motivation and rotating speed；The |input paramete includes
Armature supply and rotating speed.
Knowable to foregoing description, embodiments of the invention are realized and set different using wind-driven generator real time simulator
Wind environment, according to the output torque and rotary speed property of wind-driven generator, using torque closed-loop simulation strategy, controls brushless direct-current
Motor BLDCM is identical with wind-driven generator output.
The embodiment of the present invention three provides a kind of specific implementation of wind-driven generator emulation module 20 in above-mentioned analogue system
Mode.Referring to Fig. 3, the wind-driven generator emulation module 20 specifically includes following content：
Dc motor 21, transmission mechanism 22 and the generator 23 being sequentially connected；
Dc motor 21 is provided with velocity sensor 24, and the velocity sensor 24 and the DC motor controller
12 communication connections, the speed operationally of the dc motor 21 and acceleration are sent to the DC motor controller
12, dc motor therein 21 is brshless DC motor BLDCM.
The dc motor 21 is communicated to connect with the DC motor controller 12, and according to the DC MOTOR CONTROL
The |input paramete that device 12 sends simulates the operation of the wind electricity motivation so that the power output of the dc motor 21 and defeated
Go out torque identical with the wind electricity motivation.
The both sides of the transmission mechanism 22 connect the turning end of the dc motor 21 and generator 23 respectively；And it is described
Transmission mechanism 22 is gear-box, and the action that the dc motor 21 is produced is passed to the generator 23 by the gear-box
Turning end.
The generator 23 produces amplitude and frequency according to the synchronous operation of the transmission mechanism 22 and dc motor 21
The alternating current of change, and the alternating current transmission that the amplitude and frequency are changed is to the grid-connected module 30.
Knowable to foregoing description, the brshless DC motor in embodiments of the invention has the advantages that easily controllable and wider
Variable speed constant frequency range of operation, be a kind of efficiently feasible new technique side using brshless DC motor wind-driven generator simulation
Case.
The embodiment of the present invention four provides a kind of specific embodiment of grid-connected module 30 in above-mentioned analogue system.Referring to figure
4, the grid-connected module 30 specifically includes following content：
It is respectively connecting to inverter 31, micro-capacitance sensor real time simulator 32, engine controller 33 and the anti-isolated islands of RLC of power network
Load 34.
One end of the inverter 31 is connected with the output end of generator 23, and it is real-time that the other end connects the micro-capacitance sensor respectively
Simulator 32, and the alternating current that the amplitude of reception and frequency change is converted to direct current by the inverter 31 by converter system
Can, then the direct current energy is converted into the sine-wave current with local power grid same frequency and same-phase, and it is input into local power grid.
The engine controller 33 is communicated to connect with the generator 23.
The micro-capacitance sensor real time simulator 32 is used to set power network running parameter.
The island mode of the anti-island loads 34 of RLC is the pattern that actively anti-isolated island and passive anti-isolated island are combined.Its
In, the power network running parameter includes：Frequency drift and voltage jump parameter.
Knowable to foregoing description, embodiments of the invention are no longer connected with single load, but by inverter and high-power
Micro-capacitance sensor real time simulator be incorporated into power network, using can be controlled load torque adjust, can not only complete most basic
Static characteristic is observed, it is also possible to realize the observation for wind power system dynamic variation characteristic.
The embodiment of the present invention five provides a kind of specific reality of wind-driven generator closed loop control method in above-mentioned analogue system
Apply mode.Referring to Fig. 5, the wind-driven generator closed loop control method specifically includes following content：
Step 000：Counter electromotive force, phase current and rotating speed according to the dc motor 21, determine the wind-power electricity generation
The electromagnetic torque value of feedback of machine 23.
In step 000, the phase current is according to the phase current sensor being arranged on the dc motor 21 and turns
Fast sensor is obtained, and the counter electromotive force is obtained according to the synovial membrane observer being arranged on the dc motor 21.
Step 100：The wind-driven generator real time simulator 11 obtains dc motor 21 according to the velocity sensor
Rotating speed and default gear shift ratio, determine the rotating speed of the wind-driven generator 23.
Step 200：The wind-driven generator 23 is calculated according to the rotating speed and default wind speed of the wind-driven generator 23
The pneumatic torque of the wind-driven generator 23.
Step 300：The wind-driven generator real time simulator 11 by the pneumatic torque of the wind-driven generator 23 send to
The DC motor controller 12.
Step 400：The DC motor controller 12 adjusts direct current according to the pneumatic torque of the wind-driven generator 23
The armature voltage of motivation 21 so that the output torque of the wind-driven generator emulation module 20 and pneumatic turn of wind-driven generator 23
Square is identical.
Knowable to foregoing description, embodiments of the invention use torque closed-loop simulation strategy so that brushless direct current motor
BLDCM is identical with wind-driven generator output.
It is further description this programme, the present invention also provides a kind of concrete application of micro-capacitance sensor semi-matter simulating system
Example, referring to Fig. 6, the concrete application example of the analogue system includes following content to the concrete structure of system：
Analogue system includes three parts：|input paramete control module, wind-driven generator emulation module and grid-connected module.Tool
The equipment of body has：The controller of wind-driven generator real time simulator, brshless DC motor BLDCM controllers and generator, big work(
Rate feedback type power network simulation source, wind turbine combining inverter, the anti-island loads of RLC.And it is the direct current generator of material object, transmission
Mechanism and generator.
Set different wind environments using wind-driven generator real time simulator, the output torque according to wind-driven generator with
Rotary speed property, using torque closed-loop simulation strategy, brushless direct current motor BLDCM is identical with wind-driven generator output for control.Directly
Stream motor drives generator by transmission mechanism, the running status of Wind turbines in reproduction actual environment.Grid-connected part makes
With virtual micro-capacitance sensor analogue system, by inverter by wind-driven generator grid integration micro-capacitance sensor simulation source, this is then connected to
Ground power network, the stability of operation of the evaluation and test wind turbine in micro-capacitance sensor.
Following technical scheme is taken further to realize：
Pass through cable connection between power supply and controller.Pass through cable connection between controller and controlled motor.Generator
Pass through cable connection between inverter.Pass through cable connection between generator and power network simulation source.Real-time simulation part and hair
Electric machine controller uses serial communication.Real-time simulation part uses CAN communication with DC motor controller.
Direct current generator BLDCM controllers can be imitative in real time using the frequency converter A CS800 of ABB AB with engine controller
True device can be using the core embedded controllers of PXIe-8133 tetra- of NI companies.
Micro-capacitance sensor real time simulator and wind turbine combining inverter can use Xi'an Actionpower Electrical Co., Ltd.
Product.The anti-island loads of RLC can be using the anti-isolated island devices of TC-3087 of Baoding Te Chuan Utilities Electric Co.s.
Wind-driven generator real time simulator is modeled using wind-driven generator aerodynamic model to wind-driven generator.Introduce blade tip speed
Than two amounts of λ and paddle pitch angle β, to calculate the power coefficient of wind-driven generator.Use power coefficient CpRepresent wind
The ratio between wind energy and the wind energy by wind turbine of power generator absorption.Wind energy and wind-force that pneumatic torque absorbs with wind-driven generator
Generator speed is relevant, and formula is：
In formula, R is the blade radius of wind-driven generator, and n is the rotating speed of wind-driven generator, and v is wind speed.Using curve matching
Method, set up Cp(λ, β) curve, you can learn the value of power coefficient.The kinetic energy that wind-driven generator absorbs is represented by：
Pw=0.5 ρ Stν3Cp；
S in formulatIt is wind-driven generator swept area, ρ is atmospheric density.Pneumatic torque can be calculated by equation below：
The operation that BLDCM dc motors pass through torque tracing simulation wind-driven generator, it is ensured that the output work of direct current generator
Rate and output torque are identical with wind-driven generator.The output torque and power output of direct current generator are represented by：
Described DC motor control device, using armature supply IaWith rotating speed n as two controlled quentity controlled variables.Implemented
Cheng Wei：Operating speed sensor, feedback obtains the rotating speed of motor, by motor speed and given gear shift ratio, obtains wind-force
The rotating speed of generator.Wind-force simulated conditions are set, wind speed, wind-driven generator parameter etc. is given, and then calculate tip speed ratio λ, root
Pneumatic torque is obtained according to the power coefficient of wind-driven generator.By adjusting armature voltage U, change armature supply, make direct current
The output torque T of motoreIt is identical with wind-driven generator pneumatic torque.
Described DC motor controller, the modulation of electromagnetic power is realized by modulation duty cycle.Because BLDCM is present
Commutation, thus have two and be conducted the form being conducted with three.Generally it is conducted using two.
Foregoing micro-capacitance sensor semi-matter simulating system, wherein, described wind turbine analog portion uses torque closed-loop control.
The premise for realizing torque closed-loop control is to need the accurate electromagnetic torque value of feedback for obtaining motor, and the electromagnetic torque of BLDCM passes through
Counter electromotive force, phase current and rotating speed are tried to achieve, and phase current is detected with rotating speed with corresponding sensor.
Described wind turbine analog portion, the acquisition of counter electromotive force is the key for calculating electromagnetic torque.The method of use is
Synovial membrane observer, synovial membrane observer has very strong resistance to the noise of system and disturbance, can more accurately acquire anti-electronic
Gesture.
Described transmission mechanism analog portion, during simulation static characteristic, calculating simulation motor and wind-driven generator friction etc.
Loss, using the coefficient of friction in the case of two kinds, is modified to original torque closed-loop simulation strategy.Referring to Fig. 7, motor torque
TeWith pneumatic torque TMRelation is：
Te=Tw'-(BW'-BM)ω
Wherein, TW' and BW' it is the value of pneumatic torque and the conversion of wind-driven generator coefficient of friction to power transmission shaft, BMIt is simulation electricity
The coefficient of friction of machine.
Described transmission mechanism analog portion, during simulation dynamic characteristic, it is considered to which wind speed changes over time or load generation
The situation of change.Referring to Fig. 8, simulated machine torque is with pneumatic torque relation：
Transmission mechanism analog portion, during simulation dynamic characteristic, in addition to rotating speed, in addition it is also necessary to which the operation of feedback analog motor adds
Speed.When wind speed or load change, there is dynamic change procedure in wind-driven generator rotating speed, produces acceleration.Pass through
Velocity sensor and acceleration transducer realize the feedback of speed and acceleration, and carry out torque closed-loop control to direct current generator,
The accurate simulation of wind-driven generator output torque can be realized.
Described transmission mechanism analog portion, the rotating speed of generator is lifted using gear-box.Carry out more closing to reality wind
The simulation of Force system.
The alternating current of described wind turbine combining inverter, the amplitude that wind-driven generator is produced and frequency change, passes through
Converter system is converted to direct current, then direct current energy is converted into the sine-wave current with power network same frequency, same-phase.By with
The process of inversion after upper first rectification, high-quality regulated power, feed-in are converted into by the unstable electric energy that wind-driven generator is produced
Power network.
Micro-capacitance sensor real time simulator, is developed for wind turbine combining inverter performance detection, there is provided voltage/frequency is responded
The functions such as characteristic, the simulation of zero/low voltage crossing, power quality index simulation.Power supply can in simulating grid frequency and voltage one
As property change, and voltage dip, short interruptions, flash down, frequency drift, imbalance of three-phase voltage of civil power etc. can be simulated.
Described micro-capacitance sensor real time simulator, sets the situation of change of the power networks such as frequency drift, voltage jump, to observe electricity
The dynamic changing process of wind turbine parameter in the case of net load change, and parameter waveform is shown in monitor, conveniently enter line number
According to analysis.Equipment uses three-phase Decoupling design, can respectively adjust the parameter states such as voltage, the frequency of each phase.
The anti-island loads of described RLC, are that grid connection security protects most important project.Generally using actively anti-isolated island and quilt
The pattern that anti-isolated island is combined is moved, linkage protection is realized.
Knowable to foregoing description, the present invention substitutes original full software simulation system with semi-matter simulating system, uses reality
The part of thing is：Brshless DC motor, transmission mechanism and generator.Wind turbine is no longer connected with single load, but by inversion
Device and powerful micro-capacitance sensor real time simulator are incorporated into power network, using load torque regulation that can be controlled, not only can be with complete
Observed into most basic static characteristic, it is also possible to realize the observation for wind power system dynamic variation characteristic.Existing emulation system
System only considers the change or the only change of consideration load end of input in Dynamic Simulation.The system can realize input
End and the Synchronization Control of load end.Wind-driven generator real time simulator is used as input, it is possible to achieve generator output torque
Control.Micro-capacitance sensor real time simulator is used as load end, it is possible to achieve the control of load situation of change.
It is further description this programme, the present invention also provides a kind of application wind-driven generator grid-connected HWIL simulation
The concrete application example of the emulation mode of system, the concrete application example of the emulation mode includes following content：
S1：By wind environment and wind-driven generator model parameter (including wind speed, atmospheric density, wind-driven generator physics ginseng
Number etc.) input wind-driven generator real time simulator；
S2：Wind turbine is set and is incorporated to load torque in micro-capacitance sensor, using engine controller, controlled motor make its with it is inverse
Become device and the connection of micro-capacitance sensor real time simulator, powered using local power grid, the stable operation under given primary condition.
S3：Wind-driven generator real time simulator calculates wind-force according to wind-force parameter, and the motor speed that sensor is measured
The pneumatic torque of generator output, and show torque numerical value；
S4：By the serial communication between wind-driven generator real time simulator, DC motor controller reads torque number
Value, torque closed-loop control is carried out to simulated machine, makes the output torque of simulated machine identical with the wind-driven generator of emulation；
S5：By transmission mechanism, simulated machine drives generator operation, realizes the simulation to wind-power electricity generation；
S6：Select the simulated conditions of wind power system.Static characteristic simulation performs step B1, and Dynamic Simulation performs step
B2。
Wherein, B1：Wind power system stable operation under static characteristic analog case.Wind-driven generator real time simulator is set
Parameter, makes wind speed keep constant.The parameter of micro-capacitance sensor real time simulator is set simultaneously, keeps load constant, by sensor
The change procedure of rotating speed and torque feedback curve, observation motor torque and rotating speed.
B2：Dynamic Simulation includes two broad aspects.On the one hand it is the simulation of input fluctuations in wind speed, performs step C1.
On the other hand it is the simulation of load end fluctuation, performs step C2.
C1：In wind-driven generator real time simulator, set wind speed change condition, for example make wind speed from 5m/s steps to
7m/s.Micro-capacitance sensor real time simulator is controlled simultaneously, keeps load torque constant.Rotating speed and torque feedback by sensor is bent
The change procedure of line, observation motor speed and torque.
C2：In micro-capacitance sensor real time simulator, the condition of load changing is set, for example, makes power network single-phase voltage halve, or
The failure situations such as branch, short-circuit, open circuit are set.Wind-driven generator real time simulator is controlled simultaneously, keeps wind speed constant.By passing
The change procedure of the rotating speed and torque feedback curve of sensor, observation motor speed and torque.
S1-S6 is primary condition setting unit, and using the wind environment for presetting, simulating wind power generation progressively started
Journey.Rotating speed and torque feedback curve according to sensor, after above-mentioned parameter is stablized relatively, can perform subsequent step.
B1-B2 is the selected section of system performance, introduces two kinds of characteristics of stable state and dynamic, realizes changing feelings to multiple systems
The observation of condition.
C1-C2 is the core of the technical program.Consider the simulation of dynamic process, the HWIL simulation tested to this
System and existing software simulation system are contrasted.Two kinds of situations of wind speed mutation and load changing of setting, theoretical value experiment bar
Under part, the actual due torque of blower fan high speed shaft and rotating speed are calculated by wind-driven generator real time simulator.Experiment value is biography
The blower fan torque of sensor feedback and speed curves.
Stabilization, the situation of wind speed mutation are kept for load.Due to the presence of machinery inertial, wind-driven generator rotating speed will not
Generation significant change, the mutation of now wind-driven generator torque is caused by the mutation of wind speed.Subsequent generating unit speed changes therewith,
Wind-driven generator torque is gradually balanced with load torque, and unit is again introduced into stable state.
Stabilization, the situation of load changing are kept for wind speed.Such as generator loading torque increases suddenly, and now unit turns
Fast slow reduction, while wind-driven generator torque gradually increases, balances again until with load torque.
Knowable to foregoing description, the present invention receives acceleration due to introducing accelerator feedback loop, simulated machine electromagnetic torque
The effect of feedback is spent, wind-driven generator output torque is modified, it is contemplated that the slowly varying process of speed that inertia causes.Nothing
By mutation wind speed or mutation load, simulation system result preferably can be consistent with actual theoretical value.Effectively improve
The model accuracy of software simulation system.For input, constant load, the situation of wind speed mutation, according to sensor can be set
Rotating speed and torque feedback curve, carry out dynamic characteristic observation.For load end, permanent wind speed, the situation of load changing, root can be set
According to the rotating speed and torque feedback curve of sensor, dynamic characteristic observation is carried out.The simulation system of the single load of contrast tradition, there is provided
The simulation of more load end situations of change.Including voltage dip, short interruptions, short circuit, frequency drift, imbalance of three-phase voltage etc.
Situation.Broader grid-connected fault state observation is realized, the practical application to wind turbine in power supply process has outstanding reference
Property.
Above example is merely to illustrate technical scheme, rather than its limitations；Although with reference to the foregoing embodiments
The present invention has been described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent to which part technical characteristic；And these are changed or replace
Change, do not make the spirit and scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution.
Claims (10)
1. a kind of micro-capacitance sensor semi-matter simulating system, it is characterised in that including：|input paramete control module, the wind being sequentially connected
Power generator emulation module and grid-connected module；
The |input paramete control module, for the |input paramete for simulating the wind-driven generator for obtaining to be sent to wind-force hair
Emulation of Electrical Machinery module；
The wind-driven generator emulation module, for carrying out simulation run according to the |input paramete for receiving；
The grid-connected module, for controlling the wind-driven generator emulation module to access micro-capacitance sensor simulation source and local power grid.
2. system according to claim 1, it is characterised in that the |input paramete control module includes：Wind-driven generator
Real time simulator, DC motor controller and power supply；
The wind-driven generator real time simulator is used for the output parameter according to wind electricity motivation, using wind-driven generator closed loop control
Method processed obtains the |input paramete of the wind-driven generator, and the |input paramete is sent to DC motor controller；
The DC motor controller carries out simulation run according to the |input paramete control wind-driven generator emulation module；
The power supply connects the wind-driven generator real time simulator and DC motor controller respectively；
Wherein, the output parameter includes different wind environments, the output torque of wind electricity motivation and rotating speed；The input ginseng
Number includes armature supply and rotating speed.
3. system according to claim 2, it is characterised in that the wind-driven generator emulation module includes：It is sequentially connected
Dc motor, transmission mechanism and generator；
The dc motor is communicated to connect with the DC motor controller, and sent according to the DC motor controller
|input paramete simulates the operation of the wind electricity motivation so that the power output and output torque of the dc motor with it is described
Wind electricity motivation is identical；
The both sides of the transmission mechanism connect the turning end of the dc motor and generator respectively；
The generator is according to exchanging that the synchronous operation generation amplitude and frequency of the transmission mechanism and dc motor change
Electricity, and the alternating current transmission that the amplitude and frequency are changed is to the grid-connected module.
4. system according to claim 3, it is characterised in that the dc motor is provided with velocity sensor, and institute
State velocity sensor to be communicated to connect with the DC motor controller, by dc motor speed operationally and acceleration
Degree is sent to the DC motor controller.
5. system according to claim 3, it is characterised in that the transmission mechanism is gear-box, and the gear-box will
The action that the dc motor is produced passes to the turning end of the generator.
6. system according to claim 3, it is characterised in that the grid-connected module includes：It is respectively connecting to the inverse of power network
Become device, micro-capacitance sensor real time simulator, engine controller and the anti-island loads of RLC；
One end of the inverter is connected with the output end of generator, and the other end connects the micro-capacitance sensor real time simulator respectively,
And the alternating current that the inverter changes the amplitude of reception and frequency is converted to direct current energy by converter system, then will be described
Direct current energy is converted to the sine-wave current with local power grid same frequency and same-phase, and is input into local power grid；
The engine controller is communicated to connect with the generator；
The micro-capacitance sensor real time simulator is used to set power network running parameter；
The island mode of the anti-island loads of RLC is the pattern that actively anti-isolated island and passive anti-isolated island are combined；
Wherein, the power network running parameter includes：Frequency drift and voltage jump parameter.
7. system according to claim 3, it is characterised in that the dc motor is brshless DC motor BLDCM.
8. a kind of wind-driven generator closed loop control method of the system based on described in claim 2, it is characterised in that including：
Wind-driven generator real time simulator described in step 1. obtains the rotating speed of dc motor and pre- according to the velocity sensor
If gear shift ratio, determine the rotating speed of the wind-driven generator；
Wind-driven generator described in step 2. is calculated the wind-force hair according to the rotating speed and default wind speed of the wind-driven generator
The pneumatic torque of motor；
Wind-driven generator real time simulator described in step 3. sends to the direct current pneumatic torque of the wind-driven generator
Machine controller.
9. method according to claim 8, it is characterised in that methods described also includes：
DC motor controller described in step 4. adjusts the armature of dc motor according to the pneumatic torque of the wind-driven generator
Voltage so that the output torque of the wind-driven generator emulation module is identical with the pneumatic torque of wind-driven generator.
10. method according to claim 8, it is characterised in that also include before the step 1：
Step 0. determines the electromagnetism of the wind-driven generator according to the counter electromotive force of the dc motor, phase current and rotating speed
Torque feedback value；
Wherein, the phase current is obtained according to the phase current sensor being arranged on the dc motor with speed probe,
The counter electromotive force is obtained according to the synovial membrane observer being arranged on the dc motor.
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