CN108508360A - Based on RT-Lab Double-feed wind powers virtual synchronous generator performance test method and system - Google Patents
Based on RT-Lab Double-feed wind powers virtual synchronous generator performance test method and system Download PDFInfo
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- CN108508360A CN108508360A CN201810252579.9A CN201810252579A CN108508360A CN 108508360 A CN108508360 A CN 108508360A CN 201810252579 A CN201810252579 A CN 201810252579A CN 108508360 A CN108508360 A CN 108508360A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
Abstract
The present invention, which provides, a kind of being based on RT Lab Double-feed wind powers virtual synchronous generator performance test methods and system, wherein system includes：Mathematical model, double-fed wind turbine master controller, inverter controller and the observation device built in RT Lab replicating machines, wherein the mathematical model includes asynchronous machine, transformer, current transformer and power grid.Transformer is arranged between asynchronous machine stator and power grid；Current transformer is arranged between asynchronous machine rotor and asynchronous machine stator；Double-fed wind turbine master controller is equipped with the simulation program of fan body and drive shaft system, connects inverter controller and the RT Lab replicating machines；Inverter controller connects the RT Lab replicating machines；Observation device connects double-fed wind turbine master controller and inverter controller.The present invention can avoid the limitation of on-the-spot test so that test result and Practical Project are more close.Meanwhile, it is capable to be fully assessed to the control strategy of the Double-feed wind power virtual synchronous generator of different manufacturers, guidance is provided for engineer application.
Description
Technical field
The invention belongs to wind-powered electricity generation fields, more particularly to one kind being based on RT-Lab Double-feed wind power virtual synchronous generator performances
Test method and system.
Background technology
With the increasingly depleted of traditional energy and increasingly sharpening for environmental problem, using photovoltaic, wind-powered electricity generation as the new energy of representative
Generation technology development is swift and violent, and double-fed wind turbine has accounted for sizable ratio wherein.Since double-fed wind turbine uses asynchronous generating
Machine, output power there's almost no with mains frequency and voltage and couple, therefore is difficult for power grid and provides necessary frequency and voltage
Support.With the continuous improvement of double-fed wind turbine permeability in power grid, an urgent demand double-fed wind turbine has to generate electricity with conventional synchronization
The similar frequency modulation and voltage modulation ability of machine, virtual synchronous generator (Virtual Synchronous Generator, VSG) technology carry
A solution is supplied.
VSG technologies by simulating the characteristics such as active frequency modulation and idle pressure regulation in the controls so that double-fed wind turbine is grid-connected
System is similar with synchronous generator in external characteristics, to provide frequency and voltage support for power grid.The research of VSG technologies is current
It is still in the starting stage, still has certain distance apart from large-scale engineering applications.In order to which Double-feed wind power virtual synchronous generator exists
Following large-scale promotion and application, there is an urgent need to which its performance is tested and assessed, and still lacks effective double-fed at present
Type wind-powered electricity generation virtual synchronous generator performance test method and system.
The performance test of Double-feed wind power virtual synchronous generator is mainly realized by the method for Digital Simulation at present.Number
Word emulation mode is only capable of providing qualitative verification to control strategy, with real system in control structure, signal transmission, parameter tuning
Etc. have very big difference, it is limited to the directive significance of engineer application.Therefore, also lack at present it is a kind of it is practical close to engineering, cut
It is real it is feasible, it can be considered that the Double-feed wind power virtual synchronous generator performance test method of different manufacturers product differentiation and being
System.
Invention content
The present invention is used to solve to use the method verification Double-feed wind power virtual synchronous power generation of Digital Simulation in the prior art
On the one hand the performance of machine has greater difference with Practical Project consistency, on the other hand can not be to the otherness of different manufacturers product
It is considered.
A technical solution of the invention is to provide one kind to test based on RT-Lab Double-feed wind power virtual synchronous generator performances
System, including：Mathematical model, double-fed wind turbine master controller, inverter controller and the observation built in RT-Lab replicating machines
Equipment, wherein the mathematical model includes asynchronous machine, transformer, current transformer and power grid；
The transformer is arranged between asynchronous machine stator and the power grid, for boosting；
The current transformer is arranged between asynchronous machine rotor and asynchronous machine stator, for according to second control signal tune
The electromagnetic torque and rotating speed of the whole asynchronous machine；
The double-fed wind turbine master controller is equipped with the simulation program of fan body and drive shaft system, connects the current transformer
Controller and the RT-Lab replicating machines send rotation speed of fan for sending out first control signal to the inverter controller
To the asynchronous machine rotor；
The inverter controller connects the RT-Lab replicating machines, for sending out the second control according to first control signal
Signal is to the current transformer；
The observation device connects the double-fed wind turbine master controller and the inverter controller, for observing and recording
Electrical quantity in the double-fed wind turbine master controller and the inverter controller.
Another technical solution of the present invention is to provide one kind to survey based on RT-Lab Double-feed wind power virtual synchronous generator performances
Method for testing, including：
Build the Double-feed wind power virtual synchronous test system for generator described in previous embodiment；
Setting emulation duty parameter, double-fed wind turbine master controller parameter and inverter controller parameter, utilize observation device
It observes and records the electrical quantity in the double-fed wind turbine master controller and the inverter controller；
The performance indicator of Double-feed wind power virtual synchronous generator is analyzed according to the electrical quantity of observation device record；
The performance indicator that analysis obtains is compared with standard index, determines whether performance indicator meets the requirements.
The present invention will propose the test of Double-feed wind power virtual synchronous generator performance using the tool of half hardware in loop in kind
Method and system can avoid the limitation of on-the-spot test so that test result and Practical Project are more close.Meanwhile, it is capable to
To control strategy (double-fed wind turbine master controller and the Frequency Converter Control of the Double-feed wind power virtual synchronous generator of different manufacturers
Device) it is fully assessed, provide guidance for engineer application.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, others are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the knot that system is tested based on RT-Lab Double-feed wind power virtual synchronous generator performances of the embodiment of the present invention
Composition；
Fig. 2 is the embodiment of the present invention based on the practical connection figure of RT-Lab Double-feed wind power virtual synchronous generators；
Fig. 3 is the stream based on RT-Lab Double-feed wind power virtual synchronous generator performance test methods of the embodiment of the present invention
Cheng Tu；
Mains frequency when Fig. 4 a and Fig. 4 b are the Double-feed wind power virtual synchronous generator inertia test of the embodiment of the present invention
And the waveform variation diagram of active power；
Power grid when Fig. 5 a and Fig. 5 b are the Double-feed wind power virtual synchronous generator primary frequency modulation test of the embodiment of the present invention
The waveform variation diagram of frequency and active power.
Specific implementation mode
In order to which the technical characterstic and effect that make the present invention are more obvious, technical scheme of the present invention is done below in conjunction with the accompanying drawings
It further illustrates, the specific example that the present invention also can have other different is illustrated or implements, any those skilled in the art
The equivalents done within the scope of the claims belong to the protection category of the present invention.
In the description of this specification, reference term " embodiment ", " specific embodiment ", " such as ", etc. description
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained in at least one of the present invention
In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or
Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiments or example
In can be combined in any suitable manner.Implementation of the step of involved in each embodiment sequentially for schematically illustrating the present invention, it is therein
Sequence of steps is not construed as limiting, and can be appropriately adjusted as needed.
As shown in FIG. 1, FIG. 1 is the embodiment of the present invention to be surveyed based on RT-Lab Double-feed wind power virtual synchronous generator performances
The structure chart of test system, the present embodiment can avoid the limitation of on-the-spot test so that test result more connects with Practical Project
Closely.Meanwhile, it is capable to Double-feed wind power virtual synchronous generator to different manufacturers control strategy (double-fed wind turbine master controller and
Frequency converter controller) it is fully assessed, provide guidance for engineer application.
Specifically, including based on RT-Lab Double-feed wind power virtual synchronous generator performances test system：It is imitative in RT-Lab
Mathematical model 100, double-fed wind turbine master controller 200, inverter controller 300 and the observation device 400 built in prototype,
In, mathematical model 100, double-fed wind turbine master controller 200, inverter controller 300 constitute the power generation of Double-feed wind power virtual synchronous
Machine, mathematical model 100 include asynchronous machine 110, transformer 120, current transformer 130 and power grid 140.
Transformer 120 is arranged between asynchronous machine 110 and power grid 140, for boosting, as shown in Figure 1, transformer passes through
Transmission line connects asynchronous machine 110 and power grid 140.When it is implemented, mathematical model includes two-stage transformer, 35kV/690V
Transformer and 220kV/35Kv transformers.
Current transformer 130 is arranged between asynchronous machine rotor and asynchronous machine stator (as shown in Figure 2), for according to second
The electromagnetic torque and rotating speed for controlling signal adjustment asynchronous machine adjust grid-connected total current to realize.
Double-fed wind turbine master controller 200 is equipped with the simulation program 210 of fan body and drive shaft system, connects current transformer control
Device 300 and RT-Lab replicating machines processed send rotation speed of fan to different for sending out first control signal to inverter controller 300
Walk rotor.Specifically, first control signal is, for example, wind turbine electromagnetic torque command value and propeller pitch angle command value.
Inverter controller 300 connects RT-Lab replicating machines, for sending out second control signal according to first control signal
To current transformer 130.Specifically, second control signal is, for example, net side current transformer IGBT pulse signals, generator-side converter wear IGBT
Pulse signal, net side contactor switching signal, excitation contactor switching signal etc. control signal.
Observation device 400 connects double-fed wind turbine master controller 200 and inverter controller 300, double for observing and recording
Present the electrical quantity in wind turbine master controller 200 and inverter controller 300.
In the present embodiment, it is compiled into C code after mathematical model real time implementation, is downloaded in RT-Lab replicating machines.Double-fed wind turbine
Master controller and inverter controller are entity hardware, can be that the market-oriented product of arbitrary manufacturer (is run with scene
Double-fed wind turbine master controller is consistent) or the product developed, the present invention is to double-fed wind turbine master controller and inverter controller
Production firm, model etc. be not construed as limiting.Pass through fieldbus between double-fed wind turbine master controller and inverter controller
(Rrobus) it is connected, double-fed wind turbine master controller and inverter controller are connected by I/O interface with RT-Lab replicating machines, are passed through
Software set is connected to realize with the specific device in mathematical model.
In one embodiment of the invention, mathematical model also may include main circuit of converter, protection circuit, filter branch etc..
In one embodiment of the invention, observation device is host computer oscillograph, host computer recording software or oscillograph.Observation is set
It is standby to go back Observable other than observing and recording electrical quantity and record the mechanical quantities such as rotation speed of fan, propeller pitch angle, mechanical output, so as to
Judge whether fan body and drive shaft system are normal according to these mechanical quantities.
Further, observation device be additionally operable to observe and record network voltage, power network current, stator voltage, stator current,
The analog quantitys such as voltage on line side, current on line side, pusher side voltage, side currents, DC bus-bar voltage, Crowbar voltages, net side contact
The digital quantity signals such as device switching signal, excitation contactor switching signal.
In one embodiment of the invention, the situation of change of each parameters of operating part in mathematical model is understood for the ease of tester,
Further include multiple oscillographs in mathematical model, is connect respectively with asynchronous electronics, transformer, current transformer and power grid.
In one embodiment of the invention, the electrical quantity of observation device record includes：Electromagnetic power, grid entry point voltage and grid-connected total
Electric current.Wherein, electromagnetic power is obtained from double-fed wind turbine main controller, and grid entry point voltage and grid-connected total current are obtained from inverter controller
It takes.
As shown in figure 3, Fig. 3 is being surveyed based on RT-Lab Double-feed wind power virtual synchronous generator performances for the embodiment of the present invention
The flow chart of method for testing.It is first built before being implemented based on RT-Lab Double-feed wind power virtual synchronous generator performance test methods aforementioned
Double-feed wind power virtual synchronous test system for generator described in embodiment, as shown in Figure 1.It is virtually same Double-feed wind power has been built
Follow-up test process can be carried out after step test system for generator.
Specifically, the method includes：
Step 301, setting emulation duty parameter, and/or double-fed wind turbine master controller parameter, and/or inverter controller
Parameter is observed using observation device and records the electrical quantity in the double-fed wind turbine master controller and the inverter controller.
Specifically, the emulation duty parameter includes：Mains frequency, network voltage and wind speed.Wind speed can be certain
Value is arranged by the simulation program of fan body and drive shaft system.Mains frequency and network voltage can be according to step or oblique waves
Form changes, and is arranged by the power grid in mathematical model, and specific version with test event (survey by inertia test, primary frequency modulation
Examination) it is related, this is not limited by the present invention.The double-fed wind turbine master controller parameter includes：Inertia coefficient of frequency modulation, primary frequency modulation
Coefficient and supporting time etc..The parameter of the inverter controller includes：Frequency filtering coefficient and ratio/integral coefficient etc..
Step 302, the performance that Double-feed wind power virtual synchronous generator is analyzed according to the electrical quantity of observation device record refers to
Mark.Specifically, the performance indicator of the Double-feed wind power virtual synchronous generator includes active power, response time, adjusting
One or more of time, support amplitude, supporting time, power error and power swing, performance indicator specific formula for calculation
Referring to the prior art, this is not limited by the present invention.
Step 303：The performance indicator that analysis obtains is compared with respective standard index, determines whether performance indicator accords with
It closes and requires.If analyzing obtained performance indicator in respective standard indication range, it is determined that performance indicator meets the requirements, conversely,
It is then undesirable.
In some embodiments, in the case of undesirable, can return to step 301 adjustment emulation duty parameter and/
Or double-fed wind turbine master controller parameter, and/or inverter controller parameter, repetition step 302~step 303 further determine that
Whether performance indicator meets the requirements, if repeatedly test is undesirable, feeds back to double-fed wind turbine master controller, current transformer control
Zhi Qi manufacturers, to be adjusted to double-fed wind turbine master controller and inverter controller algorithm.
In other embodiment, in the case of undesirable, current transformer control parameter can be only adjusted, repeats above-mentioned step
Rapid 302 and step 303, determine whether performance indicator can tune to normal range (NR).
In one embodiment of the invention, the setting emulation of above-mentioned steps 301 duty parameter, double-fed wind turbine master controller parameter and change
Device controller parameter is flowed, is observed and is recorded in the double-fed wind turbine master controller and the inverter controller using observation device
The process of the electrical quantity in portion includes：
1) setting is initial first emulates duty parameter, and it is rated value that mains frequency and voltage, which is arranged, and certain wind is arranged
Machine rotating speed starts Double-feed wind power virtual synchronous generator and enters stable state.
2) adjustment emulation duty parameter, such as changes mains frequency or network voltage, is observed and recorded by observation device double
The response parameter of feedback type wind-powered electricity generation virtual synchronous generator.Mains frequency or network voltage can become according to step or oblique wave form
Change.
3) controller parameter, including double-fed wind turbine master controller parameter and inverter controller parameter are adjusted, observation is passed through
Equipment observes and records the response parameter of Double-feed wind power virtual synchronous generator.
In one embodiment of the invention, the observation device is also observed and records the machinery in the double-fed wind turbine master controller
Amount, such as rotation speed of fan, propeller pitch angle, mechanical output etc..Before above-mentioned steps 303, among or further include later：Step 303 ',
According to mechanical quantity judge fan body and drive shaft system whether failure.If when it is implemented, step 303 ' it executes in above-mentioned steps
Before 303, when judging that fan body and drive shaft system there are when failure, then need not execute step 303 again；If step 303 '
It executes among above-mentioned steps 303 or later, when judging fan body and drive shaft system there are when failure, even if above-mentioned steps
303 determination performance indicators meet the requirements, also insincere.
In one embodiment of the invention, in order to fully assess the performance of Double-feed wind power virtual synchronous generator, above-mentioned steps
Further include after 304：Repeatedly change emulation duty parameter and/or double-fed wind turbine master controller and/or current transformer control
The parameter of device, repeatedly to be tested.
In a specific embodiment of the invention, using test system proposed above, domestic certain mainstream current transformer control is accessed
The 2MW double-fed wind turbine master controllers and inverter controller of device producer, the waveform obtained under specific operation such as Fig. 4 a, Fig. 4 b,
Shown in Fig. 5 a and Fig. 5 b.Fig. 4 a and Fig. 4 b give mains frequency when Double-feed wind power virtual synchronous generator inertia is tested and have
The waveform of work(power changes, power grid frequency when Fig. 5 a and Fig. 5 b give the test of Double-feed wind power virtual synchronous generator primary frequency modulation
The waveform of rate and active power changes.
When implementation, observation device can also be acquired and be analyzed as needed including rotation speed of fan, wind speed, propeller pitch angle, grid-connected total
Many electrical quantity including electric current etc. and mechanical quantity.
Double-feed wind power virtual synchronous generator performance proposed by the invention tests system and method, can will be actual
Double-fed wind turbine master controller and inverter controller are linked into RT-Lab replicating machines (test system), realize that double-fed wind turbine is virtual
Whole integral links of synchronous generator being built and simulating.Keep test result practical with engineering more closely, in turn avoiding existing
The limitation of field test.For the test method proposed by the way that different emulation duty parameter or controller parameter is arranged, verification is double
The frequency modulation performance of feedback type wind-powered electricity generation virtual synchronous generator, can also to different manufacturers Double-feed wind power virtual synchronous generator solution into
Row fully assesses, and guidance is provided for engineer application.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, the present invention can be used in one or more wherein include computer usable program code computer
The computer program production implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The above is only used to illustrate the technical scheme of the present invention, any those of ordinary skill in the art can without prejudice to
Under the spirit and scope of the present invention, modifications and changes are made to the above embodiments.Therefore, the scope of the present invention should regard
Subject to right.
Claims (12)
1. one kind testing system based on RT-Lab Double-feed wind power virtual synchronous generator performances, which is characterized in that including：
Mathematical model, double-fed wind turbine master controller, inverter controller and the observation device built in RT-Lab replicating machines, wherein institute
It includes asynchronous machine, transformer, current transformer and power grid to state mathematical model；
The transformer is arranged between asynchronous machine stator and the power grid, for boosting；
The current transformer is arranged between asynchronous machine rotor and asynchronous machine stator, for adjusting institute according to second control signal
State the electromagnetic torque and rotating speed of asynchronous machine；
The double-fed wind turbine master controller is equipped with the simulation program of fan body and drive shaft system, connects the current transformer control
Device and the RT-Lab replicating machines send rotation speed of fan to institute for sending out first control signal to the inverter controller
State asynchronous machine rotor；
The inverter controller connects the RT-Lab replicating machines, for sending out second control signal according to first control signal
To the current transformer；
The observation device connects the double-fed wind turbine master controller and the inverter controller, described for observing and recording
Electrical quantity in double-fed wind turbine master controller and the inverter controller.
2. the system as claimed in claim 1, which is characterized in that the electrical quantity includes：Electromagnetic power, grid entry point voltage and simultaneously
Net total current.
3. the system as claimed in claim 1, which is characterized in that the observation device is oscillograph or oscillograph.
4. the system as claimed in claim 1, which is characterized in that the observation device is additionally operable to observe and record the double-fed wind
Mechanical quantity in owner's controller.
5. system as claimed in claim 4, which is characterized in that the mechanical quantity includes：Rotation speed of fan, propeller pitch angle and mechanical work
Rate.
6. a kind of testing system based on Double-feed wind power virtual synchronous generator performance described in any one of claim 1 to 5
Test method, which is characterized in that including：
Setting emulation duty parameter, and/or double-fed wind turbine master controller parameter, and/or and inverter controller parameter, utilize sight
Measurement equipment is observed and records the electrical quantity in the double-fed wind turbine master controller and the inverter controller；
The performance indicator of Double-feed wind power virtual synchronous generator is analyzed according to the electrical quantity of observation device record；
The performance indicator that analysis obtains is compared with standard index, determines whether performance indicator meets the requirements.
7. method as claimed in claim 6, which is characterized in that the emulation duty parameter includes：Mains frequency, network voltage
And wind speed.
8. method as claimed in claim 6, which is characterized in that the double-fed wind turbine master controller parameter includes：Inertia frequency modulation
Coefficient, primary frequency modulation coefficient and supporting time.
9. method as claimed in claim 6, which is characterized in that the inverter controller parameter includes：Frequency filtering coefficient
And ratio/integral coefficient.
10. method as claimed in claim 6, which is characterized in that the performance of the Double-feed wind power virtual synchronous generator refers to
Mark includes：One in active power, response time, regulating time, support amplitude, supporting time, power error and power swing
It is a or multiple.
11. method as claimed in claim 6, which is characterized in that further include：According to the mechanical quantity in double-fed wind turbine master controller
Judge fan body and drive shaft system whether failure, the mechanical quantity in the double-fed wind turbine master controller is recorded in the observation and sets
In standby.
12. method as claimed in claim 6, which is characterized in that further include：Change emulation duty parameter and/or double-fed wind turbine
Master controller parameter and/or inverter controller parameter carry out repeatedly test to fully assess Double-feed wind power virtual synchronous hair
The performance of motor.
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| CN110334385A (en) * | 2019-05-09 | 2019-10-15 | 南方电网科学研究院有限责任公司 | Test method, device and the equipment of integrated energy system central controller |
| CN114153155A (en) * | 2021-11-30 | 2022-03-08 | 上海电机学院 | Wind power generation converter semi-physical simulation platform |
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| CN110334385A (en) * | 2019-05-09 | 2019-10-15 | 南方电网科学研究院有限责任公司 | Test method, device and the equipment of integrated energy system central controller |
| CN114153155A (en) * | 2021-11-30 | 2022-03-08 | 上海电机学院 | Wind power generation converter semi-physical simulation platform |
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