CN106227184A - Straight drive blower impedance hardware-in-the-loop test system and method - Google Patents
Straight drive blower impedance hardware-in-the-loop test system and method Download PDFInfo
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- CN106227184A CN106227184A CN201610507052.7A CN201610507052A CN106227184A CN 106227184 A CN106227184 A CN 106227184A CN 201610507052 A CN201610507052 A CN 201610507052A CN 106227184 A CN106227184 A CN 106227184A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
Abstract
The invention discloses a kind of straight drive blower impedance hardware-in-the-loop test system and method; wherein system includes: power electronics real-time simulation platform, and described power electronics real-time simulation platform is built and included electrical network, for the small signal source of testing impedance or current source, the real-timedigital simulation model of axle system, motor, main circuit of converter, protection circuit and the filter branch of Wind turbines；Described real-timedigital simulation model is downloaded in the replicating machine of described power electronics real-time simulation platform after real time implementation；Straight drive blower controller to be measured, by the input/output interface of described replicating machine, is attached with described real-timedigital simulation model.The present invention can realize straight drive blower impedance hardware-in-the-loop test with flexible and convenient, and actual close to engineering, makes test result more accurate.
Description
Technical field
The present invention relates to technical field of electric power, particularly relate to straight drive blower impedance hardware-in-the-loop test system and method.
Background technology
Impedance is the basic feature of electrical system.At present, system stability analysis based on impedance is the heat of academic research
Point, has been used to solve to comprise the system stability analysis problem of power electronic equipment.Therefore, calculate or measure each and electrically set
Standby impedance is significant, and calculates or measure straight drive blower impedance, for comprising the power system stability of straight drive blower
Property analyze particularly significant.
There is following several respects problem in calculating or measurement to straight drive blower impedance at present.First, use Theoretical Calculation
Method calculates straight drive blower impedance, is only applicable to the straight drive blower model of classics at present, and does not consider in esse filtering
The links such as branch road, and the model difference of different manufacturers is bigger.Second, the most academicly to the research of straight drive blower impedance the most very
Few, the only impedance to voltage converter carried out discussion, can not reflect the impedance conditions of straight drive blower.3rd, use
Time-domain-simulation method measures the impedance of straight drive blower mathematical model, due to Digital Simulation and engineering physical presence different, therefore
The impedance of this kind of method measurement is limited to the directive significance that engineering is actual.4th, the physical system test built for laboratory
Straight drive blower impedance, this kind of method is implemented difficulty relatively greatly, is needed to build the whole system including straight drive blower, operate multiple
Miscellaneous.
Summary of the invention
The embodiment of the present invention provides a kind of straight drive blower impedance hardware-in-the-loop test system, realizes directly in order to flexible and convenient
Drive blower impedance hardware-in-the-loop test, and actual close to engineering, make test result more accurate, this straight drive blower impedance hardware exists
Ring test system includes:
Power electronics real-time simulation platform, described power electronics real-time simulation platform has been built and has been included electrical network, for impedance
The small signal source of test or current source, the axle system of Wind turbines, motor, main circuit of converter, protection circuit and filtering
The real-timedigital simulation model on road；Described real-timedigital simulation model is downloaded to described power electronics real-time simulation after real time implementation
In the replicating machine of platform；
Straight drive blower controller to be measured, by the input/output interface of described replicating machine, with described real-timedigital simulation mould
Type is attached.
In one embodiment, described power electronics real-time simulation platform includes RT-LAB.
In one embodiment, described real-timedigital simulation model output analog quantity include: line voltage, power network current,
Stator voltage, stator current, voltage on line side, net side blocks current, pusher side voltage, pusher side blocks current, DC bus-bar voltage and
Rotor speed one of them or combination in any.
In one embodiment, the digital quantity of described real-timedigital simulation model output includes: net side contactor switching signal
And/or excitation contactor switching signal.
In one embodiment, the digital quantity of described real-timedigital simulation mode input includes: net side converter IGBT pulse
Signal, pusher side current transformer IGBT pulse signal, net side contactor switching signal and excitation contactor switching signal one of them or
Combination in any.
The embodiment of the present invention also provides for a kind of straight drive blower impedance hardware-in-the-loop test method, realizes in order to flexible and convenient
Straight drive blower impedance hardware-in-the-loop test, and actual close to engineering, make test result more accurate, this straight drive blower impedance hardware
Include at ring test method:
Build at power electronics real-time simulation platform and include electrical network, for the small signal source of testing impedance or electric current
Source, the real-timedigital simulation model of axle system, motor, main circuit of converter, protection circuit and filter branch of Wind turbines；
The replicating machine of described power electronics real-time simulation platform will be downloaded to after described real-timedigital simulation model real time implementation；
By straight drive blower controller to be measured by the input/output interface of described replicating machine and described real-timedigital simulation mould
Type is attached；
Small signal source or the amplitude of current source and frequency are set, test straight drive blower voltage and current signal, according to
Test gained straight drive blower voltage and current signal, calculates the straight drive blower impedance under this frequency；
Revise small signal source or the amplitude of current source and frequency, repeat above-mentioned test straight drive blower voltage and current letter
Number and calculate the process of straight drive blower impedance under this frequency.
In one embodiment, described power electronics real-time simulation platform includes RT-LAB.
In one embodiment, described real-timedigital simulation model output analog quantity include: line voltage, power network current,
Stator voltage, stator current, voltage on line side, net side blocks current, pusher side voltage, pusher side blocks current, DC bus-bar voltage and
Rotor speed one of them or combination in any.
In one embodiment, the digital quantity of described real-timedigital simulation model output includes: net side contactor switching signal
And/or excitation contactor switching signal.
In one embodiment, the digital quantity of described real-timedigital simulation mode input includes: net side converter IGBT pulse
Signal, pusher side current transformer IGBT pulse signal, net side contactor switching signal and excitation contactor switching signal one of them or
Combination in any.
In embodiments of the present invention, carry out directly by building real-timedigital simulation model at power electronics real-time simulation platform
Drive blower impedance hardware-in-the-loop test, with the technical scheme phase that the method for existing employing Theoretical Calculation calculates straight drive blower impedance
Ratio, digital simulation model can carry out differentiation design according to different manufacturers, and be not only applicable to the straight drive blower mould of classics
Type, and consider the links such as in esse filter branch, test result can be made more accurate；And straight wind dispelling can be reflected
The impedance conditions of machine.
In embodiments of the present invention, straight drive blower controller to be measured to Digital Simulation and reality is combined, with existing employing
Time-domain-simulation method is measured the impedance of straight drive blower mathematical model and is compared, it is contemplated that the impact of actual straight drive blower controller, permissible
Make test process actual closer to engineering, promote the directive significance actual to engineering.
In embodiments of the present invention, build at power electronics real-time simulation platform and include electrical network, little for testing impedance
Signal voltage source or current source, axle system, motor, main circuit of converter, protection circuit and filter branch real-time of Wind turbines
Digital simulation model；Real-timedigital simulation model is utilized to carry out straight drive blower impedance hardware-in-the-loop test, it is not necessary to take at laboratory
Build physical system, implement difficulty little, convenient and flexible operation.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in embodiment being described below required for make
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only some embodiments of the present invention, for
From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.In the accompanying drawings:
Fig. 1 is the schematic diagram of straight drive blower impedance hardware-in-the-loop test system in the embodiment of the present invention；
Fig. 2 is straight drive blower impedance hardware-in-the-loop test system example figure based on RT-LAB in the embodiment of the present invention；
Fig. 3 is the schematic diagram of straight drive blower impedance hardware-in-the-loop test method in the embodiment of the present invention；
Fig. 4 is straight drive blower impedance hardware-in-the-loop test fructufy illustration in the embodiment of the present invention.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the accompanying drawings to this
Bright embodiment is described in further details.Here, the schematic description and description of the present invention is used for explaining the present invention, but also
Not as a limitation of the invention.
The stability of power system problem comprising straight drive blower is the most academic and the focus of engineering research, therefore, calculates
Or it is significant to measure straight drive blower impedance.In order to flexible and convenient realize straight drive blower impedance hardware-in-the-loop test, and
Actual close to engineering, make test result more accurate, the embodiment of the present invention provides a kind of straight drive blower impedance hardware-in-the-loop test
System, as it is shown in figure 1, this straight drive blower impedance hardware-in-the-loop test system may include that
Power electronics real-time simulation platform 1, power electronics real-time simulation platform 1 has been built and has been included electrical network, for impedance survey
The small signal source of examination or current source, axle system, motor, main circuit of converter, protection circuit and the filter branch of Wind turbines
Real-timedigital simulation model 11；Real-timedigital simulation model 11 is downloaded to power electronics real-time simulation platform 1 after real time implementation
Replicating machine 12 in；
Straight drive blower controller 2 to be measured, by the input/output interface 121 of replicating machine 12, with real-timedigital simulation model
11 are attached.
It is known that the straight drive blower impedance hardware-in-the-loop test system of the embodiment of the present invention, it is possible to realize straight drive blower
The hardware-in-the-loop test of controller, can arrange test condition and operating condition in real-timedigital simulation model flexibly, operation
Easy to be flexible, and use physical controller, real closer to engineering than the scheme using Digital Simulation in prior art completely
Border.This test system is it can be considered that the impact of actual controller, it is achieved the impedance measurement of drive blower straight to different manufacturers.
In embodiment, this straight drive blower impedance hardware-in-the-loop test system can arrange different emulation operating modes or controller
Parameter, by amendment small signal source or the amplitude of current source and frequency, arranges different test conditions, thus test is directly driven
Blower fan impedance operator at different frequencies.
When being embodied as, multiple power electronics real-time simulation platform can be used to realize straight drive blower impedance hardware in loop and to survey
Examination.Such as can carry out straight drive blower impedance hardware-in-the-loop test based on power electronics real-time simulation platforms such as RT-LAB.With RT-
As a example by LAB, can build in RT-LAB and include electrical network, for the small signal source of testing impedance or current source, wind turbine
The real-timedigital simulation model of axle system, motor, main circuit of converter, protection circuit and filter branch of group, straight by certain producer
Drive blower controller is connected with the real-timedigital simulation model built at RT-LAB by the I/O interface of RT-LAB replicating machine, thus
Realizing the hardware-in-loop simulation system for straight drive blower testing impedance, this system uses straight drive blower inverter controller in kind
A closed loop system is constituted with digital simulation model.Wherein real-timedigital simulation model includes small signal source or current source mould
Type, is used for arranging testing impedance condition.Specific operating condition such as can be set in real-timedigital simulation model, by setting
Put for the small signal source of testing impedance or current source, test the electric current of this straight drive blower impedance hardware-in-the-loop test system
Response condition, and then calculate straight drive blower impedance.
Fig. 2 is straight drive blower impedance hardware-in-the-loop test system example figure based on RT-LAB in the embodiment of the present invention.As
Shown in Fig. 2, the real-timedigital simulation model built at RT-LAB includes representing electrical network, for the small signal source of impedance measurement
Or the digital simulation model of the equipment such as current source, the axle system of Wind turbines, motor, main circuit of converter, protection circuit, filtering are propped up
The mathematical model on road etc..Real-timedigital simulation model can be compiled into C code after real time implementation, and downloads to RT-LAB replicating machine
In.Be connected with real-timedigital simulation model in Fig. 2 is that straight drive blower controller is in kind, can use different manufacturers city
The product of fieldization, consistent with the controller installed in the straight drive blower that scene is run；The product developed can also be used
Test.Controller material object is attached by the I/O interface on RT-LAB replicating machine with real-timedigital simulation model.In Fig. 2
Show that the transmission line on digital simulation model, small signal source, blower fan collect line, Wind turbines controller material object etc.,
Also show the output of replicating machine I/O interface or set end voltage signal, machine end current signal and the air-blower control signal of input.
When being embodied as, the analog quantity of real-timedigital simulation model output may include that line voltage, power network current, determines
Sub-voltage, stator current, voltage on line side, net side blocks current, pusher side voltage, pusher side blocks current, DC bus-bar voltage and turn
One of them or the combination in any such as rotor speed.When being embodied as, the digital quantity of real-timedigital simulation model output may include that net
Side contactor switching signal and/or excitation contactor switching signal etc..When being embodied as, the number of real-timedigital simulation mode input
Word amount may include that net side converter IGBT pulse signal, pusher side current transformer IGBT pulse signal, net side contactor switching signal
And one of them or the combination in any such as excitation contactor switching signal.
Fig. 3 is the schematic diagram of straight drive blower impedance hardware-in-the-loop test method in the embodiment of the present invention, as it is shown on figure 3, should
Straight drive blower impedance hardware-in-the-loop test method may include that
Step 301, build at power electronics real-time simulation platform and include electrical network, small signal source for testing impedance
Or the real-timedigital simulation mould of axle system, motor, main circuit of converter, protection circuit and the filter branch of current source, Wind turbines
Type；
Step 302, the replicating machine of power electronics real-time simulation platform will be downloaded to after real-timedigital simulation model real time implementation；
Step 303, the input/output interface that straight drive blower controller to be measured is passed through replicating machine and real-timedigital simulation mould
Type is attached；
Step 304, small signal source or the amplitude of current source and frequency are set, test straight drive blower voltage and current letter
Number, according to test gained straight drive blower voltage and current signal, calculate the straight drive blower impedance under this frequency；
Step 305, amendment small signal source or the amplitude of current source and frequency, repeat above-mentioned test straight drive blower voltage
With current signal calculate the process of straight drive blower impedance under this frequency.
As it was previously stated, straight drive blower impedance hardware-in-the-loop test method can be by actual straight wind dispelling in the embodiment of the present invention
Machine controller is linked in above-mentioned straight drive blower impedance hardware-in-the-loop test system, makes test result more connect with engineering reality
Closely, turn avoid the limitation of on-the-spot test.Different manufacturers controller can be tested by this method of testing, it is simple to calculates straight
The impedance of drive blower, and it is applied to the stability analysis of power system.
As an example, the testing procedure of straight drive blower impedance can be such that
1. utilize previously described straight drive blower impedance hardware-in-the-loop test system, access straight drive blower controller to be measured.
2. arranging small signal source or the amplitude of current source and frequency, amplitude is usually arranged as the percent of fundamental voltage
Several, frequency configuration is frequency values to be calculated, and usual computer capacity is 10～100Hz.
3. after straight drive blower impedance hardware-in-the-loop test system run all right, add small signal source or current source, survey
Try the current-responsive situation of straight drive blower impedance hardware-in-the-loop test system.
4. the voltage and current signal obtained according to measurement calculates the resistance value under this frequency.
5. amendment small signal source or the amplitude of current source and frequency, 3.～5. and repeat.
When being embodied as, power electronics real-time simulation platform can include the power electronics real-time simulation platforms such as RT-LAB.
When being embodied as, the analog quantity of real-timedigital simulation model output may include that line voltage, power network current, determines
Sub-voltage, stator current, voltage on line side, net side blocks current, pusher side voltage, pusher side blocks current, DC bus-bar voltage and turn
Rotor speed one of them or combination in any.
When being embodied as, real-timedigital simulation model output digital quantity may include that net side contactor switching signal and/
Or excitation contactor switching signal.
When being embodied as, the digital quantity of real-timedigital simulation mode input may include that net side converter IGBT pulse is believed
Number, pusher side current transformer IGBT pulse signal, net side contactor switching signal and excitation contactor switching signal one of them or appoint
Meaning combination.
As an example, utilize above-mentioned straight drive blower impedance hardware-in-the-loop test system, access certain main flow current transformer domestic and control
The 2.5MW straight drive blower controller of device producer, the impedance computation result obtained under declared working condition as shown in Figure 4, shown in Fig. 4
The straight drive blower impedance waveform of test result.
In sum, in embodiments of the present invention, by building real-timedigital simulation at power electronics real-time simulation platform
Model carries out straight drive blower impedance hardware-in-the-loop test, with the skill that the method for existing employing Theoretical Calculation calculates straight drive blower impedance
Art scheme is compared, and digital simulation model can carry out differentiation design according to different manufacturers, and is not only applicable to the straight of classics
Drive blower model, and consider the links such as in esse filter branch, test result can be made more accurate；And can be anti-
Reflect the impedance conditions of straight drive blower.
Further, in embodiments of the present invention, straight drive blower controller to be measured to Digital Simulation and reality is combined, with existing
The impedance using time-domain-simulation method to measure straight drive blower mathematical model is compared, it is contemplated that the impact of actual straight drive blower controller,
Test process can be made actual closer to engineering, promote the directive significance actual to engineering.
Furthermore, in embodiments of the present invention, build at power electronics real-time simulation platform and include electrical network, for testing impedance
Small signal source or current source, axle system, motor, main circuit of converter, protection circuit and the filter branch of Wind turbines
Real-timedigital simulation model；Real-timedigital simulation model is utilized to carry out straight drive blower impedance hardware-in-the-loop test, it is not necessary in experiment
Physical system is built in room, implements difficulty little, convenient and flexible operation.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the reality in terms of the present invention can use complete hardware embodiment, complete software implementation or combine software and hardware
Execute the form of example.And, the present invention can use at one or more computers wherein including computer usable program code
The upper computer program product implemented of usable storage medium (including but not limited to disk memory, CD-ROM, optical memory etc.)
The form of product.
The present invention is with reference to method, equipment (system) and the flow process of computer program according to embodiments of the present invention
Figure and/or block diagram describe.It should be understood that can the most first-class by computer program instructions flowchart and/or block diagram
Flow process in journey and/or square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
Instruction arrives the processor of general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce
A raw machine so that the instruction performed by the processor of computer or other programmable data processing device is produced for real
The device of the function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame now.
These computer program instructions may be alternatively stored in and computer or other programmable data processing device can be guided with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in this computer-readable memory produces and includes referring to
Make the manufacture of device, this command device realize at one flow process of flow chart or multiple flow process and/or one square frame of block diagram or
The function specified in multiple square frames.
These computer program instructions also can be loaded in computer or other programmable data processing device so that at meter
Perform sequence of operations step on calculation machine or other programmable devices to produce computer implemented process, thus at computer or
The instruction performed on other programmable devices provides for realizing at one flow process of flow chart or multiple flow process and/or block diagram one
The step of the function specified in individual square frame or multiple square frame.
Particular embodiments described above, has been carried out the purpose of the present invention, technical scheme and beneficial effect the most in detail
Describe in detail bright, be it should be understood that the specific embodiment that the foregoing is only the present invention, the guarantor being not intended to limit the present invention
Protect scope, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included in this
Within the protection domain of invention.
Claims (10)
1. a straight drive blower impedance hardware-in-the-loop test system, it is characterised in that including:
Power electronics real-time simulation platform, described power electronics real-time simulation platform has been built and has been included electrical network, for testing impedance
Small signal source or current source, axle system, motor, main circuit of converter, protection circuit and the filter branch of Wind turbines
Real-timedigital simulation model；Described real-timedigital simulation model is downloaded to described power electronics real-time simulation platform after real time implementation
Replicating machine in；
Straight drive blower controller to be measured, by the input/output interface of described replicating machine, enters with described real-timedigital simulation model
Row connects.
2. straight drive blower impedance hardware-in-the-loop test system as claimed in claim 1, it is characterised in that described power electronics is real
Time emulation platform include RT-LAB.
3. straight drive blower impedance hardware-in-the-loop test system as claimed in claim 1 or 2, it is characterised in that described real-time number
The analog quantity of word phantom output includes: line voltage, power network current, stator voltage, stator current, voltage on line side, net side
Blocks current, pusher side voltage, pusher side blocks current, DC bus-bar voltage and rotor speed one of them or combination in any.
4. straight drive blower impedance hardware-in-the-loop test system as claimed in claim 1 or 2, it is characterised in that described real-time number
The digital quantity of word phantom output includes: net side contactor switching signal and/or excitation contactor switching signal.
5. straight drive blower impedance hardware-in-the-loop test system as claimed in claim 1 or 2, it is characterised in that described real-time number
The digital quantity of word phantom input includes: net side converter IGBT pulse signal, pusher side current transformer IGBT pulse signal, net side
Catalyst switching signal and excitation contactor switching signal one of them or combination in any.
6. a straight drive blower impedance hardware-in-the-loop test method, it is characterised in that including:
Build at power electronics real-time simulation platform and include electrical network, for the small signal source of testing impedance or current source, wind
The real-timedigital simulation model of axle system, motor, main circuit of converter, protection circuit and the filter branch of group of motors；
The replicating machine of described power electronics real-time simulation platform will be downloaded to after described real-timedigital simulation model real time implementation；
Straight drive blower controller to be measured is entered with described real-timedigital simulation model by the input/output interface of described replicating machine
Row connects；
Small signal source or the amplitude of current source and frequency are set, test straight drive blower voltage and current signal, according to test
Gained straight drive blower voltage and current signal, calculates the straight drive blower impedance under this frequency；
Revise small signal source or the amplitude of current source and frequency, repeat above-mentioned test straight drive blower voltage and current signal also
Calculate the process of straight drive blower impedance under this frequency.
7. straight drive blower impedance hardware-in-the-loop test method as claimed in claim 6, it is characterised in that described power electronics is real
Time emulation platform include RT-LAB.
Straight drive blower impedance hardware-in-the-loop test method the most as claimed in claims 6 or 7, it is characterised in that described real-time number
The analog quantity of word phantom output includes: line voltage, power network current, stator voltage, stator current, voltage on line side, net side
Blocks current, pusher side voltage, pusher side blocks current, DC bus-bar voltage and rotor speed one of them or combination in any.
Straight drive blower impedance hardware-in-the-loop test method the most as claimed in claims 6 or 7, it is characterised in that described real-time number
The digital quantity of word phantom output includes: net side contactor switching signal and/or excitation contactor switching signal.
Straight drive blower impedance hardware-in-the-loop test method the most as claimed in claims 6 or 7, it is characterised in that described real-time number
The digital quantity of word phantom input includes: net side converter IGBT pulse signal, pusher side current transformer IGBT pulse signal, net side
Catalyst switching signal and excitation contactor switching signal one of them or combination in any.
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| CN107621787A (en) * | 2017-08-18 | 2018-01-23 | 海南电网有限责任公司电力科学研究院 | Low pressure APF hardware-in-the-loop test method and systems based on RT LAB |
| CN108631358A (en) * | 2018-03-30 | 2018-10-09 | 中国电力科学研究院有限公司 | Method and apparatus are determined based on the directly driven wind-powered unit impedance of control hardware in loop |
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| CN105549420A (en) * | 2015-12-22 | 2016-05-04 | 南京南瑞集团公司 | Real-time simulation test method of direct-driving draught-fan variable flow control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107621787A (en) * | 2017-08-18 | 2018-01-23 | 海南电网有限责任公司电力科学研究院 | Low pressure APF hardware-in-the-loop test method and systems based on RT LAB |
| CN108631358A (en) * | 2018-03-30 | 2018-10-09 | 中国电力科学研究院有限公司 | Method and apparatus are determined based on the directly driven wind-powered unit impedance of control hardware in loop |
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