CN208902817U - The test platform of current transformer - Google Patents
The test platform of current transformer Download PDFInfo
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- CN208902817U CN208902817U CN201821697794.1U CN201821697794U CN208902817U CN 208902817 U CN208902817 U CN 208902817U CN 201821697794 U CN201821697794 U CN 201821697794U CN 208902817 U CN208902817 U CN 208902817U
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Abstract
The embodiment of the present application provides a kind of test platform of current transformer, for testing inverter controller, comprising: current transformer monitors debugging system and real-time digital simulator；Current transformer circulation test model has been built in real-time digital simulator in advance；Current transformer monitors debugging system and inverter controller communication connection；Inverter controller and real-time digital simulator communication connection, real-time digital simulator is used to the switch state signal of current transformer circulation test model and analog signals being sent to inverter controller, and receives inverter controller and send control instruction to current transformer circulation test model.The embodiment of the present application is by testing inverter controller; and then it realizes to the basic function of current transformer, control algolithm, the complete detection of failsafe characteristics; more convenient and fast means of testing is provided for the research and development of novel current transformer, and then improves the efficiency of research and development of current transformer.
Description
Technical field
This application involves converter topology fields, specifically, this application involves a kind of test platforms of current transformer.
Background technique
To meet the requirement that current transformer scene is put into operation, topological structure and field application operating condition according to current transformer are needed, is taken
Test platform is built to detect the various performance indicators of current transformer.At present circulation test platform be current transformer mainstream test platform it
One, its main feature is that replacing wind power generating set by transformer, carries corresponding current transformer and tested.
The inventors of the present application found that existing in flexibility and owing currently, the preliminary preparation of circulation test platform is cumbersome
It lacks, the Curve guide impeller to inverter controller under different scenes and parameter tuning can not test in real time.
Utility model content
The application is directed to the shortcomings that existing way, proposes a kind of test platform of current transformer, surveys to solve the prior art
Trying platform, that there are flexibilities is poor, and the technical issues of can not be tested for inverter controller under different scenes.
First aspect, the embodiment of the present application provide a kind of test platform of current transformer, for inverter controller
It is tested, comprising: current transformer monitors debugging system and real-time digital simulator；It has been built in advance in real-time digital simulator
Current transformer circulation test model；
Current transformer monitors debugging system and inverter controller communication connection；
Inverter controller and real-time digital simulator communication connection, real-time digital simulator is for surveying current transformer circulation
The switch state signal and analog signals of die trial type are sent to inverter controller, and receive inverter controller to unsteady flow
The control instruction that device circulation test model is sent.
In the embodiment of the application, current transformer monitor between debugging system and inverter controller through Ethernet and
Interchanger communication connection.
Inverter controller is provided with digital output interface, digital input interface and simulation input interface；
Real-time digital simulator is provided with digital output card, digital input card and analog output card；
Digital output interface, digital input interface and simulation input interface respectively correspond and digital input card, number
Measure output board card and analog output card communication connection.
In the embodiment of the application, digital output interface, digital input interface and simulation input interface, respectively with number
It is connected between word amount input card, digital output card and analog output card using conducting wire.
In the embodiment of the application, current transformer circulation test model includes power grid, breaker, the first transformer, becomes
Flow device major loop, the first reactor, the second transformer；
Power grid, breaker, the first transformer, current transformer major loop, the first reactor and the second transformer are successively electrically connected
It connects, and the other end of the second transformer is connected between the first transformer and current transformer major loop.
In the embodiment of the application, current transformer major loop includes first switch, second switch, third switch, capacitor
Device, the second reactor, converter module, third reactor and the 5th switch；
First switch, the second reactor, converter module, third reactor and the 5th switch are sequentially connected in series；
Second switch is connected in parallel with first switch；
One end of capacitor is connected to the node between first switch and the second reactor, and the other end is connect with ground terminal.
In the embodiment of the application, converter module includes the grid-side converter being sequentially connected electrically, brake circuit, puts
Electrical circuit and generator-side converter wear；
Grid-side converter is electrically connected with the second reactor, and generator-side converter wear is electrically connected with third reactor.
In the embodiment of the application, the quantity and the number of windings phase of current transformer of the first reactor and the second transformer
Match.
Technical solution bring advantageous effects provided by the embodiments of the present application are:
The application by building current transformer circulation test model in advance in real-time digital simulator, then with current transformer control
Device processed carries out data interaction, and cooperates current transformer monitoring debugging system that emulation is made to form organic whole with test, due to
The test platform of the current transformer of the embodiment of the present application is for testing inverter controller, inverter controller and in real time number
Word emulating instrument communication connection, real-time digital simulator are used for the switch state signal of current transformer circulation test model and simulation
Amount signal is sent to inverter controller, and receives inverter controller and refer to the control that current transformer circulation test model is sent
It enables, therefore by the test to inverter controller, the basic function, control algolithm, error protection to current transformer may be implemented
Characteristic carries out complete detection, and then provides more convenient and fast means of testing for the research and development of novel current transformer, can shorten current transformer
The test period of In-Plant Test, improve efficiency of research and development, and can test early detection current transformer there are the problem of, preferably finger
Lead equipment research and development；And current transformer circulation test model can change application scenarios in real time in the embodiment of the present application, so that current transformer
Test platform flexibly inverter controller under different scenes can be tested.
The additional aspect of the application and advantage will be set forth in part in the description, these will become from the following description
It obtains obviously, or recognized by the practice of the application.
Detailed description of the invention
The application is above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is a kind of overall structure diagram of the test platform of current transformer provided by the embodiments of the present application；
Fig. 2 is a kind of block schematic illustration of current transformer circulation test model provided by the embodiments of the present application；
Fig. 3 is a kind of frame signal of current transformer circulation test model of clipped module provided by the embodiments of the present application
Figure.
Specific embodiment
The application is described below in detail, the example of embodiments herein is shown in the accompanying drawings, wherein identical from beginning to end
Or similar label indicates same or similar component or component with the same or similar functions.In addition, if known technology
Detailed description the application shown is characterized in unnecessary, then omit it.Below with reference to attached drawing description
Embodiment is exemplary, and is only used for explaining the application, and cannot be construed to the limitation to the application.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term), there is meaning identical with the general understanding of those of ordinary skill in the application fields.Should also
Understand, those terms such as defined in the general dictionary, it should be understood that have in the context of the prior art
The consistent meaning of meaning, and unless idealization or meaning too formal otherwise will not be used by specific definitions as here
To explain.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singular " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that being arranged used in the description of the present application
Diction " comprising " refer to that there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition
Other one or more features, integer, step, operation, element, component and/or their group.It should be understood that when we claim member
Part is " connected " or when " coupled " to another element, it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " may include being wirelessly connected or wirelessly coupling.It is used herein to arrange
Diction "and/or" includes one or more associated wholes for listing item or any cell and all combinations.
How the technical solution of the application and the technical solution of the application are solved with specifically embodiment below above-mentioned
Technical problem is described in detail.
The embodiment of the present application provides a kind of test platform of current transformer, for testing inverter controller 102,
The structural schematic diagram of the test platform of the current transformer is as shown in Figure 1, comprising:
Current transformer monitors debugging system 101 and real-time digital simulator 103；It is taken in advance in real-time digital simulator 103
Have current transformer circulation test model；
Current transformer monitors debugging system 101 and 102 communication connection of inverter controller；
Inverter controller 102 and 103 communication connection of real-time digital simulator, real-time digital simulator 103 will be for that will become
The switch state signal and analog signals for flowing device circulation test model are sent to inverter controller 102, and receive unsteady flow
The control instruction that device controller 102 is sent to current transformer circulation test model.
For example, as shown in Figure 1, current transformer monitoring debugging system 101 can be installed in computer, and current transformer monitors
It can be realized between the two by Ethernet and interchanger communication connection between debugging system 101 and inverter controller 102
Real time data interaction.Such as wired or wirelessly communication connection can be passed through between the two.But the embodiment of the present application
Specific connection type between the two is not limited, those skilled in the art can voluntarily select connection side according to actual condition
Formula.
Current transformer has been built in advance in real-time digital simulator (Real Time Digtal Simulator, RTDS) 103
Circulation test model；Inverter controller 102 and 103 communication connection of real-time digital simulator, real-time digital simulator 103 are used for
The switch state signal of current transformer circulation test model and analog signals are sent to inverter controller 102, and received
The control instruction that inverter controller 102 is sent to current transformer circulation test model.Inverter controller 102 can be using practical
Current transformer control framework, and use physical controller, carry circulation test program.It should be noted that, the application is implemented herein
Example does not limit the concrete type of real-time digital simulator, can use a plurality of types of real-time digital simulator types, in
This is repeated no more.
The application by using building current transformer circulation test model, inverter controller in advance in real-time digital simulator
Debugging system communication connection is monitored with real-time digital simulator and current transformer respectively.The excellent of Real-time Simulation Technology can be given full play to
Gesture interconnects current transformer circulation test model and inverter controller, in current transformer R&D process by controlling current transformer
And the test of control strategy provides more so that current-variable controller and strategy agree with current transformer hardware perfection for current transformer
The testing process for sticking on nearly practical circulation system, is particularly suitable for before actual rings current test to the contained operation journey of inverter controller
The research of the l-G simulation test of sequence and its hardware.
The application will emulate and form organic whole with test, and the base to current transformer may be implemented according to Its Relevant Technology Standards
This function, control algolithm, failsafe characteristics carry out complete detection, provide more convenient and fast survey for the research and development of novel current transformer
Trial work section can shorten the test period of current transformer In-Plant Test, improve efficiency of research and development, and can be in test early detection current transformer
There are the problem of, preferably guidance equipment research and development.
In the embodiment of the application, inverter controller 102 be provided with digital output interface, digital input interface and
Simulation input interface；Real-time digital simulator 103 is provided with digital output card, digital input card and analog output
Board；Digital output interface, digital input interface and simulation input interface respectively correspond and digital input card, digital quantity
Output board card and analog output card communication connection.
As shown in Figure 1, optionally, inverter controller is provided with digital output interface (Digital Output, DO), number
Word input interface (Digital Input, DI) and simulation input interface (Analogy Input, AI)；Real-time digital simulator
103 are provided with digital output card (Gigabit Transceiver Digital Output Card, GTDO), digital quantity
Input card (Gigabit Transceiver Digital Input Card, GTDI) and analog output card (Gigabit
Transceiver Analogy Output Card, GTAO)；Digital output interface DO, digital input interface DI and simulation input
Interface AI is communicated with digital input card GTDI, digital output card GTDO and analog output card GTAO connect respectively
It connects.By above-mentioned connection type, real-time digital simulator 103 is by the switch state signal of current transformer circulation test model and simulation
Signal is exported to inverter controller 102, while receiving the switch control signal and pulse width of the output of inverter controller 102
Modulated signal.
Optionally, real-time digital simulator 103 can include at least a cabinet bracket (RACK), several real-time digitals are imitated
The true dedicated digital input card of instrument (Gigabit Transceiver Digital Input Card, GTDI), one piece of reality
When Digital Simulation instrument dedicated digital output card (Gigabit Transceiver Digital Output Card,
GTDO), several real-time digital simulator die for special purpose analog quantity output board card (Gigabit Transceiver Analogy Output
Card, GTAO).
The converter switches control signal and pulse that GTDI in the embodiment of the present application is used to export inverter controller
The signal of width modulated is sent to current transformer circulation test model；GTDO is used for the switch shape for feeding back current transformer circulation test model
State signal is sent to inverter controller；GTAO is used to send the analog signals of current transformer circulation test model to current transformer and control
Device.It should be noted that the application is not limited thereto, those skilled in the art can be according to the type of real-time digital simulator
Carry out option board Card Type.
In the embodiment of the application, digital output interface, digital input interface and simulation input interface, respectively with number
It is connected between word amount input card, digital output card and analog output card using conducting wire.Use conducting wire connection can be with
Effectively ensure the transmission of signal, improves the reliability and stability of the application connection.
In the embodiment of the application, as shown in Fig. 2, current transformer circulation test model includes power grid, breaker, first
Transformer, current transformer major loop, the first reactor, the second transformer；Power grid, breaker, the first transformer, current transformer master return
Road, the first reactor and the second transformer are sequentially connected electrically, and the other end of the second transformer be connected to the first transformer with
Between current transformer major loop.
When practical application, electricity is taken from power grid first, and electric energy is sent through breaker to the first transformer, and the first transformer is by electric energy
It send to current transformer major loop；Current transformer major loop send the three-phase alternating current that inversion exports to the first reactor, the first reactor
Three-phase alternating current is filtered, filtered three-phase alternating current is sent through the second transformer to the first transformer.Thus the application
The entire test macro of current transformer circulation test model form circulation circuit, power not feed-in power grid, breaker is for controlling electricity
The division of net and circulation circuit.
In the embodiment of the application, as shown in figure 3, current transformer major loop includes first switch, second switch, third
Switch, capacitor, the second reactor, converter module, third reactor and the 5th switch；First switch, the second reactor,
Converter module, third reactor and the 5th switch are sequentially connected in series；Second switch is connected in parallel with first switch；Capacitor
One end be connected to the node between first switch and the second reactor, the other end is connect with ground terminal.
Further, converter module includes the grid-side converter being sequentially connected electrically, brake circuit, discharge loop and machine
Side current transformer；Grid-side converter is electrically connected with the second reactor, and generator-side converter wear is electrically connected with third reactor.
Specifically, in conjunction with shown in Fig. 1 and Fig. 3, current transformer circulation test model is based on real-time digital simulator 103 and takes
It builds, real-time digital simulator can be according to current transformer power grid environment, converter topology, inverter type, control logic, different simulations
Amount acquisition signal carries out flexible programming.When carrying out the current transformer circulation emulation testing of different type, different topology structure, only need
The control circuit for changing current transformer major loop, switch, keeps it consistent with true current transformer.Therefore the embodiment of the present application is not only flexible
Property is stronger, but also may be implemented to become under the current transformer to different voltages grade, different topology structure and different scenes in real time
The Curve guide impeller and parameter tuning of stream device control are tested.
It should be noted that the application does not limit the topological structure of current transformer circulation test model, such as some other
Embodiment in, current transformer circulation test model can be chosen according to actual set type, and double PWM converter moulds such as can be used
Type can also use the PWM converter (i.e. uncontrollable rectifier+Boost+PWM of uncontrollable rectifier combination Boost (boost chopper)
Current transformer), therefore the application is not limited thereto.
Optionally, when current transformer voltage class difference to be measured, can be cooperated by the first transformer and the second transformer,
So that voltage adjusted is met the requirement of current transformer voltage class, further improves the flexibility and applicability of the application.
As shown in Fig. 2, in the present embodiment, real-time digital simulator 103 can be by GTDI board from inverter controller
102 obtain the control signal of switch, so that the control circuit to control switch may be implemented to own in current transformer major loop
Switch is controlled；Real-time digital simulator 103 can export the status signal switched to current transformer by GTDO board simultaneously
Controller 102.
In the embodiment of the application, as shown in Fig. 2, the first transformer, current transformer major loop, the first reactor and
Second transformer is established in small step-length model, and power grid and the first breaker are established in big step-length model.Wherein small step-length mould
The step-length of type is 2 microseconds, and the step-length of big step-length model is 50 microseconds.It can be designed so that the embodiment of the present application control using this
That makes is finer, improves the test effect of the embodiment of the present application.
As shown in figure 3, in the embodiment of the application, the second reactor, capacitor and the first transformer composition the
One filter, first filter are used to filter out the harmonic wave of grid-side converter inversion generation.Third reactor, the first reactor and
The equivalent reactance and capacitor of two transformers, the first transformer form second filter, and second filter is for filtering out pusher side change
Flow the harmonic wave that device generates.First filter and second filter may each be LCL filter, but the application not as
Limit.
In the embodiment of the application, the quantity and the number of windings phase of current transformer of the first reactor and the second transformer
Match.The applicability and flexibility that the application can be effectively improved using above-mentioned setting, further improve the scope of application of the application.
In the embodiment of the application, in conjunction with referring to figs. 1 to Fig. 3, inverter controller 102 and current transformer test model
Between be formed with a plurality of communication data stream, and a plurality of communication data flow direction is that unidirectional and its communication modes are logical for number
News.Wherein the first data flow D1 and the second data flow D2 passes through the progress signal transmission of GTDI board.First data flow D1 be from
Inverter controller 102 flows to real-time digital simulator 103, and communication main signal is the control signal of switch, including first opens
The control signal that pass, second switch, third switch, the 4th switch and the 5th switch.
Second data flow D2 is that real-time digital simulator 103 is flowed to from inverter controller 102, and communication main signal is to use
In control grid-side converter, generator-side converter wear, brake circuit pulse signal.
Third data flow D3 is inverter controller 102 to be flowed to from real-time digital simulator 103, and third data flow passes through
GTDO board carries out signal transmission.Communication main signal is switch state signal, including first switch, second switch, third are opened
The status signal of pass, the 4th switch and the 5th switch.
4th data flow D4 is inverter controller 102 to be flowed to from real-time digital simulator 103, and the 4th data flow passes through
GTAO board carries out signal transmission.Communication main signal is the analog signals that flows device controller and need to detect, including net side A phase electricity
Pressure, net side B phase voltage, net side C phase voltage, net side IGBT A phase current, net side IGBT B phase current, net side IGBT C phase electricity
Stream, capacitor branches A phase current, capacitor branches B phase current, capacitor branches C phase current, brake circuit electric current, direct current
Pressure, pusher side A phase voltage, pusher side B phase voltage, pusher side C phase voltage, pusher side IGBT A phase current, pusher side IGBT B phase current, pusher side
IGBT C phase current.
It should be noted that the above communication signal is fundamental quantity needed for realizing the embodiment of the present application, in some other realities
It applies in example, it may be necessary to which extension increases other communication signals, therefore the application is not limited thereto.
Using the embodiment of the present application, at least can be realized it is following the utility model has the advantages that
The application by using building current transformer circulation test model, inverter controller in advance in real-time digital simulator
Debugging system communication connection is monitored with real-time digital simulator and current transformer respectively.By to current transformer control and control strategy
Test can give full play to Real-time Simulation Technology so that current-variable controller and strategy agree with current transformer hardware perfection
Current transformer circulation test model and inverter controller are interconnected, are provided more for current transformer in current transformer R&D process by advantage
The testing process for sticking on nearly practical circulation system, is particularly suitable for before actual rings current test to the contained operation journey of inverter controller
The research of the l-G simulation test of sequence and its hardware.
Further, current transformer test platform provided by the present application can be identical as practical current transformer circulation operating condition, can
It realizes real-time current transformer circulation test, provides more convenient and fast means of testing for the exploitation of novel current transformer.The application can be with
It realizes by modification any node, any loop voltage, the sampled value of electric current, so that it is collected to influence inverter controller
Voltage, current signal realize current transformer voltage, electric current, frequency class fault test, such as over-voltage, under-voltage, overcurrent, frequency height, frequency
Low failure, therefore the application may be implemented to test the current transformer of the full specification of total power.In addition the application also achieves pair
The flexible control of switch provides basis etc. for inverter controller basic function, the test of Switch error protection.
Term " first ", " second " be used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or
Implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or imply
Ground includes one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two
It is a or more than two.
In the description of the present application, it should be noted that unless otherwise clearly defined and limited, term " connection " should be done
It broadly understood, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be directly connected,
The connection inside two elements can also be can be indirectly connected through an intermediary.For those of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
The above is only some embodiments of the application, it is noted that for the ordinary skill people of the art
For member, under the premise of not departing from the application principle, several improvements and modifications can also be made, these improvements and modifications are also answered
It is considered as the protection scope of the application.
Claims (8)
1. a kind of test platform of current transformer, for testing inverter controller (102), which is characterized in that the change
The test platform of stream device includes: current transformer monitoring debugging system (101) and real-time digital simulator (103)；The real-time number
Current transformer circulation test model has been built in word emulating instrument (103) in advance；
Current transformer monitoring debugging system (101) and the inverter controller (102) communication connection；
The inverter controller (102) and the real-time digital simulator (103) communication connection, the real-time digital simulator
(103) for the switch state signal of the current transformer circulation test model and analog signals to be sent to the current transformer
Controller (102), and the control for receiving the transmission of the inverter controller (102) Xiang Suoshu current transformer circulation test model refers to
It enables.
2. the test platform of current transformer as described in claim 1, which is characterized in that the current transformer monitors debugging system
(101) pass through Ethernet and interchanger communication connection between the inverter controller (102).
3. the test platform of current transformer as described in claim 1, which is characterized in that inverter controller (102) setting
There are digital output interface, digital input interface and simulation input interface；
The real-time digital simulator (103) is provided with digital output card, digital input card and analog output
Card；
The digital output interface, the digital input interface and the simulation input interface, respectively correspond and the digital quantity
Input card, the digital output card and the analog output card communication connection.
4. the test platform of current transformer as claimed in claim 3, which is characterized in that the digital output interface, the number
Input interface and the simulation input interface, respectively with the digital input card, the digital output card and described
It is connected between analog output card using conducting wire.
5. the test platform of current transformer according to any one of claims 1 to 4, which is characterized in that the current transformer ring
Current test model includes power grid, breaker, the first transformer, current transformer major loop, the first reactor, the second transformer；
The power grid, breaker, the first transformer, current transformer major loop, the first reactor and the second transformer are successively electrically connected
It connects, and the other end of second transformer is connected between first transformer and the current transformer major loop.
6. the test platform of current transformer as claimed in claim 5, which is characterized in that the current transformer major loop is opened including first
Pass, second switch, third switch, capacitor, the second reactor, converter module, third reactor and the 5th switch；
The first switch, second reactor, the converter module, the third reactor and it is described 5th switch according to
Secondary series connection；
The second switch is connected in parallel with the first switch；
One end of the capacitor is connected to the node between the first switch and second reactor, the other end and ground connection
End connection.
7. the test platform of current transformer as claimed in claim 6, which is characterized in that the converter module includes successively being electrically connected
Grid-side converter, brake circuit, discharge loop and the generator-side converter wear connect；
The grid-side converter is electrically connected with second reactor, and the generator-side converter wear is electrically connected with the third reactor
It connects.
8. the test platform of current transformer as claimed in claim 6, which is characterized in that first reactor and second change
The quantity of depressor and the number of windings of current transformer match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821697794.1U CN208902817U (en) | 2018-10-18 | 2018-10-18 | The test platform of current transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821697794.1U CN208902817U (en) | 2018-10-18 | 2018-10-18 | The test platform of current transformer |
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| CN208902817U true CN208902817U (en) | 2019-05-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110673508A (en) * | 2019-09-02 | 2020-01-10 | 南方电网科学研究院有限责任公司 | Method and device for building closed loop test platform suitable for various scenes |
| CN111722037A (en) * | 2020-06-11 | 2020-09-29 | 天津瑞能电气有限公司 | Single-phase cascade converter test platform |
-
2018
- 2018-10-18 CN CN201821697794.1U patent/CN208902817U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110673508A (en) * | 2019-09-02 | 2020-01-10 | 南方电网科学研究院有限责任公司 | Method and device for building closed loop test platform suitable for various scenes |
| CN110673508B (en) * | 2019-09-02 | 2023-04-14 | 南方电网科学研究院有限责任公司 | Method and device for building closed-loop test platform suitable for multiple scenes |
| CN111722037A (en) * | 2020-06-11 | 2020-09-29 | 天津瑞能电气有限公司 | Single-phase cascade converter test platform |
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