CN205898852U - System takes place for base mark signal - Google Patents
System takes place for base mark signal Download PDFInfo
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- CN205898852U CN205898852U CN201620885531.8U CN201620885531U CN205898852U CN 205898852 U CN205898852 U CN 205898852U CN 201620885531 U CN201620885531 U CN 201620885531U CN 205898852 U CN205898852 U CN 205898852U
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Abstract
The utility model discloses a system takes place for base mark signal for improve the accuracy of output signal amplitude, phase place and frequency, realize test and the calibration about the measurement to merging cells. System takes place for base mark signal includes: digital control module, digital analog conversion module, power amplifier module and feedback module, wherein, digital control module for base mark signal's waveform parameter is waited to generate in the receipt, according to the waveform parameter who waits to generate base mark signal, confirms to wait to generate base mark signal's signal value, and treats the waveform parameter who generates base mark signal according to the output signal that feedback module feeds back and revise, the digital analog conversion module for to wait that the signal value that generates base mark signal converts analog signal into, power amplifier module for send to being surveyed merging cells after enlargeing analog signal, feedback module for collection power amplifier module's output signal, and the output signal that will gather feeds back the module to digital control.
Description
Technical field
This utility model is related to combining unit calibration technology field, more particularly, to a kind of benchmark for combining unit verification
Signal generating system.
Background technology
Build the expansion of scope and going deep into of traditional intelligent substationization transformation with intelligent substation, in transformer station
Intelligent device is increasing, and based on the utilization of new technique, traditional debugging method can not meet requirement, to intelligent equipment
Debugging and detection it is also proposed new requirement.
In transformer station process layer, combining unit is as the important smart electronicses obtaining power system electric current and voltage
Equipment (intelligent electronic device, ied), carries secondary equipment in power system front end data acquisition, conjunction
And, the critical function of conversion, therefore the Validity Test of the function to combining unit and performance, become intelligent substation test job
An important step, the test of combining unit is also seemed and becomes more and more important.
Traditional combining unit check system, namely traditional reference signal generation system, as shown in Figure 1, comprising: calculate
Machine 102, digital control module 104, D/A converter module 106, power amplifier 108 and tested combining unit 110, are calculating
The waveform parameter of reference signal to be generated is inputted, the ripple according to reference signal to be generated in digital control module 104 in machine 102
Shape parameter calculates the signal value of reference signal to be generated, and by the signal of reference signal to be generated in D/A converter module 106
Value is converted to analogue signal, then the analogue signal of generation is sent after power amplifier 108 amplifies single to tested merging
Unit 110 is tested.
Although traditional reference signal occurs system can produce the examination of the relay protection including power frequency and each harmonic
Test signal, but it is that open cycle system compensates with automatic it is impossible to automatically calibrate that reference signal occurs system, the amplitude of output signal,
Phase and frequency precision is relatively low, for example: can be more than 0.5% it is impossible to complete the survey about metering for the combining unit on amplitude error
Examination and calibration.
In sum, in prior art there is system it is impossible to calibrate to output signal in the reference signal of open-loop design
And compensation, the amplitude of output signal, phase and frequency precision relatively low it is impossible to complete combining unit about metering test and school
Accurate.
Utility model content
This utility model embodiment provides a kind of reference signal and system occurs, in order to improve output signal amplitude, phase place
With the degree of accuracy of frequency, realize the test measured relevant to combining unit and calibration.
There is system in a kind of reference signal that this utility model embodiment provides, this system includes: digital control module, number
Mould modular converter, power amplifier module and feedback module；Wherein, described digital control module, for receiving base to be generated
The waveform parameter of calibration signal, according to the waveform parameter of described reference signal to be generated, determines the signal value of reference signal to be generated,
And according to the output signal of described feedback module feedback, the waveform parameter of described reference signal to be generated is modified；Described number
Mould modular converter, is electrically connected with described digital control module, for the signal value of described reference signal to be generated is converted to mould
Intend signal；Described power amplifier module, is electrically connected with described D/A converter module, after amplifying described analogue signal
Send to tested combining unit；Described feedback module, be connected to described power amplifier module and described digital control module it
Between, for gathering the output signal of described power amplifier module, and the output signal collecting is fed back to described numeral control
Molding block.
In the said system that this utility model embodiment provides, connect between power amplifier module and digital control module
Reversed feedback module composition closed loop system, gathers the output signal of power amplifier module by feedback module, and collection is defeated
Go out signal and feed back to digital control module so that digital control module can be according to the output signal receiving to benchmark to be generated
The waveform parameter of signal is modified, and realizes the benchmark of open-loop design in the compensation to output signal and calibration, with prior art
, it is impossible to be calibrated and compensated for output signal, the amplitude of output signal, phase and frequency precision are compared with low phase for signal generating system
This utility model embodiment improves the degree of accuracy of output signal amplitude, phase and frequency such that it is able to complete combining unit to ratio
Test about metering and calibration.
In a kind of possible embodiment, in the said system that this utility model embodiment provides, described digital control
Module, comprising: field programmable gate array (field-programmable gate array, fpga), comparator with
And PID (proportion integral derivative, pid) controller；Wherein, described fpga, for right
The output signal of described feedback module feedback is demodulated, and determines the waveform parameter of described output signal；Described comparator, with institute
State fpga electrical connection, for being compared the waveform parameter of the waveform parameter of described output signal and described reference signal to be generated
Relatively, determine the difference between the waveform parameter of described output signal and the waveform parameter of described reference signal to be generated；Described pid
Controller, is electrically connected with described comparator, for described difference is converted to correction value, using described correction value to described to be generated
The waveform parameter becoming reference signal is modified.
In a kind of possible embodiment, in the said system that this utility model embodiment provides, described feedback module,
Including: voltage transformation module, Signal-regulated kinase and analog-to-digital conversion module；Wherein, described voltage transformation module, with described work(
Rate amplifier module electrically connects, for gathering the output signal of described power amplifier module, and the electricity by described output signal
Pressure is transformed in the range of default range；Described Signal-regulated kinase, is electrically connected with described voltage transformation module, for described electricity
The output signal of pressure modular converter is filtered processing；Described analog-to-digital conversion module, is electrically connected with described Signal-regulated kinase, uses
Sample in the output signal to described Signal-regulated kinase, and the signal value that obtains of sampling is sent to described digital control
Module.
In a kind of possible embodiment, in the said system that this utility model embodiment provides, described voltage conversion
Module includes following any one or a combination thereof: diverter, current transformer (current transformer, ct) and sieve
Family name's coil.
In a kind of possible embodiment, in the said system that this utility model embodiment provides, described signal condition
Module, comprising: analogue signal wave filter and operational amplifier.
In a kind of possible embodiment, in the said system that this utility model embodiment provides, described analog digital conversion
Module, comprising: A-D converter and its drive circuit.
In a kind of possible embodiment, in the said system that this utility model embodiment provides, described digital-to-analogue conversion
Module, comprising: digital to analog converter and its drive circuit.
Brief description
Fig. 1 is the structural representation that in prior art, reference signal occurs system；
There is the structural representation of system for a kind of reference signal that this utility model embodiment provides in Fig. 2；
There is the structural representation of system for another kind of reference signal that this utility model embodiment provides in Fig. 3.
Specific embodiment
Below in conjunction with the accompanying drawings, a kind of reference signal that this utility model embodiment provides is occurred with the specific embodiment party of system
Formula is described in detail.
System, as shown in Fig. 2 this system includes in a kind of reference signal that this utility model embodiment provides: numeral there is
Control module 202, D/A converter module 204, power amplifier module 206 and feedback module 208；Wherein, digital control mould
Block 202, for receiving the waveform parameter of reference signal to be generated, according to the waveform parameter of reference signal to be generated, determines to be generated
Become the signal value of reference signal, and the waveform parameter to reference signal to be generated for the output signal according to feedback module 208 feedback
It is modified；D/A converter module 204, is electrically connected with digital control module 202, for by the signal value of reference signal to be generated
Be converted to analogue signal；Power amplifier module 206, is electrically connected with D/A converter module 204, for analogue signal is amplified it
After send to tested combining unit；Feedback module 208, be connected to power amplifier module 206 and digital control module 202 it
Between, for gathering the output signal of power amplifier module, and the output signal collecting is fed back to digital control module
202.
In this utility model embodiment, digital control module 202 can be connected with computer or other smart machine,
Pass through the waveform parameter of the reference signal to be generated of computer or other smart machine input, digital-to-analogue conversion mould with receive user
Block 204, comprising: digital to analog converter and its drive circuit, wherein, digital to analog converter can adopt 20 high accuracy digital-to-analogue conversions
Device, the waveform parameter of signal to be generated, comprising: the amplitude information of the fundamental wave of reference signal to be generated, m-Acetyl chlorophosphonazo and m-Acetyl chlorophosphonazo,
Frequency information and phase information.
What deserves to be explained is, this utility model embodiment intermediate power amplifier module 206 includes voltage amplifier and electric current
Amplifier, the analogue signal for exporting D/A converter module 204 is converted in the range of setting range, this setting range ability
Depending on requirement according to reference signal to be generated, for example: D/A converter module 204 exports the mould that analogue signal is ± below 12v
Intend signal, predetermined range ability is ± 48v, then can enter by right ± less than 12 analogue signal of power amplifier module 206
Row amplifies, and analogue signal is enlarged into the analogue signal of ± below 48v.When being embodied as, power amplifier module 204 can wrap
Include No. 4 voltage amplifiers and 6 road current amplifiers, to realize the synchronism output of multichannel voltage or electric current.
In the system that this utility model embodiment provides, between power amplifier module 206 and digital control module 202
Connect feedback module 208 and constitute closed loop system, gather the output signal of power amplifier module by feedback module 208, and will
The output signal of collection feeds back to digital control module 202 so that digital control module 202 can be according to the output letter receiving
Number the waveform parameter of reference signal to be generated is modified, realizes in the compensation and calibration, with prior art of output signal
There is system it is impossible to be calibrated and compensated for output signal in the reference signal of open-loop design, the amplitude of output signal, phase place and
Frequency accuracy is relatively low to be compared, and this utility model embodiment improves the degree of accuracy of output signal amplitude, phase and frequency, so as to
Enough complete combining unit about metering test and calibration, high-precision verification can be carried out to the combining unit of intelligent substation
And calibration, meet the requirement of relevant industries standard, and obtain good calibration result.
In a kind of possible embodiment, in the system that this utility model embodiment provides, digital control module 202,
Including: field programmable gate array fpga, comparator and PID pid controller；Wherein, fpga, is used for
The output signal of feedback module 208 feedback is demodulated, determines the waveform parameter of output signal；Comparator, is electrically connected with fpga
Connect, for being compared the waveform parameter of the waveform parameter of output signal and reference signal to be generated, determine output signal
Difference between the waveform parameter of waveform parameter and reference signal to be generated；Pid controller, is electrically connected with comparator, for inciting somebody to action
Difference is converted to correction value, using correction value, the waveform parameter of reference signal to be generated is modified.
When being embodied as, feedback module 208 gathers the output signal of power amplifier module 206, and output signal is anti-
It is fed to digital control module 202, the fpga in digital control module 202 is demodulated to the output signal receiving, and determines defeated
Go out the waveform parameter of signal, concrete demodulation method can adopt method of the prior art, and here is omitted.
After determining the waveform parameter of output signal, by comparator by the waveform parameter of output signal and benchmark to be generated
The waveform parameter of signal is compared, and determines between the waveform parameter of output signal and the waveform parameter of reference signal to be generated
Difference, then by pid controller by the difference between the waveform parameter of the waveform parameter of output signal and reference signal to be generated
Be converted to correction value, using correction value, the waveform parameter of reference signal to be generated be modified.As more specifically implementing
Example it is assumed that in the waveform parameter of reference signal to be generated the value of certain parameter be 5, and this parameter that pid controller is determined
Correction value be 0.1, then using the correction value of this parameter, this parameter is modified, obtaining this parameter revised is
5.1.
More preferably, another kind of reference signal system that this utility model embodiment provides, as shown in Figure 3, comprising: number
Word control module 202, D/A converter module 204, power amplifier module 206 and feedback module 208, wherein, feedback module
208, comprising: voltage transformation module 2082, Signal-regulated kinase 2084 and analog-to-digital conversion module 2086；Wherein, voltage conversion
Module 2082, is electrically connected with power amplifier module 206, for gathering the output signal of power amplifier module 206, and will be defeated
The voltage conversion going out signal is in the range of default range；Signal-regulated kinase 2084, is electrically connected with voltage transformation module 2082, uses
It is filtered processing in the output signal to voltage transformation module 2082；Analog-to-digital conversion module 2086, with Signal-regulated kinase
2084 electrical connections, for sampling to the output signal of Signal-regulated kinase 2084, and the signal value that sampling is obtained sends
To digital control module 202.
When being embodied as, because the output signal of power amplifier module 206 is the analogue signal after amplifying, because
This, after voltage transformation module 2082 collects the analogue signal of power amplifier module 206 output, need to collecting
Analogue signal carries out voltage conversion, in particular it is necessary to carry out high-low voltage conversion to the analogue signal collecting, to reduce mould
The range ability intending signal is easy to transmit it is assumed that the range ability of power amplifier module 206 output signal is ± 48v, then electricity
Pressure modular converter 2082 carries out voltage conversion to it, for example: can convert thereof into range ability is ± 12v.Wherein, voltage turns
Die change block 2082 can be using any one or more in diverter, current transformer ct and Luo-coil.
The analogue signal that Signal-regulated kinase 2084 exports to voltage transformation module 2082 is filtered processing, and will filter
Analogue signal after process sends to analog-to-digital conversion module 2086, by analog-to-digital conversion module 2086, signal is carried out sampling it
Afterwards, export to digital control module 202, wherein, Signal-regulated kinase 2084, comprising: analogue signal wave filter and operation amplifier
Device, analog-to-digital conversion module 2086, comprising: A-D converter and its drive circuit, analog-to-digital conversion module 2086 can adopt high-precision
24 analog-digital converters of degree, to improve the sampling number of every cycle, thus realize to output signal in digital control module 202
Complete and high-quality reproduction, improve the accuracy that the waveform parameter to reference signal to be generated is adjusted.
In sum, there is system in a kind of reference signal that this utility model embodiment provides, by closed loop design so that
According to output signal, the waveform parameter of reference signal to be generated can be modified, realize the compensation to output signal and school
Standard, improve output signal amplitude, phase and frequency degree of accuracy such that it is able to complete combining unit about metering test and
Calibration, can carry out high-precision verification and calibrate, meet the requirement of relevant industries standard to the combining unit of intelligent substation,
And obtain good calibration result.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this practicality to this utility model
New spirit and scope.So, if of the present utility model these modification and modification belong to this utility model claim and
Within the scope of its equivalent technologies, then this utility model is also intended to comprise these changes and modification.
Claims (7)
1. there is system it is characterised in that this system includes in a kind of reference signal:
Digital control module, D/A converter module, power amplifier module and feedback module；Wherein,
Described digital control module, for receiving the waveform parameter of reference signal to be generated, according to described reference signal to be generated
Waveform parameter, determine the signal value of reference signal to be generated, and according to the output signal of described feedback module feedback to described
The waveform parameter of reference signal to be generated is modified；
Described D/A converter module, is electrically connected with described digital control module, for by the signal of described reference signal to be generated
Value is converted to analogue signal；
Described power amplifier module, is electrically connected with described D/A converter module, sends out for after amplifying described analogue signal
Deliver to tested combining unit；
Described feedback module, is connected between described power amplifier module and described digital control module, described for gathering
The output signal of power amplifier module, and the output signal collecting is fed back to described digital control module.
2. system according to claim 1 is it is characterised in that described digital control module, comprising: field programmable logic
Gate array fpga, comparator and PID pid controller；Wherein,
Described fpga, the output signal for feeding back to described feedback module is demodulated, and determines the waveform of described output signal
Parameter；
Described comparator, is electrically connected with described fpga, for by the waveform parameter of described output signal and described benchmark to be generated
The waveform parameter of signal is compared, and determines the waveform parameter of described output signal and the waveform ginseng of described reference signal to be generated
Difference between number；
Described pid controller, is electrically connected with described comparator, for described difference is converted to correction value, using described correction
Value is modified to the waveform parameter of described reference signal to be generated.
3. system according to claim 1 is it is characterised in that described feedback module, comprising:
Voltage transformation module, Signal-regulated kinase and analog-to-digital conversion module；Wherein,
Described voltage transformation module, is electrically connected with described power amplifier module, for gathering described power amplifier module
Output signal, and by the range of the voltage conversion of described output signal to default range；
Described Signal-regulated kinase, is electrically connected with described voltage transformation module, for the output letter to described voltage transformation module
Number it is filtered processing；
Described analog-to-digital conversion module, is electrically connected with described Signal-regulated kinase, for the output letter to described Signal-regulated kinase
Number sampled, and the signal value that sampling is obtained is sent to described digital control module.
4. system according to claim 3 is it is characterised in that described voltage transformation module includes following any one or its
Combination: diverter, current transformer ct and Luo-coil.
5. system according to claim 3 is it is characterised in that described Signal-regulated kinase, comprising: analogue signal wave filter
And operational amplifier.
6. system according to claim 3 is it is characterised in that described analog-to-digital conversion module, comprising: A-D converter and its
Drive circuit.
7. system according to claim 1 is it is characterised in that described D/A converter module, comprising: digital to analog converter and its
Drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620885531.8U CN205898852U (en) | 2016-08-15 | 2016-08-15 | System takes place for base mark signal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620885531.8U CN205898852U (en) | 2016-08-15 | 2016-08-15 | System takes place for base mark signal |
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| CN205898852U true CN205898852U (en) | 2017-01-18 |
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| CN201620885531.8U Withdrawn - After Issue CN205898852U (en) | 2016-08-15 | 2016-08-15 | System takes place for base mark signal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053899A (en) * | 2016-08-15 | 2016-10-26 | 北京博电新力电气股份有限公司 | Reference signal generation system and method |
| CN107589283A (en) * | 2017-11-03 | 2018-01-16 | 国网江苏省电力公司电力科学研究院 | Intelligent transformer substation grounding network potential difference Jamming Signal Simulation waveform generator |
| CN116577536A (en) * | 2023-07-10 | 2023-08-11 | 烟台东方威思顿电气有限公司 | Three-phase alternating current standard source based on waveform-amplitude separation control |
-
2016
- 2016-08-15 CN CN201620885531.8U patent/CN205898852U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053899A (en) * | 2016-08-15 | 2016-10-26 | 北京博电新力电气股份有限公司 | Reference signal generation system and method |
| CN106053899B (en) * | 2016-08-15 | 2018-10-09 | 北京博电新力电气股份有限公司 | A kind of reference signal generating system and method |
| CN107589283A (en) * | 2017-11-03 | 2018-01-16 | 国网江苏省电力公司电力科学研究院 | Intelligent transformer substation grounding network potential difference Jamming Signal Simulation waveform generator |
| CN116577536A (en) * | 2023-07-10 | 2023-08-11 | 烟台东方威思顿电气有限公司 | Three-phase alternating current standard source based on waveform-amplitude separation control |
| CN116577536B (en) * | 2023-07-10 | 2023-09-15 | 烟台东方威思顿电气有限公司 | Three-phase alternating current standard source based on waveform-amplitude separation control |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170118 Effective date of abandoning: 20181009 |