CN108445440A - Dynamic distortion load power source with analog quantity and digital quantity doubleway output - Google Patents
Dynamic distortion load power source with analog quantity and digital quantity doubleway output Download PDFInfo
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- CN108445440A CN108445440A CN201810626324.4A CN201810626324A CN108445440A CN 108445440 A CN108445440 A CN 108445440A CN 201810626324 A CN201810626324 A CN 201810626324A CN 108445440 A CN108445440 A CN 108445440A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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Abstract
The invention belongs to Electrical Measuring Instrument instrument field, specially a kind of output signal is the dynamic distortion load power source of analog quantity and digital quantity, including master controller, DSP module, human-computer interaction module, signal output module, hard disk and USB interface.On the one hand on the other hand this power source can play back the waveform of scene recording with the various preset dynamic distortion waveforms of simulation output；This power source can directly export digital quantity signal and analog signals, both can carry out dynamic distortion load calibrating to traditional analog input electric energy meter, can also carry out dynamic distortion load calibrating to the digitalized electrical energy meter in intelligent station；The multiple functions such as the voltage of various analog input electric energy meters or digital quantity inputing power table, electric current, frequency, harmonic wave, flickering, m-Acetyl chlorophosphonazo, the rapid drawdown that rises sharply, tri-phase unbalance factor, dynamic distortion are examined and determine comprehensively.
Description
Technical field
The invention belongs to Electrical Measuring Instrument instrument fields, are related to the check test instrument of electric energy meter, specially have mould
The dynamic distortion load power source of analog quantity and digital quantity doubleway output.
Background technology
It is non-linear, aperiodic with application of the development and power electronic technique of power electronic technique in all trades and professions
Property, impact and fluctuation electric load increase significantly, keep the dynamic distortion load capacity in power grid increasing, quantity is got over
Come more, and load of the power grid under actual operating state is often not stable state, and distorts increasing, fluctuation pattern not
It is unified, and the test condition of traditional electric energy meter generally requires steady state power source, the measuring accuracy under fluctuating load often to cannot get
Examination, and the load under actual operating state is often not stable state, this is possible to cause such situation：Electric energy meter is in reality
It is qualified to test room head inspections, examines and determine unqualified after hanging net operation, it is qualified to remove and be sent to laboratory verification again.It can be seen that electrical energy measurement
The accuracy and reasonability of device, be directly related to hair, confession, electricity consumption tripartite economic interests.Improve dynamic distortion loading condiction
Under electrical energy measurement accuracy, be electric power hair, confession, electricity consumption tripartite common needs, and the section under complicated loading condiction
It learns, the concrete embodiment of fair, reasonable measurement principle, therefore, the suggestion of industry relevant criterion needs to increase non-to the test of electric energy meter
Linearity measuring waveform.Especially with the development of intelligent station, the live existing analog waveform of waveform also has digital waveform, and these are counted
Character waveform has no the test equipment of profession, and electric energy industry can not also solve the problems, such as numerical non-linear load testing at present.
It is current in the prior art, a kind of dynamic distortion Road test system（201710592259.3）It is to lead to host computer
It crosses communication controller to connect with kernel memory so that user can be according to actual needs in advance by preset dynamic waveform upper
Position machine is issued to kernel memory, and extracts from kernel memory by signal generator dynamic waveform and be fitted output,
The signal exported at this time is analog signal.A kind of similarly dynamic distortion power source based on high speed DMA fitting
（201720725802.8）Output signal is also analog signal, in the case of the digital signal of intelligent station output, can not be tested
Electric energy error under dynamic distortion load.
Invention content
It is an object of the invention to solve the check test instrument of existing electric energy meter or system not generating number
Nonlinear waveform is inaccurate so as to cause the measuring accuracy under digital fluctuating load of test equipment or system of electric energy meter
The problem of, provide the dynamic distortion load power source with analog quantity and digital quantity doubleway output.
The present invention the technical solution to solve the technical problem is that：Dynamic distortion with analog quantity and digital quantity doubleway output
Load power source, including master controller, DSP module, human-computer interaction module, signal output module and storage have the reality that scene is recorded
The hard disk of border Wave data；The human-computer interaction module is connected with master controller；Master controller and hard disk two-way communication；It is described
Master controller is connected with DSP module by 16 parallel bus；The signal output module includes analog signal output module
And digital signal output modules, the analog signal output module include D/A converters and power amplifier, D/A converters
Output end is connected to the input terminal of power amplifier, and the output end of the power amplifier is the analog signal of signal output module
Output end；The digital signal output modules include protocol packing module, Network Interface Module and optical communication module, the agreement
The output end of packetization module is connected to the input terminal of optical communication module, the output of the optical communications module by network interface module
End is the digital signal output end of signal output module；The signal output end of the DSP module be respectively connected to D/A converters and
The signal input part of protocol packing module.
Preferably, further include USB interface, two-way communication between the USB interface and master controller.Master controller can will be outer
In the actual waveform data conversion storage to main control hard disk that the scene preserved in portion's mobile hard disk or USB flash disk is recorded.
Preferably, the human-computer interaction module includes key-press module and display module, master controller and key-press module and
Equal one-way communication between display module.
Preferably, the model STM32F429IGT6 of the master controller.
Preferably, the model ADSP-21483 of the DSP module.
Preferably, the model K60P144M100SF2 of the protocol packing module, the model of the Network Interface Module
For DP83640, the model AFBR-5978Z of the optical communication module.
Preferably, the key-press module includes at least number key, directionkeys, status key.Key-press module be provided with number key,
A variety of buttons such as directionkeys, status key are used for inputting key assignments to master controller.
Preferably, the model ZLG7290B of the key-press module.
Master controller is responsible for control and data interaction to key-press module, display module, USB interface and hard disk；DSP module
There are two types of operating modes：First, according to the type of waveform of key-press module input, voltage, current effective value, initial phase angle, the frequency of setting
The electric parameters information such as rate, overtone order calculates the digitlization discrete point of output waveform；Second is that DSP module can call master control
It is exported for the recording Wave data of playback in device hard disk processed, is believed for number for the recording Wave data of playback in hard disk
Number, master controller reads in the digital quantity signal in hard disk in master controller memory, is then then forwarded to DSP module, DSP module
The input signal that transformation-ratio meter calculation is separately converted to D/A converters and protocol packing module is carried out to the data received.User can
To need the dynamic distortion type of waveform that exports by key-press module selection, be arranged the frequency of output waveform, virtual value, phase,
The parameters such as harmonic wave, master controller carry out processing judgement to input information, are transferred to DSP module, DSP module according to input information into
The synthesis of row digital signal, to the digitlization discrete point of output waveform；Display module can show setting for Keysheet module input
Set order, calling preset waveform information, and show that size, phase, frequency and the light of signal after power amplification are logical
The information such as the digital quantity signal of module output are interrogated, show output abnormality information, show showing for playback in master controller hard disk
Record actual waveform data, so that user is intuitively understood the state of standard source, to it is of the present invention have analog quantity and
It the dynamic distortion load power source of digital quantity doubleway output can be with output frequency, phase and amplitude adjustable high precision voltage and current.
Dynamic distortion load power of the present invention source can be with output digit signals and analog signal.DSP modules export
Dynamic distortion digital quantity signal D/A converters be transferred to by SPI interface be converted to the small signal of dynamic distortion analog quantity, then
The input interface that power amplifier is output to by corresponding output interface carries out voltage power amplification and current power amplification, corresponding
Full-span output signal be 100V and 5A, at this time signal output module output be analog signal；The output of DSP modules is moved
State distort digital quantity signal, protocol packing module according to the parameter logistics words such as the MAC Address, sampling number, ASDU of setting from
Scatterplot is packaged, and finally output meets the sampled signal of IEC61850-9-2 agreements, which inputs Network Interface Module, press
It is encoded data into according to the coding rule of physical layer, parallel data, which is then converted into serial data, exports to optical communication module, light
Communication module converts data to light digital quantity signal.
According to involved in the above-mentioned course of work to master controller and DSP module function it is found that realizing the main control
The control software of device and DSP module corresponding function is that those skilled in the art are easy to implement.
Compared with prior art, the beneficial effects of the invention are as follows：This power source on the one hand can be various preset with simulation output
Dynamic distortion waveform, on the other hand can play back scene recording waveform；This power source can directly export digital quantity signal
And analog signals, can both dynamic distortion load calibrating be carried out to traditional analog input electric energy meter, it can also be to intelligence
Digitalized electrical energy meter in standing carries out dynamic distortion load calibrating；To various analog input electric energy meters or digital quantity inputing power
The multiple functions such as voltage, electric current, frequency, harmonic wave, flickering, m-Acetyl chlorophosphonazo, the rapid drawdown that rises sharply, tri-phase unbalance factor, the dynamic distortion of table
It is examined and determine comprehensively.
Description of the drawings
The structure in the dynamic distortion load power sources of the present invention with analog quantity and digital quantity doubleway output Fig. 1
Schematic diagram.
Specific implementation mode
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to the skill of the present invention
Art scheme is described in detail.Obviously, described embodiments are only a part of the embodiments of the present invention, rather than all real
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art without making creative work gained
The every other embodiment arrived belongs to the range that the present invention is protected.
Referring to attached drawing 1, now to the dynamic distortion load work(provided by the invention with analog quantity and digital quantity doubleway output
Rate source illustrates.
Dynamic distortion load power source with analog quantity and digital quantity doubleway output, as shown in Figure 1, including main control
Device, DSP module, human-computer interaction module, signal output module and storage have the hard disk of the actual waveform data of scene recording；It is described
Human-computer interaction module is connected with master controller；Master controller and hard disk two-way communication；The master controller passes through with DSP module
16 parallel bus are connected；The signal output module includes analog signal output module and digital signal output modules, institute
It includes D/A converters and power amplifier to state analog signal output module, and the output end of D/A converters is connected to power amplifier
Input terminal, the output end of the power amplifier is the analog signal output of signal output module；The digital signal is defeated
It includes protocol packing module, Network Interface Module and optical communication module to go out module, and the output end of the protocol packing module passes through
Network interface module is connected to the input terminal of optical communication module, and the output end of the optical communications module is the number of signal output module
Word signal output end；The signal output end of the DSP module is respectively connected to D/A converters and the signal of protocol packing module is defeated
Enter end.
Further, as the dynamic distortion load power of the present invention with analog quantity and digital quantity doubleway output
A kind of specific implementation mode in source, further includes USB interface, two-way communication between the USB interface and master controller.Master controller can
With in the actual waveform data conversion storage to main control hard disk for the scene recording that will be preserved in external mobile hard disk or USB flash disk.
Further, as the dynamic distortion load power of the present invention with analog quantity and digital quantity doubleway output
A kind of specific implementation mode in source, the human-computer interaction module include key-press module and display module, master controller and button mould
Equal one-way communication between block and display module.
Further, as the dynamic distortion load power of the present invention with analog quantity and digital quantity doubleway output
A kind of specific implementation mode in source, the model STM32F429IGT6 of the master controller.
Further, as the dynamic distortion load power of the present invention with analog quantity and digital quantity doubleway output
A kind of specific implementation mode in source, the model ADSP-21483 of the DSP module.
Further, as the dynamic distortion load power of the present invention with analog quantity and digital quantity doubleway output
A kind of specific implementation mode in source, the model K60P144M100SF2 of the protocol packing module, the Network Interface Module
Model DP83640, the model AFBR-5978Z of the optical communication module.
Further, as the dynamic distortion load power of the present invention with analog quantity and digital quantity doubleway output
A kind of specific implementation mode in source, the key-press module include at least number key, directionkeys, status key.Key-press module is provided with
A variety of buttons such as number key, directionkeys, status key are used for inputting key assignments to master controller.User can be selected by key-press module
The dynamic distortion type of waveform for needing to export is selected, the parameters such as frequency, virtual value, phase, the harmonic wave of output waveform, main control are set
Device carries out processing judgement to input information, is transferred to DSP module, and DSP module carries out digital signal processing algorithm to input information
Operation, to the digitlization discrete point of output waveform.
Further, as the dynamic distortion load power of the present invention with analog quantity and digital quantity doubleway output
A kind of specific implementation mode in source, the model ZLG7290B of the key-press module.
In a specific embodiment, the model NL6448BC20-21C of the display module；The type of the D/A converter
Number be AD5790；The model OPA541 of the power amplifier.
The SCLK of the display module ±, D0 ±, D1 ±, D2 ±, D3 ± pins respectively with the P16-P21 of master controller,
P24-P27 pins are connected；RX, TX pin of the key-press module are connected with P96, P97 pin of master controller respectively；It is described hard
Disk by the SATA_TX of SATA interface ±, SATA_RX ± pins manage with P171, P170, P169, P172 of master controller respectively
Foot is connected；VCC, DATA-, DATA+, GND pin of the USB interface respectively with P158, P156 of master controller, P157,
P159 pins are connected；SDO, SDIN, SCLK, SYNC pin of the D/A converter respectively with P2.6, P2.7 of DSP module,
P2.8, P2.9 pin connect；The Vout pins of D/A converter are managed by the Vin of analog input interface and power amplifier
Foot connects, and the signal output end of the power amplifier is analog signal output mouth；The EZP_DI of the protocol packing module,
EZP_DO, EZP_CLK, EZP_CS pin are connect with P3.6, P3.7, P3.8, P3.9 pin of DSP module respectively, the agreement
P81, P83, P82, P84, P110, P128, P51, P52 pin of packetization module are connected to the Network Interface Module
TX_ER, RX_ER, TX_EN, RX_DV, TX_CLK, RX_CLK, CRS, COL pin of MII interfaces, the protocol packing module
P127, P131, P132, P133 pin are connected to the TXD [3 of the MII interfaces of the network connection interface:0] pin, it is described
P109, P106, P105, P104 pin of protocol packing module are connected to the RXD [3 of the MII interfaces of Network Interface Module:
0] RD+, RD- pin of pin, the Network Interface Module are connected to Tdata+, Tdata- pin of optical communication module, described
The signal output end of optical communication module is digital signal output end mouth.
Master controller is responsible for control and data interaction to key-press module, display module, USB interface and hard disk；DSP module
There are two types of operating modes：First, according to the type of waveform of key-press module input, voltage, current effective value, initial phase angle, the frequency of setting
The electric parameters information such as rate, overtone order calculates the digitlization discrete point of output waveform；Second is that DSP module can call master control
It is exported for the recording Wave data of playback in device hard disk processed, is believed for number for the recording Wave data of playback in hard disk
Number, master controller reads in the digital quantity signal in hard disk in master controller memory, is then then forwarded to DSP module, DSP module
The input signal that transformation-ratio meter calculation is separately converted to D/A converters and protocol packing module is carried out to the data received.User can
To need the dynamic distortion type of waveform that exports by key-press module selection, be arranged the frequency of output waveform, virtual value, phase,
The parameters such as harmonic wave, master controller carry out processing judgement to input information, are transferred to DSP module, DSP module by input information into
The synthesis of row digital signal, to the digitlization discrete point of output waveform；Display module can show setting for Keysheet module input
Set order, calling preset waveform information, and show that size, phase, frequency and the light of signal after power amplification are logical
The information such as the digital quantity signal of module output are interrogated, show output abnormality information, show showing for playback in master controller hard disk
Record actual waveform data, so that user is intuitively understood the state of standard source, to it is of the present invention have analog quantity and
It the dynamic distortion load power source of digital quantity doubleway output can be with output frequency, phase and amplitude adjustable high precision voltage and current.
Dynamic distortion load power of the present invention source can be with output digit signals and analog signal.DSP modules export
Dynamic distortion digital quantity signal D/A converters be transferred to by SPI interface be converted to the small signal of dynamic distortion analog quantity, then
The input interface that power amplifier is output to by corresponding output interface carries out voltage power amplification and current power amplification, corresponding
Full-span output signal be 100V and 5A, at this time signal output module output be analog signal；The output of DSP modules is moved
State distort digital quantity signal, protocol packing module according to the parameter logistics words such as the MAC Address, sampling number, ASDU of setting from
Scatterplot is packaged, and finally output meets the sampled signal of IEC61850-9-2 agreements, which inputs Network Interface Module, press
It is encoded data into according to the coding rule of physical layer, parallel data, which is then converted into serial data, exports to optical communication module, light
Communication module converts data to light digital quantity signal.
According to involved in the above-mentioned course of work to master controller and DSP module function it is found that realizing the main control
The control software of device and DSP module corresponding function is that those skilled in the art are easy to implement.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Mode within the knowledge of a person skilled in the art can also be without departing from the purpose of the present invention
It makes a variety of changes.
Claims (8)
1. the dynamic distortion load power source with analog quantity and digital quantity doubleway output, it is characterised in that：Including master controller,
DSP module, human-computer interaction module, signal output module and storage have the hard disk of the actual waveform data of scene recording；The people
Machine interactive module is connected with master controller；Master controller and hard disk two-way communication；The master controller passes through 16 with DSP module
Parallel bus is connected；The signal output module includes analog signal output module and digital signal output modules, described
Analog signal output module includes D/A converters and power amplifier, and the output end of D/A converters is connected to power amplifier
Input terminal, the output end of the power amplifier are the analog signal output of signal output module；The digital signal output
Module includes protocol packing module, Network Interface Module and optical communication module, and the output end of the protocol packing module passes through net
Road interface module is connected to the input terminal of optical communication module, and the output end of the optical communications module is the number of signal output module
Signal output end；The signal output end of the DSP module is respectively connected to the signal input of D/A converters and protocol packing module
End.
2. the dynamic distortion load power source according to claim 1 with analog quantity and digital quantity doubleway output, special
Sign is：Further include USB interface, two-way communication between the USB interface and master controller.
3. the dynamic distortion load power source according to claim 1 or 2 with analog quantity and digital quantity doubleway output,
It is characterized in that：The human-computer interaction module includes key-press module and display module, master controller and key-press module and display mould
Equal one-way communication between block.
4. the dynamic distortion load power source according to claim 3 with analog quantity and digital quantity doubleway output, special
Sign is：The model STM32F429IGT6 of the master controller.
5. the dynamic distortion load power source according to claim 4 with analog quantity and digital quantity doubleway output, special
Sign is：The model ADSP-21483 of the DSP module.
6. the dynamic distortion load power source according to claim 5 with analog quantity and digital quantity doubleway output, special
Sign is：The model K60P144M100SF2 of the protocol packing module, the model of the Network Interface Module
DP83640, the model AFBR-5978Z of the optical communication module.
7. the dynamic distortion load power source according to claim 6 with analog quantity and digital quantity doubleway output, special
Sign is：The key-press module includes at least number key, directionkeys, status key.
8. the dynamic distortion load power source according to claim 7 with analog quantity and digital quantity doubleway output, special
Sign is：The model ZLG7290B of the key-press module.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111766558A (en) * | 2020-08-20 | 2020-10-13 | 河南许继仪表有限公司 | Electric energy meter special power supply working condition simulation test system and test method |
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