CN106707075A - Online electric energy quality monitoring system based on ARM and FPGA - Google Patents
Online electric energy quality monitoring system based on ARM and FPGA Download PDFInfo
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- CN106707075A CN106707075A CN201710187489.1A CN201710187489A CN106707075A CN 106707075 A CN106707075 A CN 106707075A CN 201710187489 A CN201710187489 A CN 201710187489A CN 106707075 A CN106707075 A CN 106707075A
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- power quality
- arm
- fpga
- filter circuit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/02—Measuring effective values, i.e. root-mean-square values
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/16—Spectrum analysis; Fourier analysis
- G01R23/165—Spectrum analysis; Fourier analysis using filters
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- General Physics & Mathematics (AREA)
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- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The invention belongs to the technical field of electric energy quality analysis and discloses an online electric energy quality monitoring system based on an ARM and an FPGA. The online electric energy quality monitoring system comprises an electric energy quality analysis meter, a data collection server, a local monitoring terminal and a remote monitor terminal, wherein the electric energy quality analysis meter is connected with the data collection server, and the local monitoring terminal and the remote monitor terminal are respectively connected with the data collection server; the electric energy quality analysis meter comprises a voltage measurement structure, a first filter circuit, a current measurement structure, a second filter circuit, a frequency tracking module, an analog-digital conversion chip, an FPGA chip and an ARM processor; the voltage measurement structure is connected with the analog-digital conversion chip through the first filter circuit; the current measurement structure is connected with the analog-digital conversion chip through the second filter circuit; the analog-digital conversion chip is connected with the FPGA chip; the first filter module is connected with the FPGA chip through the frequency tracking module; and the FPGA chip is connected with the ARM processor.
Description
Technical field
The present invention relates to power quality analysis technical field, more particularly to a kind of quality of power supply based on ARM and FPGA exists
Line monitoring system.
Background technology
With the development of Power Electronic Technique, direct current transportation, high-power single-phase commutation technique set in industrial department and electricity consumption
It is standby to be above widely used, the application such as on railway, these cause, and current waveform distorts and three-phase imbalance is increasingly serious.
In power network, three-phase load unbalance, power system resonance grounding etc. can produce negative phase-sequence, the meeting such as power rectifier and non-linear equipment
Produce harmonic wave.Negative phase-sequence harmonic has had a strong impact on power supply quality.
The country starts late for quality of power supply research, has the eighties in last century scientific research institutions to start the research work of harmonic wave
Make, the R and D for then having some companies to start to be devoted to electric energy quality detection device work, and achieve it is certain into
Really.But in general, certainty of measurement also has larger gap compared with international most advanced level；Man-machine interface is simple and crude, and operating experience is poor；Do not have
The detection function of transient voltage, simple structure, unitary function.Meanwhile, most needs scene is checked meter or inefficiency.
The content of the invention
The present invention provides a kind of Electric Power Quality On-line Monitor System based on ARM and FPGA, solves electric energy in the prior art
Quality analysis precision is low, and human-machine operation is cumbersome, and poor anti jamming capability, sample frequency is low, the low technical problem of data acquisition efficiency.
In order to solve the above technical problems, the invention provides the Electric Power Quality On-line Monitor System based on ARM and FPGA, bag
Include：Power quality analyzer, data acquisition server, local monitoring terminals and remote monitoring terminal；
The power quality analyzer is connected with the data acquisition server, local monitoring terminals and described long-range
Monitor terminal is connected with the data acquisition server respectively；
The power quality analyzer includes：Voltage measurement structure, the first filter circuit, current measure structure, the second filter
Wave circuit, frequency tracking module, modulus conversion chip, field programmable gate array, arm processor, liquid crystal display and press
Key module；
The voltage measurement structure is connected by first filter circuit with the modulus conversion chip；The electric current is surveyed
Amount structure is connected by second filter circuit with the modulus conversion chip；
The modulus conversion chip is connected with the field programmable gate array；
First filtration module is connected by the frequency tracking module with the field programmable gate array；
The field programmable gate array is connected with the arm processor；
The arm processor is connected with the liquid crystal display and button module respectively.
Further, the power quality analyzer includes：First power quality analyzer and/or second quality of power supply point
Analyzer/or the 3rd power quality analyzer；
Wherein, first power quality analyzer uses IEC61850 standards, and second power quality analyzer is adopted
With the other standards agreement in addition to the IEC61850 standards, the 3rd power quality analyzer is using customized communication protocols
View.
Further, the frequency tracking module includes：Frequency tracking circuit；
The frequency tracking circuit is connected with first filter circuit and the field programmable gate array respectively.
Further, the modulus conversion chip uses AD7606 synchronized sampling modulus data acquisition chips.
Further, first filter circuit and second wave filter use second order active low pass filter.
Further, the voltage measurement structure includes：Voltage transformer；
The voltage transformer is connected with first filter circuit.
Further, the quantity of the voltage transformer is two or more.
Further, the current measure structure includes：Current transformer；
The current transformer and second filter circuit.
Further, the quantity of the current transformer is two or more.
One or more technical schemes provided in the embodiment of the present application, at least have the following technical effect that or advantage：
The Electric Power Quality On-line Monitor System based on ARM and FPGA provided in the embodiment of the present application, using arm processor
Cooperateing with the framework of field programmable gate array, field programmable gate array control modulus conversion chip carries out data acquisition and data
Analysis, complicated interpersonal interaction and communication function is realized by arm processor, so that the operating efficiency of lifting device and simple operation
Property.Present apparatus passage is equipped with corresponding filter circuit, eliminates frequency alias phenomenon, so as to ensure that survey calculation on hardware
Accuracy.The all Channel Synchronous samplings of the present apparatus, it is ensured that uniformity of all passages in synchronization sampled point.The technology gram
The tracking velocity for having taken the presence of conventional phase locked loops synchronous sampling technique is slow, the low defect of frequency, is ensureing fast dynamic response
While realize high-speed synchronous sampling, eliminate the accumulated phase error of phase lock circuitry, improve analytical performance and precision.It is logical
The communication for setting up data acquisition server and local monitoring terminals and remote monitoring terminal is crossed, data acquisition efficiency is lifted.
Further, the present apparatus uses high precision analogue conversion chip, coordinates the sampling of multi-channel high frequency rate so as to realize height
Voltage, current measurement precision.
Further, the present apparatus is equipped with single second order active low pass filter per passage, is cut in the range of normal range
Only frequency is 14KHz, and cut-off frequency is 22KHz in full range, complies fully with quality of power supply input reference signal, so that
The accuracy of survey calculation is ensure that on hardware.
Brief description of the drawings
Fig. 1 is the structural representation of the Electric Power Quality On-line Monitor System based on ARM and FPGA provided in an embodiment of the present invention
Figure；
Fig. 2 is the structural representation of power quality analyzer provided in an embodiment of the present invention.
Specific embodiment
The embodiment of the present application is solved existing by providing a kind of Electric Power Quality On-line Monitor System based on ARM and FPGA
Power quality analysis precision is low in technology, and human-machine operation is cumbersome, and poor anti jamming capability, sample frequency is low, and data acquisition efficiency is low
Technical problem；Improving measurement accuracy is reached, antijamming capability, the technique effect of sample frequency and data acquisition efficiency.
In order to be better understood from above-mentioned technical proposal, below in conjunction with Figure of description and specific embodiment to upper
State technical scheme to be described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to the application skill
The detailed description of art scheme, rather than the restriction to technical scheme, in the case where not conflicting, the embodiment of the present application
And the technical characteristic in embodiment can be mutually combined.
Referring to Fig. 1, based on the Electric Power Quality On-line Monitor System of ARM and FPGA, including：Power quality analyzer, data
Acquisition server, local monitoring terminals and remote monitoring terminal.
The power quality analyzer is connected with the data acquisition server, local monitoring terminals and described long-range
Monitor terminal is connected with the data acquisition server respectively.
Data acquisition server connects multiple local monitoring terminals by interchanger, realizes that compartmentalization local monitor is realized having
The power quality analysis monitoring of effect.
The power quality analyzer includes：First power quality analyzer and/or the second power quality analyzer/or
Three power quality analyzers；
Wherein, first power quality analyzer uses IEC61850 standards, and second power quality analyzer is adopted
With the other standards agreement in addition to the IEC61850 standards, the 3rd power quality analyzer is using customized communication protocols
View.So as to compatible all kinds of standard agreements as needed, puppy parc can also be compatible all kinds of off-gauge self-defined as needed
Agreement, so as to compatibility is substantially improved.
Referring to Fig. 2, the power quality analyzer includes：Voltage measurement structure, the first filter circuit, current measurement knot
Structure, the second filter circuit, frequency tracking module, modulus conversion chip, field programmable gate array, arm processor, liquid crystal display
Device and button module；
The voltage measurement structure is connected by first filter circuit with the modulus conversion chip；The electric current is surveyed
Amount structure is connected by second filter circuit with the modulus conversion chip；
The modulus conversion chip is connected with the field programmable gate array；
First filtration module is connected by the frequency tracking module with the field programmable gate array；
The field programmable gate array is connected with the arm processor；
The arm processor is connected with the liquid crystal display and button module respectively.
Specifically, the voltage measurement structure includes：Voltage transformer；The voltage transformer and the described first filtering
Circuit is connected；The quantity of the voltage transformer is two or more.
Similar, the current measure structure includes：Current transformer；The current transformer and second filtered electrical
Road；The quantity of the current transformer is two or more.
So as to realize multi-channel measurement, abundant improving measurement accuracy.
At work, 220V AC signals are transformed into 2.5V small-signals by voltage transformer, and current transformer exchanges 5V
Signal is transformed into 2.5V small-signals, inputs to filter circuit.Be filtered for prime input signal by filter circuit, and filter high-frequency is done
Signal is disturbed, modulus conversion chip is inputed to.Field programmable gate array is connected by parallel port with modulus conversion chip, internal processes
Control modulus conversion chip carries out data acquisition, and reads analog-digital conversion result.Frequency tracking circuit turns sine wave signal
Become square-wave signal, input to field programmable gate array.Field programmable gate array enters according to the analog-digital conversion result for reading
Row is calculated, and can obtain virtual value, harmonic wave, flickering, voltage swell, etc. data, by spi bus transfers to arm processor.
Arm processor possesses crystal display, can check result of calculation by keypress function.
Further, the frequency tracking module includes：Frequency tracking circuit；The frequency tracking circuit respectively with it is described
First filter circuit is connected with the field programmable gate array.All Channel Synchronous samplings, it is ensured that all passages are same
The uniformity of instance sample point.The tracking velocity that the technology overcomes the presence of conventional phase locked loops synchronous sampling technique is slow, frequency
Low defect, realizes high-speed synchronous sampling while fast dynamic response is ensured, eliminates the accumulated phase of phase lock circuitry
Error, improves analytical performance.
Further, the modulus conversion chip uses AD7606 synchronized sampling modulus data acquisition chips.That is, using 16
Position high precision analogue conversion chip, sample rates of the 200KHz per passage, highest provides 4096 sampled point cycles, it is ensured that voltage,
Current measurement precision is more than 0.1%.
Further, first filter circuit and second wave filter use second order active low pass filter.This dress
Put every passage and be equipped with single frequency overlapped-resistable filter, i.e. second order active low pass filter, the cut-off frequency in the range of normal range
It is 14KHz, cut-off frequency is 22KHz in full range, complies fully with quality of power supply input reference signal, so as in hardware
On ensure that the accuracy of survey calculation.
Further, the analyzer also includes：Ethernet interface；The Ethernet interface and the arm processor phase
Even.Or, the analyzer also includes：Wireless communication module；The wireless communication module is connected with the arm processor.ARM
Result of calculation can be transmitted to distant place main website by processor by Ethernet interface or wireless communication module；Realize remote power
Quality analysis.
One or more technical schemes provided in the embodiment of the present application, at least have the following technical effect that or advantage：
The Electric Power Quality On-line Monitor System based on ARM and FPGA provided in the embodiment of the present application, using arm processor
Cooperateing with the framework of field programmable gate array, field programmable gate array control modulus conversion chip carries out data acquisition and data
Analysis, complicated interpersonal interaction and communication function is realized by arm processor, so that the operating efficiency of lifting device and simple operation
Property.Present apparatus passage is equipped with corresponding filter circuit, eliminates frequency alias phenomenon, so as to ensure that survey calculation on hardware
Accuracy.The all Channel Synchronous samplings of the present apparatus, it is ensured that uniformity of all passages in synchronization sampled point.The technology gram
The tracking velocity for having taken the presence of conventional phase locked loops synchronous sampling technique is slow, the low defect of frequency, is ensureing fast dynamic response
While realize high-speed synchronous sampling, eliminate the accumulated phase error of phase lock circuitry, improve analytical performance and precision.This
Device uses high precision analogue conversion chip, coordinates the sampling of multi-channel high frequency rate so as to realize high voltage, current measurement precision.This
Device is equipped with single second order active low pass filter per passage, and cut-off frequency is 14KHz in the range of normal range, in full amount
Cut-off frequency is 22KHz in the range of journey, complies fully with quality of power supply input reference signal, so as to ensure that meter on hardware
The accuracy of calculation.This Project Product is using the synchronous sampling technique based on digital servo-control, 16 high-speed a/d converters, per passage
Sample frequency is 128 points/cycle, can comprehensively and effectively reflect the ruuning situation of power network.Traditional electric energy quality monitoring is
Pseudo-terminal is used in each transformer terminal, mains by harmonics and frequency monitoring is carried out to transformer and large user's circuit, to electricity
The data for netting fluctuation are merely capable of that when occurring than large range of fluctuation Surveillance center can be sent to, and in power network
Various power quality data collections are not accurate enough and real-time, and this Project Product uses data acquisition back end, solves well
Problem is stated, can these power quality datas be carried out with real-time, accurate collection.This Project Product employs online programmable dimension
Shield technology, large-scale application-specific integrated circuit, multi-layer sheet and surface mount process, greatly improve level of integrated system, safer
It is reliable.Development process that can be in real time to product realizes that software version on-line maintenance is upgraded, it is ensured that system can continuously work.
Voltage-stabilized power supply, isolating transformer rear side install filter circuit；Lifting antijamming capability.By setting up data acquisition server and sheet
The communication of ground monitor terminal and remote monitoring terminal, lifts data acquisition efficiency.
It should be noted last that, above specific embodiment is merely illustrative of the technical solution of the present invention and unrestricted,
Although being described in detail to the present invention with reference to example, it will be understood by those within the art that, can be to the present invention
Technical scheme modify or equivalent, without deviating from the spirit and scope of technical solution of the present invention, it all should cover
In the middle of scope of the presently claimed invention.
Claims (9)
1. a kind of Electric Power Quality On-line Monitor System based on ARM and FPGA, it is characterised in that including：Power quality analyzer,
Data acquisition server, local monitoring terminals and remote monitoring terminal；
The power quality analyzer is connected with the data acquisition server, the local monitoring terminals and the remote monitoring
Terminal is connected with the data acquisition server respectively；
The power quality analyzer includes：Voltage measurement structure, the first filter circuit, current measure structure, the second filtered electrical
Road, frequency tracking module, modulus conversion chip, field programmable gate array, arm processor, liquid crystal display and button mould
Group；
The voltage measurement structure is connected by first filter circuit with the modulus conversion chip；The current measurement knot
Structure is connected by second filter circuit with the modulus conversion chip；
The modulus conversion chip is connected with the field programmable gate array；
First filtration module is connected by the frequency tracking module with the field programmable gate array；
The field programmable gate array is connected with the arm processor；
The arm processor is connected with the liquid crystal display and button module respectively.
2. the Electric Power Quality On-line Monitor System of ARM and FPGA is based on as claimed in claim 1, it is characterised in that the electricity
Energy mass-synchrometer includes：First power quality analyzer and/or the second power quality analyzer/or the 3rd power quality analysis
Instrument；
Wherein, first power quality analyzer uses IEC61850 standards, and second power quality analyzer is used and removed
Other standards agreement outside the IEC61850 standards, the 3rd power quality analyzer uses customized communication protocol.
3. the Electric Power Quality On-line Monitor System of ARM and FPGA is based on as claimed in claim 1, it is characterised in that the frequency
Rate tracking module includes：Frequency tracking circuit；
The frequency tracking circuit is connected with first filter circuit and the field programmable gate array respectively.
4. the Electric Power Quality On-line Monitor System of ARM and FPGA is based on as claimed in claim 1, it is characterised in that：The mould
Number conversion chip uses AD7606 synchronized sampling modulus data acquisition chips.
5. the Electric Power Quality On-line Monitor System of ARM and FPGA is based on as claimed in claim 1, it is characterised in that：Described
One filter circuit and second wave filter use second order active low pass filter.
6. the Electric Power Quality On-line Monitor System of ARM and FPGA is based on as claimed in claim 1, it is characterised in that：The electricity
Pressure measurement structure includes：Voltage transformer；
The voltage transformer is connected with first filter circuit.
7. the Electric Power Quality On-line Monitor System of ARM and FPGA is based on as claimed in claim 6, it is characterised in that：The electricity
The quantity for pressing transformer is two or more.
8. the Electric Power Quality On-line Monitor System of ARM and FPGA is based on as claimed in claim 1, it is characterised in that the electricity
Flow measurement structure includes：Current transformer；
The current transformer and second filter circuit.
9. the Electric Power Quality On-line Monitor System of ARM and FPGA is based on as claimed in claim 1, it is characterised in that the electricity
The quantity of current transformer is two or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710187489.1A CN106707075A (en) | 2017-03-27 | 2017-03-27 | Online electric energy quality monitoring system based on ARM and FPGA |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710187489.1A CN106707075A (en) | 2017-03-27 | 2017-03-27 | Online electric energy quality monitoring system based on ARM and FPGA |
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Family
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| CN201710187489.1A Pending CN106707075A (en) | 2017-03-27 | 2017-03-27 | Online electric energy quality monitoring system based on ARM and FPGA |
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Cited By (5)
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| CN107677977A (en) * | 2017-11-18 | 2018-02-09 | 广西电网有限责任公司电力科学研究院 | A kind of long-distance monitoring method of portable electric energy mass-synchrometer |
| CN109633253A (en) * | 2018-12-07 | 2019-04-16 | 中电科仪器仪表(安徽)有限公司 | One kind realizing voltage transient signal deteching circuit and method based on FPGA |
| CN111239530A (en) * | 2020-03-06 | 2020-06-05 | 南京北鸥电气科技有限公司 | Remote online monitoring system for power distribution network |
| CN111505372A (en) * | 2020-04-22 | 2020-08-07 | 洛阳银杏科技有限公司 | Voltage acquisition device |
| CN115856423A (en) * | 2023-03-01 | 2023-03-28 | 青岛高科通信股份有限公司 | Electronic electric energy meter transformation device and meter reading system |
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Application publication date: 20170524 |