CN206378528U - A kind of intelligent telemetering type voltage quality monitoring analyzer - Google Patents
A kind of intelligent telemetering type voltage quality monitoring analyzer Download PDFInfo
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- CN206378528U CN206378528U CN201720034752.9U CN201720034752U CN206378528U CN 206378528 U CN206378528 U CN 206378528U CN 201720034752 U CN201720034752 U CN 201720034752U CN 206378528 U CN206378528 U CN 206378528U
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Abstract
A kind of intelligent telemetering type voltage quality monitoring analyzer, using 32 bit DSP chips as cpu circuit, cpu circuit is connected respectively：Button inputting circuits；Communicating circuit, communicating circuit carries out transmitting-receiving communication with cpu circuit, and communicating circuit is communicated further through GPRS with distant place centralized control of electric power system；Sample circuit, the input connection voltage transformer of sample circuit；Power circuit；Data analysis circuit；Storage circuit；Protection circuit, protection circuit output end connects under-voltage over-pressed indicating circuit and protection relay digital output circuit；Liquid crystal display circuit.The utility model can measure the quality of voltage indices data of ABCD classes monitoring point in real time, and Monitoring Data is transferred into main website center by GPSR, be had great practical value to mitigating the labor intensity of electricity management department, improving and improve management of power use level.
Description
Technical field
The utility model belongs to technical field of power systems, and in particular to a kind of intelligent telemetering type voltage quality monitoring analysis
Instrument.
Background technology
With flourishing for Chinese national economy, electric load increased dramatically.At present, power department should not only meet use
Family is to amount of energy increasing need, it is necessary to meet its requirement to higher levels of electrical power quality.
In recent years, China's power technology is quickly grown, and general requirement of the people to the quality of power supply be progressively met.
But, the access of the nonlinear load such as application and a large amount of frequency converters, rectifier, electric arc furnaces due to HVDC transmission system,
Harmonic pollution situation in power network is on the rise, and harmonic content is continuously increased.On the one hand, indivedual extra high voltage networks are not circulated
Transposition and the access of the Large Copacity asymmetrically placed load such as electric motor car, cause that the transient interference of part power network is larger, and voltage flicker is existing
As occurring often；On the other hand, imbalance between power supply and demand is larger, automatic Regulation, reactive power compensator performance factor in power network
The reason such as not high, causes user's terminal voltage seriously unstable so that the brownout in peak of power consumption, and in low power consumption
Can be higher, and the frequency of power network can also be influenceed by overload sometimes.
Safe and stable operation of the problem of in terms of the quality of power supply not only to power network is totally unfavorable, but also is easily caused electricity
Network users electrical equipment is not normally functioning, service life reduction.
Voltage quality monitoring is supervised as a key link of electric energy quality monitoring in Operation of Electric Systems management and technology
Vital effect is played in superintending and directing.In power network, voltage quality monitoring system is set up, can record system running in detail
In quality of voltage index, find out quality of voltage pollution sources, can quickly and easily be the power network quality of power supply improvement and improvement
Foundation is provided.
Therefore, national departments concerned has successively formulated the relevant criterion of electric power quality, such as：GB/T18481-
2001《The quality of power supply --- temporary overvoltage and transient overvoltage》；GB12326-2000《The quality of power supply --- voltage allows ripple
Dynamic and flickering》；GB/T14549-93《The quality of power supply --- public electric wire net harmonic wave》；GB12325-2000《The quality of power supply --- supply
Piezoelectric voltage tolerance》；GB/T15543-95《The quality of power supply --- three-phase voltage allows degree of unbalancedness》.
Although having included the monitoring to quality of voltage in traditional power supply plan, such as to PCC（Points of common connection）
The monitoring of voltage, frequency, and even can be by protection control function and part in electricity substation Integrated Automation Technology
The monitoring function of the quality of power supply is integrated together.However, traditional voltage quality monitoring ways and means still can not be met
For the electricity consumption both sides detection requirement higher to quality of voltage.This is mainly manifested in the following aspects：
1）Traditional voltage quality monitoring system can not typically be fully achieved, or even can not be realized to the real-time of quality of voltage
On-line monitoring.It is past when there is powerful electric arc furnaces and rectifying installation in such as system in the case where quality of voltage fluctuation is larger
Toward can not comprehensively, quality of voltage information that is real-time, being quickly obtained system.
2）Under normal circumstances, influence quality of voltage principal element include variation, voltage pulsation, unbalance voltage and
Harmonic voltage etc..Due to the difficulty that technology is realized, traditional voltage quality monitoring device can only often monitor that quality of voltage refers to
One or several in mark, it is difficult to which comprehensive many factors carry out analyzing comprehensively, exactly to quality of voltage.
3）Traditional voltage quality monitoring device, because the dynamic voltage quality duration is very short, monitoring difficulty is larger.One
As all simply consider steady state voltage quality monitoring, seldom consider dynamic voltage quality comprehensive monitoring.
4）Analog component is used traditional voltage quality monitoring device more, being limited by device performance and signal processing method
System, voltage monitoring precision is not high, it is difficult to reach higher requirement.
Fast development and progressive, the indispensable kernel processor chip of digital device, such as A/D with electronic chip manufacturing technology
Converter, microprocessor etc., all exploitation for the long-range monitoring analyzer of quality of voltage provide good software and hardware and supported.
Voltage is as one of leading indicator for weighing electric power quality, to the stabilization of power grids and electricity supply and use equipment safety
Operation, line loss, industry security production, product quality, the household electricity of electricity consumption unit consumption and people suffer from directly affecting.When
When system voltage is relatively low, reactive power loss and energy loss in system are increased, or even jeopardize the stability of system operation, are drawn
Starting voltage is collapsed.When overtension, the insulation of various electrical equipments may suffer damage, service life reduction.Therefore, in electricity
, it is necessary to constantly promote Improving Measurements in Force system running, supervision is improved, it is ensured that stabilization, the reliability of quality of voltage.
Currently, the monitoring of domestic electrical system voltage quality is mostly using comprehensive power quality analyzer or frequency analysis
Instrument etc., it is difficult to carry out the transmission to the synchro measure of the related electric energy in same electric power system different location and measurement data, analyze, comment
Estimate, so as to cause to lack whole electric power system voltage quality monitoring monitoring and analysis comprehensively, comprehensive.Therefore, it is necessary to build
Remote collection, Centralizing inspection and the analysis system of a set of quality of voltage are found, wave distortion, voltage wave to influenceing quality of voltage
The indexs such as dynamic, flickering, imbalance of three-phase voltage are integrated, comprehensively analyzed.
The content of the invention
Technical problem to be solved in the utility model is：The problem of above-mentioned prior art is present is solved, and provides a kind of
Intelligent telemetering type voltage quality monitoring analyzer, the standard and the actual requirement of users promulgated according to relevant department is used
Advanced technology is designed, and is a kind of intelligent voltage quality monitoring management terminal, ABCD classes monitoring point can be measured in real time
Quality of voltage indices data, and Monitoring Data is transferred to main website center by GPSR, the work to mitigating electricity management department
Intensity, improve and improve management of power use level and have great practical value.
The technical solution adopted in the utility model is：
A kind of intelligent telemetering type voltage quality monitoring analyzer, using 32 bit DSP chips as cpu circuit, the input of cpu circuit
End is connected respectively：
Button inputting circuits, the input connection keyboard or touch-screen of button inputting circuits；
Communicating circuit, communicating circuit carries out transmitting-receiving communication by RS485/RS232 interfaces and cpu circuit, and communicating circuit is again
Communicated by GPRS with distant place centralized control of electric power system；
Sample circuit, the input connection voltage transformer of sample circuit；
Power circuit, power circuit also has outer supply while cpu circuit and other all circuit work powers is supplied
Dc source interface；
The output end of cpu circuit is connected respectively：
Data analysis circuit；
Storage circuit, storage circuit output end linkage record data storage storehouse；
Protection circuit, protection circuit output end connects under-voltage over-pressed indicating circuit and protection relay digital output circuit；
Liquid crystal display circuit, liquid crystal display circuit output end connection liquid crystal display.
Intelligent telemetering type voltage quality monitoring analyzer major function of the present utility model includes：
1st, real time data is measured
Measure current real-time voltage, total harmonic distortion factor.Voltage accuracy meets 0.5S grades, B grades of harmonic wave precision.Obtain in real time
And show GPRS communication states.
2nd, statistics is recorded
Day month voltage total run time, it is super it is upper, super under, qualified run time, and qualification rate, super upper rate, super lower rate；
Day month voltage power failure cumulative time and electricity consumption reliability；Day month voltage extremity and its go out current moment；Nearest ten notes that have a power failure
Record；Historical data is nearest three days and this month and statistics last month；Day voltage curve, freezed density for 15 minutes；Three
Typical day data, typical day can be set in man-machine interface；Moon statistics beginning may be configured as No. 1-25 day, public to meet different power supplies
Take charge of statistical demand.
3rd, harmonic data is recorded
Voltage total harmonic distortion factor is able to record that, 2-19 subharmonic voltage containing ratios, measuring method meets power system mark
Quasi- GB/T14549-93；Day month total harmonic distortion factor out-of-limit cumulative time and maximum and its time of occurrence；Day maximum harmonic wave
Number of times and its harmonic voltage containing rate.
4th, parameter setting function
Primary voltage sets (100V/220V/380V/10 kV/35 kV/110 kV/220 kV/500 kV)；Voltage is got over
Limit thresholding to set, the harmonic wave upper limit is set；The statistics beginning day moon is set, 3 typical days settings；Terminal address, region-position code, and dress
Put set of time.
5th, communication function
Support GPRS/RS485/RS232 communications；Communication speed can be set.
6th, semaphore is outputed
Overvoltage and under-voltage have LED instructions, and provide correspondence relay output interface.
Advantageous effect：
1）Device complete machine integrated level is high, and core CPU module uses 32 bit DSP chips, and travelling speed is fast, and built-in 16 AD are adopted
Sample, sampling is accurate, and sensitivity is high, and real-time property is strong.
2）AC sampling carries out, with frequency collection, sampling 128 points, sample point enriches, enough dividing per cycle using hardware phase ring
Analyse 2-19 subharmonic.
3）Possesses 128*64 Chinese word library liquid crystal, man-machine interface is clear, and data items enrich.
4）With multiple operation authority, parameter setting can be realized in local human-machine operation, or be set by a GPRS network distant place
Put.
5）GPRS communication functions have been used, have supported real-time distant place online mode modification parameter and device to enter row data communication.
6）Collecting voltage monitors frequency analysis and over voltage defencive function in one, powerful.
7）Data storage function is powerful, and the history data store time is long, and data message amount is big.
8）Power good, reserved two-way DC direct currents outlet.
Brief description of the drawings：
Fig. 1 is the utility model circuit structure block diagram.
Embodiment：
Referring to Fig. 1, a kind of intelligent telemetering type voltage quality monitoring analyzer of the present utility model, using 32 bit DSP chips as
Cpu circuit, the input of cpu circuit is connected respectively：
Button inputting circuits, the input connection keyboard or touch-screen of button inputting circuits；
Communicating circuit, communicating circuit carries out transmitting-receiving communication by RS485/RS232 interfaces and cpu circuit, and communicating circuit is again
Communicated by GPRS with distant place centralized control of electric power system；
Sample circuit, the input connection voltage transformer of sample circuit；
Power circuit, power circuit also has outer confession dc source while CPU and all circuit work powers is supplied
Interface；
The output end of cpu circuit is connected respectively：
Data analysis circuit；
Storage circuit, storage circuit output end linkage record data storage storehouse；
Protection circuit, protection circuit output end connects under-voltage over-pressed indicating circuit and protection relay digital output circuit；
Liquid crystal display circuit, liquid crystal display circuit output end connection liquid crystal display.
The built-up circuit of utility model is described in further detail below：
1st, cpu circuit
The cpu circuit of device uses the high-performance 32-bit dsp chip that Texas Instrument provides,
Data processing function is powerful, supports at least 16 road analog acquisitions and 32 road programmable digital amounts, supports two-way SPI
Serial ports, 4 road universal serial ports, built-in AD conversion function, be whole system operation core, the data acquisition of control device,
Frequency analysis, distant place communication etc..
2nd, sample circuit
The sample circuit of device includes voltage transformer and reverse operational amplification circuit and passive filter circuit, mutual induction of voltage
Device function is that the voltage signal that will need measurement analysis puts small by undistorted, isolation and signal by operational amplifier
With effect analysis voltage signal amplitude will be needed to narrow down within 3.3V, directly introduce signals into 16 ADC moulds built in DSP
Plan-digital quantizer, sampling precision is high.ADC converters carry out gathering with frequency using hardware phase lock high precision loop technique, each frequency cycle
128 points of design sampling, for analyzing, calculating harmonic wave and voltage protection.
3rd, data analysis circuit
Data analysis circuit passes through fast discrete Fourier algorithm by the way that sample circuit to be gathered to the AC signal of output
（FFT）Fundamental wave and each 2-19 harmonic components analysis are carried out, amplitude and phase then carry out analysis calculating, according still further to country's mark
Standard, which is calculated, obtains corresponding harmonic wave index.
4th, button inputting circuits
The button inputting circuits major function of device is inquires about as device information, definite value is set, the button of logic configuration
Input function, button, which carries to disappear, trembles function.
5th, liquid crystal display circuit
The human-computer interaction interface of centralized displaying and the parameter modification of device information, liquid crystal display shows dimensions as the Chinese of 128 X 64
Word lattice, is communicated by SPI serial ports and dsp chip.
6th, communicating circuit
The communicating circuit of device mainly includes general RS485/RS232 circuits and special GPRS communication units, and function is
The real-time voltage data harmonic component data information that sampling is calculated is produced.RS485/RS232 is local debugging and leads to
Mouth is interrogated, GPRS communication units support that data are communicated with distant place centralized control of electric power system in a wireless form.
7th, protection circuit
Circuit band is under-voltage to be indicated and over-pressed indicating circuit and protection relay digital output circuit, is indicated and is acted for protection alarm
Output.Defencive function be able to can be adjusted by soft pressing plate switching, protection act and delay definite value parameter.
8th, power circuit
Power circuit turns DC3.3V, 5V, 24V Switching Power Supply using AC/DC220V, and stable DC3.3V electricity is provided for device
Source, and the reserved output of DC5V and DC24V power supplys all the way.
9th, storage circuit
Storage circuit is mainly with the maximum voltage value in collection history data store, including historical record time, minimum electricity
Pressure value, each harmonic component variation information and its voltage protection action and warning information.
Claims (1)
1. a kind of intelligent telemetering type voltage quality monitoring analyzer, it is characterised in that：Using 32 bit DSP chips as cpu circuit, CPU
The input of circuit is connected respectively：
Button inputting circuits, the input connection keyboard or touch-screen of button inputting circuits；
Communicating circuit, communicating circuit carries out transmitting-receiving communication by RS485/RS232 interfaces and cpu circuit, communicating circuit further through
GPRS is communicated with distant place centralized control of electric power system；
Sample circuit, the input connection voltage transformer of sample circuit；
Power circuit, power circuit also has outer confession direct current while cpu circuit and other all circuit work powers is supplied
Power interface；
The output end of cpu circuit is connected respectively：
Data analysis circuit；
Storage circuit, storage circuit output end linkage record data storage storehouse；
Protection circuit, protection circuit output end connects under-voltage over-pressed indicating circuit and protection relay digital output circuit；
Liquid crystal display circuit, liquid crystal display circuit output end connection liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720034752.9U CN206378528U (en) | 2017-01-12 | 2017-01-12 | A kind of intelligent telemetering type voltage quality monitoring analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720034752.9U CN206378528U (en) | 2017-01-12 | 2017-01-12 | A kind of intelligent telemetering type voltage quality monitoring analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206378528U true CN206378528U (en) | 2017-08-04 |
Family
ID=59404246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720034752.9U Expired - Fee Related CN206378528U (en) | 2017-01-12 | 2017-01-12 | A kind of intelligent telemetering type voltage quality monitoring analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206378528U (en) |
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2017
- 2017-01-12 CN CN201720034752.9U patent/CN206378528U/en not_active Expired - Fee Related
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Granted publication date: 20170804 |
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