CN105510861B - A kind of multifunction digital PD meter calibrator - Google Patents
A kind of multifunction digital PD meter calibrator Download PDFInfo
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- CN105510861B CN105510861B CN201610059264.3A CN201610059264A CN105510861B CN 105510861 B CN105510861 B CN 105510861B CN 201610059264 A CN201610059264 A CN 201610059264A CN 105510861 B CN105510861 B CN 105510861B
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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
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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- General Physics & Mathematics (AREA)
- Tests Of Electronic Circuits (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The embodiment of the invention discloses a kind of multifunction digital PD meter calibrators, control interface, pulse output end mouth and the power frequency synchronous port that memory including caching output signal, the amplitude control unit for generating the numerical control pulse signal generation module of controllable pulse signal, the power frequency synchronization trigger module for generating the controllable power frequency synchronizing signal of amplitude, the D/A conversion unit for converting digital data into analog waveform, control wave and power frequency synchronizing signal amplitude and external mounting mode are set.A kind of multifunction digital PD meter calibrator provided in an embodiment of the present invention is vdiverse in function, a variety of test equipments can be replaced to complete PD meter calibration；Pulse signal parameters are set using digital form, the test experiments to the numerous parameters of PD meter, simple operation can be completed by a user interface in signal output accuracy.
Description
Technical field
The present invention relates to the calibration collimation technique fields of instrument, are calibrated more particularly to a kind of multifunction digital PD meter
Device.
Background technology
PD meter is used to measure Apparent discharge magnitude when shelf depreciation occurs for electrical equipment, is to ensure that electric power netting safe running
Key equipment.Accuracy, reliability in order to ensure PD meter measurement data is, it is necessary to the letter measured using calibrator to PD meter
Number carry out scale.
But PD meter calibrator of the prior art has the following disadvantages：Function is single, be only capable of realize pulse polarity and
The control of the quantity of electric charge, the test of PD meter other parameters, it is also necessary to by Other Instruments, cause test process cumbersome, time-consuming；It is more
Using analog or Semi-digital formula, cause to control and show inconvenience；Calibration process is easily influenced by calibration device parameter, shadow
The accuracy of calibration is rung, causes calibration error；There is no power frequency synchronizing function mostly, net synchronization capability, the phase of PD meter can not be tested
Position captures accuracy, and existing calibrator can not test the discharge mode identification function of PD meter.
Therefore, it is a kind of to facilitate the variation calibration for completing different PD meters, test and appraisal, the multifunction digital office of calibration work
Instrument calibrator is put urgently to occur.
The content of the invention
A kind of multifunction digital PD meter calibrator is provided in the embodiment of the present invention, to solve office of the prior art
Put the problem of instrument calibrator function is single, cumbersome.
In order to solve the above-mentioned technical problem, the embodiment of the invention discloses following technical solutions：
A kind of multifunction digital PD meter calibrator, it is synchronous including memory, numerical control pulse signal generation module, power frequency
Trigger module, D/A conversion unit, amplitude control unit and control interface, pulse output end mouth and power frequency synchronous port；
The control interface is used to receive waveform parameter setting command and transmitted waveform data file；
The output terminal of the memory synchronous with the numerical control pulse signal generation module and power frequency trigger module respectively
Input terminal is electrically connected, for caching output signal or exporting the discharge data of storage and user's Wave data to the numerical control arteries and veins
Rush signal generating module trigger module synchronous with power frequency；
The output terminal of the numerical control pulse signal generation module and the power frequency synchronization trigger module respectively with the digital-to-analogue
The input terminal electrical connection of converting unit, the numerical control pulse signal generation module are used to generate controllable pulse signal；The work
The synchronous trigger module of frequency is used to generate the controllable power frequency synchronizing signal of amplitude；
Numerical control pulse signal generation module trigger module electrical connection synchronous with the power frequency, the power frequency synchronously trigger
Module is used to trigger numerical control pulse signal generation module generation pulse signal at the setting phase of the tribute synchronizing signal；
The D/A conversion unit is used to the pulse signal and power frequency synchronizing signal being converted to simulation by numerical data
Waveform；
Input terminal of the output terminal of the D/A conversion unit respectively with the amplitude control unit is electrically connected, the amplitude
Control unit is used to control the amplitude of the pulse signal and power frequency synchronizing signal；
The output terminal of the amplitude control unit is electrically connected respectively with the pulse output end mouth and the power frequency synchronous port
It connects, the pulse output end mouth is used for output pulse signal, and the power frequency synchronous port is used to export power frequency synchronizing signal.
Preferably, the power frequency synchronization trigger module is hardware trigger, and Time delay is less than 10ns, and the power frequency is synchronously believed
Number precision be ± 0.1Hz.
Preferably, the memory, numerical control pulse signal generation module, power frequency synchronization trigger module, D/A conversion unit,
The integrated setting of amplitude control unit.
Preferably, the control interface, pulse output end mouth and power frequency synchronous port are set using external mounting mode.
Preferably, the controllable pulse signal includes the quantity of electric charge, rising edge, trailing edge, polarity, number, repetition rate
And/or the pulse signal that phase is controllable.
Preferably, the power frequency synchronizing signal is the controllable sinusoidal signal of 50Hz amplitudes.
Preferably, the control interface is RJ45 interfaces.
Preferably, the memory is DDR1, DDR2 and/or DDR3 memory.
Preferably, the D/A conversion unit is 9146 D/A conversion unit of high-speed AD.
Preferably, the pulse output end mouth and the power frequency synchronous port are bnc interface.
By above technical scheme as it can be seen that a kind of multifunction digital PD meter calibrator provided in an embodiment of the present invention can be with
Partial discharge is completed instead of reference signal generator, calibration pulse generating means, digital oscilloscope, frequency meter, pulse peak voltmeter
Instrument calibration.Lightweight and portable in volume, compared with a variety of test equipments in current test process, convenience and high-efficiency, testing cost also has
It is reduced, PD meter test and appraisal, calibration, calibration is made more to routinize, is conducive to electric power netting safe running.
The quantity of electric charge of pulse signal, rising edge are set using digital form, trailing edge, polarity, number, repetition rate, touched
Send out phase.On the one hand it ensure that signal output accuracy, on the other hand avoid the numerous of the various instrument and equipment control panels of operation
The test experiments of the numerous parameters of PD meter can be completed by a user interface for trivial operation.
The discharge signal sample at partial discharge scene is stored, realizes and plays back discharge process or according to typical discharge signal sample,
A variety of discharge modes are simulated, the discharge mode recognition capability for PD meter of testing and assessing.
Function possessed by a kind of multifunction digital PD meter calibrator of the present invention can not only meet test and appraisal partial discharge
The national standard of instrument, calibration, calibration for relevant device, can also provide standard reference signal, and can meet metering requirements, can
To provide measurement standard and appraisement system for choosing for PD meter.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without creative efforts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of structure diagram of multifunction digital PD meter calibrator provided in an embodiment of the present invention；
Fig. 2 is a kind of application schematic diagram of multifunction digital PD meter calibrator provided in an embodiment of the present invention；
Symbolic indication in Fig. 1-Fig. 2 is：1- multifunction digital PD meter calibrators, 11- control interfaces, 12- storages
Device, 13- numerical control pulse signal generation modules, 14- power frequency synchronization trigger modules, 15- D/A conversion units, the control of 16- amplitudes are single
Member, 17- pulse output end mouths, 18- power frequency synchronous ports, 2- PD meters to be measured, the first computers of 3-, 4- second computers.
Specific embodiment
In order to which those skilled in the art is made to more fully understand the technical solution in the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described implementation
Example is only part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiments obtained without making creative work, should all belong to protection of the present invention
Scope.For one integrated again after various functions modularization,
Fig. 1 be a kind of structure diagram of multifunction digital PD meter calibrator provided in an embodiment of the present invention, such as Fig. 1
Described, a kind of multifunction digital PD meter calibrator provided in an embodiment of the present invention includes memory 12, numerical control pulse signal
Generation module 13, power frequency synchronization trigger module 14, D/A conversion unit 15, amplitude control unit 16 and control interface 11, pulse
Output port 17 and power frequency synchronous port 18, wherein memory 12, numerical control pulse signal generation module 13, power frequency synchronization trigger mode
Block 14, D/A conversion unit 15, the 16 integrated setting of amplitude control unit, control interface 11, pulse output end mouth 17 and work
Frequency synchronous port 18 is set using external mounting mode.
11 external computer of control interface, reception user command or Wave data file, such as waveform parameter setting command,
Power frequency locking phase trigger command, amplitude setting command, discharge data；11 inline memory 12 of control interface, by user command
Or Wave data file is transmitted to memory 12.In a kind of preferred embodiment of the present invention, control interface 11 is RJ45 interfaces.
The output terminal of memory 12 trigger module 14 synchronous with numerical control pulse signal generation module 13 and power frequency respectively it is defeated
Enter end electrical connection, the caching output signal of memory 12, and the discharge data of storage and user's Wave data are exported to numerical control arteries and veins
Rush signal generating module 13 or power frequency synchronization trigger module 14.In a kind of preferred embodiment of the present invention, memory 12 is selected
DDR1, DDR2 and/or DDR3 memory.
The output terminal of numerical control pulse signal generation module 13 and power frequency synchronization trigger module 14 respectively with D/A conversion unit
15 input terminal electrical connection.According to the instruction of reception, numerical control pulse signal generation module 13 generates corresponding pulse signal, including
The quantity of electric charge, rising edge, trailing edge, polarity, number, repetition rate and/or the controllable pulse signal of phase, further include nanosecond arteries and veins
Rush signal.Power frequency synchronization trigger module 14 generates the controllable power frequency synchronizing signal of amplitude.In a kind of preferred embodiment of the present invention,
D/A conversion unit 15 is 9146 D/A conversion unit of high-speed AD, and power frequency synchronizing signal is the controllable sinusoidal signal of 50Hz amplitudes.
The trigger module 14 synchronous with power frequency of numerical control pulse signal generation module 13 is electrically connected, when power frequency synchronization trigger module 14
When receiving power frequency locking phase trigger command, numerical control pulse signal generation module is triggered at the setting phase of power frequency synchronizing signal
13 generate pulse signal.In a kind of preferred embodiment of the present invention, power frequency synchronization trigger module 14 is hardware trigger, Time delay
Less than 10ns, the precision of power frequency synchronizing signal is ± 0.1Hz.
Pulse signal and power frequency synchronizing signal are transmitted to D/A conversion unit 15 by two individual Channel Synchronous respectively,
The numerical data of pulse signal and power frequency synchronizing signal is converted to analog waveform by D/A conversion unit 15.
Input terminal of the output terminal of D/A conversion unit 15 respectively with amplitude control unit 16 is electrically connected, and is set according to amplitude
The amplitude of order, 16 pulse signals of amplitude control unit and power frequency synchronizing signal carries out separately adjustable.Of the invention a kind of excellent
It selects in embodiment, amplitude control unit 16 is programmable resistor array device.
The output terminal of amplitude control unit 16 is electrically connected respectively with pulse output end mouth 17 and power frequency synchronous port 18, pulse
17 output pulse signal of output port, power frequency synchronous port 18 export power frequency synchronizing signal.In a kind of preferred embodiment of the present invention
In, pulse output end mouth 17 and power frequency synchronous port 18 are bnc interface (basic network card interface), while with PD meter 2 to be measured
Connection, the pulse signal and power frequency synchronizing signal that two passages generate inject PD meter 2 to be measured, PD meter 2 to be measured are carried out simultaneously
Test.
Fig. 2 be a kind of application schematic diagram of multifunction digital PD meter calibrator provided in an embodiment of the present invention, such as Fig. 2
It is described, it, will when carrying out test calibration to PD meter using multifunction digital PD meter calibrator provided in an embodiment of the present invention
First computer 3 is connected by multifunction digital PD meter calibrator 1 with PD meter 2 to be measured.First computer 3 connects with control
Mouth 11 is communicatively coupled, the synchronous port of PD meter to be measured and the power frequency synchronous port of multifunction digital PD meter calibrator
18 are attached by bnc interface, and the discharge signal of PD meter to be measured gathers sensor or partial discharge port and multifunction digital
The pulse output end mouth 17 of PD meter calibrator is attached by bnc interface.
According to test assignment, corresponding waveform parameter setting command or transmitted waveform data are keyed in the first computer 3
File is transmitted to memory 12 by control interface 11, and memory 12, which caches it and exports to numerical control pulse signal, occurs mould
Block 13 or power frequency synchronization trigger module 14.According to the instruction of reception, numerical control pulse signal generation module 13 generates corresponding pulse
Signal, power frequency synchronization trigger module 14 generate the controllable sinusoidal signal of 50Hz amplitudes.When power frequency synchronization trigger module 14 receives
Numerical control pulse signal generation module 13 is triggered during power frequency locking phase trigger command, at the setting phase of power frequency synchronizing signal to send
Pulse signal, meanwhile, power frequency synchronization trigger module 14 sends power frequency synchronizing signal.
The pulse signal and power frequency synchronizing signal that two passages generate pass sequentially through D/A conversion unit 15 and amplitude control respectively
Unit 16 processed eventually by pulse output end mouth 17 and power frequency synchronous port 18, while injects PD meter 2 to be measured.Partial discharge to be measured
2 pulse signals of instrument and power frequency synchronizing signal are responded, and response results are transmitted to second computer 4, second computer 4
By response results compared with the standard value of each parameter, analyze, complete the performance test to PD meter 2 to be measured.
In embodiments of the present invention, the first computer 3 control numerical control pulse signal generation module 13 generates a variety of pulse letters
Number, realize the work that multinomial performance test and calibration are carried out to PD meter 2 to be measured.
In embodiments of the present invention, the Time delay of power frequency synchronization trigger module 14 is less than 10ns, power frequency synchronizing signal
Precision is ± 0.1Hz, and realization rushes that signal is synchronous with power frequency synchronizing signal, is simultaneously emitted by, realizes the synchronization to PD meter 2 to be measured
Performance, the test of phase acquisition accuracy.
In embodiments of the present invention, memory 12 stores live local discharge signal data, by playing back shelf depreciation mistake
Journey or a variety of partial discharge pulse's waveform patterns of simulation, realize the test and appraisal to 2 discharge mode recognition capability of PD meter to be measured.
The above is only the specific embodiment of the present invention, is made skilled artisans appreciate that or realizing this hair
It is bright.A variety of modifications of these embodiments will be apparent to one skilled in the art, it is as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide scope caused.
Claims (10)
1. a kind of multifunction digital PD meter calibrator, which is characterized in that including：Memory (12), numerical control pulse signal hair
Raw module (13), power frequency synchronization trigger module (14), D/A conversion unit (15), amplitude control unit (16) and control interface
(11), pulse output end mouth (17) and power frequency synchronous port (18)；
The control interface (11) is used to receive waveform parameter setting command and transmitted waveform data file；
The input of the output terminal of memory trigger module synchronous with the numerical control pulse signal generation module and power frequency respectively
End electrical connection is believed for caching output signal or exporting the discharge data of storage and user's Wave data to the numerical control pulse
Number module (13) synchronous with power frequency trigger module (14) occurs；
The output terminal of the numerical control pulse signal generation module and the power frequency synchronization trigger module respectively with the digital-to-analogue conversion
The input terminal electrical connection of unit, the numerical control pulse signal generation module (13) are used to generate controllable pulse signal；The work
The synchronous trigger module (14) of frequency is used to generate the controllable power frequency synchronizing signal of amplitude；
The numerical control pulse signal generation module (13) trigger module (14) electrical connection synchronous with the power frequency, the power frequency are synchronous
Trigger module (14) is used to trigger numerical control pulse signal generation module (13) production at the setting phase of the power frequency synchronizing signal
Raw pulse signal；
The D/A conversion unit (15) is used to the pulse signal and power frequency synchronizing signal being converted to simulation by numerical data
Waveform；
Input terminal of the output terminal of the D/A conversion unit respectively with the amplitude control unit is electrically connected, the amplitude control
Unit (16) is used to control the amplitude of the pulse signal and power frequency synchronizing signal；
The output terminal of the amplitude control unit respectively with the pulse output end mouth (17) and the power frequency synchronous port (18)
Electrical connection, the pulse output end mouth (17) are used for output pulse signal, and the power frequency synchronous port (18) is used to export power frequency
Synchronizing signal.
2. multifunction digital PD meter calibrator according to claim 1, which is characterized in that the power frequency synchronously triggers
Module (14) is hardware trigger, and Time delay is less than 10ns, and the precision of the power frequency synchronizing signal is ± 0.1Hz.
3. multifunction digital PD meter calibrator according to claim 1, which is characterized in that the memory (12),
Numerical control pulse signal generation module (13), power frequency synchronization trigger module (14), D/A conversion unit (15), amplitude control unit
(16) integrated setting.
4. multifunction digital PD meter calibrator according to claim 1, which is characterized in that the control interface
(11), pulse output end mouth (17) and power frequency synchronous port (18) are set using external mounting mode.
5. multifunction digital PD meter calibrator according to claim 1, which is characterized in that the controllable pulse letter
Number include the quantity of electric charge, rising edge, trailing edge, polarity, number, repetition rate and/or the controllable pulse signal of phase.
6. multifunction digital PD meter calibrator according to claim 1, which is characterized in that the power frequency synchronizing signal
For the controllable sinusoidal signal of 50Hz amplitudes.
7. multifunction digital PD meter calibrator according to claim 1, which is characterized in that the control interface (11)
For RJ45 interfaces.
8. multifunction digital PD meter calibrator according to claim 1, which is characterized in that the memory (12) is
DDR1, DDR2 and/or DDR3 memory.
9. multifunction digital PD meter calibrator according to claim 1, which is characterized in that the D/A conversion unit
(15) it is 9146 D/A conversion unit of high-speed AD.
10. multifunction digital PD meter calibrator according to claim 1, which is characterized in that the pulse output end
Mouth (17) and the power frequency synchronous port (18) are bnc interface.
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| CN201610059264.3A CN105510861B (en) | 2016-01-28 | 2016-01-28 | A kind of multifunction digital PD meter calibrator |
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| CN201610059264.3A CN105510861B (en) | 2016-01-28 | 2016-01-28 | A kind of multifunction digital PD meter calibrator |
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| CN105510861B true CN105510861B (en) | 2018-05-25 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054092A (en) * | 2016-05-23 | 2016-10-26 | 广东电网有限责任公司佛山供电局 | GIS partial discharge sensor sensitivity tester |
| CN108152773A (en) * | 2018-02-02 | 2018-06-12 | 昆明理工大学 | The impulse phase detection error caliberating device and scaling method of a kind of PD meter |
| CN111060786A (en) * | 2019-12-16 | 2020-04-24 | 山东康威通信技术股份有限公司 | Partial discharge generating device and method with adjustable discharge quantity and density based on phase |
| CN111426924A (en) * | 2020-05-13 | 2020-07-17 | 北京华电智成电气设备有限公司 | High-frequency partial discharge signal mode recognition function verification method and system |
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| JP2612643B2 (en) * | 1991-01-10 | 1997-05-21 | 東京電力株式会社 | Calibration method for partial discharge measurement sensitivity |
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| CN202189141U (en) * | 2010-12-31 | 2012-04-11 | 保定天威集团有限公司 | Calibrator for partial discharge detection equipment |
| CN203630331U (en) * | 2013-12-03 | 2014-06-04 | 国家电网公司 | Multifunctional partial discharge calibrator |
| CN205374712U (en) * | 2016-01-28 | 2016-07-06 | 云南电网有限责任公司电力科学研究院 | Appearance calibrator is put in multifunctional digital formula office |
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