CN208207122U - polarity tester - Google Patents
polarity tester Download PDFInfo
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- CN208207122U CN208207122U CN201820825879.7U CN201820825879U CN208207122U CN 208207122 U CN208207122 U CN 208207122U CN 201820825879 U CN201820825879 U CN 201820825879U CN 208207122 U CN208207122 U CN 208207122U
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Abstract
A kind of polarity tester, including signal source device and test device；First central processing unit is electrically connected signal source generating circuit, output signal switching circuit and the first wireless transport module；Signal source device includes signal source generating circuit, output signal switching circuit, the first central processing unit, the first wireless transport module and output terminal assembly；Test device includes signal processing circuit, the second central processing unit, touch screen, the second wireless transport module and input terminal component；Second central processing unit is electrically connected signal processing circuit, touch screen and the second wireless transport module；First wireless transport module is electrically connected with the second wireless transport module；Above-mentioned polarity tester, lower to personnel's test request, measurement process is simple, the measurement error that traditional artificial cooperation generates can be reduced, so that Detection accuracy is higher.
Description
Technical field
The utility model relates to power test technical fields, more particularly to a kind of polarity tester.
Background technique
The installment work of electric energy metering device, as an important component of gage work, installation it is correct with
No, most important to the correctly operation of electric energy metering device, the installment work of electric energy metering device is by electric power enterprise height weight
Depending on.Although the metering accuracy of the electric energy metering device after installation, can be guaranteed by the verification of calibration authority, with
This simultaneously, electric energy metering device wiring is correctly also to ensure that the important link of accurate measurement.
It is connect in electric link in electric energy metering device, dress table personnel need to check whether metering device polarity is correct, and polarity is
The no accurate main wiring condition including voltage transformer, current transformer and its secondary circuit etc., to guarantee to access electric energy meter
Voltage, current polarity it is correct.Polarity correctness directly influences the accuracy of metering, while also influencing whether metering dress
The safety set, whether reliability service etc..
The test of the accuracy of wiring at present is there are problems, and first, by working sense of responsibility, the business water of dress table personnel
The factors such as flat, work qualification influence, and personnel's test request is relatively high.Second, electric energy metering device wiring at present is corrected errors
Judgement checks, is mainly measured using multimeter, carries out " school line " to cable one by one in conjunction with intercom auxiliary, verification connects
Line square toes information checks wiring etc., measurement process using the real load such as conventional instrument instrument such as phase voltamograph, power utility check instrument
It is extremely onerous.Third, when carrying out polarity test work using direct current method, direct current method needs multiple dress table personnel cooperations to grasp
Make, alive personnel are applied in side indicates state by propagandaing directed to communicate " conjunction " " dividing ", and the other side combines sound to observe throw of pointer, together
When polarity correctness is judged according to throw of pointer, if two sides personnel's cooperation is asynchronous, or, noise dim by construction site
Miscellaneous environment influences, it is possible that erroneous judgement.Also, for changing bigger mutual inductor, multimeter throw of pointer is faint,
It is unfavorable for judging；The deflection of pointer is only in a flash in test process, it is difficult to keep effective state be supplied to dress table personnel into
Row judgement；Direct current method is once only capable of one winding of test or circuit, for three-phase and four-line user, need to carry out 6 measurements, efficiency is not
It is high.
These detection methods are higher to the skill requirement of dress table personnel, and measurement process is complex, and there is also detections
Not comprehensively, the disadvantages of Detection accuracy is lower, detection efficiency is lower, be not able to satisfy line requirements of one's work in school under new environment.?
Some special installation fields, existing operation mode more difficult satisfaction high to the installation requirement accuracy of electric energy metering device
Its demand.
Utility model content
Based on this, it is necessary to provide a kind of pair personnel's test request be lower, measurement process is relatively simple, Detection accuracy compared with
The high and higher polarity tester of detection efficiency.
A kind of polarity tester, including signal source device and test device；
The signal source device includes signal source generating circuit, output signal switching circuit, the first central processing unit, first
Wireless transport module and output terminal assembly；First central processing unit is electrically connected the signal source generating circuit, institute
State output signal switching circuit and first wireless transport module；The output terminal assembly includes that the first phase output voltage is mutual
Sensor output is high-end, the output of the second phase output voltage mutual inductor is high-end, the output of third phase output voltage mutual inductor is high-end, three-phase is total
With output voltage mutual inductor output low side, the output of the first phase output current transformer is high-end, the first phase output current transformer is defeated
Low side, the second phase output current transformer export high-end, the second phase output current transformer output low side, third phase output electricity out
Current transformer output is high-end, third phase output current transformer exports low side；The first phase output voltage mutual inductor output is high
End, the output of the second phase output voltage mutual inductor is high-end, the output of third phase output voltage mutual inductor is high-end, three-phase shares output voltage
Mutual inductor exports low side, the first phase output current transformer exports high-end, the first phase output current transformer and exports low side, second
It is defeated that the output of phase output current transformer is high-end, the second phase output current transformer exports low side, third phase output current transformer
High-end out and third phase output current transformer output low side is electrically connected with the output signal switching circuit.
The test device include signal processing circuit, the second central processing unit, touch screen, the second wireless transport module and
Input terminal component；Second central processing unit is electrically connected the signal processing circuit, touch screen and the second wireless biography
Defeated module；First wireless transport module is electrically connected with second wireless transport module；Input terminal component includes: first
Voltage input is high-end, second voltage input is high-end, tertiary voltage input is high-end, shares input low side, the first current clamp input terminal
Mouthful, the second current clamp input port and third input port, the first voltage input is high-end, second voltage input is high-end, the
Three voltage inputs are high-end, share input low side, the first current clamp input port, the second current clamp input port and third input terminal
Mouth is electrically connected with the signal processing circuit.
The signal source device further includes power supply in one of the embodiments, and the power supply is electrically connected described
One central processing unit and the signal source generating circuit.
First wireless transport module and second wireless transport module are bluetooth biography in one of the embodiments,
One or both of defeated module, ZigBee transmission module, GPRS module, wifi module and SMS module.
The voltage of the power supply is 9V in one of the embodiments,.
The power supply is lithium ion battery in one of the embodiments,.
The power supply is zinc-manganse dioxide dry cell in one of the embodiments,.
First central processing unit is single-chip microcontroller in one of the embodiments,.
Second central processing unit is single-chip microcontroller in one of the embodiments,.
The touch screen is capacitor touch-control display screen in one of the embodiments,.
The touch screen is electric resistance touch-control display screen in one of the embodiments,.
Above-mentioned polarity tester, including signal source device and test device, signal source device are located at voltage transformer high pressure
The high current side test device of side perhaps current transformer is located at the low current of voltage transformer low-pressure side or current transformer
Side.Square-wave signal is generated by the output signal switching circuit of signal source test device, and is connected to by output terminal assembly
In the equipment of voltage transformer high-pressure side or the high current side of current transformer；At the same time, the first central processing unit
The first wireless transport module can be controlled, square-wave signal is wirelessly transferred to second by second wireless sensor
Central processing unit.Equipment in the high current side for being located at voltage transformer high-pressure side or current transformer receives corresponding side
After wave signal, the equipment positioned at voltage transformer low-pressure side or the low current side of current transformer can be under the action of mutual inductor
The processing signal that receives that treated；With the equipment phase for the low current side for being located at voltage transformer low-pressure side or current transformer
The input terminal component of connection will handle signal, and the second central processing unit is transferred to after signal processing circuit is handled；It is described
Second central processing unit analysis processing signal and square-wave signal, so as to judge whether wiring polarity is correct, passes through touch screen
It can output test result.In this way, lower to personnel's test request, measurement process is simple, can reduce traditional artificial cooperation and produce
Raw measurement error, so that Detection accuracy is higher.Also, multiple ports are arranged in the output terminal assembly, can adapt in
Most three-phase and four-line users, once can be completed all measurements, so that detection efficiency is higher.
Detailed description of the invention
Fig. 1 is the module diagram of the polarity tester of an embodiment of the present invention；
Fig. 2 is the schematic diagram of the output terminal assembly of the polarity tester of an embodiment of the present invention；
Fig. 3 is the schematic diagram of the input terminal component of the polarity tester of an embodiment of the present invention.
Specific embodiment
It is for the ease of understanding the utility model, to keep the above objects, features, and advantages of the utility model brighter
It shows understandable, specific embodiment of the present utility model is described in detail with reference to the accompanying drawing.It illustrates in the following description
Many details give the better embodiment of the utility model in order to fully understanding the utility model in attached drawing.
But the utility model can be realized in many different forms, however it is not limited to embodiments described herein.On the contrary
Ground, the purpose of providing these embodiments is that making the disclosure of the utility model more thorough and comprehensive.This is practical
Novel to be implemented with being much different from other way described herein, those skilled in the art can be practical without prejudice to this
Similar improvement is done in the case where novel intension, therefore the utility model is not limited by the specific embodiments disclosed below.In addition,
Term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicate
The quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can explicitly or implicitly include to
Few this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three etc., unless
Separately there is clearly specific restriction." several " are meant that at least one in the description of the present invention, such as one, two
Deng unless otherwise specifically defined.It should be noted that when an element is considered as " connection " another element, it
It can be directly to another element or may be simultaneously present centering elements.Unless otherwise defined, used herein
All technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs.This
Term as used herein is only for the purpose of describing specific embodiments, it is not intended that in limitation the utility model.This
Term used in text " and/or " it include any and all combinations of one or more related listed items.
For example, a kind of polarity tester, including signal source device and test device, the signal source device include signal source
Generation circuit, output signal switching circuit, the first central processing unit, the first wireless transport module and output terminal assembly；It is described
First central processing unit is electrically connected the signal source generating circuit, the output signal switching circuit and described first wirelessly
Transmission module；The output terminal assembly includes that the first phase output voltage mutual inductor exports high-end, the second phase output voltage mutual inductance
Device output is high-end, the output of third phase output voltage mutual inductor is high-end, three-phase shares output voltage mutual inductor and exports low side, the first phase
Output current transformer output is high-end, the first phase output current transformer exports low side, the output of the second phase output current transformer
High-end, the second phase output current transformer output low side, third phase output current transformer export high-end, third phase and export electric current
Mutual inductor exports low side；The first phase output voltage mutual inductor output is high-end, the output of the second phase output voltage mutual inductor is high-end,
It is mutual that the output of third phase output voltage mutual inductor is high-end, three-phase shares output voltage mutual inductor output low side, the first phase output electric current
Sensor output is high-end, the first phase output current transformer exports low side, the second phase output current transformer exports high-end, the second phase
Output current transformer exports low side, third phase output current transformer exports the output of high-end and third phase output current transformer
Low side is electrically connected with the output signal switching circuit.The test device includes signal processing circuit, the second central processing
Device, touch screen, the second wireless transport module and input terminal component；Second central processing unit is electrically connected the signal
Processing circuit, touch screen and the second wireless transport module；First wireless transport module and second wireless transport module
Electrical connection；Input terminal component includes: that first voltage input is high-end, second voltage input is high-end, tertiary voltage input is high-end, altogether
It is defeated with input low side, the first current clamp input port, the second current clamp input port and third input port, the first voltage
Enter that the input of high-end, second voltage is high-end, tertiary voltage input is high-end, shares input low side, the first current clamp input port, second
Current clamp input port and third input port are electrically connected with the signal processing circuit.
In order to further illustrate above-mentioned polarity tester, another example is, referring to Fig. 1, polarity tester includes letter
Number source device and test device.The signal source device is electrically connected with the test device.Signal source device is located at mutual induction of voltage
The high current side test device of device high-pressure side perhaps current transformer is located at voltage transformer low-pressure side or current transformer
Low current side.
Referring to Fig. 1, the signal source device includes signal source generating circuit, output signal switching circuit, the first center
Processor, the first wireless transport module and output terminal assembly；First central processing unit is electrically connected the signal source
Generation circuit, the output signal switching circuit and first wireless transport module, that is, the signal source generating circuit, institute
It states output signal switching circuit and first wireless transport module is electrically connected respectively at first central processing unit.The letter
Number source generating circuit is used to test on-off in source and polarity chron generates square-wave signal, and in other words, the signal source generating circuit is used
Square-wave signal is generated under the control in first central processing unit.The signal switching circuit is used in first center
The square-wave signal that the signal source generating circuit generates is respectively corresponded in input to output terminal assemblies under the control of processor.
The equipment that the input terminal component is used to be connected to the high current side positioned at voltage transformer high-pressure side or current transformer
In.In this way, for square-wave signal to be passed to by the terminal assemblies to positioned at voltage transformer high-pressure side or Current Mutual Inductance
In the route of the equipment of the high current side of device.For another example, first central processing unit is single-chip microcontroller.
Referring to Fig. 2, output terminal assembly 13 includes that the first phase output voltage mutual inductor exports high-end 1, second phase output
Voltage transformer exports high-end 2, third phase output voltage mutual inductor and exports the shared output voltage mutual inductor output of high-end 3, three-phase
Low side 4, the first phase output current transformer export high-end 5, first phase output current transformer output low side 6, the output of the second phase
Current transformer exports high-end 7, second phase output current transformer output low side 8, third phase output current transformer output height
End 9, third phase output current transformer export low side 10；The first phase output voltage mutual inductor output high-end 1, second is mutually defeated
It is defeated that voltage transformer output is high-end 2 out, the output of third phase output voltage mutual inductor is high-end 3, three-phase shares output voltage mutual inductor
It is mutually defeated to export high-end 5, first phase output current transformer output low side 6, second for low side 4, the first phase output current transformer out
Current transformer exports high-end 7, second phase output current transformer output low side 8, the output of third phase output current transformer out
High-end 9 and third phase output current transformer output low side 10 be electrically connected with the output signal switching circuit.In this way, three-phase
It is mutual for exporting high-end 1, second phase output voltage with a phase output voltage mutual inductor to share output voltage mutual inductor output low side 4
Sensor output high-end 2 and/or high-end 3 forming circuit of third phase output voltage mutual inductor output, it is mutual positioned at voltage when being accessed
When in the equipment of sensor high-pressure side or the high current side of current transformer, square-wave signal is transferred to positioned at voltage transformer height
It presses in the corresponding line in the equipment of the high current side of side or current transformer.The output of first phase output current transformer is high-end
5 and first phase output current transformer output low side 6 be formed into a loop；Second phase output current transformer output high-end 7 and second
Phase output current transformer exports low side forming circuit；Third phase output current transformer output high-end 9 and third phase output electricity
Current transformer exports low side 10 and is formed into a loop, when access positioned at the high electric of voltage transformer high-pressure side or current transformer
When flowing in the equipment of side, square-wave signal is transferred to positioned at voltage transformer high-pressure side or the high current side of current transformer
In corresponding line in equipment.It so, it is possible to be adapted to most three-phase and four-line users, all measurements once can be completed, thus
Detection efficiency is higher.For another example, output terminal assembly further includes the first mounting plate, the output of the first phase output voltage mutual inductor is high-end,
It is mutual that the output of second phase output voltage mutual inductor is high-end, the output of third phase output voltage mutual inductor is high-end, three-phase shares output voltage
Sensor exports low side, the first phase output current transformer exports high-end, the first phase output current transformer and exports low side, the second phase
Output current transformer output is high-end, the second phase output current transformer exports low side, the output of third phase output current transformer
High-end and third phase output current transformer output low side is all set on first mounting plate.For another example, as described above with
" end " ending or the word to be ended up with " port " are it can be appreciated that " connecting terminal ".
Referring to Fig. 1, the test device includes signal processing circuit, the second central processing unit, touch screen, second
Wireless transport module and input terminal component；Second central processing unit is electrically connected the signal processing circuit, touch-control
Screen and the second wireless transport module, that is, the signal processing circuit, touch screen and the second wireless transport module are respectively at described the
The electrical connection of two central processing units, the signal processing circuit connect the input terminal component.First wireless transport module
It is electrically connected with second wireless transport module.In this way, by the second transmission module of setting, the output letter of signal source test device
Number switching circuit generates square-wave signal, and is connected to by output terminal assembly mutual positioned at voltage transformer high-pressure side or electric current
In the equipment of the high current side of sensor；At the same time, the first central processing unit can control the first wireless transport module and believe square wave
Number the second central processing unit is wirelessly transferred to by second wireless sensor.It is being located at voltage transformer high pressure
After the equipment of side or the high current side of current transformer receives corresponding square-wave signal, be located at voltage transformer low-pressure side or
The equipment of the low current side of person's current transformer can receive that treated under the action of mutual inductor processing signal；It is electric with being located at
The input terminal component that the equipment of the low current side of pressure mutual inductor low-pressure side or current transformer is connected will handle signal, pass through
The second central processing unit is transferred to after crossing signal processing circuit processing；The second central processing unit analysis processing signal and square wave
Signal can output test result by touch screen so as to judge whether wiring polarity is correct.In this way, testing personnel
It is required that lower, measurement process is simple, the measurement error that traditional artificial cooperation generates can be reduced, so that Detection accuracy is higher.
For another example, second central processing unit is single-chip microcontroller.For another example, the touch screen is touching display screen.For another example, the touch screen is
Capacitor touch-control display screen or the electric resistance touch-control display screen.
Referring to Fig. 3, input terminal component 14 includes:, first voltage input is high-end 15, second voltage input is high-end 16, the
Three voltage inputs are high-end 17, share input low side 18, the first current clamp input port 19, the second current clamp input port 20 and the
Three input ports 21, first voltage input is high-end 15, second voltage input is high-end 16, tertiary voltage input is high-end 17, altogether
And institute with input low side 18, the first current clamp input port 19, the second current clamp input port 20 and third input port 21
State signal processing circuit electrical connection.In this way, share input low side 18 and first voltage input is high-end 15, second voltage input it is high-end
16 and/or high-end 17 forming circuit of tertiary voltage input, when access positioned at voltage transformer low-pressure side or Current Mutual Inductance
When in the equipment of the low current side of device, the equipment in the high current side for being located at voltage transformer high-pressure side or current transformer is connect
After receiving corresponding square-wave signal, the equipment positioned at voltage transformer low-pressure side or the low current side of current transformer can be mutual
The processing signal that receives that treated under the action of sensor；With the low electricity for being located at voltage transformer low-pressure side or current transformer
The input terminal component that the equipment of stream side is connected will handle signal, and the second center is transferred to after signal processing circuit is handled
Processor；The second central processing unit analysis processing signal and square-wave signal, so as to judge whether wiring polarity is correct,
It can output test result by touch screen.In this way, lower to personnel's test request, measurement process is simple, can reduce tradition
The measurement error that artificial cooperation generates, so that Detection accuracy is higher.Also, multiple ports are arranged in the output terminal assembly,
It can adapt to all measurements once can be completed, so that detection efficiency is higher in most three-phase and four-line users.For another example, input terminal
Sub-component further includes the second mounting plate, and first voltage input is high-end, second voltage input is high-end, tertiary voltage input is high-end, altogether
Described the is all set in input low side, the first current clamp input port, the second current clamp input port and third input port
On two mounting plates.For another example, it is ended up or with the word of " port " ending with " end " it can be appreciated that " terminals as described above
Son ".
It should be noted that the touch screen can also be used in the test instruction for receiving user, in this way, user passes through touch screen
Test instruction can be assigned.For touch screen after acceptance test instruction, test instruction is passed through the second nothing by the second central processing unit
Line transmission module is sent to first wireless transport module, and first central processing unit is instructed according to the test received,
It controls the signal source generating circuit and output signal switching circuit generates square-wave signal, polarity test operation is started with this.
In one embodiment, the signal source device further includes power supply, and the power supply is electrically connected first centre
Manage device and the signal source generating circuit.In this way, providing power supply to first central processing unit by power supply, and for being
The signal source generating circuit provides electric power.For another example, the voltage of the power supply is 9V.For another example, the power supply is lithium ion battery.
For another example, the power supply is zinc-manganse dioxide dry cell.It so, it is possible to provide preferable electric power effect.For another example, the first wireless transmission mould
Block and second wireless transport module are Bluetooth communication modules, ZigBee transmission module, GPRS module, wifi module and SMS
One or both of (Short Messaging Service) module.It so, it is possible preferably to be wirelessly transferred or led to
Letter.
Above-mentioned polarity tester, including signal source device and test device, signal source device are located at voltage transformer high pressure
The high current side test device of side perhaps current transformer is located at the low current of voltage transformer low-pressure side or current transformer
Side.Square-wave signal is generated by the output signal switching circuit of signal source test device, and is connected to by output terminal assembly
In the equipment of voltage transformer high-pressure side or the high current side of current transformer；At the same time, the first central processing unit
The first wireless transport module can be controlled, square-wave signal is wirelessly transferred to second by second wireless sensor
Central processing unit.Equipment in the high current side for being located at voltage transformer high-pressure side or current transformer receives corresponding side
After wave signal, the equipment positioned at voltage transformer low-pressure side or the low current side of current transformer can be under the action of mutual inductor
The processing signal that receives that treated；With the equipment phase for the low current side for being located at voltage transformer low-pressure side or current transformer
The input terminal component of connection will handle signal, and the second central processing unit is transferred to after signal processing circuit is handled；It is described
Second central processing unit analysis processing signal and square-wave signal, so as to judge whether wiring polarity is correct, passes through touch screen
It can output test result.In this way, lower to personnel's test request, measurement process is simple, can reduce traditional artificial cooperation and produce
Raw measurement error, so that Detection accuracy is higher.Also, multiple ports are arranged in the output terminal assembly, can adapt in
Most three-phase and four-line users, once can be completed all measurements, so that detection efficiency is higher.
When the utility model metering device polarity tester measures: signal source device completes wiring in primary side, that is,
Three pressure-wires connect corresponding first phase, the second phase, third phase pressure-wire when phase three-wire three, and it is low that two current lines connect current transformer
End, pressure-wire connects the first phase, the second phase, third phase and N phase (as ground wire or zero curve) pressure-wire, three electricity when three-phase and four-line
Streamline connects current transformer low side；Test device pressure-wire connects the secondary electric energy meter voltage wiring terminal ined succession of mutual inductor, electricity
Stream is sampled using current clamp, does not have to disconnect secondary circuit.It checks after test device starting up and is connected with signal source wireless communication
It is whether normal, it is read according to signal source toggle switch position and returns to wiring classification.User clicks in the touch screen of test device and surveys
After runin is begun, test device is determined according to wiring classification needs mutual inductor to be tested, successively sends and orders to signal source device, letter
Number source device receives exported according to order switching after order required for signal to mutual inductor primary side, and tell test device
Order is received, the incoming line of test device is tested in the secondary side of mutual inductor simultaneously, after completing phase output and test
Test lead records current mutual inductor measuring test result and continues to send the test command of next mutual inductor.Complete institute's mutual inductor in need
After test, test lead carries out processing analysis to all mutual inductor measuring test results, obtains voltage current transformer polarity, phase sequence wiring
As a result, display wiring diagram and table, realizes the one-touch check and correction of all mutual inductor interstar connections.
The utility model metering device polarity tester, signal source device and the design of test device fission, signal source device
Can be convenient and be placed in high-pressure side, test device, which can be convenient, is placed in electric energy meter tail, by wireless communication complete signal source output,
The process of test lead test, it can be achieved that phase three-wire three and the three-phase and four-line difference mode of connection after the completion of primary complete test
The differentiation of the wiring including polarity, on-off, phase sequence of lower three-phase voltage current mutual inductor, and test result can be passed through coloured silk
Color display screen carries out explanatory note and wiring diagram is intuitively shown.Artificial judgment is avoided, removal environment influences, and realizes automatic identification
With judgement, the accuracy of metering device wiring verification is improved, wiring checking work is made to become efficiently simple.
It should be noted that signal source generating circuit, output signal switching circuit, the first central processing unit, first are wirelessly
Transmission module, signal processing circuit, the second central processing unit, touch screen and the second wireless transport module are the prior art, this
Utility model requires nothing more than the structure and its connection relationship of protection specific product herein.
It should be noted that electric energy metering device installs an important component as gage work, by electric power
Enterprise pays much attention to.The metering accuracy of electric energy metering device can be guaranteed by the verification of calibration authority, but electric simultaneously
Energy metering device wiring is correctly also to ensure that the important link of accurate measurement, the accuracy of field connection, by the work of dress table personnel
Making the factors such as sense of responsibility, professional skill, work qualification influences.The positive erroneous judgement inspection of electric energy metering device wiring at present utilizes
Multimeter (or logical lamp) amount on-off assists a cable progress " school line " one by one, verification wiring square toes information, utilization plus intercom
The reality load such as conventional instrument instrument such as phase voltamograph, power utility check instrument checks wiring etc., these detection methods are to personnel's technical ability
More demanding, consuming time is long, detection is not comprehensive, and risk is larger, can not be able to satisfy new environment the disadvantages of fault location
Lower school line requirements of one's work especially connect electric profession to dress table, it is desirable that accuracy is higher, sets without the special of particular requirement is met
It is standby.
And electric link is connect in dress table, whether dress table personnel need to check metering device polarity correct, mainly include voltage, electricity
Current transformer and its secondary circuit, voltage, the current polarity to guarantee access electric energy meter are correct.Polarity correctness, direct shadow
Ring to metering accuracy, while also influence whether metering device safety and whether being capable of reliability service.
In actual operation, polarity test generallys use direct current method and carries out polarity test work, current polarity test master
Will there is following problems: (1) by metering cabinet mounting condition, size etc. limited, dress table personnel creep into it is inconvenient in cabinet,
It is easy to cause scraping collision etc. to injure dress table personnel.(2) direct current method needs to fill table personnel cooperation and operates, and primary side applies voltage
Personnel indicate state by propagandaing directed to communicate " conjunction " " dividing ", the personnel for observing throw of pointer combine sound, while according to throw of pointer
Judge polarity correctness, if cooperation is asynchronous, or environment dim by construction site, noisy is influenced, and may be gone out
Existing erroneous judgement；(3) for changing bigger mutual inductor, multimeter throw of pointer is faint, is unfavorable for judging；(4) pointer is inclined
Turn only in a flash, it is difficult to keep effective state to be supplied to dress table personnel and judge；(5) direct current method is once only capable of test one
A winding or circuit need to carry out 6 measurements for three-phase and four-line user, inefficient；(6) it when being measured to CT polarity, needs
The current line for accessing electric energy meter is disconnected, milliammeter is sealed in, is accessed again after the completion of test, it can not be complete in ammeter wiring
In the case of carry out polarity and wiring verification.(7) live O&M condition is poor, easy to damage in pointer multimeter use, such as screen
Fragmentation, carries and keeping is inconvenient.
The utility model can judge automatically metering device secondary circuit polarity by using above-mentioned polarity tester.Energy
The test and measuring device polarity test work simultaneously of more than enough circuit；It being capable of non-intrusion type verification metering device secondary circuit polarity；Energy
It enough solves remote polarity and checks problem；Influence caused by can also eliminating because of personnel's cooperation stationary problem；The pole of the utility model
Property tester, including signal source device and test device；Signal source device includes signal source generating circuit, output signal switching electricity
Road, the first central processing unit and the first wireless module；Test device includes voltage and current input signal process circuit, the second center
Processor, display and the second wireless module.First wireless module of signal source device is connected to the first central processing unit, and first
Central processing unit receives the communication instruction that the first wireless module receives, and successively switches three-phase electricity after the parsing of the first central processing unit
Current voltage exports corresponding output wiring terminal, and controls signal source and generate voltage or current signal output；Test device passes through touching
Screen display operation is touched, after user's click starts test, wireless module sends test command to signal source, then passes through input signal
Process circuit carries out signal processing, and signal send to central processing unit processing and analyzes after processing, obtains test result, finally will test
As a result it shows on the screen.Metering device polarity tester signal source tests on-off and polarity chron generates square-wave signal, square wave letter
Number output, generating different voltage signal and current signal according to mutual inductor difference to be tested, to be input to tested mutual inductor primary
Side.Test lead input signal process circuit access mutual inductor is secondary or sampling current pincers are secondary, passes through filtering, shaping, amplification pair
Signal is handled, and central processing unit is entered after signal processing, by logic judgment, analyzes and determines that wiring condition obtains test knot
Fruit shows in display screen.For another example, the display screen is touch screen.
When the utility model metering device polarity tester measures: signal source device completes wiring in primary side, that is,
Three pressure-wires connect corresponding first phase, the second phase, third phase pressure-wire when phase three-wire three, and it is low that two current lines connect current transformer
End, pressure-wire connects the first phase, the second phase, third phase and N phase (as ground wire or zero curve) pressure-wire, three electricity when three-phase and four-line
Streamline connects current transformer low side；Test device pressure-wire connects the secondary electric energy meter voltage wiring terminal ined succession of mutual inductor, electricity
Stream is sampled using current clamp, does not have to disconnect secondary circuit.It checks after test device starting up and is connected with signal source wireless communication
It is whether normal, it is read according to signal source toggle switch position and returns to wiring classification.User clicks in the touch screen of test device and surveys
After runin is begun, test device is determined according to wiring classification needs mutual inductor to be tested, successively sends and orders to signal source device, letter
Number source device receives exported according to order switching after order required for signal to mutual inductor primary side, and tell test device
Order is received, the incoming line of test device is tested in the secondary side of mutual inductor simultaneously, after completing phase output and test
Test lead records current mutual inductor measuring test result and continues to send the test command of next mutual inductor.Complete institute's mutual inductor in need
After test, test lead carries out processing analysis to all mutual inductor measuring test results, obtains voltage current transformer polarity, phase sequence wiring
As a result, display wiring diagram and table, realizes the one-touch check and correction of all mutual inductor interstar connections.
The utility model metering device polarity tester, signal source device and the design of test device fission, signal source device
Can be convenient and be placed in high-pressure side, test device, which can be convenient, is placed in electric energy meter tail, by wireless communication complete signal source output,
The process of test lead test, it can be achieved that phase three-wire three and the three-phase and four-line difference mode of connection after the completion of primary complete test
The differentiation of the wiring including polarity, on-off, phase sequence of lower three-phase voltage current mutual inductor, and test result can be passed through coloured silk
Color display screen carries out explanatory note and wiring diagram is intuitively shown.Artificial judgment is avoided, removal environment influences, and realizes automatic identification
With judgement, the accuracy of metering device wiring verification is improved, wiring checking work is made to become efficiently simple.
Compared with prior art, the utility model has the advantages that (1) liberates the productive forces, and reduces human cost with certainly
Dynamic judgement replaces the artificial judgment mode of script, is more suitable for live use, by 3-4 dress table personnel's compounding practices, is changed to only
Need one man operation, people monitoring.(2) verification efficiency is improved, improves working efficiency primary connection, so that it may to phase three-wire three and three
The polarity phase sequence of voltage current transformer is checked simultaneously under the four line difference mode of connection of phase；Using 3 groups of Wiring ports, primary connection
It can complete the one-touch check and correction to voltage current transformer polarity, phase sequence wiring, not need one by one conducting wire, one by one winding
Verification.(3) reduce False Rate, promoted O&M quality utilize wireless communication technique, test lead control signal source, automatic synchronization, from
Dynamic judgement replaces artificial judgment, risk caused by reducing because of cooperation；May be implemented by visualization terminal can to field connection
Depending on changing, intuitive display is realized to field connection situation, to reduce the erroneous judgement of dress table personnel, guarantees that polarity verification is accurate.
(4) non-intrusion type is checked, and is reduced secondary false current wiring check and is sampled using split core type current transformer, is completed in dress table wiring
After checked, audit process avoids the wiring process after the completion of verification from secondary mistake occur without unlocking secondary circuit conducting wire.
(5) problem is checked at a distance, is solved to use communication between O&M problem signal source and test lead, can be not only applicable in
The metering device of placement is concentrated in electric energy meter, mutual inductor, while being suitable for the metering of substation electric energy meter, mutual inductor dispersion installation
The verification of device polarity.
Above-mentioned polarity tester, including signal source device and test device, signal source device are located at voltage transformer high pressure
The high current side test device of side perhaps current transformer is located at the low current of voltage transformer low-pressure side or current transformer
Side.Square-wave signal is generated by the output signal switching circuit of signal source test device, and is connected to by output terminal assembly
In the equipment of voltage transformer high-pressure side or the high current side of current transformer；At the same time, the first central processing unit
The first wireless transport module can be controlled, square-wave signal is wirelessly transferred to second by second wireless sensor
Central processing unit.Equipment in the high current side for being located at voltage transformer high-pressure side or current transformer receives corresponding side
After wave signal, the equipment positioned at voltage transformer low-pressure side or the low current side of current transformer can be under the action of mutual inductor
The processing signal that receives that treated；With the equipment phase for the low current side for being located at voltage transformer low-pressure side or current transformer
The input terminal component of connection will handle signal, and the second central processing unit is transferred to after signal processing circuit is handled；It is described
Second central processing unit analysis processing signal and square-wave signal, so as to judge whether wiring polarity is correct, passes through touch screen
It can output test result.In this way, lower to personnel's test request, measurement process is simple, can reduce traditional artificial cooperation and produce
Raw measurement error, so that Detection accuracy is higher.Also, multiple ports are arranged in the output terminal assembly, can adapt in
Most three-phase and four-line users, once can be completed all measurements, so that detection efficiency is higher.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.It should be noted that " in an embodiment ", " example of the application
Such as ", " for another example ", it is intended to the application is illustrated, rather than for limiting the application.Embodiment described above only table
The several embodiments of the utility model are reached, the description thereof is more specific and detailed, and but it cannot be understood as to practical
The limitation of new patent range.It should be pointed out that for those of ordinary skill in the art, it is practical new not departing from this
Under the premise of type is conceived, various modifications and improvements can be made, and these are all within the protection scope of the present invention.Therefore,
The scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of polarity tester characterized by comprising
Signal source device, the signal source device include signal source generating circuit, output signal switching circuit, the first central processing
Device, the first wireless transport module and output terminal assembly；First central processing unit is electrically connected the signal source and generates
Circuit, the output signal switching circuit and first wireless transport module；The output terminal assembly includes first mutually defeated
Voltage transformer output is high-end out, the output of the second phase output voltage mutual inductor is high-end, the output of third phase output voltage mutual inductor is high
End, three-phase share output voltage mutual inductor output low side, the first phase output current transformer exports high-end, the first phase and exports electric current
Mutual inductor exports low side, the second phase output current transformer exports high-end, the second phase output current transformer and exports low side, third
The output of phase output current transformer is high-end and third phase output current transformer exports low side；The first phase output voltage mutual inductance
Device output is high-end, the output of the second phase output voltage mutual inductor is high-end, the output of third phase output voltage mutual inductor is high-end, three-phase shares
Output voltage mutual inductor exports low side, the first phase output current transformer exports high-end, the first phase output current transformer output
Low side, the output of the second phase output current transformer is high-end, the second phase output current transformer exports low side, third phase exports electric current
Mutual inductor output is high-end and third phase output current transformer output low side is electrically connected with the output signal switching circuit；
Test device, the test device include signal processing circuit, the second central processing unit, touch screen, the second wireless transmission
Module and input terminal component；Second central processing unit is electrically connected the signal processing circuit, touch screen and second
Wireless transport module；First wireless transport module is electrically connected with second wireless transport module；The input terminal subgroup
Part includes: that first voltage input is high-end, second voltage input is high-end, tertiary voltage input is high-end, shares input low side, the first electricity
Stream pincers input port, the second current clamp input port and third input port, the first voltage input is high-end, second voltage is defeated
Enter the input of high-end, tertiary voltage is high-end, share input low side, the first current clamp input port, the second current clamp input port and
Third input port is electrically connected with the signal processing circuit.
2. polarity tester according to claim 1, which is characterized in that the signal source device further includes power supply, described
Power supply is electrically connected first central processing unit and the signal source generating circuit.
3. polarity tester according to claim 1, which is characterized in that first wireless transport module and described second
Wireless transport module is one of Bluetooth communication modules, ZigBee transmission module, GPRS module, wifi module and SMS module
Or two kinds.
4. polarity tester according to claim 2, which is characterized in that the voltage of the power supply is 9V.
5. polarity tester according to claim 4, which is characterized in that the power supply is lithium ion battery.
6. polarity tester according to claim 4, which is characterized in that the power supply is zinc-manganse dioxide dry cell.
7. polarity tester according to claim 1, which is characterized in that first central processing unit is single-chip microcontroller.
8. polarity tester according to claim 1, which is characterized in that second central processing unit is single-chip microcontroller.
9. polarity tester according to claim 1, which is characterized in that the touch screen is capacitor touch-control display screen.
10. polarity tester according to claim 1, which is characterized in that the touch screen is electric resistance touch-control display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820825879.7U CN208207122U (en) | 2018-05-29 | 2018-05-29 | polarity tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820825879.7U CN208207122U (en) | 2018-05-29 | 2018-05-29 | polarity tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208207122U true CN208207122U (en) | 2018-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820825879.7U Active CN208207122U (en) | 2018-05-29 | 2018-05-29 | polarity tester |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752628A (en) * | 2019-01-15 | 2019-05-14 | 国网辽宁省电力有限公司鞍山供电公司 | A kind of multifunctional mutual-inductor polarity test instrument based on embedded RTU |
| CN110058188A (en) * | 2019-05-24 | 2019-07-26 | 国网江苏省电力有限公司镇江供电分公司 | The active detector of electric energy metering device |
| CN110596522A (en) * | 2019-11-06 | 2019-12-20 | 国网新疆电力有限公司阿克苏供电公司 | Portable wireless current transformer polarity testing device |
| CN112433180A (en) * | 2020-11-04 | 2021-03-02 | 国网北京市电力公司 | Intelligent wiring detector for electric energy meter |
| CN115754892A (en) * | 2023-01-06 | 2023-03-07 | 山东计保电气有限公司 | Electric energy metering line checking and error correcting method and device |
-
2018
- 2018-05-29 CN CN201820825879.7U patent/CN208207122U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752628A (en) * | 2019-01-15 | 2019-05-14 | 国网辽宁省电力有限公司鞍山供电公司 | A kind of multifunctional mutual-inductor polarity test instrument based on embedded RTU |
| CN109752628B (en) * | 2019-01-15 | 2024-03-19 | 国网辽宁省电力有限公司鞍山供电公司 | Multifunctional mutual inductor polarity tester based on embedded RTU |
| CN110058188A (en) * | 2019-05-24 | 2019-07-26 | 国网江苏省电力有限公司镇江供电分公司 | The active detector of electric energy metering device |
| CN110596522A (en) * | 2019-11-06 | 2019-12-20 | 国网新疆电力有限公司阿克苏供电公司 | Portable wireless current transformer polarity testing device |
| CN112433180A (en) * | 2020-11-04 | 2021-03-02 | 国网北京市电力公司 | Intelligent wiring detector for electric energy meter |
| CN115754892A (en) * | 2023-01-06 | 2023-03-07 | 山东计保电气有限公司 | Electric energy metering line checking and error correcting method and device |
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Address after: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Patentee after: XI'AN SHUANGYING TECHNOLOGY CO.,LTD. Address before: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee before: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Patentee before: XI'AN SHUANGYING TECHNOLOGY CO.,LTD. |
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Effective date of registration: 20230629 Address after: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Patentee after: XI'AN SHUANGYING TECHNOLOGY CO.,LTD. Address before: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. Patentee before: XI'AN SHUANGYING TECHNOLOGY CO.,LTD. |
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