CN107102289A - A kind of measurement loop wiring error determination methods and device - Google Patents
A kind of measurement loop wiring error determination methods and device Download PDFInfo
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- CN107102289A CN107102289A CN201710462582.9A CN201710462582A CN107102289A CN 107102289 A CN107102289 A CN 107102289A CN 201710462582 A CN201710462582 A CN 201710462582A CN 107102289 A CN107102289 A CN 107102289A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
A kind of measurement loop wiring error determination methods of disclosure and device, this method mainly include：By during cycle emitting voltage/current test signal；Obtain the cycle quantity of the test signal and the corresponding cycle start-phase of the test signal；Receive feedback signal；Obtain the cycle quantity of the feedback signal；According to the cycle quantity of the test signal and the cycle quantity of the feedback signal, the judgement signal that phase isopen is in the test signal is filtered out；Obtain the corresponding cycle start-phase for judging signal；According to the corresponding cycle start-phase of the test signal and the corresponding cycle start-phase of the judgement signal, wiring correctness is judged；Export testing result.It can effectively solve the problem that the problem of existing detection method efficiency is low.
Description
Technical field
The application is related to technical field of electrical measurement, more particularly to a kind of measurement loop wiring error determination methods and dress
Put.
Background technology
Electric power meter includes metering voltage, current transformer and its secondary circuit, electric energy metering cabinet etc., for
Hair in power generation, between, three departments, amount of electrical power is to measuring calculating, during electric power meter correct wiring
Ensure the necessary condition of accurate measurement, electric power meter must carry out wiring check before operation.
Before not come into operation for new clothes electric power meter, due to can not directly carry out charging operation, so can not be according to
Field apparatus is ask to differentiate the wiring correctness of new clothes electric power meter.Generally using the artificial on-off function using universal meter
The wiring correctness of new clothes electric power meter is judged, it is necessary to disconnect secondary circuit and electricity during verification wiring correctness
The coupling part of pressure/current transformer.Disconnecting wire causes physical state at conductor compression jointing to change, because site environment is mixed and disorderly,
Easily there is wire virtual connection, miss or touch adjacent conductor position, produce the problems such as short circuit, open circuit.
, there are different practical problems in diverse location residing for electric power meter.For the electric energy metrical dress in plant stand side
Put, because secondary circuit distance is longer, several staff are needed when checking wiring correctness, and company is needed in order to form loop
Ground wire, but can only be linked up between plant stand and controllers by telecommunication, easily go wrong, cause to check and lose
Lose；For the electric power meter in customer side, because the design of electric energy metering cabinet is universal very narrow and small, to work on the spot people
The activity of member causes many restrictions, and batch meter is typically mounted on stand eminence, adds the work that staff disconnects wire
Industry difficulty.
The content of the invention
The application provides a kind of measurement loop wiring error determination methods and device, low to solve existing detection method efficiency
The problem of.
In a first aspect, this application provides a kind of measurement loop wiring error determination methods, this method includes：
By during cycle emitting voltage/current test signal；
Obtain the cycle quantity of the test signal and the corresponding cycle start-phase of the test signal；
Receive feedback signal；
Obtain the cycle quantity of the feedback signal；
According to the cycle quantity of the test signal and the cycle quantity of the feedback signal, filter out and believe with the test
Number be in phase isopen judgement signal；
Obtain the corresponding cycle start-phase for judging signal；
According to the corresponding cycle start-phase of the test signal and the corresponding cycle start-phase of the judgement signal, sentence
Disconnected wiring correctness；
Export testing result.
Alternatively, it is described by during cycle emitting voltage/current test signal, in addition to：
Amplify the test signal.
Alternatively, the corresponding cycle start-up phase of the cycle quantity and the test signal for obtaining the test signal
Position；
The cycle quantity of the test signal includes：1st, 2 or 3, three kinds of situations；
The corresponding cycle start-phase of the test signal is 0 degree.
Alternatively, the cycle quantity and the cycle quantity of the feedback signal according to the test signal, is filtered out
The judgement signal of phase isopen is in the test signal, in addition to：
Judge the test signal cycle quantity and the feedback signal cycle quantity it is whether equal；
If equal, the feedback signal is the judgement signal.
Alternatively, the corresponding cycle start-phase and the corresponding cycle of the judgement signal according to the test signal
Start-phase, judges wiring correctness, in addition to：
Judging the corresponding cycle start-phase of the test signal and the corresponding cycle start-phase of the judgement signal is
It is no consistent；
If consistent, the test signal is consistent with the polarity of the judgement signal, and wiring is correct；
If it is inconsistent, the test signal is different from the polarity of the judgement signal, wiring error.
Second aspect, present invention also provides a kind of measurement loop wiring error judgment means, the device includes：
Transmitter unit, for by during cycle emitting voltage/current test signal；
First acquisition unit, the corresponding cycle of cycle quantity and the test signal for obtaining the test signal rises
Beginning phase；
Receiving unit, for receiving feedback signal；
Second acquisition unit, the cycle quantity for obtaining the feedback signal；
Screening unit, for the cycle quantity and the cycle quantity of the feedback signal according to the test signal, screening
Go out to be in the judgement signal of phase isopen with the test signal；
3rd acquiring unit, the corresponding cycle start-phase for obtaining the judgement signal；
First judging unit, for the corresponding cycle start-phase and pair of the judgement signal according to the test signal
Cycle start-phase is answered, wiring correctness is judged；
Output unit, for exporting testing result.
Alternatively, the transmitter unit, in addition to：
Amplifying unit, for amplifying the test signal.
Alternatively, the first acquisition unit, for the cycle quantity for obtaining the test signal and the test
The corresponding cycle start-phase of signal；
The cycle quantity of the test signal includes：1st, 2 or 3, three kinds of situations；
The corresponding cycle start-phase of the test signal is 0 degree.
Alternatively, the screening unit, for the cycle quantity according to the test signal and the week of the feedback signal
Wave number amount, filters out the judgement signal that phase isopen is in the test signal, in addition to：
Second judging unit, for judging that the cycle quantity of the test signal and the cycle quantity of the feedback signal is
It is no equal；
If the cycle quantity of the test signal and the cycle quantity of the feedback signal are equal, the feedback signal
For the judgement signal.
Alternatively, first judging unit, for the corresponding cycle start-phase according to the test signal and described
Judge the corresponding cycle start-phase of signal, judge wiring correctness, in addition to：
3rd judging unit, for judging the corresponding cycle start-phase of the test signal and pair of the judgement signal
Answer cycle start-phase whether consistent；
If consistent, the test signal is consistent with the polarity of the judgement signal, and wiring is correct；
If it is inconsistent, the test signal is different from the polarity of the judgement signal, wiring error.
From above technology, the application provides a kind of measurement loop wiring error determination methods and device, by preset week
Phase emitting voltage/current test signal；The corresponding cycle of the cycle quantity and the test signal that obtain the test signal rises
Beginning phase；Receive feedback signal；Obtain the cycle quantity of the feedback signal；According to the cycle quantity of the test signal and institute
The cycle quantity of feedback signal is stated, the judgement signal that phase isopen is in the test signal is filtered out；Obtain the judgement
The corresponding cycle start-phase of signal；According to the corresponding cycle start-phase of the test signal and the correspondence of the judgement signal
Cycle start-phase, judges wiring correctness；Export testing result.The method and device that the embodiment of the present application is provided can be in nothing
It need to disconnect between secondary circuit and voltage/current transformer in the case of wire, be connect by the transmission of voltage/current signals
Line correction judgement, saves and manually disconnects wire step, so as to improve detection efficiency.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the application, letter will be made to the required accompanying drawing used in embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other accompanying drawings can also be obtained according to these accompanying drawings.
A kind of flow chart for measurement loop wiring error determination methods that Fig. 1 provides for the embodiment of the present application；
A kind of flow chart for measurement loop wiring error determination methods amplified signal that Fig. 2 provides for the embodiment of the present application；
Fig. 3 judges the flow of signal for a kind of measurement loop wiring error determination methods screening that the embodiment of the present application is provided
Figure；
Fig. 4 judges the stream of wiring correctness for a kind of measurement loop wiring error determination methods that the embodiment of the present application is provided
Cheng Tu；
Fig. 5 is the schematic diagram for judging signal for the feedback signal that the embodiment of the present application is provided；
Fig. 6 is not the schematic diagram for judging signal for the feedback signal that the embodiment of the present application is provided；
Fig. 7 is test signal that the embodiment of the present application the is provided schematic diagram consistent with judging signal polarity；
Test signal and judge the inconsistent schematic diagram of signal polarity that Fig. 8 provides for the embodiment of the present application；
A kind of structural representation for measurement loop wiring error judgment means that Fig. 9 provides for the embodiment of the present application；
The structural representation for another measurement loop wiring error judgment means that Figure 10 provides for the embodiment of the present application.
Illustrate：
Wherein：1- transmitter units, 2- first acquisition units, 3- receiving units, 4- second acquisition units, 5- screening units,
The acquiring units of 6- the 3rd, the judging units of 7- first, 8- output units, 9- amplifying units, the judging units of 10- second, 11- the 3rd sentences
Disconnected unit.
Embodiment
Referring to Fig. 1, a kind of flow chart of measurement loop wiring error determination methods.
The present embodiment provides a kind of measurement loop wiring error determination methods, and this method includes：
S100, by during cycle emitting voltage/current test signal；
The primary side of three-phase voltage/current transformer is high-pressure side, and secondary side is low-pressure side, and voltage/current signals source connects
The secondary side outlet terminal of each phase of threephase current transformer is connected to, emitting voltage/current signal, the voltage signal magnitude is less than
10V, the current signal amplitude is less than 0.5A, so as to avoid to secondary device such as：Voltmeter, ammeter, power meter, relay are protected
Shield equipment etc. causes any damage.
Voltage/current test signal uses sine wave, and sine wave is a kind of unique waveform of single-frequency composition, and i.e.
Make to produce the magnetic field being continually changing and electric field in voltage/current test signal transmitting procedure, the magnetic field and electric field are remained
Change by sinusoidal rule, such test signal is more stable, the accuracy of testing result can be effectively ensured.
S200, obtains the cycle quantity of the test signal and the corresponding cycle start-phase of the test signal；
S300, receives feedback signal；
S400, obtains the cycle quantity of the feedback signal；
S500, according to the cycle quantity of the test signal and the cycle quantity of the feedback signal, filter out with it is described
Test signal is in the judgement signal of phase isopen；
S600, obtains the corresponding cycle start-phase for judging signal；
S700, according to the corresponding cycle start-phase of the test signal and the corresponding cycle start-up phase of the judgement signal
Position, judges wiring correctness；
S800, exports testing result.
From above technical scheme, the application provides a kind of measurement loop wiring error determination methods, by during cycle
Emitting voltage/current test signal；Obtain the corresponding cycle starting of the cycle quantity and the test signal of the test signal
Phase；Receive feedback signal；Obtain the cycle quantity of the feedback signal；According to the cycle quantity of the test signal and described
The cycle quantity of feedback signal, filters out the judgement signal that phase isopen is in the test signal；Obtain the judgement letter
Number corresponding cycle start-phase；According to the corresponding cycle start-phase of the test signal and the correspondence week of the judgement signal
Ripple start-phase, judges wiring correctness；Export testing result.The method and device that the embodiment of the present application is provided can be need not
Disconnect between secondary circuit and voltage/current transformer in the case of wire, wiring is carried out by the transmission of voltage/current signals
Correction judgement, saves and manually disconnects wire step, so as to improve detection efficiency.
Referring to Fig. 2, a kind of flow chart of measurement loop wiring error determination methods amplified signal.
Alternatively, it is described by during cycle emitting voltage/current test signal, in addition to：
S101, amplifies the test signal.
Voltage/current signals source is by single-chip microcomputer control, and single-chip microcomputer input is logic level, i.e., high level voltage is general
In more than 2.4V, low level voltage is typically in below 0.7V, in order that more test signal amplitudes meet logic level
The need for, small-signal therein must be just amplified, increase meets the available signal quantity of logic level, so as to improve inspection
Survey efficiency.
Alternatively, the corresponding cycle start-up phase of the cycle quantity and the test signal for obtaining the test signal
Position；
The cycle quantity of the test signal includes：1st, 2 or 3, three kinds of situations；
The corresponding cycle start-phase of the test signal is 0 degree.
The test signal is divided into by three-phase according to the cycle quantity：1 cycle is A phase signals, and 2 cycles are B phases
Signal, 3 cycles are C phase signals.The cycle number of phase line is set to complete cycle ripple where the test being distinguished, and can effectively subtract
Exempt from the time wasted when non-complete cycle ripple value is counted；The cycle start-phase is set to 0 degree, start-phase can be prevented effectively from
Not by 0 degree, it is necessary to the time that cycle start-phase is spent be calculated, so as to improve detection efficiency.
Referring to Fig. 3, electric power meter Wiring detection method screens the flow chart for judging signal.
Alternatively, the cycle quantity and the cycle quantity of the feedback signal according to the test signal, is filtered out
The judgement signal of phase isopen is in the test signal, in addition to：
S501, judge the test signal cycle quantity and the feedback signal cycle quantity it is whether equal；
S502, if equal, the feedback signal is the judgement signal.
For example：It is A phase signals, if the feedback letter as shown in figure 5, setting when the test signal is 1 cycle
Number also it is 1 cycle, wherein the ripple of the feedback signal can be the various deformation of the test signal cycle, then the feedback
Signal can be used for following wiring correctness detection process to judge signal.If as shown in fig. 6, the feedback signal is not
One cycle, such as 2 or half, then the feedback signal is not to judge signal, it should is excluded, is not useable for following connect
Line correctness detection process.It will be unable to the signal for continuing to judge to exclude, reduction subsequently needs to compare the cycle of initial phase
Quantity, so as to improve detection efficiency.
Referring to Fig. 4, a kind of measurement loop wiring error determination methods judge the flow chart of wiring correctness.
Alternatively, the corresponding cycle start-phase and the corresponding cycle of the judgement signal according to the test signal
Start-phase, judges wiring correctness, in addition to：
S701, judges the corresponding cycle start-phase of the test signal and the corresponding cycle start-up phase of the judgement signal
Whether position is consistent；
S702, if unanimously, the test signal is consistent with the polarity of the judgement signal, and wiring is correct；
S703, if it is inconsistent, the test signal is different from the polarity of the judgement signal, wiring error.
For example：As shown in fig. 7, the start-phase for setting the test signal is 0, if the start-up phase for judging signal
Position is also 0, then both polarity are consistent, and wiring is correct.If as shown in figure 8, the start-phase for judging signal is π, two
Person's polarity is inconsistent, wiring error.By waveform comparison, wiring correctness can be fast and accurately judged.
Referring to Fig. 9, a kind of structural representation of measurement loop wiring error judgment means.
The present embodiment provides a kind of measurement loop wiring error judgment means, and the device includes：
Transmitter unit 1, for by during cycle emitting voltage/current test signal；
First acquisition unit 2, for obtaining the cycle quantity of the test signal and the corresponding cycle of the test signal
Start-phase；
Receiving unit 3, for receiving feedback signal；
Second acquisition unit 4, the cycle quantity for obtaining the feedback signal；
Screening unit 5, for the cycle quantity and the cycle quantity of the feedback signal according to the test signal, screening
Go out to be in the judgement signal of phase isopen with the test signal；
3rd acquiring unit 6, the corresponding cycle start-phase for obtaining the judgement signal；
First judging unit 7, for the corresponding cycle start-phase according to the test signal and the judgement signal
Correspondence cycle start-phase, judges wiring correctness；
Output unit 8, for exporting testing result.
Referring to Figure 10, the structural representation of another measurement loop wiring error judgment means.
Alternatively, the transmitter unit 1, in addition to：
Amplifying unit 9, for amplifying the test signal.
Alternatively, the first acquisition unit 2, for the cycle quantity for obtaining the test signal and the test
The corresponding cycle start-phase of signal；
The cycle quantity of the test signal includes：1st, 2 or 3, three kinds of situations；
The corresponding cycle start-phase of the test signal is 0 degree.
Alternatively, the screening unit 5, for the cycle quantity according to the test signal and the week of the feedback signal
Wave number amount, filters out the judgement signal that phase isopen is in the test signal, in addition to：
Second judging unit 10, for judging the cycle quantity of the test signal and the cycle quantity of the feedback signal
It is whether equal；
If equal, the feedback signal is the judgement signal.
Alternatively, first judging unit 7, for the corresponding cycle start-phase according to the test signal and described
Judge the corresponding cycle start-phase of signal, judge wiring correctness, in addition to：
3rd judging unit 11, corresponding cycle start-phase and the judgement signal for judging the test signal
Whether correspondence cycle start-phase is consistent；
If consistent, the test signal is consistent with the polarity of the judgement signal, and wiring is correct；
If it is inconsistent, the test signal is different from the polarity of the judgement signal, wiring error.
From above technical scheme, this application provides a kind of measurement loop wiring error judgment means, including：Transmitting
Unit 1, for by during cycle emitting voltage/current test signal；First acquisition unit 2, for obtaining the test signal
Cycle quantity and the test signal corresponding cycle start-phase；Receiving unit 3, for receiving feedback signal；Second obtains
Unit 4 is taken, the cycle quantity for obtaining the feedback signal；Screening unit 5, for the cycle according to the test signal
The cycle quantity of amount and the feedback signal, filters out the judgement signal that phase isopen is in the test signal；3rd obtains
Unit 6 is taken, the corresponding cycle start-phase for obtaining the judgement signal；First judging unit 7, for according to the test
The corresponding cycle start-phase of signal and the corresponding cycle start-phase of the judgement signal, judge wiring correctness；Output is single
Member 8, for exporting testing result.
It was found from above-described embodiment, the test signal launched by the transmitter unit 1 is received by the receiving unit 3, and
By multilevel iudge signal and the cycle quantity and cycle start-phase of the test signal, the wiring of electric power meter is judged
Correctness.The device need not disconnect the wire between secondary circuit and voltage/current transformer, and testing efficiency is high.
It should be appreciated that exact method and knot that the application is not limited to be described above and is shown in the drawings
Structure, and various modifications and changes can be being carried out without departing from the scope.Scope of the present application only by appended claim Lai
Limitation.
Claims (10)
1. a kind of measurement loop wiring error determination methods, it is characterised in that methods described includes：
By during cycle emitting voltage/current test signal；
Obtain the cycle quantity of the test signal and the corresponding cycle start-phase of the test signal；
Receive feedback signal；
Obtain the cycle quantity of the feedback signal；
According to the cycle quantity of the test signal and the cycle quantity of the feedback signal, filter out with the test signal
In the judgement signal of phase isopen；
Obtain the corresponding cycle start-phase for judging signal；
According to the corresponding cycle start-phase of the test signal and the corresponding cycle start-phase of the judgement signal, judge to connect
Line correctness；
Export testing result.
2. a kind of measurement loop wiring error determination methods according to claim 1, it is characterised in that described to press preset week
Phase emitting voltage/current test signal, in addition to：
Amplify the test signal.
3. a kind of measurement loop wiring error determination methods according to claim 1, it is characterised in that described in the acquisition
The cycle quantity of test signal and the corresponding cycle start-phase of the test signal；
The cycle quantity of the test signal includes：1st, 2 or 3, three kinds of situations；
The corresponding cycle start-phase of the test signal is 0 degree.
4. a kind of measurement loop wiring error determination methods according to claim 1, it is characterised in that described in the basis
The cycle quantity of test signal and the cycle quantity of the feedback signal, filter out and are in phase isopen with the test signal
Judge signal, in addition to：
Judge the test signal cycle quantity and the feedback signal cycle quantity it is whether equal；
If equal, the feedback signal is the judgement signal.
5. a kind of measurement loop wiring error determination methods according to claim 1, it is characterised in that described in the basis
The corresponding cycle start-phase of test signal and the corresponding cycle start-phase of the judgement signal, judge wiring correctness, also
Including：
Judge the test signal corresponding cycle start-phase and the corresponding cycle start-phase for judging signal whether one
Cause；
If consistent, the test signal is consistent with the polarity of the judgement signal, and wiring is correct；
If it is inconsistent, the test signal is different from the polarity of the judgement signal, wiring error.
6. a kind of measurement loop wiring error judgment means, it is characterised in that described device includes：
Transmitter unit, for by during cycle emitting voltage/current test signal；
First acquisition unit, for obtaining the cycle quantity of the test signal and the corresponding cycle start-up phase of the test signal
Position；
Receiving unit, for receiving feedback signal；
Second acquisition unit, the cycle quantity for obtaining the feedback signal；
Screening unit, for the cycle quantity and the cycle quantity of the feedback signal according to the test signal, filter out with
The test signal is in the judgement signal of phase isopen；
3rd acquiring unit, the corresponding cycle start-phase for obtaining the judgement signal；
First judging unit, for the corresponding cycle start-phase according to the test signal and the correspondence week of the judgement signal
Ripple start-phase, judges wiring correctness；
Output unit, for exporting testing result.
7. a kind of measurement loop wiring error judgment means according to claim 6, it is characterised in that the transmitting list
Member, in addition to：
Amplifying unit, for amplifying the test signal.
8. a kind of measurement loop wiring error judgment means according to claim 6, it is characterised in that described first obtains
Unit, the corresponding cycle start-phase for the cycle quantity and the test signal for obtaining the test signal；
The cycle quantity of the test signal includes：1st, 2 or 3, three kinds of situations；
The corresponding cycle start-phase of the test signal is 0 degree.
9. a kind of measurement loop wiring error judgment means according to claim 6, it is characterised in that the screening list
Member, for the cycle quantity and the cycle quantity of the feedback signal according to the test signal, filters out and believes with the test
Number be in phase isopen judgement signal, in addition to：
Second judging unit, for judge the test signal cycle quantity and the feedback signal cycle quantity whether phase
Deng；
If equal, the feedback signal is the judgement signal.
10. a kind of measurement loop wiring error determination methods according to claim 6, it is characterised in that described first sentences
Disconnected unit, for the corresponding cycle start-phase and the corresponding cycle start-up phase of the judgement signal according to the test signal
Position, judges wiring correctness, in addition to：
3rd judging unit, for judging the corresponding cycle start-phase of the test signal and the correspondence week of the judgement signal
Whether ripple start-phase is consistent；
If consistent, the test signal is consistent with the polarity of the judgement signal, and wiring is correct；
If it is inconsistent, the test signal is different from the polarity of the judgement signal, wiring error.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710462582.9A CN107102289B (en) | 2017-06-19 | 2017-06-19 | A kind of measurement loop wiring error judgment method and device |
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|---|---|---|---|
| CN201710462582.9A CN107102289B (en) | 2017-06-19 | 2017-06-19 | A kind of measurement loop wiring error judgment method and device |
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| CN107102289B CN107102289B (en) | 2019-10-22 |
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| CN108710054A (en) * | 2018-05-25 | 2018-10-26 | 云南电网有限责任公司曲靖供电局 | Wiring state detection device, method and the secondary circuit system of secondary circuit |
| CN109782212A (en) * | 2018-12-29 | 2019-05-21 | 国网山东省电力公司聊城供电公司 | Bilateral separate type metering secondary wiring check device and its core line method |
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Also Published As
| Publication number | Publication date |
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| CN107102289B (en) | 2019-10-22 |
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