CN206876762U - A kind of intelligent electric energy meter for automatic identification false wiring - Google Patents
A kind of intelligent electric energy meter for automatic identification false wiring Download PDFInfo
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- CN206876762U CN206876762U CN201720543419.0U CN201720543419U CN206876762U CN 206876762 U CN206876762 U CN 206876762U CN 201720543419 U CN201720543419 U CN 201720543419U CN 206876762 U CN206876762 U CN 206876762U
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Abstract
The utility model provides a kind of intelligent electric energy meter for automatic identification false wiring, including three-phase voltage collecting unit, three-phase current collecting unit, three-phase electricity metering units and MCU Main Processing Unit, the three-phase electricity metering units include three-phase electric parameter metering units and three-phase phase difference metering units, the three-phase electric parameter metering units connect the three-phase voltage collecting unit and the three-phase current collecting unit respectively, for measuring three-phase electric parameter；The three-phase phase difference metering units connect the three-phase voltage collecting unit and the three-phase current collecting unit respectively, for measuring three-phase voltage phase difference, three-phase current phase difference and three-phase voltage and three-phase current phase difference；The MCU Main Processing Unit, judge whether the wiring of the intelligent electric energy meter is correct with three-phase current phase difference according to the three-phase electric parameter, the three-phase voltage phase difference, the three-phase current phase difference and the three-phase voltage.
Description
Technical field
Electric energy table look-up field is the utility model is related to, specifically, one kind is relate to and is used for automatic identification false wiring
Intelligent electric energy meter.
Background technology
Either three-phase three-phase electric energy meter or three-phase and four-line electric energy meter, the dosage in life and production are all very big
, and easily there is false wiring, cause actual electricity consumption and metering electricity consumption inconsistent；And during mistake wiring stealing,
When being checked if any inspection personnel, line adjustment is normal, people, which walks, to be changed, and causes can not solve real stealing and line loss problem；
Traditional wiring check method simultaneously, using phase voltammetric meter or phase-sequence meter, to check whether the wiring of electric energy meter is correct, so
Need operating personnel that there is at a relatively high knowwhy and field experience, could correctly judge the wiring condition of electric energy meter.
Existing three-phase electric energy meter on-site calibrator and wiring check instrument, although wiring inspection quickly can be done to electric energy meter
Look into work, it might even be possible to realize and remedy electricity, but when, wiring check is also this wiring check；If there is change again also
Site inspection is arrived again.
Some time point remedied also simply of its other electricity remedies coefficient, and the electricity of remedying calculated is also
One general data, it is impossible to really remedy charge value for one at last.
In order to solve the problem present on, people are seeking a kind of preferable technical solution always.
The content of the invention
The purpose of this utility model is in view of the shortcomings of the prior art, so as to provide a kind of design science, practical
Intelligent electric energy meter for automatic identification false wiring.
To achieve these goals, technical scheme is used by the utility model：One kind connects for automatic identification mistake
The intelligent electric energy meter of line, including three-phase voltage collecting unit, three-phase current collecting unit, three-phase electricity metering units and MCU master controls
Unit,
The three-phase electricity metering units include three-phase electric parameter metering units and three-phase phase difference metering units, the three-phase
Electric parameter metering units connect the three-phase voltage collecting unit and the three-phase current collecting unit respectively, for measuring three-phase
Electric parameter；
The three-phase phase difference metering units connect the three-phase voltage collecting unit and three-phase current collection respectively
Unit, for measuring three-phase voltage phase difference, three-phase current phase difference and three-phase voltage and three-phase current phase difference；
The MCU Main Processing Unit, according to the three-phase electric parameter, the three-phase voltage phase difference, the three-phase current phase
Potential difference and the three-phase voltage judge whether the wiring of the intelligent electric energy meter is correct with three-phase current phase difference, and record
Time and false wiring state are changed in wiring.
Based on above-mentioned, the three-phase electric parameter, which includes three-phase phase voltage virtual value, triple line current effective value and three-phase, to be had
Work(power.
Based on above-mentioned, the three-phase phase difference measurement unit includes waveform changing circuit, photoelectric isolated chip and microcontroller
Device, the waveform changing circuit connect the three-phase voltage collecting unit and the three-phase current collecting unit respectively, for inciting somebody to action
Three-phase voltage signal and three-phase current signal are converted to square-wave signal；The microcontroller is connected by the photoelectric isolated chip
The waveform changing circuit, according to the square-wave signal calculate the three-phase voltage phase difference, the three-phase current phase difference with
And the three-phase voltage and three-phase current phase difference.
Based on above-mentioned, the three-phase phase difference metering units are three-phase electrical energy computation chip.
Based on above-mentioned, in addition to electric quantity compensating module, the electric quantity compensating module and the MCU Main Processing Unit, according to institute
The wiring change time and false wiring state computation for stating MCU Main Processing Unit record remedy electricity.
Based on above-mentioned, in addition to communication module, the MCU Main Processing Unit pass through the communication module and extraneous power center
Connection, for the wiring change time for recording the MCU Main Processing Unit and false wiring feedback of status in extraneous electric power
The heart.
The utility model has substantive distinguishing features and progress compared with the prior art, and specifically, the utility model is described
Three-phase voltage phase difference, three-phase current phase difference and three-phase voltage and three-phase current phase difference are added in intelligent electric energy meter
Measure function, by specific phase angle judge intelligent electric energy meter wiring whether mistake, if mistake, intelligent electric energy meter is immediately
Record, and electric quantity compensating is proceeded by, so as to reduce stealing loss；The utility model have design science, it is practical with
And method it is simple the advantages of.
Brief description of the drawings
Fig. 1 is theory diagram of the present utility model.
Fig. 2 is the phase difference figure of each phase voltage or each phase current in embodiment 1.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
Embodiment 1
As shown in figure 1, a kind of intelligent electric energy meter for automatic identification false wiring, including three-phase voltage collecting unit,
Three-phase current collecting unit, three-phase electricity metering units and MCU Main Processing Unit,
The three-phase electricity metering units include three-phase electric parameter metering units and three-phase phase difference metering units, the three-phase
Electric parameter metering units connect the three-phase voltage collecting unit and the three-phase current collecting unit respectively, for measuring three-phase
Electric parameter；
The three-phase phase difference metering units connect the three-phase voltage collecting unit and three-phase current collection respectively
Unit, for measuring three-phase voltage phase difference, three-phase current phase difference and three-phase voltage and three-phase current phase difference；
The MCU Main Processing Unit, according to the three-phase electric parameter, the three-phase voltage phase difference, the three-phase current phase
Potential difference and the three-phase voltage judge whether the wiring of the intelligent electric energy meter is correct with three-phase current phase difference, and record
Time and false wiring state are changed in wiring.
Preferably, the three-phase electric parameter metering units are three-phase electrical energy computation chip, such as AT70XX series；The three-phase
Electric parameter includes three-phase phase voltage virtual value, triple line current effective value and three phases active power.
In practical application, by the three-phase voltage collecting unit and the three-phase current collecting unit respectively according to the institute of table 1
The method shown correspondingly connects the pin of the AT70XX family chips, and the AT70XX family chips measure three-phase phase voltage respectively
Virtual value, triple line current effective value and three phases active power.
Table 1
Preferably, the three-phase phase difference measurement unit includes waveform changing circuit, photoelectric isolated chip and microcontroller,
The waveform changing circuit connects the three-phase voltage collecting unit and the three-phase current collecting unit respectively, for by three-phase
Voltage signal and three-phase current signal are converted to square-wave signal；The microcontroller passes through described in photoelectric isolated chip connection
Waveform changing circuit, three-phase voltage phase difference, the three-phase current phase difference and the institute are calculated according to the square-wave signal
State three-phase voltage and three-phase current phase difference.
In use, the three-phase voltage of three-phase voltage collecting unit output and the three-phase current collecting unit are exported
Three-phase current be respectively connected to the waveform changing circuit, through the waveform changing circuit and the photoelectric isolated chip conversion after
It is changed into square-wave signal, and is sent into the microcontroller and carries out tick interrupt, as shown in Figure 2；The microcontroller counts each respectively
The break period of phase voltage or each phase current, and according to θ=Ti,j* f*360 °, i, j=a, b, c formula, calculating judges described three
Phase voltage phase difference, the three-phase current phase difference and the three-phase voltage and three-phase current phase difference.
It should be noted that：Corresponding correct wiring is different during different separate conduct reference phases in three-phase electricity,
This causes the phase angle of the three-phase electricity corresponding to correct wiring and phase difference also to differ；Therefore before wiring check, it is necessary to
First confirm the reference phase of intelligent electric energy meter before being easy to act as.
Simultaneously as under different power factor states, the correct mode of connection has a variety of, therefore the folder of voltage and electric current
Angular region also differs；Specifically, under different power factor states, power factor is divided into 0~0.5C；0.5C~1.0；
0~0.5L；0.5L~1.0 4 area, the phase range of voltage and electric current corresponding to each area are as shown in table 2；
| Power factor state | 0~0.5C | 0.5C~1.0 | 1.0~0.5L | 0~0.5L |
| U-I angles | - 90 °~-60 ° | - 60 °~0 ° | 0 °~60 ° | 60 °~-90 ° |
Table 2
Therefore, before wiring check, it is necessary to first pass through rating formula：Intelligence electricity before confirmation is easy to act as
The power factor state of energy table.
Preferably, the intelligent electric energy meter also includes electric quantity compensating module, the electric quantity compensating module and the MCU master controls
Unit, the time is changed in the wiring recorded according to the MCU Main Processing Unit and false wiring state computation remedies electricity.
When the MCU Main Processing Unit judges wiring error, the electric quantity compensating module immediate record false wiring shape
Formula, and start calculating and remedy electricity, when false wiring form changes again, electric quantity compensating module misregistration again
Connection type simultaneously remedies cumulative electricity, the like, when being paid to the electricity charge, you can calculate true power consumption, reduce stealing and show
The possibility of elephant.
The intelligent electric energy meter also includes communication module, and the MCU Main Processing Unit passes through the communication module and external world's electricity
Power center connects, for the wiring change time for recording the MCU Main Processing Unit and false wiring feedback of status to the external world
Power center, it is easy to maintenance personal to carry out examination and maintenance to intelligent electric energy meter in time.
Embodiment 2
The present embodiment in place of the difference of embodiment 1 with being：The three-phase phase difference metering units are three-phase electric energy metering
Chip.
Preferably, the three-phase phase difference metering units include three AT70XX family chips.
The three-phase voltage collecting unit and the three-phase current collecting unit is corresponding according to the method shown in table 3 respectively
Three AT70XX family chip pins of the three-phase phase difference metering units are accessed, three AT70XX family chips measure respectively
The phase difference and the phase difference of every phase voltage and electric current between phase difference, any biphase current between any two-phase voltage.
Table 3
Finally it should be noted that:Above example is only illustrating the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to preferred embodiment, those of ordinary skill in the art should
Understand：Specific embodiment of the present utility model can still be modified or some technical characteristics are equally replaced
Change；Without departing from the spirit of technical solutions of the utility model, it all should cover in the claimed technical scheme of the utility model
Among scope.
Claims (6)
- A kind of 1. intelligent electric energy meter for automatic identification false wiring, it is characterised in that：Including three-phase voltage collecting unit, three Phase current collecting unit, three-phase electricity metering units and MCU Main Processing Unit,The three-phase electricity metering units include three-phase electric parameter metering units and three-phase phase difference metering units, the three-phase electricity ginseng Amount metering units connect the three-phase voltage collecting unit and the three-phase current collecting unit respectively, for measuring three-phase electricity ginseng Amount；The three-phase phase difference metering units connect the three-phase voltage collecting unit and the three-phase current collecting unit respectively, For measuring three-phase voltage phase difference, three-phase current phase difference and three-phase voltage and three-phase current phase difference；The MCU Main Processing Unit, according to the three-phase electric parameter, the three-phase voltage phase difference, the three-phase current phase difference And the three-phase voltage judges whether the wiring of the intelligent electric energy meter is correct with three-phase current phase difference, and record wiring Change time and false wiring state.
- 2. the intelligent electric energy meter according to claim 1 for automatic identification false wiring, it is characterised in that：The three-phase Electric parameter includes three-phase phase voltage virtual value, triple line current effective value and three phases active power.
- 3. the intelligent electric energy meter according to claim 2 for automatic identification false wiring, it is characterised in that：The three-phase Phase difference measurement unit includes waveform changing circuit, photoelectric isolated chip and microcontroller, and the waveform changing circuit connects respectively The three-phase voltage collecting unit and the three-phase current collecting unit are connect, for by three-phase voltage signal and three-phase current signal Be converted to square-wave signal；The microcontroller connects the waveform changing circuit by the photoelectric isolated chip, according to described Square-wave signal calculates three-phase voltage phase difference, the three-phase current phase difference and the three-phase voltage and three-phase current phase Potential difference.
- 4. the intelligent electric energy meter according to claim 2 for automatic identification false wiring, it is characterised in that：The three-phase Phase difference metering units are three-phase electrical energy computation chip.
- 5. the intelligent electric energy meter for automatic identification false wiring according to claim any one of 1-4, it is characterised in that： Also include electric quantity compensating module, the electric quantity compensating module and the MCU Main Processing Unit, recorded according to the MCU Main Processing Unit Wiring change the time and false wiring state computation remedy electricity.
- 6. the intelligent electric energy meter according to claim 5 for automatic identification false wiring, it is characterised in that：Also include logical Believe module, the MCU Main Processing Unit is connected by the communication module with extraneous power center, for by the MCU master controls list The wiring change time and false wiring feedback of status that member is recorded give extraneous power center.
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| CN201720543419.0U CN206876762U (en) | 2017-05-17 | 2017-05-17 | A kind of intelligent electric energy meter for automatic identification false wiring |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107656163A (en) * | 2017-08-31 | 2018-02-02 | 陈劲游 | The wiring of phase three-wire three metering device and the investigating method for being grounded automatic detection instrument |
| CN109164345A (en) * | 2018-09-27 | 2019-01-08 | 深圳友讯达科技股份有限公司 | Live line Zero line Wiring detection method, device and intelligent electric meter |
| CN112230177A (en) * | 2019-12-20 | 2021-01-15 | 青岛鼎信通讯股份有限公司 | Three-phase self-recognition calibration method applied to electric meter |
| CN112269055A (en) * | 2020-11-25 | 2021-01-26 | 程昱舒 | Intelligent junction box for electric energy metering |
| CN112596018A (en) * | 2020-12-09 | 2021-04-02 | 南方电网电力科技股份有限公司 | High-frequency signal-based power consumer relative position identification device, method and equipment |
| CN115963433A (en) * | 2023-03-13 | 2023-04-14 | 深圳市科陆精密仪器有限公司 | Electric energy meter wiring checking method, device, equipment and storage medium |
-
2017
- 2017-05-17 CN CN201720543419.0U patent/CN206876762U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107656163A (en) * | 2017-08-31 | 2018-02-02 | 陈劲游 | The wiring of phase three-wire three metering device and the investigating method for being grounded automatic detection instrument |
| CN107656163B (en) * | 2017-08-31 | 2020-04-21 | 陈劲游 | Measurement and control method for automatic wiring and grounding detection instrument of three-phase three-wire metering device |
| CN109164345A (en) * | 2018-09-27 | 2019-01-08 | 深圳友讯达科技股份有限公司 | Live line Zero line Wiring detection method, device and intelligent electric meter |
| CN112230177A (en) * | 2019-12-20 | 2021-01-15 | 青岛鼎信通讯股份有限公司 | Three-phase self-recognition calibration method applied to electric meter |
| CN112269055A (en) * | 2020-11-25 | 2021-01-26 | 程昱舒 | Intelligent junction box for electric energy metering |
| CN112269055B (en) * | 2020-11-25 | 2024-03-19 | 程昱舒 | Intelligent junction box for electric energy metering |
| CN112596018A (en) * | 2020-12-09 | 2021-04-02 | 南方电网电力科技股份有限公司 | High-frequency signal-based power consumer relative position identification device, method and equipment |
| CN112596018B (en) * | 2020-12-09 | 2021-09-17 | 南方电网电力科技股份有限公司 | High-frequency signal-based power consumer relative position identification device, method and equipment |
| CN115963433A (en) * | 2023-03-13 | 2023-04-14 | 深圳市科陆精密仪器有限公司 | Electric energy meter wiring checking method, device, equipment and storage medium |
| CN115963433B (en) * | 2023-03-13 | 2023-08-08 | 深圳市科陆精密仪器有限公司 | Electric energy meter wiring inspection method, device, equipment and storage medium |
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