CN207782805U - Taiwan area phase identification system based on low-voltage powerline carrier communication - Google Patents
Taiwan area phase identification system based on low-voltage powerline carrier communication Download PDFInfo
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- CN207782805U CN207782805U CN201721672038.9U CN201721672038U CN207782805U CN 207782805 U CN207782805 U CN 207782805U CN 201721672038 U CN201721672038 U CN 201721672038U CN 207782805 U CN207782805 U CN 207782805U
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Abstract
The utility model discloses the taiwan area phase identification systems based on low-voltage powerline carrier communication, it is related to phase identification field, including Three Phase Carrier Based module, single-phase carrier module, electric energy meter and concentrator, Three Phase Carrier Based module is mounted in concentrator, single-phase carrier module is arranged inside electric energy meter, concentrator is connected to three-phase alternating current alternating current, electric energy meter is connected to the A phase lines of three-phase alternating current alternating current, three-phase alternating current alternating current is also associated with transformer, Three Phase Carrier Based module and single-phase carrier module include zero passage detection unit, power line carrier communication unit and micro controller unit, zero passage detection unit, power line carrier communication unit is all connected with micro controller unit.The utility model advantageous effect：The utility model is without increasing hardware cost, the case where crosstalk and high-frequency signal Coupling Between Phases between taiwan area lead to the erroneous judgement of affiliated taiwan area and access phase can be effectively solved, the distance and anti-interference ability that carrier signal is transmitted on power line can be improved using the modulation and demodulation method of OFDM technology.
Description
Technical field
The utility model is related to phase identification technical fields, are based especially on the taiwan area phase of low-voltage powerline carrier communication
Identifying system.
Background technology
Due to current taiwan area identifying schemes, all it is task of artificial participation being needed to complete taiwan area identification and divide, belongs to
In non intelligent or Semi-intelligent Modular identification method.These modes, intelligent for height, the intelligent grid construction of automation need
Ask also much insufficient.
In low-voltage power carrier meter reading system, it is to be understood that the archive information (electric supply meter that i.e. taiwan area includes of taiwan area
And access phase information), smoothly to realize the networking and meter reading of taiwan area.Current taiwan area archive information is in main website typing
Information is handed down to the concentrator of corresponding taiwan area by main website.Synchronizing for taiwan area archive information is passive and synchronous side from top to bottom
Formula.This mode, due to needing artificial typing information, the unavoidable situation that will appear archive information typing mistake to occur,
And inefficiency.Therefore, full-automatic taiwan area identifying system is built, it being capable of the affiliated taiwan area of automatic identification user and access phase
The information of position is necessary.
Currently, the affiliated taiwan area knowledge method for distinguishing of user includes mainly：Using frequency shift keying (Frequency Shift
Keying, FSK) power carrier signal method, whether it is to send FSK low frequency carrier signals by transmitting terminal, can be received according to receiving terminal
To the carrier signal, to determine whether belonging to the taiwan area.This method will appear erroneous judgement in the case of taiwan area crosstalk.Using pulse
The taiwan area recognition methods of current technique is by sending a pulsed current signal in user terminal, if in the reception of a certain taiwan area
End can detect the pulsed current signal, then judge that the user belongs to this taiwan area.Since pulse current cannot be passed by transformer
The characteristics of defeated and long transmission distance, therefore this method can solve the problems, such as between taiwan area and alternate crosstalk, but need increase volume
Outer hardware cost and it should not implement.Taiwan area identification, this method and electric power are realized as carrier wave using power frequency component in addition, also having
Carrier signal method is similar, since to have the characteristics that lower coupling and across transformer signal decay big for power frequency component, passes through and threshold value is arranged
Signal detecting method, can solve the problems, such as taiwan area crosstalk and lead to erroneous judgement, but this method also need to increase hardware at
This.
Utility model content
The utility model aim is to overcome deficiency in the prior art, is provided based on low-voltage powerline carrier communication
Taiwan area phase identification system.
In order to solve the above-mentioned technical problem, the utility model is achieved through the following technical solutions：
Taiwan area phase identification system based on low-voltage powerline carrier communication, including Three Phase Carrier Based module, single-phase carrier mould
Block, electric energy meter and concentrator, the Three Phase Carrier Based module are mounted in concentrator, and the single-phase carrier module is arranged in electric energy meter
Inside, the concentrator are connected to three-phase alternating current alternating current, and the electric energy meter is connected to the A phase lines of three-phase alternating current alternating current, and described three
Phase electric main is also associated with transformer, and the Three Phase Carrier Based module and single-phase carrier module include zero passage detection unit, electricity
Powerline carrier communication unit and micro controller unit, the zero passage detection unit, power line carrier communication unit are all connected with micro-control
Device unit processed.
Preferably, the zero passage detection unit is made of AC zero passage detection circuit.
Preferably,：The power line carrier communication unit includes carrier signal sending module and carrier signal receiving module,
The carrier signal sending module is made of transmission low noise amplifier circuit.
Preferably, the carrier signal sending module by reception low noise amplifier circuit and receives hardware filter
It constitutes.
Preferably, the zero passage detection unit leads to the zero passage detection that zero cross detection circuit realizes low-voltage AC.
Preferably, the power line carrier communication unit realizes that data transmission, the electric power carry by power carrier channel
Wave channel is power line.
Preferably, the AC zero passage detection circuit includes resistance, the first diode, the second diode and amplifier,
Between first diode and the in-phase input end and inverting input of the equal cascade amplifier of the second diode.
Preferably, the in-phase input end of the amplifier is also connected to phase line by resistance, first diode with
It is in parallel between second diode.
The utility model advantageous effect：The utility model can effectively solve the crosstalk between taiwan area without increasing hardware cost
And high-frequency signal Coupling Between Phases lead to the case where erroneous judgement of affiliated taiwan area and access phase, using the modulation /demodulation side of OFDM technology
The distance and anti-interference ability that carrier signal is transmitted on power line can be improved in case, to reduce since noise jamming leads to carrier wave
The probability of signal transmission failure, it is simple in structure, securely and reliably, while there is very strong practicability.
The technique effect of the design of the utility model, concrete structure and generation is made furtherly below with reference to attached drawing
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the zero passage synchronous transfer process schematic of the utility model；
Fig. 3 is the AC zero passage detection circuit of the utility model embodiment.
Specific implementation mode
The embodiments of the present invention are described in detail below in conjunction with attached drawing, but the utility model can be by right
It is required that the multitude of different ways for limiting and covering is implemented.
Such as Fig. 1 is simultaneously combined shown in Fig. 2 and Fig. 3, and the taiwan area phase identification system based on low-voltage powerline carrier communication is special
Sign is：Including Three Phase Carrier Based module, single-phase carrier module, electric energy meter and concentrator, the Three Phase Carrier Based module is mounted on collection
In middle device, the single-phase carrier module is arranged inside electric energy meter, and the concentrator is connected to three-phase alternating current alternating current, the electric energy
Table is connected to the A phase lines of three-phase alternating current alternating current, and the three-phase alternating current alternating current is also associated with transformer, the Three Phase Carrier Based module and
Single-phase carrier module includes zero passage detection unit, power line carrier communication unit and micro controller unit, the zero passage detection
Unit, power line carrier communication unit are all connected with micro controller unit.
Further, the zero passage detection unit is made of AC zero passage detection circuit, the power line carrier communication
Unit includes carrier signal sending module and carrier signal receiving module, and the carrier signal sending module is by transmission low noise work(
Rate amplifier circuit is constituted.
Further, the carrier signal sending module by reception low noise amplifier circuit and receives hardware filtering
Device is constituted, and the zero passage detection unit leads to the zero passage detection that zero cross detection circuit realizes low-voltage AC.
Further, the power line carrier communication unit realizes data transmission, the electric power by power carrier channel
Carrier channel is power line, and the AC zero passage detection circuit includes resistance, the first diode, the second diode and amplification
Device, it is described to put between first diode and the in-phase input end and inverting input of the equal cascade amplifier of the second diode
The in-phase input end of big device is also connected to phase line by resistance, in parallel between first diode and the second diode.
Operation principle：Using the characteristic of 120 degree of differences of low-voltage power line three-phase alternating current 220V voltages, with each phase electric main
Time voltage crosses zero point is that time reference synchronizes processing, effectively carries out the accurate division of each phase electric main call duration time,
Each phase electric main is set to carry out carrier communication in 3.3ms times centered on by this phase voltage zero crossing.In grid cyclic wave
There are one time voltage crosses zero point, concentrator and each carrier modules for each phase electric main in (50Hz) half of cycle 10ms time
Between carry out low-voltage powerline carrier communication when using respective zero passage 3.3ms, improve whole operational efficiency；Zero passage is utilized simultaneously
Carrier signal is transmitted, the low-voltage power line carrier communication system of a taiwan area has natural identical synchronous base.
Using zero passage synchronous transmission technology and the concurrent technology of three-phase, the time on each physical channel of three-phase alternating current alternating current
Benchmark is separated by 3.3ms, and by three-phase alternating current alternating current according to the concurrent carrier signal of respective time reference, three-phase signal is when different
Between be transmitted in time slot, carrier module issues the inclined of zero-acrross ing moment according to phase zero-acrross ing moment where respective with concentrator order
It moves, accurately identifies the power supply phase of carrier module (electric energy meter).
The utility model without increasing hardware cost, lead by the crosstalk and high-frequency signal Coupling Between Phases that can effectively solve between taiwan area
The case where erroneous judgement of taiwan area belonging to causing and access phase, carrier signal can be improved in electricity using the modulation and demodulation method of OFDM technology
The distance and anti-interference ability transmitted in the line of force, to reduce since noise jamming leads to the probability of carrier signal transmission failure,
It is simple in structure, securely and reliably, while there is very strong practicability.
The preferred embodiment of the utility model described in detail above.It should be appreciated that the ordinary skill people of this field
Member according to the present utility model can conceive without creative work makes many modifications and variations.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality on the basis of existing technology according to the design of the utility model in domain
Available technical solution is tested, it all should be in the protection domain being defined in the patent claims.
Claims (8)
1. the taiwan area phase identification system based on low-voltage powerline carrier communication, it is characterised in that：Including Three Phase Carrier Based module, list
Phase carrier module, electric energy meter and concentrator, the Three Phase Carrier Based module are mounted in concentrator, the single-phase carrier module setting
Inside electric energy meter, the concentrator is connected to three-phase alternating current alternating current, and the electric energy meter is connected to the A phases of three-phase alternating current alternating current
Line, the three-phase alternating current alternating current are also associated with transformer, and the Three Phase Carrier Based module and single-phase carrier module include that zero passage is examined
It is equal to survey unit, power line carrier communication unit and micro controller unit, the zero passage detection unit, power line carrier communication unit
Connect micro controller unit.
2. the taiwan area phase identification system based on low-voltage powerline carrier communication as described in claim 1, it is characterised in that：Institute
Zero passage detection unit is stated to be made of AC zero passage detection circuit.
3. the taiwan area phase identification system based on low-voltage powerline carrier communication as described in claim 1, it is characterised in that：Institute
It includes carrier signal sending module and carrier signal receiving module to state power line carrier communication unit, and the carrier signal sends mould
Block is made of transmission low noise amplifier circuit.
4. the taiwan area phase identification system based on low-voltage powerline carrier communication as claimed in claim 3, it is characterised in that：Institute
Carrier signal sending module is stated to be made of reception low noise amplifier circuit and reception hardware filter.
5. the taiwan area phase identification system based on low-voltage powerline carrier communication as described in claim 1, it is characterised in that：Institute
It states zero passage detection unit and leads to the zero passage detection that zero cross detection circuit realizes low-voltage AC.
6. the taiwan area phase identification system based on low-voltage powerline carrier communication as described in claim 1, it is characterised in that：Institute
It states power line carrier communication unit and realizes that data transmission, the power carrier channel are power line by power carrier channel.
7. the taiwan area phase identification system based on low-voltage powerline carrier communication as claimed in claim 2, it is characterised in that：Institute
It includes resistance, the first diode, the second diode and amplifier, first diode and to state AC zero passage detection circuit
Between the in-phase input end and inverting input of the equal cascade amplifier of two diodes.
8. the taiwan area phase identification system based on low-voltage powerline carrier communication as claimed in claim 7, it is characterised in that：Institute
The in-phase input end for stating amplifier is also connected to phase line by resistance, between first diode and the second diode simultaneously
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721672038.9U CN207782805U (en) | 2017-12-05 | 2017-12-05 | Taiwan area phase identification system based on low-voltage powerline carrier communication |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721672038.9U CN207782805U (en) | 2017-12-05 | 2017-12-05 | Taiwan area phase identification system based on low-voltage powerline carrier communication |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687891A (en) * | 2018-12-11 | 2019-04-26 | 国网重庆市电力公司客户服务中心 | One kind being based on the area's recognition methods of broadband power line carrier platform |
| CN110687368A (en) * | 2019-07-16 | 2020-01-14 | 深圳智微电子科技有限公司 | OFDM carrier signal-based transformer state online monitoring system and method |
| CN115002825A (en) * | 2022-08-04 | 2022-09-02 | 深圳市子恒通讯设备有限公司 | Communication equipment and communication method |
-
2017
- 2017-12-05 CN CN201721672038.9U patent/CN207782805U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687891A (en) * | 2018-12-11 | 2019-04-26 | 国网重庆市电力公司客户服务中心 | One kind being based on the area's recognition methods of broadband power line carrier platform |
| CN109687891B (en) * | 2018-12-11 | 2021-11-23 | 国网重庆市电力公司客户服务中心 | Carrier region identification method based on broadband power line |
| CN110687368A (en) * | 2019-07-16 | 2020-01-14 | 深圳智微电子科技有限公司 | OFDM carrier signal-based transformer state online monitoring system and method |
| CN110687368B (en) * | 2019-07-16 | 2022-03-25 | 深圳智微电子科技有限公司 | OFDM carrier signal-based transformer state online monitoring method |
| CN115002825A (en) * | 2022-08-04 | 2022-09-02 | 深圳市子恒通讯设备有限公司 | Communication equipment and communication method |
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