CN105372496B - Phase identification device and method in supply network - Google Patents
Phase identification device and method in supply network Download PDFInfo
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- CN105372496B CN105372496B CN201510762650.4A CN201510762650A CN105372496B CN 105372496 B CN105372496 B CN 105372496B CN 201510762650 A CN201510762650 A CN 201510762650A CN 105372496 B CN105372496 B CN 105372496B
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Abstract
The invention discloses the phase recognition methods in a kind of supply network, belong to power line communication technology field.The method includes：Main control terminal records each moment that the first phase alternating current at supply terminals reaches specified phase angle from assigned direction；Main control terminal receives t at the time of alternating current send from terminal, from the corresponding electricity consumption point of terminal reaches specified phase angle from assigned directions；Main control terminal reaches each moment and the t of specified phase angle according to the first phase alternating current at supply terminals from assigned directions, determine the phase of the alternating current at electricity consumption point.Without manually carrying out point-to-point test phase, phase identification can be carried out to users all in supply network at any time using main control terminal and be improved efficiency to save human cost, eliminated safe hidden trouble；As long as also, in the period in main control terminal storage at the time of arbitrarily reporting from terminal, can accurately identify the phase of corresponding electricity consumption point, identification accuracy is high.
Description
Technical field
Phase identification device and side the present invention relates to power line communication technology field, in particular in a kind of supply network
Method.
Background technique
In existing supply network, backbone generally uses three-phase four-wire system or three-phase five-wire mode to be powered, supply terminals
Three-phase alternating current is dispensed, electricity consumption point (such as ordinarily resident user) only takes a certain phase as firewire, takes ground wire or neutral conductor conduct
Zero curve.
Since there are discretenesses for the electricity consumption of electricity consumption point each in supply network, it is easy to cause three-phase load on backbone
Imbalance, then lead to the three-phase voltage of supply terminals and the imbalance of electric current, to increase line loss, while can also dock
The operation of motor on supply terminals has adverse effect on.And mandatory provision must not count electricity consumption to electric administrative department
The phase of point, and be also difficult accurately to file the phase of each electricity consumption point during installation.Therefore, actively know in power supply process
The phase of not each electricity consumption point, just understanding network load situation to electric administrative department and carry out corresponding equilibrium allocation has very
Important meaning.
Summary of the invention
This application provides the phase identification device and methods in a kind of supply network.
In a first aspect, this application provides the phase recognition methods in a kind of supply network, this method may include：
Main control terminal records each moment that the first phase alternating current at supply terminals reaches specified phase angle from assigned direction,
The assigned direction is to rise or fall, and the phase angle of the alternating current in the supply network is in (- 180 °, 180 °) section；
The main control terminal receives alternating current sending from terminal, being somebody's turn to do from the corresponding electricity consumption point of terminal from the assigned direction
T at the time of reaching the specified phase angles；
The main control terminal reaches the specified phase angle from the assigned direction according to the first phase alternating current at the supply terminals
Each moment and ts, determine the phase of the alternating current at the electricity consumption point.
This programme can own without manually carrying out point-to-point test phase, using main control terminal in supply network at any time
User carries out phase identification and improves efficiency to save human cost, eliminates safe hidden trouble；Also, utilize same power frequency period
As reference quantity at the time of a certain stationary phase, as long as the period in main control terminal storage at the time of arbitrarily being reported from terminal
It is interior, the phase of corresponding electricity consumption point can be accurately identified, identification accuracy is high.
Second aspect, this application provides the phase recognition methods in a kind of supply network.This method includes：
T at the time of alternating current from terminal record electricity consumption point reaches specified phase angle from assigned directions, which is
It rises or falls, the phase angle of the alternating current in the supply network is in (- 180 °, 180 °) section；
T at the time of alternating current from the electricity consumption point is reached the specified phase angle from the assigned direction from terminal by thissIt is sent to
Main control terminal reaches the specified phase angle from the assigned direction according to the first phase alternating current of the supply terminals by the main control terminal
Each moment and ts, determine the phase of the alternating current at the electricity consumption point.
The realization step of second aspect is corresponding with above-mentioned first aspect, and the effect that can be realized can refer to first party
The associated description in face.
The third aspect, this application provides the phase identification device in a kind of supply network, the device include recording unit,
Receiving unit and determination unit.The device also includes one or more storage unit, for store one or one with
On instruction.Recording unit in the device is configured to execute the first instruction in above-metioned instruction, and receiving unit is configured to
The second instruction in above-metioned instruction is executed, determination unit is configured to execute the instruction of the third in above-metioned instruction.The device includes
Above-mentioned each unit realize the phase identification side in supply network provided by first aspect by executing corresponding instruction
Method.
Fourth aspect, this application provides the phase identification device in a kind of supply network, which includes recording unit
And transmission unit.The device also includes one or more storage unit, for storing one or more than one instruction.It should
Recording unit in device is configured to execute the 5th instruction in above-metioned instruction, and transmission unit is configured to execute above-metioned instruction
In the 6th instruction.Above-mentioned each unit that the device includes is realized provided by second aspect by executing corresponding instruction
Phase recognition methods in supply network.
Optionally, which reaches this from the assigned direction according to the first phase alternating current at the supply terminals and specifies
Each moment of phase angle and ts, determine the phase of the alternating current at the electricity consumption point, including：
First phase alternating current of the main control terminal at the supply terminals reaches each of the specified phase angle from the assigned direction
In a moment, determining and tsT at the time of in same power frequency periodm；
The main control terminal calculates tsWith tmBetween absolute difference Δ t；
The main control terminal determines tsAnd tmThe cycle duration T of the power frequency period at place；
The main control terminal determines the phase of the alternating current at the electricity consumption point according to Δ t and T.
Optionally, the alternating current at the supply terminals is three-phase alternating current, works as ts> tmWhen, the main control terminal is according to Δ t and T
Determine the phase of the alternating current at the electricity consumption point, including：
If Δ t is in section (T-tth, T+tth) or section [0, tth) in, it is determined that alternating current at the electricity consumption point
Phase is first phase；tthFor preset error value, and tth> 0；
If Δ t is in section (T/3-tth, T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is second
Phase；
If Δ t is in section (2T/3-tth, 2T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is the
Three phases；
Phase difference between the second phase and the first phase is 120 °, between the third phase and the first phase
Phase difference is 240 °.
Optionally, the alternating current at the supply terminals is three-phase alternating current, works as ts< tmWhen, the main control terminal is according to Δ t and T
Determine the phase of the alternating current at the electricity consumption point, including：
If Δ t is in section (T-tth, T+tth) or section [0, tth) in, it is determined that alternating current at the electricity consumption point
Phase is first phase；tthFor preset error value, and tth> 0；
If Δ t is in section (T/3-tth, T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is third
Phase；
If Δ t is in section (2T/3-tth, 2T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is the
Two phase；
Phase difference between the second phase and the first phase is 120 °, between the third phase and the first phase
Phase difference is 240 °.
Optionally, which determines tsAnd tmThe cycle duration T of the power frequency period at place, including：
Work as ts> tmWhen, it obtains the first phase alternating current at the supply terminals and reaches the specified phase angle from the assigned direction
In each moment, tmThe later moment in time t at momentm+1, determine T=tm+1-tm；
Work as ts< tmWhen, it obtains the first phase alternating current at the supply terminals and reaches the specified phase angle from the assigned direction
In each moment, tmThe previous moment t at momentm-1, determine T=tm-tm-1。
Optionally, which is 0 °.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the architecture diagram of network environment according to the present invention；
Fig. 2 is the hardware architecture diagram of the terminal in network environment shown in Fig. 1；
Fig. 3 A is the flow chart of the phase recognition methods in supply network provided by one embodiment of the present invention；
Fig. 3 B is showing of changing over time of the phase angle of each phase in a kind of three-phase alternating current shown in Fig. 3 A illustrated embodiment
It is intended to；
Fig. 3 C is a kind of flow chart of identification phase shown in Fig. 3 A illustrated embodiment；
Fig. 4 is the block diagram of the phase identification device in supply network provided by one embodiment of the present invention；
Fig. 5 is the block diagram of the phase identification device in supply network provided by one embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Referring to FIG. 1, it illustrates the architecture diagrams of network environment according to the present invention.The network includes being set with lower network
It is standby：Main control terminal 110 and at least one from terminal 120.
Main control terminal 110 is arranged in the supply terminals of the supply network of electric system, for example, the supply terminals can be change
Power station or power distribution station.From the electricity consumption point that the supply network of electric system is arranged in terminal 120, which be can be commonly
Ammeter or electricity box in resident family.
It is the three of low pressure (such as 220V or 110V etc.) that three-phase high-voltage alternating current in high-tension line is depressured by supply terminals
Phase alternating current, and the three-phase alternating current after decompression is conveyed to each electricity consumption point, electricity consumption point takes a phase therein as firewire.It is main
Control terminal 110 and from terminal 120 access supply network, pass through power line communication (English：Power Line
Communication, abbreviation：PLC) network carries out data transmission.
Referring to FIG. 2, it illustrates a kind of hardware architecture diagrams of terminal, wherein terminal 20 can be implemented as net shown in Fig. 1
Main control terminal in network environment or from terminal.In Fig. 2, terminal 20 may include：Processing component 201, power line modulatedemodulate
Adjust device 202, electricity interface 203 and memory 204.
Electricity interface 203 connect supply network power supply line and power line modem 202, processing component 201 with
Power line modem 202 is connected.Optionally, which can also include network interface 205, which connects
Enter internet, and is connected with processing component 201 or power line modem 202.
Processing component 201 can be central processing unit, coprocessor etc..Network interface 205 can be Ethernet interface or
Person's universal serial bus (English：Universal Serial Bus, abbreviation：USB) interface etc..Power line modem 202
The data that available processing component 201 or network interface 205 are sent, and modulate data onto the electric current of power supply line,
By power line transmission to other terminals in power supply line；Alternatively, power line modem 202 can also be by supply lines
The signal loaded in the electric current on road is demodulated into data, and is sent to processing component 201 and is handled, or be sent to network interface
206, other equipment are sent to by network interface 206.Memory 204 can store data or be executed by processing component 201
Instruction, can be realized by any kind of volatibility or non-volatile memory device or their combination, it is such as static with
Machine accesses memory (English：Static Random Access Memory, referred to as：SRAM), electrically erasable is read-only deposits
Reservoir (English：Electrically Erasable Programmable Read-Only Memory, referred to as：EEPROM), may be used
Erasable programmable read-only memory (EPROM) (English：Erasable Programmable Read Only Memory, referred to as：EPROM),
Programmable read only memory (English：Programmable Read-Only Memory, referred to as：PROM), read-only memory (English
Text：Read Only Memory, referred to as：ROM), magnetic memory, flash memory, disk or CD.Correspondingly, memory 204
It can also include Memory Controller, to provide processing component 201 to the access control of memory.
Fig. 3 A is please referred to, it illustrates the streams of the phase recognition methods in supply network provided by one embodiment of the present invention
Cheng Tu.Phase recognition methods in the supply network can be used in implementation environment shown in FIG. 1.Phase in the supply network
Recognition methods may include：
Step 301, main control terminal to from terminal send enable phase identification instruction.
In power department main control terminal is installed in a power supply network for the first time and after terminal, main control terminal can send and open
With the instruction of phase identification.Alternatively, when new electricity consumption point is mounted in supply network and it is corresponding from terminal after, main control terminal
The instruction of the enabling phase identification can be sent.
Step 302, main control terminal continuously records the first phase alternating current at supply terminals and reaches specified phase from assigned direction
Each moment at angle.
Wherein, which is to rise or fall, the phase angle of the alternating current in the supply network be in (- 180 °,
180 °) in section.When the electric current supplied at supply terminals is three-phase alternating current, the alternating current in supply network includes three phases
Position, respectively first phase, second phase and third phase.Wherein the phase difference between second phase and the first phase is
120 °, the phase difference between the third phase and the first phase is 240 °.
For example, the schematic diagram that the phase angle for please referring to each phase in three-phase alternating current shown in Fig. 3 B changes over time, three-phase
Alternating current in Alternating Current Power Supply network is divided into three phases, respectively A phase, B phase and C phase, in synchronization, two neighboring phase
Alternating current between phase angle differ 120 °.In figure 3b, first phase is A phase, corresponding sine curve 31, second phase B
Phase, corresponding sine curve 32, third phase are C phase, corresponding sine curve 33.Period phase of three phases within the same period
Together, in synchronization point, phase B differs 120 ° with phase A, and phase C differs 240 ° with phase A.I.e. when the phase angle of phase A is upper
When being raised to some angle value, the phase angle of phase B will rise to the angle values, the phase angle of phase C after the one third period
The angle values will be risen to after 2/3rds periods.
It, can be to each electricity consumption point side from end when main control terminal wants the phase of each electricity consumption point in identification supply network
End sends an instruction, starts simultaneously at the first phase alternating current at continuous record supply terminals and reaches specified phase angle from assigned direction
Each moment point.
Step 303, the instruction for enabling phase identification is received from terminal.
Step 304, the phase of the alternating current from terminal record electricity consumption point reaches the specified phase angle from the assigned direction
Moment ts。
Step 305, from terminal by moment tsIt is sent to main control terminal.
After the instruction is received from terminal, the alternating current that also the corresponding electricity consumption of start recording is pointed out is reached from the assigned direction
T at the time of the specified phase angles.And the t that will be recordedsIt is sent to main control terminal.
Optionally, multiple t can continuously be recorded from terminals, and by continuous recording multiple tsIt is sent to master control end together
End.
Step 306, main control terminal receives moment ts。
Step 307, first phase alternating current of the main control terminal at the supply terminals reaches the specified phase from the assigned direction
In each moment at angle, determining and tsT at the time of in same power frequency periodm。
Optionally, the available current time t of main control terminal0, judge whether 0≤t of satisfaction0-ts≤tc；tcTo preset threshold
Value；If meeting 0≤t0-ts≤tc, then main control terminal execute first phase alternating current at the supply terminals from the assigned direction to
Up in each moment for specifying phase angle, determining and tsT at the time of in same power frequency periodmThe step of.
Since the storage space of main control terminal is limited, can only store in nearest a period of time, first at supply terminals
Multi-phase alternating current electricity reaches each time data of specified phase angle from assigned direction.For example, main control terminal only store current time it
Preceding tcData at the time of in duration, with current time at a distance of tcData except duration are deleted, for example, main control terminal only stores
Data (i.e. t at the time of before current time in 1 minutec=60s), then before 1 minute at the time of data can be deleted.Therefore,
T at the time of main control terminal, which is received, to be sent from terminalsWhen, first determine whether tsWhether the interval between current time is less than 1 point
Clock, if it is, being determined and tsT at the time of in same power frequency periodm, otherwise, main control terminal is by moment tsIt loses
It abandons.
tmCan be first phase alternating current that main control terminal records, at the supply terminals should from assigned direction arrival
In each moment of specified phase angle, it is in tsBefore or after first moment.
For example, if the first phase alternating current at the supply terminals is taken to reach each of the specified phase angle from the assigned direction
In moment, it is in tsFirst moment later is tm, then it is determined as t at the time of can meeting following inequalitym：
0≤ts-tm≤t'；
Wherein, t ' can be determined according to the average period of the alternating current in supply network, for example, when ac frequency is
When 50Hz, the average period of the alternating current is 1/50s, i.e. 20ms, considers error appropriate or delay, t ' can be set to
30ms, in principle, t ' need to be less than 2 times of average period.
Similarly, if the first phase alternating current at the supply terminals is taken to reach each of the specified phase angle from the assigned direction
In moment, it is in tsFirst moment before is tm, then it is determined as t at the time of can meeting following inequalitym：
0≤tm-ts≤t’。
Step 308, main control terminal calculates tsWith tmBetween absolute difference Δ t, and determine tsAnd tmThe power frequency period at place
Cycle duration T.
Optionally, work as ts> tmWhen, obtain the first phase alternating current at the supply terminals be in the specified phase angle it is each when
In quarter, it is in tmThe later moment in time t at momentm+1, determine T=tm+1-tm；Work as ts< tmWhen, obtain the first phase at the supply terminals
Alternating current was in each moment of the specified phase angle, was in tmThe previous moment t at momentm-1, determine T=tm-tm-1。
Due to period in different time period of the alternating current in supply network and unstable, in order to improve the accurate of identification
Degree needs to combine t when identifying phasesAnd tmThe cycle duration of the power frequency period at place is calculated, specifically, if tmIt is in
tsLater, then by tm+1And tmBetween cycle duration of the time interval as the power frequency period, conversely, if tmIn tsBefore,
Then by tm-1And tmBetween cycle duration of the time interval as the power frequency period.
Step 309, main control terminal determines the phase of the alternating current at the electricity consumption point according to Δ t and T.
Wherein, work as ts> tmWhen, which determines the phase of the alternating current at the electricity consumption point according to Δ t and T, including：
If Δ t is in section (T-tth, T+tth) or section [0, tth) in, it is determined that the phase of the alternating current at the electricity consumption point is the
One phase；tthFor preset error value, and tth> 0；If Δ t is in section (T/3-tth, T/3+tth) in, it is determined that the electricity consumption point
The phase of the alternating current at place is second phase；If Δ t is in section (2T/3-tth, 2T/3+tth) in, it is determined that at the electricity consumption point
Alternating current phase be third phase；
Alternatively, working as ts< tmWhen, which determines the phase of the alternating current at the electricity consumption point according to Δ t and T, including：
If Δ t is in section (T-tth, T+tth) or section [0, tth) in, it is determined that the phase of the alternating current at the electricity consumption point is the
One phase；tthFor preset error value, and tth> 0；If Δ t is in section (T/3-tth, T/3+tth) in, it is determined that the electricity consumption point
The phase of the alternating current at place is third phase；If Δ t is in section (2T/3-tth, 2T/3+tth) in, it is determined that at the electricity consumption point
Alternating current phase be second phase.
Wherein, tthFor the error that system allows, which can be by exploitation or maintenance personnel according to the actual situation voluntarily
Setting, optionally, the tthIt can be set to for ten half average periods.For example, when being 50Hz with ac frequency, it is average
For period is 20ms, tthIt can be set to 1.2ms.
It is known that and between other two phases and the phase at the time of a certain phase reaches specified phase angle from assigned direction
Phase angle difference it is also known that in the case where, if can know a unknown phase in same power frequency period, from the same direction reach
At the time of phase inphase angle, so that it may it is accurately judged to which phase is the unknown phase be, for example, by taking Fig. 3 B as an example, as phase A
Phase angle when rising at 0, ideally, the phase angle of phase B will rise to 0 after T/3, and the phase angle of phase C will be in 2T/
0 is risen to after 3.In conjunction with Fig. 3 B, it is contemplated that error condition is detecting t if first phase is phase AsAnd tmBetween
Absolute difference in the error range before and after 0 or T, then can determine the unknown phase be phase A；If tsAnd tmBetween
Absolute difference can then determine that the unknown phase is phase B in the error range before and after T/3；If tsAnd tmBetween absolute difference
Value can then determine that the unknown phase is phase C in the error range before and after 2T/3.
For example, in conjunction with Fig. 3 B, with this specify phase angle be 0 ° (also referred to as zero-acrross ing moment at the time of exchange electrical phase angle reaches 0 °),
For for 0 moment, the time difference between reference point phase angle is corresponding with each phase at the time of the phase of phase A reaches specified phase angle
Relationship is as shown in the table：
It is 50Hz with the alternating current average frequency of power supply circuit, for all zero-acrross ing moments are obtained by failing edge, master control
Terminal control the whole network starts to start phase identification, and main control terminal is in the exchange of phase identification stage Coutinuous store own phase A
In the zero-acrross ing moment of failing edge, all slave terminals for being connected to identification instruction record the zero-acrross ing moments of itself n power frequency period, deposit electricity
Main control terminal is reported to after full.After main control terminal is connected to the data reported from terminal, with the comparing of itself storage, look for first
Time data constantly in same power frequency period are reported to from terminal, calculate this from terminal further according to the difference of time
Phase.Fig. 3 C is please referred to, it illustrates a kind of flow chart for identifying phase, the detailed process is as follows：
Step 31, zero-acrross ing moment t is reported from terminals；
Step 32, main control terminal judges tsWhether it is less than t with the time difference at main control terminal current timec(60s), if so,
33 are entered step, otherwise return step 31；
Step 33, main control terminal is found out and t in the time data of storagesT at the time of same periodm, and tmIn tsIt
Before, i.e. 0≤ts-tm≤ 30ms indicates t using Δ tmWith tsTime difference；
Step 34, main control terminal calculates tmWith tsThe time span T of place power frequency period；
Step 35, main control terminal calculates tmWith tsTime difference Δ t；
Step 36, main control terminal obtains the phase of website to be measured by comparing.Wherein, Δ t belongs to (T-tth, T+tth) or
(-tth, tth) when, the phase from the alternating current of terminal side is phase A；Δ t belongs to (T/3-tth, T/3+tth) when, from terminal side
The phase of alternating current is phase B；Δ t belongs to (2T/3-tth, 2T/3+tth) when, the phase from the alternating current of terminal side is phase
C。
Optionally, above-mentioned process can use handheld device also to realize, main control terminal is connected to the phase of switchgear house
A will be connected to electricity consumption point from terminal, both can initiate phase identification by main control end after the two establishes communication.
Scheme through the invention, without manually carrying out point-to-point test phase in power wire broadband carrier communication system
Position can carry out phase identification to users all in supply network at any time using main control terminal, can save human cost, improve
Efficiency eliminates safe hidden trouble.As reference quantity at the time of stationary phase a certain using same power frequency period, meet in power frequency period
Under conditions of 47Hz-53Hz, the phase of electricity consumption point can be accurately judged, there is no erroneous judgement situations, arbitrarily report from terminal
As long as the moment was in the period of main control terminal storage, the phase of corresponding electricity consumption point can be accurately identified.
In conclusion the phase recognition methods in supply network shown in the embodiment of the present invention, are recorded by main control terminal
First phase alternating current at supply terminals reaches each moment of specified phase angle from assigned direction, receive it is being sent from terminal, this
T at the time of alternating current from the corresponding electricity consumption point of terminal reaches the specified phase angle from the assigned directions, at the supply terminals
First phase alternating current each moment and the t of the specified phase angle are reached from the assigned directions, determine the friendship at the electricity consumption point
The phase of galvanic electricity at any time can be useful to institute in supply network using main control terminal without manually carrying out point-to-point test phase
Family carries out phase identification and improves efficiency to save human cost, eliminates safe hidden trouble；Also, utilize same power frequency period
As reference quantity at the time of one stationary phase, as long as the period in main control terminal storage at the time of arbitrarily being reported from terminal
It is interior, the phase of corresponding electricity consumption point can be accurately identified, identification accuracy is high.
Referring to FIG. 4, it illustrates the frames of the phase identification device in supply network provided by one embodiment of the present invention
Figure.The device can be embodied as the portion of the main control terminal 110 of implementation environment shown in Fig. 1 by way of hardware or soft or hard combination
Divide or whole, to execute such as all or part of step as performed by main control terminal in Fig. 3.The apparatus may include：
Recording unit 401, receiving unit 402 and determination unit 403；
The recording unit 401 reaches specified phase from assigned direction for recording the first phase alternating current at supply terminals
Each moment at angle, the assigned direction are to rise or fall, the phase angle of the alternating current in the supply network be in (- 180 °,
180 °) in section；
The receiving unit 402, for receiving the alternating current from the corresponding electricity consumption point of terminal send from terminal, described
T at the time of reaching the specified phase angle from the assigned directions；
The determination unit 403, for according to the first phase alternating current at the supply terminals from the assigned direction to
Each moment and t up to the specified phase angles, determine the phase of the alternating current at the electricity consumption point.
Optionally, the determination unit 403, for the first phase alternating current at the supply terminals from the designated parties
Into each moment for reaching the specified phase angle, determining and tsT at the time of in same power frequency periodm, calculate tsWith tmIt
Between absolute difference Δ t, determine tsAnd tmThe cycle duration T of the power frequency period at place is determined at the electricity consumption point according to Δ t and T
Alternating current phase.
Optionally, the alternating current at the supply terminals is three-phase alternating current, and the determination unit 403 is true according to Δ t and T
The phase of alternating current at the fixed electricity consumption point, and ts> tmWhen, it is specifically used for,
If Δ t is in section (T-tth, T+tth) or section [0, tth) in, it is determined that the alternating current at the electricity consumption point
Phase be first phase；tthFor preset error value, and tth> 0；
If Δ t is in section (T/3-tth, T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is the
Two phase；
If Δ t is in section (2T/3-tth, 2T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is
Third phase；
Phase angle difference between the second phase and the first phase is 120 °, the third phase and first phase
Phase angle difference between position is 240 °.
Optionally, the alternating current at the supply terminals is three-phase alternating current, and the determination unit 403 is determined according to Δ t and T
The phase of alternating current at the electricity consumption point, and ts> tmWhen, it is specifically used for,
If Δ t is in section (T-tth, T+tth) or section [0, tth) in, it is determined that the alternating current at the electricity consumption point
Phase be first phase；tthFor preset error value, and tth> 0；
If Δ t is in section (T/3-tth, T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is the
Three phases；
If Δ t is in section (2T/3-tth, 2T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is
Second phase；
Phase difference between the second phase and the first phase is 120 °, the third phase and first phase
Phase difference between position is 240 °.
Optionally, the determination unit 403 is determining tsAnd tmIt is specific to use when the cycle duration T of the power frequency period at place
In,
Work as ts> tmWhen, it obtains the first phase alternating current at the supply terminals and reaches described specify from the assigned direction
In each moment of phase angle, tmThe later moment in time t at momentm+1, determine T=tm+1-tm；
Work as ts< tmWhen, it obtains the first phase alternating current at the supply terminals and reaches described specify from the assigned direction
In each moment of phase angle, tmThe previous moment t at momentm-1, determine T=tm-tm-1。
Optionally, the specified phase angle is 0 °.
In conclusion the phase identification device in supply network shown in the embodiment of the present invention, is recorded by main control terminal
First phase alternating current at supply terminals reaches each moment of specified phase angle from assigned direction, receive it is being sent from terminal, this
T at the time of alternating current from the corresponding electricity consumption point of terminal reaches the specified phase angle from the assigned directions, at the supply terminals
First phase alternating current each moment and the t of the specified phase angle are reached from the assigned directions, determine the friendship at the electricity consumption point
The phase of galvanic electricity at any time can be useful to institute in supply network using main control terminal without manually carrying out point-to-point test phase
Family carries out phase identification and improves efficiency to save human cost, eliminates safe hidden trouble；Also, utilize same power frequency period
As reference quantity at the time of one stationary phase, as long as the period in main control terminal storage at the time of arbitrarily being reported from terminal
It is interior, the phase of corresponding electricity consumption point can be accurately identified, identification accuracy is high.
Referring to FIG. 5, it illustrates the frames of the phase identification device in supply network provided by one embodiment of the present invention
Figure.The device can be embodied as the part of the slave terminal 120 of implementation environment shown in Fig. 1 by way of hardware or soft or hard combination
Or all, to execute as in Fig. 3 as all or part of step performed by the terminal.The apparatus may include：Record
Unit 501 and transmission unit 502；
The recording unit, t at the time of reaching specified phase angle from assigned direction for the alternating current at electricity consumption points, described
Assigned direction is to rise or fall, and the phase angle of the alternating current in the supply network is in (- 180 °, 180 °) section；
The transmission unit, for the alternating current at the electricity consumption point to be reached the specified phase angle from the assigned direction
At the time of tsIt is sent to main control terminal, is in described according to the first phase alternating current of the supply terminals by the main control terminal
Each moment of specified phase angle and ts, determine the phase of the alternating current at the electricity consumption point.
In conclusion the phase identification device in supply network shown in the embodiment of the present invention, is recorded by main control terminal
First phase alternating current at supply terminals reaches each moment of specified phase angle from assigned direction, from terminal by corresponding electricity consumption point
The t at the time of alternating current at place reaches the specified phase angle from the assigned directionsIt is sent to main control terminal, by main control terminal according to the confession
First phase alternating current at electric point reaches each moment and the t of the specified phase angle from the assigned directions, determine the electricity consumption point
The phase of the alternating current at place at any time can be in supply network using main control terminal without manually carrying out point-to-point test phase
All users carry out phase identification and improve efficiency to save human cost, eliminate safe hidden trouble；Also, utilize same power frequency
As reference quantity at the time of period a certain stationary phase, if at the time of arbitrarily being reported from terminal in main control terminal storage when
Between in section, the phase of corresponding electricity consumption point can be accurately identified, identification accuracy is high.
It should be noted that：Phase recognition methods in supply network provided by the above embodiment, in identification electricity consumption point
When phase, only with the division progress of above-mentioned each functional unit for example, in practical application, it can according to need and by above-mentioned function
It can distribute and be completed by different functional units, i.e., the internal structure of terminal is divided into different functional units, more than completing
The all or part of function of description.In addition, phase identification device and power supply network in supply network provided by the above embodiment
Phase recognition methods embodiment in network belongs to same design, and specific implementation process is detailed in embodiment of the method, no longer superfluous here
It states.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Claims (10)
1. the phase identification device in a kind of supply network, which is characterized in that in main control terminal, described device to include：
Recording unit, for record the first phase alternating current at supply terminals from assigned direction reach specified phase angle it is each when
It carves, the assigned direction is to rise or fall, and the phase angle of the alternating current in the supply network is in (- 180 °, 180 °) section
It is interior；
Receiving unit is specified for receiving the alternating current from the corresponding electricity consumption point of terminal send from terminal, described from described
T at the time of direction reaches the specified phase angles；
Determination unit reaches the specified phase angle from the assigned direction for the first phase alternating current at the supply terminals
Each moment in, determining and tsT at the time of in same power frequency periodm, calculate tsWith tmBetween absolute difference Δ t, really
Determine tsAnd tmThe cycle duration T of the power frequency period at place determines the phase of the alternating current at the electricity consumption point according to Δ t and T；
Wherein, the alternating current at the supply terminals is three-phase alternating current；
Work as ts> tmWhen, the determination unit is specifically used for,
If Δ t is in section (T-tth, T+tth) or section [0, tth) in, it is determined that the phase of the alternating current at the electricity consumption point
Position is first phase；tthFor preset error value, and tth> 0；
If Δ t is in section (T/3-tth, T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is the second phase
Position；
If Δ t is in section (2T/3-tth, 2T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is third phase
Position；
Phase angle difference between the second phase and the first phase is 120 °, the third phase and the first phase it
Between phase angle difference be 240 °.
2. the apparatus according to claim 1, which is characterized in that the determination unit is determining the electricity consumption according to Δ t and T
The phase of alternating current at point, and ts> tmWhen, it is specifically used for,
If Δ t is in section (T-tth, T+tth) or section [0, tth) in, it is determined that the phase of the alternating current at the electricity consumption point
Position is first phase；tthFor preset error value, and tth> 0；
If Δ t is in section (T/3-tth, T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is third phase
Position；
If Δ t is in section (2T/3-tth, 2T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is the second phase
Position；
Phase difference between the second phase and the first phase is 120 °, the third phase and the first phase it
Between phase difference be 240 °.
3. the apparatus according to claim 1, which is characterized in that the determination unit is determining tsAnd tmThe power frequency week at place
When the cycle duration T of phase, it is specifically used for,
Work as ts> tmWhen, it obtains the first phase alternating current at the supply terminals and reaches the specified phase angle from the assigned direction
Each moment in, tmThe later moment in time t at momentm+1, determine T=tm+1-tm；
Work as ts< tmWhen, it obtains the first phase alternating current at the supply terminals and reaches the specified phase angle from the assigned direction
Each moment in, tmThe previous moment t at momentm-1, determine T=tm-tm-1。
4. device according to any one of claims 1 to 3, which is characterized in that the specified phase angle is 0 °.
5. the phase identification device in a kind of supply network, which is characterized in that for from terminal, described device to include：
Recording unit, t at the time of reaching specified phase angle from assigned direction for the alternating current at electricity consumption points, the assigned direction is
It rises or falls, the phase angle of the alternating current in the supply network is in (- 180 °, 180 °) section；
Transmission unit, t at the time of for the alternating current at the electricity consumption point to be reached the specified phase angle from the assigned directions
Be sent to main control terminal, by the main control terminal supply terminals first phase alternating current from the assigned direction reach described in
In each moment of specified phase angle, determining and tsT at the time of in same power frequency periodm, calculate tsWith tmBetween absolute difference
It is worth Δ t, determines tsAnd tmThe cycle duration T of the power frequency period at place determines the alternating current at the electricity consumption point according to Δ t and T
Phase；
Wherein, the alternating current at the supply terminals is three-phase alternating current；
Work as ts> tmWhen, the main control terminal is specifically used for,
If Δ t is in section (T-tth, T+tth) or section [0, tth) in, it is determined that the phase of the alternating current at the electricity consumption point
Position is first phase；tthFor preset error value, and tth> 0；
If Δ t is in section (T/3-tth, T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is the second phase
Position；
If Δ t is in section (2T/3-tth, 2T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is third phase
Position；
Phase angle difference between the second phase and the first phase is 120 °, the third phase and the first phase it
Between phase angle difference be 240 °.
6. the phase recognition methods in a kind of supply network, which is characterized in that the method includes：
Main control terminal records each moment that the first phase alternating current at supply terminals reaches specified phase angle from assigned direction, described
Assigned direction is to rise or fall, and the phase angle of the alternating current in the supply network is in (- 180 °, 180 °) section；
The main control terminal receives the alternating current from the corresponding electricity consumption point of terminal send from terminal, described from the designated parties
To t at the time of reaching the specified phase angles；
First phase alternating current of the main control terminal at the supply terminals reaches the specified phase angle from the assigned direction
Each moment in, determining and tsT at the time of in same power frequency periodm；
The main control terminal calculates tsWith tmBetween absolute difference Δ t；
The main control terminal determines tsAnd tmThe cycle duration T of the power frequency period at place；
The main control terminal determines the phase of the alternating current at the electricity consumption point according to Δ t and T；
Wherein, the alternating current at the supply terminals is three-phase alternating current；
Work as ts> tmWhen, the main control terminal determines the phase of the alternating current at the electricity consumption point according to Δ t and T, including：
If Δ t is in section (T-tth, T+tth) or section [0, tth) in, it is determined that the phase of the alternating current at the electricity consumption point
Position is first phase；tthFor preset error value, and tth> 0；
If Δ t is in section (T/3-tth, T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is the second phase
Position；
If Δ t is in section (2T/3-tth, 2T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is third phase
Position；
Phase difference between the second phase and the first phase is 120 °, the third phase and the first phase it
Between phase difference be 240 °.
7. according to the method described in claim 6, working as t it is characterized in that, alternating current at the supply terminals is three-phase alternating currents
< tmWhen, the main control terminal determines the phase of the alternating current at the electricity consumption point according to Δ t and T, including：
If Δ t is in section (T-tth, T+tth) or section [0, tth) in, it is determined that the phase of the alternating current at the electricity consumption point
Position is first phase；tthFor preset error value, and tth> 0；
If Δ t is in section (T/3-tth, T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is third phase
Position；
If Δ t is in section (2T/3-tth, 2T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is the second phase
Position；
Phase difference between the second phase and the first phase is 120 °, the third phase and the first phase it
Between phase difference be 240 °.
8. according to the method described in claim 6, it is characterized in that, the main control terminal determines tsAnd tmThe power frequency period at place
Cycle duration T, including：
Work as ts> tmWhen, it obtains the first phase alternating current at the supply terminals and reaches the specified phase angle from the assigned direction
Each moment in, tmThe later moment in time t at momentm+1, determine T=tm+1-tm；
Work as ts< tmWhen, it obtains the first phase alternating current at the supply terminals and reaches the specified phase angle from the assigned direction
Each moment in, tmThe previous moment t at momentm-1, determine T=tm-tm-1。
9. according to any method of claim 6 to 8, which is characterized in that the specified phase angle is 0 °.
10. the phase recognition methods in a kind of supply network, which is characterized in that the method includes：
T at the time of alternating current from terminal record electricity consumption point reaches specified phase angle from assigned directions, the assigned direction is upper
It rises or declines, the phase angle of the alternating current in the supply network is in (- 180 °, 180 °) section；
It is described from terminal by the alternating current from the electricity consumption point from the assigned direction reach the specified phase angle at the time of tsIt sends
To main control terminal, reached from the assigned direction by the main control terminal in the first phase alternating current of the supply terminals described in
In each moment of specified phase angle, determining and tsT at the time of in same power frequency periodm；
The main control terminal calculates tsWith tmBetween absolute difference Δ t；
The main control terminal determines tsAnd tmThe cycle duration T of the power frequency period at place；
The main control terminal determines the phase of the alternating current at the electricity consumption point according to Δ t and T；
Wherein, the alternating current at the supply terminals is three-phase alternating current；
Work as ts> tmWhen, the main control terminal determines the phase of the alternating current at the electricity consumption point according to Δ t and T, including：
If Δ t is in section (T-tth, T+tth) or section [0, tth) in, it is determined that the phase of the alternating current at the electricity consumption point
Position is first phase；tthFor preset error value, and tth> 0；
If Δ t is in section (T/3-tth, T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is the second phase
Position；
If Δ t is in section (2T/3-tth, 2T/3+tth) in, it is determined that the phase of the alternating current at the electricity consumption point is third phase
Position；
Phase difference between the second phase and the first phase is 120 °, the third phase and the first phase it
Between phase difference be 240 °.
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| CN107147430B (en) * | 2017-06-26 | 2020-06-19 | 国网上海市电力公司 | Power phase identification method based on carrier communication |
| CN108173571B (en) * | 2017-12-29 | 2021-09-21 | 国网北京市电力公司 | Phase transmission method, phase transmission device, storage medium and processor |
| CN108535599B (en) * | 2018-04-16 | 2020-06-30 | 国网河南省电力公司电力科学研究院 | Low-voltage transformer area user phase identification method based on voltage curve clustering analysis |
| CN110412365B (en) * | 2019-08-21 | 2020-09-01 | 广东电网有限责任公司 | Distribution network low-voltage user load phase checking instrument |
| CN111147108B (en) * | 2019-12-25 | 2021-10-22 | 天地融科技股份有限公司 | Transmission signal receiving method and equipment |
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