CN105372496A - Phase identification device and phase identification method in power supply network - Google Patents
Phase identification device and phase identification method in power supply network Download PDFInfo
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- CN105372496A CN105372496A CN201510762650.4A CN201510762650A CN105372496A CN 105372496 A CN105372496 A CN 105372496A CN 201510762650 A CN201510762650 A CN 201510762650A CN 105372496 A CN105372496 A CN 105372496A
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Abstract
The invention discloses a phase identification method in a power supply network and belongs to the power line communication technology field. The method comprises steps that, each moment of a first phase AC at a power supply point portion from a designated direction to a designated phase angle is recorded by a main control terminal; a moment ts of the AC at an electricity point portion corresponding to a secondary terminal and sent by the secondary terminal from the designated direction to the designated phase angle is received by the main control terminal; a phase of the AC at the electricity point portion is determined by the main control terminal according to each moment of the first phase AC at the power supply portion from the designated direction to the designated phase angle and the ts, so manual point-to-point phase testing is not needed, the main control terminal can be utilized to carry out phase identification on all users in the power supply network, so manpower cost is saved, efficiency is improved, hidden safety trouble is eliminated, moreover, any moment which is reported by the secondary terminal and is within a time segment stored by the main control terminal can accurately identify the phase of the corresponding electricity point, and identification accuracy is high.
Description
Technical field
The present invention relates to power line communication technology field, the phase identification device and method particularly in a kind of supply network.
Background technology
In existing supply network, backbone generally adopts three-phase four-wire system or three-phase five-wire mode to power, and supply terminals dispensing three-phase alternating current, electricity consumption point (such as ordinarily resident user) is only got a certain as live wire, gets ground wire or the neutral line as zero line.
Because in supply network, the power consumption of each electricity consumption point exists discreteness, be easy to cause the imbalance of three-phase load on backbone, then the three-phase voltage of supply terminals and the imbalance of electric current is caused, thus increase line loss, the operation that simultaneously also can be docked at the motor on supply terminals produces adverse influence.And electric administrative department not mandatory provision must add up the phase place of electricity consumption point, and be also difficult to the phase place of the accurately each electricity consumption point of filing in installation process.Therefore, the phase place of each electricity consumption point of initiative recognition in power supply process, just electric administrative department being understood to network load situation and carried out corresponding equilibrium allocation has very important meaning.
Summary of the invention
This application provides the phase identification device and method in a kind of supply network.
First aspect, this application provides the phase recognition methods in a kind of supply network, and the method can comprise:
The first phase alternating current at main control terminal record supply terminals place arrives each moment of specifying phase angle from assigned direction, this assigned direction is for rising or declining, and the phase angle of the alternating current in this supply network is in (-180 °, 180 °) interval;
This main control terminal receives that send from terminal, should arrive this appointment phase angle from the alternating current of electricity consumption point corresponding to terminal from this assigned direction moment t
s;
This main control terminal arrives each moment and the t of this appointment phase angle from this assigned direction according to the first phase alternating current at this supply terminals place
s, determine the phase place of the alternating current at this electricity consumption point place.
This programme, without the need to manually carrying out point-to-point test phase, utilizes main control terminal can carry out phase identification to users all in supply network at any time, thus saves human cost, raises the efficiency, eliminates safe hidden trouble; Further, utilize the moment of a certain stationary phase of same power frequency period as with reference to amount, as long as be in from the moment of terminal to report arbitrarily in the time period of main control terminal storage, accurately can identify the phase place of corresponding electricity consumption point, identify that accuracy is high.
Second aspect, this application provides the phase recognition methods in a kind of supply network.The method comprises:
The moment t specifying phase angle is arrived from the alternating current of terminal record electricity consumption point from assigned direction
s, this assigned direction is for rising or declining, and the phase angle of the alternating current in this supply network is in (-180 °, 180 °) interval;
From terminal, the alternating current of this electricity consumption point should be arrived the moment t of this appointment phase angle from this assigned direction
ssend to main control terminal, arrived each moment and the t of this appointment phase angle by this main control terminal according to the first phase alternating current of this supply terminals from this assigned direction
s, determine the phase place of the alternating current at this electricity consumption point place.
The performing step of second aspect is corresponding with above-mentioned first aspect, and its effect that can realize can with reference to the associated description of first aspect.
The third aspect, this application provides the phase identification device in a kind of supply network, this device comprises record cell, receiving element and determining unit.This device also comprises one or more storage unit, for storing one or more than one instruction.Record cell in this device is configured to the first instruction performed in above-mentioned instruction, and receiving element is configured to the second instruction performed in above-mentioned instruction, and determining unit is configured to the 3rd instruction performed in above-mentioned instruction.The phase recognition methods that the above-mentioned unit that this device comprises realizes in the supply network that first aspect provides by performing corresponding instruction.
Fourth aspect, this application provides the phase identification device in a kind of supply network, this device comprises record cell and transmitting element.This device also comprises one or more storage unit, for storing one or more than one instruction.Record cell in this device is configured to the five fingers order performed in above-mentioned instruction, and transmitting element is configured to the 6th instruction performed in above-mentioned instruction.The phase recognition methods that the above-mentioned unit that this device comprises realizes in the supply network that second aspect provides by performing corresponding instruction.
Optionally, this main control terminal arrives each moment and the t of this appointment phase angle from this assigned direction according to the first phase alternating current at this supply terminals place
s, determine the phase place of the alternating current at this electricity consumption point place, comprising:
The first phase alternating current of this main control terminal at this supply terminals place, from each moment that this assigned direction arrives this appointment phase angle, is determined and t
sbe in the moment t in same power frequency period
m;
This main control terminal calculates t
swith t
mbetween absolute difference Δ t;
This main control terminal determines t
sand t
mthe cycle duration T of the power frequency period at place;
This main control terminal determines the phase place of the alternating current at this electricity consumption point place according to Δ t and T.
Optionally, the alternating current at this supply terminals place is three-phase alternating current, works as t
s> t
mtime, this main control terminal determines the phase place of the alternating current at this electricity consumption point place according to Δ t and T, comprising:
If Δ t is in interval (T-t
th, T+t
th) or interval [0, t
th) in, then determine that the phase place of the alternating current at this electricity consumption point place is first phase; t
thfor preset error value, and t
th> 0;
If Δ t is in interval (T/3-t
th, T/3+t
th) in, then determine that the phase place of the alternating current at this electricity consumption point place is second phase;
If Δ t is in interval (2T/3-t
th, 2T/3+t
th) in, then determine that the phase place of the alternating current at this electricity consumption point place is third phase;
Phase differential between this second phase and this first phase is 120 °, and the phase differential between this third phase and this first phase is 240 °.
Optionally, the alternating current at this supply terminals place is three-phase alternating current, works as t
s< t
mtime, this main control terminal determines the phase place of the alternating current at this electricity consumption point place according to Δ t and T, comprising:
If Δ t is in interval (T-t
th, T+t
th) or interval [0, t
th) in, then determine that the phase place of the alternating current at this electricity consumption point place is first phase; t
thfor preset error value, and t
th> 0;
If Δ t is in interval (T/3-t
th, T/3+t
th) in, then determine that the phase place of the alternating current at this electricity consumption point place is third phase;
If Δ t is in interval (2T/3-t
th, 2T/3+t
th) in, then determine that the phase place of the alternating current at this electricity consumption point place is second phase;
Phase differential between this second phase and this first phase is 120 °, and the phase differential between this third phase and this first phase is 240 °.
Optionally, this main control terminal determines t
sand t
mthe cycle duration T of the power frequency period at place, comprising:
Work as t
s> t
mtime, obtain the first phase alternating current at this supply terminals place from each moment that this assigned direction arrives this appointment phase angle, t
ma rear moment t in moment
m+1, determine T=t
m+1-t
m;
Work as t
s< t
mtime, obtain the first phase alternating current at this supply terminals place from each moment that this assigned direction arrives this appointment phase angle, t
mthe previous moment t in moment
m-1, determine T=t
m-t
m-1.
Optionally, this appointment phase angle is 0 °.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the Organization Chart of network environment involved in the present invention;
Fig. 2 is the hardware structure figure of the terminal in network environment shown in Fig. 1;
Fig. 3 A is the process flow diagram of the phase recognition methods in the supply network that provides of one embodiment of the invention;
Fig. 3 B is the time dependent schematic diagram of phase angle of each phase place in a kind of three-phase alternating current shown in Fig. 3 A illustrated embodiment;
Fig. 3 C is a kind of process flow diagram identifying phase place shown in Fig. 3 A illustrated embodiment;
Fig. 4 is the block diagram of the phase identification device in the supply network that provides of one embodiment of the invention;
Fig. 5 is the block diagram of the phase identification device in the supply network that provides of one embodiment of the invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Please refer to Fig. 1, it illustrates the Organization Chart of network environment involved in the present invention.This network comprises the following network equipment: main control terminal 110 and at least one is from terminal 120.
Main control terminal 110 is in the supply terminals of the supply network being arranged on electric system, and such as, this supply terminals can be transformer station or distribution substation.Be arranged on the electricity consumption point of the supply network of electric system from terminal 120, this electricity consumption point can be ammeter in ordinarily resident user family or table case.
Three-phase high-voltage alternating current step-down in high-tension line is the three-phase alternating current of low pressure (such as 220V or 110V etc.) by supply terminals, and the three-phase alternating current after step-down is flowed to each electricity consumption point, electricity consumption point get wherein one as live wire.Main control terminal 110 and access supply network from terminal 120, by power line communication (English: PowerLineCommunication, abbreviation: PLC) network carries out data transmission.
Please refer to Fig. 2, it illustrates a kind of hardware structure figure of terminal, wherein, terminal 20 can be implemented as main control terminal in network environment shown in Fig. 1 or from terminal.In fig. 2, terminal 20 can comprise: processing components 201, power line modem 202, electricity interface 203 and storer 204.
Electricity interface 203 connects supply line and the power line modem 202 of supply network, and processing components 201 is connected with power line modem 202.Optionally, this terminal 20 can also comprise network interface 205, this network interface 206 accessing Internet network, and is connected with processing components 201 or power line modem 202.
Processing components 201 can be central processing unit, coprocessor etc.Network interface 205 can be Ethernet interface or USB (universal serial bus) (English: UniversalSerialBus, abbreviation: USB) interface etc.Power line modem 202 can obtain the data of processing components 201 or network interface 205 transmission, and by Data Modulation in the electric current of supply line, by power line transmission to other terminal in supply line; Or the signal receiving loaded in the electric current of supply line can be also data by power line modem 202, and sends to processing components 201 to process, or sends to network interface 206, sends to miscellaneous equipment by network interface 206.The instruction that storer 204 can store data or be performed by processing components 201, it can be realized by the volatibility of any type or non-volatile memory device or their combination, as static RAM is (English: StaticRandomAccessMemory, be called for short: SRAM), Electrically Erasable Read Only Memory is (English: ElectricallyErasableProgrammableRead-OnlyMemory, be called for short: EEPROM), Erasable Programmable Read Only Memory EPROM is (English: ErasableProgrammableReadOnlyMemory, be called for short: EPROM), programmable read only memory is (English: ProgrammableRead-OnlyMemory, be called for short: PROM), ROM (read-only memory) is (English: ReadOnlyMemory, be called for short: ROM), magnetic store, flash memory, disk or CD.Correspondingly, storer 204 can also comprise Memory Controller, to provide the access control of processing components 201 pairs of storeies.
Please refer to Fig. 3 A, it illustrates the process flow diagram of the phase recognition methods in the supply network that one embodiment of the invention provides.Phase recognition methods in this supply network may be used in the implementation environment shown in Fig. 1.Phase recognition methods in this supply network can comprise:
Step 301, main control terminal is to sending the instruction of enabling phase identification from terminal.
Main control terminal is installed first in a power supply network and from after terminal, main control terminal can send the instruction of enabling phase identification at power department.Or when having installed new electricity consumption point and corresponding after terminal in supply network, main control terminal also can send the instruction that this enables phase identification.
Step 302, the first phase alternating current that main control terminal records supply terminals place continuously arrives each moment of specifying phase angle from assigned direction.
Wherein, this assigned direction is for rising or declining, and the phase angle of the alternating current in this supply network is in (-180 °, 180 °) interval.When the electric current of supply terminals place supply is three-phase alternating current, the alternating current in supply network comprises three phase places, is respectively first phase, second phase and third phase.Phase differential wherein between second phase and this first phase is 120 °, and the phase differential between this third phase and this first phase is 240 °.
Such as, please refer to the time dependent schematic diagram of phase angle of each phase place in the three-phase alternating current shown in Fig. 3 B, the alternating current in three-phase alternating-current powered network is divided into three phase places, is respectively A phase, B phase and C phase, at synchronization, the phase angle between the alternating current of adjacent two phase places differs 120 °.In figure 3b, first phase is A phase, corresponding sinusoidal curve 31, and second phase is B phase, corresponding sinusoidal curve 32, and third phase is C phase, corresponding sinusoidal curve 33.Three phase places cycle at one time in section is identical, and at synchronization point, phase place B differs 120 ° with phase place A, and phase place C differs 240 ° with phase place A.Namely when the phase angle of phase place A is when rising to some angle values, the phase angle of phase place B will rise to this angle values after three/one-period, and the phase angle of phase place C will rise to this angle values at 2/3rds all after dates.
When main control terminal wants the phase place identifying each electricity consumption point in supply network, can send an instruction to each electricity consumption point side from terminal, the first phase alternating current simultaneously starting to record continuously supply terminals place arrives each moment point of specifying phase angle from assigned direction.
Step 303, receives the instruction of enabling phase identification from terminal.
Step 304, arrives the moment t of this appointment phase angle from the phase place of the alternating current of terminal record electricity consumption point from this assigned direction
s.
Step 305, from terminal by this moment t
ssend to main control terminal.
After receiving this instruction from terminal, the alternating current that the electricity consumption also starting to record correspondence is pointed out arrives the moment t of this appointment phase angle from this assigned direction
s.And the t that will be recorded to
ssend to main control terminal.
Optionally, multiple t can be recorded continuously from terminal
s, and by continuous recording multiple t
ssend to main control terminal in the lump.
Step 306, main control terminal receives this moment t
s.
Step 307, the first phase alternating current of main control terminal at this supply terminals place, from each moment that this assigned direction arrives this appointment phase angle, is determined and t
sbe in the moment t in same power frequency period
m.
Optionally, main control terminal can obtain current time t
0, judge whether satisfied 0≤t
0-t
s≤ t
c; t
cfor predetermined threshold value; If meet 0≤t
0-t
s≤ t
c, then the first phase alternating current of main control terminal execution at this supply terminals place is from each moment that this assigned direction arrives this appointment phase angle, determines and t
sbe in the moment t in same power frequency period
mstep.
Because the storage space of main control terminal is limited, can only store in nearest a period of time, the first phase alternating current at supply terminals place arrives each time data of specifying phase angle from assigned direction.Such as, main control terminal only store current time before t
ctime data in duration, with current time at a distance of t
cdata outside duration are deleted, such as, main control terminal only store current time before time data (i.e. t in 1 minute
c=60s), then the time data before 1 minute can be deleted.Therefore, when main control terminal receives the moment t sent from terminal
stime, first judge t
sand whether the interval between current time is less than 1 minute, if so, then carry out determining and t
sbe in the moment t in same power frequency period
m, otherwise main control terminal is by this moment t
sabandon.
T
mcan be main control terminal record, first phase alternating current at this supply terminals place from each moment that this assigned direction arrives this appointment phase angle, be in t
sfirst moment before or afterwards.
Such as, if the first phase alternating current being taken at this supply terminals place is from each moment that this assigned direction arrives this appointment phase angle, t is in
sfirst moment is afterwards t
m, then the moment meeting following inequality can be defined as t
m:
0≤t
s-t
m≤t’；
Wherein, t ' can determine according to the average period of the alternating current in supply network, such as, when ac frequency is 50Hz, the average period of this alternating current is 1/50s, i.e. 20ms, consider suitable error or delay, t ' can be set to 30ms, and in principle, t ' needs the average period being less than 2 times.
In like manner, if the first phase alternating current being taken at this supply terminals place is from each moment that this assigned direction arrives this appointment phase angle, t is in
sfirst moment is before t
m, then the moment meeting following inequality can be defined as t
m:
0≤t
m-t
s≤t’。
Step 308, main control terminal calculates t
swith t
mbetween absolute difference Δ t, and determine t
sand t
mthe cycle duration T of the power frequency period at place.
Optionally, t is worked as
s> t
mtime, in each moment that the first phase alternating current obtaining this supply terminals place is in this appointment phase angle, be in t
ma rear moment t in moment
m+1, determine T=t
m+1-t
m; Work as t
s< t
mtime, in each moment that the first phase alternating current obtaining this supply terminals place is in this appointment phase angle, be in t
mthe previous moment t in moment
m-1, determine T=t
m-t
m-1.
Because the cycle of the alternating current in supply network in different time sections is also unstable, in order to improve the accuracy of identification, when identifying phase place, need in conjunction with t
sand t
mthe cycle duration of the power frequency period at place calculates, concrete, if t
mbe in t
safterwards, then by t
m+1and t
mbetween the time interval as the cycle duration of this power frequency period, otherwise, if t
mbe in t
sbefore, then by t
m-1and t
mbetween the time interval as the cycle duration of this power frequency period.
Step 309, main control terminal determines the phase place of the alternating current at this electricity consumption point place according to Δ t and T.
Wherein, t is worked as
s> t
mtime, this main control terminal determines the phase place of the alternating current at this electricity consumption point place according to Δ t and T, comprising: if Δ t is in interval (T-t
th, T+t
th) or interval [0, t
th) in, then determine that the phase place of the alternating current at this electricity consumption point place is first phase; t
thfor preset error value, and t
th> 0; If Δ t is in interval (T/3-t
th, T/3+t
th) in, then determine that the phase place of the alternating current at this electricity consumption point place is second phase; If Δ t is in interval (2T/3-t
th, 2T/3+t
th) in, then determine that the phase place of the alternating current at this electricity consumption point place is third phase;
Or, work as t
s< t
mtime, this main control terminal determines the phase place of the alternating current at this electricity consumption point place according to Δ t and T, comprising: if Δ t is in interval (T-t
th, T+t
th) or interval [0, t
th) in, then determine that the phase place of the alternating current at this electricity consumption point place is first phase; t
thfor preset error value, and t
th> 0; If Δ t is in interval (T/3-t
th, T/3+t
th) in, then determine that the phase place of the alternating current at this electricity consumption point place is third phase; If Δ t is in interval (2T/3-t
th, 2T/3+t
th) in, then determine that the phase place of the alternating current at this electricity consumption point place is second phase.
Wherein, t
thfor the error that system allows, this error can by develop or maintainer is arranged voluntarily according to actual conditions, optionally, and this t
th1/12nd average period can be set to.Such as, when taking ac frequency as 50Hz, average period is 20ms is example, t
th1.2ms can be set to.
Known in the moment that a certain phase place arrives appointment phase angle from assigned direction, and phase angle difference between other two phase places and this phase place also known when, if can know, a unknown phase is in same power frequency period, the moment of phase inphase angle is arrived from equidirectional, just accurately can judge which phase place is this unknown phase be, such as, for Fig. 3 B, when the phase angle of phase place A rises at 0, ideally, the phase angle of phase place B will rise to 0 after T/3, and the phase angle of phase place C will rise to 0 after 2T/3.Composition graphs 3B, considers error condition, if first phase is phase place A, then t detected
sand t
mbetween the error range of absolute difference before and after 0 or T in, then can determine that this unknown phase is phase place A; If t
sand t
mbetween the error range of absolute difference before and after T/3 in, then can determine that this unknown phase is phase place B; If t
sand t
mbetween the error range of absolute difference before and after 2T/3 in, then can determine that this unknown phase is phase place C.
Such as, composition graphs 3B, be 0 ° (alternating current phase angle reaches the moment of 0 ° also referred to as zero-acrross ing moment) with this appointment phase angle, it be 0 moment is example that the phase place of phase place A arrives the moment of specifying phase angle, and the relation corresponding with each phase place of the mistiming between reference point phase angle is as shown in the table:
With the alternating current average frequency of feed circuit for 50Hz, all zero-acrross ing moment obtain as example by negative edge, main control terminal controls the whole network and starts to start phase identification, and main control terminal at the alternating current of phase identification stage Coutinuous store own phase A at the zero-acrross ing moment of negative edge, all zero-acrross ing moment from self n of terminal record power frequency period receiving recognition instruction, report main control terminal after being filled with.Main control terminal is received after the data of terminal to report, with the comparing that self stores, first finds and the time data being in same power frequency period from the terminal to report moment, then goes out this phase place from terminal according to the mathematic interpolation of time.Please refer to Fig. 3 C, it illustrates a kind of process flow diagram identifying phase place, this idiographic flow is as follows:
Step 31, from terminal to report zero-acrross ing moment t
s;
Step 32, main control terminal judges t
swhether t is less than with the mistiming of main control terminal current time
c(60s), if so, then enter step 33, otherwise return step 31;
Step 33, main control terminal is found out and t in the time data stored
sthe moment t of same period
m, and t
mbe in t
sbefore, i.e. 0≤t
s-t
m≤ 30ms, utilizes Δ t to represent t
mwith t
smistiming;
Step 34, main control terminal calculates t
mwith t
sthe time span T of place power frequency period;
Step 35, main control terminal calculates t
mwith t
smistiming Δ t;
Step 36, main control terminal, by comparison, draws the phase place of website to be measured.Wherein, Δ t belongs to (T-t
th, T+t
th) or (-t
th, t
th) time, be phase place A from the phase place of the alternating current of end side; Δ t belongs to (T/3-t
th, T/3+t
th) time, be phase place B from the phase place of the alternating current of end side; Δ t belongs to (2T/3-t
th, 2T/3+t
th) time, be phase place C from the phase place of the alternating current of end side.
Optionally, above-mentioned flow process also can utilize handheld device to realize, and main control terminal is connected to the phase place A of switchgear building, will be connected to electricity consumption point from terminal, sets up after communication both can initiate phase identification by main control end until both.
Pass through the solution of the present invention, without the need to manually carrying out point-to-point test phase in power wire broadband carrier communication system, utilizing main control terminal can carry out phase identification to users all in supply network at any time, can human cost be saved, raise the efficiency, eliminate safe hidden trouble.Utilize the moment of a certain stationary phase of same power frequency period as reference amount, meet the condition of 47Hz-53Hz at power frequency period under, the phase place of electricity consumption point can be judged accurately, there is not erroneous judgement situation, as long as be in from the moment of terminal to report arbitrarily in the time period of main control terminal storage, the phase place of corresponding electricity consumption point accurately can be identified.
In sum, phase recognition methods in supply network shown in the embodiment of the present invention, arrived each moment of specifying phase angle by the first phase alternating current at main control terminal record supply terminals place from assigned direction, receive that send from terminal, this appointment phase angle should be arrived from the alternating current of electricity consumption point corresponding to terminal from this assigned direction moment t
s, arrive each moment and the t of this appointment phase angle from this assigned direction according to the first phase alternating current at this supply terminals place
s, determining the phase place of the alternating current at this electricity consumption point place, without the need to manually carrying out point-to-point test phase, utilizing main control terminal can carry out phase identification to users all in supply network at any time, thus save human cost, raise the efficiency, eliminate safe hidden trouble; Further, utilize the moment of a certain stationary phase of same power frequency period as with reference to amount, as long as be in from the moment of terminal to report arbitrarily in the time period of main control terminal storage, accurately can identify the phase place of corresponding electricity consumption point, identify that accuracy is high.
Please refer to Fig. 4, it illustrates the block diagram of the phase identification device in the supply network that one embodiment of the invention provides.The mode that this device can be combined by hardware or soft or hard is embodied as the some or all of of the main control terminal 110 of implementation environment shown in Fig. 1, in order to perform as all or part of step in Fig. 3 performed by main control terminal.This device can comprise: record cell 401, receiving element 402 and determining unit 403;
Described record cell 401, first phase alternating current for recording supply terminals place arrives each moment of specifying phase angle from assigned direction, described assigned direction is for rising or declining, and the phase angle of the alternating current in described supply network is in (-180 °, 180 °) interval;
Described receiving element 402, for receive send from terminal, the alternating current of the described electricity consumption corresponding from terminal point to arrive the moment t of described appointment phase angle from described assigned direction
s;
Described determining unit 403, for arriving each moment and the t of described appointment phase angle from described assigned direction according to the first phase alternating current at described supply terminals place
s, determine the phase place of the alternating current at described electricity consumption point place.
Optionally, described determining unit 403, arrives each moment of described appointment phase angle from described assigned direction for the first phase alternating current at described supply terminals place, determines and t
sbe in the moment t in same power frequency period
m, calculate t
swith t
mbetween absolute difference Δ t, determine t
sand t
mthe cycle duration T of the power frequency period at place, determines the phase place of the alternating current at described electricity consumption point place according to Δ t and T.
Optionally, the alternating current at described supply terminals place is three-phase alternating current, and described determining unit 403 is determining the phase place of alternating current at described electricity consumption point place according to Δ t and T, and t
s> t
mtime, specifically for,
If Δ t is in interval (T-t
th, T+t
th) or interval [0, t
th) in, then determine that the phase place of the alternating current at described electricity consumption point place is first phase; t
thfor preset error value, and t
th> 0;
If Δ t is in interval (T/3-t
th, T/3+t
th) in, then determine that the phase place of the alternating current at described electricity consumption point place is second phase;
If Δ t is in interval (2T/3-t
th, 2T/3+t
th) in, then determine that the phase place of the alternating current at described electricity consumption point place is third phase;
Phase angle difference between described second phase and described first phase is 120 °, and the phase angle difference between described third phase and described first phase is 240 °.
Optionally, the alternating current at described supply terminals place is three-phase alternating current, and described determining unit 403 determines the phase place of the alternating current at described electricity consumption point place according to Δ t and T, and t
s> t
mtime, specifically for,
If Δ t is in interval (T-t
th, T+t
th) or interval [0, t
th) in, then determine that the phase place of the alternating current at described electricity consumption point place is first phase; t
thfor preset error value, and t
th> 0;
If Δ t is in interval (T/3-t
th, T/3+t
th) in, then determine that the phase place of the alternating current at described electricity consumption point place is third phase;
If Δ t is in interval (2T/3-t
th, 2T/3+t
th) in, then determine that the phase place of the alternating current at described electricity consumption point place is second phase;
Phase differential between described second phase and described first phase is 120 °, and the phase differential between described third phase and described first phase is 240 °.
Optionally, described determining unit 403 is determining t
sand t
mduring the cycle duration T of the power frequency period at place, specifically for,
Work as t
s> t
mtime, the first phase alternating current obtaining described supply terminals place arrives each moment of described appointment phase angle from described assigned direction, t
ma rear moment t in moment
m+1, determine T=t
m+1-t
m;
Work as t
s< t
mtime, the first phase alternating current obtaining described supply terminals place arrives each moment of described appointment phase angle from described assigned direction, t
mthe previous moment t in moment
m-1, determine T=t
m-t
m-1.
Optionally, described appointment phase angle is 0 °.
In sum, phase identification device in supply network shown in the embodiment of the present invention, arrived each moment of specifying phase angle by the first phase alternating current at main control terminal record supply terminals place from assigned direction, receive that send from terminal, this appointment phase angle should be arrived from the alternating current of electricity consumption point corresponding to terminal from this assigned direction moment t
s, arrive each moment and the t of this appointment phase angle from this assigned direction according to the first phase alternating current at this supply terminals place
s, determining the phase place of the alternating current at this electricity consumption point place, without the need to manually carrying out point-to-point test phase, utilizing main control terminal can carry out phase identification to users all in supply network at any time, thus save human cost, raise the efficiency, eliminate safe hidden trouble; Further, utilize the moment of a certain stationary phase of same power frequency period as with reference to amount, as long as be in from the moment of terminal to report arbitrarily in the time period of main control terminal storage, accurately can identify the phase place of corresponding electricity consumption point, identify that accuracy is high.
Please refer to Fig. 5, it illustrates the block diagram of the phase identification device in the supply network that one embodiment of the invention provides.The mode that this device can be combined by hardware or soft or hard is embodied as some or all of from terminal 120 of implementation environment shown in Fig. 1, in order to perform as in Fig. 3 by all or part of step performed by terminal.This device can comprise: record cell 501 and transmitting element 502;
Described record cell, the alternating current for electricity consumption point place arrives the moment t specifying phase angle from assigned direction
s, described assigned direction is for rising or declining, and the phase angle of the alternating current in described supply network is in (-180 °, 180 °) interval;
Described transmitting element, for arriving the alternating current at described electricity consumption point place in the moment t of described appointment phase angle from described assigned direction
ssend to main control terminal, be in each moment and the t of described appointment phase angle by described main control terminal according to the first phase alternating current of described supply terminals
s, determine the phase place of the alternating current at described electricity consumption point place.
In sum, phase identification device in supply network shown in the embodiment of the present invention, arrive each moment of specifying phase angle from assigned direction by the first phase alternating current at main control terminal record supply terminals place, from terminal, the alternating current of the electricity consumption of correspondence point is arrived the moment t of this appointment phase angle from this assigned direction
ssend to main control terminal, arrived each moment and the t of this appointment phase angle by main control terminal according to the first phase alternating current of this supply terminals from this assigned direction
s, determining the phase place of the alternating current at this electricity consumption point place, without the need to manually carrying out point-to-point test phase, utilizing main control terminal can carry out phase identification to users all in supply network at any time, thus save human cost, raise the efficiency, eliminate safe hidden trouble; Further, utilize the moment of a certain stationary phase of same power frequency period as with reference to amount, as long as be in from the moment of terminal to report arbitrarily in the time period of main control terminal storage, accurately can identify the phase place of corresponding electricity consumption point, identify that accuracy is high.
It should be noted that: the phase recognition methods in the supply network that above-described embodiment provides, when identifying the phase place of electricity consumption point, only be illustrated with the division of above-mentioned each functional unit, in practical application, can distribute as required and by above-mentioned functions and be completed by different functional units, inner structure by terminal is divided into different functional units, to complete all or part of function described above.In addition, the phase identification device in the supply network that above-described embodiment provides and the phase recognition methods embodiment in supply network belong to same design, and its specific implementation process refers to embodiment of the method, repeats no more here.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be ROM (read-only memory), disk or CD etc.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (14)
1. the phase identification device in supply network, is characterized in that, in main control terminal, described device comprises:
Record cell, first phase alternating current for recording supply terminals place arrives each moment of specifying phase angle from assigned direction, described assigned direction is for rising or declining, and the phase angle of the alternating current in described supply network is in (-180 °, 180 °) interval;
Receiving element, for receive send from terminal, the alternating current of the described electricity consumption corresponding from terminal point to arrive the moment t of described appointment phase angle from described assigned direction
s;
Determining unit, for arriving each moment and the t of described appointment phase angle from described assigned direction according to the first phase alternating current at described supply terminals place
s, determine the phase place of the alternating current at described electricity consumption point place.
2. device according to claim 1, is characterized in that,
Described determining unit, arrives each moment of described appointment phase angle from described assigned direction for the first phase alternating current at described supply terminals place, determines and t
sbe in the moment t in same power frequency period
m, calculate t
swith t
mbetween absolute difference Δ t, determine t
sand t
mthe cycle duration T of the power frequency period at place, determines the phase place of the alternating current at described electricity consumption point place according to Δ t and T.
3. device according to claim 2, is characterized in that, the alternating current at described supply terminals place is three-phase alternating current, and described determining unit is determining the phase place of alternating current at described electricity consumption point place according to Δ t and T, and t
s> t
mtime, specifically for,
If Δ t is in interval (T-t
th, T+t
th) or interval [0, t
th) in, then determine that the phase place of the alternating current at described electricity consumption point place is first phase; t
thfor preset error value, and t
th> 0;
If Δ t is in interval (T/3-t
th, T/3+t
th) in, then determine that the phase place of the alternating current at described electricity consumption point place is second phase;
If Δ t is in interval (2T/3-t
th, 2T/3+t
th) in, then determine that the phase place of the alternating current at described electricity consumption point place is third phase;
Phase angle difference between described second phase and described first phase is 120 °, and the phase angle difference between described third phase and described first phase is 240 °.
4. device according to claim 2, is characterized in that, the alternating current at described supply terminals place is three-phase alternating current, and described determining unit is determining the phase place of alternating current at described electricity consumption point place according to Δ t and T, and t
s> t
mtime, specifically for,
If Δ t is in interval (T-t
th, T+t
th) or interval [0, t
th) in, then determine that the phase place of the alternating current at described electricity consumption point place is first phase; t
thfor preset error value, and t
th> 0;
If Δ t is in interval (T/3-t
th, T/3+t
th) in, then determine that the phase place of the alternating current at described electricity consumption point place is third phase;
If Δ t is in interval (2T/3-t
th, 2T/3+t
th) in, then determine that the phase place of the alternating current at described electricity consumption point place is second phase;
Phase differential between described second phase and described first phase is 120 °, and the phase differential between described third phase and described first phase is 240 °.
5. device according to claim 2, is characterized in that, described determining unit is determining t
sand t
mduring the cycle duration T of the power frequency period at place, specifically for,
Work as t
s> t
mtime, the first phase alternating current obtaining described supply terminals place arrives each moment of described appointment phase angle from described assigned direction, t
ma rear moment t in moment
m+1, determine T=t
m+1-t
m;
Work as t
s< t
mtime, the first phase alternating current obtaining described supply terminals place arrives each moment of described appointment phase angle from described assigned direction, t
mthe previous moment t in moment
m-1, determine T=t
m-t
m-1.
6., according to the arbitrary described device of claim 1 to 5, it is characterized in that, described appointment phase angle is 0 °.
7. the phase identification device in supply network, is characterized in that, for from terminal, described device comprises:
Record cell, the alternating current for electricity consumption point place arrives the moment t specifying phase angle from assigned direction
s, described assigned direction is for rising or declining, and the phase angle of the alternating current in described supply network is in (-180 °, 180 °) interval;
Transmitting element, for arriving the alternating current at described electricity consumption point place in the moment t of described appointment phase angle from described assigned direction
ssend to main control terminal, be in each moment and the t of described appointment phase angle by described main control terminal according to the first phase alternating current of described supply terminals
s, determine the phase place of the alternating current at described electricity consumption point place.
8. the phase recognition methods in supply network, is characterized in that, described method comprises:
The first phase alternating current at main control terminal record supply terminals place arrives each moment of specifying phase angle from assigned direction, described assigned direction is for rising or declining, and the phase angle of the alternating current in described supply network is in (-180 °, 180 °) interval;
Described main control terminal receives alternating current that send from terminal, the described electricity consumption corresponding from terminal point arrives described appointment phase angle moment t from described assigned direction
s;
Described main control terminal arrives each moment and the t of described appointment phase angle from described assigned direction according to the first phase alternating current at described supply terminals place
s, determine the phase place of the alternating current at described electricity consumption point place.
9. method according to claim 8, is characterized in that, described main control terminal arrives each moment and the t of described appointment phase angle from described assigned direction according to the first phase alternating current at described supply terminals place
s, determine the phase place of the alternating current at described electricity consumption point place, comprising:
The first phase alternating current of described main control terminal at described supply terminals place arrives each moment of described appointment phase angle from described assigned direction, determines and t
sbe in the moment t in same power frequency period
m;
Described main control terminal calculates t
swith t
mbetween absolute difference Δ t;
Described main control terminal determines t
sand t
mthe cycle duration T of the power frequency period at place;
Described main control terminal determines the phase place of the alternating current at described electricity consumption point place according to Δ t and T.
10. method according to claim 9, is characterized in that, the alternating current at described supply terminals place is three-phase alternating current, works as t
s> t
mtime, described main control terminal determines the phase place of the alternating current at described electricity consumption point place according to Δ t and T, comprising:
If Δ t is in interval (T-t
th, T+t
th) or interval [0, t
th) in, then determine that the phase place of the alternating current at described electricity consumption point place is first phase; t
thfor preset error value, and t
th> 0;
If Δ t is in interval (T/3-t
th, T/3+t
th) in, then determine that the phase place of the alternating current at described electricity consumption point place is second phase;
If Δ t is in interval (2T/3-t
th, 2T/3+t
th) in, then determine that the phase place of the alternating current at described electricity consumption point place is third phase;
Phase differential between described second phase and described first phase is 120 °, and the phase differential between described third phase and described first phase is 240 °.
11. methods according to claim 9, is characterized in that, the alternating current at described supply terminals place is three-phase alternating current, works as t
s< t
mtime, described main control terminal determines the phase place of the alternating current at described electricity consumption point place according to Δ t and T, comprising:
If Δ t is in interval (T-t
th, T+t
th) or interval [0, t
th) in, then determine that the phase place of the alternating current at described electricity consumption point place is first phase; t
thfor preset error value, and t
th> 0;
If Δ t is in interval (T/3-t
th, T/3+t
th) in, then determine that the phase place of the alternating current at described electricity consumption point place is third phase;
If Δ t is in interval (2T/3-t
th, 2T/3+t
th) in, then determine that the phase place of the alternating current at described electricity consumption point place is second phase;
Phase differential between described second phase and described first phase is 120 °, and the phase differential between described third phase and described first phase is 240 °.
12. methods according to claim 9, is characterized in that, described main control terminal determines t
sand t
mthe cycle duration T of the power frequency period at place, comprising:
Work as t
s> t
mtime, the first phase alternating current obtaining described supply terminals place arrives each moment of described appointment phase angle from described assigned direction, t
ma rear moment t in moment
m+1, determine T=t
m+1-t
m;
Work as t
s< t
mtime, the first phase alternating current obtaining described supply terminals place arrives each moment of described appointment phase angle from described assigned direction, t
mthe previous moment t in moment
m-1, determine T=t
m-t
m-1.
Method described in 13. according to Claim 8 to 12 are arbitrary, it is characterized in that, described appointment phase angle is 0 °.
Phase recognition methods in 14. 1 kinds of supply networks, is characterized in that, described method comprises:
The moment t specifying phase angle is arrived from the alternating current of terminal record electricity consumption point from assigned direction
s, described assigned direction is for rising or declining, and the phase angle of the alternating current in described supply network is in (-180 °, 180 °) interval;
The described moment t from terminal, the alternating current of described electricity consumption point being arrived described appointment phase angle from described assigned direction
ssend to main control terminal, arrived each moment and the t of described appointment phase angle by described main control terminal according to the first phase alternating current of described supply terminals from described assigned direction
s, determine the phase place of the alternating current at described electricity consumption point place.
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