CN107015073A - A kind of absolute phase sequence measuring system and method - Google Patents
A kind of absolute phase sequence measuring system and method Download PDFInfo
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- CN107015073A CN107015073A CN201611186191.0A CN201611186191A CN107015073A CN 107015073 A CN107015073 A CN 107015073A CN 201611186191 A CN201611186191 A CN 201611186191A CN 107015073 A CN107015073 A CN 107015073A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/18—Indicating phase sequence; Indicating synchronism
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Abstract
The present invention provides a kind of absolute phase sequence measuring system, reference measurement device obtains bus phase voltage data and each phase phase sequence name of bus in transformer station and is referred to as reference data, measuring terminals obtain any circuit phase voltage data in transformer station's supply district, measuring terminals are compared the phase voltage data of acquisition with reference data, with reference to each phase phase sequence title of bus, draw the phase sequence title of each phase of the circuit, the present invention also provides a kind of absolute phase sequence measuring method, because reference data is directly drawn from transformer station's power supply, it is not in the situation of the phase sequence Name Error as benchmark, therefore the phase sequence title measured is accurately and reliably, one reference measurement device can support multiple measuring terminals to carry out absolute phase sequence measurement simultaneously, do not limited by place to be measured and time, the punctual required precision of reference measurement device and measuring terminals is low, reduce cost.
Description
Technical field
The present invention relates to a kind of absolute phase sequence measuring system and method.
Background technology
In, in low-voltage three-phase AC network system, because three-phase line arrangements of conductors, transposition are inconsistent, or due to
Three-phase conducting wire wiring error in equipment, may cause between transformer station and distribution transformer, between different distribution transformers
The phase sequence title that nameplate is identified and its actual voltage-phase are inconsistent, so that cause the confusion in maintenance management, and most probably
Thus equipment or personal injury are produced.Prior art generally checks two different energized conductors using nuclear phase instrument is gone back with phase
It is out-phase, but this mode not can determine that the phase sequence title of each phase of energized conductor, and this mode is generally selected close to power supply
The energized conductor of side is as reference substance, and the phase sequence title of this energized conductor may have occurred and that mistake, it is therefore desirable to find more
The measurement of phase sequence and phase sequence title is carried out for reliable reference substance.
The content of the invention
The purpose of the present invention is in view of the shortcomings of the prior art, to propose a kind of absolute phase sequence measuring system and method, to become
In power station on the basis of bus wire phase sequence, come the phase sequence title of any circuit for determining to belong to transformer station's supply district, method is simple
Effectively, measurement result is accurately and reliably.
The present invention is achieved through the following technical solutions：
A kind of absolute phase sequence measuring system, including for obtaining substation bus bar phase voltage data and each phase phase sequence of bus
The reference measurement device of title, the measuring terminals for obtaining transformer station's supply district inner branch line phase voltage data and benchmark are surveyed
Amount device communicates to connect the server for storing bus phase voltage data and each phase phase sequence title of bus, and measuring terminals pass through
Wireless communication networks are connected with server, for obtaining bus phase voltage data and each phase phase sequence title of bus, and root from server
The phase sequence title of each phase of branch line is determined according to branch line phase voltage data, bus phase voltage data and each phase phase sequence title of bus.
The present invention can be also achieved through the following technical solutions：
A kind of absolute phase sequence measuring system, including for obtaining substation bus bar phase voltage data and each phase phase sequence of bus
The reference measurement device of title, the measuring terminals for obtaining transformer station's supply district inner branch line phase voltage data and benchmark are surveyed
Amount device communicates to connect the server for storing bus phase voltage data and each phase phase sequence title of bus, and measuring terminals pass through
Wireless communication networks are connected with server, for obtaining bus phase voltage data and each phase phase sequence title of bus, and root from server
The phase sequence title of each phase of branch line, base are determined according to branch line phase voltage data, bus phase voltage data and each phase phase sequence title of bus
Locating tab assembly device includes being connected with the first voltage acquisition module for gathering bus phase voltage, with first voltage acquisition module
The first single-chip microcomputer, the first gps clock module and communication module that are connected respectively with the first single-chip microcomputer, the first gps clock module
1PPS pulse signals, which are sent, in each specific UTC time point to first voltage acquisition module is used as trigger signal, first
Voltage acquisition module is according to start trigger signal, the phase voltage cycle waveform of the multiple buses of continuous acquisition, the first single-chip microcomputer according to
The phase voltage cycle waveshape of collection goes out virtual value, frequency and the phase angle of each phase voltage of bus, and by each voltage acquisition
Moment and result of calculation are uploaded onto the server as bus phase voltage data by communication module.
Further, the measuring terminals include be used for gather the branch line phase voltage second voltage acquisition module, with
The second singlechip of second voltage acquisition module connection, the 2nd GPS clock modules that be connecteds respectively with second singlechip and wirelessly
Communication module, the second gps clock module sends 1PPS pulses in some specific UTC time point to second voltage acquisition module
Signal is as trigger signal, and second voltage acquisition module is according to start trigger signal, the phase electricity of the multiple branch lines of continuous acquisition
Cycle waveform is pressed, second singlechip goes out the virtual value of each phase voltage of branch line, frequency according to the phase voltage cycle waveshape of collection
And phase angle, voltage acquisition moment and result of calculation are stored in locally as branch line phase voltage data, and pass through radio communication
Module downloads from a server the bus phase voltage data at identical voltage acquisition moment, respectively verify bus phase voltage data and
Voltage effective value, frequency and phase angle in branch line phase voltage data, to determine the phase sequence title of each phase of branch line.
Further, the first voltage acquisition module includes three voltage acquisition sensing elements and corresponding collection electricity
Road, the collection of the bus three-phase voltage can be carried out simultaneously；The second voltage acquisition module includes three voltage acquisition sensings
Element and corresponding Acquisition Circuit, the collection of the branch line three-phase voltage can be carried out simultaneously.
Further, the specific UTC time point is UTC time integer second or UTC time integer minute.
Further, the first gps clock module includes the first GPS module and be connected with the first GPS module first
Crystal oscillator clock, the first crystal oscillator clock precision≤± 5ppm.
Further, the second gps clock module includes the second GPS module and be connected with the second GPS module second
Crystal oscillator clock, the second crystal oscillator clock precision≤± 5ppm.
Further, each phase phase sequence title of the bus is according to the phase of each phase of phase sequence or bus of transformer station's main equipment
Color Sign Board is obtained, and transformer station's main equipment includes transformer or transformer.
The present invention can be also achieved through the following technical solutions：
A kind of absolute phase sequence measuring method, comprises the following steps：
A, the phase sequence name for determining according to the phase color Sign Board of each phase of phase sequence or bus of transformer station's main equipment each phase of bus
Claim；
When B, each specific UTC time point arrive, the first multiple phase voltage cycle ripples of acquisition module continuous acquisition bus
Shape, when some specific UTC time point arrives, the second multiple phase voltage cycle waveforms of acquisition module continuous acquisition branch line；
C, the bus phase voltage cycle waveform according to collection, calculate virtual value, frequency fs and the phase of each phase voltage of bus
Angle, and by result of calculation, corresponding voltage acquisition moment Ts, with reference to the phase sequence title of each phase of bus, composition one-dimension array Ps
[8]={ Ts, fs, Usa, Φ sa, Usb, Φ sb, Usc, Φ sc } uploads onto the server as reference data, wherein, Ts is electricity
Pressure collection moment, fs is busbar voltage frequency, and Usa is bus A phase voltage virtual values, and Φ sa are bus A phases phase angle, and Usb is
Bus B phase voltage virtual values, Φ sb are bus B phases phase angle；Usc is bus C phase voltage virtual values, and Φ sc are bus C phase phases
Parallactic angle；
D, server are stored the n one-dimension array received by the reception time successively, and formation array Ps [n] [8]=
{ Tsn, fsn, Usan, Φ san, Usbn, Φ sbn, Uscn, Φ scn }, wherein, Tsn is n-th of voltage acquisition moment, and fsn is
N-th of voltage acquisition moment corresponding busbar voltage frequency, Usan is n-th of voltage acquisition moment corresponding bus A phase voltages
Virtual value, Φ san are n-th of voltage acquisition moment corresponding bus A phases phase angle, and Usbn is n-th of voltage acquisition moment pair
The bus B phase voltage virtual values answered, Φ sbn are n-th of voltage acquisition moment corresponding bus B phases phase angle；Uscn is n-th
Individual voltage acquisition moment corresponding bus C phase voltage virtual values, Φ scn are n-th of voltage acquisition moment corresponding bus C phases
Phase angle；
E, the branch line phase voltage cycle waveform according to collection, calculate virtual value, frequency ft and the phase of each phase voltage of branch line
Angle, and by checkout result and corresponding voltage acquisition moment Tt constitute one-dimension array Pt [8]=Tt, ft, Ut1, Φ t1, Ut2,
Φ t2, Ut3, Φ t3 } it is stored in locally as measurement data, wherein, Tt is the voltage acquisition moment, and ft is branch line electric voltage frequency,
Us1 is branch line the first phase voltage virtual value, Φs1For the first phase of branch line phase angle, Us2For branch line the second phase voltage virtual value,
Φs2For the second phase of branch line phase angle；Us3For branch line third phase voltage effective value, Φs3For branch line third phase phase angle；
F, from server obtain voltage acquisition moment identical (i.e. Tt=Tsm) when corresponding reference data, and will measure
Data are compared with reference data, are specially：
F1, when the difference at A, B, C three-phase voltage phase angle in reference data is in the range of 120 ° of ± ε, show bus mutually electricity
Pressure collection is normal, into step F2, wherein, ε is that phase voltage phase difference caused by three-phase alternating voltage neutral point excursion is allowed partially
From value, span is ε≤15 °；
F2, judge whether ft=fsm sets up, if so, showing that branch line belongs to same AC synchronous power network with bus, enter
Step F3；
F3, judge whether ΔΦ=arccos [cos (Φ ti- Φ sjm+ θ)]≤δ sets up, if so, determining corresponding to Φ ti
Branch line 3 phase sequence title it is identical with the phase sequence title of the bus 1 corresponding to now Φ sjm, and by the phase sequence title of determination
Output, otherwise, the asynchronous information of output phase sequence, wherein, m=1,2 ..., n, i=1,2,3, j=a, b, c, θ is busbar voltage
Phase difference compensation value caused by the wiring group difference of voltage conversion apparatus between collection point and branch line collection point, δ value
By itself error of reference measurement device and measuring terminals, the error of voltage conversion device, busbar voltage collection point and branch line electricity
Line length between pressure collection point is together decided on.
Further, the specific UTC time point is UTC time integer second or UTC time integer minute.
The present invention has the advantages that：
1st, reference measurement device obtains bus phase voltage data and each phase phase sequence name of bus in transformer station and is referred to as base value
Any circuit phase voltage data in transformer station's supply district are obtained according to, measuring terminals, and measuring terminals are by the phase voltage data of acquisition
Compared with reference data, with reference to each phase phase sequence title of bus, draw in the phase sequence title of each phase of the circuit, transformer station bus by
In directly being drawn from transformer station's power supply, bus is not in mutually respectively the situation of phase sequence Name Error, therefore the branch line phase sequence measured
Title is accurately and reliably.
2nd, reference measurement device can gather the phase voltage waveform of bus in each specific UTC time point, and according to many
The phase voltage waveform of secondary collection calculates multigroup bus phase voltage data, in uploading onto the server, and measuring terminals are special at some
Fixed UTC time point gathers the phase voltage waveform of circuit, calculates after circuit phase voltage data, and downloads from server phase
The bus phase voltage data answered are compared, therefore a reference measurement device can support multiple measuring terminals to carry out simultaneously
Absolute phase sequence measurement, is not limited by place to be measured and time.
3rd, reference measurement device and measuring terminals are uploaded and downloading data using non-realtime traffic mode, it is not necessary to used
The transmitted data on network of high reliability, high-speed, and phase sequence measurement accuracy do not prolonged by communication network bandwidth, data transfer
When etc. factor influence, reduce networking development cost and communications cost.
4th, the punctual required precision of reference measurement device and measuring terminals is low, using precision≤± 5ppm crystal oscillator clock
Use requirement can be met, therefore greatly reduces cost.
5th, method of the invention by compare the voltage effective value in bus phase voltage data and circuit phase voltage data,
Frequency, phase angle can obtain a result, and method is easy and effective.
Brief description of the drawings
The present invention is described in further details below in conjunction with the accompanying drawings.
Fig. 1 is system structure diagram of the invention.
Embodiment
In region in power distribution network outside transformer station, according to the voltage data of each phase of substation bus bar and the phase sequence of each phase
On the basis of title, to determine the phase sequence title of each phase of any branch line, the phase sequence title of each phase of branch line drawn by this way is i.e.
For the absolute phase sequence of each phase of branch line, as shown in figure 1, definitely phase sequence measuring system includes being used to obtain the phase voltage of substation bus bar 1
The reference measurement device 2 of data and each phase phase sequence title of bus 1, for obtaining the phase voltage number of transformer station's supply district inner branch line 3
According to measuring terminals 4, communicate to connect for storing the phase voltage data of bus 1 and each phase phase sequence of bus 1 with reference measurement device 2
The phase sequence title of each phase of bus 1 is obtained according to the phase color Sign Board of each phase of bus 1 in the server 5 of title, transformer station, benchmark
Measurement apparatus 2 is including being used to gather the first voltage acquisition module 21 of the phase voltage of bus 1, connecting with first voltage acquisition module 21
The first single-chip microcomputer 22 connect, the first gps clock module 23 and communication module 24 that are connected respectively with the first single-chip microcomputer, measurement is eventually
End 4 includes being used for the second voltage acquisition module 41 for gathering the phase voltage of branch line 3, be connected with second voltage acquisition module 41 the
Two single-chip microcomputers 42, the second gps clock module 43 being connected respectively with second singlechip 42 and wireless communication module 44, the first electricity
Acquisition module 21 is pressed to include three voltage acquisition sensing elements and corresponding Acquisition Circuit, three voltage acquisition sensing elements point
Phase line A, B, C and zero line N not with the low-pressure side of substation transformer 11 is permanently connected, can synchronously carry out A phases, the B phases of bus 1
With the collection of C phase voltages, the high-pressure side of substation transformer 11 is connected with bus 1, and second voltage acquisition module 41 includes three electricity
Pressure collection sensing element and corresponding Acquisition Circuit, three voltage acquisition sensing elements respectively with the low pressure of electricity consumption side transformer 31
Phase line A, B, the C and zero line N on side line road are connected temporarily, and the first phase, the second phase and third phase voltage of branch line 3 can be carried out simultaneously
Collection, the high-pressure side of electricity consumption side transformer 31 is connected with branch line 1, the first gps clock module 23 include the first GPS module and with
First crystal oscillator clock of the first GPS module connection, the first crystal oscillator clock precision is ± 5ppm, and the second gps clock module 43 is wrapped
The second GPS module and the second crystal oscillator clock being connected with the second GPS module are included, the second crystal oscillator clock precision is ± 5ppm, measurement
Terminal 4 can be connected with any branch line 3 in transformer station supply district, and different branch lines 3 can be connected from different measuring terminals 4.
Absolute phase sequence measuring method comprises the following steps：
A, the phase sequence title for determining according to the phase color Sign Board of the three-phase phase line of bus 1 the three-phase phase line of bus 1；
B, the first gps clock module 23 receive the UTC time signal from gps satellite 6, in each UTC time integer second
During arrival, the first gps clock module 23 sends 1PPS pulse signals as trigger signal to first voltage acquisition module 21,
First voltage acquisition module 21 is according to start trigger signal, the phase voltage cycle waveform of 5 buses 1 of continuous acquisition, bus 1
A, B, C three-phase phase voltage are gathered simultaneously, and collection duration is about 0.1s, and gathered data is transmitted to the first single-chip microcomputer 22, second
Gps clock module 43 receives the UTC time signals from gps satellite 6, when some UTC time integer second arrives, when second
Clock module 33 sends 1PPS pulse signals to second voltage acquisition module 41 and is used as trigger signal, second voltage acquisition module 41
According to start trigger signal, the phase voltage cycle waveform of 5 branch lines 3 of continuous acquisition, A, B, C three-phase phase voltage of branch line 3 are simultaneously
Collection, collection duration is about 0.1s, and gathered data is transmitted to second singlechip 42；
C, the first single-chip microcomputer 22 calculate each phase voltage of bus 1 according to the three-phase phase voltage cycle waveform of bus 1 received
Virtual value, frequency fs and phase angle, and by result of calculation, corresponding voltage acquisition moment Ts, with reference to the three-phase phase line of bus 1
Phase sequence title, composition one-dimension array Ps [8]={ Ts, fs, Usa, Φ sa, Usb, Φ sb, Usc, Φ sc } be used as reference data
Upload onto the server 5, wherein, Ts is the voltage acquisition moment, and fs is busbar voltage frequency, and Usa is bus A phase voltage virtual values,
Φ sa are bus A phases phase angle, and Usb is bus B phase voltage virtual values, and Φ sb are bus B phases phase angle；Usc is bus C phases
Voltage effective value, Φ sc are bus C phases phase angle；
D, server 5 are stored the n one-dimension array received by the reception time successively, and formation array Ps [n] [8]=
{ Tsn, fsn, Usan, Φ san, Usbn, Φ sbn, Uscn, Φ scn }, wherein, Tsn is n-th of voltage acquisition moment, and fsn is
N-th of voltage acquisition moment corresponding busbar voltage frequency, Usan is n-th of voltage acquisition moment corresponding bus A phase voltages
Virtual value, Φ san are n-th of voltage acquisition moment corresponding bus A phases phase angle, and Usbn is n-th of voltage acquisition moment pair
The bus B phase voltage virtual values answered, Φ sbn are n-th of voltage acquisition moment corresponding bus B phases phase angle；Uscn is n-th
Individual voltage acquisition moment corresponding bus C phase voltage virtual values, Φ scn are n-th of voltage acquisition moment corresponding bus C phases
Phase angle；
E, second singlechip 42 calculate each phase voltage of branch line 3 according to the three-phase phase voltage cycle waveform of branch line 3 received
Virtual value, frequency ft and phase angle, and checkout result and corresponding voltage acquisition moment Tt are constituted into one-dimension array Pt [8]
={ Tt, ft, Ut1, Φ t1, Ut2, Φ t2, Ut3, Φ t3 } is stored in locally as measurement data, wherein, Tt is voltage acquisition
Moment, ft is branch line electric voltage frequency, and Us1 is branch line the first phase voltage virtual value, and Φ s1 are the first phase of branch line phase angle, and Us2 is
Branch line the second phase voltage virtual value, Φ s2 are the second phase of branch line phase angle；Us3 is branch line third phase voltage effective value, and Φ s3 are
Branch line third phase phase angle；
Corresponding benchmark when F, second singlechip 42 obtain voltage acquisition moment identical (i.e. Tt=Tsm) from server 5
Data, and measurement data is compared with reference data, it is specially：
F1, when the difference at A, B, C three-phase voltage phase angle in reference data is in the range of 120 ° of ± ε, show the phase of bus 1
Voltage acquisition is normal, into step F2, wherein, ε is that phase voltage phase difference caused by three-phase alternating voltage neutral point excursion is allowed
Deviation value, value is ε=5 °；
F2, judge whether ft=fsm sets up, if so, showing that branch line 3 belongs to same AC synchronous power network with bus 1, enter
Enter step F3；
F3, judge whether ΔΦ=arccos [cos (Φ ti- Φ sjm+ θ)]≤δ sets up, if so, determining corresponding to Φ ti
Branch line 3 phase sequence title it is identical with the phase sequence title of the bus 1 corresponding to now Φ sjm, and by the phase sequence title of determination
Output, otherwise, the asynchronous information of output phase sequence, wherein, m=1,2 ..., n, i=1,2,3, j=a, b, c, θ is the voltage of bus 1
Phase caused by the wiring group difference of voltage conversion apparatus (such as transformer, transformer) between collection point and the collection point of branch line 3
Displacement error compensation value, δ value by reference measurement device 2 and measuring terminals 3 error itself, the error of voltage conversion device, mother
Line length between the voltage acquisition point of line 1 and the voltage acquisition point of branch line 3 is together decided on.
The foregoing is only a preferred embodiment of the present invention, therefore the scope that the present invention is implemented can not be limited with this,
The equivalent changes and modifications made according to scope of the present invention patent and description, all should still belong to patent of the present invention and contain
In the range of lid.
Claims (10)
1. a kind of absolute phase sequence measuring system, it is characterised in that：Including for obtaining substation bus bar phase voltage data and bus
The reference measurement device of each phase phase sequence title, the measuring terminals for obtaining transformer station's supply district inner branch line phase voltage data,
The server for storing bus phase voltage data and each phase phase sequence title of bus is communicated to connect with reference measurement device, measurement is eventually
End is connected by wireless communication networks with server, for obtaining bus phase voltage data and each phase phase sequence name of bus from server
Claim, and the phase sequence of each phase of branch line is determined according to branch line phase voltage data, bus phase voltage data and each phase phase sequence title of bus
Title.
2. a kind of absolute phase sequence measuring system, it is characterised in that：Including for obtaining substation bus bar phase voltage data and bus
The reference measurement device of each phase phase sequence title, the measuring terminals for obtaining transformer station's supply district inner branch line phase voltage data,
The server for storing bus phase voltage data and each phase phase sequence title of bus is communicated to connect with reference measurement device, measurement is eventually
End is connected by wireless communication networks with server, for obtaining bus phase voltage data and each phase phase sequence name of bus from server
Claim, and the phase sequence of each phase of branch line is determined according to branch line phase voltage data, bus phase voltage data and each phase phase sequence title of bus
Title, reference measurement device includes gathering mould with the first voltage acquisition module for gathering bus phase voltage, with first voltage
First single-chip microcomputer of block connection, the first gps clock module and communication module being connected respectively with the first single-chip microcomputer, during a GPS
Clock module sends 1PPS pulse signals as trigger signal in each specific UTC time point to first voltage acquisition module,
First voltage acquisition module is according to start trigger signal, the phase voltage cycle waveform of the multiple buses of continuous acquisition, the first single-chip microcomputer
Virtual value, frequency and the phase angle of each phase voltage of bus are gone out according to the phase voltage cycle waveshape of collection, and by each voltage
Moment and result of calculation are gathered as bus phase voltage data, is uploaded onto the server by communication module.
3. a kind of absolute phase sequence measuring system according to claim 2, it is characterised in that：The measuring terminals include being used for
The second voltage acquisition module for gathering the branch line phase voltage, the second singlechip being connected with second voltage acquisition module, difference
The the second gps clock module and wireless communication module being connected with second singlechip, the second gps clock module are specific at some
UTC time point sends 1PPS pulse signals as trigger signal to second voltage acquisition module, second voltage acquisition module according to
Start trigger signal, the phase voltage cycle waveform of the multiple branch lines of continuous acquisition, second singlechip is according to the phase voltage of collection
Cycle waveshape goes out virtual value, frequency and the phase angle of each phase voltage of branch line, using voltage acquisition moment and result of calculation as
Branch line phase voltage data are stored in locally, and download from a server by wireless communication module the mother at identical voltage acquisition moment
Line phase voltage data, verify voltage effective value, frequency and the phase in bus phase voltage data and branch line phase voltage data respectively
Angle, to determine the phase sequence title of each phase of branch line.
4. a kind of absolute phase sequence measuring system according to claim 3, it is characterised in that：The first voltage acquisition module
Including three voltage acquisition sensing elements and corresponding Acquisition Circuit, the collection of the bus three-phase voltage can be carried out simultaneously；Institute
Stating second voltage acquisition module includes three voltage acquisition sensing elements and corresponding Acquisition Circuit, and the branch line can be carried out simultaneously
The collection of three-phase voltage.
5. a kind of absolute phase sequence measuring system according to Claims 2 or 3 or 4, it is characterised in that：The specific UTC
Time point is UTC time integer second or UTC time integer point.
6. a kind of absolute phase sequence measuring system according to Claims 2 or 3 or 4, it is characterised in that：During one GPS
Clock module includes the first GPS module and the first crystal oscillator clock for being connected with the first GPS module, and the first crystal oscillator clock precision≤±
5ppm。
7. a kind of absolute phase sequence measuring system according to claim 3 or 4, it is characterised in that：The second gps clock mould
Block includes the second GPS module and the second crystal oscillator clock being connected with the second GPS module, the second crystal oscillator clock precision≤± 5ppm.
8. a kind of absolute phase sequence measuring system according to claim 1 or 2 or 3 or 4, it is characterised in that：The bus is each
Phase phase sequence title is obtained according to the phase color Sign Board of each phase of phase sequence or bus of transformer station's main equipment, and transformer station's main equipment includes
Transformer or transformer.
9. a kind of absolute phase sequence measuring method, it is characterised in that：Comprise the following steps：
A, the phase sequence title for determining according to the phase color Sign Board of each phase of phase sequence or bus of transformer station's main equipment each phase of bus；
When B, each specific UTC time point arrive, the first multiple phase voltage cycle waveforms of acquisition module continuous acquisition bus, certain
When individual specific UTC time point arrives, the second multiple phase voltage cycle waveforms of acquisition module continuous acquisition branch line；
C, the bus phase voltage cycle waveform according to collection, calculate virtual value, frequency fs and the phase angle of each phase voltage of bus, and
By result of calculation, corresponding voltage acquisition moment Ts, with reference to the phase sequence title of each phase of bus, composition one-dimension array Ps [8]=
{ Ts, fs, Usa, Φ sa, Usb, Φ sb, Usc, Φ sc } uploads onto the server as reference data, wherein, Ts is voltage acquisition
Moment, fs is busbar voltage frequency, and Usa is bus A phase voltage virtual values, and Φ sa are bus A phases phase angle, and Usb is bus B phases
Voltage effective value, Φ sb are bus B phases phase angle；Usc is bus C phase voltage virtual values, and Φ sc are bus C phases phase angle；
D, server are stored the n one-dimension array received by the reception time successively, and formation array Ps [n] [8]=Tsn,
Fsn, Usan, Φ san, Usbn, Φ sbn, Uscn, Φ scn }, wherein, Tsn is n-th of voltage acquisition moment, and fsn is n-th
Voltage acquisition moment corresponding busbar voltage frequency, Usan is that n-th of voltage acquisition moment corresponding bus A phase voltages are effective
Value, Φ san are n-th of voltage acquisition moment corresponding bus A phases phase angle, and Usbn is that n-th of voltage acquisition moment is corresponding
Bus B phase voltage virtual values, Φ sbn are n-th of voltage acquisition moment corresponding bus B phases phase angle；Uscn is n-th of voltage
Moment corresponding bus C phase voltage virtual values are gathered, Φ scn are n-th of voltage acquisition moment corresponding bus C phases phase angle；
E, the branch line phase voltage cycle waveform according to collection, calculate virtual value, frequency ft and the phase angle of each phase voltage of branch line, and
By checkout result and the corresponding voltage acquisition moment Tt composition one-dimension array Pt [8]=Tt, ft, Ut1, Φ t1, Ut2, Φ t2,
Ut3, Φ t3 } it is stored in locally as measurement data, wherein, Tt is the voltage acquisition moment, and ft is branch line electric voltage frequency, and Us1 is
Branch line the first phase voltage virtual value, Φ s1 are the first phase of branch line phase angle, and Us2 is branch line the second phase voltage virtual value, and Φ s2 are
The second phase of branch line phase angle；Us3 is branch line third phase voltage effective value, and Φ s3 are branch line third phase phase angle；
F, corresponding reference data when obtaining from server voltage acquisition moment identical (i.e. Tt=Tsm), and by measurement data
It is compared with reference data, is specially：
F1, when the difference at A, B, C three-phase voltage phase angle in reference data is in the range of 120 ° of ± ε, show that bus phase voltage is adopted
Collection is normal, into step F2, wherein, ε is that phase voltage phase difference caused by three-phase alternating voltage neutral point excursion allows deviation value,
Span is ε≤15 °；
F2, judge whether ft=fsm sets up, if so, showing that branch line belongs to same AC synchronous power network with bus, into step
F3；
F3, judge whether ΔΦ=arccos [cos (Φ ti- Φ sjm+ θ)]≤δ sets up, if so, determining the branch corresponding to Φ ti
The phase sequence title of line 3 is identical with the phase sequence title of the bus 1 corresponding to now Φ sjm, and the phase sequence title of determination is exported, no
Then, the asynchronous information of output phase sequence, wherein, m=1,2 ..., n, i=1,2,3, j=a, b, c, θ be busbar voltage collection point with
Phase difference compensation value caused by the wiring group difference of voltage conversion apparatus between branch line collection point, δ value is surveyed by benchmark
Measure device and error itself, the error of voltage conversion device, busbar voltage collection point and the branch line voltage acquisition point of measuring terminals
Between line length together decide on.
10. a kind of absolute phase sequence measuring method according to claim 9, it is characterised in that：The specific UTC time point
For UTC time integer second or UTC time integer point.
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Cited By (8)
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| CN108008218A (en) * | 2017-11-27 | 2018-05-08 | 王建安 | A kind of micro-, minor scale power net running rate recognizing method |
| CN109142977A (en) * | 2018-09-13 | 2019-01-04 | 无锡圣普电力科技有限公司 | The phase automatic testing method of transient state recording type fault detector |
| CN112798878A (en) * | 2021-02-25 | 2021-05-14 | 山东科汇电力自动化股份有限公司 | Line transposition automatic phase sequence identification method based on voltage synchronous comparison |
| CN116317170A (en) * | 2023-05-18 | 2023-06-23 | 北京智芯微电子科技有限公司 | Power supply system, power consumption information measuring method and device thereof and storage medium |
| EP4306973A1 (en) * | 2022-07-12 | 2024-01-17 | Grid Instruments d.o.o. | A system and a method for energised conductor phase identification based on synchronous measurements using a network model |
| CN117949743A (en) * | 2024-03-26 | 2024-04-30 | 四川英杰新能源有限公司 | Phase line detection method |
| CN118566599A (en) * | 2023-12-18 | 2024-08-30 | 南京南瑞继保电气有限公司 | Phase selection method and device for distinguishing wiring misorder of transformer |
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| CN108008218A (en) * | 2017-11-27 | 2018-05-08 | 王建安 | A kind of micro-, minor scale power net running rate recognizing method |
| CN109142977A (en) * | 2018-09-13 | 2019-01-04 | 无锡圣普电力科技有限公司 | The phase automatic testing method of transient state recording type fault detector |
| CN109142977B (en) * | 2018-09-13 | 2021-02-02 | 无锡圣普电力科技有限公司 | Phase automatic detection method of transient recording type fault indicator |
| CN112798878A (en) * | 2021-02-25 | 2021-05-14 | 山东科汇电力自动化股份有限公司 | Line transposition automatic phase sequence identification method based on voltage synchronous comparison |
| EP4306973A1 (en) * | 2022-07-12 | 2024-01-17 | Grid Instruments d.o.o. | A system and a method for energised conductor phase identification based on synchronous measurements using a network model |
| WO2024013204A1 (en) * | 2022-07-12 | 2024-01-18 | Grid Instruments D.O.O. | A system and a method for energised conductor phase identification based on synchronous measurements using a network model |
| CN116317170A (en) * | 2023-05-18 | 2023-06-23 | 北京智芯微电子科技有限公司 | Power supply system, power consumption information measuring method and device thereof and storage medium |
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| CN118566599A (en) * | 2023-12-18 | 2024-08-30 | 南京南瑞继保电气有限公司 | Phase selection method and device for distinguishing wiring misorder of transformer |
| CN117949743A (en) * | 2024-03-26 | 2024-04-30 | 四川英杰新能源有限公司 | Phase line detection method |
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