CN206292310U - A kind of absolute phase sequence measuring system - Google Patents
A kind of absolute phase sequence measuring system Download PDFInfo
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- CN206292310U CN206292310U CN201621406598.5U CN201621406598U CN206292310U CN 206292310 U CN206292310 U CN 206292310U CN 201621406598 U CN201621406598 U CN 201621406598U CN 206292310 U CN206292310 U CN 206292310U
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Abstract
The utility model 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 compare 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 utility model 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 as the phase sequence Name Error of benchmark,Therefore the phase sequence title for measuring is accurately and reliably,One reference measurement device can simultaneously support that multiple measuring terminals carry out absolute phase sequence measurement,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 utility model is related to a kind of absolute phase sequence measuring system.
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 is inconsistent with its actual voltage-phase, so as to cause the confusion in maintenance management, and most probably
Thus equipment or personal injury are produced.Prior art generally checked using nuclear phase instrument two different energized conductors be with mutually or
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 near mains side
Energized conductor 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
Reliable reference substance carries out the measurement of phase sequence and phase sequence title.
Utility model content
The purpose of this utility model is directed to the deficiencies in the prior art, a kind of absolute phase sequence measuring system is proposed, with power transformation
The phase sequence title of any circuit for determining in standing to belong to transformer station's supply district on the basis of bus wire phase sequence, method simply has
Effect, measurement result is accurately and reliably.
The utility model 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 name 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 reference measurement
Device communicates to connect the server for storing bus phase voltage data and each phase phase sequence title of bus, and measuring terminals are by wireless
Communication network is connected with server, for obtaining bus phase voltage data and each phase phase sequence title of bus from server, and according to branch
Line phase voltage data, bus phase voltage data and each phase phase sequence title of bus determine the phase sequence title of each phase of branch line.
The utility model can also be 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 name 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 reference measurement
Device communicates to connect the server for storing bus phase voltage data and each phase phase sequence title of bus, and measuring terminals are by wireless
Communication network is connected with server, for obtaining bus phase voltage data and each phase phase sequence title of bus from server, and according to branch
Line phase voltage data, bus phase voltage data and each phase phase sequence title of bus determine the phase sequence title of each phase of branch line, and benchmark surveys
Amount device includes the first list of first voltage acquisition module and first voltage the acquisition module connection for gathering bus phase voltage
Piece machine, the first gps clock module being connected with the first single-chip microcomputer respectively and communication module, the first gps clock module are special at each
Fixed UTC time point sends 1PPS pulse signals as trigger signal, first voltage collection mould to first voltage acquisition module
Root tuber is according to start trigger signal, the phase voltage week waveform of continuous acquisition multiple bus, phase electricity of first single-chip microcomputer according to collection
Pressure cycle waveshape goes out virtual value, frequency and the phase angle of each phase voltage of bus, and by each voltage acquisition moment and calculating
Result is uploaded onto the server as bus phase voltage data by communication module.
Further, the measuring terminals include for gather the branch line phase voltage second voltage acquisition module and
The second singlechip of second voltage acquisition module connection, the second gps clock module for be connected with second singlechip respectively and wirelessly
Communication module, the second gps clock module sends 1PPS pulses and believes in certain specific UTC time point to second voltage acquisition module
Number as trigger signal, second voltage acquisition module according to start trigger signal, the phase voltage of the multiple branch lines of continuous acquisition
All waveforms, second singlechip according to the phase voltage cycle waveshape of collection go out the virtual value of each phase voltage of branch line, frequency and
Phase angle, voltage acquisition moment and result of calculation are stored in locally, and by radio communication mold as branch line phase voltage data
Block downloads from a server the bus phase voltage data at identical voltage acquisition moment, and bus phase voltage data and branch line are verified respectively
Voltage effective value, frequency and phase angle in phase voltage data 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, can simultaneously carry out the collection of the bus three-phase voltage；The second voltage acquisition module includes three voltage acquisition sensings
Element and corresponding Acquisition Circuit, can simultaneously carry out the collection of the branch line three-phase voltage.
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, phase color of each phase phase sequence title of the bus according to each phase of phase sequence or bus of transformer station's main equipment
Sign Board is obtained, and transformer station's main equipment includes transformer or transformer.
The utility model 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
According to measuring terminals obtain any circuit phase voltage data, the phase voltage data that measuring terminals will be obtained in transformer station's supply district
Compare with reference data, with reference to each phase phase sequence title of bus, draw the phase sequence title of each phase of the circuit, in transformer station bus due to
Directly 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 name for measuring
Claim 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, and in uploading onto the server, measuring terminals are special at certain
Fixed UTC time point gathers the phase voltage waveform of circuit, after calculating circuit phase voltage data, and is downloaded from server corresponding
Bus phase voltage data be compared, therefore a reference measurement device can simultaneously support that multiple measuring terminals are carried out definitely
Phase sequence is measured, and 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 using high
The transmitted data on network of reliability, two-forty, and the accuracy of phase sequence measurement does not receive communication network bandwidth, data transfer time delay etc.
The influence of factor, reduces networking development cost and communications cost.
4th, the punctual required precision of reference measurement device and measuring terminals is low, and the crystal oscillator clock using precision≤± 5ppm is
Use requirement can be met, therefore greatly reduce cost.
5th, the utility model is by comparing voltage effective value, frequency in bus phase voltage data and circuit phase voltage data
Rate, phase angle can obtain a result, and method is easy and effective.
Brief description of the drawings
The utility model is described in further details below in conjunction with the accompanying drawings.
Fig. 1 is system structure diagram of the present utility model.
Specific embodiment
In region in power distribution network outside transformer station, the phase sequence name of voltage data and each phase according to each phase of substation bus bar
Referred to as benchmark determines the phase sequence title of each phase of any branch line, and the phase sequence title of each phase of branch line for drawing by this way is
The absolute phase sequence of each phase of branch line, as shown in figure 1, definitely phase sequence measuring system is included for obtaining the phase voltage number of substation bus bar 1
According to and each phase phase sequence title of bus 1 reference measurement device 2, for obtaining the phase voltage data of transformer station supply district inner branch line 3
Measuring terminals 4 communicated to connect for storing the phase voltage data of bus 1 and each phase phase sequence title of bus 1 with reference measurement device 2
Server 5, in transformer station the phase sequence title of each phase of bus 1 according to the phase color Sign Board of each phase of bus 1 obtain, reference measurement dress
Putting 2 is included for gathering the first voltage acquisition module 21 and first voltage acquisition module 21 of the phase voltage of bus 1 are connected first
Single-chip microcomputer 22, the first gps clock module 23 being connected with the first single-chip microcomputer respectively and communication module 24, measuring terminals 4 include using
In collection the phase voltage of branch line 3 second voltage acquisition module 41 and second voltage acquisition module 41 connection second singlechip 42,
The the second gps clock module 43 and wireless communication module 44 being connected with second singlechip 42 respectively, first voltage acquisition module 21
Including three voltage acquisition sensing elements and corresponding Acquisition Circuit, three voltage acquisition sensing elements respectively with transformer station's transformation
Phase line A, B of the low-pressure side of device 11, C and zero line N are permanently connected, can synchronously carry out the collection of the A phases, B phases and C phase voltages of bus 1,
The high-pressure side of substation transformer 11 is connected with bus 1, second voltage acquisition module 41 include three voltage acquisition sensing elements and
Corresponding Acquisition Circuit, three voltage acquisition sensing elements respectively with phase line A, B, the C of the low-pressure side circuit of electricity consumption side transformer 31
And zero line N is connected temporarily, the collection of first phase, the second phase and third phase voltage of branch line 3, electricity consumption side transformer can be simultaneously carried out
31 high-pressure sides are connected with branch line 1, and the first gps clock module 23 includes the first GPS module and be connected with the first GPS module first
Crystal oscillator clock, the first crystal oscillator clock precision is ± 5ppm, the second gps clock module 43 include the second GPS module and with the 2nd GPS
Second crystal oscillator clock of module connection, the second crystal oscillator clock precision is ± 5ppm, and measuring terminals 4 can be with transformer station's supply district
Interior any branch line 3 is connected, and different branch lines 3 can be connected from different measuring terminals 4.
The utility model principle is as follows：
A, the phase sequence title that the three-phase phase line of bus 1 is determined according to the phase color Sign Board of 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, the
One voltage acquisition module 21 according to start trigger signal, the phase voltage week waveform of 5 buses 1 of continuous acquisition, the A of bus 1, B,
C three-phase phase voltages are gathered simultaneously, and collection duration is about 0.1s, and gathered data is transmitted to the first single-chip microcomputer 22, the second gps clock
Module 43 receives the UTC time signal from gps satellite 6, when certain UTC time integer second arrives, second clock module 33
1PPS pulse signals are sent as trigger signal to second voltage acquisition module 41, and second voltage acquisition module 41 is believed according to triggering
Number start, the phase voltage of 5 branch lines 3 of continuous acquisition week waveform, A, B, C three-phase phase voltage of branch line 3 are gathered simultaneously, during collection
It is long to be about 0.1s, 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 of the bus 1 week waveform for receiving
Virtual value, frequency fs and phase angle, and by result of calculation, corresponding voltage acquisition moment Ts, with reference to the phase of the three-phase phase line of bus 1
Sequence title, composition one-dimension array Ps [8]={ Ts, fs, Usa, Φ sa, Usb, Φ sb, Usc, Φ sc } is uploaded as reference data
To 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
It is bus A phases phase angle, Usb is bus B phase voltage virtual values, and Φ sb are bus B phases phase angle；Usc has for bus C phase voltages
Valid value, Φ sc are bus C phases phase angle；
The n one-dimension array that D, server 5 will be received is stored successively by the reception time, and formation array Ps [n] [8]=
{ Tsn, fsn, Usan, Φ san, Usbn, Φ sbn, Uscn, Φ scn }, wherein, Tsn is n-th voltage acquisition moment, and fsn is
N-th voltage acquisition moment corresponding busbar voltage frequency, Usan is n-th voltage acquisition moment corresponding bus A phase voltages
Virtual value, Φ san are n-th voltage acquisition moment corresponding bus A phases phase angle, and Usbn is n-th voltage acquisition moment pair
The bus B phase voltage virtual values answered, Φ sbn are n-th voltage acquisition moment corresponding bus B phases phase angle；Uscn is n-th
Voltage acquisition moment corresponding bus C phase voltage virtual values, Φ scn are n-th voltage acquisition moment corresponding bus C phase phases
Angle；
E, second singlechip 42 calculate each phase voltage of branch line 3 according to the three-phase phase voltage of the branch line 3 week waveform for receiving
Virtual value, frequency ft and phase 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 } is stored in locally as measurement data, wherein, when Tt is voltage acquisition
Carve, ft is branch line electric voltage frequency, 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, 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 mutually electricity of bus 1
Pressure collection is normal, into step F2, wherein, ε is that the phase voltage phase difference that three-phase alternating voltage neutral point excursion causes is allowed partially
From 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
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 will determine phase sequence title it is defeated
Go out, otherwise, the asynchronous information of output phase sequence, wherein, m=1,2 ..., n, i=1,2,3, j=a, b, c, θ are adopted for the voltage of bus 1
Phase caused by the wiring group difference of the voltage conversion apparatus (such as transformer, transformer) between collection point and the collection point of branch line 3
Difference offset, the value of δ is by reference measurement device 2 and itself error, the error of voltage conversion device, bus 1 of measuring terminals 3
Line length between voltage acquisition point and the voltage acquisition point of branch line 3 is together decided on.
The above, preferred embodiment only of the present utility model, therefore the utility model can not be limited with this and implemented
Scope, i.e., the equivalence changes made according to present utility model application the scope of the claims and description and modification all should still belong to this
In the range of utility model patent is covered.
Claims (8)
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 the first voltage acquisition module and first voltage acquisition module for gathering bus phase voltage
First single-chip microcomputer of connection, the first gps clock module and communication module being connected with the first single-chip microcomputer respectively, the first gps clock
Module sends 1PPS pulse signals as trigger signal in each specific UTC time point to first voltage acquisition module, the
One voltage acquisition module is according to start trigger signal, the phase voltage week waveform of continuous acquisition multiple bus, the first single-chip microcomputer root
Phase voltage cycle waveshape according to collection goes out virtual value, frequency and the phase angle of each phase voltage of bus, and each voltage is adopted
Collection moment and result of calculation are uploaded onto the server as bus phase voltage data 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
Gather second singlechip, the difference of second voltage acquisition module and second voltage the acquisition module connection of the branch line phase voltage
The the second gps clock module and wireless communication module being connected with second singlechip, the second gps clock module are specific at certain
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 week waveform of the multiple branch lines of continuous acquisition, phase voltage of the second singlechip according to 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 the mother at identical voltage acquisition moment is downloaded from a server by wireless communication module
Line phase voltage data, verify voltage effective value in bus phase voltage data and branch line phase voltage data, frequency and phase respectively
Angle determines 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 simultaneously carried out；Institute
Stating second voltage acquisition module includes three voltage acquisition sensing elements and corresponding Acquisition Circuit, can simultaneously carry out the branch line
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, 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.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621406598.5U CN206292310U (en) | 2016-12-20 | 2016-12-20 | A kind of absolute phase sequence measuring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621406598.5U CN206292310U (en) | 2016-12-20 | 2016-12-20 | A kind of absolute phase sequence measuring system |
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| CN206292310U true CN206292310U (en) | 2017-06-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015073A (en) * | 2016-12-20 | 2017-08-04 | 王成楷 | A kind of absolute phase sequence measuring system and method |
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2016
- 2016-12-20 CN CN201621406598.5U patent/CN206292310U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015073A (en) * | 2016-12-20 | 2017-08-04 | 王成楷 | A kind of absolute phase sequence measuring system and method |
| CN107015073B (en) * | 2016-12-20 | 2023-05-05 | 王成楷 | Absolute phase sequence measurement system and method |
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