CN104459539B - A kind of many number of pole-pairs generator's power and angle measuring methods - Google Patents
A kind of many number of pole-pairs generator's power and angle measuring methods Download PDFInfo
- Publication number
- CN104459539B CN104459539B CN201410716224.2A CN201410716224A CN104459539B CN 104459539 B CN104459539 B CN 104459539B CN 201410716224 A CN201410716224 A CN 201410716224A CN 104459539 B CN104459539 B CN 104459539B
- Authority
- CN
- China
- Prior art keywords
- generator
- pole
- power
- fluted disc
- pairs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a kind of many number of pole-pairs generator's power and angle measuring methods, including the number of teeth to generator, tooth width, space width coding processing is carried out according to coding rule, when generator is rotated, fluted disc is with alternator shaft synchronous axial system, signal acquisition is carried out to the fluted disc using phase demodulation probe, you can obtain containing the anglec of rotation of alternator shaft and the phase discrimination signal of electrode sequence number information.The method that the present invention is provided is popped one's head in using generator phase demodulation and the real-time measurement of generator's power and angle is carried out to the signal that generator fluted disc is produced, the signal can apply to the direct measurement of the generator's power and angle of any number of pole-pairs, overcome in the prior art because phase discrimination signal cannot be particularly the problem demarcated to the pole sequence number of many number of pole-pairs generators so as to cause many applications to be restricted to generator, certainty of measurement and real-time response characteristic are substantially increased, is supported for the Automated condtrol of the measurement of power system the whole network generator's power and angle and power network provides reliable data.
Description
Technical field
The present invention relates to Automation of Electric Systems control technology, a kind of many number of pole-pairs generator's power and angle measurements are specifically related to
Method.
Background technology
Generator's power and angle is one of the important state variables for reacting stability of power system, it be grid disturbance, vibration and
The important record data of unstability track, generator's power and angle refers to the folder between the built-in potential of generator and generator terminal voltage
Angle, the key for measuring generator's power and angle is to measure the locus of generator built-in potential, and built-in potential is in itself immeasurablel
Electric parameter, because generator built-in potential direction is fixed with alternator shaft position, so measurement built-in potential needs a rotating shaft
Signal, the angle demarcated between improvement axis signal and generator built-in potential（Initial angle）, then, rotating shaft signal is measured with generator terminal electricity
Angle between pressure just can determine that the locus of generator built-in potential, so generally people can only be by measuring rotating shaft signal
Method obtains the locus of built-in potential indirectly.
By setting measure speed gearses fluted disc on generator rotor shaft, brought by certain change and realize measuring power angle.
, it is necessary to be processed and the same number of number of teeth of power generator electrode logarithm and tooth pitch phase on fluted disc when generator is many number of pole-pairs situations
Together, occur because mismachining tolerance, the alignment error etc. of fluted disc frequently can lead to the inconsistent situation of the facewidth, tooth pitch, so as to cause
The generator's power and angle error measured is larger.In order to reduce error, it is modified frequently with software algorithm, in the prior art
Having " method of average " and " characteristic matching method " two methods carries out generator's power and angle measurement, and " method of average " is using the rotation for measuring
Total phase demodulation angle in cycle subtracts total initial phase angle, then divided by the number of pole-pairs of generator, so as to obtain an average generating
Machine generator rotor angle, the method when Generator Stable runs with precision higher, but when generator is in transient state, dynamic operation
During condition, because it equalizes effect so that the generator's power and angle of measurement is unable to the generator rotor angle state that accurate response goes out generator；
" characteristic matching method " is the alignment error using fluted disc, finds canine tooth using software algorithm and to extrapolate phase discrimination signal corresponding
Tooth sequence number, then subtract the initial phase angle of corresponding teeth and obtain the generator rotor angle of generator, this method can cause feature when generator frequency fluctuates
It fails to match for tooth, so as to cause measurement error.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provide it is a kind of in real time, high many of reliability
Number of pole-pairs generator's power and angle measuring method.
Technical scheme：To achieve the above object, many number of pole-pairs generator's power and angle measuring methods of the invention, including following step
Suddenly：
（1）Many numbers of pole-pairs of many number of pole-pairs generators are carried out into serial number；
（2）The number of teeth mesh of the fluted disc being arranged on alternator shaft, tooth width, space width are divided according to coding rule
Area encodes；
（3）When many number of pole-pairs generators are rotated, the fluted disc on alternator shaft synchronously turns with alternator shaft
It is dynamic；
（4）Phase demodulation probe installed in alternator shaft side carries out signal acquisition to the fluted disc for rotating, and obtains different volumes
The continuous binary signal of the fluted disc of code area code, the binary signal is comprising alternator shaft position and power generator electrode sequence
Number phase discrimination signal.
Beneficial effect：The method that the present invention is provided is popped one's head in using generator phase demodulation and the signal that generator fluted disc is produced is carried out
The real-time measurement of generator's power and angle, there is provided the phase discrimination signal of real-time detection alternator shaft position and power generator electrode sequence number,
The signal can apply to the direct measurement of the generator's power and angle of any number of pole-pairs, overcome in the prior art due to phase discrimination signal
Generator cannot be particularly and the pole sequence number of many number of pole-pairs generators is demarcated so as to cause what many applications were restricted
Problem, substantially increases certainty of measurement and real-time response characteristic, is the measurement of power system the whole network generator's power and angle and power network
Automated condtrol is supported there is provided reliable data.
Brief description of the drawings
Fig. 1 is many number of pole-pairs generator's power and angle measuring method flow charts；
Fig. 2 is the corresponding fluted disc code area subregion schematic diagram of generator that number of pole-pairs is 4；
Fig. 3 is binary system corresponding teeth coding schematic diagram；
Fig. 4 is to encode the fluted disc coding schematic diagram that area code is 3.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
As shown in figure 1, many number of pole-pairs generator's power and angle measuring methods that the present invention is provided, comprise the following steps：Will be described
Many numbers of pole-pairs of many number of pole-pairs generators carry out serial number；Number of teeth mesh, the facewidth of the fluted disc that will be arranged on alternator shaft
Degree, space width carry out zonal coding according to coding rule：The code area of the fluted disc is averagely divided into and the generating first
One group of lower Item area of machine number of pole-pairs equal number；Then serial number is carried out to the lower Item area after division successively；Finally press
The tooth of the fluted disc in the corresponding lower Item area of each numbering is processed solidification according to coding rule, the coding rule refers to compile
Synchronization field, number field, check field and filling field are write in code information successively；When many number of pole-pairs generators are rotated
When, the fluted disc on alternator shaft is with alternator shaft synchronous axial system；Phase demodulation installed in alternator shaft side is visited
Head carries out signal acquisition to the fluted disc for rotating, and obtains the continuous binary signal of the fluted disc of different coding area code, the binary system
Signal is the phase discrimination signal comprising alternator shaft position and power generator electrode sequence number：Preset critical value；The phase demodulation is visited
Head is by the distance between the preceding surface of the detection probe and the fluted disc corresponding level signal of generation：When the distance is more than described
High level is produced during critical value, low level is produced when the distance is less than the critical value.
Embodiment：
In embodiments of the present invention, the generator for using is the generator that number of pole-pairs is 4, is 4 generator to number of pole-pairs
Measuring power angle illustrate, many numbers of pole-pairs of the generator that number of pole-pairs is 4 are carried out into serial number, number by 1 to 4；Then
The number of teeth mesh of the fluted disc being arranged on alternator shaft, tooth width, space width are carried out into partition encoding according to coding rule, is encoded
Fluted disc after subregion includes the information of power generator electrode logarithm and pole sequence number, as shown in Fig. 2 being the generator pair that number of pole-pairs is 4
The fluted disc code area subregion schematic diagram answered, power generator electrode logarithm is 4, so fluted disc coding has divided into four lower Item areas, four
By 1 to 4, each code area encodes the sequence number in individual lower Item area according to following coding rules to the fluted disc of each coding area code
Processing solidification, the coding rule refers to write synchronization field, number field, check field successively in coding information and fill out
Fill field, then generator fluted disc and phase demodulation probe be processed and installed, when the fluted disc on alternator shaft with
During alternator shaft synchronous axial system, the phase demodulation probe installed in alternator shaft side can obtain the fluted disc of different coding area code
Continuous binary signal, in the binary signal, as shown in figure 3, for binary digit 0 by the way of tooth after first groove mark
It is fixed, demarcated by the way of first tooth pit for binary digit 1, critical value is preset, the phase demodulation probe is by detection
Pop one's head in the distance between the preceding surface and the fluted disc corresponding level signal of generation：Produced when the distance is more than the critical value
Raw high level, low level is produced when the distance is less than the critical value, and the binary signal is comprising alternator shaft position
Put and power generator electrode sequence number phase discrimination signal, the continuous binary signal information contains synchronization field, number field, school
Field and filling field are tested, synchronization field, number field, check field and filling field is write successively in coding information
It is exactly the coding rule of generator fluted disc, as shown in figure 4, for the corresponding fluted disc code area of power generator electrode serial number 3 encodes rule
The coding area code that then schematic diagram, alternatively referred to as phase demodulation probe are obtained is the continuous binary signal of 3 fluted disc, can from figure
No. 3 code areas for going out fluted disc are (big by synchronous head field (11), number field (00010), check field (1) and filling field
In 6 0) represent, there it can be seen that the fixation of synchronous head field is by continuous two 1 expressions, the bit length of number field is by sending out
Motor number of pole-pairs determines, because in the present embodiment, power generator electrode logarithm is 4, it is possible to which it is 5 to take field length, and field is represented
Scope is 0-31, and sequence number 0 is retained, then the number of pole-pairs scope that can be demarcated is 1-31, and, by 1 expression, its value is by same for check field
Step head field the 1st starts to numbering last 11 number for being included to determine, if number is odd number, the position 1, otherwise
It is 0, the length for filling field extends to the original position of next code area, at least above the bit length of number field, with
Just phase discrimination signal decoding device can accurately realize synchronous head triggering along the function such as detection and anti-interference detection, it can be seen that, in hair
It is exportable to contain alternator shaft position and power generator electrode sequence number by phase demodulation probe in machine shaft rotation process
Phase discrimination signal, the real-time measurement of generator's power and angle is carried out finally by the phase discrimination signal, and the signal can apply to any extremely right
The direct measurement of several generator's power and angles.
The above is only the preferred embodiment of the present invention, it should be pointed out that：Come for those skilled in the art
Say, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (3)
1. a kind of many number of pole-pairs generator's power and angle measuring methods, it is characterised in that：Comprise the following steps：
（1）Many numbers of pole-pairs of many number of pole-pairs generators are carried out into serial number；
（2）The number of teeth mesh of the fluted disc being arranged on alternator shaft, tooth width, space width are carried out into subregion volume according to coding rule
Code；
（3）When many number of pole-pairs generators are rotated, the fluted disc on alternator shaft is with alternator shaft synchronous axial system；
（4）Phase demodulation probe installed in alternator shaft side carries out signal acquisition to the fluted disc for rotating, and obtains different coding area
Number fluted disc continuous binary signal, the binary signal is comprising alternator shaft position and power generator electrode sequence number
Phase discrimination signal；
The step（2）Comprise the following steps：
（2-1）The code area of the fluted disc is averagely divided into one group of small volume with the power generator electrode logarithm equal number first
Code area；
（2-2）Then serial number is carried out to the lower Item area after division successively；
（2-3）It is last that the tooth of the fluted disc in the corresponding lower Item area of each numbering is processed solidification according to coding rule, it is described
Coding rule refers to write synchronization field, number field, check field and filling field successively in coding information.
2. many number of pole-pairs generator's power and angle measuring methods according to claim 1, it is characterised in that：The step（4）Bag
Include following steps：
（4-1）Preset critical value；
（4-2）Phase demodulation probe is by the corresponding level letter of the distance between the preceding surface of detection probe and the fluted disc generations
Number：High level is produced when the distance is more than the critical value, low level is produced when the distance is less than the critical value.
3. many number of pole-pairs generator's power and angle measuring methods according to claim 1, it is characterised in that：Phase discrimination signal is provided
Decoding device, for phase discrimination signal triggering along detection and anti-interference detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410716224.2A CN104459539B (en) | 2014-12-02 | 2014-12-02 | A kind of many number of pole-pairs generator's power and angle measuring methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410716224.2A CN104459539B (en) | 2014-12-02 | 2014-12-02 | A kind of many number of pole-pairs generator's power and angle measuring methods |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104459539A CN104459539A (en) | 2015-03-25 |
| CN104459539B true CN104459539B (en) | 2017-06-16 |
Family
ID=52905896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410716224.2A Active CN104459539B (en) | 2014-12-02 | 2014-12-02 | A kind of many number of pole-pairs generator's power and angle measuring methods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104459539B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0630097A2 (en) * | 1993-06-07 | 1994-12-21 | Switched Reluctance Drives Ltd | Electric machine control system with rotor position encoder |
| US6100823A (en) * | 1996-06-11 | 2000-08-08 | Switched Reluctance Drives Limited | Single sensor position encoder providing two levels of resolution |
| CN2516981Y (en) * | 2001-12-11 | 2002-10-16 | 北京许继电气有限公司 | Device for testing synchronous machine powder angle |
| CN101299058A (en) * | 2008-07-03 | 2008-11-05 | 国电南瑞科技股份有限公司 | Load angle direct measurement method of hydroelectric synchronous machine |
| CN203414479U (en) * | 2013-08-19 | 2014-01-29 | 西安江河电站技术开发有限责任公司 | Monitoring device of rotation speed of water wheel generator group |
-
2014
- 2014-12-02 CN CN201410716224.2A patent/CN104459539B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0630097A2 (en) * | 1993-06-07 | 1994-12-21 | Switched Reluctance Drives Ltd | Electric machine control system with rotor position encoder |
| US6100823A (en) * | 1996-06-11 | 2000-08-08 | Switched Reluctance Drives Limited | Single sensor position encoder providing two levels of resolution |
| CN2516981Y (en) * | 2001-12-11 | 2002-10-16 | 北京许继电气有限公司 | Device for testing synchronous machine powder angle |
| CN101299058A (en) * | 2008-07-03 | 2008-11-05 | 国电南瑞科技股份有限公司 | Load angle direct measurement method of hydroelectric synchronous machine |
| CN203414479U (en) * | 2013-08-19 | 2014-01-29 | 西安江河电站技术开发有限责任公司 | Monitoring device of rotation speed of water wheel generator group |
Non-Patent Citations (1)
| Title |
|---|
| 同步发电机功角高精度测量方法及其实现;王少荣，等;《中国机械工程》;19990630;第10卷(第6期);667-671 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104459539A (en) | 2015-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sapena-Bano et al. | The harmonic order tracking analysis method for the fault diagnosis in induction motors under time-varying conditions | |
| US10012154B2 (en) | Reduced power consumption with sensors transmitting data using current modulation | |
| CN109633442A (en) | Detection method, device, equipment and the storage medium of generator speed fluctuation | |
| CN107451364B (en) | Method for identifying equivalent parameters of DFIG wind power plant | |
| CN104487808B (en) | For determining the system of the revolution rotating the axle installed and for the method determining the revolution rotating the axle installed | |
| CN101210934A (en) | Method for determining the rotation speed of rotating shaft | |
| CN111046327B (en) | Prony analysis method suitable for low-frequency oscillation and subsynchronous oscillation identification | |
| CN104378260A (en) | CAN bus load rate testing method, device and system | |
| CN111144009B (en) | Running state evaluation method, device, equipment and storage medium of fan | |
| CN105604805B (en) | Method and device for measuring yaw angle of wind generating set | |
| CN104852743B (en) | Absolute value encoder signal processing apparatus and method | |
| CN104459539B (en) | A kind of many number of pole-pairs generator's power and angle measuring methods | |
| CN106546762A (en) | A kind of measurement of rotating speed circuit method of work in asynchronous generator power-generating control system | |
| CN115792762B (en) | Partial discharge signal reconstruction method and device for hydraulic generator | |
| CN104569493B (en) | Pitch error tests system | |
| CN108106647A (en) | A kind of code-disc building method of monorail absolute optical encoder | |
| CN107144225A (en) | A kind of simple absolute circle grating scale | |
| CN106645950B (en) | A kind of power angle of synchronous generator method for real-time measurement and device | |
| CN116820821A (en) | Disk failure detection method, apparatus, electronic device and computer readable storage medium | |
| CN115208247B (en) | Rotor position measuring method and device of motor | |
| CN101478285A (en) | Motor speed detection method | |
| CN103760514A (en) | Rapid detection method and device of electric energy meter | |
| CN104482946A (en) | Sensor collection processing method | |
| CN111765965B (en) | Method and system for detecting errors of vibration sensor of hydraulic unit, terminal equipment and readable storage medium | |
| CN107237724A (en) | Rotation angle acquisition system, fan yaw angle monitoring system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |