CN2516981Y - Device for testing synchronous machine powder angle - Google Patents
Device for testing synchronous machine powder angle Download PDFInfo
- Publication number
- CN2516981Y CN2516981Y CN 01278161 CN01278161U CN2516981Y CN 2516981 Y CN2516981 Y CN 2516981Y CN 01278161 CN01278161 CN 01278161 CN 01278161 U CN01278161 U CN 01278161U CN 2516981 Y CN2516981 Y CN 2516981Y
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- Prior art keywords
- synchronous motor
- motor
- sensor
- tooth
- synchronous
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 40
- 239000000843 powder Substances 0.000 title 1
- 238000005070 sampling Methods 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims abstract description 7
- 239000000523 sample Substances 0.000 claims description 7
- 230000005291 magnetic effect Effects 0.000 claims description 6
- 238000012937 correction Methods 0.000 claims description 5
- 230000005294 ferromagnetic effect Effects 0.000 claims description 3
- 230000003321 amplification Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 5
- 230000001052 transient effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
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Abstract
The utility model relates to a device for measuring the power angle of a synchronous generator and a motor, which is composed of teeth, a sensor, an isolated amplifying circuit, a sampling holder, an A/D converter, a digital signal processor, a display, a keyboard and a communication interface, wherein the teeth are installed at the rotating part of a synchronous motor, and the sensor is installed at the stationary part of the synchronous motor. When the teeth rotate along with a rotor of the motor, a sawtooth pulse Up is generated in the sensor. The real-time measurement of the power angle of the synchronous motor is accomplished by magnifying and reshaping, A/D converting, digital sampling and signal processing to compare the phase difference of the sawtooth pulse and the terminal voltage Ug and the system voltage Us of the motor. The device is applied to the running and controlling and the fault wave recording of the synchronous motor.
Description
The utility model relates to the device at a kind of measurement synchronization generator, synchronous motor merit angle, belongs to the electrical measurement field.
The merit angle is one of important state parameter of synchronous generator, synchronous motor operation, and it directly determines the stability of synchronous motor operation.But do not have a kind of simple and effective direct measurement means for a long time, by drawing, have the artificial error of calculation always, particularly under synchronous motor transient state service condition, be difficult to obtain accurate believable result from other parameter indirect calculation.
The utility model provide a kind of under any running status the direct measurement mechanism at synchronous motor merit angle.
The measurement mechanism that the utility model solves the problems of the technologies described above is made up of tooth, sensor, isolating amplifier circuit, sampling maintenance and A/D converter, digital signal processor, display, communication interface and keyboard.Tooth is installed in the synchronous motor rotating part, and sensor is installed in the stationary part of synchronous motor, the probe of sensor near but Contact Tooth not, when tooth rotates with rotor, whenever circle, the inswept sensor probe of tooth once produces a dyke towards signal U in sensor
pDyke is towards signal U
pAfter isolating amplification, with synchronous motor terminal voltage signal U
gWith system voltage signal U
sCommon input sample keeps being converted to digital signal with A/D converter and exports digital signal processor to, and digital signal processor is to signal U
p, U
gAnd U
sSampling, relatively dyke is towards signal U
pWith motor terminal voltage signal U
gPhase angle difference δ '
gWith with system voltage signal U
sPhase angle difference δ '
s, deduct merit angle correction δ ', draw synchronous motor with respect to motor terminal voltage U
gMerit angle δ
gWith with respect to system voltage U
sMerit angle δ
sExport display and communication interface to, keyboard is to digital signal processor input operation instruction and setting value.Sensor is magnetic sensor or photoelectric sensor, and when using magnetic sensor, the material of tooth is a ferromagnetic metal.The quantity of tooth equals the magnetic pole logarithm of synchronous electric motor rotor, and single tooth is fixed on the motor rotating part any circumference angle, and a plurality of tooth equal angles are distributed on the same circumference of motor rotating part.The dyke that motor records when rotating so that synchronous rotational speed is unloaded is towards signal U '
pWith respect to motor terminal voltage signal U
gPhase angle difference as merit angle correction δ ', with the installation site and the inconsistent measured deviation that is produced of rotor magnetic pole position of corrected tooth.
The merit angle of the direct measurement synchronization motor of the utility model, the error of having avoided indirect calculation to bring, and can reflect the quick variation at synchronous motor merit angle under the transient condition in real time, measurement mechanism is simple and reliable, the supervision control that is applied to synchronous motor can intuitively show stability margin, improve running quality, reduce the danger of synchronous motor step-out, increase the security and stability of synchronous motor operation; Be applied to fault wave recording device can accurate recording and the various malfunctions of reflection synchronous motor under the real-time change at merit angle, for analyzing and failure judgement provides genuine and believable data.
Fig. 1 is the embodiment that the utility model is applied to two electrode synchronization electromotor measuring power angles.
Fig. 2 is the quantity and the installation site of the utility model tooth when being applied to four electrode synchronization electromotor measuring power angles.
Fig. 3 is the quantity and the installation site of the utility model tooth when being applied to sextupole synchronous motor measuring power angle.
In the drawings, 1. synchronous motor rotating shaft, 2. tooth, 3. electromagnetic sensor, 4. isolating amplifier circuit, 5. sampling keeps and A/D converter 6.DSP signal processor, 7. display, 8. communication interface, 9. keyboard.
In Fig. 1, the tooth that ferromagnetic metal material is made (2) is fixed on the two electrode synchronization electromotor axles (1), in motor shaft (1) 1 week of revolution, produces a dyke towards U in electromagnetic sensor (3)
pDyke is towards U
pAfter isolating amplifier circuit (4) is handled, with motor terminal voltage U
g, system voltage U
sThe common input sample of simulating signal keeps and A/D converter (5), through the digital signal U of A/D conversion
p, U
gAnd U
sExport DSP signal processor (6) to, DSP signal processor (6) is to digital signal U
p, U
gAnd U
sSampling processing, relatively dyke is towards signal U
pWith motor terminal voltage signal U
gWith system voltage signal U
sPhase place, produce merit angle correction δ ', finish synchronous motor with respect to motor terminal voltage U
gMerit angle δ
gWith with respect to system voltage U
sMerit angle δ
sComputing, LCD LCD (7) and RS-232 communication interface (8) are finished merit angle δ
gAnd δ
sDemonstration and output, keyboard (9) passes through to DSP signal processor (6) input instruction and setting value.For the n electrode synchronization electromotor, need n/2 tooth is installed, n/2 tooth equal angles is distributed on the same circumference of motor shaft, and Fig. 2 represents the radially installation site of last 2 teeth of 4 electrode synchronization electromotor axles, Fig. 3 represents the radially installation site of last 3 teeth of 6 electrode synchronization electromotor axles, by that analogy.
Claims (7)
1, a kind of synchronous motor measuring power angle device, form by tooth, sensor, isolating amplifier circuit, sampling maintenance and A/D converter, digital signal processor, display, communication interface and keyboard, it is characterized in that: tooth is installed in the rotating part of synchronous motor, sensor is installed in the stationary part of synchronous motor, the probe of sensor near but Contact Tooth not when tooth rotates with rotor, whenever circle, the inswept sensor probe of tooth once produces a dyke towards signal U in sensor
pDyke is towards signal U
pAfter isolating amplification, with synchronous motor terminal voltage signal U
gWith system voltage signal U
sCommon input sample keeps being converted to digital signal with A/D converter and exports digital signal processor to, and digital signal processor is to signal U
p, U
gAnd U
sSampling, relatively dyke is towards signal U
pWith motor terminal voltage signal U
gPhase angle difference δ '
gWith with system voltage signal U
sPhase angle difference δ '
s, deduct merit angle correction δ ', draw synchronous motor with respect to motor terminal voltage U
gMerit angle δ
gWith with respect to system voltage U
sMerit angle δ
sExport display and communication interface to, keyboard is to digital signal processor input operation instruction and setting value.
2, synchronous motor measuring power angle device as claimed in claim 1, it is characterized in that: described sensor is a magnetic sensor.
3, synchronous motor measuring power angle device as claimed in claim 2, it is characterized in that: the material of tooth is a ferromagnetic metal.
4, synchronous motor measuring power angle device as claimed in claim 1, it is characterized in that: described sensor is a photoelectric sensor.
5, synchronous motor measuring power angle device as claimed in claim 1, it is characterized in that: the quantity of tooth equals the magnetic pole logarithm of synchronous electric motor rotor.
6, synchronous motor measuring power angle device as claimed in claim 5 is characterized in that: single tooth is fixed on the motor rotating part any circumference angle, and a plurality of tooth equal angles are distributed on the same circumference of motor rotating part.
7, synchronous motor measuring power angle device as claimed in claim 1 is characterized in that: the dyke that motor records when rotating so that synchronous rotational speed is unloaded is towards signal U '
pWith respect to motor terminal voltage signal U
gPhase angle difference as merit angle correction δ '.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01278161 CN2516981Y (en) | 2001-12-11 | 2001-12-11 | Device for testing synchronous machine powder angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01278161 CN2516981Y (en) | 2001-12-11 | 2001-12-11 | Device for testing synchronous machine powder angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2516981Y true CN2516981Y (en) | 2002-10-16 |
Family
ID=33681712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01278161 Expired - Fee Related CN2516981Y (en) | 2001-12-11 | 2001-12-11 | Device for testing synchronous machine powder angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2516981Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005066648A1 (en) | 2003-12-31 | 2005-07-21 | Zhaolei Wang | A method for measuring the operating state of a synchronous motor using composite power angle meter |
| CN100361383C (en) * | 2005-08-08 | 2008-01-09 | 河北省电子信息技术研究院 | Synchronous motor excitation invariable power angle closed-loop auto-regulation method and its regulating device |
| CN102436284A (en) * | 2011-11-24 | 2012-05-02 | 潍柴动力股份有限公司 | Generator load continuous variable system |
| CN103185850A (en) * | 2011-12-30 | 2013-07-03 | Ls产电株式会社 | Apparatus and method for detecting failure of switching device in inverter |
| CN104065170A (en) * | 2014-07-04 | 2014-09-24 | 上海达实联欣科技发展有限公司 | Power distribution terminal device |
| CN104459539B (en) * | 2014-12-02 | 2017-06-16 | 国电南瑞科技股份有限公司 | A kind of many number of pole-pairs generator's power and angle measuring methods |
-
2001
- 2001-12-11 CN CN 01278161 patent/CN2516981Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005066648A1 (en) | 2003-12-31 | 2005-07-21 | Zhaolei Wang | A method for measuring the operating state of a synchronous motor using composite power angle meter |
| AU2003296231B2 (en) * | 2003-12-31 | 2009-02-26 | Zhaolei Wang | A method for measuring the operating state of synchronous motor by using composite power angle meter |
| US7535372B2 (en) | 2003-12-31 | 2009-05-19 | Zhaolei Wang | Method for measuring the operating state of a synchronous motor using composite power angle meter |
| EA011993B1 (en) * | 2003-12-31 | 2009-06-30 | Чаолей Ван | A method for measuring the operating state of a synchronous motor using composite power angle meter |
| AU2003296231B8 (en) * | 2003-12-31 | 2009-09-03 | Zhaolei Wang | A method for measuring the operating state of synchronous motor by using composite power angle meter |
| EP1703292A4 (en) * | 2003-12-31 | 2010-08-25 | Zhaolei Wang | A method for measuring the operating state of a synchronous motor using composite power angle meter |
| CN100361383C (en) * | 2005-08-08 | 2008-01-09 | 河北省电子信息技术研究院 | Synchronous motor excitation invariable power angle closed-loop auto-regulation method and its regulating device |
| CN102436284A (en) * | 2011-11-24 | 2012-05-02 | 潍柴动力股份有限公司 | Generator load continuous variable system |
| CN103185850A (en) * | 2011-12-30 | 2013-07-03 | Ls产电株式会社 | Apparatus and method for detecting failure of switching device in inverter |
| CN103185850B (en) * | 2011-12-30 | 2015-10-07 | Ls产电株式会社 | For detecting the apparatus and method of switching device fault in inverter |
| CN104065170A (en) * | 2014-07-04 | 2014-09-24 | 上海达实联欣科技发展有限公司 | Power distribution terminal device |
| CN104459539B (en) * | 2014-12-02 | 2017-06-16 | 国电南瑞科技股份有限公司 | A kind of many number of pole-pairs generator's power and angle measuring methods |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Hou Bin Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |