CN111649683A - Sensing control system for measuring winding deformation by optical fiber - Google Patents
Sensing control system for measuring winding deformation by optical fiber Download PDFInfo
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- CN111649683A CN111649683A CN202010540519.4A CN202010540519A CN111649683A CN 111649683 A CN111649683 A CN 111649683A CN 202010540519 A CN202010540519 A CN 202010540519A CN 111649683 A CN111649683 A CN 111649683A
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- display
- light
- interferometer
- winding
- signal
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- 238000004804 winding Methods 0.000 title claims abstract description 31
- 239000013307 optical fiber Substances 0.000 title claims abstract description 10
- 238000012545 processing Methods 0.000 claims abstract description 11
- 230000003287 optical effect Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 4
- 230000008569 process Effects 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/161—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by interferometric means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/165—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by means of a grating deformed by the object
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
Abstract
The invention discloses a sensing control system for measuring winding deformation by an optical fiber, which comprises an M-Z interferometer, a wave separator, a photoelectric detector, a signal processing unit, a controller, a wireless transmitting module and a display, wherein the display comprises a wireless receiving module. The invention couples the monitored reflected waves with different wavelengths together and transmits the coupled reflected waves into an M-Z interferometer; the M-Z interferometer divides light into two beams to complete interference after the two beams pass through two arms with different optical paths, and interference light is obtained; the wave separator divides the interfered light into different light according to wavelength and respectively transmits the light into the photoelectric detector, and the photoelectric detector converts the reflected light signal into an electric signal; the signal processing unit carries out algorithm processing on the electric signals to obtain optical wavelength, then the pressure value of each sensor is obtained and is transmitted into the controller, the controller processes the signals, and the processed results are sent to the wireless receiving module of the display through the wireless transmitting module, so that winding deformation is remotely monitored.
Description
Technical Field
The invention relates to the field of winding deformation monitoring, in particular to a sensing control system for measuring winding deformation by using an optical fiber.
Background
Due to the design, manufacture, material quality, operation and other aspects of large power transformers, serious accidents and faults of equipment occur, and the safe and stable operation of a power grid is seriously influenced (about dozens of large power transformer accidents occur every year in China).
The power transformer is an important device in a power generation, transmission and distribution system, the performance and the quality of the power transformer are directly related to the reliability and the operation benefit of the operation of the power system, and the winding is an important component of the transformer.
After carrying current, the transformer winding can establish axial and radial leakage magnetic fields in the space where the transformer winding is located and the surrounding space of the transformer winding; the windings themselves, which are in this magnetic field, are subjected to the action of "lorentz forces" or so-called electromagnetic forces, which generate mechanical stresses in the transformer winding material and which are partly transmitted to the other components of the transformer. If a weak link exists in the internal mechanical structure of the winding, deformation phenomena such as winding distortion, bulging or displacement and the like are inevitably generated, and sudden damage accidents can be caused in severe cases.
Therefore, the deformation of the winding must be monitored remotely in real time, so that the deformation condition of the winding can be known at any time, and faults can be avoided in time.
Disclosure of Invention
The invention aims to provide a sensing control system for detecting winding deformation by using an optical fiber, which solves the problem that the existing winding deformation cannot be remotely monitored in real time.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a sensing control system for measuring winding deformation by an optical fiber, which comprises an M-Z interferometer for receiving signals coupled by reflected waves with different wavelengths, wherein the M-Z interferometer comprises an input coupler and an output coupler, a measuring arm and a reference arm are connected in parallel between the input coupler and the output coupler, and the measuring arm and the reference arm are two arms with different optical paths and are used for carrying out phase interference on light; the M-Z interferometer is sequentially connected with a wave splitter, a photoelectric detector, a signal processing unit and a controller; the controller transmits the processed result out through the wireless transmitting module, and the wireless receiving module of the display displays the signal on the display after receiving the signal.
Further, the wavelength division filter has a wavelength division multiplexing function, and separates light with different wavelengths according to the wavelengths.
Still further, the photodetector is an EOT photodiode.
Still further, the display also comprises a CPU, and the CPU processes the received signals to display the signals on the display in the form of a wave form graph.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention couples the monitored reflected waves with different wavelengths together and transmits the coupled reflected waves into an M-Z interferometer; the M-Z interferometer divides light into two beams to complete interference after the two beams pass through two arms with different optical paths, and interference light is obtained; the wave separator divides the interfered light into different light according to wavelength and respectively transmits the light into the photoelectric detector, and the photoelectric detector converts the reflected light signal into an electric signal; the signal processing unit carries out algorithm processing on the electric signals to obtain optical wavelength, then the pressure value of each sensor is obtained and is transmitted into the controller, the controller processes the signals and sends the processed results to the wireless receiving module of the display through the wireless transmitting module, and the winding deformation is remotely monitored; the wireless receiving module receives the signals and transmits the signals to the CPU, and the signals are processed and processed by the CPU to be displayed on the display in a waveform diagram mode, so that workers can observe the change trend of the winding at any time.
Drawings
The invention is further illustrated in the following description with reference to the drawings.
FIG. 1 is a schematic structural diagram of a sensing control system for detecting winding deformation by an optical fiber according to the present invention;
FIG. 2 is a schematic diagram of the structure of the M-Z interferometer of the present invention;
description of reference numerals: 1. an M-Z interferometer; 101. an input coupler; 102. an output coupler; 103. a measuring arm; 104. a reference arm; 2. a wave splitter; 3. a photodetector; 4. a signal processing unit; 5. a controller; 6. a wireless transmitting module; 7. a display; 701. a wireless receiving module; 702. a CPU.
Detailed Description
As shown in fig. 1 and 2, a specific embodiment of a sensing control system for measuring winding deformation by an optical fiber comprises an M-Z interferometer 1 for receiving signals coupling reflected waves with different wavelengths together, wherein a plurality of fiber grating strain sensors are connected in series on the optical fiber for measuring winding deformation, so that the M-Z interferometer 1 receives signals coupling reflected waves with different wavelengths together.
The M-Z interferometer 1 includes an input coupler 101 and an output coupler 102, a measurement arm 103 and a reference arm 104 are connected in parallel between the input coupler 101 and the output coupler 102, and the measurement arm 103 and the reference arm 104 are two arms with different optical paths and are used for performing phase interference on light to obtain interference light. The M-Z interferometer 1 is sequentially connected with a wave splitter 2, a photoelectric detector 3, a signal processing unit 4 and a controller 5, the wave splitter has a wavelength division multiplexing function, light subjected to interference is divided into different light according to wavelength and respectively transmitted to the photoelectric detector, and the number of the photoelectric detectors is equal to that of the fiber bragg grating strain sensors for detecting winding deformation. The photoelectric detector is an EOT photodiode, reflected optical signals are converted into electric signals, the signal processing unit carries out algorithm processing on the electric signals to obtain optical wavelengths, then the pressure value of each sensor is obtained, the controller 5 transmits the processed result out through the wireless transmitting module 6, and the wireless receiving module 701 of the display 7 receives the signals and displays the signals on the display 7, so that workers can remotely observe the deformation value of the winding.
As another embodiment, other features are the same as those described above, and are not described herein again. The display 7 further comprises a CPU702, the wireless receiving module 701 of the display 7 receives the signal and transmits the signal to the CPU702, the signal is processed by the CPU and displayed on the display in a waveform diagram mode, and therefore workers can observe the change trend of the winding at any time.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (4)
1. The sensing control system for detecting the deformation of the winding by the optical fiber is characterized in that: the measuring arm and the reference arm are two arms with different optical paths and are used for carrying out phase interference on light; the M-Z interferometer is sequentially connected with a wave splitter, a photoelectric detector, a signal processing unit and a controller; the controller transmits the processed result out through the wireless transmitting module, and the wireless receiving module of the display displays the signal on the display after receiving the signal.
2. The system for sensing and controlling deformation of a fiber optic sensing winding of claim 1, wherein: the wave separator has the function of wavelength division multiplexing and separates the light with different wavelengths according to the wavelengths.
3. The system for sensing and controlling deformation of a fiber optic sensing winding of claim 1, wherein: the photodetector is an EOT photodiode.
4. The system for sensing and controlling deformation of a fiber optic sensing winding of claim 1, wherein: the display also comprises a CPU, and the CPU processes the received signals to display the signals on the display in the form of a wave form graph.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010540519.4A CN111649683A (en) | 2020-06-15 | 2020-06-15 | Sensing control system for measuring winding deformation by optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010540519.4A CN111649683A (en) | 2020-06-15 | 2020-06-15 | Sensing control system for measuring winding deformation by optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111649683A true CN111649683A (en) | 2020-09-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010540519.4A Pending CN111649683A (en) | 2020-06-15 | 2020-06-15 | Sensing control system for measuring winding deformation by optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111649683A (en) |
-
2020
- 2020-06-15 CN CN202010540519.4A patent/CN111649683A/en active Pending
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200911 |
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| WD01 | Invention patent application deemed withdrawn after publication |