CN204389060U - Transformer optical fiber grating temperature-measuring system - Google Patents
Transformer optical fiber grating temperature-measuring system Download PDFInfo
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- CN204389060U CN204389060U CN201420842309.0U CN201420842309U CN204389060U CN 204389060 U CN204389060 U CN 204389060U CN 201420842309 U CN201420842309 U CN 201420842309U CN 204389060 U CN204389060 U CN 204389060U
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Abstract
The utility model discloses a kind of transformer optical fiber grating temperature-measuring system, comprise PC, data collecting card, photoelectric detecting signal amplifier, saw-toothed wave generator, F-P wave filter, coupling mechanism, wideband light source, photoswitch and Fiber Bragg Grating Sensor Array; To be combined with PC by using optical fiber grating temperature-measuring principle and inside transformer temperature is detected, the problem that existing transformer thermometric mode precision is low can be overcome, can the problem of Timeliness coverage Transformer Winding temperature anomaly, whether normally measuring point temperature and measuring point temperature rise rate can also be carried out half section of Transformer Winding temperature as foundation simultaneously, precision is higher, and stability is better.
Description
Technical field
The utility model relates to inside transformer temperature detection technical field, particularly relates to a kind of transformer optical fiber grating temperature-measuring system.
Background technology
Transformer Insulation Aging is one of factor affecting its life-span, and inside transformer temperature directly affects the speed of insulation ag(e)ing, therefore, Real-Time Monitoring is carried out to inside transformer temperature, takes when high temperature appears in inside transformer rational cooling measure to be the effective measures extending transformer serviceable life.
The detection technique that Transformer Winding on-line temperature monitoring is conventional mainly comprises infrared temperature-test technology, Thermistor Temperature Measurement technology and thermocouple temperature measurement technology etc., wherein infrared temperature-measuring intelligent is measured transformer surface temperature, measure structure and be easily subject to external interference, Thermistor Temperature Measurement technology and thermocouple temperature measurement technology are easily subject to the interference of electric system strong electromagnetic environment, thermometric poor effect, the precision of measurement result is difficult to be guaranteed.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of transformer optical fiber grating temperature-measuring system, the problem that existing transformer thermometric mode precision is low can be overcome, can the problem of Timeliness coverage Transformer Winding temperature anomaly, whether normally measuring point temperature and measuring point temperature rise rate can also be carried out half section of Transformer Winding temperature as foundation simultaneously, precision is higher, and stability is better.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of transformer optical fiber grating temperature-measuring system, comprise PC, data collecting card, photoelectric detecting signal amplifier, saw-toothed wave generator, F-P wave filter, coupling mechanism, wideband light source, photoswitch and Fiber Bragg Grating Sensor Array, described Fiber Bragg Grating Sensor Array is connected with photoswitch one end, other one section of described photoswitch is connected with coupling mechanism, described coupler input connects wideband light source, described coupler output connects F-P wave filter, described saw-toothed wave generator two ends connect F-P filter signal end respectively and photoelectric detecting signal amplifier compares end, described F-P filter output connects the signal input part of photoelectric detecting signal amplifier, described photoelectric detecting signal amplifier signal output terminal connection data capture card, described data collecting card output terminal connects PC data-interface.
Described coupling mechanism is three-dB coupler.
Between described wideband light source and coupling mechanism, isolator is set.
The model of described wideband light source is DL-BX-CS5169, and centre wavelength scope is 1530-1570nm; The model of described F-P wave filter is FFP-TF2, and wavelength band is 1260-1620nm, and the model of data collecting card is PCI-6133, and the model of light grating sensor is FBG-T-01, and operating wavelength range is 1510-1590nm.
The beneficial effect that produces of technique scheme is adopted to be: to be combined with PC by using optical fiber grating temperature-measuring principle and to detect inside transformer temperature, the problem that existing transformer thermometric mode precision is low can be overcome, can the problem of Timeliness coverage Transformer Winding temperature anomaly, whether normally measuring point temperature and measuring point temperature rise rate can also be carried out half section of Transformer Winding temperature as foundation simultaneously, precision is higher, and stability is better.
Accompanying drawing explanation
Fig. 1 is the utility model structure principle chart.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Easily external interference is subject to for solving existing transformer temperature measurement mechanism, thermometric poor effect, the precision of measurement result is difficult to guaranteed problem, the utility model discloses a kind of transformer optical fiber grating temperature-measuring system, it is characterized in that: comprise PC, data collecting card, photoelectric detecting signal amplifier, saw-toothed wave generator, F-P wave filter, coupling mechanism, wideband light source, photoswitch and Fiber Bragg Grating Sensor Array, described Fiber Bragg Grating Sensor Array is connected with photoswitch one end, other one section of described photoswitch is connected with coupling mechanism, described coupler input connects wideband light source, described coupler output connects F-P wave filter, described saw-toothed wave generator two ends connect F-P filter signal end respectively and photoelectric detecting signal amplifier compares end, described F-P filter output connects the signal input part of photoelectric detecting signal amplifier, described photoelectric detecting signal amplifier signal output terminal connection data capture card, described data collecting card output terminal connects PC data-interface, described coupling mechanism is three-dB coupler, between described wideband light source and coupling mechanism, isolator is set, the model of described wideband light source is DL-BX-CS5169, and centre wavelength scope is 1530-1570nm, the model of described F-P wave filter is FFP-TF2, and wavelength band is 1260-1620nm, and the model of data collecting card is PCI-6133, and the model of light grating sensor is FBG-T-01, and operating wavelength range is 1510-1590nm.
Fiber grating utilizes the photosensitivity of light material, the measures such as uv-exposure are adopted to form space phase grating at fiber core, the effect of fiber-optic grating sensor is in fact in fibre core, form an arrowband projection filtering or catoptron, the direction of light back light incidence after optical grating reflection of specific wavelength, the temperature acting on grating place makes the cycle of grating and refractive index change, and then cause the change of wavelength of transmitted light, the change of temperature therefore can be recorded by the change of detection of reflected optical wavelength.
The utility model is described for 35KV oil-filled transformer, for obtaining the Temperature Distribution of inside transformer assembly, especially Obtaining Accurate hot spot temperature of winding, 14 optical fiber are arranged, totally 218 fiber-optic grating sensors at key positions such as 35 kV transformer model machine windings, stay, iron core and oil tops.Wherein, low pressure winding the from the 2nd to the 59th cake (totally 64 cakes) arranges a fiber-optic grating sensor every two cakes; In the middle of high pressure winding, the 27th to the 34th cake (totally 58 cakes) is high-voltage branching section, and fiber-optic grating sensor is not arranged in this section of region; A fiber-optic grating sensor arranged by the every cake of from the 37th to the 56th cake.6 optical fiber are successfully arranged, totally 89 fiber-optic grating sensors in winding.Longitudinally offer a little groove in the middle of stay inner surface fiber-optic grating sensor is imbedded, every bracing bars buries 10 fiber-optic grating sensors underground, adjacent two sensors spacing is 60 mm, successfully arranges 4 optical fiber totally 66 fiber-optic grating sensors in this model machine.Layout fiber-optic grating sensor unshakable in one's determination adopts surface-mount type, every phase core limb surface longitudinal arranges each 10 fiber-optic grating sensors of two row, two sensor series connection are drawn, and adjacent two sensors spacing is 70 mm, and iron core successfully arranges 3 optical fiber totally 53 fiber-optic grating sensors.10 fiber-optic grating sensors measuring top-oil temperature are suspended on the default support of case lid, and adjacent two sensors spacing is 70 mm, and mounted optical fiber is carried out online temperature test according to accompanying drawing join dependency equipment.
In a word, the utility model detects inside transformer temperature by using optical fiber grating temperature-measuring principle to be combined with PC, the problem that existing transformer thermometric mode precision is low can be overcome, can the problem of Timeliness coverage Transformer Winding temperature anomaly, whether normally measuring point temperature and measuring point temperature rise rate can also be carried out half section of Transformer Winding temperature as foundation simultaneously, precision is higher, and stability is better.
Claims (4)
1. a transformer optical fiber grating temperature-measuring system, it is characterized in that: comprise PC, data collecting card, photoelectric detecting signal amplifier, saw-toothed wave generator, F-P wave filter, coupling mechanism, wideband light source, photoswitch and Fiber Bragg Grating Sensor Array, described Fiber Bragg Grating Sensor Array is connected with photoswitch one end, other one section of described photoswitch is connected with coupling mechanism, described coupler input connects wideband light source, described coupler output connects F-P wave filter, described saw-toothed wave generator two ends connect F-P filter signal end respectively and photoelectric detecting signal amplifier compares end, described F-P filter output connects the signal input part of photoelectric detecting signal amplifier, described photoelectric detecting signal amplifier signal output terminal connection data capture card, described data collecting card output terminal connects PC data-interface.
2. transformer optical fiber grating temperature-measuring system according to claim 1, is characterized in that: described coupling mechanism is three-dB coupler.
3. transformer optical fiber grating temperature-measuring system according to claim 2, is characterized in that: arrange isolator between described wideband light source and coupling mechanism.
4. transformer optical fiber grating temperature-measuring system according to claim 3, is characterized in that: the model of described wideband light source is DL-BX-CS5169, and centre wavelength scope is 1530-1570nm; The model of described F-P wave filter is FFP-TF2, and wavelength band is 1260-1620nm, and the model of data collecting card is PCI-6133, and the model of light grating sensor is FBG-T-01, and operating wavelength range is 1510-1590nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420842309.0U CN204389060U (en) | 2014-12-26 | 2014-12-26 | Transformer optical fiber grating temperature-measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420842309.0U CN204389060U (en) | 2014-12-26 | 2014-12-26 | Transformer optical fiber grating temperature-measuring system |
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| Publication Number | Publication Date |
|---|---|
| CN204389060U true CN204389060U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420842309.0U Expired - Fee Related CN204389060U (en) | 2014-12-26 | 2014-12-26 | Transformer optical fiber grating temperature-measuring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104515622A (en) * | 2014-12-26 | 2015-04-15 | 国家电网公司 | Fiber bragg grating temperature measurement system of transformer |
| CN108151910A (en) * | 2017-12-26 | 2018-06-12 | 安徽盛美金属科技有限公司 | A kind of high intensity temperature-measuring optical fiber grating sensor of transformer winding |
-
2014
- 2014-12-26 CN CN201420842309.0U patent/CN204389060U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104515622A (en) * | 2014-12-26 | 2015-04-15 | 国家电网公司 | Fiber bragg grating temperature measurement system of transformer |
| CN108151910A (en) * | 2017-12-26 | 2018-06-12 | 安徽盛美金属科技有限公司 | A kind of high intensity temperature-measuring optical fiber grating sensor of transformer winding |
| CN108151910B (en) * | 2017-12-26 | 2019-12-31 | 嘉善品智联科技有限公司 | High-strength temperature measurement fiber grating sensor for transformer winding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20151226 |
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| EXPY | Termination of patent right or utility model |