CN204154888U - A kind of all-fiber current transformator sensing ring device for detecting performance - Google Patents
A kind of all-fiber current transformator sensing ring device for detecting performance Download PDFInfo
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- CN204154888U CN204154888U CN201420419376.1U CN201420419376U CN204154888U CN 204154888 U CN204154888 U CN 204154888U CN 201420419376 U CN201420419376 U CN 201420419376U CN 204154888 U CN204154888 U CN 204154888U
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- optical fibre
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- photodetector
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- sensing ring
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- 239000000835 fiber Substances 0.000 title claims abstract description 34
- 239000013307 optical fiber Substances 0.000 claims abstract description 66
- 238000012545 processing Methods 0.000 claims abstract description 19
- 238000003466 welding Methods 0.000 claims abstract description 16
- 230000010287 polarization Effects 0.000 claims description 14
- 230000003287 optical effect Effects 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 4
- 230000004043 responsiveness Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000005693 optoelectronics Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000007499 fusion processing Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 2
- 241000662429 Fenerbahce Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model is a kind of all-fiber current transformator sensing ring device for detecting performance.Comprise: light source, 2 × 2 monomode couplers, photodetector, signal processing unit, pilot lamp, first joints of optical fibre, ring flange, second joints of optical fibre; The output tail optical fiber of light source and an input end of 2 × 2 monomode couplers are with 0 ° of welding, another input end of 2 × 2 monomode couplers and photodetector are with 0 ° of welding, an output terminal of 2 × 2 monomode couplers and the input end of first joints of optical fibre are with 0 ° of welding, and another output terminal does not connect; The output terminal of first joints of optical fibre is docked with second joints of optical fibre by ring flange.The beneficial effects of the utility model are: 1, pick-up unit have that volume is little, lightweight, structure is simple, cost is low, stable performance and being easy to carry; 2, detection method facilitates simple and direct, workable; When 3, using, the output port of pick-up unit can be directly connected with sensing ring by ring flange, without the need to other fusion process.
Description
Technical field
The utility model relates to all-fiber current transformator pick-up unit, is specifically related to a kind of all-fiber current transformator sensing ring device for detecting performance.
Technical background
The current sensor of conventional electromagnetic, owing to there is magnetic saturation problem, is difficult to realize the accurate measurement of electric current on a large scale, cannot meets the measurement demand of intelligent grid.And all-fiber current sensor structure is simple; there is very wide dynamic range; the demand of measurement and relay protection can be realized simultaneously; the danger such as inflammable, the explosive that the current sensor that also avoid conventional electromagnetic produces because of oil-filled; there is high security; in addition, it has that frequency response range is wide, widely applicable, environmental protection, meets the features such as electric-power metering digitizing and THE TRENDS OF DEVELOPMENT IN AUTOMATION.Along with the propelling that intelligent grid is built, all-fiber current transformator is all widely used in intelligent substation and extra-high voltage direct-current engineering.
All-fiber current transformator forms primarily of the electric unit of on high-tension side sensing ring and low-pressure side, sensing ring is connected by polarization maintaining optical fibre with electric unit, STRESS VARIATION, vibration etc. are more responsive to external world for the performance of this section of polarization maintaining optical fibre, and when being squeezed or bending, easy fracture damages.Sensing ring is made up of optical device such as sensor fibre, quarter-wave plate, catoptrons, is all connected by fused fiber splice.
At present, all-fiber current transformator mainly applies transformer neutral point and gap point protection, the Cubicle Gas-Insulated Switchgear GIS of intelligent substation, the fields such as column support type insulator AIS.In practical engineering application, be convenient to site operation and installation, need guarantor's off-delay optical fiber of all-fiber current transformator to disconnect, sensing ring is separated with electric unit; Then, sensing ring and electric unit are arranged on high-pressure side and low-pressure side respectively, by polarization maintaining optical fibre welding, the two are connected; Finally, all-fiber current transformator system debug and demarcation is carried out.But on-the-spot severe construction environment, easily makes guarantor's off-delay optical fiber fracture and sensing ring damages, and causes system light path fault, cannot work, need again to dismantle and install sensing ring, can reduce work efficiency like this and bring very large economic loss.After intelligent substation puts into operation, the sensing ring Performance Detection and the breakdown judge that are positioned at position, high-pressure side are cumbersome.Therefore, for all-fiber current transformator in the problem that runs into of engineer applied scene, be necessary little, lightweight, the with low cost and portable sensing ring device for detecting performance of exploitation volume, meet the demand of practical engineering application.
Utility model content
Utility model object
The utility model object is the problem for running in the processes such as all-fiber current transformator engineer applied in-site installation, debugging and operational process maintenance, a kind of all-fiber current transformator sensing ring device for detecting performance and method are provided, this installation cost is cheap, volume is little, lightweight, be easy to carry, onsite application is easy to operate.
Technical scheme
The utility model is a kind of device for detecting performance of all-fiber current transformator sensing ring, the sensing ring being connected with polarization maintaining optical fibre is detected, wherein, comprising: light source, 2 × 2 monomode couplers, photodetector, signal processing unit, pilot lamp, first joints of optical fibre, ring flange, second joints of optical fibre;
The output tail optical fiber of light source and an input end of 2 × 2 monomode couplers are with 0 ° of welding, another input end of 2 × 2 monomode couplers and photodetector are with 0 ° of welding, an output terminal of 2 × 2 monomode couplers and the input end of first joints of optical fibre are with 0 ° of welding, and another output terminal does not connect; The output terminal of first joints of optical fibre is docked with second joints of optical fibre by ring flange;
Second joints of optical fibre connect polarization maintaining optical fibre and sensing ring; The output terminal of photodetector is connected to the input end of signal processing unit, and the output terminal of signal processing unit connects a pilot lamp, and signal processing unit carries out opto-electronic conversion.
The device for detecting performance of a kind of all-fiber current transformator sensing ring as above, wherein, described light source is semiconductor laser, and Output optical power is 100mW, and adopts 5V storage battery power supply; The splitting ratio of 2 × 2 monomode couplers is 1:1, and added losses are at below 0.5dB; Photodetector adopts Si-PIN photodiode, and responsiveness is greater than 0.8mA/mW; Described signal processing unit according to obtain photodetector light intensity magnitude and differentiate, when the light intensity of photodetector is greater than 5mW, make pilot lamp bright; When the light intensity of photodetector is less than 5mW, make pilot lamp dark.
Beneficial effect
The beneficial effects of the utility model are: 1, pick-up unit have that volume is little, lightweight, structure is simple, cost is low, stable performance and being easy to carry; 2, detection method facilitates simple and direct, workable; When 3, using, the output port of pick-up unit can be directly connected with sensing ring by ring flange, without the need to other fusion process.
Accompanying drawing explanation
Fig. 1 is all-fiber current transformator sensing ring device for detecting performance structured flowchart.
Wherein, 1-light source, 2-2 × 2 monomode coupler, 3-photodetector, 4-signal processing unit, 5-pilot lamp, the 6-joints of optical fibre, 7-ring flange, the 8-joints of optical fibre, 9-polarization maintaining optical fibre, 10-sensing ring.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further.
Sensing ring described in the utility model is the sensitive part of all-fiber current transformator, is generally positioned at transformer station's high pressure side, not easily carries out overhauling and dismantling.Described sensing ring device for detecting performance has the advantages such as volume is little, lightweight, with low cost, and detection method is easy to operation.Below in conjunction with accompanying drawing, embodiment of the present utility model is further described.
As shown in Figure 1, the device for detecting performance of all-fiber current transformator sensing ring described in the utility model comprises: light source 1,2 × 2 monomode coupler 2, photodetector 3, signal processing unit 4, pilot lamp 5, first joints of optical fibre 6, ring flange 7, second joints of optical fibre 8.
Above-mentioned detection device is tested for all-fiber current transformator sensing ring, and the test point that all-fiber current transformator sensing ring can access is the sensing ring 10 being connected with polarization maintaining optical fibre 9.
The output tail optical fiber of light source 1 and an input end of 2 × 2 monomode couplers 2 are with 0 ° of welding, another input end of 2 × 2 monomode couplers 2 and photodetector 3 are with 0 ° of welding, an output terminal of 2 × 2 monomode couplers 2 and the input end of first joints of optical fibre 6 are with 0 ° of welding, and another output terminal does not connect.The output terminal of first joints of optical fibre 6 is docked with second joints of optical fibre 8 by ring flange 7.
Second joints of optical fibre 8 are connected with polarization maintaining optical fibre 9 and sensing ring 10.The output terminal of photodetector 3 is connected to the input end of signal processing unit 4, and the output terminal of signal processing unit 4 connects a pilot lamp 5.
The technical scheme of the device for detecting performance of all-fiber current transformator sensing ring described in the utility model is as follows: the light that light source 1 sends is after 2 × 2 monomode couplers 2 and the transmission of first joints of optical fibre 6, by ring flange 7, second joints of optical fibre 8 are entered in optically-coupled, transfer to sensing ring 10 through polarization maintaining optical fibre 9 again, light is returned by the fiber reflector reflection Hou Guangyanyuan road in sensing ring 10.Finally, the light returned is coupled into photodetector 3 by 2 × 2 monomode couplers 2, is processed the light intensity magnitude returned by signal processing unit 4, thus controls the bright and dark of pilot lamp 5.
Described light source 1 selects large-power semiconductor laser instrument, and light source 1 described in the utility model is semiconductor laser, and Output optical power is 100mW, and adopts 5V storage battery power supply, has the advantages such as volume is little, cost is low, luminous power is large; The wavelength exporting light is 850nm, and ensures that output power is at about 100mW, and the splitting ratio of 2 × 2 monomode couplers 2 is 1:1, and added losses are at below 0.5dB.
Photodetector 3 adopts Si-PIN photodiode, and responsiveness is greater than 0.8mA/mW.Described signal processing unit 4 is according to the light intensity magnitude of the photodetector 3 obtained and differentiate, thus effectively controls the secretly bright of pilot lamp 5.When the light intensity of photodetector 3 is greater than 5mW, pilot lamp is bright; When the light intensity of photodetector 3 is less than 5mW, pilot lamp is dark, now proves that the optical fiber of polarization maintaining optical fibre 9 and sensing ring 10 inside has fracture or device failure to make light path obstructed.
Described first joints of optical fibre 6 and ring flange 7 adopt integrative packaging, employing pluggable mode is fixed, the connector of first joints of optical fibre 6 selects FC/PC model, is directly connected, without the need to other fusion process with the FC/PC type connector of other optical fibre device by ring flange 7.Described second joints of optical fibre 8 select movable fiber adapter head to be made, and end face selects FC/PC type, are connected by sensing ring 10 by polarization maintaining optical fibre 9 with first joints of optical fibre 6.
As shown in Figure 1, the output tail optical fiber of light source 1 and the input end of 2 × 2 monomode couplers 2 are with 0 ° of welding, and the other end and photodetector 3 are with 0 ° of welding, and an output terminal of 2 × 2 monomode couplers 2 and the input end of first joints of optical fibre 6 are with 0 ° of welding.The output terminal of first joints of optical fibre 6 is docked with second joints of optical fibre 8 by ring flange 7.Second joints of optical fibre 8 are connected with polarization maintaining optical fibre 9 and sensing ring 10.The output terminal of photodetector 3 is connected to the input end of signal processing unit 4, and the output terminal of signal processing unit 4 connects a pilot lamp 5.
The method for testing performance of all-fiber current transformator sensing ring described in the utility model is as follows: the first step; the outer layer protective sleeve of polarization maintaining optical fibre is divested with scissors; divest pincers with optical fiber again and peel off coat; about about 30-40mm; hold optical fiber properly; in order to avoid damage naked fibre; and the ceramic contact pin center penetrated in second joints of optical fibre 8; ensure that naked fibre exposes end face and is about 5-10cm, then expose the naked fibre of end face with the fiber slide pen of adamas material along the parallel cutting of end face of second joints of optical fibre 8.Second joints of optical fibre 8 are inserted in ring flange 7 and dock with first joints of optical fibre 6 by second step.3rd step, starts light source 1, viewing lamp 5 secretly bright, differentiate the performance quality of sensing ring 10, pilot lamp is bright then illustrates that sensing ring 10 is functional, and pilot lamp secretly then illustrates sensing ring 10 light path fault, internal optical fiber fracture or device failure, obtain and again change sensing ring 10.4th step, repeats above-mentioned three steps, carries out repeated detection.
Although be described in detail a kind of all-fiber current transformator sensing ring device for detecting performance described in the utility model by above-described embodiment, but above-mentioned explanation is not to restriction of the present utility model, in the scope not departing from purport of the present utility model, various distortion and change can be carried out, such as, optimized method can be selected in the various methods of prior art.
Claims (2)
1. the device for detecting performance of an all-fiber current transformator sensing ring, the sensing ring (10) being connected with polarization maintaining optical fibre (9) is detected, it is characterized in that, comprising: light source (1), 2 × 2 monomode couplers (2), photodetector (3), signal processing unit (4), pilot lamp (5), first joints of optical fibre (6), ring flange (7), second joints of optical fibre (8);
The output tail optical fiber of light source (1) and an input end of 2 × 2 monomode couplers (2) are with 0 ° of welding, another input end of 2 × 2 monomode couplers (2) and photodetector (3) are with 0 ° of welding, an output terminal of 2 × 2 monomode couplers (2) and the input end of first joints of optical fibre (6) are with 0 ° of welding, and another output terminal does not connect; The output terminal of first joints of optical fibre (6) is docked with second joints of optical fibre (8) by ring flange (7);
Second joints of optical fibre (8) connect polarization maintaining optical fibre (9) and sensing ring (10); The output terminal of photodetector (3) is connected to the input end of signal processing unit (4), the output terminal of signal processing unit (4) connects a pilot lamp (5), and signal processing unit (4) carries out opto-electronic conversion.
2. the device for detecting performance of a kind of all-fiber current transformator sensing ring as claimed in claim 1, it is characterized in that, described light source (1) is semiconductor laser, and Output optical power is 100mW, and adopts 5V storage battery power supply; The splitting ratio of 2 × 2 monomode couplers (2) is 1:1, and added losses are at below 0.5dB; Photodetector (3) adopts Si-PIN photodiode, and responsiveness is greater than 0.8mA/mW; Described signal processing unit (4) according to obtain photodetector (3) light intensity magnitude and differentiate, when the light intensity of photodetector (3) is greater than 5mW, make pilot lamp (5) bright; When the light intensity of photodetector (3) is less than 5mW, make pilot lamp (5) dark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420419376.1U CN204154888U (en) | 2014-07-28 | 2014-07-28 | A kind of all-fiber current transformator sensing ring device for detecting performance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420419376.1U CN204154888U (en) | 2014-07-28 | 2014-07-28 | A kind of all-fiber current transformator sensing ring device for detecting performance |
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| CN204154888U true CN204154888U (en) | 2015-02-11 |
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| CN201420419376.1U Expired - Lifetime CN204154888U (en) | 2014-07-28 | 2014-07-28 | A kind of all-fiber current transformator sensing ring device for detecting performance |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106842420A (en) * | 2017-01-24 | 2017-06-13 | 帕哈提·吾买尔 | One kind verifies tail fiber device |
| CN109765415A (en) * | 2017-11-09 | 2019-05-17 | 许继集团有限公司 | A kind of current transformer with optical path |
| CN110646657A (en) * | 2018-06-26 | 2020-01-03 | 北京自动化控制设备研究所 | Low-humidity sensitive optical fiber current transformer |
| CN113933559A (en) * | 2021-12-16 | 2022-01-14 | 北京世维通光智能科技有限公司 | Optical fiber current sensor |
-
2014
- 2014-07-28 CN CN201420419376.1U patent/CN204154888U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106842420A (en) * | 2017-01-24 | 2017-06-13 | 帕哈提·吾买尔 | One kind verifies tail fiber device |
| CN109765415A (en) * | 2017-11-09 | 2019-05-17 | 许继集团有限公司 | A kind of current transformer with optical path |
| CN110646657A (en) * | 2018-06-26 | 2020-01-03 | 北京自动化控制设备研究所 | Low-humidity sensitive optical fiber current transformer |
| CN113933559A (en) * | 2021-12-16 | 2022-01-14 | 北京世维通光智能科技有限公司 | Optical fiber current sensor |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20150211 |
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| CX01 | Expiry of patent term |