CN204925214U - Fiber current sensor - Google Patents
Fiber current sensor Download PDFInfo
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- CN204925214U CN204925214U CN201520644264.0U CN201520644264U CN204925214U CN 204925214 U CN204925214 U CN 204925214U CN 201520644264 U CN201520644264 U CN 201520644264U CN 204925214 U CN204925214 U CN 204925214U
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Abstract
The utility model provides a fiber current sensor includes in it and to be equipped with optical fiber sensing ring 2, the polarization maintaining fiber 4 of conductor 1 and to lie in the collection module 5 of outdoor case 6 rather than coaxial level, and the outer cladding of polarization maintaining fiber 4 is passed through polarization maintaining fiber 4 rather than coaxial 3, collection module 5 in insulator one end and is encircled 2 with optical fiber sensing and be connected, and the other end passes through telecommunication optical fiber 7 and is connected with merging cells 8. This fiber current sensor's collection module 5 sets up the outdoor case 6 of controlled temperature scope outward, makes collection module 5 work in certain temperature range, for collection module 5 has high measurement accuracy, the high reliability provides temperature environment the assurance, has lengthened the life who installs.
Description
Technical field
The utility model relates to a kind of mutual inductor, is specifically related to a kind of optical fiber current mutual inductor.
Background technology
Utilize the optical fiber current mutual inductor of Faraday rotation effect, the polarized light polarization direction of the sensing material transmission such as the magneto-optic glass in magnetic field or optical fiber can rotate because of magnetic field, rotation angle is Faraday angle of rotation, and angle of rotation is directly proportional to magnetic field intensity, and magnetic field is directly proportional to primary current.Optical fiber current mutual inductor has that measurement dynamic range is large, response is fast, bandwidth, electromagnetism interference performance are good, insulation system is simple, without blast, little, lightweight without second open circuit danger, volume, ac and dc current can be measured simultaneously, be convenient to be integrated into the medium advantage of other power equipment.
Optical fiber current mutual inductor be respectively protect in electric system, monitor, the eyes of the secondary device such as measurement, be usually installed on primary equipment place.In high voltage substation, optical fiber current mutual inductor is outdoor equipment, temperature on fiber current transformer performance, as there are larger impact in measuring accuracy, reliability, life-span etc.In each ingredient of optical fiber current mutual inductor, light path components and parts are very responsive to environment temperature.Like this as operating ambient temperature is unstable, can greatly reduce its serviceable life.The light path components and parts of optical fiber current mutual inductor are divided into two parts, are positioned at earthy light source-laser instrument, beam splitter, phase-modulator, coupling mechanism, optical fibre delay loop, photodetector and are positioned at the sensing fiber ring of noble potential.Carry the light source-laser instrument of built-in small semiconductor refrigerator, laser tube core temperature can be controlled in the temperature range of regulation.If variation of ambient temperature scope is large, change frequency is too fast, larger impact can be caused on the semiconductor cooler of built-in light-source undoubtedly, reduce serviceable life and refrigerating efficiency.
Utility model content
In order to overcome the above-mentioned defect of prior art, the utility model provides a kind of optical fiber current mutual inductor, the outdoor box 6 of control temperature scope is set outside the acquisition module 5 of this optical fiber current mutual inductor, acquisition module 5 is worked in certain temperature range, for acquisition module 5 there is high measuring accuracy, high reliability provide temperature environment ensure, extend the serviceable life of device.
For realizing above-mentioned utility model object, the technical scheme that the utility model is taked is:
A kind of optical fiber current mutual inductor, optical fiber current mutual inductor comprises the acquisition module 5 that level coaxial with it in it is provided with the Fibre Optical Sensor ring 2 of conductor 1, polarization maintaining optical fibre 4 and is positioned at outdoor box 6, the insulator 3 that described polarization maintaining optical fibre 4 outer cladding is coaxial with it, acquisition module 5 one end is connected with Fibre Optical Sensor ring 2 by polarization maintaining optical fibre 4, and the other end is connected with merge cells 8 by telecommunication optical fiber 7.
Preferably, Fibre Optical Sensor ring 2 is positioned at noble potential, arranges 5 ~ 15 circle sensor fibres in Fibre Optical Sensor ring 2, and sensor fibre is for protecting circular-polarization optical fiber.
Preferably, polarization maintaining optical fibre 4 two ends are connected with Fibre Optical Sensor ring 2 and acquisition module 5 respectively.
Preferably, insulator 3 is rigid support insulator or flexible compound insulator, rigid support insulator is followed successively by abutment ring 3-1, umbrella insulator 3-2 and base 3-3 from top to bottom, and Fibre Optical Sensor ring 2 is fixed in abutment ring 3-1 upper surface, and base 3-3 is arranged on outdoor box 6.
Preferably, acquisition module 5 is positioned at earth potential, acquisition module 5 comprises light path components and parts and circuit components, and light path components and parts comprise beam splitter, integrated phase modulator and photodetector, and circuit components comprises integrated circuit (IC) chip, operational amplifier, signal processor.
Preferably, outdoor box 6 comprises rectangular box body 6-1, chamber door 6-3 and case lock 6-13, casing 6-1 is connected by web member 6-2 with chamber door 6-3, casing 6-1 bottom surface and the hot side of refrigerator 6-7 that it is arranged are fitted, casing 6-1 and chamber door 6-3 inwall are sticked heat-insulation layer 6-4, casing 6-1 bottom surface heat-insulation layer 6-4 arranges well heater 6-6, and refrigerator 6-7 upper surface and well heater 6-6 upper surface and the dull and stereotyped 6-5 lower surface that it is arranged are fitted, and dull and stereotyped 6-5 are arranged acquisition module 5.
Preferably, web member 6-2 is hinge, and the upper surface of casing 6-1 and lower surface have the through hole 6-9 running through casing 6-1 surface and heat-insulation layer 6-4, and dull and stereotyped 6-5 is fixed on tank floor by adiabatic bolt 6-8.
Preferably, chamber door 6-3 inside surface arranges power supply 6-12, terminal block 6-11 and temperature controller 6-10.
When having electric current to flow through in conductor 1, in Fibre Optical Sensor ring 2 sensor fibre propagate orthogonal circular polarizations light left-hand polarization light and the right-handed polarized light magnetic fields that electric current produces in conductor 1 under, left-hand polarization light is contrary with the polarization direction anglec of rotation of right-handed polarized light, causes the phase differential of two-beam ripple.
Sensor fibre is a kind of special guarantor's circular polarization single-mode fiber core diameter 9/125us, and the polarization direction of polarized light is rotated with magnetic field, and the anglec of rotation is directly proportional to magnetic field intensity, i.e. line current is directly proportional.Left-hand polarization light is identical with the anglec of rotation size of right-handed polarized light, and direction is contrary.The end face of sensor fibre is that after two bundle polarized lights reflect by catoptron, left-hand polarization light becomes right-handed polarized light, and right-handed polarized light and left-hand polarization light.But because the direction in magnetic field also occurs oppositely relative to the direction of propagation of light beam, therefore the anglec of rotation doubles under the influence of a magnetic field.
Phase differential formula
In formula, V is Verdet constant, about 1urad/A;
N is the sensor fibre number of turn in Fibre Optical Sensor ring;
I is line current.
The phase differential that the number of turn then produces very little is less, the number of turn too much then temperature characterisitic be deteriorated.
Polarization maintaining optical fibre is a kind of special optical fiber grown up on single-mode fiber core diameter 9/125us basis.Birefringence in single-mode fiber is brought up to >10-5 magnitude, also known as high birefringence optical fiber.Apply to be made into as elliptical core type etc. or not rounded stress symmetric by the ovality increasing fibre core, utilize high birefringence, light wave polarization direction is controlled in a certain direction, realize protecting inclined.When it can ensure that linearly polarized light is propagated along feature axis of polarization maintaining optical fibre, do not have and couple light in another vertical with it feature axis.
Flexible compound insulator hang on the support member of horizontally disposed conductor 1 coaxial with it in Fibre Optical Sensor ring 2 and ring.
Telecommunication optical fiber 7 is the common multimode optical fiber of core diameter 62.5/125us, and the current value parsed by acquisition module 5, mutual inductor status information send to merge cells 8 with the form of digital quantity.
The data that different circuit, diverse location, different separate multiple optical fiber current mutual inductors collect gather by merge cells 8, send to electric power measuring device, proterctive equipment after packing.
The intensity of outdoor box casing 6-1 is enough large, and supporting insulator side's disposed thereon, polarization maintaining optical fibre 4 enters casing by the through hole of casing 6-1 upper surface.
Also can be arranged on concrete pedestal by supporting insulator, outdoor box is arranged on side.
Need below flexible compound insulator to avoid rocking with being bolted on concrete pedestal, outdoor box is arranged on side.
When outdoor box is arranged on side, enter casing after wavy metal protection of pipe polarization maintaining optical fibre 4 by having through hole bottom outdoor box, bottom opening improves casing water-resistant performance.
The through hole 6-9 of lower surface is opened in the position of bottom surface near chamber door 6-3, has 4, passes through for telecommunication optical fiber and cable, and the through hole 6-9 that end face is offered is opened in end face center, passes through for polarization maintaining optical fibre.
Heat-insulation layer 6-4 adopts glass fibre cotton+rigid poly urethanes foaming, increases thermal resistance, delays exchange heat.
Huyashi-chuuka (cold chinese-style noodles) and the hot side of semiconductor cooler are relative, relevant with the direction of current that it flows through, the change of direction of current, and huyashi-chuuka (cold chinese-style noodles) and hot side also exchange; Refrigerator 6-7 upper surface is huyashi-chuuka (cold chinese-style noodles).
Semiconductor cooler is applied to refrigeration occasion, and direction of current is fixed.
Semiconductor cooler only has the two states that do not work or freeze, and the drive current of refrigerating state is fixed, and circuit is simple and reliable.
Dull and stereotyped 6-5 adopts the aluminium alloy or copper that heat dispersion is good.
Adiabatic bolt 6-8 material is epoxy resin.
The mutual line will carrying out point distribution two intermodules at terminal block 6-11 to multiple module for power supply after power lead input is also transferred by terminal block.Such as wire between casing 6-1 and chamber door 6-3, carries out transferring through terminal block 6-11 and distributes.
Temperature controller 6-10 is two-in-one type, has two vice-nodes, and normally closed node control heating function, often opens node control refrigerating function, two vice-nodes is encapsulated together.
Low-temperature heat temperature value Tlow is set, high-temperature refrigeration temperature value Thigh; Change the setting value of temperature controller, just can change range of temperature in casing.
When detecting that in outdoor box 6, temperature is lower than Tlow, normally closed node closes, and often opens node and opens.220V voltage delivers to well heater 6-6 through the normally closed node of closure state, well heater 6-6 obtain electric after by dull and stereotyped 6-5, air in outdoor box 6 is heated.
When detecting that in outdoor box 6, temperature is higher than Thigh, the normally closed node of temperature controller 6-10 is opened, and often opens node and closes.220V voltage delivers to power supply adaptor 6-12 through the node of often opening of closure state, and the 220V voltage of input is reduced to the low dc voltage that refrigerator 6-7 is suitable for by power supply adaptor 6-12.Refrigerator 6-7 obtains electric rear refrigeration.
To detect in outdoor box 6 temperature higher than Tlow lower than Thigh time, the normally closed node of temperature controller 6-10 is opened, and often opens node and opens.
Temperature controller 6-10 also can be two independent temperature controllers, controls heating and refrigeration respectively.
Owing to have employed technique scheme, compared with prior art, the beneficial effects of the utility model comprise:
1. the optical fiber current mutual inductor in the utility model, the outdoor box 6 of control temperature scope is set outside acquisition module 5, acquisition module 5 is worked in certain temperature range, for acquisition module 5 there is high measuring accuracy, high reliability provide temperature environment ensure, extend the serviceable life of device.
2. the optical fiber current mutual inductor in the utility model, structure is simple, cost is low, easy construction, easily mounts and dismounts.
3. the optical fiber current mutual inductor in the utility model, outdoor box can A.T.C, for optical fiber current mutual inductor acquisition module provide suitable services temperature environment, improve serviceable life and the performance index of acquisition module.
4. the optical fiber current mutual inductor in the utility model, the control of outdoor box temperature is simple, non-maintaining, reliability is high.
5. the optical fiber current mutual inductor in the utility model, outdoor box insulation and temperature control combine.
6. the optical fiber current mutual inductor in the utility model, outdoor box adopts electric heater and semiconductor cooler carry out heating to air in casing and freeze, and do not have rotary part, reliability is high.
7. the optical fiber current mutual inductor in the utility model, outdoor box semiconductor cooler only has and does not work, or refrigeration two states, and under refrigerating state, drive current is fixed, and circuit is simple and reliable.
8. the optical fiber current mutual inductor in the utility model, the temperature controller of outdoor box, power module are arranged on outdoor chamber door, do not take the usage space in outdoor case.
Accompanying drawing explanation
Fig. 1 optical fiber current mutual inductor structural representation;
Fig. 2 outdoor box box-section figure;
Fig. 3 outdoor box door structure figure schematic diagram;
Wherein, 1-conductor, 2-Fibre Optical Sensor ring, 3-insulator, 4-polarization maintaining optical fibre, 5-acquisition module, 6-outdoor box, 7-telecommunication optical fiber, 8-merge cells, 6-1-casing, 6-2-web member, 6-3-chamber door, 6-4-heat-insulation layer, 6-5-is dull and stereotyped, 6-6-well heater, 6-7-refrigerator, the adiabatic bolt of 6-8-, 6-9-through hole, 6-10-temperature controller, 6-11-terminal block, 6-12-power supply adaptor, 6-13-case is locked.
Embodiment
Below in conjunction with example, the utility model is described in detail.
Embodiment 1:
As shown in Figure 1, a kind of optical fiber current mutual inductor, optical fiber current mutual inductor comprises the acquisition module 5 that level coaxial with it in it is provided with the Fibre Optical Sensor ring 2 of conductor 1, polarization maintaining optical fibre 4 and is positioned at outdoor box 6, the insulator 3 that polarization maintaining optical fibre 4 outer cladding is coaxial with it, acquisition module 5 one end is connected with Fibre Optical Sensor ring 2 by polarization maintaining optical fibre 4, and the other end is connected with merge cells 8 by telecommunication optical fiber 7.
Fibre Optical Sensor ring 2 is positioned at noble potential, arranges 10 circle sensor fibres in Fibre Optical Sensor ring 2, and sensor fibre is for protecting circular-polarization optical fiber.
Polarization maintaining optical fibre 4 two ends are connected with Fibre Optical Sensor ring 2 and acquisition module 5 respectively.
Insulator 3 is rigid support insulator or flexible compound insulator, and rigid support insulator is followed successively by abutment ring 3-1, umbrella insulator 3-2 and base 3-3 from top to bottom, and Fibre Optical Sensor ring 2 is fixed in abutment ring 3-1 upper surface, and base 3-3 is arranged on outdoor box 6.
Acquisition module 5 is positioned at earth potential, and acquisition module 5 comprises light path components and parts and circuit components, and light path components and parts comprise beam splitter, integrated phase modulator and photodetector, and circuit components comprises integrated circuit (IC) chip, operational amplifier, signal processor.
Outdoor box 6 comprises rectangular box body 6-1, chamber door 6-3 and case lock 6-13, casing 6-1 is connected by web member 6-2 with chamber door 6-3, casing 6-1 bottom surface and the hot side of refrigerator 6-7 that it is arranged are fitted, casing 6-1 and chamber door 6-3 inwall are sticked heat-insulation layer 6-4, casing 6-1 bottom surface heat-insulation layer 6-4 arranges well heater 6-6, refrigerator 6-7 upper surface and well heater 6-6 upper surface and the dull and stereotyped 6-5 lower surface that it is arranged are fitted, and dull and stereotyped 6-5 are arranged acquisition module 5.
Web member 6-2 is hinge, and the upper surface of casing 6-1 and lower surface have the through hole 6-9 running through casing 6-1 surface and heat-insulation layer 6-4, and dull and stereotyped 6-5 is fixed on tank floor by adiabatic bolt 6-8.
Chamber door 6-3 inside surface arranges power supply 6-12, terminal block 6-11 and temperature controller 6-10.
When having electric current to flow through in conductor 1, in Fibre Optical Sensor ring 2 sensor fibre propagate orthogonal circular polarizations light left-hand polarization light and the right-handed polarized light magnetic fields that electric current produces in conductor 1 under, left-hand polarization light is contrary with the polarization direction anglec of rotation of right-handed polarized light, causes the phase differential of two-beam ripple.
Sensor fibre is a kind of special guarantor's circular polarization single-mode fiber core diameter 9/125us, and the polarization direction of polarized light is rotated with magnetic field, and the anglec of rotation is directly proportional to magnetic field intensity, i.e. line current is directly proportional.Left-hand polarization light is identical with the anglec of rotation size of right-handed polarized light, and direction is contrary.The end face of sensor fibre is that after two bundle polarized lights reflect by catoptron, left-hand polarization light becomes right-handed polarized light, and right-handed polarized light and left-hand polarization light.But because the direction in magnetic field also occurs oppositely relative to the direction of propagation of light beam, therefore the anglec of rotation doubles under the influence of a magnetic field.
Phase differential formula
In formula, V is Verdet constant, about 1urad/A;
N is the sensor fibre number of turn in Fibre Optical Sensor ring;
I is line current.
The phase differential that the number of turn then produces very little is less, the number of turn too much then temperature characterisitic be deteriorated.
Polarization maintaining optical fibre is a kind of special optical fiber grown up on single-mode fiber core diameter 9/125us basis.Birefringence in single-mode fiber is brought up to >10-5 magnitude, also known as high birefringence optical fiber.Apply to be made into as elliptical core type etc. or not rounded stress symmetric by the ovality increasing fibre core, utilize high birefringence, light wave polarization direction is controlled in a certain direction, realize protecting inclined.When it can ensure that linearly polarized light is propagated along feature axis of polarization maintaining optical fibre, do not have and couple light in another vertical with it feature axis.
Flexible compound insulator hang on the support member of horizontally disposed conductor 1 coaxial with it in Fibre Optical Sensor ring 2 and ring.
Telecommunication optical fiber 7 is the common multimode optical fiber of core diameter 62.5/125us, and the current value parsed by acquisition module 5, mutual inductor status information send to merge cells 8 with the form of digital quantity.
The data that different circuit, diverse location, different separate multiple optical fiber current mutual inductors collect gather by merge cells 8, send to electric power measuring device, proterctive equipment after packing.
The intensity of outdoor box casing 6-1 is enough large, and supporting insulator side's disposed thereon, polarization maintaining optical fibre 4 enters casing by the through hole of casing 6-1 upper surface.
Also can be arranged on concrete pedestal by supporting insulator, outdoor box is arranged on side.
Need below flexible compound insulator to avoid rocking with being bolted on concrete pedestal, outdoor box is arranged on side.
When outdoor box is arranged on side, enter casing after wavy metal protection of pipe polarization maintaining optical fibre 4 by having through hole bottom outdoor box, bottom opening improves casing water-resistant performance.
The through hole 6-9 of lower surface is opened in the position of bottom surface near chamber door 6-3, has 4, passes through for telecommunication optical fiber and cable, and the through hole 6-9 that end face is offered is opened in end face center, passes through for polarization maintaining optical fibre.
Heat-insulation layer 6-4 adopts glass fibre cotton+rigid poly urethanes foaming, increases thermal resistance, delays exchange heat.
Huyashi-chuuka (cold chinese-style noodles) and the hot side of semiconductor cooler are relative, relevant with the direction of current that it flows through, the change of direction of current, and huyashi-chuuka (cold chinese-style noodles) and hot side also exchange; Refrigerator 6-7 upper surface is huyashi-chuuka (cold chinese-style noodles).
Semiconductor cooler is applied to refrigeration occasion, and direction of current is fixed.
Semiconductor cooler only has the two states that do not work or freeze, and the drive current of refrigerating state is fixed, and circuit is simple and reliable.
Dull and stereotyped 6-5 adopts the aluminium alloy or copper that heat dispersion is good.
Adiabatic bolt 6-8 material is epoxy resin.
The mutual line will carrying out point distribution two intermodules at terminal block 6-11 to multiple module for power supply after power lead input is also transferred by terminal block.Such as wire between casing 6-1 and chamber door 6-3, carries out transferring through terminal block 6-11 and distributes.
Temperature controller 6-10 is two-in-one type, has two vice-nodes, and normally closed node control heating function, often opens node control refrigerating function, two vice-nodes is encapsulated together.
Low-temperature heat temperature value Tlow is set, high-temperature refrigeration temperature value Thigh; Change the setting value of temperature controller, just can change range of temperature in casing.
When detecting that in outdoor box 6, temperature is lower than Tlow, normally closed node closes, and often opens node and opens.220V voltage delivers to well heater 6-6 through the normally closed node of closure state, well heater 6-6 obtain electric after by dull and stereotyped 6-5, air in outdoor box 6 is heated.
When detecting that in outdoor box 6, temperature is higher than Thigh, the normally closed node of temperature controller 6-10 is opened, and often opens node and closes.220V voltage delivers to power supply adaptor 6-12 through the node of often opening of closure state, and the 220V voltage of input is reduced to the low dc voltage that refrigerator 6-7 is suitable for by power supply adaptor 6-12.Refrigerator 6-7 obtains electric rear refrigeration.
To detect in outdoor box 6 temperature higher than Tlow lower than Thigh time, the normally closed node of temperature controller 6-10 is opened, and often opens node and opens.
Temperature controller 6-10 also can be two independent temperature controllers, controls heating and refrigeration respectively.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or equivalent replacement, and not departing from any amendment of spirit and scope of the invention or equivalent replacement, it all should be encompassed in the middle of right of the present invention.
Claims (8)
1. an optical fiber current mutual inductor, it is characterized in that: described optical fiber current mutual inductor comprises the acquisition module (5) that level coaxial with it in it is provided with the Fibre Optical Sensor ring (2) of conductor (1), polarization maintaining optical fibre (4) and is positioned at outdoor box (6), the insulator (3) that described polarization maintaining optical fibre (4) outer cladding is coaxial with it, described acquisition module (5) one end is connected with Fibre Optical Sensor ring (2) by polarization maintaining optical fibre (4), and the other end is connected with merge cells (8) by telecommunication optical fiber (7).
2. a kind of optical fiber current mutual inductor as claimed in claim 1, it is characterized in that: described Fibre Optical Sensor ring (2) is positioned at noble potential, arrange 5 ~ 15 circle sensor fibres in described Fibre Optical Sensor ring (2), described sensor fibre is for protecting circular-polarization optical fiber.
3. a kind of optical fiber current mutual inductor as claimed in claim 1, is characterized in that: described polarization maintaining optical fibre (4) two ends are connected with Fibre Optical Sensor ring (2) and acquisition module (5) respectively.
4. a kind of optical fiber current mutual inductor as claimed in claim 1, it is characterized in that: described insulator (3) is rigid support insulator or flexible compound insulator, described rigid support insulator is followed successively by abutment ring (3-1), umbrella insulator (3-2) and base (3-3) from top to bottom, described Fibre Optical Sensor ring (2) is fixed in abutment ring (3-1) upper surface, and described base (3-3) is arranged on described outdoor box (6).
5. a kind of optical fiber current mutual inductor as claimed in claim 1, it is characterized in that: described acquisition module (5) is positioned at earth potential, described acquisition module (5) comprises light path components and parts and circuit components, described light path components and parts comprise beam splitter, integrated phase modulator and photodetector, and described circuit components comprises integrated circuit (IC) chip, operational amplifier, signal processor.
6. a kind of optical fiber current mutual inductor as claimed in claim 1, it is characterized in that: described outdoor box (6) comprises rectangular box body (6-1), chamber door (6-3) and case lock (6-13), described casing (6-1) is connected by web member (6-2) with chamber door (6-3), described casing (6-1) bottom surface and the hot side of refrigerator (6-7) that it is arranged are fitted, described casing (6-1) and chamber door (6-3) inwall are sticked heat-insulation layer (6-4), described casing (6-1) bottom surface heat-insulation layer (6-4) is arranged well heater (6-6), described refrigerator (6-7) upper surface and well heater (6-6) upper surface and flat board (6-5) lower surface that it is arranged are fitted, described flat board (6-5) is arranged acquisition module (5).
7. a kind of optical fiber current mutual inductor as claimed in claim 6, it is characterized in that: described web member (6-2) is hinge, the upper surface of described casing (6-1) and lower surface have the through hole (6-9) running through casing (6-1) surface and heat-insulation layer (6-4), and described flat board (6-5) is fixed on tank floor by adiabatic bolt (6-8).
8. a kind of optical fiber current mutual inductor as claimed in claim 6, is characterized in that: described chamber door (6-3) inside surface arranges power supply (6-12), terminal block (6-11) and temperature controller (6-10).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520644264.0U CN204925214U (en) | 2015-08-25 | 2015-08-25 | Fiber current sensor |
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| CN201520644264.0U CN204925214U (en) | 2015-08-25 | 2015-08-25 | Fiber current sensor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841740A (en) * | 2017-01-24 | 2017-06-13 | 国网辽宁省电力有限公司盘锦供电公司 | A kind of anti-interference type all-fiber current transformator |
| CN107132862A (en) * | 2017-05-18 | 2017-09-05 | 国网辽宁省电力有限公司盘锦供电公司 | All-fiber current transformator secondary acquisition device thermostatic control system |
| CN110531141A (en) * | 2019-09-24 | 2019-12-03 | 国网重庆市电力公司电力科学研究院 | A kind of sub- voltage sensor system of Intelligent insulation |
| CN111721975A (en) * | 2020-08-03 | 2020-09-29 | 北京世维通光智能科技有限公司 | Optical fiber current sensor measuring instrument case |
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2015
- 2015-08-25 CN CN201520644264.0U patent/CN204925214U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841740A (en) * | 2017-01-24 | 2017-06-13 | 国网辽宁省电力有限公司盘锦供电公司 | A kind of anti-interference type all-fiber current transformator |
| CN107132862A (en) * | 2017-05-18 | 2017-09-05 | 国网辽宁省电力有限公司盘锦供电公司 | All-fiber current transformator secondary acquisition device thermostatic control system |
| CN110531141A (en) * | 2019-09-24 | 2019-12-03 | 国网重庆市电力公司电力科学研究院 | A kind of sub- voltage sensor system of Intelligent insulation |
| CN111721975A (en) * | 2020-08-03 | 2020-09-29 | 北京世维通光智能科技有限公司 | Optical fiber current sensor measuring instrument case |
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Inventor after: Cui Hubao Inventor after: Sun Haijiang Inventor after: Chen Shuo Inventor after: Hou Jibiao Inventor after: Zheng Tianxiang Inventor after: Yuan Ting Inventor after: Zhang He Inventor after: Wang Shuo Inventor before: Cui Hubao Inventor before: Sun Haijiang Inventor before: Chen Shuo Inventor before: Hou Jibiao Inventor before: Zheng Tianxiang |
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Effective date of registration: 20160414 Address after: 102211 Beijing city Changping District Xiaotangshan town big East Village Road No. 270 (future technology city) Patentee after: State Grid Smart Grid Institute Patentee after: Panjin Power Supply Company, State Grid Liaoning Electric Power Co., Ltd. Patentee after: State Grid Corporation of China Address before: 102211 Beijing city Changping District Xiaotangshan town big East Village Road No. 270 (future technology city) Patentee before: State Grid Smart Grid Institute Patentee before: State Grid Corporation of China |