CN203249709U - Optical fiber temperature sensor used for oil-immersed transformer winding - Google Patents
Optical fiber temperature sensor used for oil-immersed transformer winding Download PDFInfo
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- CN203249709U CN203249709U CN201320093688.3U CN201320093688U CN203249709U CN 203249709 U CN203249709 U CN 203249709U CN 201320093688 U CN201320093688 U CN 201320093688U CN 203249709 U CN203249709 U CN 203249709U
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Abstract
An optical fiber temperature sensor used for an oil-immersed transformer winding is characterized in that the optical fiber temperature sensor is composed of two protective tubes, two fixing caps and a transmission optical fiber; a fiber grating is arranged in the transmission optical fiber, and the two protective tubes are connected with the two fixing caps respectively; the two protective tubes are hollow, one of the fixing caps is equipped with a central through hole, and the other fixing cap is equipped with a groove; the transmission optical fiber penetrates from the central through hole of one protective tube, then penetrates the central through hole of one fixing cap to enter in the other one protective tube, and then enters in the other fixing cap via the groove connecting the protective tube and the other fixing cap. All parts are connected via one or the combination of the mechanical connection, the bonding agent connection and the welding connection. The advantage of the utility model is that the optical fiber temperature sensor used for the oil-immersed transformer winding is simple in package, convenient in installation and interchange, has no error, has no temperature drift during the long-term running process, and does not need to be calibrated again.
Description
Technical field
The utility model relates to the fiber grating sensing technology field, relates to a kind of temperature sensor based on fiber grating, relate in particular to a kind of under electric hyperbaric environment the oil-filled transformer winding fibre optic temperature sensor of thermometric.
Background technology
Power equipment is subjected to the factor affecting such as electricity, heat, physical environment, long-term work, overwork in operational process, easily cause ageing equipment, hydraulic performance decline, and reliability reduces, even jeopardizes the security of system operation.Because of loose contact, contact resistance increases, and causes contact temperature rise too high, causes the accidents such as fire, blast such as positions such as transformer, switch cubicle, ring main unit contact or cable splices.Therefore, be necessary to power equipment carry out in real time, on-line monitoring, in time find fault, accident is eliminated in bud extension device serviceable life.The general sensor that adopts carries out safety monitoring to its power equipment.
Yet traditional temperature sensor can not satisfy simultaneously stability, permanance, both Pasting also can imbed, the requirement such as distributed on-line data acquisition.Fiber grating is a kind of well behaved temperature-sensing element, no matter at technology maturity, or has all obtained the breakthrough of essence on the cost.The major advantage that fiber grating is used for temperature sensing is embodied in: be not subjected to electromagnetic interference (EMI), electrical insulating property is good; Good endurance; Quality is light, volume is light, little to structure influence, be easy to arrange; Both can realize point measurement; Absolute measurement; Save circuit, only just can transmit the state of temperature signal with single line; But signal, data multipath transmission are convenient to be connected with computing machine, and signal attenuation is little on the unit length; Highly sensitive, precision is high; Bandwidth, signal to noise ratio (S/N ratio) is high.Therefore, Fiber Bragg Grating technology has broad application prospects.Consider that bare optical fibers and bare optical gratings is fragile especially, especially shear resistance is relatively poor, directly it can't be competent at sensor as temperature sensor lays and abominable Service Environment, therefore, bare optical fibers and bare optical gratings is carried out encapsulation process, is the inevitable link that fiber grating is applied as temperature sensor.
Traditional temp measuring method generally has thermopair/thermal resistance of being installed in point for measuring temperature or temperature measuring equipment, the infrared temperature measurement apparatus of some point type that manual inspection etc. is arranged in the power industry, these methods are because self temperature-measurement principle is limit the defective that exists inevitably some to overcome, as reflecting the temperature conditions of local location, test specification is limited; Installing space there is requirement, loaded down with trivial details and unreliable; Be subject to electromagnetic interference (EMI), affect precision etc.Therefore traditional temp measuring method and equipment can't satisfy the chemical environment that adapts to various harshnesses in the power industry, are not subjected to the advantage of electromagnetic interference (EMI), can directly contact various contacts, the tie point of electrical equipment, are used for the temperature monitoring demand of perception present position.
The utility model content
The purpose of this utility model provides a kind of oil-filled transformer winding fibre optic temperature sensor, and this structure adapts to the chemical environment of various harshnesses, is not subjected to electromagnetic interference (EMI); Size is little, easily is installed to the position that traditional thermometric is difficult to arrive; Design has in use that easy installation, optical-fibre communications insertion loss are low, good airproof performance; Can directly contact various contacts, the tie point of electrical equipment, be used for the functions such as temperature monitoring of perception present position.
The utility model provides a kind of oil-filled transformer winding fibre optic temperature sensor, it is characterized in that: this fibre optic temperature sensor is by two protection tubes, and two locking caps and Transmission Fibers consist of; Be provided with fiber grating in the described Transmission Fibers; Described two protection tubes are connected with two locking caps respectively, and described two protection tubes are hollow form; Be provided with central through hole in described one of them locking cap; be provided with groove in another locking cap; the central through hole that Transmission Fibers penetrates from the central through hole of a protection tube by a locking cap enters in another protection tube; enter in this locking cap by in this protection tube and the groove that another locking cap links to each other afterwards, a kind of or its combination between all parts by mechanical connection, bonding agent connection, in being welded to connect is formed by connecting.
Described two tin hats are respectively front end locking cap and rear end locking cap, and described two protection tubes are respectively middle-end protection tube and tail optical fiber protection tube; In the front end locking cap, be provided with groove, in the tail optical fiber protection tube, be provided with central through hole.。
A kind of connection the between described front-end protection cap and the middle-end protection tube by machinery, bonding agent, in being welded to connect; A kind of connection the between described rear end tin hat and the middle-end protection tube by machinery, bonding agent, in being welded to connect.。
In the middle-end protection tube, be provided with the high-temperature insulation material layer; Be provided with perforate at the middle-end protection tube.
A kind of connection the between described Transmission Fibers and the tail optical fiber protection tube by machinery, bonding agent, in being welded to connect; A kind of connection the between described tail optical fiber protection tube and the rear end tin hat by machinery, bonding agent, in being welded to connect.
Be provided with perforate at the tail optical fiber protection tube, be provided with the high-temperature insulation material layer in the tail optical fiber protection tube.
A kind of in the multimode optical fiber that the single-mode fiber that described Transmission Fibers adopting quartz glass is made or adopting quartz glass are made.
There are many Transmission Fibers to be arranged on simultaneously this oil-filled transformer winding with in the fibre optic temperature sensor.
Described bonding agent is a kind of in high temperature adhesive, resin adhesive, plastic adhesive, metal binding agent, the silica gel bonding agent.
Advantage of the present utility model:
Oil-filled transformer winding fibre optic temperature sensor described in the utility model compared with prior art has the following advantages, and adapts to the chemical environment of various harshnesses, is not subjected to electromagnetic interference (EMI); Size is little, easily is installed to the position that traditional thermometric is difficult to arrive; Design has in use that easy installation, optical-fibre communications insertion loss are low, good airproof performance; Can directly contact various contacts, the tie point of electrical equipment, be used for the functions such as temperature monitoring of perception present position.Simultaneously, monitor reliably for a long time hot(test)-spot temperature in the oil-filled transformer of this utility model under the high electromagnetic environment of high temperature, and it is simple and reliable to have an encapsulation, and it is convenient, error free to install, exchange, long-time running is without temperature drift, the advantage such as do not need again to demarcate, satisfy the requirement that the Transformer Winding temperature monitoring uses, solve existing temperature sensor and can not directly monitor focus, temperature error is large, needs the problems such as again demarcation.
Description of drawings
Below in conjunction with drawings and the embodiments the utility model is described in further detail:
Fig. 1 is oil-filled transformer winding fibre optic temperature sensor one-piece construction schematic diagram;
Fig. 2 is oil-filled transformer winding fibre optic temperature sensor Split type structure schematic diagram;
Fig. 3 is the middle-end protection tube structural representation that the oil-filled transformer winding is used fibre optic temperature sensor;
Fig. 4 is the structural representation that the oil-filled transformer winding is used tail optical fiber protection tube in the fibre optic temperature sensor;
Fig. 5 is the structural representation that the oil-filled transformer winding is used front end locking cap in the fibre optic temperature sensor;
Fig. 6 is the structural representation that the oil-filled transformer winding is used rear end locking cap in the fibre optic temperature sensor;
Wherein:
1 is the front end locking cap, and 2 is the middle-end protection tube, and 3 is the rear end locking cap, and 4 is the tail optical fiber protection tube, and 5 is Transmission Fibers, 6
Be fiber grating,
7 is the high-temperature insulation material layer of middle-end protection tube, and 8 is the perforate on the middle-end protection tube,
9 is the high-temperature insulation material layer of tail optical fiber protection tube, and 10 is the perforate on the tail optical fiber protection tube,
Through hole centered by 11,12 is groove.
Embodiment
Fig. 1 is a kind of oil-filled transformer winding of the utility model fibre optic temperature sensor one-piece construction schematic diagram; Fig. 2 is a kind of oil-filled transformer winding of the utility model fibre optic temperature sensor Split type structure schematic diagram;
As depicted in figs. 1 and 2: a kind of oil-filled transformer winding fibre optic temperature sensor is characterized in that: this fibre optic temperature sensor be by two protection tubes 2 and 4, two locking caps 1 and 3 and Transmission Fibers 5 consist of; Be provided with fiber grating 6 in the described Transmission Fibers 5; Described two protection tubes 2 are connected with being connected with two locking caps 1 respectively with being connected, and described two protection tubes 2 and 4 are hollow form; Be provided with central through hole 11 in described one of them locking cap 3; be provided with groove 12 in another locking cap 1; the central through hole 11 that Transmission Fibers 5 penetrates from the central through hole 11 of a protection tube 4 by a locking cap 3 enters in another protection tube 2; enter in this locking cap 1 by in this protection tube 2 and the groove 12 that another locking cap 1 links to each other afterwards, be formed by connecting between all parts.
In the specific embodiment: described two tin hats 1 and 3 are respectively front end locking cap 1 and rear end locking cap 3, and described two protection tubes 2 and 4 are respectively middle-end protection tube 2 and tail optical fiber protection tube 4; In front end locking cap 1, be provided with groove 12, in tail optical fiber protection tube 4, be provided with central through hole 11.
In the specific embodiment: be connected by the machine mode between described front-end protection cap 1 and the middle-end protection tube 2.
In the specific embodiment: be connected mechanically between described rear end tin hat 3 and the middle-end protection tube 2.
A kind of oil-filled transformer winding fibre optic temperature sensor as shown in Figure 3 describedly can be provided with high-temperature insulation material layer 7 in middle-end protection tube 2; Describedly on middle-end protection tube 2, can be provided with perforate 8.
In the specific embodiment: be connected by bonding agent between described Transmission Fibers 5 and the tail optical fiber protection tube 4.
In the specific embodiment: be connected by welding manner between described tail optical fiber protection tube 4 and the rear end tin hat 3.
A kind of oil-filled transformer winding fibre optic temperature sensor as shown in Figure 4, wherein: describedly be provided with perforate 10 at tail optical fiber protection tube 4, the described high-temperature insulation material layer 9 that in tail optical fiber protection tube 4, is provided with.
In the specific embodiment: the single-mode fiber that described Transmission Fibers 5 adopting quartz glass are made.
In the specific embodiment: described can have 3 Transmission Fibers 5 to be arranged on simultaneously this oil-filled transformer winding with in the fibre optic temperature sensor.
In the specific embodiment: a described oil-filled transformer winding is distributed on the same Transmission Fibers 5 in the optical cable with fibre optic temperature sensor.
In the specific embodiment: described bonding agent is high temperature adhesive.
Fig. 1 is a kind of oil-filled transformer winding of the utility model fibre optic temperature sensor one-piece construction schematic diagram; Fig. 2 is a kind of oil-filled transformer winding of the utility model fibre optic temperature sensor Split type structure schematic diagram;
As depicted in figs. 1 and 2: a kind of oil-filled transformer winding fibre optic temperature sensor is characterized in that: this fibre optic temperature sensor be by two protection tubes 2 and 4, two locking caps 1 and 3 and Transmission Fibers 5 consist of; Be provided with fiber grating 6 in the described Transmission Fibers 5; Described two protection tubes 2 are connected with being connected with two locking caps 1 respectively with being connected, and described two protection tubes 2 and 4 are hollow form; Be provided with central through hole 11 in described one of them locking cap 3; be provided with groove 12 in another locking cap 1; the central through hole 11 that Transmission Fibers 5 penetrates from the central through hole 11 of a protection tube 4 by a locking cap 3 enters in another protection tube 2; enter in this locking cap 1 by in this protection tube 2 and the groove 12 that another locking cap 1 links to each other afterwards, be formed by connecting between all parts.
In the specific embodiment: described two tin hats 1 and 3 are respectively front end locking cap 1 and rear end locking cap 3, and described two protection tubes 2 and 4 are respectively middle-end protection tube 2 and tail optical fiber protection tube 4; In front end locking cap 1, be provided with groove 12, in tail optical fiber protection tube 4, be provided with central through hole 11.
In the specific embodiment: be connected by bonding agent between described front-end protection cap 1 and the middle-end protection tube 2.
In the specific embodiment: be connected by bonding agent between described rear end tin hat 3 and the middle-end protection tube 2.
A kind of oil-filled transformer winding fibre optic temperature sensor as shown in Figure 3, the described high-temperature insulation material layer 7 that in middle-end protection tube 2, is provided with.
In the specific embodiment: be connected mechanically between described Transmission Fibers 5 and the tail optical fiber protection tube 4.
In the specific embodiment: be connected mechanically between described tail optical fiber protection tube 4 and the rear end tin hat 3.
A kind of oil-filled transformer winding fibre optic temperature sensor as shown in Figure 4, wherein: the described high-temperature insulation material layer 9 that in tail optical fiber protection tube 4, is provided with.
In the specific embodiment: the multimode optical fiber that described Transmission Fibers 5 is made for quartz glass.
In the specific embodiment: described 1 Transmission Fibers 5 is arranged on this oil-filled transformer winding with in the fibre optic temperature sensor.
In the specific embodiment: described 2 oil-filled transformer windings are distributed on the same Transmission Fibers 5 in the optical cable with fibre optic temperature sensor.
In the specific embodiment: described bonding agent is the silica gel bonding agent.
Fig. 1 is a kind of oil-filled transformer winding of the utility model fibre optic temperature sensor one-piece construction schematic diagram; Fig. 2 is a kind of oil-filled transformer winding of the utility model fibre optic temperature sensor Split type structure schematic diagram;
As depicted in figs. 1 and 2: a kind of oil-filled transformer winding fibre optic temperature sensor is characterized in that: this fibre optic temperature sensor be by two protection tubes 2 and 4, two locking caps 1 and 3 and Transmission Fibers 5 consist of; Be provided with fiber grating 6 in the described Transmission Fibers 5; Described two protection tubes 2 are connected with being connected with two locking caps 1 respectively with being connected, and described two protection tubes 2 and 4 are hollow form; Be provided with central through hole 11 in described one of them locking cap 3; be provided with groove 12 in another locking cap 1; the central through hole 11 that Transmission Fibers 5 penetrates from the central through hole 11 of a protection tube 4 by a locking cap 3 enters in another protection tube 2; enter in this locking cap 1 by in this protection tube 2 and the groove 12 that another locking cap 1 links to each other afterwards, be formed by connecting between all parts.
In the specific embodiment: described two tin hats 1 and 3 are respectively front end locking cap 1 and rear end locking cap 3, and described two protection tubes 2 and 4 are respectively middle-end protection tube 2 and tail optical fiber protection tube 4; In front end locking cap 1, be provided with groove 12, in tail optical fiber protection tube 4, be provided with central through hole 11.
In the specific embodiment: be connected by welding manner between described front-end protection cap 1 and the middle-end protection tube 2.
In the specific embodiment: be connected by welding manner between described rear end tin hat 3 and the middle-end protection tube 2.
A kind of oil-filled transformer winding fibre optic temperature sensor as shown in Figure 3, the described high-temperature insulation material layer 7 that in middle-end protection tube 2, is provided with; Describedly be provided with perforate 8 at middle-end protection tube 2.
In the specific embodiment: be connected by bonding agent between described Transmission Fibers 5 and the tail optical fiber protection tube 4.
In the specific embodiment: be connected mechanically between described tail optical fiber protection tube 4 and the rear end tin hat 3.
A kind of oil-filled transformer winding fibre optic temperature sensor as shown in Figure 4, wherein: describedly be provided with perforate 10 at tail optical fiber protection tube 4, the described high-temperature insulation material layer 9 that in tail optical fiber protection tube 4, is provided with.
In the specific embodiment: the single-mode fiber that described Transmission Fibers 5 is made for quartz glass.
In the specific embodiment: described have 5 Transmission Fibers 5 to be arranged on simultaneously this oil-filled transformer winding with in the fibre optic temperature sensor.
In the specific embodiment: described 1 oil-filled transformer winding is arranged on the same Transmission Fibers 5 in the optical cable with fibre optic temperature sensor.
In the specific embodiment: described bonding agent is metal binding agent.
Fig. 1 is a kind of oil-filled transformer winding of the utility model fibre optic temperature sensor one-piece construction schematic diagram; Fig. 2 is a kind of oil-filled transformer winding of the utility model fibre optic temperature sensor Split type structure schematic diagram;
As depicted in figs. 1 and 2: a kind of oil-filled transformer winding fibre optic temperature sensor is characterized in that: this fibre optic temperature sensor be by two protection tubes 2 and 4, two locking caps 1 and 3 and Transmission Fibers 5 consist of; Be provided with fiber grating 6 in the described Transmission Fibers 5; Described two protection tubes 2 are connected with being connected with two locking caps 1 respectively with being connected, and described two protection tubes 2 and 4 are hollow form; Be provided with central through hole 11 in described one of them locking cap 3; be provided with groove 12 in another locking cap 1; the central through hole 11 that Transmission Fibers 5 penetrates from the central through hole 11 of a protection tube 4 by a locking cap 3 enters in another protection tube 2; enter in this locking cap 1 by in this protection tube 2 and the groove 12 that another locking cap 1 links to each other afterwards, be formed by connecting between all parts.
In the specific embodiment: described two tin hats 1 and 3 are respectively front end locking cap 1 and rear end locking cap 3, and described two protection tubes 2 and 4 are respectively middle-end protection tube 2 and tail optical fiber protection tube 4; In front end locking cap 1, be provided with groove 12, in tail optical fiber protection tube 4, be provided with central through hole 11.
In the specific embodiment: be connected by welding connecting mode between described front-end protection cap 1 and the middle-end protection tube 2.
In the specific embodiment: be connected mechanically between described rear end tin hat 3 and the middle-end protection tube 2.
A kind of oil-filled transformer winding fibre optic temperature sensor as shown in Figure 3, the described high-temperature insulation material layer 7 that in middle-end protection tube 2, is provided with.
In the specific embodiment: be connected mechanically between described Transmission Fibers 5 and the tail optical fiber protection tube 4.
In the specific embodiment: be connected mechanically between described tail optical fiber protection tube 4 and the rear end tin hat 3.
A kind of oil-filled transformer winding fibre optic temperature sensor as shown in Figure 4, wherein: the described high-temperature insulation material layer 9 that in tail optical fiber protection tube 4, is provided with.
In the specific embodiment: the multimode optical fiber that described Transmission Fibers 5 is made for quartz glass.
In the specific embodiment: described have 1 Transmission Fibers 5 to be arranged on this oil-filled transformer winding with in the fibre optic temperature sensor.
In the specific embodiment: described 1 oil-filled transformer winding is arranged on the same Transmission Fibers 5 in the optical cable with fibre optic temperature sensor.
In sum, compared with prior art have the following advantages, this structure adapts to the chemical environment of various harshnesses, is not subjected to electromagnetic interference (EMI); Size is little, easily is installed to the position that traditional thermometric is difficult to arrive; Design has in use that easy installation, optical-fibre communications insertion loss are low, good airproof performance; Can directly contact various contacts, the tie point of electrical equipment, be used for the functions such as temperature monitoring of perception present position.Simultaneously, monitor reliably for a long time hot(test)-spot temperature in the oil-filled transformer of this utility model under the high electromagnetic environment of high temperature, and it is simple and reliable to have an encapsulation, and it is convenient, error free to install, exchange, long-time running is without temperature drift, the advantage such as do not need again to demarcate, satisfy the requirement that the Transformer Winding temperature monitoring uses, solve existing temperature sensor and can not directly monitor focus, temperature error is large, needs the problems such as again demarcation.
Although above the utility model is had been described in detail, the utility model is not limited to this, and those skilled in the art of the present technique can carry out various modifications according to principle of the present utility model.Therefore, all modifications of doing according to the utility model principle all should be understood to fall into protection domain of the present utility model.
Claims (9)
1. oil-filled transformer winding fibre optic temperature sensor, it is characterized in that: this fibre optic temperature sensor is by two protection tubes, two locking caps and Transmission Fibers consist of; Be provided with fiber grating in the described Transmission Fibers; Described two protection tubes are connected with two locking caps respectively, and described two protection tubes are hollow form; Be provided with central through hole in described one of them locking cap; be provided with groove in another locking cap; the central through hole that Transmission Fibers penetrates from the central through hole of a protection tube by a locking cap enters in another protection tube; enter in this locking cap by in this protection tube and the groove that another locking cap links to each other afterwards, a kind of or its combination between all parts by mechanical connection, bonding agent connection, in being welded to connect is formed by connecting.
2. according to oil-filled transformer winding fibre optic temperature sensor claimed in claim 1, it is characterized in that: described two tin hats are respectively front end locking cap and rear end locking cap, and described two protection tubes are respectively middle-end protection tube and tail optical fiber protection tube; In the front end locking cap, be provided with groove, in the tail optical fiber protection tube, be provided with central through hole.
3. according to oil-filled transformer winding fibre optic temperature sensor claimed in claim 2, it is characterized in that: a kind of connection between described front-end protection cap and the middle-end protection tube by machinery, bonding agent, in being welded to connect; A kind of connection the between described rear end tin hat and the middle-end protection tube by machinery, bonding agent, in being welded to connect.。
4. according to oil-filled transformer winding fibre optic temperature sensor claimed in claim 2, it is characterized in that: in the middle-end protection tube, be provided with the high-temperature insulation material layer; Be provided with perforate at the middle-end protection tube.
5. according to oil-filled transformer winding fibre optic temperature sensor claimed in claim 2, it is characterized in that: a kind of connection between described Transmission Fibers and the tail optical fiber protection tube by machinery, bonding agent, in being welded to connect; A kind of connection the between described tail optical fiber protection tube and the rear end tin hat by machinery, bonding agent, in being welded to connect.
6. according to oil-filled transformer winding fibre optic temperature sensor claimed in claim 2, it is characterized in that: be provided with perforate at the tail optical fiber protection tube, be provided with the high-temperature insulation material layer in the tail optical fiber protection tube.
7. according to claim 1 or 2 described oil-filled transformer winding fibre optic temperature sensors, it is characterized in that: a kind of in the multimode optical fiber that the single-mode fiber that described Transmission Fibers adopting quartz glass is made or adopting quartz glass are made.
8. according to claim 1 or 2 described oil-filled transformer winding fibre optic temperature sensors, it is characterized in that: have many Transmission Fibers to be arranged on simultaneously this oil-filled transformer winding with in the fibre optic temperature sensor.
9. according to claim 1 or 2 described oil-filled transformer winding fibre optic temperature sensors, it is characterized in that: described bonding agent is a kind of in high temperature adhesive, resin adhesive, plastic adhesive, metal binding agent, the silica gel bonding agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320093688.3U CN203249709U (en) | 2013-02-28 | 2013-02-28 | Optical fiber temperature sensor used for oil-immersed transformer winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320093688.3U CN203249709U (en) | 2013-02-28 | 2013-02-28 | Optical fiber temperature sensor used for oil-immersed transformer winding |
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| Publication Number | Publication Date |
|---|---|
| CN203249709U true CN203249709U (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320093688.3U Expired - Lifetime CN203249709U (en) | 2013-02-28 | 2013-02-28 | Optical fiber temperature sensor used for oil-immersed transformer winding |
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| CN (1) | CN203249709U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162867A (en) * | 2013-02-28 | 2013-06-19 | 辽宁省电力有限公司营口供电公司 | Fiber optic temperature sensor for oil-immersed transformer winding |
| CN104236752A (en) * | 2014-09-17 | 2014-12-24 | 国家电网公司 | Oil-immersed transformer temperature measuring system |
-
2013
- 2013-02-28 CN CN201320093688.3U patent/CN203249709U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162867A (en) * | 2013-02-28 | 2013-06-19 | 辽宁省电力有限公司营口供电公司 | Fiber optic temperature sensor for oil-immersed transformer winding |
| CN103162867B (en) * | 2013-02-28 | 2016-01-13 | 辽宁省电力有限公司营口供电公司 | A kind of oil-filled transformer winding fibre optic temperature sensor |
| CN104236752A (en) * | 2014-09-17 | 2014-12-24 | 国家电网公司 | Oil-immersed transformer temperature measuring system |
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Granted publication date: 20131023 |