CN202793641U - Device for measuring temperature of oil immersed transformer winding - Google Patents
Device for measuring temperature of oil immersed transformer winding Download PDFInfo
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- CN202793641U CN202793641U CN201220323500.5U CN201220323500U CN202793641U CN 202793641 U CN202793641 U CN 202793641U CN 201220323500 U CN201220323500 U CN 201220323500U CN 202793641 U CN202793641 U CN 202793641U
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- pad
- groove
- temperature
- transformer winding
- oil
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Abstract
The utility model discloses a device for measuring the temperature of an oil immersed transformer winding, and solves the problems in the prior art that the measurement of an electric signal is easily subjected to the electromagnetic interference of the winding and the measurement result is inaccurate. The device comprises a pad (1), wherein a groove (2) is formed on the upper surface of the pad (1). A high-temperature insulation adhesive (4) is arranged in the groove (2). An insulation paper barrel (6) is arranged in the high-temperature insulation adhesive (4). A probe type optical fiber grating temperature sensor (3) is arranged in the insulation paper barrel (6) and is connected with a signal lead-out wire (5). A closed cover board (7) is arranged on the upper surface of the pad (1), wherein the upper surface of the pad is provided with the groove (2). The pad (1) and the closed cover board (7) which are combined with each other are movably arranged in a slit of the oil immersed transformer winding. The device is simple in structure, easy to operate, safe and reliable. Meanwhile, due to the adoption of the device, temperature measured values are accurate.
Description
Technical field
The present invention relates to a kind of oil-immersed type transformer winding temperature measurement device based on the optical fiber grating temperature on-line monitoring.
Background technology
Power transformer is most important electrical equipment in the electric system, and impelling electric power transformer insulated aging principal element is temperature, moisture and oxygen.Moisture and oxygen are the bases, and temperature is catalyzer.During the transformer belt load, the effect of thermal effect is more outstanding, and thermal effect is the deciding factor of transformer belt load capacity.And for oil-filled transformer, winding temperature directly determines security of operation and the ageing rate of transformer, and the winding temperature monitoring is Focal point and difficult point always, and traditional metering system has indirect measurement and directly measures two kinds.Indirectly measure and have the poor and low defective of accuracy of real-time.Traditional direct measurement is to use resistance thermometer, thermocouple measurement, and the shortcoming of this method is that electric signal is subject to electromagnetic interference (EMI), and can affect the transformer built-in electrical insulation, measurement result is inaccurate.
Summary of the invention
A kind of oil-immersed type transformer winding temperature measurement device solves provided by the invention the measurement electric signal that exists of prior art be subject to winding electric magnetic interference and the inaccurate problem of measurement result.
The present invention solves above technical matters by the following technical programs:
A kind of oil-immersed type transformer winding temperature measurement device, comprise pad, upper surface at pad is provided with groove, in groove, be provided with high-temperature insulating glue, in high-temperature insulating glue, be provided with insulating paper cylinder, in insulating paper cylinder, be provided with the probe-type fiber-optical grating temperature sensor, the probe-type fiber-optical grating temperature sensor is connected with the signal extension line, be provided with closed cover at the reeded upper surface of arranging of pad, the pad that combines and closed cover are movably arranged in the slit of oil-immersed type transformer winding.
Described pad is rectangle, and groove is to arrange along the diagonal of rectangular washer.
A kind of oil-immersed type transformer winding temperature measurement method may further comprise the steps:
The first step, on the upper surface of the pad of rectangle, leave groove along the diagonal of rectangular washer;
Second step, the probe-type fiber-optical grating temperature sensor that will be wrapped in the insulating paper cylinder are placed in the groove of pad, and afterbody and the signal extension line of probe-type fiber-optical grating temperature sensor linked together, and then inject high-temperature insulating glue in groove;
The 3rd goes on foot, closed cover is bonded in out on the upper surface of reeded pad;
The 4th the step, strut the oil-immersed type transformer winding coil with chock first, again the pad that is bonded together and closed cover are put in the slit of the oil-immersed type transformer winding coil that struts, signal extension line and thermometric display instrument are linked together.
The present invention is simple in structure, and processing ease is safe and reliable, and measured temperature is accurate.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the syndeton synoptic diagram between pad 1 of the present invention and the closed cover 7;
Fig. 3 is that the present invention utilizes chock 8 pad 1 to be put into the structural representation of oil-immersed type transformer winding coil 9.
Embodiment
A kind of oil-immersed type transformer winding temperature measurement device, comprise pad 1, upper surface at pad 1 is provided with groove 2, in groove 2, be provided with high-temperature insulating glue 4, in high-temperature insulating glue 4, be provided with insulating paper cylinder 6, in insulating paper cylinder 6, be provided with probe-type fiber-optical grating temperature sensor 3, probe-type fiber-optical grating temperature sensor 3 is connected with signal extension line 5, the upper surface that is provided with groove 2 at pad 1 is provided with closed cover 7, and the pad 1 and the closed cover 7 that combine are movably arranged in the slit of oil-immersed type transformer winding.
Described pad 1 is rectangle, and groove 2 is to arrange along the diagonal of rectangular washer 1.
A kind of oil-immersed type transformer winding temperature measurement method may further comprise the steps:
The first step, on the upper surface of the pad 1 of rectangle, leave groove 2 along the diagonal of rectangular washer 1;
Second step, the probe-type fiber-optical grating temperature sensor 3 that will be wrapped in the insulating paper cylinder 6 are placed in the groove 2 of pad 1, and afterbody and the signal extension line 5 of probe-type fiber-optical grating temperature sensor 3 linked together, then in groove 2, inject high-temperature insulating glue 4;
The 3rd goes on foot, closed cover 7 is bonded on the upper surface of the pad 1 that has groove 2;
The 4th step, strut oil-immersed type transformer winding coil 9 with chock 8 first, again the pad 1 that is bonded together and closed cover 7 are put in the slit of the oil-immersed type transformer winding coil 9 that struts, signal extension line 5 and thermometric display instrument are linked together.
Use the probe-type fiber-optical grating temperature sensor that adopts insulation-encapsulated as the temperature monitoring device among the present invention; with the packaged fibre optic temperature sensor of insulating paper cylinder and be adhesive in high-temperature insulation in the groove of special pad; with the pad covering protection for fluting; one worked to put into high-tension transformer winding coil slit fixing; fibre optic temperature sensor can adopt several series systems, realizes that a plurality of focuses are monitored simultaneously in the winding.The present invention has adopted the optical fiber grating temperature-measuring mode, has realized the not charging temps detection of oil-immersed type transformer winding inside, by a plurality of temperature sensor series and parallels, realizes that a plurality of focuses are measured simultaneously in the winding.And, little based on the fiber-optical grating temperature sensor volume, stable performance, precision is good, highly sensitive characteristics, a plurality of sensors can be deep into winding inside and carry out direct temperature measurement during thermometric, and measurement result is promptly and accurately comprehensive; In addition this winding temperature measurement mode also have need not the transformer winding structure cost of making amendment low, the advantages such as simple convenient later maintenance of constructing early stage.
A plurality of sensor series and parallels can be realized the comprehensively in real time accurately directly monitoring to the Transformer Winding temperature, the 110KV transformer can preset 4-6 sensor generally speaking, the 220KV transformer can preset 6-9 sensor, and the 500KV transformer can preset 12 with upper sensor, and collocation flexibly.Sensor just can preset before winding dispatches from the factory, and need not transformer winding structure is transformed, and construction volume is little, and cost is low, realizes easily.
Claims (2)
1. oil-immersed type transformer winding temperature measurement device, comprise pad (1), upper surface at pad (1) is provided with groove (2), it is characterized in that, in groove (2), be provided with high-temperature insulating glue (4), in high-temperature insulating glue (4), be provided with insulating paper cylinder (6), in insulating paper cylinder (6), be provided with probe-type fiber-optical grating temperature sensor (3), probe-type fiber-optical grating temperature sensor (3) is connected with signal extension line (5), the upper surface that is provided with groove (2) at pad (1) is provided with closed cover (7), and the pad that combines (1) and closed cover (7) are movably arranged in the slit of oil-immersed type transformer winding.
2. a kind of oil-immersed type transformer winding temperature measurement device according to claim 1 is characterized in that described pad (1) is rectangle, and groove (2) is to arrange along the diagonal of rectangular washer (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220323500.5U CN202793641U (en) | 2012-07-05 | 2012-07-05 | Device for measuring temperature of oil immersed transformer winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220323500.5U CN202793641U (en) | 2012-07-05 | 2012-07-05 | Device for measuring temperature of oil immersed transformer winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202793641U true CN202793641U (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220323500.5U Expired - Fee Related CN202793641U (en) | 2012-07-05 | 2012-07-05 | Device for measuring temperature of oil immersed transformer winding |
Country Status (1)
| Country | Link |
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| CN (1) | CN202793641U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759418A (en) * | 2012-07-05 | 2012-10-31 | 山西省电力公司长治供电分公司 | Device and method for measuring oil immersed transformer winding |
-
2012
- 2012-07-05 CN CN201220323500.5U patent/CN202793641U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759418A (en) * | 2012-07-05 | 2012-10-31 | 山西省电力公司长治供电分公司 | Device and method for measuring oil immersed 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20180705 |