CN210036968U - Endoscopic transformer winding temperature detection device - Google Patents
Endoscopic transformer winding temperature detection device Download PDFInfo
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- CN210036968U CN210036968U CN201920966075.3U CN201920966075U CN210036968U CN 210036968 U CN210036968 U CN 210036968U CN 201920966075 U CN201920966075 U CN 201920966075U CN 210036968 U CN210036968 U CN 210036968U
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- transformer winding
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- infrared
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Abstract
The utility model discloses an endoscopic transformer winding temperature detection device, which comprises a temperature signal transmission device and an infrared thermal image temperature measurement device, the temperature signal transmission device comprises a first insulating conduit, a second insulating conduit, a flange joint and a filter, the insulating conduit is internally provided with a plurality of optical fibers, two insulating conduit signal acquisition ends extend into the transformer from an opening at the top end of the transformer, a first insulating conduit signal acquisition end is close to the front side of a transformer winding temperature field, a second insulating conduit signal acquisition end is close to the back side of the transformer winding temperature field, two insulating conduit signal output ends are connected with an infrared thermal image temperature measuring device, a filter is installed at a connecting port of the infrared thermal image temperature measuring device, a spectrum signal penetrates through the filter from a signal output end of the insulating guide pipe to the infrared thermal image temperature measuring device, and the infrared thermal image temperature measuring device is connected with a flange joint at an opening at the top end of the transformer.
Description
Technical Field
The utility model belongs to the technical field of the transformer detects, concretely relates to peep formula transformer winding temperature-detecting device in.
Background
With the development of power systems, the voltage level is continuously improved, and the problems of loss and temperature rise of transformers become hot research problems in the international electrotechnical field. Therefore, the effective detection of the internal temperature has important significance for ensuring the safe and stable operation of the transformer.
At present, the detection method of the temperature of the winding inside the transformer mainly comprises a direct measurement method and an indirect calculation measurement method. The direct measurement method adopts a method of directly embedding an optical fiber sensor to obtain the winding hot spot temperature, although the result is more intuitive and accurate, the difficulty is high, the cost is high, and the internal insulation performance of the transformer can be influenced or even damaged. The indirect measurement method of the transformer winding hot spot temperature is mainly based on the calculation formula of the transformer winding hot spot temperature recommended in the International electrotechnical Commission IEEE Std C57.91-1995 and the national standard GB/T15164-1994. The winding hot spot temperature calculation method recommended by the national standard is visual and simple, but has insufficient reaction on the nonlinear characteristics of the transformer, and has insufficient calculation result precision under the condition of overload; in addition, a thermal circuit model method is used for simulating the heat distribution in the transformer by using a thermal circuit model, the calculation process of the model is simple, the prediction result can better reflect the temperature of the transformer, and the accuracy of the obtained result needs to be further improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the not enough of above-mentioned prior art, provide an peep formula transformer winding temperature-detecting device in.
In order to realize the technical purpose, the utility model discloses the technical scheme who takes does:
an endoscopic transformer winding temperature detection device, wherein: the temperature signal transmission device comprises a first insulation guide pipe, a second insulation guide pipe and a filter, a plurality of optical fibers are arranged in the first insulation guide pipe and the second insulation guide pipe respectively, the first insulation guide pipe and the second insulation guide pipe respectively comprise a signal acquisition end and a signal output end, the signal acquisition end extends into the transformer from a detection port at the top end of the transformer, the insulation guide pipes are fixed on the side wall of the transformer, the signal acquisition end of the first insulation guide pipe is close to the front surface of a transformer winding temperature field, the signal acquisition end of the second insulation guide pipe is close to the back surface of the transformer winding temperature field, the signal output ends of the two insulation guide pipes are connected with the infrared thermal image temperature measuring device, the filter is arranged at the connection port of the infrared thermal image temperature measuring device, and a spectrum signal passes through the filter from the signal output end of the insulation guide pipes to the infrared, and the infrared thermal image temperature measuring device is fixedly connected with the detection port at the top end of the transformer.
In order to optimize the technical scheme, the specific measures adopted further comprise:
the filter is an infrared light-transmitting window sheet, and the transmittance of the infrared light-transmitting window sheet is more than 95%.
The infrared light-transmitting window sheet is made of one of calcium fluoride glass, quartz, zinc sulfide, zinc selenide, silicon, germanium and magnesium fluoride.
The number of the optical fibers arranged in the first insulating conduit and the second insulating conduit is 5-20.
The endoscopic transformer winding temperature detection device further comprises a flange joint, and the infrared thermal imaging temperature measurement device is connected with the flange joint of the detection port at the top end of the transformer.
The infrared thermal image temperature measuring device comprises an infrared temperature measuring sensor, a synchronous data acquisition unit and a display screen which are sequentially and electrically connected.
The wavelength range of the infrared temperature measurement sensor is 1.0-14.0 mu m.
The utility model has the advantages that:
1. compared with an external temperature measurement method for windowing the transformer box body, the method physically shields stray spectra, ensures high fidelity of data and greatly improves temperature detection accuracy.
2. Compared with a detection method for windowing the side surface of the transformer, the method has the advantages that the top of the transformer is windowed, so that the oil leakage of the transformer is guaranteed, and the integral structural strength of the transformer shell is also guaranteed.
3. The winding temperature detection device disclosed by the invention is inserted into the middle part of the transformer oil tank, and the infrared imaging visual angle of the winding temperature is wide.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
the reference signs are: the device comprises a first insulating conduit 1, a second insulating conduit 2, a filter 3, a flange joint 4, an infrared temperature measuring sensor 5, a synchronous data acquisition unit 6 and a display screen 7.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, the utility model relates to an peep formula transformer winding temperature-detecting device in, including temperature signal transmission device and infrared thermal image temperature measuring device, temperature signal transmission device includes first insulating pipe 1, second insulating pipe 2 and filter 3, wherein first insulating pipe 1, a plurality of optic fibre are all put to second insulating pipe 2, wherein the quantity of the built-in optic fibre of first insulating pipe 1 and second insulating pipe 2 is 5 ~ 20, filter 3 is infrared printing opacity window piece, the material of this infrared printing opacity window piece is one of calcium fluoride glass, quartzy, zinc sulfide, zinc selenide, silicon, germanium, magnesium fluoride, and the transmissivity of infrared printing opacity window piece is more than 95%.
The first insulating conduit 1 and the second insulating conduit 2 respectively comprise a signal acquisition end and a signal output end, the signal acquisition ends of the two insulating conduits extend into the transformer from a transformer top detection port, the insulating conduits are fixed on the side wall of the transformer, the signal acquisition end of the first insulating conduit 1 is close to the front surface of a transformer winding temperature field, the signal acquisition end of the second insulating conduit 2 is close to the back surface of the transformer winding temperature field, and the signal output ends of the two insulating conduits are connected with an infrared thermal image temperature measuring device.
The infrared thermal image temperature measuring device comprises an infrared temperature measuring sensor 5, a synchronous data collector 6 and a display screen 7 which are sequentially and electrically connected, wherein the infrared temperature measuring sensor 5 is selected to have a wavelength range of 1.0-14.0 microns.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, a plurality of modifications and decorations without departing from the principle of the present invention should be considered as the protection scope of the present invention.
Claims (7)
1. An endoscopic transformer winding temperature detection device is characterized in that: the temperature signal transmission device comprises a first insulation guide pipe (1), a second insulation guide pipe (2) and a filter (3), wherein a plurality of optical fibers are respectively arranged in the first insulation guide pipe (1) and the second insulation guide pipe (2), the first insulation guide pipe (1) and the second insulation guide pipe (2) respectively comprise a signal acquisition end and a signal output end, the signal acquisition ends extend into the transformer from a detection port at the top end of the transformer, the insulation guide pipes are fixed on the side wall of the transformer, the signal acquisition end of the first insulation guide pipe (1) is close to the front surface of a transformer winding temperature field, the signal acquisition end of the second insulation guide pipe (2) is close to the back surface of the transformer winding temperature field, the signal output ends of the two insulation guide pipes are connected with the thermal infrared image temperature measuring device, and the filter (3) is arranged at the connection port of the thermal infrared image temperature measuring device, the spectral signal passes through the filter (3) from the signal output end of the insulating conduit to the infrared thermal image temperature measuring device, and the infrared thermal image temperature measuring device is fixedly connected with the detection port at the top end of the transformer.
2. The endoscopic transformer winding temperature sensing device according to claim 1, wherein: the filter (3) is an infrared light-transmitting window sheet, and the transmittance of the infrared light-transmitting window sheet is more than 95%.
3. An endoscopic transformer winding temperature sensing apparatus according to claim 2, wherein: the infrared light-transmitting window sheet is made of one of calcium fluoride glass, quartz, zinc sulfide, zinc selenide, silicon, germanium and magnesium fluoride.
4. The endoscopic transformer winding temperature sensing device according to claim 1, wherein: the number of the optical fibers arranged in the first insulating conduit (1) and the second insulating conduit (2) is 5-20.
5. The endoscopic transformer winding temperature sensing device according to claim 1, wherein: the infrared thermal image temperature measuring device is connected with the flange joint (4) of the detection port at the top end of the transformer.
6. The endoscopic transformer winding temperature sensing device according to claim 1, wherein: the infrared thermal image temperature measuring device comprises an infrared temperature measuring sensor (5), a synchronous data acquisition unit (6) and a display screen (7) which are electrically connected in sequence.
7. An endoscopic transformer winding temperature sensing apparatus according to claim 6, wherein: the infrared temperature measurement sensor (5) is selected to have a wavelength range of 1.0-14.0 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920966075.3U CN210036968U (en) | 2019-06-25 | 2019-06-25 | Endoscopic transformer winding temperature detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920966075.3U CN210036968U (en) | 2019-06-25 | 2019-06-25 | Endoscopic transformer winding temperature detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210036968U true CN210036968U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920966075.3U Active CN210036968U (en) | 2019-06-25 | 2019-06-25 | Endoscopic transformer winding temperature detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210036968U (en) |
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2019
- 2019-06-25 CN CN201920966075.3U patent/CN210036968U/en active Active
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