CN110174186B - Transformer internal temperature detection device and detection method thereof - Google Patents
Transformer internal temperature detection device and detection method thereof Download PDFInfo
- Publication number
- CN110174186B CN110174186B CN201910546909.XA CN201910546909A CN110174186B CN 110174186 B CN110174186 B CN 110174186B CN 201910546909 A CN201910546909 A CN 201910546909A CN 110174186 B CN110174186 B CN 110174186B
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- Prior art keywords
- shell
- transformer
- infrared
- objective lens
- infrared spectrum
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- 238000001514 detection method Methods 0.000 title claims abstract description 32
- 238000002329 infrared spectrum Methods 0.000 claims abstract description 25
- 238000004804 winding Methods 0.000 claims abstract description 17
- 230000008054 signal transmission Effects 0.000 claims abstract description 8
- 239000013307 optical fiber Substances 0.000 claims description 16
- 238000012546 transfer Methods 0.000 claims description 10
- 238000001228 spectrum Methods 0.000 claims description 4
- PFNQVRZLDWYSCW-UHFFFAOYSA-N (fluoren-9-ylideneamino) n-naphthalen-1-ylcarbamate Chemical compound C12=CC=CC=C2C2=CC=CC=C2C1=NOC(=O)NC1=CC=CC2=CC=CC=C12 PFNQVRZLDWYSCW-UHFFFAOYSA-N 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000005083 Zinc sulfide Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 229910052732 germanium Inorganic materials 0.000 claims description 3
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 3
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 claims description 3
- 229910001635 magnesium fluoride Inorganic materials 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 claims description 3
- 229910052984 zinc sulfide Inorganic materials 0.000 claims description 3
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims 3
- 238000009529 body temperature measurement Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 8
- 238000004364 calculation method Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 238000000691 measurement method Methods 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 3
- 239000003921 oil Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003331 infrared imaging Methods 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radiation Pyrometers (AREA)
Abstract
The invention discloses a temperature detection device and a detection method thereof in a transformer, wherein the temperature signal transmission device comprises a shell, an objective lens, an image turning device and an eyepiece, the shell is of a hollow structure, one end of the shell is provided with the objective lens, the other end of the shell is provided with the eyepiece, the top end of a transformer shell is provided with a detection opening, the inner wall below the detection opening of the transformer shell is provided with an inner rail in the vertical direction, the outer wall of the shell is provided with an outer rail, the objective lens end of the shell extends into the transformer along a notch, the outer rail is clamped on the inner rail on the inner wall of the transformer shell, the objective lens end is close to a transformer winding and detects and collects infrared spectrum signals, the eyepiece end is close to the near infrared thermal image temperature measurement device and transmits the infrared spectrum signals to the infrared thermal image temperature measurement device, and the two corners of the shell are provided with image turning devices for refracting and transmitting the infrared spectrum signals of the objective lens end to the eyepiece end.
Description
Technical Field
The invention belongs to the technical field of transformer detection, and particularly relates to a device and a method for detecting the internal temperature of a transformer.
Background
With the development of power systems, the voltage level is continuously improved, and the problems of loss and temperature rise of transformers become a research hotspot problem in the field of international electrotechnics. Therefore, effective detection of the internal temperature is of great importance to ensure safe and stable operation of the transformer.
At present, the detection method of the temperature of the internal winding of the transformer mainly comprises a direct measurement method and an indirect calculation measurement method. The direct measurement method adopts a method of directly placing an optical fiber sensor to obtain the winding hot spot temperature, and the result is visual and accurate, but the difficulty is high, the cost is high, and the internal insulation performance of the transformer can be influenced or even destroyed. The indirect measurement method of the hot spot temperature of the transformer winding is mainly based on the calculation formulas of the hot spot temperature of the transformer winding recommended by the International electrotechnical Commission IEEE Std C57.91-1995 and national standard GB/T15164-1994. The winding hot spot temperature calculation method recommended by the national standard is visual and simple, but has insufficient response to the nonlinear characteristics of the transformer, and the calculation result has insufficient precision under the overload condition; in addition, the thermal circuit model method simulates the thermal distribution in the transformer by using a thermal circuit model, the calculation process of the model is simple, the predicted result can better reflect the temperature of the transformer, but the accuracy of the obtained result needs to be further improved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a device and a method for detecting the internal temperature of a transformer aiming at the defects of the prior art.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
an internal temperature detection device for a transformer, wherein: including temperature signal transmission device and infrared thermal image temperature measuring device, temperature signal transmission device includes shell, objective, transfer device and eyepiece, the shell is hollow structure, and objective is installed to its one end, and the eyepiece is installed to the other end, and the detection mouth has been seted up on the transformer casing top, install the interior track of vertical direction on the inside wall of transformer casing detection mouth below, this interior track below fixed mounting has the stopper, the shell lateral wall is provided with outer track, the shell objective end stretches into inside the transformer along the breach, the interior track on the transformer casing inside wall is followed to outer track end and is slided down to the stopper that contradicts to outer track lower extreme, the objective end is close to the transformer winding and detects and gather infrared spectrum signal, transfer device is installed to two corners departments of shell, transfer device is with infrared spectrum signal refraction transmission to the eyepiece end, eyepiece fixed surface has infrared temperature measurement optic fibre, infrared temperature measurement optic fibre is connected with infrared thermal image measuring device for detect analysis infrared spectrum signal.
In order to optimize the technical scheme, the specific measures adopted further comprise:
the objective lens and the ocular lens are clamped at two ends of the shell.
The objective lens and the ocular lens are infrared light-transmitting window sheets, and the transmittance of the infrared light-transmitting window sheets is more than 95%.
The infrared light-transmitting window sheet is made of one of quartz, zinc sulfide, zinc selenide, silicon, germanium and magnesium fluoride.
The shell eyepiece end is provided with an internal thread, and the infrared temperature measuring optical fiber is provided with an external thread matched with the internal thread of the shell eyepiece end.
The infrared temperature measuring optical fiber is externally provided with an optical fiber protection sleeve, and the optical fiber protection sleeve is provided with external threads matched with the internal threads of the eyepiece end of the shell.
The number of the infrared temperature measuring fibers is 5-20.
The image transfer device comprises two prisms with identical specifications, and the prisms are arranged at two corners of the shell at 45 degrees.
The infrared thermal image temperature measuring device comprises an infrared thermal image receiver, a signal processor and a display screen which are electrically connected in sequence.
The invention also discloses a detection method adopting the transformer internal temperature detection device, which comprises the following steps:
step A: the outer shell stretches into the transformer from the top end opening of the transformer, an outer rail on the outer shell slides on an inner rail on the inner side wall of the transformer to the lower end of the outer rail to be abutted against the limiting block, and at the moment, the objective lens end of the outer shell is close to the central position of the transformer winding.
And (B) step (B): the objective lens collects infrared spectrum signals of the transformer winding, the infrared spectrum signals are refracted to the ocular lens through two triangular prisms at the corner of the shell, the infrared thermal image receiver receives the infrared spectrum signals, and the spectrum signals are three-dimensionally imaged and transmitted to the display screen through the signal processor.
The invention has the beneficial effects that:
1. compared with an external temperature measurement method for windowing the transformer box body, the method is used for physically shielding stray spectrums, ensuring high fidelity of data and greatly improving temperature detection accuracy.
2. Compared with the detection method for the side windowing of the transformer, the method has the advantages that the window is windowed at the top of the transformer, so that the oil leakage of the transformer is avoided, and meanwhile, the integral structural strength of the transformer shell is ensured.
3. The winding temperature detection device provided by the invention is inserted into the middle of the transformer oil tank, and the winding temperature infrared imaging visual angle is wide.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic view of the structure of the inner rail and the outer rail of the present invention.
The reference numerals are: the device comprises a shell 1, an objective lens 2, an image transfer device 3, an ocular lens 4, an inner track 5, an outer track 6, a limiting block 7, an infrared thermal image receiver 8, a signal processor 9 and a display screen 10.
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 present invention is a device for detecting the internal temperature of a transformer, wherein: including temperature signal transmission device and infrared thermal image temperature measuring device, temperature signal transmission device includes shell 1, objective 2, transfer device 3 and eyepiece 4, shell 1 is hollow structure, and objective 2 is installed to its one end, and eyepiece 4 is installed to the other end, and the detection mouth has been seted up on the transformer casing top, install the interior track 5 of vertical direction on the inside wall of transformer casing detection mouth below, this interior track 5 below fixed mounting has stopper 7, shell 1 lateral wall is provided with outer track 6, shell 1 objective 2 end stretches into inside the transformer along the breach, outer track 6 is followed the interior track 5 on the transformer casing inside wall and is slided down to outer track 6 lower extreme and contradict stopper 7, objective 2 end is close to the transformer winding and detects the infrared spectrum signal of collection, transfer device 3 is installed to two corners of shell 1, transfer device 3 refracts infrared spectrum signal transmission to eyepiece 4 ends, eyepiece 4 surface fixation has infrared temperature measuring optical fiber, infrared temperature measuring device is connected with infrared thermal image signal analysis.
In this embodiment, the objective lens 2 and the eyepiece lens 4 are engaged with both ends of the housing 1.
In this embodiment, the objective lens 2 and the eyepiece lens 4 are infrared light-transmitting window sheets, and the transmittance of the infrared light-transmitting window sheets is 95% or more.
In this embodiment, the infrared light-transmitting window is made of one of quartz, zinc sulfide, zinc selenide, silicon, germanium, and magnesium fluoride.
In the embodiment, the eyepiece 4 end of the housing 1 is provided with an internal thread, and the infrared temperature measuring optical fiber is provided with an external thread matched with the internal thread of the eyepiece 4 end of the housing 1.
In the embodiment, an optical fiber protection sleeve is arranged outside the infrared temperature measuring optical fiber, and the optical fiber protection sleeve is provided with an external thread matched with an internal thread at the end of the ocular 4 of the shell 1.
In this embodiment, the number of the infrared temperature measuring fibers is 5 to 20.
In this embodiment, the image transfer device 3 comprises two prisms of identical specifications, which are mounted at 45 ° to the two corners of the housing 1.
In this embodiment, the infrared thermal image temperature measuring device includes an infrared thermal image receiver 8, a signal processor 9 and a display screen 10 electrically connected in order.
The device comprises the following steps when in operation:
step A: the outer shell 1 stretches into the transformer from the top end opening of the transformer, an outer rail 6 on the outer shell 1 slides on an inner rail 5 on the inner side wall of the transformer until the lower end of the outer rail 6 is abutted against a limiting block 7, and at the moment, the end of an objective lens 2 of the outer shell 1 is close to the central position of a transformer winding.
And (B) step (B): the objective lens 2 collects infrared spectrum signals of the transformer winding, the infrared spectrum signals are refracted to the ocular lens 4 through two triangular prisms at the corner of the shell 1, the infrared thermal image receiver 8 receives the infrared spectrum signals, and the spectrum signals are three-dimensionally imaged through the signal processor 9 and transmitted to the display screen 10.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the invention without departing from the principles thereof are intended to be within the scope of the invention as set forth in the following claims.
Claims (8)
1. The utility model provides a transformer inside temperature detection device which characterized in that: the infrared spectrum analyzer comprises a temperature signal transmission device and an infrared thermal image temperature measuring device, wherein the temperature signal transmission device comprises a shell (1), an objective lens (2), an image conversion device (3) and an eyepiece (4), wherein the shell (1) is of a hollow structure, one end of the shell is provided with the objective lens (2), the other end of the shell is provided with the eyepiece (4), a detection port is formed in the top end of a transformer shell, an inner rail (5) in the vertical direction is arranged on the inner side wall below the detection port of the transformer shell, a limiting block (7) is fixedly arranged below the inner rail (5), an outer side wall of the shell (1) is provided with an outer rail (6), the end of the objective lens (2) extends into the inside of the transformer along a notch, the outer rail (6) slides downwards to the lower end of the outer rail (6) along the inner rail (5) on the inner side wall of the transformer shell, the end of the objective lens (2) is close to a transformer winding and detects and collects infrared spectrum signals, the image conversion device (3) is arranged at two corners of the shell (1), the infrared image conversion device (3) refracts the infrared spectrum signals to the infrared spectrum signals, the infrared spectrum signals are fixedly connected with the infrared spectrum analyzer, and the infrared spectrum analyzer is used for analyzing the infrared spectrum signals; the objective lens (2) and the ocular lens (4) are clamped at two ends of the shell (1); the infrared thermal image temperature measuring device comprises an infrared thermal image receiver (8), a signal processor (9) and a display screen (10) which are electrically connected in sequence.
2. The transformer internal temperature detection device according to claim 1, wherein: the objective lens (2) and the ocular lens (4) are infrared light transmission window sheets, and the transmittance of the infrared light transmission window sheets is more than 95 percent.
3. The transformer internal temperature detection device according to claim 2, wherein: the infrared light-transmitting window sheet is made of one of quartz, zinc sulfide, zinc selenide, silicon, germanium and magnesium fluoride.
4. The transformer internal temperature detection device according to claim 1, wherein: the infrared temperature measuring optical fiber is characterized in that an inner thread is arranged at the eyepiece (4) end of the shell (1), and an outer thread matched with the inner thread at the eyepiece (4) end of the shell (1) is arranged on the infrared temperature measuring optical fiber.
5. The transformer internal temperature detection device according to claim 4, wherein: the infrared temperature measuring optical fiber is externally provided with an optical fiber protection sleeve, and the optical fiber protection sleeve is provided with external threads matched with the internal threads at the ocular (4) end of the shell (1).
6. The transformer internal temperature detection device according to claim 5, wherein: the number of the infrared temperature measuring optical fibers is 5-20.
7. The transformer internal temperature detection device according to claim 1, wherein: the image transfer device (3) comprises two triangular prisms with identical specifications, and the triangular prisms are arranged at two corners of the shell (1) at 45 degrees.
8. A detection method using the transformer internal temperature detection device according to any one of claims 1 to 7, comprising the steps of:
step A: the outer shell (1) stretches into the transformer from the top end opening of the transformer, an outer rail (6) on the outer shell (1) slides on an inner rail (5) on the inner side wall of the transformer until the lower end of the outer rail (6) is abutted against a limiting block (7), and at the moment, the end of an objective lens (2) of the outer shell (1) is close to the central position of a transformer winding;
and (B) step (B): the objective lens (2) collects infrared spectrum signals of the transformer winding, the infrared spectrum signals are refracted to the ocular lens (4) through two triangular prisms at the corner of the shell (1), the infrared thermal image receiver (8) receives the infrared spectrum signals, and the spectrum signals are imaged in three dimensions through the signal processor (9) and transmitted to the display screen (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910546909.XA CN110174186B (en) | 2019-06-25 | 2019-06-25 | Transformer internal temperature detection device and detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910546909.XA CN110174186B (en) | 2019-06-25 | 2019-06-25 | Transformer internal temperature detection device and detection method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110174186A CN110174186A (en) | 2019-08-27 |
| CN110174186B true CN110174186B (en) | 2023-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910546909.XA Active CN110174186B (en) | 2019-06-25 | 2019-06-25 | Transformer internal temperature detection device and detection method thereof |
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| Country | Link |
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| CN (1) | CN110174186B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165707A (en) * | 2014-08-20 | 2014-11-26 | 国家电网公司 | Method for monitoring temperature of femtosecond all-fiber raman power transformer based on image transmission guide |
| CN207165405U (en) * | 2017-04-10 | 2018-03-30 | 浙江迪盛新能源科技有限公司 | A kind of high radiating transformer for wind power generation |
| WO2018126273A1 (en) * | 2016-12-31 | 2018-07-05 | Abb Schweiz Ag | Systems and methods for monitoring components in a power transformer or the like |
| CN208672178U (en) * | 2018-08-03 | 2019-03-29 | 江苏方天电力技术有限公司 | A kind of contactless spectrum temperature measuring equipment of for transformer winding |
| CN210037003U (en) * | 2019-06-25 | 2020-02-07 | 江苏方天电力技术有限公司 | Transformer internal temperature detection device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7377689B2 (en) * | 2005-05-06 | 2008-05-27 | Qualitrol Corporation | Transformer temperature monitoring and control |
-
2019
- 2019-06-25 CN CN201910546909.XA patent/CN110174186B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165707A (en) * | 2014-08-20 | 2014-11-26 | 国家电网公司 | Method for monitoring temperature of femtosecond all-fiber raman power transformer based on image transmission guide |
| WO2018126273A1 (en) * | 2016-12-31 | 2018-07-05 | Abb Schweiz Ag | Systems and methods for monitoring components in a power transformer or the like |
| CN207165405U (en) * | 2017-04-10 | 2018-03-30 | 浙江迪盛新能源科技有限公司 | A kind of high radiating transformer for wind power generation |
| CN208672178U (en) * | 2018-08-03 | 2019-03-29 | 江苏方天电力技术有限公司 | A kind of contactless spectrum temperature measuring equipment of for transformer winding |
| CN210037003U (en) * | 2019-06-25 | 2020-02-07 | 江苏方天电力技术有限公司 | Transformer internal temperature detection device |
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| Publication number | Publication date |
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| CN110174186A (en) | 2019-08-27 |
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