Oil-impregnated paper sleeve with state monitoring function

Abstract

The invention discloses an oil-impregnated paper bushing with a state monitoring function, and relates to the technical field of transformer bushing fault monitoring, the oil-impregnated paper bushing comprises a bushing, a sensing assembly, a mounting bin, an optical through device and an edge processor; one end of the mounting bin is in threaded connection with the oil taking opening of the sleeve, and the sensing assembly is fixedly mounted in the mounting bin; the sensing assembly comprises a glass groove, a sensing module and a humidity grating, and the sensing module and the humidity grating are arranged in the glass groove; one end of the optical penetrating device penetrates through the other end of the mounting bin and is respectively connected with the tail ends of the sensing module and the humidity grating through optical fibers; the sensing assembly is used for collecting working condition parameters of the casing pipe, and the edge processor is used for conducting fault monitoring according to the working condition parameters and generating a fault monitoring result. The technical problems that the hidden danger of the oil-impregnated paper sleeve is checked, the oil-impregnated paper sleeve of the power transformer cannot be monitored on line, and the operation reliability of the power transformer is reduced are solved.

Description

Technical Field

[0001] The invention relates to the technical field of transformer bushing fault monitoring, and in particular to an oil-immersed paper bushing with a state monitoring function. Background Art

[0002] Oil-impregnated paper bushings are widely used in power transformer outlet components. They are the first insulation structures to be trial-produced in the development of ultra-high voltage power systems. Whether they are safe and stable will directly affect the operation of the transformer. Oil-impregnated paper bushings will be subjected to working voltage, load current for a long time, and will experience short-term overvoltage and fault current after a fault occurs. In particular, oil-impregnated paper bushings are subjected to electrical, thermal and mechanical stresses during operation. In addition, they are also subjected to environmental factors such as rain, snow, condensation, high humidity and large temperature differences. This process will cause the insulation performance of oil-impregnated paper bushings to gradually deteriorate or become damaged and heated. In severe cases, explosion accidents will occur, which will not only damage the oil-impregnated paper bushings themselves, but may also cause the accident to expand further, posing a serious threat to transformers and nearby equipment, and even causing large-scale power outages and casualties. Therefore, it is very important to conduct timely inspections of hidden dangers in oil-impregnated paper bushings.

[0003] At present, hidden dangers of oil-immersed paper bushings are mainly checked through regular preventive tests conducted manually. However, the main equipment needs to be shut down to conduct preventive tests on oil-immersed paper bushings, and online monitoring of the oil-immersed paper bushings of power transformers cannot be performed, which reduces the reliability of power transformer operation. Summary of the invention

[0004] The present invention provides an oil-immersed paper bushing with a state monitoring function, which solves the technical problem that hidden dangers of the oil-immersed paper bushing are mainly checked by manual regular preventive tests, and the preventive tests of the oil-immersed paper bushing require shutting down the main equipment, making it impossible to perform online monitoring of the oil-immersed paper bushing of the power transformer, thereby reducing the reliability of the operation of the power transformer.

[0005] The first aspect of the present invention provides an oil-immersed paper casing with a state monitoring function, comprising a casing, a sensor component, a mounting bin, an optical through-hole and an edge processor;

[0006] One end of the installation bin is threadedly connected to the oil extraction port of the casing, and the sensor assembly is fixedly installed inside the installation bin;

[0007] The sensing assembly comprises a glass groove, a sensing module and a humidity grating, wherein the sensing module and the humidity grating are arranged inside the glass groove;

[0008] The optical penetrator is provided at the other end of the installation chamber, and one end of the optical penetrator penetrates through the other end of the installation chamber and is connected to the sensing module and the end of the humidity grating respectively through optical fibers;

[0009] The sensor assembly is used to collect the working parameters of the casing and transmit the working parameters to the edge processor;

[0010] The optical via is electrically connected to the edge processor, and the edge processor is used to perform fault monitoring according to the operating condition parameters and generate a fault monitoring result.

[0011] Optionally, the sensing module includes a moisture barrier, a temperature grating and a pressure sensing element;

[0012] The temperature grating and the pressure sensing element are sleeved with the moisture-isolating member;

[0013] The optical fiber is connected to the ends of the pressure sensing element and the temperature grating respectively.

[0014] Optionally, the pressure sensing element includes a pressure grating and a temperature insulation member;

[0015] The temperature insulating component is sleeved on the pressure grating, and the end of the pressure grating is connected to the optical fiber.

[0016] Optionally, the edge processor includes a decoupling module, a normalization module, a fuzzification module and a matching module;

[0017] The decoupling module is used to perform decoupling processing on the operating condition parameters to obtain decoupled operating condition parameters;

[0018] The normalization module is used to normalize the decoupling operating condition parameters to obtain relative operating condition parameters;

[0019] The fuzzification module is used to perform fuzzification processing on the relative operating condition parameters to obtain fuzzy operating condition parameters;

[0020] The matching module is used to input the fuzzy process condition parameters into a preset fault feature library to generate a fault monitoring result.

[0021] Optionally, flange holes are provided at both ends of the installation bin;

[0022] The optical fiber end is led out of the installation chamber through the flange hole.

[0023] Optionally, wavelengths of the pressure grating, the temperature grating and the humidity grating are 1530 nm, 1540 nm and 1550 nm respectively.

[0024] Optionally, the glass groove is mounted on the optical fiber via an adhesive.

[0025] Optionally, a humidity sensitive film is provided on the humidity grating;

[0026] The humidity sensitive film is a polyimide film.

[0027] Optionally, the moisture barrier is an acrylic cover.

[0028] Optionally, the thermal insulation component is a thermoplastic high-temperature plastic shell.

[0029] It can be seen from the above technical solutions that the present invention has the following advantages:

[0030] The present invention integrates the sensor component in the installation bin, and installs the installation bin at the oil extraction port of the casing to communicate with the inside of the casing, so as to directly collect the operating parameters inside the casing, and use the edge processor to perform fault monitoring on the collected operating parameters, generate fault monitoring results, and thus realize online monitoring of the oil-impregnated paper casing. It overcomes the technical problem that the hidden dangers of the existing oil-impregnated paper casing are mainly checked by manual regular preventive tests, and the main equipment needs to be shut down to carry out preventive tests on the oil-impregnated paper casing, and the oil-impregnated paper casing of the power transformer cannot be monitored online. Compared with the traditional oil-impregnated paper casing, the oil-impregnated paper casing of the present invention is equipped with an installation bin with an integrated sensor component at the oil extraction port, without shutting down the main equipment, and can directly collect the operating parameters inside the casing, and perform fault monitoring on the casing, thereby improving the reliability of the operation of the power transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 A schematic diagram of an oil-immersed paper sleeve structure with a state monitoring function provided in an embodiment of the present application;

[0033] Figure 2 A schematic diagram of the structure of the installation bin provided in the embodiment of the present application;

[0034] The reference numerals are as follows:

[0035] 1. Casing; 2. Installation chamber; 3. Optical through-hole; 4. Humidity grating; 5. Temperature grating; 6. Pressure grating; 7. Optical fiber; 8. Thermal insulation; 9. Moisture insulation; 10. Glass tank. DETAILED DESCRIPTION

[0036] An embodiment of the present invention provides an oil-immersed paper bushing with a state monitoring function, which is used to solve the technical problem that the hidden dangers of the oil-immersed paper bushing are mainly checked by manual regular preventive tests, and the preventive tests of the oil-immersed paper bushing require shutting down the main equipment, making it impossible to perform online monitoring of the oil-immersed paper bushing of the power transformer, thereby reducing the reliability of the operation of the power transformer.

[0037] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] For easier understanding, see Figure 1-Figure 2 , the present invention provides an oil-immersed paper casing 1 with a state monitoring function, comprising a casing 1, a sensor component, a mounting bin 2, an optical through-hole 3 and an edge processor;

[0039] One end of the installation chamber 2 is threadedly connected to the oil extraction port of the casing 1, and the sensor component is fixedly installed inside the installation chamber 2;

[0040] The sensing assembly includes a glass tank 10, a sensing module and a humidity grating 4, wherein the sensing module and the humidity grating 4 are arranged inside the glass tank 10;

[0041] An optical penetrator 3 is provided at the other end of the installation chamber 2, and one end of the optical penetrator 3 penetrates through the installation chamber 2 and the other end is connected to the ends of the sensing module and the humidity grating 4 respectively through the optical fiber 7;

[0042] A sensor component, used for collecting operating parameters of the casing 1 and transmitting the operating parameters to an edge processor;

[0043] The optical through-device 3 is electrically connected to the edge processor, and the edge processor is used to perform fault monitoring according to the operating parameters and generate fault monitoring results.

[0044] In an embodiment of the present invention, an oil-immersed paper casing 1 with a state monitoring function includes a casing 1, a sensor component, an installation chamber 2, an optical through-hole 3 and an edge processor. One end of the installation chamber 2 is provided with a threaded structure matching the oil extraction port of the casing 1 (i.e., the external thread or internal thread depends on the thread type of the oil extraction port), and is docked with the oil extraction port of the casing 1 through the threaded structure. The sensor component is fixedly installed inside the installation chamber 2, and is used to collect the operating parameters of the casing 1 (i.e., the temperature wavelength data, humidity wavelength data and pressure wavelength data inside the casing 1), and transmit the operating parameters to the edge processor. The sensor component includes a glass groove 10, a sensor module and a humidity grating 4, and the sensor module and the humidity grating 4 are fixed inside the glass groove 10. An optical through-hole 3 is installed at the other end of the installation chamber 2, and one end of the optical through-hole 3 penetrates the other end of the installation chamber 2 and is connected to the ends of the sensor module and the humidity grating 4 respectively through the optical fiber 7. The edge processor is electrically connected to the optical via 3 and is used to perform fault monitoring according to the operating parameters and generate fault monitoring results, thereby realizing online monitoring of the oil-immersed paper casing 1 .

[0045] It is worth mentioning that when the installation chamber 2 is installed with the casing 1, the threaded end of the installation chamber 2 is aligned with the oil inlet of the casing 1, and then tightened and fixed with a nut. At the same time, a sealing gasket is set at the threaded connection to prevent leakage of insulating oil and improve the sealing between the casing 1 and the installation chamber 2.

[0046] It is worth mentioning that when the installation chamber 2 is connected to the oil extraction port of the casing 1, the interior of the installation chamber 2 will be filled with insulating oil. By replacing the traditional electrical connection method with the optical penetrator 3, electrical safety hazards such as leakage and short circuit caused by electrical connection in an insulating oil environment can be avoided. In addition, the optical signal collected by the sensor module and the humidity grating 4 can be transmitted to the outside of the installation chamber 2 through the optical channel inside the optical penetrator 3, and then converted back into an electrical signal outside, and then transmitted to the edge processor (i.e., a monitoring device or a control system). The optical penetrator 3 is not easily interfered by the surrounding electromagnetic field, and can ensure the accuracy and stability of the signal.

[0047] See also Figure 1-2 As shown, the sensing module includes a moisture-proof component 9, a temperature grating 5 and a pressure sensing element; the moisture-proof component 9 is sleeved on the temperature grating 5 and the pressure sensing element; and the optical fiber 7 is connected to the ends of the pressure sensing element and the temperature grating 5 respectively.

[0048] In an embodiment of the present invention, the sensing module includes a moisture-proof member 9, a temperature grating 5 and a pressure sensing element. The temperature grating 5 and the pressure sensing element are encapsulated by the moisture-proof member 9, which can reduce the influence of humidity changes on the measurement results of the temperature grating 5 and the pressure sensing element. For example, when the humidity is high, a thin layer of water film may be formed on the surface of the temperature grating 5 and the pressure sensing element, and this water film will change the heat conduction characteristics around the temperature grating 5, thereby affecting the accurate measurement of the temperature by the temperature grating 5. For the pressure sensing element, humidity changes may cause changes in factors such as the surrounding air density, thereby interfering with the pressure measurement. The moisture-proof member 9 can isolate the temperature grating 5 and the pressure sensing element from the external environment with humidity changes, reduce such humidity interference, and improve the accuracy of the measurement. And the moisture-proof member 9 can create a relatively stable local working environment for the temperature grating 5 and the pressure sensing element, so that the temperature grating 5 and the pressure sensing element can work in a predictable and stable environment, thereby improving the reliability and repeatability of the measurement results. The optical fiber 7 is connected to the ends of the pressure sensing element and the temperature grating 5 respectively.

[0049] See also Figure 1-2 As shown, the pressure sensing element includes a pressure grating 6 and a thermal insulation member 8 ; the thermal insulation member 8 is sleeved on the pressure grating 6 , and the end of the pressure grating 6 is connected to the optical fiber 7 .

[0050] In the embodiment of the present invention, the pressure sensing element includes a pressure grating 6 and a temperature insulating member 8. The pressure grating 6 is packaged by the temperature insulating member 8, and the end of the pressure grating 6 is connected to the optical fiber 7. The measurement result is transmitted to the optical through-hole 3 through the optical fiber 7.

[0051] It is worth mentioning that by sleeve-mounting the thermal insulation member 8 on the pressure grating 6, the pressure grating 6 is kept under specific temperature conditions, a stable measurement reference is maintained, and the repeatability and reliability of the measurement results of the pressure grating 6 are improved. At the same time, the thermal insulation member 8 can reduce the influence of the temperature gradient on the pressure grating 6, avoid damage to the grating structure due to thermal stress in the sleeve 1, and ensure the structural integrity of the pressure grating 6.

[0052] It should be noted that the edge processor includes a decoupling module, a normalization module, a fuzzification module and a matching module; the decoupling module is used to decouple the operating condition parameters to obtain decoupled operating condition parameters; the normalization module is used to normalize the decoupled operating condition parameters to obtain relative operating condition parameters; the fuzzification module is used to fuzzify the relative operating condition parameters to obtain fuzzified operating condition parameters; the matching module is used to input the fuzzified operating condition parameters into a preset fault feature library to generate fault monitoring results.

[0053] In an embodiment of the present invention, the edge processor includes a decoupling module, a normalization module, a fuzzification module and a matching module. The operating condition parameters include temperature wavelength data, humidity wavelength data and pressure wavelength data. The decoupling module is used to input the temperature wavelength, humidity wavelength and pressure wavelength into a preset decoupling function to obtain corresponding decoupled operating condition parameters. The interference generated between the temperature grating 5, the pressure grating 6 and the humidity grating 4 is eliminated. The normalization module is used to normalize the decoupled operating condition parameters to obtain relative operating condition parameters. The relative operating condition parameters include relative temperature, relative pressure and relative humidity. The fuzzification module is used to perform ratio processing on the relative pressure and relative humidity to generate a first ratio. The relative temperature and relative humidity are ratio processed to generate a second ratio. The relative temperature and relative pressure are ratio processed to generate a third ratio. The first ratio (ie, X), the second ratio (ie, Y) and the third ratio (ie, Z) are used as fuzzy operating condition parameters. As shown in Table 1, the matching module is used to input the fuzzy working condition parameters into the preset fault feature library, match the corresponding fault type, and if the corresponding fault type is matched, the fault type is output as the fault monitoring result. If the corresponding fault type is not matched, the fault monitoring result that the casing 1 is in a normal state is output.

[0054] Table 1

[0055]

[0056] It should be noted that the decoupling function is specifically:

[0057]

[0058] in, is the decoupling pressure value, is the decoupled temperature value, To decouple the humidity value, is the pressure coefficient, is the temperature coefficient, is the humidity coefficient, is the central wavelength of pressure grating 6, is the central wavelength of temperature grating 5, is the central wavelength of humidity grating 4, is the first pressure wavelength, is the second pressure wavelength, is the third pressure wavelength, is the first temperature wavelength, is the second temperature wavelength, is the third temperature wavelength, is the first humidity wavelength, is the second humidity wavelength, It is the third humidity wavelength.

[0059] See also Figure 2 As shown, flange holes are provided at both ends of the installation bin 2;

[0060] The end of the optical fiber 7 is led out of the installation chamber 2 through the flange hole.

[0061] In the embodiment of the present invention, flange holes are provided at both ends of the installation chamber 2. The end of the optical fiber 7 is pulled out of the installation chamber 2 through the reserved flange hole. The internal optical fiber 7 is protected by armored wire sheath at the flange hole, and the internal pressure grating 6, temperature grating 5 and humidity grating 4 will not be affected by external stress and affect the measurement results. At the same time, it is convenient to connect the optical fiber 7 with external equipment (such as optical fiber 7 terminal box, optical signal processing equipment, etc.).

[0062] It should be noted that the wavelengths of the pressure grating 6 , the temperature grating 5 and the humidity grating 4 are 1530 nm, 1540 nm and 1550 nm respectively.

[0063] In the embodiment of the present invention, the pressure grating 6, the temperature grating 5 and the humidity grating 4 are respectively set in different wavelength grating areas of 1530nm, 1540nm and 1550nm in the same or different optical fibers 7. During the transmission process of the optical fiber 7, the wavelengths set by the pressure grating 6, the temperature grating 5 and the humidity grating 4 are very close, which reduces the misjudgment caused by interference between signals of different wavelengths and improves the accuracy of the measurement.

[0064] It should be noted that the glass groove 10 is mounted on the optical fiber 7 by an adhesive.

[0065] In the embodiment of the present invention, the optical fiber 7 is fixed in the glass groove 10 by an adhesive member, and the adhesive member can be a high temperature glue.

[0066] It should be noted that a humidity sensitive film is provided on the humidity grating 4; the humidity sensitive film is a polyimide film.

[0067] In the embodiment of the present invention, a polyimide film is sleeved on the humidity grating 4. The polyimide film has a unique chemical structure, and its molecular chain contains a large number of polar groups, such as amide groups. These polar groups can form hydrogen bonds with water molecules, thereby quickly adsorbing water molecules in the insulating oil, and then being detected by the humidity grating 4, to achieve accurate measurement of humidity. And in the range of relative humidity of 20%-80%, the refractive index change of the polyimide film is almost linearly related to the humidity change. The humidity grating 4 can directly convert the detected film change into a humidity value based on this linear relationship, reducing the complex calibration and data processing process.

[0068] It should be noted that the moisture barrier 9 is an acrylic cover.

[0069] In the embodiment of the present invention, the moisture barrier 9 is an acrylic cover. Acrylic has a relatively low water vapor permeability. When used as the moisture barrier 9, it can reduce the contact between water vapor and the temperature grating 5 and the pressure sensing element, and prevent humidity from affecting the measurement results of the temperature grating 5 and the pressure sensing element. In addition, the acrylic material is easy to process and can cooperate well with other sealing materials (such as rubber sealing rings, etc.) to achieve a better sealing effect, thereby enhancing the moisture barrier ability of the moisture barrier 9.

[0070] It should be noted that the thermal insulation member 8 is a thermoplastic high-temperature plastic shell.

[0071] In the embodiment of the present invention, the thermal insulation member 8 is a thermoplastic high-temperature plastic shell. Thermoplastic high-temperature plastic has a low thermal conductivity. The external high temperature can be isolated from the pressure grating 6, reducing the heat transferred into the pressure grating 6 and improving the measurement accuracy of the pressure grating 6.

[0072] In the embodiment of the present invention, the present invention integrates the sensor component into the installation bin 2, and installs the installation bin 2 at the oil extraction port of the bushing 1 to communicate with the inside of the bushing 1, so as to directly collect the operating parameters inside the bushing 1, and use the edge processor to perform fault monitoring on the collected operating parameters, generate fault monitoring results, and thus realize online monitoring of the oil-impregnated paper bushing 1. It overcomes the technical problem that the hidden dangers of the existing oil-impregnated paper bushing 1 are mainly checked by manual regular preventive tests, and the main equipment needs to be shut down to carry out preventive tests on the oil-impregnated paper bushing 1, and the oil-impregnated paper bushing 1 of the power transformer cannot be monitored online. Compared with the traditional oil-impregnated paper bushing 1, the oil-impregnated paper bushing 1 of the present invention is equipped with an installation bin 2 with an integrated sensor component at the oil extraction port, without shutting down the main equipment, and can directly collect the operating parameters inside the bushing 1, and perform fault monitoring on the bushing 1, thereby improving the reliability of the operation of the power transformer.

[0073] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0074] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0075] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0076] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0077] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oil-immersed paper casing with a condition monitoring function, characterized in that: Includes casing, sensor assembly, mounting chamber, optical feedthrough and edge processor; One end of the installation bin is threadedly connected to the oil extraction port of the casing, and the sensor assembly is fixedly installed inside the installation bin; The sensing assembly comprises a glass groove, a sensing module and a humidity grating, wherein the sensing module and the humidity grating are arranged inside the glass groove; The optical penetrator is provided at the other end of the installation chamber, and one end of the optical penetrator penetrates through the other end of the installation chamber and is connected to the sensing module and the end of the humidity grating respectively through optical fibers; The sensor assembly is used to collect the working parameters of the casing and transmit the working parameters to the edge processor; The optical via is electrically connected to the edge processor, and the edge processor is used to perform fault monitoring according to the operating condition parameters and generate a fault monitoring result.

2. The oil-immersed paper casing with state monitoring function according to claim 1 is characterized in that: The sensing module includes a moisture barrier, a temperature grating and a pressure sensing element; The temperature grating and the pressure sensing element are sleeved with the moisture-isolating member; The optical fiber is connected to the ends of the pressure sensing element and the temperature grating respectively.

3. The oil-immersed paper casing with a state monitoring function according to claim 2 is characterized in that: The pressure sensing element includes a pressure grating and a temperature insulation member; The temperature insulating component is sleeved on the pressure grating, and the end of the pressure grating is connected to the optical fiber.

4. The oil-immersed paper casing with state monitoring function according to claim 1, characterized in that: The edge processor includes a decoupling module, a normalization module, a fuzzification module and a matching module; The decoupling module is used to perform decoupling processing on the operating condition parameters to obtain decoupled operating condition parameters; The normalization module is used to normalize the decoupling operating condition parameters to obtain relative operating condition parameters; The fuzzification module is used to perform fuzzification processing on the relative operating condition parameters to obtain fuzzy operating condition parameters; The matching module is used to input the fuzzy process condition parameters into a preset fault feature library to generate a fault monitoring result.

5. The oil-immersed paper casing with state monitoring function according to claim 1, characterized in that: Flange holes are provided at both ends of the installation bin; The optical fiber end is led out of the installation chamber through the flange hole.

6. The oil-immersed paper casing with a condition monitoring function according to any one of claims 1 to 3, characterized in that: The wavelengths of the pressure grating, the temperature grating and the humidity grating are 1530nm, 1540nm and 1550nm respectively.

7. The oil-immersed paper casing with state monitoring function according to claim 1, characterized in that: The glass groove is sleeved on the optical fiber through an adhesive member.

8. The oil-immersed paper casing with state monitoring function according to claim 1, characterized in that: A humidity sensitive film is provided on the humidity grating; The humidity sensitive film is a polyimide film.

9. The oil-immersed paper casing with a state monitoring function according to claim 2, characterized in that: The moisture-isolating member is an acrylic cover.

10. The oil-immersed paper casing with a state monitoring function according to claim 3, characterized in that: The thermal insulation component is a thermoplastic high-temperature plastic shell.

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