Spectral difference analysis method and device for gas-solid interface flashover

Abstract

Disclosed in the present invention are a spectral difference analysis method and device for gas-solid interface flashover. The method comprises: acquiring several pieces of gas-gas spectral data acquired by a gas-gas gap discharge experimental device; acquiring several pieces of gas-solid spectral data acquired by a gas-solid surface flashover experiment device; performing averaging operations on the several pieces of gas-gas spectral data and the several pieces of gas-solid spectral data to obtain background spectral data and gas-solid flashover spectral data, the gas-gas spectral data corresponding to the background spectral data, and the gas-solid spectral data corresponding to the gas-solid flashover spectral data; and, on the basis of the background spectral data and the gas-solid flashover spectral data, calculating a differential spectral signal, such that a user performs gas-solid interface flashover analysis on the basis of the differential spectral signal. The present invention analyzes the effect of a spectrum generated by a gas itself on a solid flashover spectrum during the experiment of the gas-solid surface flashover experimental device, thus rendering gas-solid interface flashover analysis more accurate.

Description

Spectrum difference analysis method and device for gas-solid interface flashover TECHNICAL FIELD

[0001] The present application relates to the field of high-voltage insulation experimental research, and in particular to a spectrum difference analysis method and device for gas-solid interface flashover. BACKGROUND

[0002] In the research on gas insulation medium, the surface flashover performance of different solid medium surfaces is an important research content. Because of the difference in surface morphology and properties of solid materials, the surface flashover voltage will change during the surface flashover process. In the traditional research, the spectrum generated during the flashover process is detected to analyze the flashover process.

[0003] However, because the flashover process occurs at the gas-solid interface, the spectrum generated by the gas itself is the main part of the spectrum generated in the process, and therefore, the new spectrum generated by the solid medium will be submerged by the gas spectrum. The prior art has not been able to handle this, resulting in the problem of low accuracy of the surface flashover spectrum collected by the gas-solid interface flashover.

[0004] Therefore, there is an urgent need for a spectrum difference analysis strategy for gas-solid interface flashover to solve the problem of low accuracy of the surface flashover spectrum collected by the gas-solid interface flashover. SUMMARY

[0005] The present application provides a spectrum difference analysis method and device for gas-solid interface flashover to solve the problem of low accuracy of the surface flashover spectrum collected by the gas-solid interface flashover.

[0006] To solve the above problem, an embodiment of the present application provides a spectrum difference analysis method for gas-solid interface flashover, comprising:

[0007] Obtaining a plurality of gas-gas spectrum data collected by a gas-gas gap discharge experimental device;

[0008] Obtaining a plurality of gas-solid spectrum data collected by a gas-solid surface flashover experimental device; wherein the gas environment and the electrode material used between the gas-gas gap discharge experimental device and the gas-solid surface flashover experimental device are the same;

[0009] Performing averaging operation on a plurality of the gas-gas spectrum data to obtain background spectrum data; performing averaging operation on a plurality of the gas-solid spectrum data to obtain gas-solid flashover spectrum data;

[0010] Based on the background spectrum data and the gas-solid flashover spectrum data, calculating a difference spectrum signal, and based on the difference spectrum signal, determining the surface flashover spectrum collected by the gas-solid interface flashover.

[0011] As an improvement of the above-mentioned scheme, the calculating the differential spectrum signal based on the background spectrum data and the gas-solid flashover spectrum data comprises:

[0012] The background spectrum data and the gas-solid flashover spectrum data are substituted into a preset differential spectrum signal calculation formula to calculate the differential spectrum signal; wherein the differential spectrum signal calculation formula comprises: a = S t - S b

[0013] In the formula, S b is the background spectrum data, S t is the gas-solid flashover spectrum data, and S a is the differential spectrum signal.

[0014] As an improvement of the above-mentioned scheme, the gas-gas gap discharge experimental device comprises two gas discharge gap electrodes and a first spectrum analyzer.

[0015] The electrode heads of the two gas discharge gap electrodes are kept on the same plane and are spaced apart by a first preset distance, and each of the gas discharge gap electrodes is connected with a power supply device; the first spectrum analyzer is spaced apart from the two gas discharge gap electrodes by a second preset distance, so that the receiving range of the first spectrum analyzer can cover the entire area where the discharge of the gas-gas gap discharge experimental device occurs under the second preset distance.

[0016] As an improvement of the above-mentioned scheme, the gas-solid surface flashover experimental device comprises two surface flashover experimental electrodes, a solid insulating medium surface flashover test sample and a second spectrum analyzer.

[0017] The electrode heads of the two surface flashover experimental electrodes are arranged on the solid insulating medium surface flashover test sample and are located on the same plane, and each of the surface flashover experimental electrodes is connected with a power supply device; the second spectrum analyzer is spaced apart from the combination of the two surface flashover experimental electrodes and the solid insulating medium surface flashover test sample by a third preset distance, so that the receiving range of the second spectrum analyzer can cover the entire area where the discharge of the gas-solid surface flashover experimental device occurs under the third preset distance.

[0018] As an improvement of the above-mentioned scheme, the gas environment comprises the type of gas, the pressure of gas, the temperature of gas and the humidity of gas.

[0019] Correspondingly, an embodiment of the present application further provides a spectrum difference analysis device for gas-solid interface flashover, comprising a first data acquisition module, a second data acquisition module, a data processing module and a result generation module.

[0020] The first data acquisition module is configured to acquire a plurality of gas-gas spectrum data collected by the gas-gas gap discharge experimental device.

[0021] The second data acquisition module is configured to acquire a plurality of gas-solid spectrum data collected by the gas-solid surface flashover experimental device.

[0022] The data processing module is configured to perform averaging operation on the plurality of gas-gas spectrum data to obtain background spectrum data, and perform averaging operation on the plurality of gas-solid spectrum data to obtain gas-solid flashover spectrum data.

[0023] The result generation module is configured to calculate a differential spectrum signal based on the background spectrum data and the gas-solid flashover spectrum data, and determine a surface flashover spectrum collected by the gas-solid interface flashover based on the differential spectrum signal.

[0024] As an improvement of the above-mentioned scheme, the calculation of the differential spectrum signal based on the background spectrum data and the gas-solid flashover spectrum data comprises:

[0025] The background spectrum data and the gas-solid flashover spectrum data are substituted into a preset differential spectrum signal calculation formula to calculate the differential spectrum signal, wherein the differential spectrum signal calculation formula comprises: a t b

[0026] In the formula, S b is the background spectrum data, S t is the gas-solid flashover spectrum data, and S a is the differential spectrum signal.

[0027] As an improvement of the above-mentioned scheme, the gas-gas gap discharge experimental device comprises two gas discharge gap electrodes and a first spectrum analyzer.

[0028] The electrode heads of the two gas discharge gap electrodes are kept on the same plane and are separated by a first preset distance, and each gas discharge gap electrode is connected with a power supply device. The first spectrum analyzer is separated from the two gas discharge gap electrodes by a second preset distance, so that the receiving range of the first spectrum analyzer can cover the entire area where the gas-gas gap discharge experimental device discharges.

[0029] As an improvement of the above-mentioned scheme, the gas-solid surface flashover experimental device comprises two surface flashover experimental electrodes, a solid insulating medium surface flashover test sample, and a second spectrum analyzer. ​​

[0030] The electrode heads of the two surface flashover experiment electrodes are arranged on the solid insulating medium surface flashover test sample and are located on the same plane, and each of the surface flashover experiment electrodes is connected with a power supply device; the second spectrum analyzer is combined with the two surface flashover experiment electrodes and the solid insulating medium surface flashover test sample at a third preset distance, so that the receiving range of the second spectrum analyzer can cover the entire area of the gas-solid surface flashover experiment device at which the discharge occurs.

[0031] As an improvement of the above scheme, the gas environment includes: gas type, gas pressure, gas temperature and gas humidity.

[0032] As can be seen from the above, the present application has the following beneficial effects:

[0033] The present application provides a spectrum difference analysis method for gas-solid interface flashover, acquires a plurality of gas-gas spectrum data collected by a gas-gas gap discharge experiment device; acquires a plurality of gas-solid spectrum data collected by a gas-solid surface flashover experiment device; performs averaging operation on the plurality of gas-gas spectrum data and the plurality of gas-solid spectrum data to obtain background spectrum data and gas-solid flashover spectrum data; wherein the gas-gas spectrum data corresponds to the background spectrum data, and the gas-solid spectrum data corresponds to the gas-solid flashover spectrum data; based on the background spectrum data and the gas-solid flashover spectrum data, a difference spectrum signal is calculated, so that the user can analyze the gas-solid interface flashover based on the difference spectrum signal. The present application acquires the background spectrum data and the gas-solid flashover spectrum data by performing averaging operation on the gas-gas spectrum data collected by the gas-gas gap discharge experiment device and the gas-solid spectrum data collected by the gas-solid surface flashover experiment device, so as to analyze the influence of the spectrum generated by the gas itself on the solid flashover spectrum when the gas-solid surface flashover experiment device is experimented, so as to make the gas-solid interface flashover analysis more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0034] Fig. 1 is a flowchart of the spectrum difference analysis method for gas-solid interface flashover provided by an embodiment of the present application;

[0035] Fig. 2 is a structural schematic diagram of the spectrum difference analysis device for gas-solid interface flashover provided by an embodiment of the present application;

[0036] Fig. 3 is a structural schematic diagram of the gas-gas gap discharge experiment device provided by an embodiment of the present application;

[0037] Fig. 4 is a structural schematic diagram of the gas-solid surface flashover experiment device provided by an embodiment of the present application;

[0038] Fig. 5 is a result schematic diagram of the gas-gas spectrum data provided by an embodiment of the present application;

[0039] Fig. 6 is a result schematic diagram of gas-solid spectrum data provided by an embodiment of the present application;

[0040] Fig. 7 is a result schematic diagram of differential spectrum data provided by an embodiment of the present application;

[0041] Fig. 8 is a schematic diagram of a terminal device structure provided by an embodiment of the present application. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0043] Embodiment one

[0044] Referring to Fig. 1, Fig. 1 is a flow schematic diagram of a spectrum difference analysis method for gas-solid interface flashover provided by an embodiment of the present application. As shown in Fig. 1, the present embodiment includes steps 101 to 104, and each step is specifically as follows:

[0045] Step 101: Obtain a plurality of gas-gas spectrum data collected by a gas-gas gap discharge experimental device.

[0046] In the present embodiment, the gas-gas gap discharge experimental device includes two gas discharge gap electrodes and a first spectrum analyzer.

[0047] In the present embodiment, the electrode heads of the two gas discharge gap electrodes are kept on the same plane and are spaced apart by a first preset distance, and each of the gas discharge gap electrodes is connected with a power supply device; the first spectrum analyzer is spaced apart from the two gas discharge gap electrodes by a second preset distance, so that the receiving range of the first spectrum analyzer can cover the entire area where the gas-gas gap discharge experimental device discharges under the second preset distance.

[0048] In a specific embodiment, the first preset distance and the second preset distance can be adjusted adaptively according to the user's needs.

[0049] For better illustration, when the first preset distance is set, it should be kept in the same order of magnitude as the curvature radius of the electrode, about several millimeters to several centimeters. The specific distance needs to be able to stably generate discharge between the electrodes under the experimental gas and power supply conditions.

[0050] The second preset distance should ensure that the detector does not have a serious impact on the electric field of the discharge area, and at the same time ensure that the detector can effectively capture the photon signals generated by the discharge. It is about one order of magnitude higher than the first preset distance, in the order of tens of magnitude.

[0051] In a specific embodiment, referring to FIG. 3, which is a structural schematic diagram of a gas-solid surface flashover experiment device, the device comprises two gas discharge gap electrodes 301 and a first spectrum analyzer 302.

[0052] Step 102: Obtain a plurality of gas-solid spectrum data collected by the gas-solid surface flashover experiment device; wherein the gas environment and the electrode material used by the gas-gas gap discharge experiment device and the gas-solid surface flashover experiment device are the same.

[0053] In this embodiment, the gas-solid surface flashover experiment device comprises two surface flashover experiment electrodes, a solid insulating medium surface flashover test sample, and a second spectrum analyzer.

[0054] The electrode heads of the two surface flashover experiment electrodes are arranged on the solid insulating medium surface flashover test sample and located on the same plane, and each surface flashover experiment electrode is connected with a power supply device. The second spectrum analyzer is arranged at a third preset distance from the combination of the two surface flashover experiment electrodes and the solid insulating medium surface flashover test sample, so that the receiving range of the second spectrum analyzer can cover the entire area of the gas-solid surface flashover experiment device under the third preset distance.

[0055] In a specific embodiment, the third preset distance can be adjusted adaptively according to user requirements. The difference between the third preset distance and the second preset distance should be greater than or equal to 0 and less than a distance difference threshold value. The distance difference threshold value can be adjusted adaptively according to user requirements, but cannot be too large, so as to ensure that the conditions for detecting photons are approximately the same under different conditions.

[0056] In a specific embodiment, referring to FIG. 4, which is a structural schematic diagram of a gas-solid surface flashover experiment device, the device comprises two surface flashover experiment electrodes 401, a solid insulating medium surface flashover test sample 402, and a second spectrum analyzer 403.

[0057] In this embodiment, the gas environment comprises the type of gas, the pressure of the gas, the temperature of the gas, and the humidity of the gas.

[0058] Step 103: Perform averaging operation on the plurality of gas-gas spectrum data to obtain background spectrum data; and perform averaging operation on the plurality of gas-solid spectrum data to obtain gas-solid flashover spectrum data.

[0059] In a specific embodiment, the gas-gas gap discharge experimental device and the gas-solid surface flashover experimental device can perform multiple experiments (the number can be 10-30 times), so as to obtain multiple sets of gas-gas spectrum data and multiple sets of gas-solid spectrum data;

[0060] Step 104: based on the background spectrum data and the gas-solid flashover spectrum data, calculating a differential spectrum signal, and determining a surface flashover spectrum collected by the gas-solid interface flashover based on the differential spectrum signal.

[0061] In the embodiment, the calculation of the differential spectrum signal based on the background spectrum data and the gas-solid flashover spectrum data comprises:

[0062] The background spectrum data and the gas-solid flashover spectrum data are substituted into a preset differential spectrum signal calculation formula to calculate the differential spectrum signal; wherein the differential spectrum signal calculation formula comprises: a Sdiff = Sbg - Sgs t b

[0063] In the formula, Sbg is the background spectrum data, Sgs is the gas-solid flashover spectrum data, and Sdiff is the differential spectrum signal. b t a

[0064] For better illustration, refer to FIGS. 5, 6 and 7, which respectively correspond to the background spectrum data results collected by the gas-gas gap discharge experimental device, the gas-solid flashover spectrum data results collected by the gas-solid surface flashover experimental device, and the differential spectrum signal results after differential calculation under the condition of the same gas environment and the same electrode material. As can be seen from the above three figures, the first two sets of experimental data are not obvious and difficult to perceive due to the flooding of the gas spectrum. After the differential, the spectrum information introduced by the solid interface is highlighted, which facilitates subsequent analysis.

[0065] Referring to FIG. 2, which is a structural schematic diagram of a spectrum difference analysis device for gas-solid interface flashover according to an embodiment of the present application, the device comprises a first data acquisition module 201, a second data acquisition module 202, a data processing module 203 and a result generation module 204.

[0066] The first data acquisition module is configured to acquire a plurality of gas-gas spectrum data collected by a gas-gas gap discharge experimental device.

[0067] The second data acquisition module is configured to acquire a plurality of gas-solid spectrum data collected by a gas-solid surface flashover experimental device; wherein the gas environment and the electrode material used by the gas-gas gap discharge experimental device and the gas-solid surface flashover experimental device are the same.​​​​

[0068] The data processing module is used to perform an averaging operation on several gas-to-gas spectral data to obtain background spectral data; and to perform an averaging operation on several gas-solid spectral data to obtain gas-solid flashover spectral data.

[0069] The result generation module is used to calculate a differential spectral signal based on the background spectral data and the gas-solid flashover spectral data, and to determine the surface flashover spectrum acquired by the gas-solid interface based on the differential spectral signal.

[0070] As an improvement to the above scheme, the step of calculating the differential spectral signal based on the background spectral data and the gas-solid flashover spectral data includes:

[0071] The background spectral data and gas-solid flashover spectral data are substituted into a preset differential spectral signal calculation formula to calculate the differential spectral signal; wherein, the differential spectral signal calculation formula includes: S a =S t -S b

[0072] In the formula, S b For background spectral data, S t For gas-solid flashover spectral data, S a It is a differential spectral signal.

[0073] As an improvement to the above scheme, the gas-to-gas gap discharge experimental device includes: two gas discharge gap electrodes and a first spectrometer;

[0074] The electrode tips of the two gas discharge gap electrodes are kept on the same plane and spaced apart by a first preset distance. Each gas discharge gap electrode is connected to a power supply device. The first spectrometer is spaced apart from the two gas discharge gap electrodes by a second preset distance, so that the receiving range of the first spectrometer can cover the entire area where the gas-to-gas gap discharge experimental device discharges at the second preset distance.

[0075] As an improvement to the above scheme, the gas and solid surface flashover test apparatus includes: two surface flashover test electrodes, a solid insulating dielectric surface flashover sample, and a second spectrometer.

[0076] The electrode heads of the two surface flashover experiment electrodes are arranged on the solid insulating medium surface flashover test sample and are located on the same plane, and each surface flashover experiment electrode is connected with a power supply device; the second spectrum analyzer is combined with the two surface flashover experiment electrodes and the solid insulating medium surface flashover test sample at a third preset distance, so that the receiving range of the second spectrum analyzer can cover the entire area of the gas-solid surface flashover experiment device discharge at the third preset distance.

[0077] As an improvement of the above scheme, the gas environment includes: gas type, gas pressure, gas temperature and gas humidity.

[0078] The embodiment obtains a plurality of gas-gas spectrum data collected by the gas-gas gap discharge experiment device, obtains a plurality of gas-solid spectrum data collected by the gas-solid surface flashover experiment device, and performs averaging operation on the plurality of gas-gas spectrum data and the plurality of gas-solid spectrum data to obtain background spectrum data and gas-solid flashover spectrum data; the gas-gas spectrum data corresponds to the background spectrum data, and the gas-solid spectrum data corresponds to the gas-solid flashover spectrum data; based on the background spectrum data and the gas-solid flashover spectrum data, a differential spectrum signal is calculated, so that the user can analyze the gas-solid interface flashover based on the differential spectrum signal. The present application obtains the background spectrum data and the gas-solid flashover spectrum data by performing averaging operation on the gas-gas spectrum data collected by the gas-gas gap discharge experiment device and the gas-solid spectrum data collected by the gas-solid surface flashover experiment device, so as to analyze the influence of the spectrum generated by the gas itself on the solid flashover spectrum during the experiment of the gas-solid surface flashover experiment device through the calculated differential spectrum signal, thereby making the gas-solid interface flashover analysis more accurate.

[0079] Embodiment two

[0080] Referring to FIG. 8, FIG. 8 is a schematic diagram of a terminal device structure according to an embodiment of the present application.

[0081] The terminal device of the embodiment includes a processor 801, a memory 802, and a computer program stored in the memory 802 and executable on the processor 801. The processor 801 implements the steps of the above-mentioned various spectrum difference analysis methods for gas-solid interface flashover in the embodiments when executing the computer program, for example, all steps of the spectrum difference analysis method for gas-solid interface flashover shown in FIG. 1. Alternatively, the processor implements the functions of the modules in the above-mentioned various device embodiments when executing the computer program, for example, all modules of the spectrum difference analysis device for gas-solid interface flashover shown in FIG. 2.

[0082] In addition, the embodiment of the present application further provides a computer readable storage medium, which comprises a stored computer program, wherein the computer readable storage medium controls a device where the computer readable storage medium is located to execute the spectrum difference analysis method for gas-solid interface flashover as any one of the above embodiments when the computer program runs.

[0083] Those skilled in the art can understand that the schematic diagram is only an example of the terminal device, and does not constitute a limitation on the terminal device, and can include more or fewer components than the diagram, or combine certain components, or different components, for example, the terminal device can also include an input and output device, a network access device, a bus, etc.

[0084] The processor 801 can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor and the like. The processor 801 is a control center of the terminal device, and connects all parts of the terminal device through various interfaces and lines.

[0085] The memory 802 can be used to store computer programs and / or modules, and the processor 801 realizes various functions of the terminal device by running or executing the computer programs and / or modules stored in the memory, and calling data stored in the memory 802. The memory 802 can mainly include a program storage area and a data storage area, wherein the program storage area can store operating systems, at least one application program required by a function (such as a sound playing function, an image playing function, etc.), etc.; and the data storage area can store data created according to the use of the terminal device (such as audio data, a phone book, etc.), etc. In addition, the memory can include a high-speed random access memory, and can also include a nonvolatile memory, for example, a hard disk, a memory, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, at least one disk storage device, a flash memory device, or other volatile solid-state memory devices.

[0086] The modules / units integrated in the terminal device, if in the form of software function units and sold or used as independent products, can be stored in a computer readable storage medium. Based on this understanding, all or part of the processes in the above-mentioned embodiment methods can also be completed by a computer program instructing related hardware. The computer program can be stored in a computer readable storage medium. When the computer program is executed by a processor, the steps of the above-mentioned various method embodiments can be implemented. The computer program includes computer program code, which can be in the form of source code, object code, executable files or some intermediate forms, etc. The computer readable medium can include any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0087] It should be noted that the above-described device embodiments are only schematic, and the units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, i.e. they can be located in one place or distributed on multiple network units. Part or all of the modules can be selected to achieve the purpose of the embodiment scheme according to actual needs. In addition, the connection relationship between the modules in the device embodiment provided by the present application indicates that there is a communication connection between them, which can be realized as one or more communication buses or signal lines. Those skilled in the art can understand and implement it without creative labor.

[0088] The above is the preferred embodiment of the present application. It should be noted that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which are also considered within the scope of protection of the present application.

Claims

1. A spectral difference analysis method for gas-solid interfacial flashover, characterized in that, The method comprises the following steps: acquiring a plurality of gas-gas spectrum data collected by a gas-gas gap discharge experimental device; acquiring a plurality of gas-solid spectrum data collected by a gas-solid surface flashover experimental device; wherein the gas environment and the electrode material of the gas-gas gap discharge experimental device and the gas-solid surface flashover experimental device are the same; performing averaging operation on the plurality of gas-gas spectrum data to obtain background spectrum data; performing averaging operation on the plurality of gas-solid spectrum data to obtain gas-solid flashover spectrum data; calculating a differential spectrum signal based on the background spectrum data and the gas-solid flashover spectrum data, and determining a surface flashover spectrum collected by the gas-solid interface flashover based on the differential spectrum signal.

2. The method for spectral difference analysis of gas-solid interfacial flashover according to claim 1, characterized in that, The calculation of the differential spectrum signal based on the background spectrum data and the gas-solid flashover spectrum data comprises: The background spectral data and the gas-solid flashover spectral data are substituted into a preset differential spectral signal calculation formula to calculate a differential spectral signal; wherein the differential spectral signal calculation formula comprises: a = S t - S b In the formula, S b is background spectral data, S t is gas-solid flashover spectral data, S a is a differential spectral signal.

3. The method for spectral difference analysis of gas-solid interfacial flashover according to claim 2, characterized in that, The gas-gas gap discharge experimental device comprises two gas discharge gap electrodes and a first spectrum analyzer. The electrode heads of the two gas discharge gap electrodes are kept on the same plane and are separated by a first preset distance, and each gas discharge gap electrode is connected to a power supply device; the first spectrum analyzer is separated from the two gas discharge gap electrodes by a second preset distance, so that the receiving range of the first spectrum analyzer can cover the entire area where the discharge of the gas-gas gap discharge experimental device occurs.

4. The method for spectral difference analysis of gas-solid interfacial flashover according to claim 2, characterized in that, The gas-solid surface flashover experimental device comprises two surface flashover experimental electrodes, a solid insulating medium surface flashover sample, and a second spectrum analyzer. The electrode heads of the two surface flashover experimental electrodes are arranged on the solid insulating medium surface flashover sample and are located on the same plane, and each surface flashover experimental electrode is connected to a power supply device; the second spectrum analyzer is separated from the combination of the two surface flashover experimental electrodes and the solid insulating medium surface flashover sample by a third preset distance, so that the receiving range of the second spectrum analyzer can cover the entire area where the discharge of the gas-solid surface flashover experimental device occurs.

5. The method for spectral difference analysis of gas-solid interface flashover according to any one of claims 1 to 4, characterized in that, The gas environment comprises the type of gas, the pressure of gas, the temperature of gas, and the humidity of gas.

6. A spectral difference analysis device for gas-solid interfacial flashover, characterized in that, The method comprises the following steps: a first data acquisition module, a second data acquisition module, a data processing module, and a result generation module; The first data acquisition module is configured to acquire a plurality of gas-gas spectrum data collected by a gas-gas gap discharge experimental device; The second data acquisition module is configured to acquire a plurality of gas-solid spectrum data collected by a gas-solid surface flashover experimental device; wherein the gas environment and the electrode material of the gas-gas gap discharge experimental device and the gas-solid surface flashover experimental device are the same; The data processing module is configured to perform averaging operation on the plurality of gas-gas spectrum data to obtain background spectrum data; and perform averaging operation on the plurality of gas-solid spectrum data to obtain gas-solid flashover spectrum data; The result generation module is configured to calculate a differential spectrum signal based on the background spectrum data and the gas-solid flashover spectrum data, and determine a surface flashover spectrum of the gas-solid interface flashover based on the differential spectrum signal.

7. The device for spectral difference analysis of gas-solid interfacial flashover according to claim 6, characterized in that, The calculation of the differential spectrum signal based on the background spectrum data and the gas-solid flashover spectrum data comprises: The background spectrum data and the gas-solid flashover spectrum data are substituted into a preset differential spectrum signal calculation formula to calculate the differential spectrum signal; wherein the differential spectrum signal calculation formula comprises: S a = S t - S b In the formula, S b is background spectral data, S t is gas-solid flashover spectral data, S a is a differential spectral signal.

8. The device for spectral difference analysis of gas-solid interfacial flashover according to claim 7, characterized in that, The gas-gas gap discharge experimental device comprises two gas discharge gap electrodes and a first spectrum analyzer. The electrode heads of the two gas discharge gap electrodes are kept on the same plane and are spaced apart by a first preset distance, and each of the gas discharge gap electrodes is connected to the power supply device; the first spectrum analyzer is spaced apart from the two gas discharge gap electrodes by a second preset distance, so that the receiving range of the first spectrum analyzer can cover the entire area where the discharge of the gas-gas gap discharge experimental device occurs under the second preset distance.

9. The device for spectral difference analysis of gas-solid interfacial flashover according to claim 7, characterized in that, The gas-solid surface flashover experimental device comprises two surface flashover experimental electrodes, a solid insulating medium surface flashover sample, and a second spectrum analyzer. The electrode heads of the two surface flashover experimental electrodes are arranged on the solid insulating medium surface flashover sample and are located on the same plane, and each of the surface flashover experimental electrodes is connected to the power supply device; the second spectrum analyzer is spaced apart from the combination of the two surface flashover experimental electrodes and the solid insulating medium surface flashover sample by a third preset distance, so that the receiving range of the second spectrum analyzer can cover the entire area where the discharge of the gas-solid surface flashover experimental device occurs under the third preset distance.

10. The device for spectral difference analysis of gas-solid interface flashover according to any one of claims 6 to 9, characterized in that, The gas environment comprises a gas type, a gas pressure, a gas temperature, and a gas humidity.

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