Leakage detection method, device and equipment for environment-friendly gas insulated switchgear

Abstract

The invention relates to a leakage detection method, device and equipment for environment-friendly gas insulated switchgear. The environment-friendly gas insulated switchgear GIS is filled with air containing isotopic tracer gas, the concentration of the isotopic tracer gas in the filled air is different from that of the isotopic tracer gas in the natural environment, and the method comprises the following steps: receiving an ultrasonic signal collected by an ultrasonic sensor installed in the environment where the environment-friendly GIS is located; acquiring a first abundance of an isotopic tracer gas in an environment where the environmental protection GIS is located under the condition that leakage of the environmental protection GIS is determined according to the ultrasonic signal; comparing the first abundance with the natural abundance to obtain a first comparison result; wherein the natural abundance is the abundance of the isotopic tracer gas in the natural environment; and determining a leakage detection result of the environmental protection GIS according to the first comparison result. By adopting the method, the leakage of the environment-friendly GIS can be detected in time, the operation reliability of the environment-friendly GIS is improved, and the space safety of the environment where the environment-friendly GIS is located is improved.

Description

Technical Field

[0001] The present application relates to the technical field of power equipment, and in particular to a leakage detection method, device and equipment for environmentally friendly gas-insulated switchgear. Background Art

[0002] Gas-insulated switchgear (GIS) is widely used in power systems due to its compact structure, high reliability, and enhanced safety. It is filled with SF6 gas as an insulating and arc-extinguishing medium. Because SF6 is a high-energy greenhouse gas with a significant environmental impact, the power industry is promoting the use of air as an alternative to SF6 to reduce its environmental impact. GIS filled with air as both an insulating and arc-extinguishing medium is referred to as environmentally friendly GIS. However, because air lacks distinct chemical signatures, leaks in environmentally friendly GIS are difficult to detect using traditional GIS leak detection methods, reducing the operational reliability of the GIS and the safety of the environment in which it resides. Summary of the Invention

[0003] Based on this, it is necessary to provide a leakage detection method, device and equipment for environmentally friendly gas insulated switchgear to address the above technical problems, which can detect leakage of environmentally friendly GIS in a timely manner, improve the operational reliability of environmentally friendly GIS, and the spatial safety of the environment in which the environmentally friendly GIS is located.

[0004] In a first aspect, the present application provides a leakage detection method for an environmentally friendly gas-insulated switchgear (GIS), wherein the environmentally friendly gas-insulated switchgear (GIS) is filled with air containing an isotope tracer gas, and the concentration of the isotope tracer gas in the filled air is different from the concentration of the isotope tracer gas in the natural environment. The method comprises:

[0005] Receive ultrasonic signals collected by ultrasonic sensors installed in the environment where the environmental GIS is located;

[0006] When it is determined based on the ultrasonic signal that the environmental protection GIS is leaking, the first abundance of the isotope tracer gas in the environment where the environmental protection GIS is located is obtained;

[0007] Comparing the first abundance with the natural abundance to obtain a first comparison result; wherein the natural abundance is the abundance of the isotope tracer gas in a natural environment;

[0008] According to the first comparison result, the leakage detection result of the environmental protection GIS is determined.

[0009] In one embodiment, obtaining a first abundance of an isotope tracer gas in an environment where an environmentally friendly GIS is located includes:

[0010] Control the gas collection equipment to collect the ambient air in the environment where the environmental GIS is located, and transmit the ambient air to the isotope ratio mass spectrometer;

[0011] The abundance of the isotope tracer gas in the ambient air detected by the isotope ratio mass spectrometer is received to obtain a first abundance.

[0012] In one embodiment, the number of ultrasonic sensors is at least two; controlling the gas collection device to collect ambient air in the environment where the environmentally friendly GIS is located includes:

[0013] Controlling the gas collection device to collect ambient air around the target ultrasonic sensor;

[0014] Among them, the target ultrasonic sensor is an ultrasonic sensor that collects ultrasonic signals to determine whether there is a leak in the environmental protection GIS.

[0015] In one embodiment, there are multiple target ultrasonic sensors; receiving the abundance of the isotope tracer gas in the ambient air detected by the isotope ratio mass spectrometer to obtain a first abundance includes:

[0016] receiving the abundance of the isotope tracer gas in the ambient air surrounding each target ultrasonic sensor as detected by the isotope ratio mass spectrometer;

[0017] An average value is determined for the received multiple abundances to obtain a first abundance.

[0018] In one embodiment, when no ultrasonic signal collected by an ultrasonic sensor installed in the environment where the environmentally friendly GIS is located is received, the leakage detection method of the environmentally friendly gas insulated switchgear further includes:

[0019] According to the preset period, the second abundance of the isotope tracer gas in the environment of the environmental GIS is obtained;

[0020] comparing the second abundance and the natural abundance to obtain a second comparison result;

[0021] According to the second comparison result, the leakage detection result of the environmental protection GIS is determined.

[0022] In one embodiment, determining the leakage detection result of the environmental GIS according to the first comparison result includes any one of the following:

[0023] When the first comparison result shows that the first abundance is different from the natural abundance, it is determined that the leakage detection result of the environmental protection GIS is that there is a leakage;

[0024] If the first comparison result shows that the first abundance is greater than the natural abundance, and the difference between the first abundance and the natural abundance is greater than the first threshold, the leakage detection result of the environmental GIS is determined to be a leakage; wherein the concentration of the isotope tracer gas in the filling air of the environmental GIS is greater than the concentration corresponding to the natural abundance;

[0025] When the first comparison result is that the first abundance is less than the natural abundance, and the difference between the natural abundance and the first abundance is greater than the second threshold, the leakage detection result of the environmental protection GIS is determined to be a leakage; wherein, the concentration of the isotope tracer gas in the filling air of the environmental protection GIS is less than the concentration corresponding to the natural abundance.

[0026] In a second aspect, the present application further provides a leakage detection device for an environmentally friendly gas-insulated switchgear (GIS), wherein the environmentally friendly gas-insulated switchgear (GIS) is filled with air containing an isotope tracer gas, and the concentration of the isotope tracer gas in the filled air is different from the concentration of the isotope tracer gas in the natural environment. The device comprises:

[0027] A signal receiving module is used to receive ultrasonic signals collected by ultrasonic sensors installed in the environment where the environmental GIS is located;

[0028] The abundance acquisition module is used to obtain the first abundance of the isotope tracer gas in the environment where the environmental protection GIS is located when it is determined that there is a leak in the environmental protection GIS based on the ultrasonic signal;

[0029] an abundance comparison module, configured to compare the first abundance with the natural abundance to obtain a first comparison result; wherein the natural abundance is the abundance of the isotope tracer gas in a natural environment;

[0030] The leakage detection module is used to determine the leakage detection result of the environmental protection GIS according to the first comparison result.

[0031] In a third aspect, the present application further provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps in the various method embodiments provided in the first aspect are implemented.

[0032] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps in the various method embodiments provided in the first aspect above.

[0033] In a fifth aspect, the present application further provides a computer program product, comprising a computer program, which, when executed by a processor, implements the steps in the various method embodiments provided in the first aspect above.

[0034] The aforementioned gas-insulated switchgear (GIS) leak detection method, apparatus, and device employ a method of filling the GIS with air containing an isotope tracer gas and installing an ultrasonic sensor in the GIS's environment. The method receives ultrasonic signals collected by the ultrasonic sensor and, upon determining a leak in the GIS based on the ultrasonic signal, obtains a first abundance of the isotope tracer gas in the GIS's environment. The method then compares the first abundance with the natural abundance to obtain a first comparison result, which is then used to determine the GIS's leak detection result. This method utilizes ultrasonic signals to detect GIS leaks, enabling low-power, real-time, and all-weather online monitoring. It can promptly capture acoustic anomalies indicating GIS leaks and rapidly respond to sudden GIS leaks. Furthermore, by introducing the isotope tracer gas into the GIS and further verifying the detection results obtained using the ultrasonic signal using the isotope tracer gas's abundance, the method achieves highly sensitive confirmation of minor GIS leaks, avoids false alarms caused by ambient noise, and significantly improves the reliability of detection results. Therefore, through the combination of ultrasonic signal analysis and isotope tracing technology, during the leakage detection process of environmental GIS, it is possible to effectively identify tiny leaks generated by environmental GIS on the basis of high sensitivity and high reliability, and achieve comprehensive coverage and graded response to leakage of environmental GIS equipment. Therefore, it is possible to detect leakage of environmental GIS in a timely manner, improve the operational reliability of environmental GIS, and the spatial safety of the environment in which the environmental GIS is located. In addition, it has good engineering adaptability and promotion prospects, which is of great significance for promoting the large-scale application of environmental GIS and ensuring the safe operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments of the present application or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 A diagram illustrating an application environment of a leakage detection method for an environmentally friendly gas-insulated switchgear provided in some embodiments of the present application;

[0037] Figure 2 A schematic flow chart of a leakage detection method for an environmentally friendly gas-insulated switchgear provided in some embodiments of the present application;

[0038] Figure 3 A schematic diagram of a process for obtaining a first abundance provided in some embodiments of the present application;

[0039] Figure 4 A schematic diagram of a process for obtaining a first abundance provided in other embodiments of the present application;

[0040] Figure 5 A schematic flow chart of a leakage detection method for an environmentally friendly gas-insulated switchgear provided in other embodiments of the present application;

[0041] Figure 6 A structural block diagram of a leakage detection device for an environmentally friendly gas-insulated switchgear provided in some embodiments of the present application;

[0042] Figure 7 An internal structural diagram of a computer device provided for some embodiments of the present application;

[0043] Figure 8 An internal structure diagram of a computer device provided for some other embodiments of the present application. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0045] It should be noted that the terms "first", "second", etc. used in this application may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from the second element. The terms "including" and "having" used in this application and any variations thereof are intended to cover non-exclusive inclusions. The term "plurality" used in this application refers to two or more. The term "and / or" used in this application refers to one or any combination of multiple solutions.

[0046] GIS is filled with SF6 gas as an insulating and arc-extinguishing medium. However, because SF6 is a high-energy greenhouse gas with significant environmental impact, the power industry is currently promoting the use of air as an alternative to SF6 to reduce its use. GIS filled with air as an insulating and arc-extinguishing medium are known as environmentally friendly GIS. However, because air lacks distinct chemical signatures, leaks in environmentally friendly GIS are difficult to detect using traditional GIS leak detection methods, reducing the operational reliability of environmentally friendly GIS and the safety of the environment in which it resides.

[0047] To address the aforementioned technical issues, in an exemplary embodiment, a leakage detection method for environmentally friendly gas-insulated switchgear is provided. This method can be applied to a computer device capable of data processing and analysis, which can be implemented as a server or a terminal. The terminal can be, but is not limited to, various personal computers, laptops, smartphones, tablets, and the like. The server can be a standalone physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services.

[0048] In an exemplary embodiment, the present invention provides a leakage detection method for an environmentally friendly gas insulated switchgear, which can be applied to Figure 1 In the application environment shown. Among them, the ultrasonic sensor 102 and the gas abundance detection device 106 communicate with the server 104 through the network respectively. The data storage system can store the data that the server 104 needs to process. The data storage system can be integrated on the server 104, or it can be placed on the cloud or other network servers. Among them, the ultrasonic sensor 102 stores the collected ultrasonic signal in the data storage system, and the gas abundance detection device 106 stores the gas abundance of the detected isotope tracer gas in the data storage system, and the data storage system can also store the natural abundance. Then the server 104 obtains the above-mentioned ultrasonic signal, gas abundance and natural abundance from the data storage system to execute a leakage detection method for environmentally friendly gas-insulated switchgear provided in an embodiment of the present application.

[0049] In an exemplary embodiment, a leakage detection method for an environmentally friendly gas-insulated switchgear is provided. In this embodiment, the environmentally friendly GIS is filled with air containing an isotope tracer gas.

[0050] Among them, the so-called isotope tracer gas refers to a gas with a specific isotopic composition that is artificially labeled or naturally present. Its core function is to act as a "tracer" to track the migration, diffusion, transformation and other processes of the gas. For example, 18 O2, 2 H2 et al.

[0051] Therefore, to overcome the problem of the air filling the environmentally friendly GIS lacking a clear chemical signature, the GIS can be filled with air containing an isotope tracer gas, where the concentration of the isotope tracer gas differs from that found in the natural environment. In other words, while air is used to replace SF6 gas as the insulating and arc-extinguishing medium in the environmentally friendly GIS, an isotope tracer gas is introduced. This isotope tracer gas is an insulating gas that, when mixed with air, forms an insulating medium with detectable properties, without affecting the insulation performance of the environmentally friendly GIS.

[0052] Optionally, the isotope tracer gas filled in the environmental GIS is an isotope tracer gas with low abundance in natural air, so as to improve the accuracy of environmental GIS leakage detection based on the good tracing properties of the isotope tracer gas. For example, the isotope tracer gas filled can be 18 O2.

[0053] Optionally, the environmentally friendly GIS is filled with natural air and isotope tracer gas according to a set ratio.

[0054] Optionally, the air filled in the environmentally friendly GIS is clean air. Clean air refers to air that has been free of pollutants and impurities and whose composition meets specific cleanliness standards. This can improve the insulation strength and fire-fighting performance of the environmentally friendly GIS compared to air filled with natural air.

[0055] Furthermore, Figure 2 As shown, this method is applied to Figure 1 Taking the server 104 in the example as an example, the following steps are included:

[0056] S201, receiving ultrasonic signals collected by ultrasonic sensors installed in the environment where the environmental GIS is located.

[0057] As you can understand, the air filled in the environmentally friendly GIS is typically compressed air. Therefore, when a leak occurs, the air inside the GIS escapes through cracks in the GIS shell and diffuses into the surrounding environment. This air leakage generates high-frequency sound waves that can be captured by ultrasonic sensors. Therefore, an ultrasonic sensor can be installed in the environment where the environmentally friendly GIS is located. When high-frequency sound waves appear in the environment where the environmentally friendly GIS is located, the installed ultrasonic sensor can collect these high-frequency sound waves and transmit the collected ultrasonic signals to the server. In this way, the server can receive the ultrasonic signals collected by the ultrasonic sensor installed in the environment where the environmentally friendly GIS is located.

[0058] Optionally, environmental GIS leakage generally occurs in welding gaps, sealing surfaces sealed with sealing rings, and gas sealing valves. Therefore, the ultrasonic sensor can be installed at the location of the leakage point where the leakage failure is prone to occur, or installed near the leakage point where the leakage point is located.

[0059] S202 , when it is determined based on the ultrasonic signal that the environmental protection GIS has a leak, obtain a first abundance of the isotope tracer gas in the environment where the environmental protection GIS is located.

[0060] As mentioned above, when the ultrasonic signal is received, it can be indicated that the environmental GIS may be leaking. Then, the leakage status of the environmental GIS can be determined based on the received ultrasonic signal.

[0061] Optionally, a GIS leak detection model can be pre-trained using ultrasonic signals as samples and leak status (leakage present or absent) as labels. This way, after receiving an ultrasonic signal, it can be input into the GIS leak detection model to generate a detection result, which then characterizes the leakage status of the GIS. For example, ultrasonic signals of GIS leaks at different leak levels (micro, medium, and large) and locations (flanges, valves, and busbars) can be collected as positive samples, while background ultrasonic signals (such as metal vibration, corona, and ambient wind noise) during normal GIS operation can be collected as negative samples.

[0062] When an environmental GIS leak is determined based on an ultrasonic signal, the ambient noise in the environment in which the GIS is located may interfere with the ultrasonic signal, thereby causing a false alarm of a GIS leak. Therefore, isotope tracer gas is used to verify the presence of a leak in the environmental GIS determined based on the ultrasonic signal, so as to improve the accuracy of GIS leak detection.

[0063] Based on this, when it is determined that there is a leak in the environmental protection GIS based on the ultrasonic signal, the first abundance of the above-mentioned isotope tracer gas in the environment where the environmental protection GIS is located can be further obtained.

[0064] The so-called "abundance" usually refers to the relative content or proportion of a substance (such as an element, isotope, compound, etc.) in a mixture or system. Its core meaning is "the proportion of a specific component in the whole." Based on this, the so-called abundance of isotope tracer gas refers to the amount of isotope-labeled tracer gas (such as ) in a specific system (such as air, pipeline, soil, etc.). 18 O2, 2 H2, etc.) in the overall gas composition.

[0065] The first abundance can be obtained in a variety of ways, which are not specifically limited.

[0066] For example, the first abundance is obtained using Tunable Diode Laser Absorption Spectroscopy (TDLAS). A tunable diode laser emits laser light of a specific wavelength. When it passes through an air sample containing the air in the environment where the environmentally friendly GIS is located, the laser intensity is attenuated due to selective absorption by gas molecules. Different isotopic molecules exhibit slight differences in the positions of their absorption peaks (isotope shifts). By measuring the absorption intensity, the abundance of the isotopic tracer gas can be calculated as the first abundance.

[0067] For example, the first abundance can be obtained using nuclear magnetic resonance (NMR). In a strong magnetic field, isotope nuclei absorb radio frequency pulses of a specific frequency, generating a nuclear magnetic resonance signal whose intensity is proportional to the number of isotope atoms. By comparing the signal intensity ratio of the isotope tracer gas to that of the reference isotope, the abundance of the isotope tracer gas is calculated as the first abundance.

[0068] It should be noted that the above examples are merely examples of methods for obtaining the first abundance and are not limiting. Any method that can determine the first abundance of the isotope tracer gas in the environment in which the environmental GIS is located falls within the scope of protection of this application.

[0069] S203: Compare the first abundance with the natural abundance to obtain a first comparison result.

[0070] Among them, natural abundance is the abundance of isotope tracer gas in the natural environment.

[0071] It is understandable that the aforementioned isotope tracer gas may exist at a certain concentration in the air of a natural environment. Thus, the isotope tracer gas in a natural environment has a certain abundance, referred to as natural abundance. In the absence of a leak in an environmentally friendly GIS, the environment in which the environmentally friendly GIS resides is a natural environment, and thus, the first abundance of the isotope tracer gas in the environment in which the environmentally friendly GIS resides is consistent with the natural abundance. Accordingly, because the concentration of the isotope tracer gas in the air filling the environmentally friendly GIS differs from that in the natural environment, if the environmentally friendly GIS leaks, the leakage of the air filling the GIS into the environment in which the environmentally friendly GIS resides will alter the first abundance of the environment in which the environmentally friendly GIS resides, causing the first abundance to become inconsistent with the natural abundance.

[0072] Based on this, in order to verify the presence of leakage in the environmental protection GIS determined based on the ultrasonic signal, the first abundance and the natural abundance can be compared to obtain a first comparison result.

[0073] S204: Determine the leakage detection result of the environmental protection GIS based on the first comparison result.

[0074] After obtaining the first comparison result, the leakage detection result of the environmental protection GIS can be determined based on the first comparison result.

[0075] Optionally, if the leak detection result indicates a leak, an alarm signal can be output in various ways, such as sounding an alarm, emitting a buzzing sound, flashing a red light, displaying highlighted text on a display screen, etc. For example, an audible and visual alarm is used as the alarm device. If the leak detection result indicates a leak, the audible and visual alarm is controlled to emit a buzzing sound and strobe lights.

[0076] Optionally, if the first comparison result shows that the first abundance and the natural abundance are different, and the difference between the first abundance and the natural abundance is greater than a preset threshold, the leak detection result of the environmental GIS can be determined to be a leak. Otherwise, if the first comparison result shows that the first abundance and the natural abundance are the same, or if the first comparison result shows that the first abundance and the natural abundance are different, and the difference between the first abundance and the natural abundance is not greater than a preset threshold, the leak detection result of the environmental GIS is determined to be a leak. The preset threshold can be set based on empirical values, test values ​​from multiple tests, and the requirements of actual application scenarios, and is not specifically limited to this.

[0077] In an optional embodiment, the above S204 may include any of the following:

[0078] 1) When the first comparison result shows that the first abundance is different from the natural abundance, it is determined that the leakage detection result of the environmental protection GIS is that there is a leakage.

[0079] In order to avoid missing reports, when the first comparison result shows that the first abundance is different from the natural abundance, the leakage detection result of the environmental protection GIS can be directly determined as the presence of leakage.

[0080] 2) When the first comparison result shows that the first abundance is greater than the natural abundance, and the difference between the first abundance and the natural abundance is greater than a first threshold, the leakage detection result of the environmental GIS is determined to be a leakage; wherein the concentration of the isotope tracer gas in the filling air of the environmental GIS is greater than the concentration corresponding to the natural abundance.

[0081] As mentioned above, the concentration of the isotope tracer gas in the air filled in the environmentally friendly GIS is different from the concentration of the isotope tracer gas in the natural environment. Therefore, when the concentration of the isotope tracer gas in the air filled in the environmentally friendly GIS is greater than the concentration corresponding to the natural abundance, in the event of a leak in the environmentally friendly GIS, the concentration of the isotope tracer gas in the environment in which the environmentally friendly GIS is located will increase, so that the abundance of the isotope tracer gas in the environment in which the environmentally friendly GIS is located will increase on the basis of the natural abundance, thereby making the first abundance greater than the natural abundance.

[0082] Therefore, to improve the accuracy of GIS leak detection and avoid false alarms caused by changes in natural abundance due to slight changes in the natural environment, the environmental GIS leak detection result can be determined as a leak if the first comparison result shows that the first abundance is greater than the natural abundance, and the difference between the first abundance and the natural abundance is greater than a first threshold. The above-mentioned first threshold can be set based on empirical values, test values ​​from multiple tests, and the needs of actual application scenarios, and is not specifically limited to this.

[0083] 3) When the first comparison result shows that the first abundance is less than the natural abundance, and the difference between the natural abundance and the first abundance is greater than the second threshold, the leakage detection result of the environmental GIS is determined to be a leakage; wherein the concentration of the isotope tracer gas in the filling air of the environmental GIS is less than the concentration corresponding to the natural abundance.

[0084] Similar to 2) above, when the concentration of the isotope tracer gas in the filling air of the environmentally friendly GIS is lower than the concentration corresponding to the natural abundance, in the event of a leak in the environmentally friendly GIS, the concentration of the isotope tracer gas in the environment in which the environmentally friendly GIS is located will be reduced, so that the abundance of the isotope tracer gas in the environment in which the environmentally friendly GIS is located will be reduced on the basis of the natural abundance, thereby making the first abundance lower than the natural abundance.

[0085] Therefore, to improve the accuracy of GIS leak detection and avoid false alarms caused by changes in natural abundance due to slight changes in the natural environment, the environmental GIS leak detection result can be determined as a leak if the first comparison result shows that the first abundance is less than the natural abundance, and the difference between the first abundance and the natural abundance is greater than a second threshold. The second threshold can be set based on empirical values, test values ​​from multiple tests, and the needs of actual application scenarios, and is not specifically limited to this. The first and second thresholds can be the same or different.

[0086] In the aforementioned gas-insulated switchgear (GIS) leakage detection method, the GIS is filled with air containing an isotope tracer gas and an ultrasonic sensor is installed in the GIS's environment. The ultrasonic sensor receives ultrasonic signals, and if a leak is determined in the GIS based on the ultrasonic signal, a first abundance of the isotope tracer gas in the GIS's environment is obtained. The first abundance is then compared with the natural abundance to obtain a first comparison result, and the GIS leakage detection result is determined based on the first comparison result. In this way, using ultrasonic signals for GIS leakage detection enables low-power, real-time, all-weather online monitoring, enabling timely capture of acoustic anomalies indicating GIS leakage and rapid response to sudden GIS leaks. Furthermore, by introducing the isotope tracer gas into the GIS and further verifying the detection results obtained using the ultrasonic signal using the isotope tracer gas abundance, highly sensitive confirmation of minor GIS leaks is achieved, avoiding false alarms caused by environmental noise and significantly improving the reliability of detection results. Therefore, through the combination of ultrasonic signal analysis and isotope tracing technology, during the leakage detection process of environmental GIS, it is possible to effectively identify tiny leaks generated by environmental GIS on the basis of high sensitivity and high reliability, and achieve comprehensive coverage and graded response to leakage of environmental GIS equipment. Therefore, it is possible to detect leakage of environmental GIS in a timely manner, improve the operational reliability of environmental GIS, and the spatial safety of the environment in which the environmental GIS is located. In addition, it has good engineering adaptability and promotion prospects, which is of great significance for promoting the large-scale application of environmental GIS and ensuring the safe operation of the power system.

[0087] On the basis of the above embodiments, in an exemplary embodiment, the acquisition of the above first abundance is further refined, optionally, as follows: Figure 3 As shown, the following steps are included:

[0088] S301, controlling the gas collection equipment to collect ambient air from the environment where the environmentally friendly GIS is located, and transmitting the ambient air to the isotope ratio mass spectrometer.

[0089] The so-called isotope ratio mass spectrometer (IRMS) is a high-precision instrument specifically used to accurately measure the relative abundance of different isotopes (i.e., isotope ratios).

[0090] When it is determined that there is a leak in the environmental protection GIS based on the above-mentioned ultrasonic signal, gas collection equipment such as air pumps and suction guns can be controlled to collect the ambient air in the environment where the environmental protection GIS is located, and the collected ambient air can be transmitted to the isotope ratio mass spectrometer, so that the isotope ratio mass spectrometer can measure the isotope abundance of the obtained gas to obtain the abundance of the isotope tracer gas in the ambient air.

[0091] S302 : Receive the abundance of the isotope tracer gas in the ambient air detected by the isotope ratio mass spectrometer to obtain a first abundance.

[0092] In this way, after detecting the abundance of the isotope tracer gas in the ambient air, the isotope ratio mass spectrometer can transmit the abundance to the server, and the server can receive the abundance of the isotope tracer gas and use the received abundance as the first abundance.

[0093] In this embodiment, using an isotope ratio mass spectrometer to detect the abundance of isotope tracer gas in ambient air can improve the accuracy of the obtained first abundance, thereby improving the accuracy of leak detection results for the environmentally friendly GIS determined based on the comparison of the first abundance and the natural abundance. Furthermore, because the isotope ratio mass spectrometer can record the detection time, it can achieve quantitative tracking and dynamic detection of the abundance of isotope tracer gas in the environment of the environmentally friendly GIS. In the event of a leak in the environmentally friendly GIS, key parameters such as gas leakage volume and diffusion rate can be calculated, providing a quantitative basis for environmentally friendly GIS equipment maintenance.

[0094] On the basis of the above embodiments, in an exemplary embodiment, considering that there are often multiple welding gaps, sealing surfaces sealed with sealing rings, gas sealing valves and other leakage points on the environmental protection GIS shell that are prone to leakage failures, therefore, in order to improve the sensitivity of the ultrasonic sensor to the high-frequency sound waves generated by the leakage of the environmental protection GIS, multiple ultrasonic sensors can be installed in the environment where the environmental protection GIS is located, that is, the number of ultrasonic sensors is at least two.

[0095] Optionally, an ultrasonic sensor is installed at each leakage point on the environmental GIS housing where leakage failure is likely to occur, or at a position around the leakage point close to each leakage point.

[0096] Accordingly, in this embodiment, the collection of the above-mentioned ambient air is further limited, and the method of controlling the gas collection equipment to collect the ambient air of the environment in which the environmental protection GIS is located may include controlling the gas collection equipment to collect the ambient air around the target ultrasonic sensor; wherein, the target ultrasonic sensor is an ultrasonic sensor that collects ultrasonic signals to determine whether there is a leak in the environmental protection GIS.

[0097] In this embodiment, when it is determined that there is a leak in the environmental protection GIS based on the ultrasonic signal, the ultrasonic sensor that collects the ultrasonic signal that determines that there is a leak in the environmental protection GIS is first determined, and the determined ultrasonic sensor is used as the target ultrasonic sensor, so that the gas collection equipment can be controlled to collect the ambient air around the target ultrasonic sensor.

[0098] For example, if ultrasonic signal a collected by ultrasonic sensor A and ultrasonic signal b collected by ultrasonic sensor B are received, it is determined that there is a leak in the environmental protection GIS based on ultrasonic signal a, and it is determined that there is no leak in the environmental protection GIS based on ultrasonic signal b, then ultrasonic sensor A is the target ultrasonic sensor.

[0099] Optionally, a gas collection device can be installed corresponding to each ultrasonic sensor, and the correspondence between the ultrasonic sensors and the gas collection devices can be recorded. Thus, after a target ultrasonic sensor is identified, the gas collection device corresponding to the target ultrasonic sensor can be controlled to collect ambient air around the target ultrasonic sensor. Each gas collection device can correspond to one or more ultrasonic sensors.

[0100] Optionally, the installation location of each ultrasonic sensor may be recorded, so that after determining the target ultrasonic sensor, the gas collection device may be controlled to move around the installation location of the target ultrasonic sensor to collect the ambient air around the target ultrasonic sensor.

[0101] Optionally, at least two gas collection devices are provided, and the installation position of each ultrasonic sensor and the setting position of each gas collection device are recorded. Thus, after determining the target ultrasonic sensor, the gas collection device whose setting position is closest to the installation position of the target ultrasonic sensor can be determined, and the determined gas collection device can be controlled to collect the ambient air around the target ultrasonic sensor.

[0102] In this embodiment, since the concentration of the above-mentioned isotope tracer gas in the ambient air around the target ultrasonic sensor is relatively high when a leak occurs in the environmentally friendly GIS, the difference between the determined first abundance and the natural abundance can be relatively large, thereby improving the detection accuracy of small leaks in the environmentally friendly GIS, and improving the accuracy of the leakage detection results of the environmentally friendly GIS determined based on the comparison results of the first abundance and the natural abundance.

[0103] On the basis of the above embodiments, in an exemplary embodiment, the number of the above target ultrasonic sensors is multiple, and the acquisition method of the above first abundance is further refined, optionally, as follows: Figure 4 As shown, the following steps may be included:

[0104] S401 , receiving the abundance of the isotope tracer gas in the ambient air surrounding each target ultrasonic sensor detected by an isotope ratio mass spectrometer.

[0105] It can be understood that when there are multiple ultrasonic sensors, there can also be multiple target ultrasonic sensors.

[0106] For example, when there are multiple leakage points in the environmental GIS, ultrasonic sensors installed at each leakage point or at locations around each leakage point can collect ultrasonic signals, and determine that there is a leakage in the environmental GIS based on each ultrasonic signal.

[0107] For another example, when the environmental GIS leaks seriously, multiple ultrasonic sensors installed in the environment where the environmental GIS is located can all collect ultrasonic signals, and determine that the environmental GIS has a leak based on each ultrasonic signal.

[0108] Therefore, when there are multiple target ultrasonic sensors, the gas collection device can be controlled to collect the ambient air around each target ultrasonic sensor respectively, and the collected ambient air around each target ultrasonic sensor can be transmitted to the isotope ratio mass spectrometer for isotope tracer gas abundance detection.

[0109] In this way, for each target ultrasonic sensor, the abundance of the isotope tracer gas in the ambient air surrounding the target ultrasonic sensor detected by the isotope ratio mass spectrometer can be received, thereby receiving multiple abundances.

[0110] S402: Determine an average value of the received multiple abundances to obtain a first abundance.

[0111] When the plurality of abundances are received, an average value of the received plurality of abundances may be determined, and the obtained average value may be determined as the first abundance.

[0112] In this embodiment, local fluctuations and random errors caused by using the single abundance detected by the isotope ratio mass spectrometer as the first abundance can be avoided, so that the obtained first abundance can better represent the true abundance of the isotope tracer gas in the environment where the environmental protection GIS is located, thereby improving the accuracy of the obtained first abundance and improving the accuracy of the leakage detection results of the environmental protection GIS determined based on the comparison results of the first abundance and the natural abundance.

[0113] Based on the above embodiments, in an exemplary embodiment, when the ultrasonic signal collected by the ultrasonic sensor installed in the environment where the environmentally friendly GIS is located is not received, the leakage detection method of the environmentally friendly gas insulated switchgear may also include obtaining the second abundance of the isotope tracer gas in the environment where the environmentally friendly GIS is located according to a preset period; comparing the second abundance with the natural abundance to obtain a second comparison result; and determining the leakage detection result of the environmentally friendly GIS based on the second comparison result.

[0114] In this embodiment, even if a small leak exists in the environmental GIS, the high-frequency sound waves generated by the gas leak may still fall outside the frequency range of the ultrasonic sensor's detection range. Consequently, these high-frequency sound waves are insufficient to be captured by the ultrasonic sensor. Consequently, the ultrasonic sensor is insufficiently sensitive to the high-frequency sound waves generated by small leaks in the environmental GIS. In this case, relying on ultrasonic signal analysis for GIS leak detection may result in missed detections.

[0115] Based on this, in order to avoid missing the detection of tiny leaks in the environmentally friendly GIS, when the ultrasonic signal collected by the ultrasonic sensor installed in the environment where the environmentally friendly GIS is located is not received, the second abundance of the isotope tracer gas in the environment where the environmentally friendly GIS is located can be obtained according to the preset period, and the second abundance can be compared with the natural abundance to determine the leakage detection result of the environmentally friendly GIS based on the second comparison result obtained.

[0116] For example, according to a preset cycle, gas collection equipment such as an air pump and a suction gun can be controlled to collect the ambient air of the environment in which the environmentally friendly GIS is located, and the collected ambient air can be transmitted to an isotope ratio mass spectrometer, so that the isotope ratio mass spectrometer can measure the isotope abundance of the acquired gas to obtain the abundance of the isotope tracer gas in the ambient air as the second abundance.

[0117] For another example, according to a preset cycle, gas collection equipment such as air pumps and suction guns can be controlled to collect the ambient air around each ultrasonic sensor installed in the environment where the environmental protection GIS is located, and the collected ambient air can be transmitted to the isotope ratio mass spectrometer, so that the isotope ratio mass spectrometer can measure the abundance of the isotope tracer gas in the ambient air around each ultrasonic sensor to obtain multiple second abundances. Therefore, by comparing each second abundance with the natural abundance, the leakage situation of the environmental protection GIS shell position corresponding to each ultrasonic sensor can be determined one by one.

[0118] It should be noted that, in this embodiment, the second abundance and the natural abundance are compared to obtain a second comparison result; based on the second comparison result, the leakage detection result of the environmental GIS is determined, which is the same as the above-mentioned comparison of the first abundance and the natural abundance to obtain the first comparison result; based on the first comparison result, the leakage detection result of the environmental GIS is determined, and will not be repeated here.

[0119] The above-mentioned preset period can be set according to experience values, test values ​​of multiple tests, and the requirements of actual application scenarios, and no specific limitation is made to this.

[0120] In this embodiment, the problem of insufficient sensitivity of ultrasonic sensors to high-frequency sound waves generated by tiny leaks in environmental GIS can be solved, thereby avoiding missed detection of tiny leaks in environmental GIS and improving the accuracy of environmental GIS leakage detection.

[0121] Based on the above embodiments, in an exemplary embodiment, Figure 5 As shown, the leakage detection method of the environmentally friendly gas-insulated switchgear may include the following steps:

[0122] S501, receiving ultrasonic signals collected by ultrasonic sensors installed in the environment where the environmental GIS is located.

[0123] S502: When it is determined based on the ultrasonic signal that there is a leak in the environmental protection GIS, a target ultrasonic sensor is determined.

[0124] S503 , controlling the gas collection device to collect ambient air around the target ultrasonic sensor, and transmitting the ambient air to the isotope ratio mass spectrometer.

[0125] S504 , receiving the abundance of the isotope tracer gas in the ambient air detected by the isotope ratio mass spectrometer to obtain a first abundance.

[0126] S505 : Compare the first abundance and the natural abundance to obtain a first comparison result.

[0127] S506 , when the first comparison result shows that the first abundance is different from the natural abundance, determining that the leakage detection result of the environmental protection GIS is that leakage exists.

[0128] The specific implementation of steps S501-S505 is the same as that in the above method embodiments, and will not be repeated here.

[0129] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily performed in sequence in the order indicated by the arrows. Unless clearly stated herein, the execution of these steps is not strictly limited in order, and these steps can be performed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above may include multiple steps or multiple stages, and these steps or stages are not necessarily performed at the same time, but can be performed at different times, and the execution order of these steps or stages is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of the steps or stages in other steps or other steps. It is understandable that the various steps in different embodiments can be freely combined as needed, and the various non-contradictory schemes formed by the combination all fall within the scope of protection of this application.

[0130] Based on the same inventive concept, embodiments of the present application also provide a leakage detection device for environmentally friendly gas-insulated switchgear, for implementing the aforementioned leakage detection method for environmentally friendly gas-insulated switchgear. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more embodiments of the leakage detection device for environmentally friendly gas-insulated switchgear provided below can be found in the limitations of the leakage detection method for environmentally friendly gas-insulated switchgear described above and will not be further elaborated here.

[0131] In an exemplary embodiment, Figure 6 As shown, a leakage detection device for an environmentally friendly gas-insulated switchgear is provided, wherein the environmentally friendly gas-insulated switchgear GIS is filled with air containing an isotope tracer gas, and the concentration of the isotope tracer gas in the filled air is different from the concentration of the isotope tracer gas in the natural environment. The device includes: a signal receiving module 610, an abundance acquisition module 620, an abundance comparison module 630 and a leakage detection module 640, wherein:

[0132] The signal receiving module 610 is used to receive ultrasonic signals collected by ultrasonic sensors installed in the environment where the environmental GIS is located;

[0133] The abundance acquisition module 620 is configured to acquire a first abundance of the isotope tracer gas in the environment where the environmental protection GIS is located when a leak is determined based on the ultrasonic signal;

[0134] Abundance comparison module 630, configured to compare the first abundance with the natural abundance to obtain a first comparison result; wherein the natural abundance is the abundance of the isotope tracer gas in the natural environment;

[0135] The leakage detection module 640 is used to determine the leakage detection result of the environmental protection GIS according to the first comparison result.

[0136] In an exemplary embodiment, the abundance acquisition module 620 includes:

[0137] The equipment control unit controls the gas collection equipment to collect the ambient air in the environment where the environmentally friendly GIS is located, and transmits the ambient air to the isotope ratio mass spectrometer;

[0138] The abundance acquisition unit receives the abundance of the isotope tracer gas in the ambient air detected by the isotope ratio mass spectrometer to obtain a first abundance.

[0139] In an exemplary embodiment, the number of ultrasonic sensors is at least two; and the abundance acquisition unit is specifically configured to:

[0140] Controlling the gas collection device to collect ambient air around the target ultrasonic sensor;

[0141] Among them, the target ultrasonic sensor is an ultrasonic sensor that collects ultrasonic signals to determine whether there is a leak in the environmental protection GIS.

[0142] In an exemplary embodiment, there are multiple target ultrasonic sensors; the abundance acquisition unit is specifically configured to:

[0143] receiving the abundance of the isotope tracer gas in the ambient air surrounding each target ultrasonic sensor as detected by the isotope ratio mass spectrometer;

[0144] An average value is determined for the received multiple abundances to obtain a first abundance.

[0145] In an exemplary embodiment, when no ultrasonic signal collected by an ultrasonic sensor installed in the environment where the environmentally friendly GIS is located is received, the leakage detection device of the environmentally friendly gas insulated switchgear further includes:

[0146] The leakage warning module is used to obtain the second abundance of the isotope tracer gas in the environment where the environmental protection GIS is located according to a preset period; compare the second abundance with the natural abundance to obtain a second comparison result; and determine the leakage detection result of the environmental protection GIS based on the second comparison result.

[0147] In an exemplary embodiment, the leakage detection module 640 is specifically configured to perform any of the following:

[0148] When the first comparison result shows that the first abundance is different from the natural abundance, it is determined that the leakage detection result of the environmental protection GIS is that there is a leakage;

[0149] If the first comparison result shows that the first abundance is greater than the natural abundance, and the difference between the first abundance and the natural abundance is greater than the first threshold, the leakage detection result of the environmental GIS is determined to be a leakage; wherein the concentration of the isotope tracer gas in the filling air of the environmental GIS is greater than the concentration corresponding to the natural abundance;

[0150] When the first comparison result is that the first abundance is less than the natural abundance, and the difference between the natural abundance and the first abundance is greater than the second threshold, the leakage detection result of the environmental protection GIS is determined to be a leakage; wherein, the concentration of the isotope tracer gas in the filling air of the environmental protection GIS is less than the concentration corresponding to the natural abundance.

[0151] Each module in the aforementioned leakage detection device for environmentally friendly gas-insulated switchgear may be implemented in whole or in part through software, hardware, or a combination thereof. Each module may be embedded in or independent of a processor in a computer device in the form of hardware, or may be stored in a computer device memory in the form of software, so that the processor can call and execute the corresponding operations of each module.

[0152] In an exemplary embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Figure 7 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, abbreviated as I / O) and a communication interface. The processor, memory and input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The database of the computer device is used to store data such as ultrasonic signals, first abundance, natural abundance, etc. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a leakage detection method for an environmentally friendly gas-insulated switchgear is implemented.

[0153] In an exemplary embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as shown in FIG. Figure 8As shown. The computer device includes a processor, memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals via wired or wireless communication, and the wireless communication can be achieved via Wi-Fi, a mobile cellular network, near-field communication (NFC), or other technologies. When executed by the processor, the computer program implements a leakage detection method for environmentally friendly gas-insulated switchgear. The display unit of the computer device is used to form a visually visible image, and can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device casing, or an external keyboard, touchpad or mouse.

[0154] Those skilled in the art will understand that Figure 7 and Figure 8 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0155] In an exemplary embodiment, a computer device is provided, including a memory and a processor. The memory stores a computer program, and the processor implements the steps in the above method embodiments when executing the computer program.

[0156] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0157] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0158] Those skilled in the art will understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. In particular, any reference to memory, database, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the various embodiments provided herein may be, but are not limited to, general-purpose processors, central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), programmable logic devices (PLDs), quantum computing-based data processing logic devices, artificial intelligence (AI) processors, and the like.

[0159] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0160] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A leakage detection method for environmentally friendly gas-insulated switchgear, characterized in that: The environmentally friendly gas-insulated switchgear GIS is filled with air containing an isotope tracer gas, and the concentration of the isotope tracer gas in the filled air is different from the concentration of the isotope tracer gas in the natural environment. The method includes: Receive ultrasonic signals collected by ultrasonic sensors installed in the environment where the environmental GIS is located; When it is determined that the environmentally friendly GIS has a leak according to the ultrasonic signal, obtaining a first abundance of the isotope tracer gas in the environment where the environmentally friendly GIS is located; Comparing the first abundance with the natural abundance to obtain a first comparison result; wherein the natural abundance is the abundance of the isotope tracer gas in the natural environment; The leakage detection result of the environmentally friendly GIS is determined based on the first comparison result.

2. The method according to claim 1, characterized in that The obtaining of the first abundance of the isotope tracer gas in the environment where the environmentally friendly GIS is located includes: Controlling the gas collection device to collect ambient air from the environment in which the environmentally friendly GIS is located, and transmitting the ambient air to the isotope ratio mass spectrometer; The abundance of the isotope tracer gas in the ambient air detected by the isotope ratio mass spectrometer is received to obtain a first abundance.

3. The method according to claim 2, characterized in that The number of the ultrasonic sensors is at least two; The control gas collection device collects the ambient air of the environment in which the environmentally friendly GIS is located, including: Controlling the gas collection device to collect ambient air around the target ultrasonic sensor; The target ultrasonic sensor is an ultrasonic sensor that collects ultrasonic signals to determine if there is leakage in the environmentally friendly GIS.

4. The method according to claim 3, characterized in that There are multiple target ultrasonic sensors; and receiving the abundance of the isotope tracer gas in the ambient air detected by the isotope ratio mass spectrometer to obtain a first abundance, comprising: receiving the abundance of the isotope tracer gas in the ambient air surrounding each of the target ultrasonic sensors detected by the isotope ratio mass spectrometer; An average value is determined for the received multiple abundances to obtain a first abundance.

5. The method according to claim 1, wherein In the case where no ultrasonic signal collected by the ultrasonic sensor installed in the environment where the environmentally friendly GIS is located is received, the method further includes: Obtaining, according to a preset period, a second abundance of the isotope tracer gas in the environment in which the environmentally friendly GIS is located; comparing the second abundance with the natural abundance to obtain a second comparison result; According to the second comparison result, the leakage detection result of the environmental protection GIS is determined.

6. The method according to claim 1, wherein Determining the leakage detection result of the environmental GIS based on the first comparison result includes any one of the following: When the first comparison result shows that the first abundance is different from the natural abundance, determining that the leakage detection result of the environmental GIS is that there is a leakage; If the first comparison result shows that the first abundance is greater than the natural abundance, and the difference between the first abundance and the natural abundance is greater than a first threshold, the leakage detection result of the environmentally friendly GIS is determined to be leaking; wherein the concentration of the isotope tracer gas in the filling air of the environmentally friendly GIS is greater than the concentration corresponding to the natural abundance; When the first comparison result is that the first abundance is less than the natural abundance, and the difference between the natural abundance and the first abundance is greater than a second threshold, the leakage detection result of the environmentally friendly GIS is determined to be that there is a leakage; wherein, the concentration of the isotope tracer gas in the filling air of the environmentally friendly GIS is less than the concentration corresponding to the natural abundance.

7. A leakage detection device for environmentally friendly gas-insulated switchgear, characterized in that: The environmentally friendly gas-insulated switchgear GIS is filled with air containing an isotope tracer gas, and the concentration of the isotope tracer gas in the filled air is different from the concentration of the isotope tracer gas in the natural environment. The device includes: A signal receiving module is used to receive ultrasonic signals collected by ultrasonic sensors installed in the environment where the environmental GIS is located; an abundance acquisition module, configured to acquire a first abundance of the isotope tracer gas in the environment where the environmentally friendly GIS is located, when it is determined based on the ultrasonic signal that the environmentally friendly GIS is leaking; an abundance comparison module, configured to compare the first abundance with the natural abundance to obtain a first comparison result; wherein the natural abundance is the abundance of the isotope tracer gas in the natural environment; The leakage detection module is used to determine the leakage detection result of the environmental protection GIS according to the first comparison result.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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