Method, device, equipment and medium for detecting and analyzing C4F7N / CO2 mixed gas

Abstract

The invention discloses a method, a device, equipment and a medium for detecting and analyzing C4F7N / CO2 mixed gas. The method comprises the following steps: determining a gas sampling point of target electrical equipment, taking gas collected at the gas sampling point as a target gas sample, and carrying out gas component analysis on the target gas sample to obtain a gas type and a gas concentration corresponding to the target gas sample; determining a gas test point of the target electrical equipment, acquiring test data in the internal discharge process of the target electrical equipment at the gas test point through the detection equipment, and determining the internal discharge intensity of the target electrical equipment according to the test data; and fault information of the target electrical equipment is determined according to the gas type, the gas concentration and the discharge intensity, and the gas type, the gas concentration and the discharge intensity are associated with the fault information. According to the technical scheme, gas component analysis and partial discharge detection are combined to accurately diagnose faults of the electrical equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental protection gases, and in particular to a detection and analysis method, device, equipment and medium for C4F7N / CO2 mixed gas. Background Art

[0002] C4F7N / CO2 mixed gas is an innovative and environmentally friendly gas mixture with excellent insulation and dielectric properties, providing a safer and more reliable working environment in electrical insulation switchgear and substations. Currently, the decomposition characteristics of C4F7N / CO2 mixed gas are usually analyzed, and the fault conditions of electrical equipment are determined by the analysis results. However, this method still has low detection accuracy. Therefore, it is very important to accurately diagnose the faults of electrical equipment. Summary of the invention

[0003] The present invention provides a method, device, equipment and medium for detecting and analyzing a C4F7N / CO2 mixed gas, so as to realize accurate diagnosis of faults existing in electrical equipment.

[0004] According to one aspect of the present invention, a method for detecting and analyzing a C4F7N / CO2 mixed gas is provided, the method comprising:

[0005] Determine a gas sampling point of a target electrical device, wherein the gas sampling point is located inside the target electrical device and within a first preset range from the C4F7N / CO2 mixed gas;

[0006] The gas collected at the gas sampling point is used as a target gas sample, and a gas composition analysis is performed on the target gas sample to obtain a gas type and a gas concentration corresponding to the target gas sample;

[0007] Determine a gas test point of the target electrical device, wherein the gas test point is located outside the target electrical device and within a second preset range from the C4F7N / CO2 mixed gas;

[0008] Acquiring test data during the internal discharge process of the target electrical device through a detection device at the gas test point, and determining the discharge intensity inside the target electrical device according to the test data;

[0009] Fault information of the target electrical device is determined according to the gas type, the gas concentration, and the discharge intensity, and the gas type, the gas concentration, and the discharge intensity are associated with the fault information.

[0010] According to another aspect of the present invention, a detection and analysis device for a C4F7N / CO2 mixed gas is provided, the device comprising:

[0011] A sampling point determination module, used to determine a gas sampling point of a target electrical device, wherein the gas sampling point is located inside the target electrical device and is within a first preset range from the C4F7N / CO2 mixed gas;

[0012] A gas analysis module, used to use the gas collected at the gas sampling point as a target gas sample, perform gas composition analysis on the target gas sample, and obtain the gas type and gas concentration corresponding to the target gas sample;

[0013] A test point determination module, used to determine a gas test point of the target electrical device, wherein the gas test point is located outside the target electrical device and within a second preset range from the C4F7N / CO2 mixed gas;

[0014] A data determination module, used to obtain test data during the internal discharge process of the target electrical device through a detection device at the gas test point, and determine the discharge intensity inside the target electrical device according to the test data;

[0015] The fault information determination module is used to determine the fault information of the target electrical equipment according to the gas type, the gas concentration and the discharge intensity, and the gas type, the gas concentration and the discharge intensity are associated with the fault information.

[0016] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0017] at least one processor; and

[0018] a memory communicatively connected to the at least one processor; wherein,

[0019] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can perform the detection and analysis method of the C4F7N / CO2 mixed gas described in any embodiment of the present invention.

[0020] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the detection and analysis method of the C4F7N / CO2 mixed gas described in any embodiment of the present invention when executed.

[0021] The technical solution of the embodiment of the present invention determines the gas sampling point of the target electrical equipment, the gas sampling point is located inside the target electrical equipment and is located within the first preset range of the C4F7N / CO2 mixed gas; ensures that the sampling point is as close as possible to the C4F7N / CO2 mixed gas as an insulating material; thereby taking the gas collected at the gas sampling point as the target gas sample, performing gas component analysis on the target gas sample, and obtaining the gas type and gas concentration corresponding to the target gas sample; and accurately determining the gas type and gas concentration of the decomposition product in the target gas sample. Determine the gas test point of the target electrical equipment, the gas test point is located outside the target electrical equipment and is located within the second preset range of the C4F7N / CO2 mixed gas; ensure the accuracy of the gas test point, thereby obtaining the test data of the internal discharge process of the target electrical equipment through the detection equipment at the gas test point, and determining the discharge intensity inside the target electrical equipment according to the test data; further, according to the gas type, gas concentration and discharge intensity, determine the fault information of the target electrical equipment, and the gas type, gas concentration and discharge intensity are associated with the fault information, that is, the present invention combines gas component analysis and partial discharge detection to achieve accurate diagnosis of faults existing in electrical equipment.

[0022] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a flow chart of a method for detecting and analyzing a C4F7N / CO2 mixed gas provided according to an embodiment of the present invention;

[0025] Figure 2 is a flow chart of another C4F7N / CO2 mixed gas detection and analysis method provided according to an embodiment of the present invention;

[0026] Figure 3 2 is a schematic structural diagram of a C4F7N / CO2 mixed gas detection and analysis device provided according to an embodiment of the present invention;

[0027] Figure 4It is a structural schematic diagram of an electronic device for implementing the detection and analysis method of the C4F7N / CO2 mixed gas according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first", "second", "target", "reference", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] Embodiment 1

[0031] Figure 1 A flow chart of a method for detecting and analyzing a C4F7N / CO2 mixed gas provided in an embodiment of the present invention. This embodiment is applicable to the case where a C4F7N / CO2 mixed gas used as an insulating material in an electrical device is detected and analyzed. The method can be performed by a detection and analysis device for a C4F7N / CO2 mixed gas. The detection and analysis device for a C4F7N / CO2 mixed gas can be implemented in the form of hardware and / or software. The detection and analysis device for a C4F7N / CO2 mixed gas can be configured in any electronic device with a network communication function.

[0032] like Figure 1 As shown, the detection and analysis method of C4F7N / CO2 mixed gas of the present invention includes the following process:

[0033] S110, determining a gas sampling point of the target electrical device, where the gas sampling point is located inside the target electrical device and within a first preset range from the C4F7N / CO2 mixed gas.

[0034] Specifically, the C4F7N / CO2 mixed gas is distributed as an insulating material in a preset area of ​​the electrical equipment. A gas sampling point is selected at an internal position of the target electrical equipment, and a position in a first preset range close to the preset area where the C4F7N / CO2 mixed gas is located is selected as the gas sampling point, so as to more accurately reflect the actual working state of the target electrical equipment.

[0035] Further gas sampling point selection can also include: selecting equipment components away from interference, including strong electromagnetic field emission points and heating elements, and evaluating the gas flow inside the equipment. Selecting locations where the gas flow is relatively uniform for sampling, conducting test sampling at the selected gas sampling points, monitoring the stability of the test samples, and clearly marking the location of the gas sampling points inside the equipment. There are multiple gas sampling points inside the target electrical equipment.

[0036] A sampling plan is developed based on the specific location of the recorded gas sampling points, the status of the target electrical equipment and other relevant information. The sampling plan includes information such as sampling time, cycle and sampling volume.

[0037] S120 , taking the gas collected at the gas sampling point as a target gas sample, performing a gas composition analysis on the target gas sample, and obtaining a gas type and a gas concentration corresponding to the target gas sample.

[0038] Specifically, before gas sampling, according to the gas properties and detection requirements, select a gas sampling device, which may include a manual sampling pump, an automatic sampler, and an online monitoring device, and check the cleanliness and calibration status of the gas sampling device. After determining that the cleanliness and calibration status meet the requirements, connect the gas sampling device to the selected gas sampling point, and set the sampling parameters of the gas sampling device according to the sampling plan. The sampling parameters include sampling time, flow rate, sampling volume and other information. Start the gas sampling device, monitor the equipment operating status and gas flow during the sampling process, carefully transfer the collected target gas sample to a pre-prepared sample bottle or bag, seal the sample bottle or bag with sealing materials, and mark the sampling time, location, gas sampling point number and other information on the sample bottle or bag.

[0039] The photoacoustic spectroscopy technique is further used to detect the gas components to obtain the gas type and gas concentration of the decomposition product. The specific analysis process includes: selecting a chromatographic column according to the characteristics of the target gas sample, and setting the column temperature, injection port temperature, and detector temperature of the chromatographic column; then injecting the target gas sample into the chromatographic column, and when the gas passes through the chromatographic column, it is separated according to the volatility of each component and the interaction within the column to obtain a separated reference gas sample, and then the reference gas sample is placed in the measurement chamber of the photoacoustic spectrometer, and a pulsed laser or a modulated continuous laser is used to irradiate the gas sample, and sound wave signals are generated according to the light absorption characteristics of the gas at different wavelengths. The photoacoustic spectrometer analyzes the gas components by detecting these sound wave signals, records the light absorption peaks of each component at specific wavelengths, and obtains the gas type and gas concentration corresponding to the target gas sample.

[0040] S130, determining a gas test point of the target electrical device, where the gas test point is located outside the target electrical device and within a second preset range from the C4F7N / CO2 mixed gas.

[0041] Specifically, the gas test point is located outside the target electrical equipment and at a position within the second preset range from the C4F7N / CO2 mixed gas, which can ensure the accuracy of the gas test point. Further, the gas test point can be subjected to voltage detection, and the gas test point with a voltage greater than the preset voltage is used as the final gas test point, which can better reflect the actual situation of the equipment.

[0042] S140. Acquire test data of the internal discharge process of the target electrical device through a detection device at the gas test point, and determine the discharge intensity inside the target electrical device according to the test data.

[0043] The detection device may be a device for detecting the internal discharge of the target electrical device, and may include at least one of a partial discharge detection instrument, an optical sensor, and an ultrasonic sensor.

[0044] Specifically, the gas test point and the detection equipment are connected, and the relevant parameters of the detection equipment are set according to the test requirements, including sensitivity, frequency range, sampling time and other information, so as to obtain test data during the internal discharge process of the target electrical equipment through the detection equipment at the gas test point.

[0045] Optionally, at the gas test point, test data during the internal discharge process of the target electrical equipment is obtained through the detection equipment, and the discharge intensity inside the target electrical equipment is determined according to the test data, including: if the detection equipment is a partial discharge detection instrument, the test data during the internal discharge process of the target electrical equipment is an electromagnetic signal; the electromagnetic signal may include electromagnetic signal intensity, frequency characteristics and waveform diagram. If the detection equipment is an optical sensor, the test data during the internal discharge process of the target electrical equipment is an optical signal; the optical signal may include optical signal images and spectral data. If the detection equipment is an ultrasonic sensor, the test data during the internal discharge process of the target electrical equipment is an acoustic wave signal; based on at least one of the electromagnetic signal, the optical signal and the acoustic wave signal, the discharge intensity inside the target electrical equipment is determined.

[0046] S150. Determine fault information of the target electrical equipment according to the gas type, gas concentration and discharge intensity, where the gas type, gas concentration and discharge intensity are associated with the fault information.

[0047] The fault information may include information on whether insulation aging, breakdown or other electrical faults exist.

[0048] Specifically, there is a correlation between the gas type, gas concentration, and discharge intensity and the fault information. That is, the correlation between the gas type, gas concentration, and discharge intensity and the fault information in the historical records is accurately constructed, so that after obtaining the gas type, gas concentration, and discharge intensity, the fault information of the target electrical equipment can be queried and determined from the correlation based on the gas type, gas concentration, and discharge intensity.

[0049] In this embodiment, optionally, the fault information also includes location information of a discharge source inside the target electrical device; the fault information of the target electrical device is determined based on the gas type, gas concentration and the discharge intensity, including: taking the two discharge intensities with the largest intensity values ​​as reference discharge intensities, and determining a test distance between gas test points corresponding to the reference discharge intensities; and determining the location information of the discharge source based on the reference discharge intensity and the test distance.

[0050] For example, when measuring multiple gas test points of the target electrical equipment, the signal strength measured by the same type of detection equipment is larger, indicating that the location of the discharge source is close to the measurement point. When the target electrical equipment insulated by C4F7N / CO2 mixed gas is a pipeline-type GIS device, partial discharge measurement is performed at two measurement points A and B on the pipeline with a distance of L. The signal strength measured at point A is x (unit pC), and the signal strength measured at point B is y (unit pC). If x>y, then the end close to the discharge source is point A. It can be further calculated that the distance from the location of the discharge source to point A is approximately L*[0.48-0.15*ln(x / y)], thereby accurately determining the location information of the discharge source.

[0051] In this embodiment, after determining the fault information of the target electrical equipment, the method may further include: report preparation, which may include summarizing the relevant data of gas composition analysis results, partial discharge data, and fault diagnosis conclusions, describing in detail the specific methods of gas analysis, partial discharge detection and fault diagnosis adopted, listing the gas composition and concentration in detail, and providing charts.

[0052] The technical solution of the embodiment of the present invention determines the gas sampling point of the target electrical equipment, the gas sampling point is located inside the target electrical equipment and is located within the first preset range of the C4F7N / CO2 mixed gas; ensures that the sampling point is as close as possible to the C4F7N / CO2 mixed gas as an insulating material; thereby taking the gas collected at the gas sampling point as the target gas sample, performing gas component analysis on the target gas sample, and obtaining the gas type and gas concentration corresponding to the target gas sample; and accurately determining the gas type and gas concentration of the decomposition product in the target gas sample. Determine the gas test point of the target electrical equipment, the gas test point is located outside the target electrical equipment and is located within the second preset range of the C4F7N / CO2 mixed gas; ensure the accuracy of the gas test point, thereby obtaining the test data of the internal discharge process of the target electrical equipment through the detection equipment at the gas test point, and determining the discharge intensity inside the target electrical equipment according to the test data; further, according to the gas type, gas concentration and discharge intensity, determine the fault information of the target electrical equipment, and the gas type, gas concentration and discharge intensity are associated with the fault information, that is, the present invention combines gas component analysis and partial discharge detection to achieve accurate diagnosis of faults existing in electrical equipment.

[0053] Embodiment 2

[0054] Figure 2This is a flow chart of another C4F7N / CO2 mixed gas detection and analysis method provided by an embodiment of the present invention. The technical solution of this embodiment further optimizes the process of S150 in the above embodiment on the basis of the above embodiment. This embodiment can be combined with various optional solutions in one or more of the above embodiments. Figure 2 As shown, the detection and analysis method of C4F7N / CO2 mixed gas of the present invention includes the following process:

[0055] S210. Determine a gas sampling point of the target electrical equipment, use the gas collected at the gas sampling point as a target gas sample, perform a gas composition analysis on the target gas sample, and obtain a gas type and gas concentration corresponding to the target gas sample; the gas sampling point is located inside the target electrical equipment and is within a first preset range from the C4F7N / CO2 mixed gas.

[0056] S220, determining a gas test point of the target electrical equipment, obtaining test data of the internal discharge process of the target electrical equipment through a detection device at the gas test point, and determining the discharge intensity inside the target electrical equipment according to the test data; the gas test point is located outside the target electrical equipment and at a position within a second preset range from the C4F7N / CO2 mixed gas.

[0057] S230: Determine a concentration threshold corresponding to each gas type, and determine first indicator information of the gas type according to the concentration threshold corresponding to the gas type and the gas concentration.

[0058] The concentration threshold is used to describe the maximum or minimum value of the gas concentration corresponding to the gas type in the target electrical equipment, that is, different gas types correspond to different concentration thresholds, and the concentration threshold can well reflect the dangerous threshold of the gas. Specifically, the ratio of the gas concentration to the concentration threshold can be used as the first indicator information corresponding to the gas type.

[0059] S240: Determine an intensity threshold of the discharge intensity inside the target electrical device, and determine second indicator information of the C4F7N / CO2 mixed gas according to the intensity threshold and the discharge intensity.

[0060] The intensity threshold is used to describe the maximum value of the discharge intensity within the safety range of the electrical equipment. Specifically, the ratio of the discharge intensity to the intensity threshold can be used as the second indicator information of the C4F7N / CO2 mixed gas.

[0061] S250. Determine target index information of the C4F7N / CO2 mixed gas according to the first index information and the second index information; the target index information is used to reflect the insulation state of the target electrical equipment.

[0062] Specifically, first weight information of each first indicator information and second weight information of the second indicator information are determined; based on the first weight information and the second weight information, the first indicator information and the second indicator information are weighted and summed to obtain the target indicator information of the C4F7N / CO2 mixed gas.

[0063] For example, if the gas types include CO and CF4, the CO concentration is P co , CF4 concentration is P CF4 , the discharge intensity is Q, and the concentration threshold A1 corresponding to CO is 10ppm, the concentration threshold A2 corresponding to CF4 is 20ppm, and the intensity threshold A3 of the discharge intensity is 100pC. Then the first indicator information X1=P co / A1,X2=P CF4 / A2; second indicator information X3 = Q / A3.

[0064] According to the importance of each factor on the insulation state, the first weight information of each first indicator information and the second weight information of the second indicator information are determined, that is, the weight corresponding to X1 can be set to w1, the weight corresponding to X2 can be set to w2, and the second weight information of the second indicator information X3 can be set to w3. Then the target indicator information S of C4F7N / CO2 mixed gas is S=w1X1+w2X2+w3X3.

[0065] For example, for a mixed gas with a ratio of 10-15% C4F7N and 90-85% CO2, w1=0.3, w2=0.3, and w3=0.4 can be set.

[0066] S260: Determine a target insulation level of the target electrical equipment according to the target indicator information and a preset indicator threshold, and determine fault information of the target electrical equipment according to the target insulation level.

[0067] Specifically, the preset index threshold includes a first index threshold and a second index threshold, and there is a corresponding relationship between the insulation level and the fault information. Accordingly, the target insulation level of the target electrical equipment is determined according to the target index information and the preset index threshold, and the fault information of the target electrical equipment is determined according to the target insulation level, including steps A1-A3:

[0068] Step A1: When the target index information is less than the first index threshold, the target insulation level of the target electrical equipment is the first level, and the fault information of the target electrical equipment corresponding to the first level is that the target electrical equipment operates normally, and the target electrical equipment is inspected according to the first preset period.

[0069] Among them, the first level is used to describe that the insulation state of the C4F7N / CO2 mixed gas is good and the target electrical equipment operates normally.

[0070] Step A2: When the target index information is greater than the first index threshold and less than the second index threshold, the target insulation level of the target electrical equipment is the second level. The fault information of the target electrical equipment corresponding to the second level is that there is partial discharge inside the target electrical equipment. Inspect the target electrical equipment according to the second preset period; the first preset period is greater than the second preset period.

[0071] Among them, the second level is used to describe that the insulation state of the C4F7N / CO2 mixed gas is in the intermediate state, and the insulation state has deteriorated to a certain extent. It is necessary to shorten the detection period and closely monitor the change trends of the gas components and the partial discharge intensity.

[0072] Step A3: When the target index information is greater than the second index threshold, the target insulation level of the target electrical equipment is the third level. The fault information of the target electrical equipment corresponding to the third level is to immediately stop operating the target electrical equipment and inspect the target electrical equipment.

[0073] Among them, the third level is used to describe that the insulation state of the C4F7N / CO2 mixed gas is in the bad state, that is, the insulation state has seriously deteriorated, there are relatively large potential safety hazards, and it is necessary to immediately take measures for maintenance or replacement of relevant components.

[0074] Exemplarily, the target index information is S, and the preset index thresholds include the first index threshold U1 and the second index threshold U2; U1 = 0.3 and U2 = 0.7.

[0075] When S < U1, the target insulation level of the target electrical equipment is the first level, that is, the evaluation result is "good", indicating that the insulation state of the target electrical equipment is good, the equipment operates normally, and it can continue to be detected according to the regular period.

[0076] When U1 < S < U2, the target insulation level of the target electrical equipment is the second level, and the evaluation result is "medium", indicating that the insulation state of the target electrical equipment has deteriorated to a certain extent, it is necessary to shorten the detection period, and closely monitor the change trends of the gas components and the partial discharge intensity.

[0077] When S > U2, the target insulation level of the target electrical equipment is the third level, that is, the evaluation result is "bad", meaning that the insulation state of the target electrical equipment has seriously deteriorated, there are relatively large potential safety hazards, and it is necessary to immediately take measures for maintenance or replacement of relevant components.

[0078] In this implementation technical solution, by judging the target index information with the first index threshold and the second index threshold, the accurate determination of the target insulation level is realized.

[0079] In this embodiment, optionally, after obtaining the gas type and gas concentration corresponding to the target gas sample, the method further includes: determining a reference insulation state of the target electrical device according to the gas type and gas concentration; there is a correlation between the gas type and gas concentration and the reference insulation state; the reference insulation state is used to reflect the insulation level of the target electrical device. Further determining a comparison result between the reference insulation state and the target insulation level, and updating the target insulation level of the target electrical device according to the comparison result.

[0080] Specifically, there is a corresponding relationship between the reference insulation state and the home level. After determining the reference insulation state, the corresponding reference insulation level can be reflected according to the reference insulation state to determine whether the reference insulation level is consistent with the target insulation level. If they are consistent, the target insulation level remains unchanged. If they are inconsistent, it is determined whether the difference between the insulation levels is 1. If the difference is 1, the lower insulation level is used as the target insulation level. If it is greater than 1, the target insulation level is re-determined.

[0081] The technical solution of this embodiment compares the insulation level obtained by gas composition analysis with the insulation level obtained by partial discharge detection to achieve accurate determination of the target insulation level.

[0082] The technical solution of the embodiment of the present invention determines the gas sampling point of the target electrical equipment, takes the gas collected at the gas sampling point as the target gas sample, performs gas composition analysis on the target gas sample, and obtains the gas type and gas concentration corresponding to the target gas sample; the gas sampling point is located inside the target electrical equipment and is located within the first preset range of the C4F7N / CO2 mixed gas. The gas test point of the target electrical equipment is determined, and the test data of the internal discharge process of the target electrical equipment is obtained through the detection equipment at the gas test point, and the discharge intensity inside the target electrical equipment is determined according to the test data; the gas test point is located outside the target electrical equipment and is located within the second preset range of the C4F7N / CO2 mixed gas. The concentration threshold corresponding to each gas type is determined, and the first indicator information of the gas type is determined according to the concentration threshold corresponding to the gas type and the gas concentration, and the state of the gas inside the target electrical equipment is accurately reflected through the first indicator information. The intensity threshold of the internal discharge intensity of the target electrical equipment is determined, and the second indicator information of the C4F7N / CO2 mixed gas is determined according to the intensity threshold and the discharge intensity, and the state of the gas inside the target electrical equipment is accurately reflected through the second indicator information. Further, the target index information of the C4F7N / CO2 mixed gas is determined based on the first index information and the second index information; the target index information is used to reflect the insulation state of the target electrical equipment, that is, the insulation state of the target electrical equipment is accurately reflected by combining gas composition analysis and partial discharge detection. Then, the target insulation level of the target electrical equipment is determined based on the target index information and the preset index threshold, and the fault information of the target electrical equipment is determined based on the target insulation level, so as to accurately diagnose the faults of the electrical equipment.

[0083] Embodiment 3

[0084] Figure 3 The present invention provides a schematic diagram of a C4F7N / CO2 mixed gas detection and analysis device. This embodiment is applicable to the detection and analysis of C4F7N / CO2 mixed gas as an insulating material in electrical equipment. The C4F7N / CO2 mixed gas detection and analysis device can be implemented in the form of hardware and / or software. The C4F7N / CO2 mixed gas detection and analysis device can be configured in any electronic device with network communication function. Figure 3 As shown, the detection and analysis device of the C4F7N / CO2 mixed gas of the present invention comprises:

[0085] A sampling point determination module 310 is used to determine a gas sampling point of a target electrical device, wherein the gas sampling point is located inside the target electrical device and is within a first preset range from the C4F7N / CO2 mixed gas;

[0086] The gas analysis module 320 is used to use the gas collected at the gas sampling point as a target gas sample, perform gas composition analysis on the target gas sample, and obtain the gas type and gas concentration corresponding to the target gas sample;

[0087] A test point determination module 330 is used to determine a gas test point of the target electrical device, wherein the gas test point is located outside the target electrical device and within a second preset range from the C4F7N / CO2 mixed gas;

[0088] A data determination module 340 is used to obtain test data of the internal discharge process of the target electrical device through a detection device at the gas test point, and determine the discharge intensity inside the target electrical device according to the test data;

[0089] The fault information determination module 350 is used to determine the fault information of the target electrical device according to the gas type, the gas concentration and the discharge intensity, and the gas type, the gas concentration and the discharge intensity are associated with the fault information.

[0090] On the basis of the above embodiment, optionally, the fault information determination module includes a first indicator information determination unit, a second indicator information determination unit, a target indicator information determination unit and a fault information determination unit; the first indicator information determination unit is used to determine the concentration threshold corresponding to each gas type, and determine the first indicator information of the gas type according to the concentration threshold corresponding to the gas type and the gas concentration. The second indicator information determination unit is used to determine the intensity threshold of the internal discharge intensity of the target electrical equipment, and determine the second indicator information of the C4F7N / CO2 mixed gas according to the intensity threshold and the discharge intensity. The target indicator information determination unit is used to determine the target indicator information of the C4F7N / CO2 mixed gas according to the first indicator information and the second indicator information; the target indicator information is used to reflect the insulation state of the target electrical equipment. The fault information determination unit is used to determine the target insulation level of the target electrical equipment according to the target indicator information and the preset indicator threshold, and determine the fault information of the target electrical equipment according to the target insulation level.

[0091] Based on the above embodiment, optionally, the target indicator information determination unit is also used to determine the first weight information of each of the first indicator information and the second weight information of the second indicator information; based on the first weight information and the second weight information, the first indicator information and the second indicator information are weightedly summed to obtain the target indicator information of the C4F7N / CO2 mixed gas.

[0092] On the basis of the above embodiment, optionally, the preset index threshold includes a first index threshold and a second index threshold, and there is a corresponding relationship between the insulation level and the fault information. Accordingly, the fault information determination unit is also used for when the target index information is less than the first index threshold, the target insulation level of the target electrical equipment is the first level, the fault information of the target electrical equipment corresponding to the first level is that the target electrical equipment is operating normally, and the target electrical equipment is inspected according to the first preset period; when the target index information is greater than the first index threshold, and the target index information is less than the second index threshold, the target insulation level of the target electrical equipment is the second level, the fault information of the target electrical equipment corresponding to the second level is that there is a partial discharge inside the target electrical equipment, and the target electrical equipment is inspected according to the second preset period; the first preset period is greater than the second preset period; when the target index information is greater than the second index threshold, the target insulation level of the target electrical equipment is the third level, and the fault information of the target electrical equipment corresponding to the third level is to immediately stop running the target electrical equipment and inspect the target electrical equipment.

[0093] On the basis of the above embodiment, the detection device may optionally include at least one of a partial discharge detection instrument, an optical sensor and an ultrasonic sensor. The data determination module is also used to determine the discharge intensity inside the target electrical device based on at least one of the electromagnetic signal, the optical signal and the acoustic wave signal if the detection device is a partial discharge detection instrument, the test data during the discharge process inside the target electrical device is an electromagnetic signal; if the detection device is an optical sensor, the test data during the discharge process inside the target electrical device is an optical signal; if the detection device is an ultrasonic sensor, the test data during the discharge process inside the target electrical device is an acoustic wave signal.

[0094] Based on the above embodiment, optionally, the fault information also includes location information of the discharge source inside the target electrical equipment; the fault information determination module includes a location information determination unit, the location information determination unit is used to take the two discharge intensities with the largest intensity values ​​among the discharge intensities as reference discharge intensities, and determine the test distance between the gas test points corresponding to the reference discharge intensities; determine the location information of the discharge source according to the reference discharge intensity and the test distance.

[0095] Based on the above embodiment, optionally, the gas analysis module also includes an insulation level determination unit, which is used to determine a reference insulation state of the target electrical equipment based on the gas type and gas concentration; there is a correlation between the gas type and gas concentration and the reference insulation state; the reference insulation state is used to reflect the insulation level of the target electrical equipment; determine a comparison result between the reference insulation state and the target insulation level, and update the target insulation level of the target electrical equipment based on the comparison result.

[0096] The detection and analysis device for the C4F7N / CO2 mixed gas provided in the embodiment of the present invention can execute the detection and analysis method for the C4F7N / CO2 mixed gas provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0097] Embodiment 4

[0098] According to an embodiment of the present disclosure, the present disclosure also provides an electronic device, a readable storage medium and a computer program product.

[0099] Figure 4 The structural schematic diagram of the electronic device of the detection and analysis method of the C4F7N / CO2 mixed gas that can be used to implement the embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are only examples, and are not intended to limit the implementation of the present invention described and / or required herein.

[0100] like Figure 4 As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0101] A number of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0102] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the detection and analysis method of the C4F7N / CO2 mixed gas.

[0103] In some embodiments, the detection and analysis method of the C4F7N / CO2 mixed gas can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the detection and analysis method of the C4F7N / CO2 mixed gas described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to perform the detection and analysis method of the C4F7N / CO2 mixed gas by any other appropriate means (for example, by means of firmware).

[0104] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0105] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0106] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0107] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0108] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0109] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0110] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0111] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for detecting and analyzing C4F7N / CO2 mixed gas, characterized in that: The method comprises: Determine a gas sampling point of a target electrical device, wherein the gas sampling point is located inside the target electrical device and within a first preset range from the C4F7N / CO2 mixed gas; The gas collected at the gas sampling point is used as a target gas sample, and a gas composition analysis is performed on the target gas sample to obtain a gas type and a gas concentration corresponding to the target gas sample; Determine a gas test point of the target electrical device, wherein the gas test point is located outside the target electrical device and within a second preset range from the C4F7N / CO2 mixed gas; Acquiring test data during the internal discharge process of the target electrical device through a detection device at the gas test point, and determining the discharge intensity inside the target electrical device according to the test data; Fault information of the target electrical device is determined according to the gas type, the gas concentration, and the discharge intensity, and the gas type, the gas concentration, and the discharge intensity are associated with the fault information.

2. The method according to claim 1, characterized in that Determining fault information of the target electrical device according to the gas type, the gas concentration and the discharge intensity includes: Determine a concentration threshold corresponding to each gas type, and determine first indicator information of the gas type according to the concentration threshold corresponding to the gas type and the gas concentration; Determine an intensity threshold of the internal discharge intensity of the target electrical device, and determine second indicator information of the C4F7N / CO2 mixed gas according to the intensity threshold and the discharge intensity; Determine the target index information of the C4F7N / CO2 mixed gas according to the first index information and the second index information; the target index information is used to reflect the insulation state of the target electrical equipment; The target insulation level of the target electrical equipment is determined according to the target indicator information and a preset indicator threshold, and the fault information of the target electrical equipment is determined according to the target insulation level.

3. The method according to claim 2, characterized in that Determining target index information of the C4F7N / CO2 mixed gas according to the first index information and the second index information includes: Determine first weight information of each of the first indicator information and second weight information of each of the second indicator information; Based on the first weight information and the second weight information, the first index information and the second index information are weighted and summed to obtain the target index information of the C4F7N / CO2 mixed gas.

4. The method according to claim 2, characterized in that: The preset index threshold includes a first index threshold and a second index threshold, and there is a corresponding relationship between the insulation level and the fault information; Correspondingly, determining the target insulation level of the target electrical equipment according to the target indicator information and the preset indicator threshold, and determining the fault information of the target electrical equipment according to the target insulation level, includes: When the target indicator information is less than the first indicator threshold, the target insulation level of the target electrical equipment is the first level, the fault information of the target electrical equipment corresponding to the first level is that the target electrical equipment operates normally, and the target electrical equipment is inspected according to a first preset period; When the target indicator information is greater than the first indicator threshold value, and the target indicator information is less than the second indicator threshold value, the target insulation level of the target electrical equipment is the second level, the fault information of the target electrical equipment corresponding to the second level is that there is partial discharge inside the target electrical equipment, and the target electrical equipment is inspected according to the second preset period; the first preset period is greater than the second preset period; When the target indicator information is greater than the second indicator threshold, the target insulation level of the target electrical equipment is the third level, and the fault information of the target electrical equipment corresponding to the third level is to immediately stop running the target electrical equipment and inspect the target electrical equipment.

5. The method according to claim 1, characterized in that The detection device may include at least one of a partial discharge detection instrument, an optical sensor, and an ultrasonic sensor; Accordingly, obtaining test data during the internal discharge process of the target electrical device through a detection device at the gas test point, and determining the discharge intensity inside the target electrical device according to the test data, includes: If the detection device is a partial discharge detection instrument, the test data during the internal discharge process of the target electrical device is an electromagnetic signal; If the detection device is an optical sensor, the test data during the internal discharge process of the target electrical device is an optical signal; If the detection device is an ultrasonic sensor, the test data during the internal discharge process of the target electrical device is a sound wave signal; Based on at least one of the electromagnetic signal, the optical signal, and the acoustic signal, a discharge intensity inside the target electrical device is determined.

6. The method according to claim 1, characterized in that The fault information also includes location information of a discharge source inside the target electrical device; determining the fault information of the target electrical device according to the gas type, the gas concentration and the discharge intensity includes: Taking the two discharge intensities with the largest intensity values ​​among the discharge intensities as reference discharge intensities, and determining the test distance between the gas test points corresponding to the reference discharge intensities; The position information of the discharge source is determined according to the reference discharge intensity and the test distance.

7. The method according to claim 2, characterized in that After obtaining the gas type and gas concentration corresponding to the target gas sample, the method further includes: Determine the reference insulation state of the target electrical device according to the gas type and gas concentration; there is a correlation between the gas type and gas concentration and the reference insulation state; the reference insulation state is used to reflect the insulation level of the target electrical device; A comparison result between the reference insulation state and the target insulation level is determined, and the target insulation level of the target electrical device is updated according to the comparison result.

8. A detection and analysis device for C4F7N / CO2 mixed gas, characterized in that: The device comprises: A sampling point determination module, used to determine a gas sampling point of a target electrical device, wherein the gas sampling point is located inside the target electrical device and is within a first preset range from the C4F7N / CO2 mixed gas; A gas analysis module, used to use the gas collected at the gas sampling point as a target gas sample, perform gas composition analysis on the target gas sample, and obtain the gas type and gas concentration corresponding to the target gas sample; A test point determination module, used to determine a gas test point of the target electrical device, wherein the gas test point is located outside the target electrical device and within a second preset range from the C4F7N / CO2 mixed gas; A data determination module, used to obtain test data during the internal discharge process of the target electrical device through a detection device at the gas test point, and determine the discharge intensity inside the target electrical device according to the test data; The fault information determination module is used to determine the fault information of the target electrical equipment according to the gas type, the gas concentration and the discharge intensity, and the gas type, the gas concentration and the discharge intensity are associated with the fault information.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can perform the detection and analysis method of the C4F7N / CO2 mixed gas described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the detection and analysis method of the C4F7N / CO2 mixed gas according to any one of claims 1 to 7 when executed.

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