An intelligent switch device for environmentally friendly gas ring network cabinet

Abstract

The present invention relates to the technical field of power switches, and in particular to an intelligent switch device of an environmentally friendly gas ring network cabinet, comprising: a closed chamber; a switch assembly, arranged in the closed chamber, comprising a main switch and a plurality of auxiliary switches, wherein the plurality of auxiliary switches are used to individually control each power supply line, and the main switch is used to control the plurality of auxiliary switches; a detection assembly periodically acquires power supply line detection data and environmental detection data; a central control platform determines environmental safety based on environmental detection data, adjusts the environment, or alarms, determines line safety based on power supply line detection data, generates control instructions, and regulates the switch assembly; a self-test platform collects images in real time during the regulation process of the switch assembly, determines whether the switch assembly generates arc light and the actual frequency of the arc light, determines the safety of the switch assembly, and repairs or replaces the switch assembly based on the switch assembly safety judgment result. The present invention improves the safety of the switch device regulation process.

Description

Technical Field

[0001] The present invention relates to the technical field of power switches, and in particular to an intelligent switch device for an environmentally friendly gas ring network cabinet. Background Art

[0002] In the power system, ring main units are key power distribution equipment and are widely used in power generation, transmission, distribution and power conversion. Traditional ring main units mostly adopt ordinary switch cabinet design, rely on manual operation, and internal gas management is often neglected. Long-term use may lead to equipment performance degradation and safety hazards.

[0003] The patent document with Chinese patent application number CN117477416A discloses an environmentally friendly and safe gas ring network cabinet, including a base cabinet; a gas box is fixedly connected to the top surface of the base cabinet; a load switch is fixedly connected to the bottom of the gas box, and a control panel is installed on one side of the gas box for controlling the load switch; the connecting end at the bottom of the load switch is located inside the base cabinet; a grounding terminal is installed at the connecting end at the bottom of the load switch; the gas box is filled with nitrogen; a gas storage tank is fixedly connected to one side of the gas box, and nitrogen is stored in the gas storage tank; a ventilation component is installed between the gas storage tank and the gas box; when the air pressure in the gas box is insufficient, the ventilation component passes the nitrogen in the gas storage tank into the interior of the gas box.

[0004] The prior art is limited to simple monitoring of the switch status and lacks detailed analysis and monitoring of the dynamic behavior of the switch component during the regulation process, resulting in the problem of low safety of the switch component regulation process. Summary of the invention

[0005] To this end, the present invention provides an intelligent switch device for an environmentally friendly gas ring main unit, which can solve the problem of low switch safety when the ring main unit switch is turned on and off.

[0006] To achieve the above object, the present invention provides an intelligent switch device for an environmentally friendly gas ring main unit, comprising:

[0007] Closed room;

[0008] A switch assembly is arranged in the closed chamber, comprising a main switch and a plurality of auxiliary switches, wherein the plurality of auxiliary switches are used to individually control each power supply line to achieve safe operation of each power supply line, and the main switch is used to control the plurality of auxiliary switches to achieve safe operation of the overall power supply line of the ring main unit;

[0009] A detection component, used for periodically acquiring power supply line detection data and environmental detection data inside the gas ring main unit;

[0010] A central control platform, used to determine the environmental safety of the closed room based on the environmental detection data, and to adjust the environment or alarm based on the determination result of the environmental safety;

[0011] and, determining line safety based on the power supply line detection data, generating a control instruction based on the line safety, so as to regulate the switch component according to the control instruction;

[0012] The self-inspection platform is used to collect images in real time during the control process of the switch component, analyze a number of images, determine whether the switch component generates arc light and the actual frequency of the arc light based on the analysis results, obtain the judgment result, determine the safety of the switch component based on the judgment result, and repair or replace the switch component based on the switch component safety judgment result.

[0013] Furthermore, the detection component comprises:

[0014] Infrared thermal imager, used to detect the temperature value of any power supply line in real time during the detection period and obtain several real-time temperature values;

[0015] A current sensor is used to detect the current value of any power supply line in real time within a detection period to obtain a number of real-time current values;

[0016] A gas detector, used to detect the density of the inert gas in the closed chamber in real time during a detection period and obtain a number of real-time density values;

[0017] The humidity sensor is used to detect the humidity in the density chamber in real time during a detection period and obtain a plurality of real-time humidity values.

[0018] Furthermore, the central control platform includes:

[0019] An environmental analysis module, configured to calculate the leakage rate of the inert gas based on the real-time density values, determine the gas safety based on the calculation result, compare the real-time humidity values ​​with the preset humidity range, and determine the humidity safety based on the comparison result;

[0020] an environment control module, connected to the environment analysis module, for generating a gas control instruction based on the gas safety judgment result to adjust the inert gas in the closed chamber or adjust the closed chamber, and for generating a humidity control instruction based on the humidity safety judgment result to adjust the humidity in the closed chamber;

[0021] A circuit analysis module, used to draw a current change curve graph based on the real-time current values, draw a temperature change curve graph based on the real-time temperature values, analyze the current change curve graph and the temperature change curve graph, and judge the circuit safety according to the analysis results;

[0022] The instruction generation module is connected to the line analysis module and is used to generate corresponding control instructions according to the line safety analysis results.

[0023] Furthermore, the environmental analysis module includes:

[0024] A calculation unit, used for calculating the leakage rate based on the real-time density values ​​detected and acquired at adjacent moments;

[0025] A first judgment unit, connected to the calculation unit, is used to draw a leakage change curve based on the leakage rates, analyze the change trend and change rate of the leakage change curve, and judge the gas safety based on the analysis result;

[0026] The second judgment unit is used to compare the real-time humidity values ​​with the preset humidity range, calculate the actual proportion of the real-time humidity values ​​within the preset humidity range, and judge the humidity safety based on the comparison result between the actual proportion and the preset proportion.

[0027] Furthermore, the first determining unit includes:

[0028] A trend analysis subunit, used to calculate the slope value corresponding to each point on the leakage change curve, and determine the change trend of the leakage change curve according to the slope value analysis result;

[0029] The rate analysis subunit is used to calculate the leakage rate difference corresponding to adjacent points on the leakage change curve, obtain a number of leakage rate differences, and calculate the average of the several leakage rate differences to determine the change rate.

[0030] Furthermore, the line analysis module includes:

[0031] an identification unit, used for identifying a current abnormal area in the current change curve diagram and a temperature abnormal area in the temperature change curve diagram;

[0032] An analysis unit is connected to the identification unit and is used to analyze the correlation between the abnormal current area and the abnormal temperature area, and judge the safety of the line based on the analysis result.

[0033] Furthermore, the analysis unit comprises:

[0034] A calculation subunit, used for identifying an overlapping area between the abnormal current area and the abnormal temperature area on a time axis, and calculating an overlapping degree based on the overlapping area;

[0035] A correlation analysis subunit, connected to the calculation subunit, for analyzing the change trend between the current curve and the temperature curve in the overlapping area when the overlap degree is greater than a preset threshold, and obtaining the correlation between the abnormal current area and the abnormal temperature area according to the analysis result;

[0036] The safety judgment subunit is connected to the correlation analysis subunit and is used to judge the safety of the line based on the correlation.

[0037] Furthermore, the instruction generation module includes:

[0038] An instruction judgment unit is used to judge the proportion of power supply lines with low line safety among the power supply lines, obtain the actual line proportion, and compare the actual line proportion with the preset line proportion based on the line proportion result to generate an instruction;

[0039] The instruction generating unit is connected to the instruction judging unit, and is used to generate a main switch disconnection instruction when the actual line proportion is greater than or equal to the preset line proportion, and to generate a secondary switch disconnection instruction when the actual line proportion is less than the preset line proportion.

[0040] Furthermore, the self-checking platform comprises:

[0041] An image capture unit, used to capture a continuous sequence of images at a preset frame rate to obtain a number of real-time images during the control process of the switch component;

[0042] A preprocessing unit, connected to the image capturing unit, for performing denoising processing on a plurality of the real-time images;

[0043] A feature extraction unit connected to the preprocessing unit, used to analyze the preprocessed real-time image, and extract a brightness mutation area as a characterization feature based on the analysis result;

[0044] an arc detection unit connected to the feature extraction unit, for detecting whether an arc phenomenon exists in the real-time image by using a machine learning algorithm based on the characterization feature, and determining the number of arc images containing arc light, determining an actual frequency based on the number of arc images and a total number of real-time images, and determining an arc intensity based on a brightness value;

[0045] A safety assessment unit is connected to the arc detection unit, and is used to compare the arc intensity with an intensity threshold to obtain an intensity comparison result, compare the actual frequency with a preset frequency to obtain a frequency comparison result, and assess the safety of the switch assembly based on the intensity comparison result and the frequency comparison result.

[0046] Furthermore, the safety assessment unit includes:

[0047] An intensity comparison subunit, used for comparing the arc light intensity with an intensity threshold to obtain an intensity comparison result;

[0048] A frequency comparison subunit, used to compare the actual frequency with a preset frequency to obtain a frequency comparison result;

[0049] The evaluation subunit is used to evaluate the safety of the switch assembly as low when the arc intensity is greater than or equal to the intensity threshold and the actual frequency is greater than or equal to a preset frequency.

[0050] Compared with the prior art, the beneficial effect of the present invention lies in that, by periodically acquiring power supply line detection data through the detection component, the central control platform can analyze the line safety in real time, and generate control instructions accordingly to accurately adjust the switch component, effectively avoiding safety hazards such as line overload and short circuit, and ensuring the overall safe operation of each power supply line and ring network cabinet. The environmental detection data is used to evaluate the environmental safety of the closed room to prevent equipment failure or safety accidents caused by environmental factors. The self-inspection platform collects and analyzes images in the switch component regulation process in real time, and can promptly detect and judge arc generation and its actual frequency, discover potential problems, and repair or replace them in time, avoiding fault expansion and sudden shutdown, and realizing preventive maintenance of equipment. The closed room design, combined with environmental detection and adjustment functions, helps to maintain a stable equipment operating environment, reduce the impact of environmental fluctuations on equipment performance, and improve the control safety of the switch component.

[0051] In particular, by setting the environmental analysis module to calculate the inert gas leakage rate through the real-time density value, combined with the comparison of the humidity value, the gas safety and humidity safety in the closed room can be comprehensively and accurately evaluated, which is helpful to timely discover and deal with potential environmental safety hazards. By setting the environmental control module based on the judgment result of the environmental analysis module, the corresponding control instructions can be quickly generated and executed, thereby improving the response speed and control efficiency. By setting the line analysis module to draw the change curve of the current and temperature and conduct in-depth analysis, the safety of the power supply line can be accurately judged. By setting the instruction generation module according to the result of the line analysis module, the control instructions can be intelligently generated, the switch components can be accurately controlled, the stability and reliability of the switch equipment can be improved, and the safety of the operation of the gas ring network cabinet can be ensured.

[0052] In particular, by capturing a continuous sequence of images at a preset frame rate, real-time monitoring of the switch component control process is ensured. By setting the preprocessing unit to perform denoising on the real-time image, the image quality is effectively improved, the influence of noise on subsequent feature extraction and arc detection is reduced, and the accuracy and reliability of detection are improved. By setting the feature extraction unit to perform in-depth analysis on the preprocessed image and extracting the brightness mutation area as the characterization feature, the image features related to the arc phenomenon can be accurately captured, providing strong support for subsequent detection. By setting the arc detection unit to detect the arc phenomenon in the real-time image based on the machine learning algorithm, comprehensive and accurate data support is provided for the safety assessment of the switch component. By setting the safety assessment unit to compare the arc intensity with the intensity threshold, the actual frequency with the preset frequency, the safety of the switch component is comprehensively assessed, and the safety status of the switch component during the control process is objectively reflected, providing a decision-making basis for subsequent repair or replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 A schematic diagram of the structure of an intelligent switch device of an environmentally friendly gas ring main unit provided by an embodiment of the present invention;

[0054] Figure 2 A structural block diagram of the central control platform in the intelligent switchgear of the environmentally friendly gas ring main unit provided in an embodiment of the present invention;

[0055] Figure 3 A structural block diagram of an environmental analysis module in an intelligent switchgear of an environmentally friendly gas ring main unit provided in an embodiment of the present invention;

[0056] Figure 4 This is a structural block diagram of a line analysis module in an intelligent switch device of an environmentally friendly gas ring main unit provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0057] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0058] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0059] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0060] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] See also Figure 1 As shown, an intelligent switch device of an environmentally friendly gas ring main unit according to an embodiment of the present invention includes:

[0062] Confined room 8;

[0063] The switch assembly is arranged in the closed chamber 8, and includes a main switch 1 and a plurality of auxiliary switches 4, wherein the plurality of auxiliary switches 4 are used to individually control each power supply line 5 to achieve safe operation of each power supply line, and the main switch is used to control the plurality of auxiliary switches to achieve safe operation of the overall power supply line of the ring main unit;

[0064] A detection component, used for periodically acquiring power supply line detection data and environmental detection data inside the gas ring main unit;

[0065] A central control platform, used to determine the environmental safety of the closed room based on the environmental detection data, and to adjust the environment or alarm based on the determination result of the environmental safety;

[0066] and, determining line safety based on the power supply line detection data, generating a control instruction based on the line safety, so as to regulate the switch component according to the control instruction;

[0067] The self-inspection platform is used to collect images in real time during the control process of the switch component, analyze a number of images, determine whether the switch component generates arc light and the actual frequency of the arc light based on the analysis results, obtain the judgment result, determine the safety of the switch component based on the judgment result, and repair or replace the switch component based on the switch component safety judgment result.

[0068] Specifically, the intelligent switch device in the embodiment of the present invention is arranged inside the gas ring main unit to ensure the safety inside the ring main unit.

[0069] Specifically, the embodiment of the present invention periodically obtains power supply line detection data through the detection component. The central control platform can analyze the line safety in real time and generate control instructions to accurately adjust the switch component accordingly, effectively avoiding safety hazards such as line overload and short circuit, and ensuring the overall safe operation of each power supply line and ring network cabinet. The environmental detection data is used to evaluate the environmental safety of the closed room to prevent equipment failure or safety accidents caused by environmental factors. The self-inspection platform collects and analyzes images in the switch component regulation process in real time, and can promptly detect and judge arc generation and its actual frequency, discover potential problems, and repair or replace them in time, avoiding fault expansion and sudden shutdown, and realizing preventive maintenance of equipment. The closed room design, combined with environmental detection and adjustment functions, helps to maintain a stable equipment operating environment, reduce the impact of environmental fluctuations on equipment performance, and improve the control safety of the switch component.

[0070] Continue reading Figure 1 As shown, the detection component includes:

[0071] Infrared thermal imager 7, used to detect the temperature value of any power supply line in real time during the detection period and obtain several real-time temperature values;

[0072] A current sensor 6, used to detect the current value of any power supply line in real time during a detection period, and obtain a number of real-time current values;

[0073] A gas detector 2, used to detect the density of the inert gas in the closed chamber in real time during a detection period and obtain a number of real-time density values;

[0074] The humidity sensor 3 is used to detect the humidity in the density chamber in real time during a detection period and obtain a number of real-time humidity values.

[0075] See also Figure 2 As shown, the central control platform includes:

[0076] The environmental analysis module 10 is used to calculate the leakage rate of the inert gas based on the real-time density values, judge the gas safety based on the calculation result, compare the real-time humidity values ​​with the preset humidity range, and judge the humidity safety based on the comparison result;

[0077] The environment control module 20 is connected to the environment analysis module, and is used to generate a gas control instruction based on the judgment result of the gas safety to adjust the inert gas in the closed chamber or adjust the closed chamber, and to generate a humidity control instruction based on the judgment result of the humidity safety to adjust the humidity in the closed chamber;

[0078] A circuit analysis module 30, for drawing a current change curve graph based on a number of the real-time current values, drawing a temperature change curve graph based on a number of the real-time temperature values, analyzing the current change curve graph and the temperature change curve graph, and judging circuit safety according to the analysis results;

[0079] The instruction generation module 40 is connected to the line analysis module and is used to generate corresponding control instructions according to the line safety analysis result.

[0080] Specifically, the embodiment of the present invention calculates the inert gas leakage rate through the real-time density value by setting the environmental analysis module, and combines the comparison of humidity values ​​to comprehensively and accurately evaluate the gas safety and humidity safety in the closed room, which is helpful to timely discover and deal with potential environmental safety hazards. By setting the environmental control module based on the judgment result of the environmental analysis module, it can quickly generate and execute corresponding control instructions, thereby improving the response speed and control efficiency. By setting the line analysis module to draw the change curve of current and temperature and conduct in-depth analysis, it can accurately judge the safety of the power supply line. By setting the instruction generation module, according to the result of the line analysis module, the control instructions are intelligently generated, the switch components are accurately controlled, the stability and reliability of the switch equipment are improved, and the safety of the operation of the gas ring network cabinet is ensured.

[0081] See also Figure 3 As shown, the environment analysis module 10 includes:

[0082] A calculation unit 11, configured to calculate the leakage rate based on the real-time density values ​​detected and acquired at adjacent moments;

[0083] A first judgment unit 12, connected to the calculation unit, is used to draw a leakage change curve based on the leakage rates, analyze the change trend and change rate of the leakage change curve, and judge the gas safety based on the analysis result;

[0084] The second judgment unit 13 is used to compare the real-time humidity values ​​with the preset humidity range, calculate the actual proportion of the real-time humidity values ​​within the preset humidity range, and judge the humidity safety based on the comparison result between the actual proportion and the preset proportion.

[0085] Specifically, assuming that the real-time density value obtained at time t1 is ρ1, and the real-time density value obtained at time t2 is ρ2, then the leakage rate = (t2-t1) / (ρ1-ρ2), where t2 is the time after t1.

[0086] Specifically, the preset humidity range of the embodiment of the present invention is a relative humidity of 50% to 70%, wherein the relative humidity is the percentage of the actual water vapor pressure in the air to the saturated water vapor pressure at the same temperature. One calculation method is the percentage of the actual water vapor density (d1) contained in the unit volume of air to the saturated water vapor density (d2) at the same temperature. The formula is RH (%) = d1 / d2x100%;

[0087] The preset proportion is 90%.

[0088] Specifically, the second judgment unit in the embodiment of the present invention includes:

[0089] When the actual proportion is greater than or equal to the preset proportion, the humidity safety is high;

[0090] When the actual proportion is less than the preset proportion, the humidity safety is low.

[0091] Specifically, an embodiment of the present invention includes not adjusting the humidity in the closed chamber when the humidity safety is high, and adjusting the humidity in the closed chamber by a humidity regulating device when the humidity safety is low, and stopping the humidity regulating device when the humidity is ensured to remain within a preset safety range. The humidity regulating device may include but is not limited to a humidifier and a dehumidifier, and automatically starts or stops according to the humidity adjustment instruction of the central control platform to achieve precise control of the humidity in the closed chamber.

[0092] Specifically, the first judgment unit includes:

[0093] A trend analysis subunit, used to calculate the slope value corresponding to each point on the leakage change curve, and determine the change trend of the leakage change curve according to the slope value analysis result;

[0094] The rate analysis subunit is used to calculate the leakage rate difference corresponding to adjacent points on the leakage change curve, obtain a number of leakage rate differences, and calculate the average of the several leakage rate differences to determine the change rate.

[0095] Specifically, the embodiment of the present invention determines the change trend of the leakage change curve according to the slope value analysis result, including:

[0096] When the slope value is positive and gradually increases, the change trend is an upward trend;

[0097] When the slope value is less than or equal to 0 and gradually increases, the change trend is a downward trend;

[0098] When the slope value fluctuates within a preset range, the change trend is a stable trend.

[0099] Specifically, the preset range in the embodiment of the present invention is ±0.5 of the slope value corresponding to the first point on the leakage change curve.

[0100] Specifically, the embodiment of the present invention generates a gas control instruction based on the judgment result of the gas safety to adjust the inert gas in the closed chamber or repair the closed chamber, including:

[0101] When the change trend is an upward trend and the change rate is greater than a preset rate, the gas safety is low, and the closed chamber is replaced;

[0102] When the change trend is an upward trend and the change rate is less than or equal to a preset rate, the sealed chamber is inspected to determine whether cracks or openings appear, the cracks and openings are repaired, and inert gas is added to the sealed chamber;

[0103] When the change trend is stable, the gas safety is low, and the inert gas value is supplemented in the closed chamber;

[0104] When the change trend is a downward trend, the gas safety is high, and the closed environment continues to be monitored.

[0105] Specifically, the embodiment of the present invention also includes an alarm when the humidity safety is low and the gas safety is low.

[0106] See also Figure 4 As shown, the line analysis module 30 includes:

[0107] An identification unit 31, used for identifying a current abnormal area in the current change curve diagram and a temperature abnormal area in the temperature change curve diagram;

[0108] The analyzing unit 32 is connected to the identifying unit 31 and is used to analyze the correlation between the abnormal current area and the abnormal temperature area, and judge the line safety based on the analysis result.

[0109] Specifically, the identification unit described in the embodiment of the present invention includes:

[0110] A current identification subunit, used to identify a high current area or a low current area beyond a normal range in the current change curve diagram by setting a threshold value, and mark it as an abnormal current area;

[0111] The temperature identification subunit is used to detect the area with a temperature greater than a preset temperature range in the temperature change curve diagram through a preset threshold value, and mark it as an abnormal temperature area.

[0112] Specifically, the preset current range in the embodiment of the present invention is ±10% of the rated current of the power supply line;

[0113] The preset temperature range is set according to the working environment temperature of the equipment and the heat resistance of the material, for example, set to ±5°C of the maximum allowable temperature when the equipment is operating normally.

[0114] Specifically, the analysis unit will first compare the correspondence between the abnormal current area and the abnormal temperature area on the time axis. If the two are highly overlapped in time, it is possible that the abnormal fluctuation of current directly caused the abnormal temperature rise, thus pointing to electrical faults such as overload and short circuit. On the contrary, if there is no obvious correlation between the two in time, then other factors may need to be further considered, such as changes in ambient temperature, equipment aging, or cooling system failure.

[0115] Specifically, the analysis unit includes:

[0116] A calculation subunit, used for identifying an overlapping area between the abnormal current area and the abnormal temperature area on a time axis, and calculating an overlapping degree based on the overlapping area;

[0117] A correlation analysis subunit, connected to the calculation subunit, for analyzing the change trend between the current curve and the temperature curve in the overlapping area when the overlap degree is greater than a preset threshold, and obtaining the correlation between the abnormal current area and the abnormal temperature area according to the analysis result;

[0118] The safety judgment subunit is connected to the correlation analysis subunit and is used to judge the safety of the line based on the correlation.

[0119] Specifically, the overlap degree described in the embodiment of the present invention is to determine the overlapping period based on the period corresponding to the current abnormal area and the period corresponding to the temperature abnormal area, and compare the overlapping period with the smaller of the total period of the current abnormal area and the total period of the temperature abnormal area, and the obtained ratio is the overlap degree.

[0120] Specifically, the preset threshold in the embodiment of the present invention is 80%. When the overlap is greater than the preset threshold, it indicates that there is a significant time correlation between the current and the temperature anomaly, and further analysis of the change trend between the two is required.

[0121] Specifically, the correlation analysis subunit of the embodiment of the present invention analyzes the change trend between the current curve and the temperature curve in the overlapping area, including:

[0122] When the current curve shows an upward trend in the overlapping area and the temperature curve also rises synchronously, it is judged that the increase in current leads to an increase in temperature, there may be an overload or short circuit risk, and the line safety is low;

[0123] When the current curve shows a downward trend in the overlapping area, but the temperature curve continues to rise or is greater than the preset temperature range, it is judged that there may be an internal fault in the equipment or poor heat dissipation, and the line safety is low;

[0124] If the current curve and the temperature curve have different changing trends in the overlapping area, such as the current decreases while the temperature increases, or the current is stable while the temperature fluctuates, continue to monitor the power supply line;

[0125] When the current curve and the temperature curve remain stable or within the normal fluctuation range in the overlapping area, and there is no significant correlation between their changing trends, it is judged that the line is operating normally and the line safety is high.

[0126] Specifically, the instruction generation module includes:

[0127] An instruction judgment unit is used to judge the proportion of power supply lines with low line safety among the power supply lines, obtain the actual line proportion, and compare the actual line proportion with the preset line proportion based on the line proportion result to generate an instruction;

[0128] The instruction generating unit is connected to the instruction judging unit, and is used to generate a main switch disconnection instruction when the actual line proportion is greater than or equal to the preset line proportion, and to generate a secondary switch disconnection instruction when the actual line proportion is less than the preset line proportion.

[0129] Specifically, the preset proportion described in the embodiment of the present invention is 1 / 3.

[0130] Specifically, the self-checking platform includes:

[0131] An image capture unit, used to capture a continuous sequence of images at a preset frame rate to obtain a number of real-time images during the control process of the switch component;

[0132] A preprocessing unit, connected to the image capturing unit, for performing denoising processing on a plurality of the real-time images;

[0133] A feature extraction unit connected to the preprocessing unit, used to analyze the preprocessed real-time image, and extract a brightness mutation area as a characterization feature based on the analysis result;

[0134] an arc detection unit connected to the feature extraction unit, for detecting whether an arc phenomenon exists in the real-time image by using a machine learning algorithm based on the characterization feature, and determining the number of arc images containing arc light, determining an actual frequency based on the number of arc images and a total number of real-time images, and determining an arc intensity based on a brightness value;

[0135] A safety assessment unit is connected to the arc detection unit, and is used to compare the arc intensity with an intensity threshold to obtain an intensity comparison result, compare the actual frequency with a preset frequency to obtain a frequency comparison result, and assess the safety of the switch assembly based on the intensity comparison result and the frequency comparison result.

[0136] Specifically, the embodiment of the present invention captures a continuous image sequence by preset frame rate, thereby ensuring real-time monitoring of the switch component control process; by setting the preprocessing unit to perform denoising on the real-time image, the image quality is effectively improved, the influence of noise on subsequent feature extraction and arc detection is reduced, and the accuracy and reliability of detection are improved; by setting the feature extraction unit to perform in-depth analysis on the preprocessed image and extract the brightness mutation area as the characterization feature, the image features related to the arc phenomenon can be accurately captured, providing strong support for subsequent detection; by setting the arc detection unit to detect the arc phenomenon in the real-time image based on the machine learning algorithm, comprehensive and accurate data support is provided for the safety assessment of the switch component; by setting the safety assessment unit to compare the arc intensity with the intensity threshold, the actual frequency with the preset frequency, the safety of the switch component is comprehensively assessed, the safety status of the switch component during the control process is objectively reflected, and a decision-making basis is provided for subsequent repair or replacement.

[0137] Specifically, the brightness mutation area described in the feature extraction unit of the embodiment of the present invention is an area where the difference between adjacent brightness values ​​is greater than 0 and the brightness value is greater than the preset brightness threshold.

[0138] Specifically, the intensity threshold in the embodiment of the present invention is 100 candelas / square meter, and the preset frequency is 1 / 10.

[0139] Specifically, the embodiment of the present invention uses a machine learning algorithm based on the characterization features to detect whether there is an arc phenomenon in the real-time image, including:

[0140] Construct a training dataset containing various arc light phenomenon samples, including arc lights of different intensities. In the training dataset, each sample is labeled as "arc light exists" or "arc light does not exist" and is accompanied by the arc light intensity information.

[0141] The deep learning technology convolutional neural network (CNN) is used as the core of the machine learning algorithm. During the training stage, the pre-processed real-time image is input into the CNN model, and the model parameters are continuously adjusted through the back propagation algorithm, so that the model can accurately distinguish whether there is arc light phenomenon in the image.

[0142] Specifically, the embodiment of the present invention calculates the average intensity of the arc light as the arc light intensity according to the brightness distribution of the arc light in the image.

[0143] Specifically, the safety assessment unit includes:

[0144] An intensity comparison subunit, used for comparing the arc light intensity with an intensity threshold to obtain an intensity comparison result;

[0145] A frequency comparison subunit, used to compare the actual frequency with a preset frequency to obtain a frequency comparison result;

[0146] The evaluation subunit is used to evaluate the safety of the switch assembly as low when the arc intensity is greater than or equal to the intensity threshold and the actual frequency is greater than or equal to a preset frequency.

[0147] Specifically, the embodiment of the present invention includes replacing the switch assembly when the safety of the switch assembly is assessed to be low, and repairing the switch assembly when the safety of the switch assembly is assessed to be high.

[0148] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0149] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent switch device for an environmentally friendly gas ring main unit, characterized in that: include: Closed room; A switch assembly is arranged in the closed chamber, comprising a main switch and a plurality of auxiliary switches, wherein the plurality of auxiliary switches are used to individually control each power supply line to achieve safe operation of each power supply line, and the main switch is used to control the plurality of auxiliary switches to achieve safe operation of the overall power supply line of the ring main unit; A detection component, used to periodically obtain internal power supply line detection data and environmental detection data of the gas ring main unit; A central control platform, used to determine the environmental safety of the closed room based on the environmental detection data, and to adjust the environment or alarm based on the determination result of the environmental safety; The central control platform includes: An environmental analysis module, for calculating the leakage rate of the inert gas based on a number of real-time density values, judging the gas safety based on the calculation result, and comparing a number of real-time humidity values ​​with a preset humidity range, judging the humidity safety based on the comparison result; an environment control module, connected to the environment analysis module, for generating a gas control instruction based on the gas safety judgment result to adjust the inert gas in the closed chamber or adjust the closed chamber, and for generating a humidity control instruction based on the humidity safety judgment result to adjust the humidity in the closed chamber; A circuit analysis module, used to draw a current change curve graph based on a number of real-time current values, draw a temperature change curve graph based on a number of real-time temperature values, analyze the current change curve graph and the temperature change curve graph, and judge the circuit safety according to the analysis results; An instruction generation module, connected to the line analysis module, for generating corresponding control instructions according to the line safety analysis result; The environmental analysis module includes: A calculation unit, used to calculate the leakage rate based on the real-time density values ​​detected and acquired at adjacent moments; A first judgment unit, connected to the calculation unit, is used to draw a leakage change curve based on the leakage rates, analyze the change trend and change rate of the leakage change curve, and judge the gas safety based on the analysis result; A second judgment unit is used to compare the real-time humidity values ​​with a preset humidity range, calculate the actual proportion of the real-time humidity values ​​within the preset humidity range, and judge the humidity safety based on the comparison result between the actual proportion and the preset proportion; The line analysis module comprises: an identification unit, used for identifying a current abnormal area in the current change curve diagram and a temperature abnormal area in the temperature change curve diagram; an analysis unit, connected to the identification unit, for analyzing the correlation between the abnormal current area and the abnormal temperature area, and judging the safety of the line based on the analysis result; The analysis unit comprises: A calculation subunit, used for identifying an overlapping area between the abnormal current area and the abnormal temperature area on a time axis, and calculating an overlapping degree based on the overlapping area; A correlation analysis subunit, connected to the calculation subunit, for analyzing the change trend between the current curve and the temperature curve in the overlapping area when the overlap degree is greater than a preset threshold, and obtaining the correlation between the abnormal current area and the abnormal temperature area according to the analysis result; A safety judgment subunit, connected to the correlation analysis subunit, for judging the safety of the line based on the correlation of the temperature abnormality area; The self-inspection platform is used to collect images in real time during the control process of the switch component, analyze a number of images, determine whether the switch component generates arc light and the actual frequency of the arc light based on the analysis results, obtain the judgment result, determine the safety of the switch component based on the judgment result, and repair or replace the switch component based on the switch component safety judgment result.

2. The intelligent switch device of the environmental protection gas ring main unit according to claim 1, characterized in that: The detection component comprises: Infrared thermal imager, used to detect the temperature value of any power supply line in real time during the detection period and obtain several real-time temperature values; A current sensor is used to detect the current value of any power supply line in real time within a detection period to obtain a number of real-time current values; A gas detector, used to detect the density of the inert gas in the closed chamber in real time during a detection period and obtain a number of real-time density values; The humidity sensor is used to detect the humidity in the closed chamber in real time during a detection period and obtain a plurality of real-time humidity values.

3. The intelligent switch device of the environmental protection gas ring main unit according to claim 2 is characterized in that: The first judging unit comprises: A trend analysis subunit, used to calculate the slope value corresponding to each point on the leakage change curve, and determine the change trend of the leakage change curve according to the slope value analysis result; A rate analysis subunit, used to calculate the leakage rate difference corresponding to adjacent points on the leakage change curve, obtain a number of leakage rate differences, and calculate the average of the several leakage rate differences to determine the change rate; And, determining the line safety based on the power supply line detection data, generating a control instruction based on the line safety, so as to regulate the switch component according to the control instruction.

4. The intelligent switch device of the environmental protection gas ring main unit according to claim 3 is characterized in that: The instruction generation module comprises: An instruction judgment unit is used to judge the proportion of power supply lines with low line safety among the power supply lines, obtain the actual line proportion, and compare the actual line proportion with the preset line proportion based on the line proportion result to generate an instruction; The instruction generation unit is connected to the instruction judgment unit, and is used to generate a main switch disconnection instruction when the actual line proportion is greater than or equal to the preset line proportion, and to generate a secondary switch disconnection instruction when the actual line proportion is less than the preset line proportion.

5. The intelligent switch device of the environmental protection gas ring main unit according to claim 4, characterized in that: The self-checking platform comprises: An image capture unit, used to capture a continuous sequence of images at a preset frame rate to obtain a number of real-time images during the control process of the switch component; A preprocessing unit, connected to the image capturing unit, for performing denoising processing on a plurality of the real-time images; A feature extraction unit connected to the preprocessing unit, used to analyze the preprocessed real-time image, and extract a brightness mutation area as a characterization feature based on the analysis result; an arc detection unit connected to the feature extraction unit, for detecting whether an arc phenomenon exists in the real-time image by using a machine learning algorithm based on the characterization feature, and determining the number of arc images containing arc light, determining an actual frequency based on the number of arc images and a total number of real-time images, and determining an arc intensity based on a brightness value; A safety assessment unit is connected to the arc detection unit, and is used to compare the arc intensity with an intensity threshold to obtain an intensity comparison result, compare the actual frequency with a preset frequency to obtain a frequency comparison result, and assess the safety of the switch assembly based on the intensity comparison result and the frequency comparison result.

6. The intelligent switch device of the environmental protection gas ring main unit according to claim 5, characterized in that: The safety assessment unit comprises: An intensity comparison subunit, used for comparing the arc light intensity with an intensity threshold to obtain an intensity comparison result; A frequency comparison subunit, used to compare the actual frequency with a preset frequency to obtain a frequency comparison result; The evaluation subunit is used to evaluate the safety of the switch assembly as low when the arc intensity is greater than or equal to the intensity threshold and the actual frequency is greater than or equal to a preset frequency.

Images