Load identification device for low-voltage electricity utilization inspection

Abstract

The invention discloses a low-voltage power utilization inspection load identification device, which relates to the technical field of power utilization inspection and comprises a load monitor body, and a control panel is arranged at the top of the load monitor body. During use, the magnetic isolation cover shields part of electromagnetic interference firstly, and when the magnetic field of the electromagnetic interference reaches the square rubber ring, the hydroxyl iron powder particles are magnetized under the action of the magnetic field to offset part of the external magnetic field. And the square rubber ring adopts a rubber material as a base body, so that the overall anti-electromagnetic interference performance can be improved. The pull plate is moved downwards, the pull rod drives the connecting plate and the limiting rod to move downwards, then one end of the tooth binding strip is pulled, the tooth binding strip is tightened, the square rubber ring is tightly attached to the joint of the load monitor body and the shell, tightness is improved, the electromagnetic interference prevention effect can be improved, and the influence on data acquisition accuracy is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of electricity consumption inspection, and in particular to a low-voltage electricity consumption inspection load identification device. Background Art

[0002] In the power system, voltage levels are usually divided into high voltage, medium voltage, low voltage, etc. Low-voltage power distribution systems are generally used to supply power to end users. The normal operation of low-voltage power equipment and lines is related to the power safety of users and the stability of the power system. Through inspection, potential safety hazards such as aging equipment, damaged lines, and overloads can be found. Load identification in low-voltage power inspection refers to the process of distinguishing and identifying the load characteristics of each power equipment or user in the low-voltage power system. Understanding the load situation helps optimize power distribution. When a low-voltage power system fails, load identification can help staff quickly locate the source of the fault.

[0003] In the prior art, a power load monitor is usually used in low-voltage power inspection load identification to monitor and analyze power loads. It can record load curves in detail, identify load types, and simultaneously monitor and distinguish loads of multiple power-consuming devices. When a power load monitor encounters a complex electromagnetic environment during use, some electromagnetic interference will enter the monitor through the connection of the monitor housing, affecting the normal operation of the electronic components inside the monitor, causing deviations in the collected data, and thus affecting the accuracy and reliability of the load data.

[0004] Therefore, we propose a low-voltage electricity inspection load identification device to solve the problems raised in the above background technology. Summary of the invention

[0005] The purpose of the present invention is to provide a low-voltage electricity inspection load identification device to solve the problem that when the low-voltage electricity inspection load identification device encounters a complex electromagnetic environment during use, some electromagnetic interference will enter the interior through the connection of the device shell, affecting the normal operation of electronic components and causing deviations in the collected data, thereby affecting the accuracy and reliability of the load data.

[0006] To achieve the above object, the present invention provides the following technical solution: a low-voltage power inspection load identification device, comprising a load monitoring instrument body, a control panel is arranged on the top of the load monitoring instrument body, an anti-interference component is arranged on the outer surface of the load monitoring instrument body, and a fixing component is arranged inside the anti-interference component; The anti-interference component includes a magnetic shield, a fixing plate is fixedly installed on the inner wall of the magnetic shield, a square rubber ring is fixedly connected to the top of the fixing plate near the inner wall, a filling cavity is opened inside the square rubber ring, a limit frame is fixedly installed on the top of the fixing plate, a toothed strip is arranged on the top of the limit frame, ten limit rods are arranged on the four sides inside the toothed strip, and ten limit rods distributed in each horizontal direction form a group, and the bottom ends of the four groups of limit rods are fixedly installed with connecting plates, and the bottoms of the four connecting plates are fixedly installed with two pull rods, the outer surfaces of the eight pull rods are movably sleeved with springs, and the bottom ends of the eight pull rods are fixedly installed with pulling plates.

[0007] Preferably, the interior of the filling cavity is filled with hydroxyl iron powder particles, a tensioning rod is fixedly installed on the top of the fixed plate near one of the corners, the outer surface of the tensioning rod is in contact with the outer surface of the tooth tie bar, the front surface of the magnetic isolation cover is provided with a through hole, the front surface of the magnetic isolation cover is provided with a penetration hole near the through hole, and the outer surface of the tooth tie bar is movably embedded in the through hole and the penetration hole.

[0008] Preferably, the bottom ends of the four groups of limit rods are movable and penetrate to the bottom of the fixed plate, the top ends of the four groups of limit rods are respectively located on the four outer surfaces of the square rubber ring, the top ends of the four groups of limit rods are located inside the limit frame, a bottom groove is provided at the bottom of the magnetic isolation cover, and the bottom ends of the eight pull rods are movable and penetrate to the inside of the bottom groove.

[0009] Preferably, the bottom of the control panel is in contact with the top of the magnetic isolation cover, the outer surface of the pulling plate is movably embedded in the bottom groove, one end of the eight springs are fixedly mounted on the bottom surface inside the magnetic isolation cover, two springs distributed in each horizontal direction of the eight springs form a group, and the other ends of the four groups of springs are respectively fixedly mounted on the bottom of four connecting plates, and the tops of the four connecting plates are in contact with the bottom of the fixed plate.

[0010] Preferably, the fixing assembly includes a square plate, an embedded groove is opened inside the square plate, four support blocks are fixedly installed inside the embedded groove, each two adjacent support blocks form a group, a rotating rod is movably embedded between the two groups of support blocks, and gears are movably sleeved on the outer surfaces of the two rotating rods.

[0011] Preferably, the outer surfaces of the two gears are meshedly connected with racks, and the outer surfaces of one side of the two racks are respectively fixedly mounted on the outer surfaces of both sides of the load monitoring instrument body, and the outer surfaces of the two gears away from the racks are meshedly connected with two gear rods, and each two adjacent gear rods of the four gear rods form a group, and movable plates are fixedly mounted on the tops of the two groups of gear rods.

[0012] Preferably, two fixing rods are fixedly installed on the top of the two movable plates, the tops of the four fixing rods are provided with threaded grooves, the insides of the four threaded grooves are threadedly embedded with fixing screws, the tops of the four fixing screws are fixedly installed with convex corner fixing blocks, the top of the control panel is provided with convex corner fixing holes near the four corners, and the tops of the four fixing rods are movably embedded in the four convex corner fixing holes.

[0013] Preferably, the outer surface of the square plate is located inside the magnetic isolation cover, the square plate and the magnetic isolation cover are connected by bolts, the outer surface of the load monitor body is located inside the square rubber ring and the square plate, two movable grooves are opened on both sides of the inside of the square plate, the outer surfaces of the two racks are respectively movably embedded in the four movable grooves, and the bottom ends of the four gear rods are movably penetrated to the bottom of the square plate.

[0014] Preferably, a low-voltage electricity inspection load identification system comprises: a sensor detection module, a data storage module, a communication module, a data acquisition module, a signal processing module, a feature extraction module, a load identification module and a human-computer interaction interface; the sensor detection module is responsible for detecting the current, voltage and other parameters of the low-voltage electricity, the data acquisition module is used to collect various signals detected by the sensor detection module, the signal processing module is used to filter, amplify, analog-to-digital convert and other processes on the original signal collected by the data acquisition module, and convert it into a digital signal, the feature extraction module extracts characteristic parameters that can represent the load characteristics from the processed digital signal, the data storage module is responsible for storing the collected data, processing results and other information, the communication module is used to transmit the stored data and processing results in the data storage module to the human-computer interaction interface, and the human-computer interaction interface facilitates the inspection personnel to use the operation buttons, send operation instructions, and see the collected data and processing results through the display.

[0015] Preferably, the load identification module identifies and classifies the load type and state according to the extracted characteristic parameters using a pre-established load model and identification algorithm. The relevant calculation formula is as follows: ; Where T represents the entire training data set, A represents the feature to be divided, V represents the set of all possible values ​​of the feature, Tv represents the subset of feature A in the training data set T, Ent(T) represents the empirical entropy of the data set T, which is used to measure the degree of confusion of the data set, and Ent(Tv) represents the empirical entropy of the subset Tv.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is used, the magnetic shield first shields part of the electromagnetic interference. When the magnetic field of the electromagnetic interference reaches the square rubber ring, the hydroxyl iron powder particles will be magnetized under the action of the magnetic field, offsetting part of the external magnetic field. The square rubber ring uses rubber material as a matrix, which helps to improve the overall anti-electromagnetic interference performance. Move the pulling plate downward, drive the connecting plate and the limit rod downward through the pull rod, and then pull one end of the tooth tie strip to tighten the tooth tie strip, and tightly attach the square rubber ring to the connection of the load monitor body shell, increase the tightness of the contact between the load monitor body shell connection and the square rubber ring, which is conducive to improving the effect of anti-electromagnetic interference and reducing the impact on data acquisition accuracy.

[0017] 2. When the present invention is used, the load monitor body is placed inside the magnetic shield, the rack is meshed with the gear, and the gear is driven to rotate, so that the gear rod pushes the movable plate and the fixed rod to move upward, so that the convex corner fixing block moves to the top of the convex corner fixing hole, and the convex corner fixing block is rotated to intersect with the position of the convex corner fixing hole, so that the load monitor body is installed inside the magnetic shield. The convex corner fixing block is rotated in the opposite direction to be flush with the convex corner fixing hole, and then the load monitor body is pulled upward to be taken out, so as to prevent the removed bolts from accidentally rolling and being lost when the load monitor body is disassembled. The anti-interference component and the fixed component can be separated by unscrewing the connecting bolts at the magnetic shield and the square plate, so as to facilitate the installation of the tooth tie strip. The anti-interference component and the fixed component are configured to be assembled with the load monitor body and can be replaced separately.

[0018] 3. When the present invention is used, the sensor detection module detects signals such as current and voltage, the data acquisition module collects them, and the signal processing module removes noise interference in the collected signals to improve signal quality. The feature extraction module calculates parameters that can reflect load characteristics from digital signals, the load identification module identifies the extracted feature parameters, the data storage module stores the data, and transmits the load identification data and processing results to the human-computer interaction interface through the communication module, so that the staff can know the load identification of low-voltage power inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A first-angle stereoscopic view of a low-voltage electricity inspection load identification device of the present invention; Figure 2 A second angle stereogram of a low-voltage electricity inspection load identification device of the present invention; Figure 3 It is a structural unfolded stereogram of an anti-interference component in a low-voltage electricity inspection load identification device of the present invention; Figure 4 It is a cross-sectional and expanded stereoscopic diagram of the structure of a magnetic isolation cover in a low-voltage electricity inspection load identification device of the present invention; Figure 5It is a perspective view of the structure of a fixed component in a low-voltage power inspection load identification device of the present invention; Figure 6 It is a structural sectional stereoscopic diagram of a square plate in a low-voltage electricity inspection load identification device of the present invention; Figure 7 It is a structural unfolded stereogram of a connection plate in a low-voltage electricity inspection load identification device of the present invention; Figure 8 It is a structural cross-sectional and expanded stereoscopic diagram of a square rubber ring in a low-voltage electricity inspection load identification device of the present invention; Fig. 9 It is a perspective view of the structure of the tooth tie bar in a low-voltage power inspection load identification device of the present invention; Fig.10 It is a structural unfolded stereogram of a limit frame in a low-voltage electricity inspection load identification device of the present invention; Fig.11 The present invention is a load identification system diagram of a low-voltage electricity inspection load identification device.

[0020] In the figure: 1. Load monitor body; 2. Control panel; 3. Anti-interference component; 301. Magnetic shield; 302. Fixing plate; 303. Square rubber ring; 304. Filling cavity; 305. Limiting frame; 306. Tooth tie strip; 307. Limiting rod; 308. Connecting plate; 309. Pull rod; 310. Spring; 311. Pulling plate; 312. Bottom groove; 313. Tensioning rod; 314. Exit hole; 315. Insertion hole; 4. Fixing component; 401. Square plate; 402. Embedded groove; 4 03. Support block; 404. Rotating rod; 405. Gear; 406. Rack; 407. Gear rod; 408. Moving plate; 409. Fixed rod; 410. Threaded groove; 411. Fixed screw; 412. Movable groove; 413. Protruding angle fixing block; 5. Protruding angle fixing hole; 6. Sensor detection module; 7. Data storage module; 8. Communication module; 9. Data acquisition module; 10. Signal processing module; 11. Feature extraction module; 12. Load identification module; 13. Human-computer interaction interface. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figure 1-Figure 11As shown, the present invention provides a technical solution: a low-voltage power inspection load identification device, comprising a load monitoring instrument body 1, a control panel 2 is arranged on the top of the load monitoring instrument body 1, an anti-interference component 3 is arranged on the outer surface of the load monitoring instrument body 1, and a fixing component 4 is arranged inside the anti-interference component 3; the anti-interference component 3 comprises a magnetic shield 301, a fixing plate 302 is fixedly installed on the inner wall of the magnetic shield 301, a square rubber ring 303 is fixedly connected to the top of the fixing plate 302 near the inner wall, a filling cavity 304 is opened inside the square rubber ring 303, and a limit frame 304 is fixedly installed on the top of the fixing plate 302 05, a toothed bar 306 is arranged at the top of the limit frame 305, and ten limit rods 307 are arranged at the four sides of the toothed bar 306. Ten limit rods 307 distributed in each horizontal direction form a group, and the bottom ends of the four groups of limit rods 307 are fixedly installed with connecting plates 308, and the bottoms of the four connecting plates 308 are fixedly installed with two pull rods 309. The outer surfaces of the eight pull rods 309 are movably sleeved with springs 310, and the bottom ends of the eight pull rods 309 are fixedly installed with pulling plates 311. The interior of the filling cavity 304 is filled with hydroxyl iron powder particles, and the top of the fixed plate 302 is close to one of them. A tension rod 313 is fixedly installed at each corner, and the outer surface of the tension rod 313 is in contact with the outer surface of the tooth tie strip 306. A through hole 314 is provided on the front surface of the magnetic shield 301, and an entry hole 315 is provided on the front surface of the magnetic shield 301 near the through hole 314. The outer surface of the tooth tie strip 306 is movably embedded in the through hole 314 and the entry hole 315. The bottom ends of the four groups of limit rods 307 are all movably penetrated to the bottom of the fixed plate 302. The top ends of the four groups of limit rods 307 are respectively located on the four side outer surfaces of the square rubber ring 303, and the top ends of the four groups of limit rods 307 are all located at the limit frame 305. Inside, a bottom groove 312 is opened at the bottom of the magnetic isolation cover 301, and the bottom ends of the eight pull rods 309 are movable and penetrate into the bottom groove 312, the bottom of the control panel 2 is in contact with the top of the magnetic isolation cover 301, and the outer surface of the pulling plate 311 is movably embedded in the bottom groove 312, and one end of the eight springs 310 is fixedly installed on the bottom surface inside the magnetic isolation cover 301, and each two springs 310 distributed in the horizontal direction of the eight springs 310 form a group, and the other ends of the four groups of springs 310 are respectively fixedly installed on the bottom of the four connecting plates 308, and the tops of the four connecting plates 308 are in contact with the bottom of the fixed plate 302.

[0023] In this embodiment, when in use, one end of the tooth tie strip 306 is inserted through the insertion hole 315, passed through the tension rod 313, then passed around the four sets of limit rods 307, and passed through the exit hole 314. Figure 7 and Fig. 9As shown, one end of the tooth tie strip 306 is then passed through the fixing ring at the other end thereof to complete the installation of the tooth tie strip 306, and then the fixing assembly 4 is installed in the magnetic shielding cover 301 by means of bolts, and the load monitor body 1 is further installed in the magnetic shielding cover 301 by means of the fixing assembly 4, at which time the gap position at the connection of the shell of the load monitor body 1 is just located at the middle position of the square rubber ring 303, and the shell of the load monitor body 1 is in contact with the inner wall of the square rubber ring 303. When encountering a complex electromagnetic environment, the magnetic shielding cover 301 first shields part of the electromagnetic interference and reduces the magnetic field intensity transmitted to the load monitor body 1 by electromagnetic. The filling cavity 304 is filled with hydroxyl iron powder particles, which have a high magnetic permeability. When the magnetic field of the electromagnetic interference reaches the square rubber ring 303, the hydroxyl iron powder particles will be magnetized under the action of the magnetic field, and the magnetized particles will generate a magnetic field opposite to the external magnetic field. This reverse magnetic field will offset a part of the external magnetic field, thereby reducing the magnetic field interference entering the interior through the gap position at the connection of the shell of the load monitor body 1. At the same time, the iron powder particles will also generate eddy current loss in the changing magnetic field, converting electromagnetic energy into heat energy and consuming it, further reducing the intensity of electromagnetic interference. The square rubber ring 303 uses rubber material as a matrix, which can fix the iron powder particles and has a certain degree of flexibility and sealing, which helps to improve the overall anti-electromagnetic interference performance. The pulling plate 311 is moved downward, driving the pulling rod 309 to move downward and squeezing the spring 310, and at the same time driving the connecting plate 308 and the limiting rod 307 to move downward, so that the limiting rod 307 moves to the inside of the limiting frame 305. At this time, the limiting rod 307 does not contact the tooth tie bar 306. Then, one end of the tooth tie bar 306 is pulled to tighten the tooth tie bar 306, and the tightened tooth tie bar 306 is fixed by the fixing ring of the tooth tie bar 306, so that the square rubber ring 303 is tightly attached to the connection of the load monitor body 1 shell, increasing the tightness of the contact between the load monitor body 1 shell connection and the square rubber ring 303, which is beneficial to improve the effect of anti-electromagnetic interference and reduce the impact on data acquisition accuracy. At the same time, it can also prevent other external factors, such as dust, moisture, etc., from entering the interior of the device through the gap at the shell connection, which is beneficial to improve the reliability and stability of the equipment. With the help of the anti-interference component 3, the problem of the low-voltage electricity inspection load identification device encountering a complex electromagnetic environment during use is solved. Some electromagnetic interference will enter the interior through the connection of the device shell, affecting the normal operation of electronic components and causing deviations in the collected data, thereby affecting the accuracy and reliability of the load data.

[0024] Embodiment 2: Figure 1-Figure 4As shown, the fixing assembly 4 includes a square plate 401, an embedded groove 402 is provided inside the square plate 401, and four support blocks 403 are fixedly installed inside the embedded groove 402. Every two adjacent support blocks 403 of the four support blocks 403 form a group, and a rotating rod 404 is movably embedded between the two groups of support blocks 403. The outer surfaces of the two rotating rods 404 are movably sleeved with gears 405, and the outer surfaces of the two gears 405 are meshed with racks 406. The outer surfaces of one side of the two racks 406 are respectively fixedly installed on the outer surfaces of both sides of the load monitoring instrument body 1, and the outer surfaces of the two gears 405 away from the racks 406 are meshed with two gear rods 407. Every two adjacent gear rods 407 of the four gear rods 407 form a group, and the tops of the two groups of gear rods 407 are fixedly installed with moving plates 408, and the tops of the two moving plates 408 are fixedly installed with two fixed rods 40 9. The tops of the four fixing rods 409 are provided with threaded grooves 410, and the interiors of the four threaded grooves 410 are threadedly embedded with fixing screws 411, and the tops of the four fixing screws 411 are fixedly installed with convex corner fixing blocks 413. The top of the control panel 2 is provided with convex corner fixing holes 5 near the four corners, and the tops of the four fixing rods 409 are movably embedded in the four convex corner fixing holes 5, respectively. The outer surface of the square plate 401 is located inside the magnetic shield 301, and the square plate 401 is connected to the magnetic shield 301 by bolts. The outer surface of the load monitoring instrument body 1 is located inside the square rubber ring 303 and the square plate 401, and two movable grooves 412 are provided on both sides of the interior of the square plate 401. The outer surfaces of the two racks 406 are movably embedded in the four movable grooves 412, respectively, and the bottom ends of the four gear rods 407 are movably penetrated to the bottom of the square plate 401.

[0025] In this embodiment, when in use, the structure of the convex corner fixing block 413 matches the interior of the convex corner fixing hole 5, the load monitor body 1 is placed inside the magnetic shield 301, and then passes through the square plate 401 and the square rubber ring 303 in sequence, and at the same time, the two racks 406 pass through the two movable grooves 412 located at the upper position and mesh with the gears 405 at the corresponding position. As the load monitor body 1 moves downward, the racks 406 are driven to continue to move downward, and then the two gears 405 are driven to rotate, further driving the gear rod 407 meshing with the gear 405 to move upward, pushing the movable plate 408, the fixed rod 409, the fixed screw 411 and the convex corner fixing block 413 to move upward. When the load monitor body 1 falls to the bottom surface inside the magnetic shield 301, the bottom of the control panel 2 contacts the top of the magnetic shield 301, and the fixing rod 409, the fixing screw 411 and the convex corner fixing block 413 pass through the convex corner fixing hole 5. At this time, the top of the fixing rod 409 is flush with the top of the control panel 2, and the convex corner fixing block 413 is located at the top of the convex corner fixing hole 5. Then the convex corner fixing block 413 is rotated to drive the fixing screw 411 to move downward in the thread groove 410, so that the convex corner fixing block 413 and the convex corner fixing hole 5 are staggered and distributed at ninety degrees, thereby installing the load monitor body 1 inside the magnetic shield 301, and then the anti-interference component 3 is used to prevent electromagnetic interference at the gap position at the connection of the shell of the load monitor body 1. When the load monitor body 1 fails and needs to be replaced or repaired, the convex corner fixing block 413 is rotated in the opposite direction to make it flush with the convex corner fixing hole 5, and then the load monitor body 1 is pulled upward to be taken out. At the same time, the upward movement of the rack 406 will drive the gear 405 to rotate in the opposite direction, so that the gear rod 407, the movable plate 408 and the fixed rod 409 move downward to reset. The fixing component 4 is convenient for installing and disassembling the load monitor body 1, and prevents the removed bolts from accidentally rolling and losing when disassembling the load monitor body 1. Unscrewing the connecting bolts at the magnetic shield 301 and the square plate 401 can separate the anti-interference component 3 and the fixing component 4, and facilitate the installation of the tooth tie strip 306. The anti-interference component 3 and the fixing component 4 are configured to be assembled with the load monitor body 1. When a part fails and needs to be replaced, there is no need to replace the entire part, which reduces waste.

[0026] Embodiment 3: Fig.11As shown, a low-voltage electricity inspection load identification system includes: a sensor detection module 6, a data storage module 7, a communication module 8, a data acquisition module 9, a signal processing module 10, a feature extraction module 11, a load identification module 12 and a human-computer interaction interface 13; the sensor detection module 6 is responsible for detecting the current, voltage and other parameters of the low-voltage electricity, the data acquisition module 9 is used to collect various signals detected by the sensor detection module 6, the signal processing module 10 is used to filter, amplify, analog-to-digital conversion and other processing on the original signal collected by the data acquisition module 9, and convert it into a digital signal, the feature extraction module 11 extracts characteristic parameters that can represent the load characteristics from the processed digital signal, the data storage module 7 is responsible for storing the collected data, processing results and other information, the communication module 8 is used to transmit the stored data and processing results in the data storage module 7 to the human-computer interaction interface 13, the human-computer interaction interface 13 is convenient for the inspection personnel to use the operation button, send the operation instruction, and see the collected data and processing results through the display, etc., the load identification module 12 uses the pre-established load model and identification algorithm according to the extracted characteristic parameters to identify and classify the load type and state.

[0027] In this embodiment, when in use, the low-voltage power wire is connected to the wiring terminal on the control panel 2. The sensor detection module 6 includes different types of sensors, such as current sensors, power sensors and voltage sensors. The sensor detection module 6 detects current, voltage and other signals through different sensors. Then, the signals are transmitted to the data acquisition module 9 in the form of electrical signals. The data acquisition module 9 collects the different signals received and converts the high voltage and high current signals into small signals suitable for processing by the monitor. The collected signals are then transmitted to the signal processing module 10 to remove noise interference in the collected signals and improve the signal quality. At the same time, the signals are amplified so that the signal amplitude reaches a suitable range, and the analog signals are converted into digital signals for subsequent digital signal processing. Then, the feature extraction module 11 calculates the parameters that can reflect the load characteristics from the processed digital signal, the load identification module 12 uses the relevant load model and identification algorithm to identify the feature parameters extracted by the feature extraction module 11, the data storage module 7 stores the load identification data, and transmits the load identification data and processing results to the human-computer interaction interface 13 through the communication module 8. The staff can see the load identification data and processing results through the display in the human-computer interaction interface 13, so as to know the load identification situation of the low-voltage power consumption inspection.

[0028] The effect and working principle achieved by the entire mechanism are as follows: one end of the tooth tie bar 306 is inserted through the insertion hole 315, passed through the tensioning rod 313, then wrapped around the four sets of limit rods 307, passed through the exit hole 314, and then passed through the fixing ring at the other end to complete the installation of the tooth tie bar 306, and then the fixing assembly 4 is installed in the magnetic shield 301 through the bolt. The load monitor body 1 is further installed in the magnetic shielding cover 301 through the fixing component 4, the structure of the convex corner fixing block 413 matches the interior of the convex corner fixing hole 5, the load monitor body 1 is placed in the magnetic shielding cover 301, and then passes through the square plate 401 and the square rubber ring 303 in sequence, so that the rack 406 is engaged with the gear 405 at the corresponding position, and as the load monitor body 1 moves downward, the rack 406 is driven to continue to move downward, and then the two gears 405 are driven to rotate, and the gear rod 407 engaged with the gear 405 is further driven to move upward, pushing the movable plate 408, the fixing rod 409, the fixing screw 411 and the convex corner fixing block 413 to move upward. When the load monitor body 1 falls to the bottom surface inside the magnetic shield 301, the fixing rod 409 passes through the convex corner fixing hole 5 and is flush with the top of the control panel 2, and the convex corner fixing block 413 is located at the top of the convex corner fixing hole 5. Then the convex corner fixing block 413 is rotated to drive the fixing screw 411 to move downward in the thread groove 410, so that the convex corner fixing block 413 and the convex corner fixing hole 5 are staggered and distributed at ninety degrees, thereby installing the load monitor body 1 inside the magnetic shield 301. At this time, the gap position at the connection of the shell of the load monitor body 1 is just located in the middle position of the square rubber ring 303, and the shell of the load monitor body 1 is in contact with the inner wall of the square rubber ring 303. The magnetic shield 301 first shields part of the electromagnetic interference and reduces the magnetic field strength of the electromagnetic transmission. The filling cavity 304 is filled with hydroxyl iron powder particles, which have a high magnetic permeability and offset a part of the external magnetic field, thereby reducing the magnetic field interference entering the interior through the gap position at the connection of the shell of the load monitor body 1. The square rubber ring 303 uses rubber material as a matrix, can fix iron powder particles, and has a certain degree of flexibility and sealing, which helps to improve the overall anti-electromagnetic interference performance. Move the pull plate 311 downward, drive the pull rod 309 to move downward, and squeeze the spring 310, while driving the connecting plate 308 and the limit rod 307 to move downward, and then pull one end of the tooth tie strip 306 to tighten the tooth tie strip 306, and fix the tightened tooth tie strip 306 through the fixing ring of the tooth tie strip 306, so that the square rubber ring 303 is tightly attached to the connection of the load monitor body 1 shell, and the tightness of the contact between the connection of the load monitor body 1 shell and the square rubber ring 303 is increased. When the load monitor body 1 fails and needs to be replaced or repaired, the convex angle fixing block 413 is rotated in the opposite direction to make it flush with the convex angle fixing hole 5, and then the load monitor body 1 is pulled upward to remove it.The fixing assembly 4 facilitates the installation and removal of the load monitor body 1, and prevents the removed bolts from rolling and being lost accidentally when the load monitor body 1 is removed. The anti-interference assembly 3 and the fixing assembly 4 can be separated by unscrewing the connecting bolts at the magnetic shield 301 and the square plate 401, so as to facilitate the installation of the tooth tie strip 306. The anti-interference assembly 3 and the fixing assembly 4 are arranged to be assembled with the load monitor body 1 and can be replaced separately.

[0029] Among them, the load monitoring instrument body 1 and the control panel 2 are both existing technologies, and their components and operating principles are public technologies, which will not be explained in detail here.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-voltage power inspection load identification device, comprising a load monitoring instrument body (1), characterized in that: A control panel (2) is arranged on the top of the load monitoring instrument body (1), an anti-interference component (3) is arranged on the outer surface of the load monitoring instrument body (1), and a fixing component (4) is arranged inside the anti-interference component (3); The anti-interference component (3) comprises a magnetic shield (301), a fixing plate (302) is fixedly mounted on the inner wall of the magnetic shield (301), a square rubber ring (303) is fixedly connected to the top of the fixing plate (302) near the inner wall, a filling cavity (304) is provided inside the square rubber ring (303), a limit frame (305) is fixedly mounted on the top of the fixing plate (302), a toothed tie strip (306) is arranged on the top of the limit frame (305), and the toothed tie strip (306) Ten limit rods (307) are arranged at the four sides of the interior, and each group of ten limit rods (307) distributed in the horizontal direction of the plurality of limit rods (307) is formed into a group. The bottom ends of the four groups of limit rods (307) are fixedly installed with connecting plates (308), the bottoms of the four connecting plates (308) are fixedly installed with two pull rods (309), the outer surfaces of the eight pull rods (309) are movably sleeved with springs (310), and the bottom ends of the eight pull rods (309) are fixedly installed with pulling plates (311).

2. The low-voltage electricity inspection load identification device according to claim 1 is characterized in that: The interior of the filling cavity (304) is filled with hydroxyl iron powder particles, a tension rod (313) is fixedly installed on the top of the fixed plate (302) near one of the corners, the outer surface of the tension rod (313) is in contact with the outer surface of the tooth tie bar (306), the front surface of the magnetic shield (301) is provided with a through hole (314), the front surface of the magnetic shield (301) is provided with a penetration hole (315) near the through hole (314), and the outer surface of the tooth tie bar (306) is movably embedded in the through hole (314) and the penetration hole (315).

3. The low-voltage electricity inspection load identification device according to claim 2 is characterized in that: The bottom ends of the four groups of limit rods (307) are all movable and penetrate to the bottom of the fixed plate (302), the top ends of the four groups of limit rods (307) are respectively located on the four side outer surfaces of the square rubber ring (303), the top ends of the four groups of limit rods (307) are all located inside the limit frame (305), the bottom of the magnetic shield (301) is provided with a bottom groove (312), and the bottom ends of the eight pull rods (309) are all movable and penetrate to the inside of the bottom groove (312).

4. The low-voltage electricity inspection load identification device according to claim 3 is characterized in that: The bottom of the control panel (2) is in contact with the top of the magnetic shield (301), the outer surface of the pulling plate (311) is movably embedded in the bottom groove (312), one end of the eight springs (310) is fixedly mounted on the bottom surface of the magnetic shield (301), and two springs (310) distributed in each horizontal direction of the eight springs (310) form a group. The other ends of the four groups of springs (310) are respectively fixedly mounted on the bottom of four connecting plates (308), and the tops of the four connecting plates (308) are in contact with the bottom of the fixed plate (302).

5. The low-voltage electricity inspection load identification device according to claim 4 is characterized in that: The fixing assembly (4) comprises a square plate (401), an inner groove (402) is provided inside the square plate (401), four support blocks (403) are fixedly installed inside the inner groove (402), each two adjacent support blocks (403) of the four support blocks (403) form a group, a rotating rod (404) is movably embedded between two groups of the support blocks (403), and gears (405) are movably sleeved on the outer surfaces of the two rotating rods (404).

6. The low-voltage electricity inspection load identification device according to claim 5 is characterized in that: The outer surfaces of the two gears (405) are meshedly connected with racks (406), one side outer surfaces of the two racks (406) are respectively fixedly mounted on the outer surfaces of both sides of the load monitoring instrument body (1), and the outer surfaces of the two gears (405) away from the racks (406) are meshedly connected with two gear rods (407), and each two adjacent gear rods (407) of the four gear rods (407) form a group, and moving plates (408) are fixedly mounted on the top ends of the two groups of gear rods (407).

7. The low-voltage electricity inspection load identification device according to claim 6 is characterized in that: Two fixing rods (409) are fixedly mounted on the tops of the two movable plates (408); the tops of the four fixing rods (409) are provided with threaded grooves (410); the interiors of the four threaded grooves (410) are threadedly embedded with fixing screws (411); the tops of the four fixing screws (411) are fixedly mounted with convex corner fixing blocks (413); the tops of the control panel (2) are provided with convex corner fixing holes (5) near the four corners; the tops of the four fixing rods (409) are movably embedded in the interiors of the four convex corner fixing holes (5), respectively.

8. The low-voltage electricity inspection load identification device according to claim 7 is characterized in that: The outer surface of the square plate (401) is located inside the magnetic shield (301), and the square plate (401) and the magnetic shield (301) are connected by bolts. The outer surface of the load monitor body (1) is located inside the square rubber ring (303) and the square plate (401). Two movable grooves (412) are provided on both sides of the inside of the square plate (401), and the outer surfaces of the two racks (406) are movably embedded in the inside of the four movable grooves (412), respectively, and the bottom ends of the four gear rods (407) are movably penetrated to the bottom of the square plate (401).

9. The low-voltage electricity inspection load identification device according to claim 8 is characterized in that: Also included is a low-voltage electricity inspection load identification system, comprising: a sensor detection module (6), a data storage module (7), a communication module (8), a data acquisition module (9), a signal processing module (10), a feature extraction module (11), a load identification module (12) and a human-computer interaction interface (13); The sensor detection module (6) is responsible for detecting parameters such as current and voltage of low-voltage electricity; the data acquisition module (9) is used to acquire various signals detected by the sensor detection module (6); the signal processing module (10) is used to filter, amplify, perform analog-to-digital conversion, etc. on the original signal acquired by the data acquisition module (9) to convert it into a digital signal; the feature extraction module (11) extracts feature parameters that can represent load characteristics from the processed digital signal; the data storage module (7) is responsible for storing information such as acquired data and processing results; the communication module (8) is used to transmit the stored data and processing results in the data storage module (7) to the human-computer interaction interface (13); the human-computer interaction interface (13) facilitates the detection personnel to use the operation buttons, send operation instructions, and see the acquired data and processing results through the display.

10. The low-voltage electricity inspection load identification device according to claim 9 is characterized in that: The load identification module (12) identifies and classifies the load type and state based on the extracted characteristic parameters using a pre-established load model and identification algorithm. The relevant calculation formula is as follows: ； Where T represents the entire training data set, A represents the feature to be divided, V represents the set of all possible values ​​of the feature, Tv represents the subset of feature A in the training data set T, Ent(T) represents the empirical entropy of the data set T, which is used to measure the degree of confusion of the data set, and Ent(Tv) represents the empirical entropy of the subset Tv.

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