A high voltage cable for smart grid

Abstract

This invention relates to a high-voltage cable for smart grids, applied in the field of cable technology. It includes a cable body and a heat monitoring mechanism. The heat monitoring mechanism comprises a monitoring cable segment cut from the cable body, a sealed monitoring cylinder positioned between the cable body and the monitoring cable segment, and a movable monitoring plate slidably and sealed to the sealed monitoring cylinder. An upper heat-conducting rod and a lower heat-conducting rod are respectively embedded at both ends of the sealed monitoring cylinder. A distance sensor is fixedly installed inside the sealed monitoring cylinder. The heat monitoring mechanism also includes a monitoring and analysis system. The heat monitoring mechanism can directly monitor the heat generation of the conductor in real time and automatically issue an alarm when abnormal heat generation is detected. Compared to the traditional method of monitoring cable temperature using temperature sensors, it effectively eliminates the interference and influence of environmental factors on monitoring, greatly improving the accuracy and reliability of monitoring, and thus significantly enhancing the safety of the high-voltage cable.

Description

Technical Field

[0001] This invention relates to a high-voltage cable, and more particularly to a high-voltage cable for smart grids applied in the field of cable technology. Background Technology

[0002] A smart grid is a new type of modern power grid that combines advanced sensing and measurement technologies, information and communication technologies, analysis and decision-making technologies, automatic control technologies, and energy and power technologies with the power grid infrastructure. With the rapid development of smart grids, high-voltage cables, as the core carrier of power transmission, directly affect the operating efficiency of the power grid due to their reliability, safety, and level of intelligence.

[0003] Cables generate heat during operation. Joule heating caused by conductor resistance is the core reason for cable heating, especially for high-voltage cables. Since high-voltage cables usually carry higher current and voltage, they generate more heat. When a cable fails, it may cause abnormal heat generation in the conductor, which in turn leads to an abnormal rise in cable temperature. In order to ensure the safety of the cable, it is necessary to monitor the cable accordingly.

[0004] In existing technologies, temperature sensors are typically used to monitor cable temperature. Examples include the full-thread temperature monitoring cable disclosed in patent application CN108933002A and the smart cable disclosed in patent application CN109300605A. However, cable temperature is also affected by environmental factors. Monitoring with temperature sensors is inevitably susceptible to inaccurate results due to these environmental influences, making it difficult to accurately and reliably detect any abnormalities in the heat generated by the conductors within the cable. Therefore, we propose a high-voltage cable for smart grids. Summary of the Invention

[0005] The technical problem that this invention aims to solve in view of the above-mentioned prior art is that: when monitoring cable temperature by temperature sensors, the monitoring results are inevitably affected by environmental factors, making it difficult to accurately and reliably monitor whether there is any abnormality in the heat generation of the conductor in the cable.

[0006] To address the aforementioned problems, this invention provides a high-voltage cable for smart grids, comprising a cable body and a heat monitoring mechanism. The cable body includes, from the inside out, a conductor, an inner shielding layer, an insulation layer, an outer shielding layer, and a sheath layer. The heat monitoring mechanism includes a monitoring cable segment cut from the cable body, which is arranged parallel to the cable body. The heat monitoring mechanism also includes a sealed monitoring cylinder disposed between the cable body and the monitoring cable segment. A movable monitoring plate is slidably and sealedly connected to the sealed monitoring cylinder. An upper heat-conducting rod and a lower heat-conducting rod matching the upper heat-conducting rod are respectively embedded at both ends of the sealed monitoring cylinder. The sealed monitoring cylinder and the movable monitoring plate are made of heat-insulating material, and the upper and lower heat-conducting rods are made of insulating and heat-conducting material. The end of the upper heat-conducting rod away from the sealed monitoring cylinder abuts against the conductor in the monitoring cable segment, and the end of the lower heat-conducting rod away from the sealed monitoring cylinder abuts against the conductor in the cable body. A distance sensor perpendicular to the movable monitoring plate is fixedly installed inside the sealed monitoring cylinder.

[0007] The fever monitoring agency also includes a monitoring and analysis system, which includes a monitoring setting module, an analysis and judgment module, and an anomaly alarm module. The monitoring setting module and the distance sensor are both connected to the analysis and judgment module, and the analysis and judgment module is connected to the anomaly alarm module.

[0008] In the aforementioned high-voltage cables for smart grids, the heat generation of the conductor can be monitored in real time directly, while effectively eliminating interference from environmental factors, and an alarm can be triggered when abnormal heat generation of the conductor is detected.

[0009] As a further improvement of this application, the upper heat-conducting rod penetrates the sheath layer, outer shielding layer, insulation layer, and inner shielding layer in the monitoring cable section, and the lower heat-conducting rod penetrates the sheath layer, outer shielding layer, insulation layer, and inner shielding layer in the cable body. The distance sensor is located on the side of the active monitoring plate near the lower heat-conducting rod.

[0010] As a further improvement of this application, an upper heat insulation sleeve is fixedly fitted on the outer wall of the upper heat conduction rod. The two ends of the upper heat insulation sleeve are respectively sealed and fixedly connected to the monitoring cable section and the sealed monitoring cylinder. A lower heat insulation sleeve is fitted on the outer wall of the lower heat conduction rod. The two ends of the lower heat insulation sleeve are respectively sealed and fixedly connected to the cable body and the sealed monitoring cylinder. Both the upper heat insulation sleeve and the lower heat insulation sleeve are made of heat insulation material.

[0011] As a further improvement of this application, both ends of the monitoring cable section are fixedly connected with matching end-sealing blocks, which are made of heat-insulating material.

[0012] As another improvement of this application, an electric telescopic rod and a temperature sensor are also fixedly installed inside the sealed monitoring cylinder. The temperature sensor is located on the side of the movable monitoring plate near the lower heat-conducting rod, and the electric telescopic rod is located on the side of the movable monitoring plate near the upper heat-conducting rod. The output end of the electric telescopic rod abuts against the movable monitoring plate.

[0013] As a supplement to another improvement of this application, the monitoring and analysis system also includes a slip-prevention control module. The monitoring setting module and the temperature sensor are both connected to the slip-prevention control module, which is connected to the electric telescopic pole.

[0014] As another improvement of this application, two air pressure sensors are also fixedly installed inside the sealing monitoring cylinder. The two air pressure sensors are located on both sides of the moving monitoring plate, and the monitoring and analysis system also includes a sealing detection module.

[0015] As a further improvement to this application, the monitoring setting module, the air pressure sensor, and the temperature sensor are all connected to the sealing detection module via signal connection, and the sealing detection module is also connected to the electric telescopic rod and the abnormal alarm module via signal connection.

[0016] As a further improvement to this application, a safety switch is also fixedly installed inside the sealed monitoring cylinder. The safety switch is located on the side of the active monitoring plate near the upper heat conduction rod, and the safety switch is connected to the analysis and judgment module signal.

[0017] In summary, the heat monitoring mechanism in this application can directly monitor the heat generation of the conductor in real time and automatically alarm when abnormal heat generation is detected. Compared with the traditional method of monitoring cable temperature using temperature sensors, it can effectively eliminate the interference and influence of environmental factors on monitoring, greatly improving the accuracy and reliability of monitoring, and thus greatly improving the safety of high-voltage cables. Through the combined setting of electric telescopic rod, temperature sensor, anti-slip control module, etc., the sliding of the movable monitoring plate can be effectively suppressed while ensuring monitoring reliability, reducing unnecessary frequent sliding, thereby effectively reducing the wear of the movable monitoring plate and preventing the monitoring from being affected by severe wear of the movable monitoring plate, further improving the accuracy and reliability of monitoring. Through the combined setting of air pressure sensor, sealing detection module, etc., the sealing performance of the connection between the movable monitoring plate and the sealing monitoring cylinder can be periodically and automatically detected, and an alarm can be issued when a sealing problem is detected, thereby improving the reliability of the heat monitoring mechanism, and further improving the accuracy and reliability of monitoring. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the first embodiment of this application;

[0019] Figure 2 This is a cross-sectional view of the sealing monitoring cylinder in the first embodiment of this application;

[0020] Figure 3 This is a side cross-sectional structural diagram of the monitoring cable section in the first embodiment of this application;

[0021] Figure 4 This is a structural block diagram of the monitoring and analysis system in the first embodiment of this application;

[0022] Figure 5 This is a cross-sectional view of the sealing monitoring cylinder in the second embodiment of this application;

[0023] Figure 6 This is a structural block diagram of the monitoring and analysis system according to the second embodiment of this application;

[0024] Figure 7 This is a cross-sectional view of the sealing monitoring cylinder in the third embodiment of this application;

[0025] Figure 8 This is a structural block diagram of the monitoring and analysis system in the third embodiment of this application.

[0026] Explanation of the labels in the diagram:

[0027] 001. Cable body; 002. Cable section for comparison; 301. Sealed monitoring cylinder; 302. Movable monitoring plate; 303. Upper heat-conducting rod; 304. Lower heat-conducting rod; 305. Distance sensor; 306. Upper heat insulation sleeve; 307. Lower heat insulation sleeve; 308. End sealing block; 309. Electric telescopic rod; 310. Temperature sensor; 311. Air pressure sensor; 312. Safety switch. Detailed Implementation

[0028] The three embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0029] First implementation method:

[0030] Figures 1-4This invention discloses a high-voltage cable for smart grids, comprising a cable body 001 and a heat monitoring mechanism. The cable body 001 includes, from the inside out, a conductor, an inner shielding layer, an insulation layer, an outer shielding layer, and a sheath layer. The heat monitoring mechanism includes a monitoring cable segment 002 cut from the cable body 001, which is arranged parallel to the cable body 001. The heat monitoring mechanism also includes a sealed monitoring cylinder 301 disposed between the cable body 001 and the monitoring cable segment 002. A movable monitoring plate 302 is slidably and sealedly connected to the sealed monitoring cylinder 301. An upper heat-conducting rod 303 and a lower heat-conducting rod 304 matching the upper heat-conducting rod 303 are respectively embedded at both ends of the sealed monitoring cylinder 301. The plate 302 is made of heat-insulating material, and the upper heat-conducting rod 303 and the lower heat-conducting rod 304 are made of insulating heat-conducting material. The end of the upper heat-conducting rod 303 away from the sealed monitoring cylinder 301 abuts against the conductor in the monitoring cable section 002, and the end of the lower heat-conducting rod 304 away from the sealed monitoring cylinder 301 abuts against the conductor in the cable body 001. A distance sensor 305 perpendicular to the movable monitoring plate 302 is fixedly installed inside the sealed monitoring cylinder 301. The upper heat-conducting rod 303 penetrates the sheath layer, outer shielding layer, insulation layer and inner shielding layer in the monitoring cable section 002, and the lower heat-conducting rod 304 penetrates the sheath layer, outer shielding layer, insulation layer and inner shielding layer in the cable body 001. The distance sensor 305 is located on the side of the movable monitoring plate 302 close to the lower heat-conducting rod 304.

[0031] The fever monitoring agency also includes a monitoring and analysis system, which includes a monitoring setting module, an analysis and judgment module, and an abnormal alarm module. The monitoring setting module and the distance sensor 305 are both connected to the analysis and judgment module, and the analysis and judgment module is connected to the abnormal alarm module.

[0032] For ease of description, we designate the area of ​​the movable monitoring plate 302 inside the sealed monitoring cylinder 301 near the upper heat-conducting rod 303 as area A, and the area of ​​the movable monitoring plate 302 near the lower heat-conducting rod 304 as area B. We designate the conductor in the cable section 002 as 'a', and the conductor in the cable body 001 as 'b'. Area A can be thermally connected to 'a' via the upper heat-conducting rod 303, allowing the temperature of area A to be synchronized with the temperature of 'a'. Therefore, the temperature of area A corresponds to the temperature of 'a'. Similarly, area B can be thermally connected to 'b' via the lower heat-conducting rod 304, so the temperature of area B corresponds to the temperature of 'a'. Since the monitoring cable segment 002 is cut from the cable body 001 and the monitoring cable segment 002 is in the same environment as the cable body 001, the temperature of a and b is affected by the same environmental factors. The difference is that the cable body 001 is used to transmit electrical energy, while the monitoring cable segment 002 does not transmit electrical energy. Therefore, b will generate heat, causing the temperature of b to be higher than the temperature of a. This makes the temperature of area B higher than the temperature of area A. The greater the heat generated by b, the greater the temperature difference between area B and area A. Therefore, the temperature difference between area B and area A corresponds to the heat generated by b.

[0033] Based on actual conditions, a reasonable distance threshold is set through the monitoring setting module. If the temperature in zone B is higher than that in zone A, the air pressure in zone B will be higher than that in zone A. The greater the temperature difference between zones B and A, the greater the pressure difference between them. Under the influence of this pressure difference, the active monitoring plate 302 will move closer to the upper heat-conducting rod 303. The greater the pressure difference, the farther the active monitoring plate 302 will move. The distance sensor 305 will monitor the distance between itself and the active monitoring plate 302 in real time, and the data monitored by the distance sensor 305 will be transmitted to the analysis and judgment module in real time. The analysis and judgment module is used to... The distance sensor 305 monitors the distance data and the distance threshold to determine whether the heat generation of b is abnormal. The greater the heat generation of b, the greater the distance between the activity monitoring board 302 and the distance sensor 305. When the heat generation of b is normal, the distance between the distance sensor 305 and the activity monitoring board 302 should be less than the distance threshold. Once the distance between the distance sensor 305 and the activity monitoring board 302 exceeds the distance threshold, it indicates that the heat generation of b is abnormal. Therefore, the analysis and judgment module can determine whether the heat generation of b is abnormal based on the distance data and the distance threshold monitored by the distance sensor 305.

[0034] When the distance data detected by the distance sensor 305 exceeds the distance threshold, it indicates that the heat generation of cable b is abnormal. At this time, the analysis and judgment module will control the abnormal alarm module to alert relevant personnel (alarms are existing technology and will not be elaborated here), prompting relevant personnel to perform corresponding maintenance on the cable in a timely manner. Therefore, by setting up the heat monitoring mechanism, the heat monitoring mechanism in this application can directly monitor the heat generation of the conductor in real time and can automatically alarm when abnormal heat generation of the conductor is detected. Compared with the traditional method of using temperature sensors to monitor cable temperature, it can effectively eliminate the interference and influence of environmental factors on monitoring, greatly improve the accuracy and reliability of monitoring, and thus greatly improve the safety of high-voltage cables.

[0035] An upper heat-conducting rod 303 is fixedly fitted with an upper heat-insulating sleeve 306 on its outer wall. The two ends of the upper heat-insulating sleeve 306 are respectively sealed and fixedly connected to the cable body section 002 and the sealed monitoring cylinder 301. A lower heat-insulating sleeve 307 is fitted on the outer wall of the lower heat-conducting rod 304. The two ends of the lower heat-insulating sleeve 307 are respectively sealed and fixedly connected to the cable body 001 and the sealed monitoring cylinder 301. Both the upper heat-insulating sleeve 306 and the lower heat-insulating sleeve 307 are made of heat-insulating material, which is conducive to heat transfer and improves temperature synchronization.

[0036] Both ends of the monitoring cable segment 002 are fixedly connected with matching end caps 308. The end caps 308 are made of heat insulation material to prevent the conductor in the monitoring cable segment 002 from directly contacting the environment, thereby improving the effectiveness of the comparison and reference function played by the monitoring cable segment 002 during the monitoring process.

[0037] Second implementation method:

[0038] Please see Figure 5 and Figure 6 Unlike the first embodiment, the sealed monitoring cylinder 301 also has an electric telescopic rod 309 and a temperature sensor 310 fixedly installed inside. The temperature sensor 310 is located on the side of the movable monitoring plate 302 near the lower heat-conducting rod 304, and the electric telescopic rod 309 is located on the side of the movable monitoring plate 302 near the upper heat-conducting rod 303. The output end of the electric telescopic rod 309 abuts against the movable monitoring plate 302. The monitoring and analysis system also includes a slip-prevention control module. The monitoring setting module and the temperature sensor 310 are both signal-connected to the slip-prevention control module, and the slip-prevention control module is signal-connected to the electric telescopic rod 309.

[0039] In practical applications, the temperatures of zones a and b inevitably fluctuate, leading to frequent changes in the air pressure difference between zones A and B. This, in turn, causes the active monitoring plate 302 to slide frequently, increasing its wear. To reduce wear, this embodiment specifically includes an electric telescopic rod 309, a temperature sensor 310, and an anti-slip control module. A temperature threshold is set reasonably through the monitoring setting module based on actual conditions. The temperature sensor 310 monitors the temperature of zone B in real time, and the temperature data monitored by the sensor 310 is transmitted to the anti-slip control module in real time. Under normal circumstances, when the temperature of zone B is not higher than the temperature threshold, the output end of the electric telescopic rod 309 is against the active monitoring plate 302, thereby suppressing its sliding and effectively reducing wear. At this time, the temperatures of areas b and B are relatively low and within a safe range, so they will not affect the reliability of monitoring. When the temperature of area B exceeds the temperature threshold, the anti-slip control module will control the electric telescopic rod 309 to retract, so that the output end of the electric telescopic rod 309 moves away from the movable monitoring plate 302, no longer restricting the sliding of the movable monitoring plate 302. Moreover, when the heat generation of b is abnormal, the temperature of area B will rise rapidly to exceed the temperature threshold, thus effectively ensuring the reliability of monitoring. Therefore, through the combined setting of the electric telescopic rod 309, temperature sensor 310, anti-slip control module, etc., the sliding of the movable monitoring plate 302 can be effectively suppressed while ensuring the reliability of monitoring, reducing its unnecessary frequent sliding, thereby effectively reducing the wear of the movable monitoring plate 302 and preventing the monitoring from being affected by severe wear of the movable monitoring plate 302, further improving the accuracy and reliability of monitoring.

[0040] The third implementation method:

[0041] Please see Figure 7 and Figure 8 Unlike the second implementation, two pressure sensors 311 are also fixedly installed inside the sealing monitoring cylinder 301. The two pressure sensors 311 are located on both sides of the movable monitoring plate 302. The monitoring and analysis system also includes a sealing detection module. The monitoring setting module, pressure sensors 311, and temperature sensors 310 are all connected to the sealing detection module. The sealing detection module is also connected to the electric telescopic rod 309 and the abnormal alarm module.

[0042] The temperature data monitored by temperature sensor 310 is also transmitted to the sealing detection module. A self-test cycle is set via the monitoring setting module. Based on this cycle, and provided the temperature in zone B is below the temperature threshold, the sealing detection module periodically checks the sealing performance at the connection between the active monitoring plate 302 and the sealing monitoring cylinder 301. During the test, the sealing detection module controls the extension of the electric telescopic rod 309, pushing the active monitoring plate 302 a certain distance closer to the lower heat-conducting rod 304. Then, the sealing detection module activates the pressure sensors 311. The two pressure sensors 311 monitor the pressure in zones A and B respectively, and the pressure readings of the two sensors 311 are... All data is transmitted in real time to the sealing detection module, which analyzes the air pressure data to determine whether there is a problem with the sealing at the connection between the movable monitoring plate 302 and the sealing monitoring cylinder 301. When the electric telescopic rod 309 pushes the movable monitoring plate 302 to move, the air pressure in area A will decrease and the air pressure in area B will increase. If there is a problem with the sealing at the connection between the movable monitoring plate 302 and the sealing monitoring cylinder 301, the air pressure data monitored by the air pressure sensor 311 in area B will gradually decrease, while the air pressure data monitored by the air pressure sensor 311 in area A will gradually increase. Therefore, the sealing detection module can determine whether there is a problem with the sealing at the connection between the movable monitoring plate 302 and the sealing monitoring cylinder 301 by analyzing the air pressure data.

[0043] When the judgment result indicates a sealing problem, the sealing detection module will control the abnormal alarm module to alert relevant personnel, prompting them to perform timely maintenance on the heat monitoring mechanism. After the test is completed, the sealing detection module will shut down the pressure sensor 311 and control the electric telescopic rod 309 to retract and reset. Therefore, through the combined setup of the pressure sensor 311, the sealing detection module, etc., the sealing performance at the connection between the movable monitoring plate 302 and the sealing monitoring cylinder 301 can be periodically and automatically detected, and an alarm can be issued when a sealing problem is detected, thereby improving the reliability of the heat monitoring mechanism and further enhancing the accuracy and reliability of monitoring.

[0044] A safety switch 312 is also fixedly installed inside the sealed monitoring cylinder 301. The safety switch 312 is located on the side of the active monitoring plate 302 near the upper heat conduction rod 303, and the safety switch 312 is connected to the analysis and judgment module. When the heat generation of b is abnormal, it will not only cause the distance between the distance sensor 305 and the active monitoring plate 302 to exceed the distance threshold, but also cause the active monitoring plate 302 to trigger the safety switch 312. After the safety switch 312 is triggered, it will send a signal to the analysis and judgment module. Therefore, even if the distance sensor 305 fails and fails to accurately detect that the distance between it and the active monitoring plate 302 has exceeded the distance threshold, the analysis and judgment module will control the abnormal alarm module to issue an alarm, further improving the reliability of monitoring.

[0045] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A high-voltage cable for smart grids, comprising a cable body (001), wherein the cable body (001) comprises, from the inside out, a conductor, an inner shielding layer, an insulation layer, an outer shielding layer, and a sheathing layer, characterized in that, It also includes a heat monitoring mechanism, which includes a monitoring cable segment (002) cut from the cable body (001), the monitoring cable segment (002) being arranged parallel to the cable body (001), and a sealed monitoring cylinder (301) disposed between the cable body (001) and the monitoring cable segment (002). The sealed monitoring cylinder (301) contains a movable monitoring plate (302) that is slidably and sealed to it. An upper heat-conducting rod (303) and a lower heat-conducting plate (303) matching the upper heat-conducting rod (303) are respectively embedded at both ends of the sealed monitoring cylinder (301). The heat-conducting rod (304), the sealed monitoring cylinder (301), and the movable monitoring plate (302) are made of heat-insulating material. The upper heat-conducting rod (303) and the lower heat-conducting rod (304) are made of insulating heat-conducting material. The end of the upper heat-conducting rod (303) away from the sealed monitoring cylinder (301) abuts against the conductor in the cable body section (002). The end of the lower heat-conducting rod (304) away from the sealed monitoring cylinder (301) abuts against the conductor in the cable body (001). A distance sensor (305) perpendicular to the movable monitoring plate (302) is fixedly installed inside the sealed monitoring cylinder (301). The fever monitoring mechanism also includes a monitoring and analysis system, which includes a monitoring setting module, an analysis and judgment module, and an abnormal alarm module. The monitoring setting module and the distance sensor (305) are both connected to the analysis and judgment module, and the analysis and judgment module is connected to the abnormal alarm module. The upper heat-conducting rod (303) penetrates the sheath layer, outer shielding layer, insulation layer, and inner shielding layer in the monitoring cable section (002), and the lower heat-conducting rod (304) penetrates the sheath layer, outer shielding layer, insulation layer, and inner shielding layer in the cable body (001). The distance sensor (305) is located on the side of the movable monitoring plate (302) near the lower heat-conducting rod (304). An upper heat-insulating sleeve (306) is fixedly sleeved on the outer wall of the upper heat-conducting rod (303), and the two ends of the upper heat-insulating sleeve (306) are respectively connected to the monitoring cable section (002). 02) The sealing monitoring cylinder (301) is sealed and fixedly connected. The lower heat-conducting rod (304) is fitted with a lower heat insulation sleeve (307) on its outer wall. The two ends of the lower heat insulation sleeve (307) are sealed and fixedly connected to the cable body (001) and the sealing monitoring cylinder (301) respectively. The upper heat insulation sleeve (306) and the lower heat insulation sleeve (307) are both made of heat insulation material. The two ends of the monitoring cable section (002) are fixedly connected with matching end-sealing blocks (308). The end-sealing blocks (308) are made of heat insulation material.

2. A high voltage cable for smart grid according to claim 1, characterized in that An electric telescopic rod (309) and a temperature sensor (310) are also fixedly installed inside the sealed monitoring cylinder (301). The temperature sensor (310) is located on the side of the movable monitoring plate (302) near the lower heat-conducting rod (304), and the electric telescopic rod (309) is located on the side of the movable monitoring plate (302) near the upper heat-conducting rod (303). The output end of the electric telescopic rod (309) abuts against the movable monitoring plate (302).

3. A high-voltage cable for smart grids according to claim 2, characterized in that, The monitoring and analysis system also includes a slip control module. The monitoring setting module and the temperature sensor (310) are both connected to the slip control module. The slip control module is connected to the electric telescopic rod (309).

4. A high voltage cable for a smart grid according to claim 3, c h a r a c t e r i s e d in that Two pressure sensors (311) are also fixedly installed inside the sealing monitoring cylinder (301). The two pressure sensors (311) are located on both sides of the movable monitoring plate (302). The monitoring and analysis system also includes a sealing detection module.

5. A high-voltage cable for smart grids according to claim 4, characterized in that, The monitoring setting module, the air pressure sensor (311), and the temperature sensor (310) are all connected to the sealing detection module. The sealing detection module is also connected to the electric telescopic rod (309) and the abnormal alarm module.

6. A high voltage cable for a smart grid according to claim 5, c h a r a c t e r i s e d in that A safety switch (312) is also fixedly installed inside the sealed monitoring cylinder (301). The safety switch (312) is located on the side of the active monitoring plate (302) near the upper heat conduction rod (303), and the safety switch (312) is connected to the analysis and judgment module.

Images