A composite low voltage power cable

Abstract

This invention discloses a composite low-voltage power cable for use in the field of low-voltage power cables. The invention uses a core bundle as its core, with a flame-retardant insulation layer, a support frame, an outer insulation layer, and an outer sheath sequentially arranged on the outside. Reinforcing wire bundles are threaded between the support frames, integrating monitoring elements such as temperature and pressure sensors and humidity sensors, enabling real-time acquisition of internal operating parameters such as temperature, pressure, and humidity. Simultaneously, the cable is equipped with an auxiliary protection system encompassing modules for monitoring, data processing, wireless transmission, alarm location, remote early warning, and maintenance assistance. This system enables real-time data analysis, transmission, and early warning. Through the coordinated design of the support frame and reinforcing wire bundles, the tensile strength and structural stability of the cable are improved, while real-time monitoring of its operating status is achieved. The auxiliary protection reduces maintenance costs, extends the cable's service life, and meets the integration, efficiency, and safety requirements of modern low-voltage power distribution systems.

Description

Technical Field

[0001] This invention relates to the field of low-voltage power cables, and particularly to a composite low-voltage power cable. Background Technology

[0002] Existing composite low-voltage power cables are mainly used in low-voltage power distribution scenarios such as building power distribution, new energy grid connection, and industrial automation, aiming to solve the problems of limited laying space, low installation efficiency, and insufficient functional integration of traditional single-function cables. With the development of smart grids, smart homes, and green buildings, higher requirements are placed on cables, such as multi-functional integration, safety and environmental protection, and convenient laying. Traditional low-voltage cables are mostly independent power transmission structures, requiring additional laying of communication lines, sensor lines, etc., resulting in dense pipelines and high maintenance costs; moreover, some scenarios have stringent requirements for flame retardancy, weather resistance, and corrosion resistance, which are difficult to achieve with a single material.

[0003] Chinese invention CN121355019B discloses a composite low-voltage power cable, including a shell and copper bars; five sets of isolation sleeves are fixed together by connecting blocks to ensure a stable connection between the isolation sleeves and the copper bars. The combination of support columns, spiral blades and isolation sleeves improves the mechanical stability of the cable, enabling it to withstand greater external impacts or tensile forces and ensuring stable operation of the cable under high load conditions; however, this invention still has problems such as the lack of intelligent monitoring capabilities.

[0004] Chinese invention CN119626653B discloses a composite low-voltage branch cable, including a branching area, a conductor support mechanism, connecting wires, an insulating sheath, and a mating clamping mechanism. The branching area is opened on the composite cable, and the conductor support mechanism is fixedly set in the branching area. The connecting wires correspond one-to-one with the conductors. This invention solves the problem that existing composite low-voltage cables use a variety of branch cable styles or have a large volume when branching. However, this invention does not integrate real-time status perception and active protection functions.

[0005] Existing low-voltage power cables have several significant drawbacks. First, insufficient structural strength makes them susceptible to damage from external forces during installation, laying, and long-term operation, such as bending, compression, or environmental corrosion, thus shortening their service life and causing safety hazards. Second, low operation and maintenance efficiency manifests in difficulties in fault location, reliance on manual labor for inspections, and time-consuming processes, resulting in high maintenance costs and impacting the stability and economy of the power system. Summary of the Invention

[0006] The core of this invention lies in addressing the problems of traditional low-voltage cables in existing technologies, such as limited functionality, high maintenance costs, and difficulty in adapting to complex environments, through the coordinated design of a supporting frame and reinforced wiring harness, combined with an auxiliary protection system. Simultaneously, it enables real-time monitoring and early warning of cable operating status, reducing maintenance costs and extending cable lifespan.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A composite low-voltage power cable includes a core bundle, a flame-retardant insulating layer on the outside of the core bundle, multiple equally spaced support frames on the flame-retardant insulating layer, and a reinforcing wire bundle passing through the multiple support frames; multiple evenly distributed wire grooves matching the reinforcing wire bundle are opened on the inner side of the support frame, and multiple evenly distributed corrugated grooves are provided on the outer surface of the support frame, with support strips laid on the corrugated grooves.

[0009] The reinforced wiring harness includes a pair of tension ropes, and multiple isolation strips inserted into the wire slots are snapped between the pair of tension ropes. The isolation strips have wire holes and main monitoring lines are threaded through them. Temperature and pressure sensors are installed on the main monitoring lines, and secondary monitoring lines are connected between two adjacent main monitoring lines.

[0010] An outer insulating layer is fitted on the outside of the support frame, and a protective film is connected between the support frame and the outer insulating layer. The protective film includes a main mold layer covering the support frame and a flexible film covering the gap between two adjacent support frames.

[0011] Multiple outer sheaths are provided on the outside of the outer insulation layer. The outer sheaths are fixed on one outer insulation layer or between two adjacent outer insulation layers. Fixing nails that can be inserted into the support strips can be detachably installed on the outer sheaths.

[0012] Furthermore, at least one outer sheath is equipped with a data acquisition module and a wireless transmission unit, and multiple reinforcing wire harnesses are connected to the data acquisition module for signal transmission.

[0013] Furthermore, the front and rear ends of the support frame are provided with annular grooves, and sealing rings are engaged in the annular grooves. The sealing rings are provided with threading holes that match the tensile ropes.

[0014] Furthermore, the surface of the outer insulation layer is coated with a marking strip that matches the position of the support strip.

[0015] Furthermore, the secondary monitoring line includes a connecting pipe that connects two adjacent primary monitoring lines. A humidity sensor and an indicator light are installed on the connecting pipe. Each secondary monitoring line is associated with its connected primary monitoring line. When the data detected by the primary or secondary monitoring line exceeds a set threshold, the indicator light will illuminate.

[0016] Furthermore, a flexible protective layer is detachably connected between two adjacent outer sheaths. The flexible protective layer is used to cover the gap between two adjacent support frames and is fixed to the outer sheath by fixing nails.

[0017] Furthermore, when the cable is bent at 0-45 degrees, two adjacent support frames do not contact each other.

[0018] Furthermore, the support frame includes a buffer frame made of elastic material, with a rubber insulation layer laid on the outer end of the buffer frame.

[0019] Furthermore, it also includes an auxiliary protection system, including a monitoring module, a data processing module, a wireless transmission module, and a remote early warning module. The monitoring module is used to collect operating parameters at different locations inside the cable, the data processing module is used to organize and analyze the full-node operating data collected by the monitoring module, the wireless transmission module is used to remotely transmit the processed operating data and anomaly judgment results to the operation and maintenance monitoring terminal, and the remote early warning module is used to realize remote cable operation anomaly alarm.

[0020] Compared with the prior art, the advantages of this invention are:

[0021] (1) This solution constructs a composite structure that combines rigid support and flexible buffer through the coordinated design of the support skeleton and the reinforcing wire harness: the equidistantly distributed support skeleton provides ring structure support for the cable, and together with the flame-retardant isolation layer and the outer insulation layer, it can resist mechanical stress such as external extrusion and collision; the wire groove between the support skeleton and the isolation strip of the reinforcing wire harness are precisely matched to form an axial tensile system to prevent the cable from being stretched by external force and causing the wire core to break.

[0022] (2) This solution integrates a multi-dimensional monitoring and modular protection system to achieve full-process control of cable operation status: the main monitoring line is equipped with temperature and pressure sensors, and the secondary monitoring line integrates humidity sensors and indicator lights to form a distributed monitoring network of all nodes, which can monitor the multi-dimensional operating parameters inside the cable in real time and accurately. Through the comprehensive collection and analysis of key indicators such as temperature, pressure and humidity, potential safety hazards can be identified in the first time. Combined with the stable data transmission of the wireless transmission module and the multi-level alarm mechanism of the remote early warning module, maintenance personnel can quickly locate the abnormal node, grasp the details of abnormal parameters, and take targeted maintenance measures in a timely manner to effectively avoid the expansion of the fault. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 This is a cross-sectional view of the present invention;

[0025] Figure 3 for Figure 2 Schematic diagram of the structure at point A;

[0026] Figure 4 for Figure 2 Schematic diagram of the structure at point B;

[0027] Figure 5 This is a cross-sectional view of the outer sheath of the present invention;

[0028] Figure 6 for Figure 5 Schematic diagram of the structure at point C;

[0029] Figure 7 This is a partial cross-sectional view of the sealing ring after the flexible membrane has been replaced according to the present invention.

[0030] Figure 8 This is a top view of the cable bending section of the present invention;

[0031] Figure 9 This is a schematic diagram of the system connection of the present invention.

[0032] Explanation of the labels in the diagram:

[0033] 1. Wire core bundle; 2. Flame-retardant insulation layer; 3. Support frame; 31. Wire channel; 32. Corrugated groove; 4. Reinforced wire bundle; 401. Tensile rope; 402. Isolation strip; 403. Main monitoring line; 404. Secondary monitoring line; 5. Outer insulation layer; 6. Protective film; 601. Main mold layer; 602. Flexible film; 7. Support strip; 8. Outer sheath; 801. Fixing nail; 9. Sealing ring. Detailed Implementation

[0034] The technical solutions will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0035] First implementation method:

[0036] Please see Figures 1-8 A composite low-voltage power cable includes a core bundle 1, a flame-retardant isolation layer 2 is provided on the outside of the core bundle 1, a plurality of support frames 3 are provided on the flame-retardant isolation layer 2 at equal intervals, and a reinforcing wire bundle 4 is threaded between the plurality of support frames 3.

[0037] The inner side of the support frame 3 is provided with multiple evenly distributed wire grooves 31 that match the reinforcing wire harness 4, and the outer surface of the support frame 3 is provided with multiple evenly distributed trough grooves 32, on which support strips 7 are laid.

[0038] The reinforced wiring harness 4 includes a pair of anti-pull ropes 401, and a plurality of isolation strips 402 inserted into the wire slots 31 are snapped between the pair of anti-pull ropes 401. The isolation strips 402 have wire holes and main monitoring lines 403 are threaded through them. Temperature and pressure sensors are installed on the main monitoring lines 403. A secondary monitoring line 404 is connected between two adjacent main monitoring lines 403. The secondary monitoring line 404 includes a connecting tube connecting two adjacent main monitoring lines 403.

[0039] An outer insulating layer 5 is sleeved on the outside of the support frame 3, and a protective film 6 is connected between the support frame 3 and the outer insulating layer 5. The protective film 6 includes a main mold layer 601 covering the support frame 3 and a flexible film 602 covering the gap between two adjacent support frames 3.

[0040] Multiple outer sheaths 8 are provided on the outer side of the outer insulation layer 5. The outer sheaths 8 are fixed on one outer insulation layer 5 or between two adjacent outer insulation layers 5. Fixing nails 801 inserted into the support strips 7 are detachably installed on the outer sheaths 8. The support strips 7 are plastic strips. At least one outer sheath 8 is provided with a data acquisition module and a wireless transmission unit. Multiple reinforcing wire harnesses 4 are all connected to the data acquisition module for signal connection. The function of the support strips 7 is that when the outer sheaths 8 are adjusted, the fixing nails 801 are only inserted into the support strips 7 without damaging the support frame 3, ensuring that the protective performance of the support frame 3 is not damaged due to the installation of the outer sheaths 8.

[0041] Optionally, a humidity sensor and an indicator light are installed on the connecting tube (the indicator light can also be omitted). Each secondary monitoring line 404 is associated with its connected primary monitoring line 403. When the data detected by the primary monitoring line 403 or the secondary monitoring line 404 exceeds the set threshold, the indicator light will light up. The temperature and pressure sensor on the primary monitoring line 403 is connected in parallel with the humidity sensor on the secondary monitoring line 404 and is electrically connected to the data acquisition module on the outer sheath 8.

[0042] It should be noted that if an indicator light is installed on the connecting pipe, a transparent observation window should be provided on the outer sheath 8 to ensure that the light emitted by the indicator light can be seen from the outside of the outer sheath 8; if the indicator light is not installed, there is no need to provide a transparent observation window to reduce production costs.

[0043] The surface of the outer insulation layer 5 is coated with an identification strip that matches the position of the support strip 7. The identification strip is used to indicate the position of the support strip 7 and to ensure that when the fixing nail 801 is installed on the outer sheath 8, the fixing nail 801 can be inserted into the support strip 7.

[0044] The cable of the present invention is buffered and protected by the support frame 3, and a controllable deformation gap is left between adjacent support frames 3 and sealed by the flexible membrane 602; for straight laying paths, the outer sheath 8 is set in the gap between adjacent support frames 3 to seal.

[0045] A flexible protective layer (which can be a corrugated pipe) is detachably connected between two adjacent outer sheaths 8. This flexible protective layer covers the gap between two adjacent support frames 3 and is fixed to the outer sheaths 8 by fixing nails 801. For laying paths with large bends, the outer sheaths 8 are unlocked and moved to a suitable position on the outer insulation layer 5 before being fixed. Then, a flexible sealing layer is installed between multiple outer sheaths 8 in the bend section to effectively prevent external moisture and dust from entering the gap between two adjacent support frames 3. See [link to details]. Figure 8 .

[0046] For further details, please refer to [link / reference]. Figure 6The front and rear ends of the support frame 3 are provided with annular grooves, and sealing rings 9 are snapped into the annular grooves. The sealing rings 9 are provided with threading holes that match the tensile rope 401. The sealing rings 9 are used to position and fix the two ends of the reinforcing wire harness 4 to prevent axial displacement inside the cable, and at the same time enhance the sealing of the end face of the support frame 3 to prevent external moisture or impurities from entering.

[0047] See Figure 7 On the other hand, when the flexible membrane 602 needs to be disassembled for maintenance of the main monitoring line 403 or the auxiliary monitoring line 404, or when the flexible membrane 602 needs to be maintained after it is damaged, the flexible membrane 602 can be cut off, and then the edge of the new flexible membrane 602 can be placed into the annular groove and clamped by the sealing ring 9 (the support frame 3 can be glued to the sealing ring 9 to fix it), so as to fix the flexible membrane 602 after replacement.

[0048] The length of the gap between two adjacent support frames 3 is sufficient to ensure that the two adjacent support frames 3 do not contact each other when the cable is bent at an angle of 0-45 degrees. The support frame 3 includes a buffer frame made of elastic material, and the outer end of the buffer frame is covered with a rubber insulation layer.

[0049] Multiple main monitoring lines 403 are electrically connected to the data acquisition module. The data acquisition module transmits real-time data detected by temperature and pressure sensors and humidity sensors to the remote monitoring platform via a wireless transmission unit, enabling real-time monitoring and early warning of the cable's operating status. This composite low-voltage power cable, through the coordinated design of the support skeleton and reinforced wire harness, not only improves the overall tensile strength and structural stability, but also monitors the internal temperature, pressure, and humidity parameters of the cable in real time. Combined with the protective structure of the outer sheath and flexible protective layer, it effectively adapts to the laying and use requirements in complex environments, extending the cable's service life.

[0050] When the cable in this design is in normal operation, the core bundle 1 carries low-voltage power transmission. The outer flame-retardant isolation layer 2 provides basic flame retardancy and internal isolation. The support frame 3 provides structural support for the cable's interior, preventing deformation and collapse due to external pressure. The tensile rope 401 of the reinforced core bundle 4 improves the overall tensile strength of the cable, preventing the core bundle 1 from breaking when pulled by external forces. The support strip 7 in the trough groove 32 on the surface of the support frame 3 provides a stable installation base for the outer sheath 8. The main mold layer 601 of the protective film 6 covers the support frame 3, and the flexible film 602 covers the gaps between adjacent support frames 3. Together with the outer insulation layer 5, reliable insulation protection is achieved. The outer sheath 8 and the flexible protective layer further block external moisture, impurities, and external force damage, improving the cable's adaptability to complex environments.

[0051] Operational status monitoring: During cable operation, the temperature and pressure sensors installed on the main monitoring line 403 collect temperature and pressure parameters at different locations inside the cable in real time. The humidity sensor in the secondary monitoring line 404 between two adjacent main monitoring lines 403 collects humidity parameters at the gaps between the support frame 3 in real time. All collected data are transmitted to the outer sheath 8 with the data acquisition module. After the data acquisition module processes the data, it is sent to the remote monitoring platform through the wireless transmission unit to realize remote real-time monitoring of the operational status.

[0052] When the temperature, pressure, or humidity parameters at a certain location exceed the set threshold, the indicator light on the corresponding secondary monitoring line 404 will automatically light up, allowing on-site maintenance personnel to quickly locate the abnormal location. At the same time, the remote monitoring platform will issue an early warning to provide an alarm reminder.

[0053] Maintenance and repair work: When a local fault is confirmed inside the cable, the outer sheath 8 and flexible protective layer corresponding to the fault location can be directly removed without cutting the entire cable. The internal structure at the fault location can be repaired or partially replaced. After the repair is completed, the outer sheath 8 and flexible protective layer can be fixed and reset with fixing nails 801 to restore the cable to use. This effectively reduces maintenance costs and the scope of power outage impact. If the cable is subjected to external force, the tension rope 401 bears most of the tensile load, and the sealing ring 9 restricts the axial displacement of the reinforcing wire bundle 4, preventing internal structural misalignment during the pulling process, ensuring the overall stability of the cable structure, and preventing damage to the wire core bundle 1.

[0054] This implementation relies on the buffer structure and gap design of the supporting skeleton 3, combined with the main mold layer 601 and flexible membrane 602 of the protective membrane 6, which not only allows the cable to bend from 0 to 45 degrees, adapting to laying paths with large bending ranges, but also seals the internal gaps to prevent the intrusion of external impurities, and disperses external forces to prevent the cable from being squeezed and deformed, effectively improving the structural stability.

[0055] The tensile rope 401 of the reinforced wire harness 4 can bear most of the tensile load. Together with the sealing ring 9, it limits the axial movement of the reinforced wire harness 4, preventing internal structural misalignment after external pulling and protecting the wire core bundle 1 from damage. The built-in main monitoring line 403 and auxiliary monitoring line 404 can collect the internal temperature, pressure and humidity parameters of the cable in real time. Together with the data acquisition module and wireless transmission unit on the outer sheath 8, it can realize remote early warning. It can also be equipped with corresponding indicator lights for quick on-site positioning, which greatly improves the efficiency of operation and maintenance.

[0056] The outer sheath 8 is detachable and adjustable. Together with the support bar 7, fixing nail 801 and replaceable flexible membrane 602, local fault repair only requires disassembling the corresponding position, without cutting the entire cable, effectively reducing maintenance costs and the scope of power outage impact. Combined with the basic flame-retardant protection of the flame-retardant isolation layer 2, it can be adapted to a variety of complex working conditions and extend the overall service life of the cable.

[0057] Second implementation method:

[0058] Please see Figure 9 Compared to the first embodiment, this embodiment also provides an auxiliary protection system, including:

[0059] The monitoring module is used to collect operating parameters at different locations inside the cable. The monitoring module relies on the reinforced wire harness 4 in the first embodiment to collect cable operating parameters: the temperature and pressure sensor installed on the main monitoring line 403 collects the temperature and pressure parameters of the corresponding nodes inside the cable in real time, and the humidity sensor installed in the connecting pipe of the auxiliary monitoring line 404 collects the humidity parameters of the gap between two adjacent support frames 3 in real time, providing complete basic data for judging the cable operating status.

[0060] The data processing module is used to organize and analyze the cable operation parameters collected by the monitoring module. Through the data acquisition unit integrated on the outer sheath 8, it organizes the multi-node data transmitted by multiple reinforced wire harnesses 4, compares the data of each node with the preset safety threshold, outputs the judgment result of whether the corresponding node is abnormal, and transmits the complete data and judgment result to the remote early warning module in a synchronized manner to ensure the accuracy of subsequent alarm and maintenance judgment.

[0061] The wireless transmission module is used to transmit the data collected by the monitoring module to the data processing module deployed remotely or in the cloud. It relies on the wireless transmission unit set on the outer sheath 8 to realize wireless data transmission, and can stably send data to the remote monitoring platform to ensure the real-time nature of remote operation and maintenance.

[0062] The remote early warning module is used to remotely detect and alert to abnormal cable operation. After the data processing module outputs the abnormal judgment result, the wireless transmission module synchronously sends the abnormal node location and abnormal parameter information to the remote monitoring platform. The remote monitoring platform then triggers early warning measures, including but not limited to: multi-level audible and visual alarms and pushing abnormal reminder information to operation and maintenance personnel. The remote early warning module enables timely detection and handling of cable hazards at the remote end, preventing the fault from escalating.

[0063] This implementation method enables real-time and accurate monitoring of multi-dimensional operating parameters within the cable. Through comprehensive collection and analysis of key indicators such as temperature, pressure, and humidity, potential safety hazards can be identified immediately. Combined with the stable data transmission of the wireless transmission module and the multi-level alarm mechanism of the remote early warning module, maintenance personnel can quickly locate abnormal nodes, understand the details of abnormal parameters, and take timely and targeted maintenance measures to effectively prevent the escalation of faults. At the same time, this auxiliary protection system is deeply integrated with the main cable structure of the first implementation method, without affecting the original transmission performance of the cable, achieving a unity of functionality and practicality. It provides reliable support for the intelligent operation and maintenance of low-voltage power cables and significantly improves the operational stability and safety of the cable system.

[0064] The above description is merely a preferred embodiment of the present invention; it encompasses all the protection scope of the present invention. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solutions and improved concepts of the present invention, should be covered within the protection scope of the present invention.

Claims

1. A composite low-voltage power cable, comprising a core bundle (1), wherein a flame-retardant insulating layer (2) is provided on the outer side of the core bundle (1), characterized in that: The flame-retardant isolation layer (2) is provided with multiple support frames (3) evenly distributed, and a reinforcing wire harness (4) is threaded between the multiple support frames (3); multiple evenly distributed wire grooves (31) matching the reinforcing wire harness (4) are opened on the inner side of the support frame (3); multiple evenly distributed trough grooves (32) are provided on the outer surface of the support frame (3); and a support strip (7) is laid on the trough groove (32). The reinforced wire harness (4) includes a pair of anti-tension ropes (401), and a plurality of isolation strips (402) inserted into the wire slots (31) are snapped between the pair of anti-tension ropes (401). The isolation strips (402) have wire holes and main monitoring lines (403) are threaded through them. Temperature and pressure sensors are installed on the main monitoring lines (403), and secondary monitoring lines (404) are connected between two adjacent main monitoring lines (403). An outer insulating layer (5) is provided on the outside of the support frame (3), and a protective film (6) is connected between the support frame (3) and the outer insulating layer (5). The protective film (6) includes a main mold layer (601) covering the support frame (3) and a flexible film (602) covering the gap between two adjacent support frames (3). Multiple outer sleeves (8) are provided on the outside of the outer insulation layer (5). The outer sleeves (8) are fixed on one outer insulation layer (5) or between two adjacent outer insulation layers (5). Fixing nails (801) inserted into the support bar (7) are detachably installed on the outer sleeves (8).

2. The composite low-voltage power cable according to claim 1, characterized in that: At least one of the outer sheaths (8) is provided with a data acquisition module and a wireless transmission unit, and the multiple reinforcing wire harnesses (4) are all connected to the data acquisition module for signal transmission.

3. The composite low-voltage power cable according to claim 1, characterized in that: The front and rear ends of the support frame (3) are provided with annular grooves, and a sealing ring (9) is snapped into the annular groove. The sealing ring (9) is provided with a thread hole that matches the tensile rope (401).

4. The composite low-voltage power cable according to claim 1, characterized in that: The surface of the outer insulation layer (5) is coated with an identification strip that matches the position of the support strip (7).

5. A composite low-voltage power cable according to claim 1, characterized in that: The secondary monitoring line (404) includes a connecting tube connecting two adjacent main monitoring lines (403). A humidity sensor and an indicator light are installed on the connecting tube. Each secondary monitoring line (404) is associated with its connected main monitoring line (403). When the data detected by the main monitoring line (403) or the secondary monitoring line (404) exceeds a set threshold, the indicator light will light up.

6. A composite low-voltage power cable according to claim 1, characterized in that: A flexible protective layer is detachably connected between two adjacent outer sheaths (8). The flexible protective layer is used to cover the gap between two adjacent support frames (3). The flexible protective layer is fixed to the outer sheath (8) by fixing nails (801).

7. A composite low-voltage power cable according to claim 1, characterized in that: When the cable is bent at 0-45 degrees, the two adjacent support frames (3) do not contact each other.

8. A composite low-voltage power cable according to claim 1, characterized in that: The support frame (3) includes a buffer frame made of elastic material, and the outer end of the buffer frame is covered with a rubber insulation layer.

9. A composite low-voltage power cable according to claim 1, characterized in that: It also includes an auxiliary protection system, comprising a monitoring module, a data processing module, a wireless transmission module, and a remote early warning module. The monitoring module is used to collect operating parameters at different locations inside the cable. The data processing module is used to organize and analyze the full-node operating data collected by the monitoring module. The wireless transmission module is used to remotely transmit the processed operating data and anomaly judgment results to the operation and maintenance monitoring terminal. The remote early warning module is used to realize remote alarm for cable operation anomalies.

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