Low-voltage user electricity consumption condition monitoring device

Abstract

The invention discloses a low-voltage user electricity consumption condition monitoring device, and relates to the technical field of user electricity consumption condition monitoring, the low-voltage user electricity consumption condition monitoring device comprises a transmitting device and a receiving module, the transmitting device and the receiving module are connected through a wireless transmission module, and a monitoring device for monitoring cable conditions is arranged in a fixing ring of the transmitting device. The receiving module comprises a data processing unit, a data acquisition unit, a power supply unit and a display screen, the power supply unit supplies power to the whole receiving module, the data acquisition unit receives data monitored by the monitoring device, and the data processing unit processes and analyzes the data and displays the data through the display screen. The device is simple in structure and convenient and fast to install, the inspection burden of operators is relieved, and normal power utilization of a low-voltage transformer area is guaranteed; the transmitting device is used for sensing and monitoring a low-voltage line and sending monitoring data to the receiving module after monitoring is completed, and the receiving module is used for actively analyzing abnormal conditions of voltage and current of a user monitored by the transmitting device and visually displaying analysis results.

Description

Technical Field

[0001] The present invention belongs to the technical field of user electricity usage monitoring, and in particular relates to a low-voltage user electricity usage monitoring device. Background Art

[0002] As the power supply line section closest to consumers, the operational stability of low-voltage substations directly impacts their electricity experience. However, due to the widespread distribution of low-voltage users and the complex physical environment, traditional monitoring methods, which rely on manual inspections and passive recording equipment, struggle to capture abnormalities in user electricity usage in real time. This is especially true in fault scenarios such as three-phase imbalance or live lines, making it difficult to accurately locate the problem, resulting in damage to user equipment or even power outages in the entire substation.

[0003] Three-phase imbalance is a common problem in low-voltage substations. Some substations fail to adhere to load balancing principles when connecting power to meters. This leads to chronic overloads in one phase, generating zero-sequence currents that increase the neutral current abnormally, causing neutral burnout and tripping of low-voltage switches. Furthermore, this shift in neutral potential causes voltage fluctuations on the user side, which can reduce electrical efficiency at best and even cause overvoltage damage to equipment at worst. Transformers operating with three-phase imbalance significantly reduce output efficiency, waste energy, and even accelerate equipment aging.

[0004] Furthermore, the complex wiring structure in low-voltage substations makes fault location extremely challenging. This includes transmission lines, distribution transformers, and user-side branch lines, often with crossings and branches. The load fluctuates dramatically, user electricity usage is highly random, and multiple fault types (such as short circuits, ground faults, and overloads) are superimposed, making accurate fault location difficult with traditional detection methods.

[0005] Traditional substation line loss management still relies on manual meter reading, which can easily lead to statistical errors due to issues such as asynchronous meter reading times and inconsistent system data interfaces. Furthermore, the massive amount of surveillance video lacks intelligent analysis, making it easy for critical anomalies to be overlooked.

[0006] Therefore, in order to solve the above problems, it is necessary to design a low-voltage user electricity usage monitoring device to monitor the electricity usage of low-voltage users, monitor the electricity usage and status of low-voltage users, and provide reliable data. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to solve the deficiencies in the prior art and design a new low-voltage user electricity consumption monitoring device with a simple structure, convenient and quick installation, good stability, which reduces the inspection burden of operators and ensures the normal electricity consumption of low-voltage substations. The device comprises a transmitter fixed on a low-voltage tower and a receiving module fixed in an assessment box. The specific monitoring process is completed by the transmitter sensing and monitoring the low-voltage line. After the monitoring is completed, the monitoring data is sent to the receiving module. The receiving module actively analyzes the abnormal voltage and current of the user sensed and monitored by the transmitter and displays the analysis results in a visual manner. This allows staff to know the cable status without having to climb up for inspection.

[0008] The solution adopted by the present invention to solve the technical problem is:

[0009] A low-voltage user electricity consumption monitoring device,

[0010] It is characterized by:

[0011] It includes a transmitter fixed on the low-voltage tower and a receiving module fixed in the test box.

[0012] The transmitting device and the receiving module are connected by setting a wireless transmission module.

[0013] The transmitting device includes a fixing ring, which is sleeved on the outside of the low-voltage station area cable.

[0014] The interior of the fixing ring is hollow, and a monitoring device for monitoring the condition of the low-voltage cable is provided inside the fixing ring.

[0015] The receiving module at least includes a data processing unit, a data acquisition unit, a power supply unit and a display screen. The power supply unit supplies power to the entire receiving module. The data acquisition unit receives data monitored by the monitoring device. The data processing unit processes and analyzes the data received by the data acquisition unit and displays it on the display screen.

[0016] As a preferred embodiment of the present invention,

[0017] The monitoring device comprises at least a temperature sensor and a current transformer,

[0018] The temperature sensor is used to monitor the temperature near the low-voltage cable.

[0019] The current transformer is used to monitor the current of the low-voltage cable.

[0020] As a preferred embodiment of the present invention,

[0021] The monitoring device also includes a radar sensor,

[0022] Radar waves are used to determine whether there are abnormal line breakpoints on the low-voltage user side and to calculate the distance between the location of the low-voltage cable breakpoint and the location of the monitoring device.

[0023] As a preferred embodiment of the present invention,

[0024] The transmitting device includes an A-phase transmitting device fixed on the A-phase line, a B-phase transmitting device fixed on the B-phase line, a C-phase transmitting device fixed on the C-phase line, and a zero-line transmitting device fixed on the zero line.

[0025] As a preferred embodiment of the present invention,

[0026] The fixing ring includes a first fixing ring and a second fixing ring,

[0027] One end of the first fixing ring is connected to the second end of the fixing ring by a hinge.

[0028] The other end of the first fixing ring is provided with a protrusion,

[0029] The other end of the second fixing ring is provided with a buckle corresponding to the protrusion.

[0030] As a preferred embodiment of the present invention,

[0031] The side of the assessment box is provided with a prefabricated hole corresponding to the display screen.

[0032] As a preferred embodiment of the present invention,

[0033] The fixing ring is made of insulating material.

[0034] As a preferred embodiment of the present invention,

[0035] The fixing ring is made of transparent material.

[0036] As a preferred embodiment of the present invention,

[0037] A rubber protective sleeve is sleeved on the outer side of the launching device.

[0038] As a preferred embodiment of the present invention,

[0039] The rubber protective cover comprises a first protective cover and a second protective cover,

[0040] The first protective cover is sleeved on the outside of the first fixing ring, and the second protective cover is sleeved on the outside of the second fixing ring.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] 1. The device of the present invention provides a low-voltage user electricity consumption monitoring device, which has a simple structure, is easy and quick to install, has good stability, reduces the inspection burden of operators, and ensures normal electricity consumption in the low-voltage area.

[0043] The system consists of a transmitter fixed to a low-voltage tower and a receiver module fixed in an inspection box. The transmitter monitors the low-voltage line and sends the data to the receiver module, which proactively analyzes any abnormal voltage and current conditions detected by the transmitter and displays the results visually. This allows workers to monitor cable conditions without having to climb high for inspections.

[0044] 2. The device of the present invention sets the receiving module in the assessment box, so that the staff can also view the relevant data of the low-voltage substation line sensed and monitored by the transmitting device in real time when performing other inspection operations, and remotely learn the operation status of the line.

[0045] 3. The device of this invention utilizes temperature sensors, current transformers, and radar sensors to perform three-dimensional diagnosis of low-voltage substation cables based on temperature, current, and structure. Using temperature, current, and structure monitoring data, the receiving module can cross-validate multiple abnormal signals and predict potential risks through data trend analysis. This transforms existing low-voltage substation cable maintenance from post-repair to pre-emptive prevention, reducing the probability of large-scale power outages.

[0046] 4. The fixing ring includes a first fixing ring and a second fixing ring. One end of the first fixing ring is connected to the other end of the second fixing ring by a hinge, and the other end is connected by a protrusion and a buckle. This makes the fixing ring easy to install and remove. During installation, open the buckle, put the fixing ring on the low-voltage cable, and then re-fasten the buckle to complete the installation.

[0047] 5. The fixing ring is made of transparent material. Workers can directly observe the working status of the internal circuits and components of the device without disassembling the device, avoiding the situation where the internal contacts cannot be disconnected normally due to welding or adhesion, thereby preventing the risk of electric shock and short circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is a structural diagram of a low-voltage user electricity consumption monitoring device proposed by the present invention;

[0049] Figure 2 This is a structural diagram of a transmitter device for monitoring power consumption of low-voltage users proposed by the present invention;

[0050] Figure 3 This is a structural diagram of a receiving module of a low-voltage user electricity consumption monitoring device proposed by the present invention;

[0051] Figure 4 This is a structural schematic diagram of a fixing ring of a low-voltage user electricity consumption monitoring device proposed by the present invention.

[0052] Description of reference numerals:

[0053] 1. Launching device,

[0054] 1-1, fixed ring,

[0055] 1-1-1, the first fixed ring,

[0056] 1-1-2, the second fixing ring,

[0057] 1-1-3, hinge,

[0058] 1-1-4, bulge,

[0059] 1-1-5, buckle,

[0060] 1-2. Monitoring equipment,

[0061] 1-2-1, Temperature sensor,

[0062] 1-2-2, Current transformer,

[0063] 1-2-3, radar sensor,

[0064] 1-3, Phase A transmitter,

[0065] 1-4, B phase transmitting device,

[0066] 1-5, C-phase transmitting device,

[0067] 1-6, zero line transmitter,

[0068] 2. Receiver module,

[0069] 2-1, data processing unit,

[0070] 2-2, data acquisition unit,

[0071] 2-3. Power supply unit,

[0072] 2-4, display screen,

[0073] 3. Wireless transmission module. DETAILED DESCRIPTION

[0074] The specific implementation of the present invention is described below with reference to the accompanying drawings and embodiments:

[0075] It should be noted that the structures, colors, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0076] At the same time, in the description of the present invention, it should be understood that the terms "one end", "the other end", "middle", "upper", "one side", "top", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0077] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0078] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0079] like Figures 1-4 As shown, the present invention proposes a low-voltage user electricity usage monitoring device, comprising a transmitter 1 fixed to a low-voltage pole tower and a receiver module 2 fixed in an inspection box. Transmitter 1 senses and monitors parameters such as voltage and current of the low-voltage line in real time, ensuring the timeliness and accuracy of the data. Wireless communication technology is used to transmit the monitoring data to receiver module 2 in real time, improving the efficiency and reliability of data transmission.

[0080] Transmitter 1 senses and monitors low-voltage lines, sending the data to receiver 2. The receiver has a built-in data processing module that proactively analyzes abnormalities in the user's voltage and current detected by transmitter 1, automatically identifying these abnormalities and visually displaying the analysis results. This system monitors user electricity usage in real time, promptly displaying any anomalies on the display and sending them to a staff terminal, helping to prevent power outages and losses.

[0081] Placing the receiving module 2 inside the assessment box eliminates the need for workers to perform height-based operations. Instead, workers can view the relevant data of the low-voltage substation lines sensed and monitored by the transmitting device 1 in real time within the assessment box, remotely understanding the operating conditions of the lines and saving a significant amount of time and effort. Furthermore, placing the receiving module 2 inside the assessment box reduces the number of times workers must perform height-based operations, thereby reducing safety risks. Furthermore, the display screen of the receiving module can display information in real time. Once an abnormality or potential fault is detected, potential faults and abnormal power usage can be promptly identified, allowing immediate action to address them and avoid more serious consequences, thus helping to prevent power accidents.

[0082] Transmitter 1 and receiver 2 are connected via wireless transmission module 3, enabling remote monitoring of low-voltage lines. Workers can monitor line conditions from within the inspection box. Furthermore, wireless transmission module 3 within receiver 2 connects to a worker terminal to push abnormal data. In the event of a neutral line fault, users can be remotely isolated to ensure safety. This allows for timely maintenance and ensures normal power supply to the substation.

[0083] The transmitting device 1 includes a fixing ring 1-1, which is sleeved on the outside of the low-voltage station cable. The transmitting device 1 as a whole adopts a ring structure and is sleeved on the outside of the low-voltage station cable, so that the distance between the internal monitoring components and the low-voltage station cable is as close as possible, ensuring that the inspection results are more accurate and accurately reflect the operating status of the cable.

[0084] The interior of the fixing ring 1 - 1 is hollow, and a monitoring device 1 - 2 for monitoring the condition of the cables in the low-voltage station area is arranged therein, thereby increasing the space utilization rate of the launching device 1 .

[0085] The receiving module 2 comprises at least a data processing unit 2-1, a data acquisition unit 2-2, a power supply unit 2-3, and a display screen 2-4. The power supply unit 2-3 provides power to the receiving module 2 as a whole and includes a built-in power management module, enabling dynamic power consumption allocation and ensuring power supply. The data acquisition unit 2-2 receives data from the monitoring device, and the data processing unit 2-1 processes and analyzes the data received by the data acquisition unit 2-2 and displays it on the display screen 2-4.

[0086] Preferably, the data acquisition unit 2 - 2 has a built-in data storage module that supports power-off retention to ensure data storage integrity in the event of a sudden network outage.

[0087] Monitoring equipment 1-2 includes at least a temperature sensor 1-2-1 and a current transformer 1-2-2. Temperature sensor 1-2-1 monitors the temperature near the low-voltage cable in the substation area, monitoring surface temperature changes in the substation area in real time. When the surface temperature of the substation area cable rises abnormally, receiving module 2 receives the information in real time and displays it on display screen 2-4. If the temperature is too high, a warning is sent to the staff terminal via wireless transmission technology. Current transformer 1-2-2 monitors the current in the substation area cable. Real-time monitoring of the temperature and current of the substation area cable improves the reliability and safety of the power system by preventing potential failures and fires.

[0088] By installing temperature sensors 1-2-1 and current transformers 1-2-2 on the low-voltage cables, the frequency of manual inspections can be effectively reduced (the traditional model requires regular power outages for inspections), and dynamic management can be achieved through remote monitoring, thus avoiding power outage losses caused by sudden failures.

[0089] Furthermore, when a local temperature rises abnormally on a low-voltage cable in a substation, the fault type can be quickly determined by combining current data. Excessive current indicates an overload; normal current but abnormal temperature suggests a localized poor contact. This effectively improves fault diagnosis efficiency. By continuously recording temperature and current data, a "digital twin" of the low-voltage cable can be constructed, enabling predictions of the cable's insulation lifespan and conductor aging trends.

[0090] Monitoring equipment 1-2 also includes radar sensor 1-2-3, which uses radar waves to determine whether there are abnormal line breakpoints on the low-voltage user side. By analyzing the time difference and phase changes of the radar wave reflection signal, radar sensor 1-2-3 accurately calculates the straight-line distance and azimuth between the breakpoint and the monitoring device, achieving sub-meter positioning accuracy. This provides strong support for the precise location of cable breakpoints in low-voltage substations.

[0091] If an abnormal breakpoint is detected, the time difference and phase change of the radar wave reflection signal can be analyzed to calculate the straight-line distance and azimuth between the breakpoint and the monitoring device. This allows the distance between the low-voltage cable breakpoint and the monitoring device to be calculated, achieving sub-meter positioning accuracy. This allows operations and maintenance personnel to quickly identify the fault point and perform repairs and replacements promptly. Traditional manual inspections rely on user reports or planned power outages, while radar monitoring enables uninterrupted real-time scanning, significantly reducing the mean time to locate a fault.

[0092] Compared with traditional manual inspections that rely on user reports or planned power outages for inspections, radar monitoring technology has significant advantages:

[0093] 1. Real-time dynamic monitoring: It realizes uninterrupted scanning without manual intervention and can capture line anomalies in real time;

[0094] 2. Excellent positioning accuracy: sub-meter positioning capability (error less than 1 meter), accurately locking the direction and distance of the fault point;

[0095] 3. Significantly improved efficiency: Automated data analysis reduces the mean time to locate faults from several hours or even longer in traditional models to minutes, significantly shortening the troubleshooting cycle.

[0096] 4. Reduce operation and maintenance costs: Reduce the frequency of manual inspections and the losses incurred during power outage detection, support operation and maintenance personnel to quickly reach the fault site, improve the efficiency of repair and replacement, and reduce manpower and time costs.

[0097] In this embodiment, monitoring equipment 1-2 includes a temperature sensor 1-2-1, a current transformer 1-2-2, and a radar sensor 1-2-3. Temperature sensor 1-2-1 is used to detect aging and localized temperature rise in the insulation layer of low-voltage cables in the substation area, accurately locating potential thermal hazards. Current transformer 1-2-2 monitors load balance and overload risks, providing early warning of electrical stress overloads. Radar sensor 1-2-3 detects hidden breakpoints and structural deformation, achieving sub-meter spatial positioning. This enables three-dimensional diagnosis of low-voltage cables in the substation area, including temperature, current, and structure.

[0098] By using temperature, current, and structural monitoring data, Receiver Module 2 can cross-verify multiple abnormal signals. Current overload reflects excessive electrical stress, foreshadowing a potential risk of melting or poor contact. Temperature anomalies are associated with localized overheating faults, such as aging insulation and increased contact resistance in connectors. Sudden changes in radar reflection signals indicate structural damage. The fusion of these three data sets enables penetrating diagnosis of complex faults, effectively identifying complex faults that are difficult to detect with traditional manual troubleshooting. For example, connector overheating leading to insulation carbonization, or current surges causing melting, elevates traditional manual troubleshooting from blind guesswork to precise, transparent location, improving fault identification efficiency.

[0099] The monitoring equipment of the device of the present invention constructs a three-dimensional fault diagnosis system from temperature anomaly warning, current overload protection to structural damage positioning, eliminating the blind spots of single parameter monitoring; through cross-parameter correlation analysis, it eliminates false alarm signals, improves the accuracy of fault identification in complex scenarios, and reduces power outage losses and operation and maintenance costs.

[0100] Compared to the inefficient traditional manual troubleshooting, the three-parameter linkage mechanism empowers Receiver Module 2 with decision-making capabilities. This not only captures the instant of a fault in real time, but also predicts potential risks through data trend analysis. For example, when the current continues to run high and the connector temperature rises, early abnormal signals such as temperature rise trends and load fluctuations can be used to predict potential hazards, pre-emptively detect insulation expansion and deformation, and forward abnormal data before a fuse occurs. This shifts the maintenance of existing low-voltage cables from post-empty repairs to pre-emptive prevention, reducing the probability of large-scale power outages.

[0101] Transmitter 1 includes A-phase transmitters 1-3 attached to the A-phase line, B-phase transmitters 1-4 attached to the B-phase line, C-phase transmitters 1-5 attached to the C-phase line, and neutral-line transmitters 1-6 attached to the neutral line. The A, B, and C-phase transmitters each capture high-frequency traveling wave signals in real time and transmit them to receiver module 2. Receiver module 2 then analyzes and processes these signals with its data processing module to accurately locate the fault point.

[0102] The fixing ring 1-1 includes a first fixing ring 1-1-1 and a second fixing ring 1-1-2. The fixing ring 1-1 is divided into the first fixing ring 1-1-1 and the second fixing ring 1-1-2, so that the fixing ring 1-1 is detachable, which is convenient for installation, disassembly and subsequent maintenance.

[0103] During the equipment installation phase, maintenance personnel can quickly complete the installation of the fixing ring through simple splicing operations; when the equipment needs to be repaired or parts replaced, it can also be easily disassembled. This greatly reduces the difficulty of installation and significantly improves the convenience and efficiency of subsequent maintenance, providing a solid guarantee for the long-term stable operation of the device of the present invention.

[0104] One end of the first fixing ring 1-1-1 and one end of the second fixing ring 1-1-2 are connected by a hinge 1-1-3, so that the first fixing ring 1-1-1 and the second fixing ring 1-1-2 are set as one body while ensuring the detachability of the fixing ring 1-1, providing convenience for installation and disassembly.

[0105] The other end of first fixing ring 1-1-1 is provided with a protrusion 1-1-4, and the other end of second fixing ring 1-1-2 is provided with a buckle 1-1-5 corresponding to protrusion 1-1-4. First fixing ring 1-1-1 and second fixing ring 1-1-2 are connected at one end, and the other ends are connected via protrusion 1-1-4 and buckle 1-1-5. During installation, open buckle 1-1-5, attach fixing ring 1-1 to the low-voltage substation cable, and re-fasten buckle 1-1-5 to complete the installation.

[0106] Buckle 1-1-5 can be directly selected from existing buckles 1-1-5 on the market. Make sure it corresponds to protrusion 1-1-4, and install the fixing ring 1-1 while being removable.

[0107] The side of the test box is provided with prefabricated holes corresponding to display screens 2-4. The staff can observe the condition of the low-voltage cable in the test area from outside the test box.

[0108] The fixing ring 1-1 is made of insulating material. It effectively isolates the internal circuit from the external environment, enhancing safety and preventing the risk of electric shock and short circuits caused by direct contact or a humid environment, ensuring the safety of operators and equipment.

[0109] For example, the fixing ring 1 - 1 can be made of high-temperature resistant epoxy resin material. Epoxy resin has excellent electrical insulation, high mechanical strength, and resistance to chemical corrosion.

[0110] The fixing ring 1-1 is made of a transparent material. This allows workers to directly observe the working status of the device's internal circuits and components without disassembling the device. This prevents the possibility of disconnection failure due to welding or adhesion of internal contacts, thereby preventing the risk of electric shock and short circuits, increasing safety during device use and protecting workers during observation.

[0111] A rubber protective sleeve is sleeved on the outside of the launch device 1. The rubber protective sleeve has good wear resistance, tear resistance and compression resistance, can effectively resist external physical impact, and protect the launch device 1 from wear, scratches or extrusion.

[0112] Furthermore, the rubber protective cover has excellent waterproof and moisture-proof properties, preventing moisture from invading the launcher 1, reducing the risk of moisture and short circuits in the internal components of the launcher 1. Furthermore, the rubber protective cover's high-quality sealing properties reduce the possibility of intrusion of foreign matter and dust, providing a stable operating environment for the launcher 1.

[0113] Moreover, the rubber protective cover has good chemical resistance and can resist the erosion of various acids, alkalis, organic solvents and other chemical substances, thereby extending the service life of the monitoring device, reducing the replacement frequency of the monitoring device and reducing costs.

[0114] The rubber protective sleeve includes a first protective sleeve and a second protective sleeve. The first protective sleeve is attached to the outside of the first fixing ring 1-1-1, and the second protective sleeve is attached to the outside of the second fixing ring 1-1-2. The rubber protective sleeves are arranged according to the structure of the fixing ring 1-1, ensuring convenience during installation, removal, and maintenance of the fixing ring 1-1, thereby improving work efficiency.

[0115] The preferred embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the scope of the present invention.

[0116] Many other changes and modifications can be made without departing from the spirit and scope of the present invention. It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A low-voltage user electricity consumption monitoring device, It is characterized by: It comprises a transmitting device (1) fixed at a low-voltage pole tower and a receiving module (2) fixed in an assessment box. The transmitting device (1) and the receiving module (2) are connected by providing a wireless transmission module (3). The transmitting device (1) comprises a fixing ring (1-1), wherein the fixing ring (1-1) is sleeved on the outside of the low-voltage station area cable. The interior of the fixing ring (1-1) is hollow, and a monitoring device (1-2) for monitoring the condition of the cables in the low-voltage area is arranged inside the fixing ring (1-1). The receiving module (2) at least comprises a data processing unit (2-1), a data acquisition unit (2-2), a power supply unit (2-3) and a display screen (2-4); the power supply unit (2-3) supplies power to the receiving module (2) as a whole; the data acquisition unit (2-2) receives data monitored by the monitoring device; the data processing unit (2-1) processes and analyzes the data received by the data acquisition unit (2-2) and displays the data on the display screen (2-4).

2. A low-voltage user electricity consumption monitoring device as claimed in claim 1, It is characterized by: The monitoring device (1-2) comprises at least a temperature sensor (1-2-1) and a current transformer (1-2-2), The temperature sensor (1-2-1) is used to monitor the temperature near the low-voltage cable. The current transformer (1-2-2) is used to monitor the current of the low-voltage cable.

3. A low-voltage user electricity consumption monitoring device as claimed in claim 2, It is characterized by: The monitoring device (1-2) further comprises a radar sensor (1-2-3), Radar waves are used to determine whether there are abnormal line breakpoints on the low-voltage user side and to calculate the distance between the location of the low-voltage cable breakpoint and the location of the monitoring device.

4. A low-voltage user electricity consumption monitoring device as claimed in claim 3, It is characterized by: The transmitting device (1) comprises an A-phase transmitting device (1-3) fixed on the A-phase line, a B-phase transmitting device (1-4) fixed on the B-phase line, a C-phase transmitting device (1-5) fixed on the C-phase line, and a neutral line transmitting device (1-6) fixed on the neutral line.

5. A low-voltage user electricity consumption monitoring device as claimed in claim 1, It is characterized by: The fixing ring (1-1) comprises a first fixing ring (1-1-1) and a second fixing ring (1-1-2), One end of the first fixing ring (1-1-1) and one end of the second fixing ring (1-1-2) are connected via a hinge (1-1-3). The other end of the first fixing ring (1-1-1) is provided with a protrusion (1-1-4). The other end of the second fixing ring (1-1-2) is provided with a buckle (1-1-5) corresponding to the protrusion (1-1-4).

6. A low-voltage user electricity consumption monitoring device as claimed in claim 1, It is characterized by: The side of the assessment box is provided with a prefabricated hole corresponding to the display screen (2-4).

7. A low-voltage user electricity consumption monitoring device as claimed in claim 5, It is characterized by: The fixing ring (1-1) is made of insulating material.

8. A low-voltage user electricity consumption monitoring device as claimed in claim 5, It is characterized by: The fixing ring (1-1) is made of a transparent material.

9. A low-voltage user electricity consumption monitoring device as claimed in claim 1, It is characterized by: The outer side of the launch device (1) is sleeved with a rubber protective sleeve.

10. A low-voltage user electricity consumption monitoring device as claimed in claim 9, It is characterized by: The rubber protective cover comprises a first protective cover and a second protective cover, The first protective sleeve is sleeved on the outside of the first fixing ring (1-1-1), and the second protective sleeve is sleeved on the outside of the second fixing ring (1-1-2).

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