Cable intelligent grounding monitoring control system and intelligent grounding box
Patent Information
- Application Number
- CN202510568506.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-11-03
AI Technical Summary
Traditional cable grounding boxes rely on manual inspection, which is inefficient, makes it difficult to monitor the grounding status in real time, and is prone to failure due to tangling and environmental factors. They also lack adaptive adjustment capabilities, pose safety hazards, and have high maintenance costs.
It employs distributed temperature sensors, high-precision resistance measurement units, and non-contact current transformers for multi-dimensional real-time monitoring. Combined with redundant grounding loop switching units and adjustable graphite discharge gaps for dual-redundant safety protection, the adaptive adjustment module adjusts according to temperature and humidity data. An LSTM neural network prediction model generates dynamic alarm thresholds. Power is supplied by solar panels and supercapacitors. The split-type sealed chamber structure and silver-plated copper alloy grounding busbar enhance reliability.
It enables intelligent, real-time monitoring and adaptive adjustment of cable grounding systems, improves fault detection speed and system stability, reduces maintenance costs, enhances safety and reliability, and supports remote monitoring and management.
Smart Images
Figure CN123034600A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of power equipment technology, and is a cable intelligent grounding monitoring and control system and an intelligent grounding box. Background Technology
[0002] In power systems, cable grounding boxes are one of the key pieces of equipment ensuring the safe operation of cables. Traditional cable grounding boxes mainly rely on regular manual inspections to monitor the grounding status, which is not only inefficient but also makes it difficult to detect potential grounding faults in real time. Furthermore, due to the lack of effective real-time monitoring methods, when anomalies occur in the grounding system, responses are often delayed, potentially leading to cable insulation damage, equipment failure, or even safety accidents, posing a serious threat to the stable operation of the power system. Manual inspections cannot monitor key parameters such as temperature, humidity, and contact resistance in real time, making it difficult to quickly locate the anomaly when a fault occurs, resulting in high maintenance costs and personal safety hazards.
[0003] Existing secondary cable grounding systems follow the principle of grounding within the nearest cabinet, lacking a separate grounding box. Furthermore, when there are many cable groups inside, they are prone to tangling and confusion, leading to difficulties in later maintenance. Moreover, the grounding busbar materials and design of traditional grounding boxes are easily affected by environmental factors such as oxidation and corrosion, resulting in increased grounding resistance and affecting grounding effectiveness. In complex outdoor environments, factors such as temperature and humidity changes and lightning strikes can also adversely affect the performance of the grounding system. However, traditional grounding boxes lack adaptive adjustment capabilities, making it difficult to maintain stable and reliable operation under different environmental conditions.
[0004] Therefore, there is an urgent need for an intelligent cable grounding monitoring and control system to solve the above-mentioned problems. Summary of the Invention
[0005] This invention provides a cable intelligent grounding monitoring and control system and an intelligent grounding box, which overcomes the shortcomings of the prior art. It can effectively solve the problem that existing secondary cable grounding does not have a separate grounding box, and when there are many cable groups inside, they are easy to get tangled and cannot be distinguished, which leads to difficulties in later maintenance.
[0006] One of the technical solutions of the present invention is achieved through the following measures: a cable intelligent grounding monitoring and control system, comprising a sensor module, a data processing module, a communication module, a grounding status adjustment module, and a power supply module; The sensor module is connected to the data processing module and is used to collect environmental and grounding parameters of the cable grounding box. The data processing module is connected to the sensor module, the communication module and the grounding state adjustment module respectively. It is used to process and analyze the data collected by the sensor module and send the processing results to the communication module and the grounding state adjustment module. The communication module is connected to the data processing module and is used to realize data interaction between the system and external devices; The grounding state adjustment module is connected to the data processing module and is used to adjust the grounding state according to the results of the data processing module. The power supply module is connected to the sensor module, data processing module, communication module and grounding status adjustment module respectively, and is used to supply power to the entire system.
[0007] The following are further optimizations and / or improvements to the above-mentioned technical solution: The aforementioned sensor module may include a distributed temperature sensor, a high-precision resistance measurement unit, and a non-contact current transformer. The distributed temperature sensor, high-precision resistance measurement unit, and non-contact current transformer are all connected to the data processing module to transmit the collected data to the data processing module.
[0008] The aforementioned grounding state adjustment module includes a redundant grounding loop switching unit and an adjustable graphite discharge gap, both of which are connected to the data processing module. The redundant grounding circuit switching unit is used to switch to the backup circuit when the main grounding circuit fails. Among them, the adjustable graphite discharge gap is used in energy discharge protection devices during overvoltage impacts.
[0009] It may also include a fault recording module, which is connected to the data processing module to generate and store grounding parameter change curves.
[0010] The aforementioned power module may include a solar panel and a supercapacitor. The solar panel and the supercapacitor are respectively connected to the data processing module through a charging management circuit to maintain system operation when the external power supply is interrupted.
[0011] A split-type sealed compartment structure can be adopted, including an independent control compartment and a wiring compartment; the control compartment integrates a data processing module, a communication module and a power supply module, and the wiring compartment is equipped with a grounding bar and cable connection terminals.
[0012] The aforementioned grounding busbar can be made of silver-plated copper alloy material, and the contact surface is provided with a nano-ceramic coating.
[0013] It may also include an adaptive adjustment module for adaptive adjustment based on grounding resistance, humidity, and temperature data collected by the sensor module.
[0014] The aforementioned data processing module can incorporate a grounding resistance prediction model based on an LSTM neural network to generate dynamic alarm thresholds and upload them to a cloud server.
[0015] One of the technical solutions of the present invention is achieved through the following measures: an intelligent grounding box, including a box body, and a cable intelligent grounding monitoring and control system is provided inside the box body, which is the cable intelligent grounding monitoring and control system described above.
[0016] This invention significantly improves the intelligence and reliability of cable grounding systems through multi-module collaborative design and innovative technology integration. Distributed temperature sensors, high-precision resistance measurement units, and non-contact current transformers enable real-time monitoring of multi-dimensional parameters. A redundant grounding loop switching unit and an adjustable graphite discharge gap constitute a dual-redundant safety protection system, automatically switching to the backup loop and discharging overvoltage energy through the graphite gap during a primary grounding fault. An adaptive adjustment module based on temperature, humidity, and grounding resistance thresholds can automatically trigger heating / dehumidification, cooling, or grounding switching, ensuring stable operation in complex environments. An LSTM neural network prediction model generates dynamic alarm thresholds and uploads them to the cloud. Combined with parameter change curves stored in the fault recording module, intelligent prediction and fault tracing are achieved. A dual-redundant power supply system combining solar panels and supercapacitors ensures continuous operation during external power outages. A split-type sealed chamber structure enhances protection and facilitates maintenance. Silver-plated copper alloy grounding bars and a nano-ceramic coating reduce resistance and enhance corrosion resistance. It also supports 4G / 5G / NB-IoT wireless communication and IEC 61850 standard, enabling remote data interaction and cloud management. Ultimately, through integrated smart grounding box, it significantly improves the safety, reliability and operation and maintenance efficiency of the power system. Attached Figure Description
[0017] Appendix Figure 1 This is a system structure block diagram according to an embodiment of the present invention.
[0018] Appendix Figure 2 This is a schematic diagram of the structure of the intelligent grounding box according to an embodiment of the present invention.
[0019] Appendix Figure 3 This is a schematic diagram of the control logic flow of the intelligent cable grounding monitoring and control system according to an embodiment of the present invention. Detailed Implementation
[0020] The present invention is not limited to the following embodiments, and the specific implementation can be determined according to the technical solution of the present invention and the actual situation.
[0021] The present invention will be further described below with reference to embodiments: Example 1: As shown in the attached document Figure 1 , 2As shown in Figure 3, the intelligent cable grounding monitoring and control system includes a sensor module, a data processing module, a communication module, a grounding status adjustment module, and a power supply module. The sensor module is connected to the data processing module to collect environmental and grounding parameters of the cable grounding box. The data processing module is connected to the sensor module, communication module, and grounding status adjustment module to process and analyze the data collected by the sensor module and send the processing results to the communication module and grounding status adjustment module. The communication module is connected to the data processing module to enable data interaction between the system and external devices. The grounding status adjustment module is connected to the data processing module to adjust the grounding status based on the results from the data processing module. The power supply module is connected to the sensor module, data processing module, communication module, and grounding status adjustment module to supply power to the entire system. The data processing module includes an embedded processor and signal modulation circuit; the communication module includes a wireless transmission unit supporting 4G / 5G / NB-IoT and compatible with the IEC 61850 protocol; and the grounding status adjustment module includes a thyristor switch group and a variable resistor. All modules are interconnected via a CAN bus. The system collects environmental parameters (such as temperature and humidity) every 5 minutes and measures the grounding resistance value every 30 seconds. When an anomaly is detected, the system triggers a protection action and records the fault information. Specifically, the sensor module connects to the data processing module via an RS485 interface, the communication module uses a SIM7600 4G module, and the grounding status adjustment module uses a stable non-metallic conductor material as the module's conductive medium. During data acquisition, environmental parameters (temperature and humidity) are collected every 5 minutes, and the grounding resistance value is measured every 30 seconds. The sensor module collects environmental parameters (such as temperature and humidity) and grounding parameters (such as grounding resistance) of the cable grounding box and transmits the collected data to the data processing module. The data processing module processes and analyzes this data, derives the processing results according to preset rules, and sends the results to the communication module and the grounding status adjustment module respectively. The communication module is responsible for transmitting the results from the data processing module to external devices to achieve data interaction. The grounding status adjustment module adjusts the cable grounding status accordingly based on the results from the data processing module. The power supply module provides stable power support to all modules within the system. Through the coordinated work of various modules, comprehensive monitoring and intelligent control of the cable grounding box are achieved. It can promptly detect and adjust grounding anomalies, improving the safety and reliability of the cable grounding system. At the same time, data can be transmitted to external devices through the communication module, facilitating remote monitoring and management.
[0022] In this embodiment of the invention, the sensor module includes distributed temperature sensors, a high-precision resistance measurement unit, and a non-contact current transformer. All three sensors are connected to the data processing module to transmit the collected data. Specifically, at least three distributed temperature sensors are used, with a measurement range of -40℃ to 120℃. The high-precision resistance measurement unit has a resolution of 0.1mΩ, and the non-contact current transformer has an accuracy class of 0.5S. The distributed temperature sensors are located at different positions in the cable grounding box to measure temperature information in real time. The high-precision resistance measurement unit accurately measures the grounding resistance. The non-contact current transformer measures the current without contacting the cable using the principle of electromagnetic induction. These sensors transmit their collected data to the data processing module. The multiple types of sensors can monitor the status of the cable grounding box from different angles, providing more comprehensive and accurate data. This helps the data processing module to more accurately analyze the cable grounding situation and promptly detect potential faults.
[0023] In this embodiment of the invention, the grounding state adjustment module includes a redundant grounding loop switching unit and an adjustable graphite discharge gap, both connected to the data processing module. The redundant grounding loop switching unit switches to the backup loop when the main grounding loop fails. The adjustable graphite discharge gap discharges energy to protect the device during overvoltage surges, and its adjustment range is 1-10mm. When the data processing module detects a fault in the main grounding loop, it sends a command to the redundant grounding loop switching unit, which switches the grounding connection from the main loop to the backup loop, ensuring grounding continuity. When an overvoltage surge occurs, the adjustable graphite discharge gap adjusts its gap distance according to the command from the data processing module, causing it to break down when the overvoltage reaches a certain value, forming a conductive path to discharge the energy generated by the overvoltage to the ground. The redundant grounding loop switching unit improves the reliability of the grounding system, allowing for rapid switching to the backup loop even if the main grounding loop fails, preventing safety accidents caused by grounding interruptions. Adjustable graphite discharge gaps can effectively protect cables and related electrical equipment from overvoltage damage and extend equipment lifespan.
[0024] In this embodiment of the invention, the intelligent cable grounding monitoring and control system further includes a fault recording module. This module is connected to the data processing module and is used to generate and store grounding parameter change curves, capable of storing grounding parameter change curves for the most recent 30 days. The fault recording module receives grounding parameter data processed by the data processing module, records these parameters in chronological order, and generates corresponding change curves for storage. By storing the grounding parameter change curves, maintenance personnel can easily analyze the historical operation of the cable grounding system, quickly pinpoint the time and cause of faults, and provide a strong basis for fault diagnosis and system improvement.
[0025] In this embodiment of the invention, the power module includes a solar panel and a supercapacitor. The solar panel and supercapacitor are connected to a data processing module via a charging management circuit to maintain system operation during external power outages. When there is sunlight, the solar panel converts solar energy into electrical energy, charging the supercapacitor through the charging management circuit and simultaneously supplying power to the system. When the external power supply is interrupted, the supercapacitor provides power to various modules within the system through the charging management circuit, maintaining normal system operation. The combination of the solar panel and supercapacitor provides a reliable backup power solution, enhancing the stability and reliability of the system under abnormal external power conditions and reducing the risk of monitoring and control interruptions due to power outages.
[0026] In this embodiment of the invention, the intelligent cable grounding monitoring and control system adopts a split-type sealed compartment structure, including an independent control compartment and a wiring compartment. The control compartment integrates a data processing module, a communication module, and a power supply module, while the wiring compartment is equipped with a grounding bar and cable connection terminals. In this split-type sealed compartment design, the control compartment and the wiring compartment are independently isolated, which improves the system's reliability and safety. Different functional parts of the system are placed in the control compartment and the wiring compartment respectively. The control compartment is responsible for data processing, communication, and power supply management, while the wiring compartment is responsible for cable connection and grounding. The two compartments are independent of each other, and the sealed structure prevents external dust, moisture, etc., from entering, ensuring the normal operation of each module. The split-type sealed compartment structure improves the system's protective performance, avoiding damage to the modules caused by external environmental factors. At the same time, separating the different functional modules facilitates system installation, maintenance, and repair, improving work efficiency.
[0027] In this embodiment of the invention, the grounding busbar is made of silver-plated copper alloy material, and the contact surface is coated with a nano-ceramic coating. Using a silver-plated copper alloy grounding busbar with a nano-ceramic coating on the contact surface improves grounding reliability and corrosion resistance. The silver-plated copper alloy material has good conductivity and corrosion resistance, effectively reducing grounding resistance and ensuring grounding effectiveness. The nano-ceramic coating has good insulation and wear resistance; when applied to the contact surface of the grounding busbar, it prevents oxidation and wear, maintaining good contact performance. The combination of the silver-plated copper alloy material and the nano-ceramic coating improves the conductivity and service life of the grounding busbar, reduces grounding problems caused by grounding busbar failures, and further enhances the reliability of the cable grounding system.
[0028] In this embodiment of the invention, the intelligent cable grounding monitoring and control system further includes an adaptive adjustment module, used for adaptive adjustment based on grounding resistance, humidity, and temperature data collected by the sensor module. The adaptive adjustment module receives the grounding resistance, humidity, and temperature data collected by the sensor module and analyzes and judges these data according to preset rules. When the grounding resistance, humidity, or temperature exceeds or falls below a set threshold, the adaptive adjustment module automatically triggers corresponding adjustment actions, such as adjusting the grounding state or activating a dehumidification or cooling device. Specifically, when the contact resistance between the cable and the grounding copper busbar is detected to be >200mΩ, the backup grounding circuit is automatically switched; when the humidity is >85%RH, the internal heating and dehumidification device is activated; and when the temperature is greater than 80°C, the cooling device is activated. The adaptive adjustment module can automatically adjust according to the actual operating environment and parameter changes, ensuring that the cable grounding system always maintains its optimal operating state, thus improving the system's intelligence level and ability to cope with complex environments.
[0029] In this embodiment of the invention, the data processing module incorporates a grounding resistance prediction model based on an LSTM neural network to generate dynamic alarm thresholds and upload them to a cloud server. During data analysis, the LSTM neural network model analyzes the collected data to predict the trend of grounding resistance changes. When three consecutive measurements exceed the set threshold, a protection action is triggered; when the humidity is >85%RH, the internal heating and dehumidification device is activated. A daily operational status report is automatically uploaded to the cloud server at 00:00, supporting remote monitoring and maintenance. This invention uses an intelligent diagnostic algorithm based on an LSTM neural network to record and memorize the resistance, temperature, and humidity parameters of each cable (training data includes temperature, humidity, and historical resistance values), and sets a dynamic threshold alarm mechanism. In case of an anomaly, a local audible and visual alarm is triggered, and a remote alarm is sent. The data processing module inputs historical grounding resistance data into the LSTM neural network-based grounding resistance prediction model. The model learns and analyzes this data to predict future grounding resistance trends and generates dynamic alarm thresholds based on the prediction results. The generated dynamic alarm thresholds are uploaded to the cloud server via the communication module. The LSTM neural network-based prediction model can more accurately predict changes in grounding resistance, and the dynamic alarm threshold can be adjusted in real time according to actual conditions, improving the accuracy and timeliness of alarms. Uploading the alarm threshold to a cloud server facilitates remote monitoring and management, realizing intelligent early warning for cable grounding systems.
[0030] Example 2: As shown in the attached document Figure 1 , 2 As shown in Figure 3, this embodiment provides an intelligent grounding box, including a box body. An intelligent cable grounding monitoring and control system is installed inside the box body. This intelligent cable grounding monitoring and control system is the one described above. The box body provides physical protection and installation space for the internal intelligent cable grounding monitoring and control system. The box body has an IP65 protection rating to prevent dust and water ingress; the control circuit board is coated with conformal coating to meet the GB / T2423.10 vibration test standard. The intelligent cable grounding monitoring and control system operates according to the working principle described in the above claims, monitoring, controlling, and adjusting the cable grounding status. The intelligent grounding box integrates the intelligent cable grounding monitoring and control system into a single enclosure, facilitating installation and use. By adopting the aforementioned advanced monitoring and control technologies, the safety, reliability, and intelligence level of the cable grounding system are improved, providing a strong guarantee for the stable operation of the cable.
[0031] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the needs of different situations.
Claims
1. A cable intelligent grounding monitoring and control system, characterized in that... It includes a sensor module, a data processing module, a communication module, a grounding status adjustment module, and a power supply module; The sensor module is connected to the data processing module and is used to collect environmental and grounding parameters of the cable grounding box. The data processing module is connected to the sensor module, the communication module and the grounding state adjustment module respectively. It is used to process and analyze the data collected by the sensor module and send the processing results to the communication module and the grounding state adjustment module. The communication module is connected to the data processing module and is used to realize data interaction between the system and external devices; The grounding state adjustment module is connected to the data processing module and is used to adjust the grounding state according to the results of the data processing module. The power supply module is connected to the sensor module, data processing module, communication module and grounding status adjustment module respectively, and is used to supply power to the entire system.
2. The intelligent cable grounding monitoring and control system according to claim 1, characterized in that... The sensor module includes a distributed temperature sensor, a high-precision resistance measurement unit, and a non-contact current transformer. The distributed temperature sensor, high-precision resistance measurement unit, and non-contact current transformer are all connected to the data processing module to transmit the collected data to the data processing module.
3. The intelligent cable grounding monitoring and control system according to claim 1, characterized in that... The grounding status adjustment module includes a redundant grounding loop switching unit and an adjustable graphite discharge gap, both of which are connected to the data processing module. The redundant grounding circuit switching unit is used to switch to the backup circuit when the main grounding circuit fails. Among them, the adjustable graphite discharge gap is used in energy discharge protection devices during overvoltage impacts.
4. The intelligent cable grounding monitoring and control system according to claim 1, 2, or 3, characterized in that... It also includes a fault recording module, which is connected to the data processing module and is used to generate and store grounding parameter change curves.
5. The intelligent cable grounding monitoring and control system according to claim 1, 2, or 3, characterized in that... The power module includes a solar panel and a supercapacitor. The solar panel and the supercapacitor are connected to the data processing module through a charging management circuit to maintain system operation when the external power supply is interrupted.
6. The intelligent cable grounding monitoring and control system according to claim 1, 2, or 3, characterized in that... It adopts a split-type sealed compartment structure, including an independent control compartment and a wiring compartment; the control compartment integrates a data processing module, a communication module and a power supply module, and the wiring compartment is equipped with a grounding bar and cable connection terminals.
7. The intelligent cable grounding monitoring and control system according to claim 6, characterized in that... The grounding busbar is made of silver-plated copper alloy material, and the contact surface is coated with a nano-ceramic coating.
8. The intelligent cable grounding monitoring and control system according to claim 1, 2, 3, or 7, characterized in that... It also includes an adaptive adjustment module, which is used to make adaptive adjustments based on the grounding resistance, humidity, and temperature data collected by the sensor module.
9. The intelligent cable grounding monitoring and control system according to claim 1, 2, 3, or 7, characterized in that... The data processing module has a built-in grounding resistance prediction model based on LSTM neural network, which is used to generate dynamic alarm thresholds and upload them to the cloud server.
10. An intelligent grounding box, characterized in that... The device includes a housing, and a cable intelligent grounding monitoring and control system is provided inside the housing. The cable intelligent grounding monitoring and control system is the cable intelligent grounding monitoring and control system as described in any one of claims 1 to 9.