Insulation temperature sensing monitoring device for crosslinked polyethylene power cable

Abstract

A crosslinked polyethylene power cable insulation temperature sensing monitoring device disclosed by the present invention comprises a temperature sensing monitoring device and an intelligent early warning system, the intelligent early warning system is installed in the temperature sensing monitoring device, and the temperature sensing monitoring device is electrically connected with a composite sensor assembly. A wireless data transmission module used for data transmission is arranged in the temperature sensing monitoring device, and a self-powered system used for power supply is further arranged in the temperature sensing monitoring device. The invention relates to the technical field of insulation monitoring, in particular to an efficient and stable cross-linked polyethylene power cable insulation temperature sensing monitoring device which can comprehensively monitor the insulation state and temperature of a cable in real time and perform intelligent early warning and wireless data transmission functions at the same time, so that maintenance and management are more convenient and efficient. And the safety and reliability of power cable insulation monitoring are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of insulation monitoring, and in particular relates to a temperature sensing monitoring device for insulation of a cross-linked polyethylene power cable. Background Art

[0002] Cross-linked polyethylene (XLPE) power cables are widely used in high-voltage and ultra-high-voltage power transmission due to their excellent insulation performance and heat resistance. With the continuous development of power systems and the increase in cable operation time, the insulation material may reduce its performance due to factors such as temperature increase, moisture, and aging, which in turn affects the safety and reliability of the cable. Therefore, real-time monitoring of the insulation status and temperature changes of the cable is of great significance for preventing failures and extending the service life of the cable. Existing monitoring devices usually use a single temperature sensor, lack a comprehensive evaluation of insulation performance, and are difficult to achieve real-time and comprehensive monitoring of power cables. At the same time, traditional monitoring systems often require manual regular inspections and cannot meet the needs of modern power systems for automation and intelligence. Therefore, improvements need to be made to existing problems. Summary of the invention

[0003] In view of the above situation, in order to remedy the above-mentioned existing defects, the present invention provides a cross-linked polyethylene power cable insulation temperature monitoring device, which can realize real-time and comprehensive monitoring of the cable insulation status and temperature, and at the same time perform intelligent early warning and wireless data transmission functions, making maintenance and management more convenient and efficient, and improving the safety and reliability of power cable insulation temperature monitoring.

[0004] The technical solution adopted by the present invention is as follows: A cross-linked polyethylene power cable insulation temperature sensing monitoring device proposed in the present invention includes a temperature sensing monitoring device and an intelligent early warning system, wherein the intelligent early warning system is installed in the temperature sensing monitoring device, the temperature sensing monitoring device is electrically connected to a composite sensor assembly, and the temperature sensing monitoring device is equipped with a built-in wireless data transmission module for data transmission.

[0005] Wherein, the temperature sensing monitoring device also has a built-in self-power supply system for power supply.

[0006] Furthermore, the composite sensor assembly integrates a temperature sensor and an insulation resistance sensor. The temperature sensor adopts a high-precision thermistor to quickly and accurately sense the temperature change of the insulation layer of the cross-linked polyethylene power cable; the insulation resistance sensor is used to measure the insulation resistance value of the cross-linked polyethylene power cable by applying a test voltage to the surface of the cross-linked polyethylene power cable.

[0007] Furthermore, the wireless data transmission module adopts low-power wide area network LPWAN and LoRa wireless communication technology to ensure stable data transmission in the working environment of the power cable and reduce signal interference; the wireless data transmission module also has a built-in digital encryption algorithm to ensure the security and integrity of data transmission and prevent information leakage and tampering.

[0008] Furthermore, the temperature sensing monitoring device is wirelessly and remotely connected to a cloud operating platform, through which users can conveniently perform centralized management of data and view real-time monitoring status.

[0009] Furthermore, the self-powered system has a thermoelectric module and a photoelectric module, and the cooperation of the thermoelectric module and the photoelectric module can convert the heat and light energy around the cable into electrical energy, so as to provide self-power for the temperature sensing monitoring device.

[0010] Furthermore, the intelligent early warning system can facilitate users to set safety thresholds of temperature and insulation resistance according to the specific conditions of the monitored cable, so that the device automatically triggers an alarm when it exceeds the safety range, prompting maintenance personnel to deal with it in time; the intelligent early warning system has a multi-level early warning function, which can send alarms to maintenance personnel through different methods such as mobile phone APP and text messages, ensuring timely response and reducing the probability of accidents.

[0011] The beneficial effects achieved by the present invention using the above structure are as follows: The advantages of the cross-linked polyethylene power cable insulation temperature sensing monitoring device of the present invention are:

[0012] The present invention integrates temperature and insulation resistance sensors, which can comprehensively and in real time monitor the operating status of the cross-linked polyethylene power cable and improve monitoring efficiency. The present invention adopts high-precision thermistors to ensure rapid and accurate perception of temperature changes and improve monitoring reliability. The wireless data transmission module adopts low-power wide area network LPWAN and LoRa wireless communication technology to ensure the stability of data transmission in complex environments and reduce signal interference. The wireless data transmission module has a built-in digital encryption algorithm to ensure the security and integrity of data transmission and effectively prevent information leakage and tampering. The present invention connects the cloud operation platform wirelessly, so that users can conveniently perform centralized data management and real-time monitoring to improve management efficiency. The self-powered system is combined with thermoelectric and photoelectric modules to convert environmental heat and light energy into electrical energy to ensure long-term stable operation of the monitoring device. The intelligent early warning system can facilitate users to set safety thresholds of temperature and insulation resistance according to specific circumstances, enhance pertinence and flexibility, and support multiple alarm methods such as mobile phone APP and text messages to ensure that maintenance personnel can respond in time, reduce the probability of accidents, enhance safety, and reduce potential risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the working process of the temperature sensing monitoring device for insulation of a cross-linked polyethylene power cable of the present invention;

[0015] Figure 2 A schematic diagram of the working process of the cloud operation platform of the cross-linked polyethylene power cable insulation temperature sensing monitoring device of the present invention;

[0016] Figure 3 It is a schematic diagram of the working process of the self-power supply system of the cross-linked polyethylene power cable insulation temperature sensing monitoring device of the present invention;

[0017] Figure 4 The present invention is a schematic diagram of the working process of the intelligent early warning system of the insulation temperature sensing monitoring device of the cross-linked polyethylene power cable. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0020] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the technical solution adopted by the present invention is as follows: a temperature sensing monitoring device for insulation of a cross-linked polyethylene power cable proposed in the present invention includes a temperature sensing monitoring device and an intelligent early warning system, wherein the intelligent early warning system is installed in the temperature sensing monitoring device, the temperature sensing monitoring device is electrically connected to a composite sensor assembly, the temperature sensing monitoring device is built-in with a wireless data transmission module for data transmission, wherein the temperature sensing monitoring device is also built-in with a self-power supply system for power supply, the self-power supply system has a thermoelectric module and a photoelectric module, and the heat and light energy around the cable can be converted into electrical energy through the cooperation of the thermoelectric module and the photoelectric module, so as to self-power the temperature sensing monitoring device; the composite sensor assembly is integrated with a temperature sensor and an insulation resistance sensor, the temperature sensor adopts a high-precision thermistor, which is used to quickly and accurately sense the temperature change of the insulation layer of the cross-linked polyethylene power cable; the insulation resistance sensor is used to measure the insulation resistance value of the cross-linked polyethylene power cable by applying a test voltage to the surface of the cross-linked polyethylene power cable.

[0021] The wireless data transmission module adopts low-power wide area network LPWAN and LoRa wireless communication technology to ensure stable data transmission in the working environment of power cables and reduce signal interference. The wireless data transmission module also has a built-in digital encryption algorithm to ensure the security and integrity of data transmission and prevent information leakage and tampering.

[0022] The temperature sensing monitoring device is wirelessly and remotely connected to a cloud operating platform, through which users can conveniently conduct centralized data management and view real-time monitoring status.

[0023] The intelligent early warning system allows users to set safety thresholds for temperature and insulation resistance based on the specific conditions of the monitored cables, so that the device automatically triggers an alarm when it exceeds the safety range, prompting maintenance personnel to handle it in a timely manner; the intelligent early warning system has its own multi-level early warning function, which can send alarms to maintenance personnel through mobile phone APP and text messages to ensure timely response and reduce the probability of accidents.

[0024] When in use, the temperature sensing monitoring device is installed at the measurement and monitoring location of the cross-linked polyethylene power cable to ensure that the composite sensor assembly is well connected to the power cable. The temperature and insulation resistance value of the power cable are monitored in real time through the composite sensor assembly in the temperature sensing monitoring device, and the monitoring data is sent to the cloud operation platform through the low-power wide area network LPWAN and LoRa technology through the wireless data transmission module. Users can view real-time monitoring data at any time through the cloud operation platform for centralized management. Users can set the safety thresholds of temperature and insulation resistance through the device interface or cloud operation platform. According to the specific use environment and requirements of the cable, adjust the appropriate warning parameters. When the power cable is detected and monitored, once the set safety threshold is triggered, the intelligent early warning system will automatically trigger an alarm. When the temperature or insulation resistance exceeds the set safety range, the intelligent early warning system will notify the maintenance personnel through the mobile phone APP or SMS to ensure timely response, so that the maintenance personnel can check and handle the status of the cable in time after receiving the alarm to ensure the safety and stable operation of the power system.

[0025] When the device is in use, the self-powered system ensures the normal operation of the thermoelectric module and the photovoltaic module, and can convert the surrounding heat and light energy into electrical energy to power the device.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, material or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, material or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature-sensing monitoring device for insulation of a cross-linked polyethylene power cable, comprising a temperature-sensing monitoring device and an intelligent early warning system, wherein the intelligent early warning system is installed in the temperature-sensing monitoring device, the temperature-sensing monitoring device is electrically connected to a composite sensor assembly, the temperature-sensing monitoring device is built-in with a wireless data transmission module for data transmission, the temperature-sensing monitoring device is also built-in with a self-power supply system for power supply, the composite sensor assembly integrates a temperature sensor and an insulation resistance sensor, the temperature sensor adopts a high-precision thermistor, and is used to quickly and accurately sense the temperature change of the insulation layer of the cross-linked polyethylene power cable; the insulation resistance sensor is used to measure the insulation resistance value of the cross-linked polyethylene power cable by applying a test voltage to the surface of the cross-linked polyethylene power cable.

2. A cross-linked polyethylene power cable insulation temperature sensing monitoring device according to claim 1, characterized in that: The wireless data transmission module adopts low power wide area network LPWAN and LoRa wireless communication technology to ensure stable data transmission in the working environment of the power cable and reduce signal interference.

3. A cross-linked polyethylene power cable insulation temperature sensing monitoring device according to claim 2, characterized in that: The wireless data transmission module also has a built-in digital encryption algorithm to ensure the security and integrity of data transmission and prevent information leakage and tampering.

4. A cross-linked polyethylene power cable insulation temperature sensing monitoring device according to claim 3, characterized in that: The temperature sensing monitoring device is wirelessly and remotely connected to a cloud operating platform, which can facilitate users to centrally manage data and view real-time monitoring status through the cloud operating platform.

5. A cross-linked polyethylene power cable insulation temperature sensing monitoring device according to claim 4, characterized in that: The self-powered system has a thermoelectric module and a photoelectric module. The cooperation of the thermoelectric module and the photoelectric module can convert the heat and light energy around the cable into electrical energy to provide self-power for the temperature sensing monitoring device.

6. A cross-linked polyethylene power cable insulation temperature sensing monitoring device according to claim 5, characterized in that: The intelligent early warning system can facilitate users to set safety thresholds of temperature and insulation resistance according to the specific conditions of the monitored cables, so that the device automatically triggers an alarm when it exceeds the safety range, prompting maintenance personnel to handle it in time.

7. A cross-linked polyethylene power cable insulation temperature sensing monitoring device according to claim 6, characterized in that: The intelligent early warning system has a multi-level early warning function and can send alarms to maintenance personnel through mobile phone APP and text messages.

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