Insulation fault positioning system of low-voltage power distribution cabinet

Abstract

The utility model discloses an insulation fault positioning system for a low-voltage power distribution cabinet. The system comprises a signal acquisition module which is used for monitoring insulation condition data of a plurality of nodes included in an electrical loop of the low-voltage power distribution cabinet in real time; the wireless transmission module is connected with the signal acquisition module and is used for transmitting the insulation condition data in real time; the signal processing module is connected with the wireless transmission module and used for receiving the insulation condition data transmitted by the wireless transmission module and detecting abnormal data in the insulation condition data; and the insulation fault positioning module is connected with the signal processing module and is used for positioning fault position information of the insulation fault in the electrical loop according to the abnormal data. According to the utility model, the technical problems of low detection efficiency and low detection accuracy caused by polling the insulation fault of the low-voltage power distribution cabinet based on a manual troubleshooting mode in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the field of low - voltage power distribution, and more specifically, to a low - voltage power distribution cabinet insulation fault location system. Background Art

[0002] A low - voltage power distribution cabinet is a device used to distribute the electric energy of a high - voltage power system to low - voltage circuits, usually installed in places such as buildings, factories, and commercial sites. During use, it is necessary to insulate the circuits inside the low - voltage power distribution cabinet to avoid endangering the safety of nearby personnel. At the same time, when there is a fault in the insulation treatment in the electrical circuit, it is necessary to troubleshoot the fault point and repair the insulation fault as soon as possible.

[0003] In the related art, the insulation fault location of the electrical circuit in the low - voltage power distribution cabinet is mainly carried out by manual inspection, which has the problems of low detection efficiency and low accuracy.

[0004] In view of the above problems, no effective solution has been proposed yet. Summary of the Utility Model

[0005] An embodiment of the utility model provides a low - voltage power distribution cabinet insulation fault location system to at least solve the technical problems of low detection efficiency and low detection accuracy caused by the manual inspection of the insulation fault of the low - voltage power distribution cabinet in the related art.

[0006] According to one aspect of the embodiment of the utility model, a low - voltage power distribution cabinet insulation fault location system is provided, including: a signal acquisition module for real - time monitoring the insulation condition data of a plurality of nodes included in the electrical circuit of the low - voltage power distribution cabinet; a wireless transmission module connected to the signal acquisition module for real - time transmitting the insulation condition data; a signal processing module connected to the wireless transmission module for receiving the insulation condition data transmitted by the wireless transmission module and detecting abnormal data in the insulation condition data; an insulation fault location module connected to the signal processing module for locating the fault location information of the insulation fault in the electrical circuit according to the abnormal data.

[0007] Optionally, the signal acquisition module includes a plurality of insulation monitors, where the plurality of insulation monitors are connected to the plurality of nodes in one - to - one correspondence for real - time monitoring the insulation condition data of the corresponding nodes.

[0008] Optionally, the low - voltage power distribution cabinet insulation fault location system further includes a remote monitoring module, where the remote monitoring module is connected to the insulation fault location module for receiving the fault location information and displaying the fault location information.

[0009] Optionally, the remote monitoring module includes a network transmission unit and a monitoring display terminal. Among them, the network transmission unit is connected to the insulation fault location module and is used to send the fault location information to the monitoring display terminal through the network; the monitoring display terminal is connected to the network transmission unit and is used to display the fault location information.

[0010] Optionally, the low-voltage power distribution cabinet insulation fault location system further includes a mobile terminal device. Among them, the mobile terminal device is connected to the insulation fault location module and is used to receive the fault location information and display the fault location information.

[0011] Optionally, the low-voltage power distribution cabinet insulation fault location system further includes a plurality of alarm devices. Among them, the plurality of alarm devices are respectively and correspondingly connected to the plurality of nodes and are connected to the insulation fault location module, and are respectively used to trigger a fault alarm based on the fault location signal sent by the insulation fault location module.

[0012] Optionally, the plurality of alarm devices are respectively sound and light alarm devices.

[0013] Optionally, the low-voltage power distribution cabinet insulation fault location system further includes a plurality of fault isolators. Among them, the plurality of fault isolators are respectively and correspondingly connected to the plurality of nodes and are connected to the insulation fault location module, and are respectively used to trigger fault isolation based on the fault location signal sent by the insulation fault location module, so that the corresponding node is disconnected from the electrical circuit.

[0014] Optionally, the wireless transmission module adopts the low-power Bluetooth protocol.

[0015] Optionally, the low-voltage power distribution cabinet insulation fault location system further includes a plurality of temperature sensors, a plurality of humidity sensors, and a plurality of gas detectors. Among them, the plurality of temperature sensors are connected to the plurality of nodes in a one-to-one correspondence and are connected to the signal processing module, and are used to collect the temperature information at the corresponding node positions and send the collected temperature information to the signal processing module; the plurality of humidity sensors are connected to the plurality of nodes in a one-to-one correspondence and are connected to the signal processing module, and are used to collect the humidity information at the corresponding node positions and send the collected humidity information to the signal processing module; the plurality of gas detectors are connected to the plurality of nodes in a one-to-one correspondence and are connected to the signal processing module, and are used to collect the gas information at the corresponding node positions and send the collected gas information to the signal processing module; the signal processing module is further used to identify abnormal temperatures in the received temperature information, identify abnormal humidities in the received humidity information, and identify abnormal gases in the received gas information; the signal processing module is further connected to the remote monitoring module and is used to send the abnormal temperature, the abnormal temperature, and the abnormal gas to the remote monitoring module; the remote monitoring module is further used to display the abnormal temperature, the abnormal temperature, and the abnormal gas.

[0016] In the embodiment of the present invention, by setting a signal acquisition module for real-time monitoring of the insulation condition data of a plurality of nodes included in the electrical circuit of the low-voltage power distribution cabinet; a wireless transmission module connected to the signal acquisition module for real-time transmission of the insulation condition data; a signal processing module connected to the wireless transmission module for receiving the insulation condition data transmitted by the wireless transmission module and detecting abnormal data in the insulation condition data; an insulation fault location module connected to the signal processing module for positioning the fault location information of the insulation fault in the electrical circuit according to the abnormal data, the purpose of accurately positioning the fault location in the electrical circuit in real time based on the insulation condition data collected by the signal acquisition module is achieved, thereby realizing the technical effect of improving the insulation fault detection efficiency and detection accuracy of the low-voltage power distribution cabinet, and further solving the technical problem of low detection efficiency and detection accuracy caused by the manual inspection method for the insulation fault of the low-voltage power distribution cabinet in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0018] Figure 1 It is a connection diagram of electronic components in a low-voltage power distribution cabinet insulation fault location system according to an embodiment of the present invention;

[0019] Figure 2 It is a distribution diagram of insulation fault location modules in a low - voltage power distribution cabinet insulation fault location system according to an embodiment of the present utility model;

[0020] Figure 3 It is a connection diagram of electronic components of an optional low - voltage power distribution cabinet insulation fault location system according to an embodiment of the present utility model.

[0021] Among them, the above - mentioned drawings include the following reference numerals:

[0022] 1. Signal acquisition module; 101. Insulation monitor; 2. Wireless transmission module; 3. Signal processing module; 4. Insulation fault location module; 5. Remote monitoring module; 501. Network transmission unit; 502. Monitoring and display terminal; 6. Mobile terminal device; 7. Alarm device; 8. Fault disconnector; 9. Temperature sensor; 10. Humidity sensor; 11. Gas detector. Detailed implementation manners

[0023] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] First, for the convenience of understanding the embodiments of the present utility model, some terms or nouns involved in the present utility model will be explained below:

[0025] A low - voltage power distribution cabinet is a device used to distribute the electric energy of a high - voltage power system to a low - voltage circuit, usually installed in places such as buildings, factories, and commercial sites. A low - voltage power distribution cabinet usually includes electrical components such as circuit breakers, contactors, relays, and current transformers, and can protect, control, and distribute electric power. It can step down the electric energy of a high - voltage power system to a safe and reliable low - voltage circuit for various devices and facilities to use.

[0026] An insulation monitor is a device used to monitor the insulation status of electrical equipment. It can detect whether there are problems such as electric leakage or insulation breakdown in the equipment insulation, discover and alarm in time to ensure the safe operation of the equipment. An insulation monitor usually uses highly sensitive sensors and advanced monitoring technologies to monitor the insulation status of the equipment in real time and provide accurate data and alarm information.

[0027] An audible and visual alarm is a device used to emit sound and light signals to alert people's attention. It usually consists of an alarm and a flash lamp. When an emergency occurs, the alarm will emit a loud sound, and at the same time, the flash lamp will emit strong light to attract people's attention and remind them to take necessary actions.

[0028] As Figure 1 shown, Figure 1 is the connection diagram of electronic components in an insulation fault location system of a low-voltage power distribution cabinet according to an embodiment of the present invention; an embodiment of the present invention provides an insulation fault location system for a low-voltage power distribution cabinet, and the insulation fault location system for a low-voltage power distribution cabinet includes: a signal acquisition module 1, configured to monitor in real time insulation condition data of a plurality of nodes included in an electrical circuit of the low-voltage power distribution cabinet; a wireless transmission module 2, connected to the signal acquisition module 1, configured to transmit the insulation condition data in real time; a signal processing module 3, connected to the wireless transmission module 2, configured to receive the insulation condition data transmitted by the wireless transmission module 2 and detect abnormal data in the insulation condition data; an insulation fault location module 4, connected to the signal processing module 3, configured to locate fault location information of an insulation fault occurring in the electrical circuit according to the abnormal data.

[0029] Based on the connection relationship, the signal acquisition module 1 performs real-time acquisition of insulation condition data of a plurality of nodes in the electrical circuit. The signal acquisition module 1 can not only acquire insulation condition data, but also include a high-precision locator, and acquire the positions at a plurality of nodes through the high-precision locator. A satellite positioning system (Global Positioning System, GPS), a Beidou positioning system or an indoor positioning system can be embedded in the high-precision locator. The position information acquired by the above high-precision locator is corresponded one by one with the acquired insulation condition information, and is transmitted to the signal processing module 3 through the wireless transmission module 2.

[0030] Optionally, the wireless transmission module 2 can adopt Bluetooth, Wireless Fidelity (Wi-Fi), ZigBee wireless communication protocol, LoRa wide area network technology or other wireless transmission technologies. When the distance between the signal acquisition module 1 and the signal processing module 3 is relatively far (greater than a preset distance range), ZigBee technology or LoRa transmission technology is used. When the distance between the signal acquisition module 1 and the signal processing module 3 is relatively close (less than or equal to the preset distance range), Bluetooth or Wi-Fi is used for transmission.

[0031] Optionally, the signal processing module 3 can be a processor with a comparison function or a comparator device, which identifies abnormal data from the insulation condition data received through the signal processing module 3. The abnormal data is data where the insulation condition data exceeds a preset insulation range. The comparator device can be an oscilloscope or a signal analyzer. Specifically, the oscilloscope and the signal analyzer receive the insulation condition data in the form of signals, analyze the received signals, and search for abnormal signal points, thereby indirectly locating the insulation fault and obtaining the abnormal data.

[0032] Optionally, as Figure 2 shown, Figure 2 is a distribution diagram of the insulation fault location module 4 in a low-voltage power distribution cabinet insulation fault location system according to an embodiment of the present invention. Among them, the insulation fault location module 4 is indirectly connected to the electrical circuit node through the signal processing module 3, the wireless transmission module 2, and the signal acquisition module 1. Each electrical circuit node is connected to multiple loads, and is used for the low-voltage power distribution cabinet to transmit power to the loads through the electrical circuit nodes for the loads to use.

[0033] Optionally, the insulation fault location module 4 determines the node position corresponding to the insulation abnormal state according to the abnormal data and the position information collected by the high-precision locator corresponding to the abnormal data one by one, so that the staff can quickly find the node in the insulation abnormal state and perform maintenance. At this time, the position of the node is found. The staff can conduct an electrical circuit inspection based on the node position to find the corresponding faulty circuit, thereby effectively saving the time for the staff to find the fault and effectively improving the search efficiency.

[0034] Optionally, the insulation fault location module 4 can also preset an insulation fault location method and determine the fault location information of the insulation fault based on the insulation location method. Specifically, when the signal processing module 3 determines the abnormal data, it simultaneously sends the abnormal data and the position information of the corresponding node to the insulation fault location module 4. The insulation fault location module 4 determines the specific insulation fault location (fault location information) according to the position information through the preset insulation fault location method, and determines the fault type according to the abnormal data, and sends the specific fault location information to the maintenance personnel. The maintenance personnel perform maintenance operations according to the insulation fault location information. This real-time monitoring method helps to take intervention measures before the insulation fault develops into a serious accident, ensuring the long-term stable operation of the power distribution cabinet.

[0035] Optionally, the insulation fault location module 4 can also adopt the high-frequency signal injection method, which can quickly and accurately locate the fault point. This not only improves the efficiency of fault troubleshooting but also reduces the losses caused by misjudgment or missed judgment. Among them, the high-frequency signal injection method means injecting the collected abnormal information into the insulation fault location module 4 in the form of high-frequency signals to test the performance and stability of the high-frequency signals. This injection method can help maintenance personnel discover the fault location information in the electrical circuit.

[0036] It should be noted that the signal acquisition module 1 can adopt any processor with a comparison function to compare the insulation condition data and the preset insulation range. The insulation fault location method and the high-frequency signal injection method can both be embedded in the insulation fault location module 4. Among them, the insulation fault location method and the high-frequency signal injection method are both existing technologies and there is no improvement in software methods.

[0037] As Figure 1 shown, the signal acquisition module 1 includes a plurality of insulation monitors 101, where the plurality of insulation monitors 101 are respectively connected to a plurality of nodes in one-to-one correspondence for real-time monitoring of the insulation condition data of the corresponding nodes.

[0038] With the above structure, the insulation monitor 101 can monitor the insulation state in the electrical circuit. At the same time, it can also detect whether there are phenomena such as leakage or insulation breakdown in the insulation of the electrical circuit, and timely transmit the detected insulation state data to the signal processing module 3 to ensure the safe operation of the low-voltage power distribution cabinet. The insulation monitor 101 can adopt highly sensitive sensors or monitoring technologies to be able to monitor the insulation state of the equipment in real time, timely eliminate potential leakage safety hazards, and ensure the safety of the low-voltage power distribution cabinet and the surrounding personnel.

[0039] Optionally, by using the plurality of insulation monitors 101 in the above signal acquisition module 1, the maintenance cycle of the low-voltage power distribution cabinet can be greatly shortened, changing from traditional regular inspections to real-time monitoring, so that faults can be discovered and processed in a timely manner at the initial stage of the fault, avoiding power outages and equipment damage caused by insulation faults, and significantly improving the operation efficiency and safety of the power system.

[0040] As Figure 1 shown, the low-voltage power distribution cabinet insulation fault location system further includes a remote monitoring module 5, where the remote monitoring module 5 is connected to the insulation fault location module 4 for receiving the fault location information and displaying the fault location information.

[0041] With the above structure, the insulation fault location module 4 has a remote monitoring function, that is, it includes a remote monitoring module 5. Staff can remotely view the insulation status and related data of the low-voltage power distribution cabinet through the Internet or a dedicated network. The above remote monitoring method not only improves work efficiency but also effectively reduces the work intensity and safety risks of operation and maintenance personnel.

[0042] Optionally, the remote monitoring module 5 can significantly improve the management efficiency of the electrical circuits in the low-voltage power distribution cabinet. Especially in large and complex electrical circuits, managers can view the insulation fault conditions at each node in the electrical circuit in real time through the remote monitoring module 5 without having to check each one on-site, and can promptly dispatch staff for fault handling, reducing waste of human resources and at the same time improving the speed of fault response. In occasions where the electrical circuit needs to be monitored continuously for 24 hours, such as large shopping malls or hospitals, there are many people and they are scattered in various locations of the venue. If there is an insulation fault in the low-voltage power distribution cabinet, it will pose a danger to personnel safety. The remote monitoring module 5 can promptly view the abnormal data and fault location information and perform maintenance in a timely manner, playing an irreplaceable role.

[0043] As Figure 1 shown, the remote monitoring module 5 includes a network transmission unit 501 and a monitoring display terminal 502. Among them, the network transmission unit 501 is connected to the insulation fault location module 4 and is used to send the fault location information to the monitoring display terminal 502 through the network; the monitoring display terminal 502 is connected to the network transmission unit 501 and is used to display the fault location information.

[0044] With the above structure, the network transmission unit 501 establishes a connection with the insulation fault location module 4 and is responsible for transmitting the fault location information to the monitoring display terminal 502 through the Internet or a local area network. The monitoring display terminal 502 can be a large display installed in the control room or an application program in the upper computer, which is used to intuitively display the fault location information and abnormal data, facilitating staff to quickly understand the fault situation and take timely countermeasures.

[0045] Optionally, when the remote monitoring module 5 receives abnormal data, it can mark the abnormal data in the form of an exclamation mark at the corresponding node position in the electrical circuit node model diagram and display it through the monitoring display terminal 502, enabling staff to timely observe the fault location information where the insulation fault occurs according to the position of the exclamation mark.

[0046] As Figure 1 shown, the low-voltage power distribution cabinet insulation fault location system further includes a mobile terminal device 6. Among them, the mobile terminal device 6 is connected to the insulation fault location module 4 and is used to receive the fault location information and display the fault location information.

[0047] With the above structure, the insulation fault location module 4 is connected to the mobile terminal device 6, and the mobile terminal device 6 can be the mobile phone of each staff member or an electronic device that is easy to move. The staff can view the fault location information on the mobile terminal device 6 in a timely manner and take corresponding measures promptly. The low-voltage power distribution cabinet insulation fault location system integrates a mobile terminal device 6, which not only enables the staff to receive the fault information location at any time and anywhere without having to return to the control room to confirm the fault location, greatly improving work efficiency. It can also notify the staff to evacuate the dangerous area promptly in case of an emergency, ensuring the personal safety of the staff. In addition, the mobile terminal device 6 can record the fault handling process, which is convenient for later analysis of the fault causes of the electrical circuit and formulation of preventive measures.

[0048] As Figure 1 shown, the low-voltage power distribution cabinet insulation fault location system further includes a plurality of alarm devices 7. Among them, the plurality of alarm devices 7 are respectively connected to a plurality of nodes in one-to-one correspondence and are connected to the insulation fault location module 4, and are respectively used to trigger a fault alarm based on the fault location signal sent by the insulation fault location module 4.

[0049] Optionally, the insulation fault in the electrical circuit is one of the main causes of electrical fires and electric shock accidents. In case of an insulation fault, the alarm device 7 corresponding to the faulty node emits a fault alarm, which can promptly remind the surrounding staff to evacuate in time. The alarm device 7 responds immediately, can remind the on-site personnel of potential dangers at the first time, avoid direct contact of personnel with the fault area, and reduce secondary accidents caused by improper operation. At the same time, it effectively reduces the safety risks caused by insulation failure and protects the staff and surrounding equipment from damage.

[0050] Optionally, the insulation fault location module 4 and the alarm device 7 can be connected through a wireless local area network. Since there are multiple alarm devices 7, there will be multiple connection lines when all the alarm devices 7 are connected to the insulation fault location module 4 by wire. The wireless network can effectively avoid the situation that the connection lines between the insulation fault location module 4 and the alarm devices 7 are too many, resulting in the staff being tripped by the lines during the evacuation process and avoiding greater safety problems.

[0051] As Figure 1 shown, the plurality of alarm devices 7 are respectively sound and light alarms.

[0052] With the above structure, the audible and visual alarm is a device used to emit sound and light signals to alert people's attention. The audible and visual alarm consists of a buzzer and a flash lamp. When there is an electrical circuit insulation fault, the buzzer will emit a loud sound, and at the same time, the flash lamp will emit strong light to attract the attention of on-site personnel and remind them to take necessary actions. The audible and visual alarm can ensure the accurate transmission of fault alarms in the night or in low visibility environments, improving the safety protection effect.

[0053] As Figure 1 shown, the low-voltage power distribution cabinet insulation fault location system further includes a plurality of fault disconnectors 8. Among them, the plurality of fault disconnectors 8 are respectively connected to a plurality of nodes in one-to-one correspondence and are connected to the insulation fault location module 4, and are respectively used to trigger fault isolation based on the fault location signals sent by the insulation fault location module 4, so that the corresponding nodes are disconnected from the electrical circuit.

[0054] With the above structure, each of the plurality of fault disconnectors 8 in the plurality of fault disconnectors 8 corresponds to a node and is connected to the insulation fault location module 4. When an insulation fault is detected, the insulation fault location module 4 will send a fault location signal to the fault disconnector 8 to prompt the disconnector to act and cut off the connection between the fault node and the low-voltage electrical circuit, realizing the rapid isolation of the fault, avoiding the expansion of the fault range, and protecting the system safety. The automatic isolation function of the fault disconnector 8 can effectively prevent the insulation fault from spreading from one node to the entire system, or the degree of the insulation fault gradually increasing at this node, reducing the impact of the current insulation fault on the low-voltage power distribution cabinet, and also achieving the effect of reducing the maintenance cost.

[0055] As Figure 1 shown, the wireless transmission module 2 adopts the low-power Bluetooth protocol.

[0056] With the above structure, when the wireless transmission module 2 uses Bluetooth for transmission, the low-power Bluetooth protocol can be used. Specifically, the low-power Bluetooth protocol can significantly reduce the energy consumption of the wireless transmission module 2, and at the same time simplifies the installation and maintenance process of the wireless transmission module 2. Through the low-power Bluetooth protocol, a stable and low-power data transmission channel is established between the wireless transmission module 2 and the insulation monitor 101 of the signal acquisition module 1, ensuring the real-time transmission of insulation condition data and providing a technical basis for the efficient operation of the low-voltage power distribution cabinet insulation fault location system.

[0057] Optionally, the wireless transmission module 2 adopting the Bluetooth Low Energy protocol greatly reduces the power consumption of the low-voltage power distribution cabinet insulation fault location system in data transmission, especially in a monitoring system that needs to run for a long time. At the same time, the Bluetooth Low Energy protocol has stability and the ability of long-distance transmission, enabling the low-voltage power distribution cabinet insulation fault location system to maintain good data transmission effect in a complex environment, providing stable technical support for the remote monitoring and fault location of the low-voltage power distribution cabinet insulation fault location system.

[0058] As Figure 1 shown, the low-voltage power distribution cabinet insulation fault location system further includes a plurality of temperature sensors 9, a plurality of humidity sensors 10, and a plurality of gas detectors 11. Among them, the plurality of temperature sensors 9 are respectively connected to the plurality of nodes one by one and are connected to the signal processing module 3, and are used for collecting the temperature information of the corresponding node positions and sending the collected temperature information to the signal processing module 3; the plurality of humidity sensors 10 are respectively connected to the plurality of nodes one by one and are connected to the signal processing module 3, and are used for collecting the humidity information of the corresponding node positions and sending the collected humidity information to the signal processing module 3; the plurality of gas detectors 11 are respectively connected to the plurality of nodes one by one and are connected to the signal processing module 3, and are used for collecting the gas information of the corresponding node positions and sending the collected gas information to the signal processing module 3; the signal processing module 3 is further used for identifying the abnormal temperature in the received temperature information, identifying the abnormal humidity in the received humidity information, and identifying the abnormal gas in the received gas information; the signal processing module 3 is further connected to the remote monitoring module 5 and is used for sending the abnormal temperature, abnormal temperature, and abnormal gas to the remote monitoring module 5; the remote monitoring module 5 is further used for displaying the abnormal temperature, abnormal temperature, and abnormal gas.

[0059] With the above structure, the integrated application of the temperature sensor 9, the humidity sensor 10, and the gas detector 11 in the low-voltage power distribution cabinet insulation fault location system, and all the above sensors are connected to the signal processing module 3. By real-time monitoring the environmental parameters of each node and collecting temperature, humidity, and gas information, the monitoring ability of the system is further enhanced. The signal processing module 3 can identify abnormal conditions from the received temperature, humidity, and gas information and send the abnormal data to the remote monitoring module 5 in time, facilitating the staff to comprehensively master the operation status of the low-voltage power distribution cabinet and take measures in time to cope with possible environmental risks, such as high temperature, high humidity, or the situation of harmful gas leakage, effectively preventing potential electrical safety accidents and ensuring the stable operation of the system and the safety of personnel.

[0060] Optionally, while detecting insulation faults, comprehensive monitoring of environmental parameters is carried out, adding environmental perception ability to the fault location system of low-voltage power distribution cabinets, enabling it to actively prevent electrical faults caused by environmental factors, such as accelerated insulation aging caused by high temperature and overload of electrical equipment in high-humidity environments. This preventive maintenance strategy not only improves the operation efficiency of the system but also reduces the probability of faults caused by environmental changes, providing a solid foundation for the long-term stable operation of the fault location system of low-voltage power distribution cabinets.

[0061] The device provided by the embodiment has the following beneficial effects:

[0062] (1) Through the preset insulation fault location method, determine the specific insulation fault location information and the fault type according to the abnormal data, and send the specific fault location information to the maintenance personnel. Intervention measures can be taken before the insulation fault develops into a serious accident through real-time monitoring, ensuring the long-term stable operation of the power distribution cabinet;

[0063] (2) The audible and visual alarm can ensure the accurate transmission of fault alarms in the night or low visibility environment, improving the safety protection effect;

[0064] (3) The wireless transmission module 2 using the low-power Bluetooth protocol greatly reduces the power consumption of the low-voltage power distribution cabinet insulation fault location system in data transmission. At the same time, the low-power Bluetooth protocol has the ability of stability and long-distance transmission, enabling the low-voltage power distribution cabinet insulation fault location system to maintain good data transmission effect in complex environments.

[0065] Based on the above embodiments and optional embodiments, the present utility model proposes an optional implementation manner, Figure 3 is an electronic component connection diagram of an optional low-voltage power distribution cabinet insulation fault location system according to an embodiment of the present utility model, as Figure 3 shown, the system includes:

[0066] The embodiment of the present utility model provides a low-voltage power distribution cabinet insulation fault location system, which includes three parts: a signal acquisition module 1, a signal processing module 3, and an insulation fault location module 4.

[0067] The signal acquisition module 1 real-time collects the insulation condition data of each node in the electrical circuit of the low-voltage power distribution cabinet through wireless means. Among them, the signal acquisition module 1 includes a plurality of insulation monitors 101, and the plurality of insulation monitors 101 are respectively installed on each node of the electrical circuit. The plurality of insulation detectors correspond to the plurality of nodes one by one. The plurality of insulation detectors can real-time monitor the insulation condition at the corresponding node and send the detected insulation condition data to the signal processing module 3 through wireless transmission.

[0068] The signal processing module 3 is used to receive and process the insulation condition data sent in real time by the signal acquisition module 1. Among them, the signal processing module 3 can perform data cleaning and feature extraction processing on the insulation condition data, and perform anomaly detection processing based on the processed insulation condition data. First, clean the received insulation condition data to remove abnormal and redundant data; then, extract key features from the cleaned insulation condition data; finally, through a preset anomaly detection and judgment method, judge whether the insulation condition at each node is normal to obtain abnormal data.

[0069] It should be noted that the signal processing module 3 can adopt any processor with processing and running functions. Among them, preprocessing the insulation condition data, using existing data cleaning and feature extraction methods, and judging the insulation condition at the node through a preset anomaly detection and judgment method can be directly and undoubtedly realized by a processor with processing functions. The above processing methods all rely on the signal processing module 3 to be realized and do not involve software improvements.

[0070] The insulation fault location module 4 determines the specific location of the insulation fault according to the abnormal data through a preset insulation fault location method. Thus, the location of the insulation fault can be accurately and quickly located.

[0071] The utility model realizes the wireless connection between each node of the electrical circuit and the signal processing module 3 through the Internet of Things technology, transmits data in real time, and ensures the real-time and accuracy of data acquisition. The signal processing module 3 performs data processing to realize the judgment of abnormal data, and the insulation fault location module 4 performs insulation fault location to accurately and quickly locate the insulation fault. It effectively realizes the real-time monitoring of each node of the electrical circuit and accurately and quickly locates the insulation fault.

[0072] In addition, it still needs to be noted that the optional or preferred implementation manners of this embodiment can be referred to the relevant descriptions in the embodiment, and will not be elaborated here.

[0073] The serial numbers of the above embodiments of the utility model are only for description and do not represent the advantages or disadvantages of the embodiments.

[0074] In the above embodiments of the utility model, the descriptions of each embodiment have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0075] The above is only the preferred implementation manner of the utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A low-voltage power distribution cabinet insulation fault location system, characterized in that, Including: A signal acquisition module (1) for real-time monitoring of the insulation condition data of multiple nodes included in the electrical circuit of the low-voltage power distribution cabinet; A wireless transmission module (2) connected to the signal acquisition module (1) for real-time transmission of the insulation condition data; A signal processing module (3) connected to the wireless transmission module (2) for receiving the insulation condition data transmitted by the wireless transmission module (2) and detecting abnormal data in the insulation condition data; An insulation fault location module (4) connected to the signal processing module (3) for locating the fault location information of the insulation fault in the electrical circuit according to the abnormal data.

2. The insulation fault location system for low-voltage power distribution cabinets according to claim 1, wherein The signal acquisition module (1) includes a plurality of insulation monitors (101), wherein the plurality of insulation monitors (101) are respectively connected to the plurality of nodes in one-to-one correspondence for real-time monitoring of the insulation condition data of the corresponding nodes.

3. The insulation fault location system for low-voltage power distribution cabinets according to claim 1, wherein The low-voltage power distribution cabinet insulation fault location system further includes a remote monitoring module (5), wherein the remote monitoring module (5) is connected to the insulation fault location module (4) for receiving the fault location information and displaying the fault location information.

4. The insulation fault location system for low-voltage power distribution cabinets according to claim 3, wherein The remote monitoring module (5) includes a network transmission unit (501) and a monitoring and display terminal (502), wherein, The network transmission unit (501) is connected to the insulation fault location module (4) for sending the fault location information to the monitoring and display terminal (502) through the network; The monitoring and display terminal (502) is connected to the network transmission unit (501) for displaying the fault location information.

5. The insulation fault location system for low-voltage power distribution cabinets according to claim 1, wherein, The low-voltage power distribution cabinet insulation fault location system further includes a mobile terminal device (6), wherein the mobile terminal device (6) is connected to the insulation fault location module (4) for receiving the fault location information and displaying the fault location information.

6. The low-voltage power distribution cabinet insulation fault location system according to claim 1, wherein, The low-voltage power distribution cabinet insulation fault location system further includes a plurality of alarm devices (7), wherein the plurality of alarm devices (7) are respectively connected to the plurality of nodes in one-to-one correspondence and connected to the insulation fault location module (4) for triggering fault alarms respectively based on the fault location signals sent by the insulation fault location module (4).

7. The insulation fault location system for low-voltage power distribution cabinets according to claim 6, wherein, The plurality of alarm devices (7) are respectively sound and light alarm devices.

8. The insulation fault location system for low-voltage power distribution cabinets according to claim 1, characterized in that, The low-voltage power distribution cabinet insulation fault location system further includes a plurality of fault disconnectors (8), wherein the plurality of fault disconnectors (8) are respectively connected to the plurality of nodes in one-to-one correspondence and connected to the insulation fault location module (4) for triggering fault isolation respectively based on the fault location signals sent by the insulation fault location module (4) so that the corresponding nodes are disconnected from the electrical circuit.

9. The insulation fault location system for low-voltage power distribution cabinets according to claim 1, characterized in that, The wireless transmission module (2) adopts a low-power Bluetooth protocol.

10. The insulation fault location system for low-voltage power distribution cabinets according to claim 3, wherein, The low-voltage power distribution cabinet insulation fault location system further includes a plurality of temperature sensors (9), a plurality of humidity sensors (10), and a plurality of gas detectors (11), wherein, The multiple temperature sensors (9) are connected to the multiple nodes in a one-to-one correspondence and are connected to the signal processing module (3), and are used for collecting the temperature information at the corresponding node positions and sending the collected temperature information to the signal processing module (3); The multiple humidity sensors (10) are connected to the multiple nodes in a one-to-one correspondence and are connected to the signal processing module (3), and are used for collecting the humidity information at the corresponding node positions and sending the collected humidity information to the signal processing module (3); The multiple gas detectors (11) are connected to the multiple nodes in a one-to-one correspondence and are connected to the signal processing module (3), and are used for collecting the gas information at the corresponding node positions and sending the collected gas information to the signal processing module (3); The signal processing module (3) is further used for identifying abnormal temperatures in the received temperature information, identifying abnormal humidities in the received humidity information, and identifying abnormal gases in the received gas information; The signal processing module (3) is further connected to the remote monitoring module (5), and is used for sending the abnormal temperature, the abnormal temperature, and the abnormal gas to the remote monitoring module (5); The remote monitoring module (5) is further used for displaying the abnormal temperature, the abnormal temperature, and the abnormal gas.

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