A power transmission line distributed fault diagnosis device

Abstract

The application provides a power transmission line distributed fault diagnosis device, which comprises an upper shell and a lower shell which are detachably connected to enclose a containing cavity, opposite ends of the containing cavity are respectively penetrated by semicircular holes which are communicated with the containing cavity, and two semicircular holes at the same end enclose an installation hole; two groups of wire clamping assemblies are respectively arranged in the installation holes at the two ends; a mainboard is arranged in the containing cavity; a power frequency traveling wave hidden danger sensor is in communication connection with an input end of the mainboard; a positioning module is in communication connection with an input end of the mainboard and is used for monitoring time and position information; a communication module is in communication connection with the mainboard and is used for being in communication connection with a monitoring master station; a battery is in electrical connection with the mainboard, the power frequency traveling wave hidden danger sensor and the positioning module; a solar panel is fixedly connected with an outer wall of the upper shell or the lower shell; a power board is in electrical connection with the solar panel, the mainboard, the power frequency traveling wave hidden danger sensor, the positioning module and the battery; and a transparent protective cover covers the solar panel. The application has the advantages of wide monitoring range, fast response speed and high positioning accuracy.

Description

Technical Field

[0001] This utility model relates to the field of power transmission line fault detection and location technology, specifically to a distributed fault diagnosis device for power transmission lines. Background Technology

[0002] With the widespread interconnection of my country's power grid and the significant increase in transmission capacity, high-voltage transmission lines have become increasingly advantageous in grid interconnection and long-distance power transmission, playing a crucial role, especially in major projects such as the national grid interconnection, the West-to-East Power Transmission Project, and the North-to-South Power Transmission Project. However, due to their long transmission distances and the complex and variable weather and environment along their routes, high-voltage transmission lines are susceptible to faults such as lightning strikes, electrical discharges, and short circuits. These faults are not only difficult to avoid, but also difficult to locate, leading to prolonged power outages, severely impacting power supply reliability and causing significant economic losses.

[0003] Traditional fault monitoring methods typically rely on centralized monitoring systems or manual inspections, which suffer from problems such as limited monitoring range, slow response speed, and low positioning accuracy, making it difficult to meet the fault monitoring needs of high-voltage transmission lines in long-distance and complex environments. Utility Model Content

[0004] In view of this, the present invention provides a distributed fault diagnosis device for power transmission lines to solve the above-mentioned technical problems.

[0005] The distributed fault diagnosis device for power transmission lines provided by this utility model includes:

[0006] The upper shell and the lower shell are detachably connected and together enclose a receiving cavity. The upper shell and the lower shell are respectively provided with semi-circular holes communicating with the receiving cavity at opposite ends in the extending direction. The two semi-circular holes at the same end enclose a mounting hole.

[0007] Two sets of wire clamping assemblies are respectively disposed in the mounting holes at both ends of the upper housing and the lower housing, for fitting and clamping the cable;

[0008] A motherboard, wherein the motherboard is disposed within the receiving cavity;

[0009] A power frequency traveling wave hazard sensor is disposed within the receiving cavity, and its output terminal is communicatively connected to the input terminal of the main board.

[0010] A positioning module is disposed within the receiving cavity, and its output terminal is communicatively connected to the input terminal of the motherboard for monitoring time and position information;

[0011] A communication module is disposed within the receiving cavity, communicates with the motherboard, and is used to communicate with the monitoring master station;

[0012] The battery is electrically connected to the motherboard, the power frequency traveling wave hazard sensor, and the positioning module.

[0013] A solar panel, wherein the solar panel is fixedly connected to the outer wall of the upper housing or the lower housing;

[0014] A power board is disposed within the receiving cavity, electrically connected to the solar panel, and electrically connected to the main board, the power frequency traveling wave hazard sensor, the positioning module, and the battery;

[0015] A transparent protective cover is provided to cover the solar panel.

[0016] Optionally, the distributed fault diagnosis device for power transmission lines further includes: a wind speed sensor, which is fixed to the outer wall of the upper housing or the lower housing, and the output terminal of the wind speed sensor is communicatively connected to the input terminal of the main board.

[0017] Optionally, the distributed fault diagnosis device for power transmission lines further includes a temperature and humidity sensor, which is fixed to the outer wall of the upper housing or the lower housing, and the output terminal of the temperature and humidity sensor is communicatively connected to the input terminal of the main board.

[0018] Optionally, the distributed fault diagnosis device for power transmission lines further includes a miniature camera, which is fixed to the outer wall of the upper housing or the lower housing, and the output end of the miniature camera is communicatively connected to the input end of the motherboard.

[0019] Optionally, the distributed fault diagnosis device for transmission lines further includes a cover plate, which is disposed within the receiving cavity and covers the main board.

[0020] Optionally, the distributed fault diagnosis device for transmission lines further includes a CT power-collecting core, which is disposed in the receiving cavity and electrically connected to the power board.

[0021] Optionally, the wire clamping assembly includes a detachably connected first half-ring and a second half-ring, the first half-ring and the second half-ring surrounding a fixing hole.

[0022] Optionally, the inner walls of the first half-ring and the second half-ring are provided with sealing gaskets.

[0023] Optionally, the positioning module adopts a BeiDou / GPS dual timing system.

[0024] Optionally, a plurality of partitions are fixed inside the lower housing, and the plurality of partitions divide the lower housing into a plurality of mounting slots.

[0025] The technical solution provided by this utility model has at least the following beneficial effects compared with the prior art:

[0026] By employing this invention, the distributed fault diagnosis device for transmission lines can be spaced out along the entire length of the cable, ensuring the monitoring range. The power frequency traveling wave hazard sensor monitors the raw data of various voltages and currents flowing through the cable in real time. The main board processes the raw data in real time and analyzes the specific fault type, improving response speed and work efficiency. The positioning module monitors the time information and the geographical location information of the device in real time. Combined with the distance data between the fault point and the device calculated by the main board based on the traveling wave current data, the specific location of the fault point can be obtained more accurately, improving positioning accuracy, shortening the time for line fault troubleshooting and power outage, and improving power supply quality. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a distributed fault diagnosis device for transmission lines according to an embodiment of the present invention;

[0028] Figure 2 for Figure 1 The exploded view of the distributed fault diagnosis device for the transmission line is shown.

[0029] Figure label:

[0030] 1: Upper housing; 2: Lower housing; 3: Wire clamping assembly; 31: First half ring; 32: Second half ring; 4: Main board; 5: Power frequency traveling wave hazard sensor; 6: Positioning module; 7: Battery; 8: Solar panel; 9: Power board; 10: Transparent protective cover; 11: Semicircular hole; 12: Cover plate; 13: CT power extraction core; 14: Partition plate. Detailed Implementation

[0031] The embodiments of this utility model will be further described below with reference to the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description of this utility model. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0032] Figure 1 This is a schematic diagram of a distributed fault diagnosis device for transmission lines according to an embodiment of the present invention; Figure 2 for Figure 1The exploded view of the distributed fault diagnosis device for the transmission line is shown. Figure 1 and Figure 2 As shown, the distributed fault diagnosis device for transmission lines includes an upper housing 1, a lower housing 2, two sets of wire clamping assemblies 3, a main board 4, a power frequency traveling wave hazard sensor 5, a positioning module 6, a communication module (not shown), a battery 7, a solar panel 8, a power board 9, and a transparent protective cover 10. The upper housing 1 and lower housing 2 are detachably connected, forming a receiving cavity. Semicircular holes 11 communicating with the receiving cavity are respectively opened at opposite ends of the upper housing 1 and lower housing 2 along their extension directions. Two semicircular holes 11 at the same end form a mounting hole. The two sets of wire clamping assemblies 3 are respectively installed in the mounting holes at both ends of the upper housing 1 and lower housing 2 for fitting and clamping cables. The main board 4 is located within the receiving cavity. The power frequency traveling wave hazard sensor 5 is located within the receiving cavity, and its output end is communicatively connected to the input end of the main board 4. The positioning module 6 is located within the receiving cavity. Its output terminal is connected to the input terminal of the main board 4 for monitoring time and location information; the communication module is set in the cavity and is connected to the main board 4 for communication and is used to communicate with the monitoring master station; the battery 7 is electrically connected to the main board 4, the power frequency traveling wave hazard sensor 5, and the positioning module 6; the solar panel 8 is fixedly connected to the outer wall of the upper shell 1 or the lower shell 2; the power board 9 is set in the cavity and is electrically connected to the solar panel 8, and is also electrically connected to the main board 4, the power frequency traveling wave hazard sensor 5, the positioning module 6, and the battery 7; the transparent protective cover 10 covers the solar panel 8.

[0033] In use, a diagnostic device is placed at intervals along the extension direction of the power transmission cable. During installation, the upper housing 1 and lower housing 2 are fitted with the power transmission cable. At the same time, the internal power frequency traveling wave hazard sensor 5 is fitted with the cable, and the cable clamping components 3, fixed in the mounting holes at both ends, are fitted and clamp the cable, thus realizing the installation of the diagnostic device on the cable. The positioning module 6 monitors the time information and the geographical location information of the diagnostic device in real time, and transmits the time information and geographical location information to the main board 4. The power frequency traveling wave hazard sensor 5 integrates a power frequency current sensor, a power frequency voltage sensor, a traveling wave current sensor, a traveling wave voltage sensor, and a hazard current sensor. It monitors the raw power frequency current data, power frequency voltage data, traveling wave current data, traveling wave voltage data, and hazard current data flowing through the cable in real time and transmits this raw data to the main board 4. The main board 4 receives this raw data and preprocesses it, including noise filtering, signal denoising, and data normalization. Then, it uses artificial intelligence algorithms to extract features from the processed data. Combining this with internally stored data features corresponding to different fault types, it comprehensively analyzes the extracted features to determine whether a fault has occurred, the specific fault type (such as short circuit fault, open circuit fault, grounding fault, and insulation degradation fault), and its severity, and generates fault information. When a fault occurs, using the traveling wave ranging principle, the main board 4 can calculate the distance between the fault point and the diagnostic device based on the received traveling wave current data, thereby obtaining the specific location of the fault point based on the diagnostic device's own geographical location information and this distance data. The mainboard 4 transmits processed data, fault information, the time of the fault occurrence, the geographical location of the diagnostic device, and the calculated distance between the fault point and the diagnostic device to the monitoring master station via the communication module. This allows staff to view and promptly ascertain whether a cable fault has occurred, as well as the specific location, time, and type of fault, and then take appropriate measures to address it. During this process, the solar panel 8 absorbs solar energy, converts it into electrical energy, and transmits the electrical energy to the power board 9. The power board 9 charges the battery 7 and simultaneously provides power to the mainboard 4, the power frequency traveling wave hazard sensor 5, and the positioning module 6. When sunlight is insufficient, the battery 7 provides power to the mainboard 4, the power frequency traveling wave hazard sensor 5, and the positioning module 6, ensuring the continuous operation of the device in complex environments.

[0034] Using this invention, the distributed fault diagnosis device for power transmission lines can be arranged at intervals along the entire length of the cable, ensuring the monitoring range; the power frequency traveling wave hazard sensor 5 monitors the raw data of various voltages and currents flowing through the cable in real time, and the main board 4 processes the raw data in real time and analyzes the specific fault type, improving response speed and work efficiency; the positioning module 6 monitors the time information and the geographical location information of the device in real time, and combined with the distance data between the fault point and the device calculated by the main board 4 based on the traveling wave current data, the specific location of the fault point can be obtained more accurately, improving positioning accuracy, shortening the line fault troubleshooting and power outage time, and improving power supply quality.

[0035] like Figure 1 and Figure 2As shown, in this embodiment, both the upper housing 1 and the lower housing 2 have semi-circular cross-sections, forming a hollow cylindrical cavity. Semi-circular holes 11 penetrate the left and right ends of both the upper housing 1 and the lower housing 2. The openings of the two semi-circular holes 11 at the same end are opposite each other. After connection, the two semi-circular holes 11 are joined to form a circular mounting hole. The wire clamping assembly 3 is fixed inside the mounting hole. After the upper housing 1 and lower housing 2 are fitted with cables, the cables pass through the wire clamping assemblies 3 at both ends and are clamped by the wire clamping assemblies 3, thus connecting the cables to the diagnostic device. The power frequency traveling wave hazard sensor 5 is composed of two semi-ring structures, one half arranged inside the upper housing 1 and the other half inside the lower housing 2. The cable passes through the center of the sensor. The communication module supports 4G and LoRa dual-mode transmission, automatically switching to LoRa self-organizing network in areas without 4G coverage, and communicating with the monitoring master station in real time. Simultaneously, control commands issued by the monitoring master station are also transmitted to the motherboard 4 through the communication module. The communication module possesses efficient data transmission and remote control capabilities. Its core function is to achieve real-time data transmission, ensuring that the monitoring master station can promptly obtain the operating status and fault information of the transmission line. The communication module can transmit data such as power frequency signals, traveling wave signals, and hidden current signals processed by the main board 4 to the monitoring master station in real time. It also has data encryption capabilities, employing advanced encryption algorithms to protect transmitted data and ensure its security and reliability during transmission. The communication module is a mature existing technology, and its specific structure and working principle will not be elaborated here. The solar panel 8 is fixed to the outer wall of the upper housing 1, set as an arc-shaped plate matching the outer wall of the upper housing 1, and electrically connected to the power board 9. The power board 9 manages the distribution of electrical energy, providing the required operating voltage for the main board 4, the power frequency traveling wave hidden danger sensor 5, and the positioning module 6. The battery 7 is a rechargeable battery 7, and the solar panel 8 charges the battery 7 through the power board 9. The transparent protective cover 10 is connected to the outer wall of the upper housing 1, covering the solar panel 8. It matches the shape of the solar panel 8, protecting the solar panel 8 from damage, and allowing sunlight to pass through the transparent protective cover 10 without affecting the solar panel 8's ability to generate electricity using solar energy. Multiple diagnostic devices can also share data and perform collaborative analysis through communication modules. For example, using two diagnostic devices to perform a dual-end ranging algorithm can further improve the accuracy and efficiency of fault location, providing strong support for the safe and stable operation of the power grid. The mainboard 4 also has a self-diagnostic function, capable of monitoring the operating status of each component inside the device in real time and sending alarm information to the monitoring master station when an anomaly is detected, ensuring the reliable operation of the device. Depending on the actual application, the positioning module 6 can be any existing positioning device that meets the working environment requirements of the diagnostic device. The solar panel 8, power board 9, power frequency traveling wave hazard sensor 5, and mainboard 4 are all mature existing technologies, and their specific working principles will not be elaborated here. The mainboard 4 preprocesses the raw data monitored by the power frequency traveling wave hazard sensor 5 and determines the fault type based on the processed data. This can be achieved using existing mature algorithms, and their specific principles will not be elaborated here.

[0036] Optionally, the distributed fault diagnosis device for power transmission lines also includes a wind speed sensor (not shown). The wind speed sensor is fixed to the outer wall of the upper housing 1 or the lower housing 2, and its output terminal is communicatively connected to the input terminal of the main board 4. By using the wind speed sensor to monitor the wind speed data at the device's location in real time, it can alert personnel to take precautionary measures when the wind speed is too high, thus providing early warning of external cable faults.

[0037] The wind speed sensor monitors the wind speed data at its location in real time and transmits the wind speed data to the main board 4. The main board 4 transmits the wind speed data and the geographical location information of the device to the monitoring master station through the communication module so that the staff can check it at any time. When the wind speed data exceeds the set wind speed, it indicates that the wind speed in the area is too high and the cables may be at risk of damage. At this time, the staff can inspect the cables in the area with excessive wind speed.

[0038] Optionally, the distributed fault diagnosis device for power transmission lines also includes a temperature and humidity sensor. The temperature and humidity sensor is fixed to the outer wall of the upper housing 1 or the lower housing 2, and its output terminal is communicatively connected to the input terminal of the main board 4. By using the temperature and humidity sensor to monitor the temperature and humidity data at the device's location in real time, it can alert staff to perform inspection and protection work when abnormal temperature and humidity data indicate potential icing or other damage to the cables, thus providing early warning of external cable faults.

[0039] The temperature and humidity sensor monitors the temperature and humidity data of its location in real time and transmits the data to the main board 4. The main board 4 then transmits the temperature and humidity data, along with the geographical location information of the device, to the monitoring master station via the communication module, so that staff can check it at any time. When the temperature and humidity data are abnormal, it indicates that the area may experience rain, snow, ice, or other conditions, and the cables may be at risk of damage. In this case, staff can inspect the cables in the area.

[0040] Optionally, the distributed fault diagnosis device for power transmission lines also includes a miniature camera, which is fixed to the outer wall of the upper housing 1 or the lower housing 2. The output of the miniature camera is communicatively connected to the input of the mainboard 4. Using the image data transmitted by the miniature camera, the surrounding environment can be monitored, foreign objects can be detected and dealt with promptly to prevent further faults.

[0041] The miniature camera captures image data around the device and transmits the image data to the motherboard 4 in real time. The motherboard 4 then transmits the image data to the monitoring master station via a communication module, allowing staff to remotely monitor the situation around the device and promptly detect any abnormalities.

[0042] Optionally, the distributed fault diagnosis device for transmission lines also includes a cover plate 12, which is disposed within the receiving cavity and covers the main board 4. The cover plate 12 is used to cover and protect the main board 4, preventing dust, moisture or other contaminants from entering and ensuring the normal operation of the main board 4.

[0043] like Figure 2 As shown, in this embodiment, the cross-sectional area of ​​the cover plate 12 is larger than that of the main board 4 so as to completely cover the main board 4, and a through hole is provided on the cover plate 12 to realize the connection between other components and the main board 4. The main board 4 and the cover plate 12 are both fixed in the lower housing 2.

[0044] Optionally, the distributed fault diagnosis device for transmission lines also includes a CT power-taking core 13, which is disposed within a receiving cavity and electrically connected to the power supply board 9. This configuration utilizes electromagnetic induction to draw power from the cable, making it suitable for rainy environments. In conjunction with the solar panel 8, it provides comprehensive power to all components.

[0045] like Figure 2 As shown, in this embodiment, the CT power-collecting core 13 is configured as a ring, composed of two detachably connected parts. When the device is installed on the cable, the cable passes through the ring-shaped CT power-collecting core 13. When the cable is running, the ring-shaped CT power-collecting core 13 obtains electrical energy from the cable through electromagnetic induction. Then, the power supply board 9 converts the power voltage input from the ring-shaped CT power-collecting core 13 into the operating voltage required by the main board 4, positioning module 6, power frequency traveling wave hazard sensor 5, and battery 7, thereby supplying power. The CT power-collecting core 13 is a mature existing technology, and its specific structure and working principle will not be described in detail here.

[0046] Optionally, the cable clamping assembly 3 includes a detachably connected first half-ring 31 and a second half-ring 32, which enclose a fixing hole. The cable clamping assembly 3 is configured as two detachably connected parts, which facilitates the clamping operation of the cable and allows for recycling.

[0047] like Figure 2 As shown, in this embodiment, the first half-ring 31 and the second half-ring 32 are arranged opposite to each other, and the two enclose a circular fixing hole. The outer diameter of the cable matches the inner diameter of the fixing hole. The cable passes through the fixing hole and is clamped and limited by the fixing hole.

[0048] Optionally, the inner walls of the first half-ring 31 and the second half-ring 32 are provided with sealing gaskets. With this arrangement, after the cable passes through the fixing hole formed by the first half-ring 31 and the second half-ring 32, the gap between the cable and the inner wall of the fixing hole is sealed by the sealing gaskets, preventing rain, snow, dust, etc. from entering the interior of the diagnostic device through the fixing hole.

[0049] Optionally, the positioning module 6 employs a BeiDou / GPS dual timing system. With the help of this system, precise time and location information can be extracted, enabling accurate location of the fault area and shortening troubleshooting time. The BeiDou / GPS dual timing system is a mature existing technology, and its specific structure and working principle will not be elaborated here.

[0050] Optionally, multiple partitions 14 are fixed inside the lower housing 2, dividing the lower housing 2 into multiple mounting slots. This arrangement allows the mainboard 4, the power frequency traveling wave hazard sensor 5, the positioning module 6, etc., to be placed in a separate mounting slot without interfering with each other.

[0051] like Figure 2 As shown, in this embodiment, two partitions 14 are fixed parallel to each other and spaced apart inside the lower housing 2, dividing the space inside the lower housing 2 into three parts. The number and specific positions of the partitions 14 can be adjusted according to the actual application.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A distributed fault diagnosis device for transmission lines, characterized in that, include: The upper shell and the lower shell are detachably connected and together enclose a receiving cavity. The upper shell and the lower shell are respectively provided with semi-circular holes communicating with the receiving cavity at opposite ends in the extending direction. The two semi-circular holes at the same end enclose a mounting hole. Two sets of wire clamping assemblies are respectively disposed in the mounting holes at both ends of the upper housing and the lower housing, for fitting and clamping the cable; A motherboard, wherein the motherboard is disposed within the receiving cavity; A power frequency traveling wave hazard sensor is disposed within the receiving cavity, and its output terminal is communicatively connected to the input terminal of the main board. A positioning module is disposed within the receiving cavity, and its output terminal is communicatively connected to the input terminal of the motherboard for monitoring time and position information; A communication module is disposed within the receiving cavity, communicates with the motherboard, and is used to communicate with the monitoring master station; The battery is electrically connected to the motherboard, the power frequency traveling wave hazard sensor, and the positioning module. A solar panel, wherein the solar panel is fixedly connected to the outer wall of the upper housing or the lower housing; A power board is disposed within the receiving cavity, electrically connected to the solar panel, and electrically connected to the main board, the power frequency traveling wave hazard sensor, the positioning module, and the battery; A transparent protective cover is provided to cover the solar panel.

2. The distributed fault diagnosis device for transmission lines according to claim 1, characterized in that, Also includes: A wind speed sensor is fixed to the outer wall of the upper housing or the lower housing, and the output terminal of the wind speed sensor is communicatively connected to the input terminal of the motherboard.

3. The distributed fault diagnosis device for transmission lines according to claim 2, characterized in that, Also includes: A temperature and humidity sensor is fixed to the outer wall of the upper housing or the lower housing, and the output terminal of the temperature and humidity sensor is communicatively connected to the input terminal of the motherboard.

4. The distributed fault diagnosis device for transmission lines according to claim 3, characterized in that, Also includes: A miniature camera is fixed to the outer wall of the upper housing or the lower housing, and the output end of the miniature camera is communicatively connected to the input end of the motherboard.

5. The distributed fault diagnosis device for transmission lines according to any one of claims 1-4, characterized in that, Also includes: A cover plate is disposed within the receiving cavity and covers the main board.

6. The distributed fault diagnosis device for transmission lines according to any one of claims 1-4, characterized in that, Also includes: The CT power-collecting core is disposed within the receiving cavity and is electrically connected to the power board.

7. The distributed fault diagnosis device for transmission lines according to any one of claims 1-4, characterized in that: The wire clamping assembly includes a detachably connected first half-ring and a second half-ring, which together form a fixing hole.

8. The distributed fault diagnosis device for transmission lines according to claim 7, characterized in that: The inner walls of the first half-ring and the second half-ring are provided with sealing gaskets.

9. The distributed fault diagnosis device for transmission lines according to any one of claims 1-4, characterized in that: The positioning module uses a BeiDou / GPS dual timing system.

10. The distributed fault diagnosis device for transmission lines according to any one of claims 1-4, characterized in that: Multiple partitions are fixed inside the lower housing, and the multiple partitions divide the lower housing into multiple mounting slots.

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