A high-voltage transmission line lightning conductor breakage monitoring system based on Beidou technology

Abstract

The application discloses a high-voltage transmission line lightning conductor breakage monitoring system based on Beidou technology, which comprises a control device, a monitoring sensor module, a lightning conductor breakage monitoring module and a lightning conductor-tower clamp contact resistance monitoring module.The monitoring sensor module comprises a clamp body, a tension monitoring sensor and a contact resistance monitoring sensor, and the lightning conductor breakage monitoring module is bidirectionally connected with the tension monitoring sensor and the control device.The high-voltage transmission line lightning conductor breakage monitoring system based on Beidou technology can monitor the state of the lightning conductor by monitoring the tension of the high-voltage transmission line lightning conductor and the contact resistance at the clamp body, timely locates and alarms the faults such as lightning conductor breakage and excessive contact resistance through the Beidou short message technology, and thus facilitates the high-voltage transmission line operation and maintenance personnel to timely handle the faults and ensures the safe operation and power supply reliability of the high-voltage transmission line.

Description

Technical Field

[0001] This application relates to the field of lightning protection wire monitoring technology, and in particular to a high-voltage transmission line lightning protection wire breakage monitoring system based on Beidou technology. Background Technology

[0002] The lightning protection wire at the top of high-voltage transmission lines is used for line lightning protection, preventing direct lightning strikes and indirect lightning strikes from affecting power supply reliability. The lightning protection wire is connected to the high-voltage transmission line tower via clamps and grounded through the tower. When struck by lightning, the lightning protection wire releases the enormous energy of the lightning surge current to the ground through the tower, thus preventing flashover of the line insulator strings and ensuring the safety of equipment inside the substation. However, during long-term operation, the contact resistance between the lightning protection wire and the clamp can become too high, leading to excessive lightning surge current, overheating, and wire breakage at the contact point. Locating and locating a broken lightning protection wire is extremely difficult, a time-consuming and labor-intensive task for high-voltage transmission line operation and maintenance personnel. Furthermore, the weight of the lightning protection wire generates significant tensile force at the contact point with the clamp, which accelerates wear and tear on both the wire and the clamp. In addition, in the existing technology, separate tension detectors and resistance detectors are generally installed on the lightning protection line. When the lightning protection line sways, the detectors sway with the lightning protection line. Since the detectors also have a certain weight, the inertial sway of the lightning protection line is increased, which further increases the wear of the contact parts between the lightning protection line and the clamp. Summary of the Invention

[0003] This application proposes a high-voltage transmission line lightning protection wire disconnection monitoring system based on Beidou technology, which has the advantages of monitoring the resistance at the connection between the lightning protection wire and the clamp, as well as monitoring the disconnection of the lightning protection wire, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this application adopts the following technical solution: a high-voltage transmission line lightning protection wire breakage monitoring system based on Beidou technology, comprising: a control device, a monitoring sensor module, a lightning protection wire breakage monitoring module, and a lightning protection wire and tower clamp contact resistance monitoring module. The monitoring sensor module includes a clamp body, a tension monitoring sensor, and a contact resistance monitoring sensor. The lightning protection wire breakage monitoring module is bidirectionally connected to the tension monitoring sensor and the control device, respectively. The lightning protection wire and tower clamp contact resistance monitoring module is bidirectionally connected to the contact resistance monitoring sensor and the control device.

[0005] The clamp body includes a hull, side pressure plates, and a hanging plate. A lightning protection wire runs through the hull. The hanging plate is rotatably connected to the middle position of the outer surface of the hull. There are two side pressure plates, which are respectively arranged on both sides of the hanging plate. A central pressure plate is arranged in the middle of the hanging plate. Fixed guide blocks and telescopic guide blocks are provided on the inner wall of the hull. A tension monitoring sensor is provided at the bottom of the hull. A contact resistance monitoring sensor is provided on the side of the hull.

[0006] Furthermore, there are two fixed guide blocks located below the side pressure plate. The two ends of the telescopic guide block are connected to the two fixed guide blocks respectively. The telescopic guide block is vertically telescopic. A cover is connected to the top of the middle position of the telescopic guide block. The cover is a hemispherical shape with an open bottom. When the telescopic guide block is fully folded, it is at the same height as the fixed guide block.

[0007] Furthermore, the tensile monitoring sensor includes a tensile detection housing, a sensor telescopic rod, a pressure detection head, and a pressure detection control end. The tensile detection housing is installed on the bottom surface of the hull and is located in the middle of the hull. The fixed end and the pressure detection control end of the sensor telescopic rod are both located inside the tensile detection housing. The extended end of the sensor telescopic rod extends above the tensile detection housing and penetrates the hull and the telescopic guide block. The pressure detection head is connected to the top of the extended end of the sensor telescopic rod and is fitted into a cover.

[0008] Furthermore, the side pressure plate is U-shaped, with its opening facing downwards and its top end clamped onto the top wall of the hull. The two side walls of the side pressure plate are rotatably connected to the outer wall of the hull by bolts. A vertical rod is connected to the bottom wall of the top end of the side pressure plate, and a horizontal shaft is connected to the vertical rod. The two ends of the horizontal shaft are connected to the inner wall of the hull, and a pressure roller is sleeved in the middle of the horizontal shaft. The bottom surface of the pressure roller is in contact with the outer wall of the lightning protection wire.

[0009] Furthermore, the two ends of the mounting plate are rotatably connected to the two outer walls of the hull, the top end of the mounting plate extends upward and is bolted to the tower of the high-voltage transmission line, a baffle is provided in the middle of the mounting plate to form a sealed cavity, the top end of the intermediate pressure plate is connected to a pressure plate telescopic rod, the fixed end of the pressure plate telescopic rod is connected to the sealed cavity, the telescopic end of the pressure plate telescopic rod extends to the bottom of the mounting plate sealed cavity and is connected to the intermediate pressure plate, and a pressure plate spring is provided between the pressure plate telescopic rod and the intermediate pressure plate, the pressure plate spring is normally in a compressed state.

[0010] Furthermore, the contact resistance monitoring sensor includes a resistance detection housing, a pulse power supply, a circuit breaker, a first clamp and a second clamp, and a wire. The resistance detection housing is connected to one side of the hull. The pulse power supply and the circuit breaker are both located inside the resistance detection housing. The first clamp and the second clamp are respectively fitted onto the lightning protection wire and the tower connected to the mounting plate. The first clamp and the second clamp are connected to the pulse power supply through the first clamp. The circuit breaker is connected to the wire.

[0011] Furthermore, the operation process of the lightning protection wire breakage monitoring module is as follows: the control device located at the top of the tower processes the data returned by the tension monitoring sensor according to the lightning protection wire tension threshold, determines the lightning protection wire breakage information, and preliminarily judges the cause of excessive tension such as lightning protection wire galloping and icing based on the tension change frequency.

[0012] Furthermore, the lightning protection wire and tower clamp contact resistance monitoring module automatically monitors the contact resistance between the lightning protection wire and the tower clamp through a contact resistance monitoring sensor and issues alarm information through Beidou technology. The operation process of the lightning protection wire and tower clamp contact resistance monitoring module is as follows:

[0013] If the contact resistance monitoring sensor detects that the contact resistance exceeds the set threshold, it will send a short message containing information such as the tower location and the contact resistance value to the maintenance personnel via the Beidou transceiver device to promptly address the excessive contact resistance between the lightning protection wire and the clamp body.

[0014] 1. This application provides a high-voltage transmission line lightning arrester breakage monitoring system based on Beidou technology. By monitoring the tension of the lightning arrester wire and the contact resistance at the clamp body, the status of the lightning arrester wire can be monitored. The system can promptly locate and alarm faults such as lightning arrester breakage and excessive contact resistance through Beidou short message technology, which facilitates timely fault handling by high-voltage transmission line maintenance personnel and ensures the safe operation of high-voltage transmission lines and the reliability of power supply.

[0015] 2. The high-voltage transmission line lightning protection wire breakage monitoring system provided in this application incorporates a tension monitoring sensor within the clamp body. The tension monitoring sensor can be directly installed simply by installing the clamp body, eliminating the need for additional installation. This improves installation convenience. Furthermore, since the tension monitoring sensor is connected to the clamp body, the clamp body increases its connection force with the tower, thereby reducing the swaying of the tension monitoring sensor caused by lightning protection wire swaying. This, in turn, reduces the inertial swaying of the lightning protection wire and decreases wear on the contact points between the lightning protection wire and the clamp body.

[0016] 3. The high-voltage transmission line lightning protection wire breakage monitoring system provided in this application increases the contact area between the lightning protection wire and the inner wall of the ship by setting fixed and telescopic guide blocks in the hull, thereby reducing the impedance of the lightning protection wire in contact with the hull, which is beneficial to the conduction of lightning current and reduces the wear of the hull. Attached Figure Description

[0017] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0018] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein:

[0019] Figure 1 This is a schematic diagram of the structure of the wire clamp body, the tension monitoring sensor, and the contact resistance monitoring sensor of the present invention;

[0020] Figure 2 This is a schematic diagram of the side pressure plate of the present invention;

[0021] Figure 3 This is a cross-sectional view of the structure at the mounting plate of the present invention;

[0022] Figure 4 This is a front view of the wire clamp body of the present invention;

[0023] Figure 5 This is a schematic diagram of the installation of the control device and monitoring sensor module of the present invention on the tower;

[0024] Figure 6 This is a flowchart of the lightning protection wire tension monitoring process of the present invention;

[0025] Figure 7 This is a flowchart of the lightning protection wire clamp contact resistance monitoring process of the present invention.

[0026] In the diagram: 1. Wire clamp body; 101. Hull; 102. Side pressure plate; 1021. Vertical rod; 1022. Horizontal shaft; 1023. Pressure roller; 103. Hanging plate; 104. Middle pressure plate; 1041. Pressure plate telescopic rod; 1042. Pressure plate spring; 105. Fixed guide block; 106. Telescopic guide block; 107. Cover; 2. Tension monitoring sensor; 201. Tension detection box; 202. Sensor telescopic rod; 203. Pressure detection head; 204. Pressure detection control end; 3. Contact resistance monitoring sensor; 301. Resistance detection box; 302. Pulse power supply; 303. Circuit breaker; 304. First jaw clamp; 305. Second jaw clamp; 306. Wire. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] Example 1

[0029] A high-voltage transmission line lightning protection wire breakage monitoring system based on BeiDou technology includes: a control device, a monitoring sensor module, a lightning protection wire breakage monitoring module, and a lightning protection wire-to-tower clamp contact resistance monitoring module. The monitoring sensor module includes a clamp body 1, a tension monitoring sensor 2, and a contact resistance monitoring sensor 3. The lightning protection wire breakage monitoring module is bidirectionally connected to both the tension monitoring sensor 2 and the control device. The lightning protection wire-to-tower clamp contact resistance monitoring module is bidirectionally connected to both the contact resistance monitoring sensor 3 and the control device. The system also includes a BeiDou monitoring station or reference station located near the high-voltage transmission line tower. The monitoring sensor module is located at the clamp body 1 where the lightning protection wire connects to the transmission line tower. The monitoring sensor module can monitor both the tension of the lightning protection wire and the contact resistance between the lightning protection wire and the tower clamp. The monitoring sensor module is powered by a solar panel located in the middle of the lightning protection wire on the tower. Because the solar panel is far from the high-voltage conductor, the high voltage of the high-voltage transmission line conductor will not affect the solar panel.

[0030] See appendix Figure 5 The BeiDou signal transceiver and control device are located below the solar panels and are also connected to the tower. Since the tower is grounded through grounding piles, both the solar panels and the BeiDou signal transceiver can be considered directly grounded. The monitoring sensor modules are located at the connection points between the lightning protection wires and the tower on both sides of the control device.

[0031] The signal lines of the monitoring sensor module and its power supply lines are arranged in the same way, both being wired transmission lines.

[0032] As attached Figure 1As shown, the clamp body 1 includes a hull 101, side pressure plates 102, and a hanging plate 103. A lightning protection wire runs through the hull 101. The hanging plate 103 is rotatably connected to the middle position of the outer surface of the hull 101. There are two side pressure plates 102, which are respectively set on both sides of the hanging plate 103. During normal use, the side pressure plates 102 squeeze the lightning protection wire from the top to prevent the lightning protection wire from shaking. However, during the detection of the tension of the lightning protection wire, the lightning protection wire can be moved so that the tension detection of the lightning protection wire located inside the hull 101 can reflect the actual tension of the lightning protection wire located outside the hull 101. This prevents the lightning protection wire from being unable to move due to the side pressure plates 102 pressing down on both ends of the lightning protection wire located inside the hull 101. In this case, the tension of the lightning protection wire detected from the hull 101 cannot reflect the actual tension of the lightning protection wire. A medium-pressure plate 104 is provided in the middle of the hanging plate 103. During normal use, the medium-pressure plate 104 presses against the lightning protection wire, applying downward compressive force to the lightning protection wire, thereby improving the stability of the lightning protection wire. However, when the lightning protection wire is subjected to tensile testing, the medium-pressure plate 104 can be in no contact with the lightning protection wire, thus facilitating the testing of the lightning protection wire's tensile strength. The inner wall of the hull 101 is provided with a fixed guide block 105 and a telescopic guide block 106. The bottom ends of the fixed guide block 105 and the telescopic guide block 106 are connected to the inner wall of the hull 101, while the upper ends are in contact with the lightning protection wire. Under the compressive force of the side pressure plate 102 and the medium-pressure plate 104, the contact force between the lightning protection wire and the fixed guide block 105 and the telescopic guide block 106 is increased, which is beneficial for the transmission of lightning current from the lightning protection wire through the clamp body 1 to the tower. A tension monitoring sensor 2 is provided on the lower part of the hull 101. The tension monitoring sensor 2 is used to detect the tension of the lightning protection wire. A contact resistance monitoring sensor 3 is provided on the side of the hull 101. The contact resistance monitoring sensor 3 is used to detect the resistance at the clamp body 1.

[0033] Example 2

[0034] As attached Figure 1 and attached Figure 2 As shown, there are two fixed guide blocks 105, each located below the side pressure plate 102. The two ends of the telescopic guide block 106 are connected to the two fixed guide blocks 105 respectively. The telescopic guide block 106 is vertically telescopic. Due to the connection of the fixed guide blocks 105, the unfolding of the telescopic guide block 106 is similar to the opening of a fan, i.e., one end is fixed while the other end can be unfolded. A cover 107 is connected to the top of the telescopic guide block 106 at its middle position. The cover 107 is a hemispherical shape with an open bottom. When the telescopic guide block 106 is fully folded, it is at the same height as the fixed guide blocks 105. Thus, when the telescopic guide block 106 is fully folded, the lightning protection wire is in a straight state within the hull 101, preventing undulations in the lightning protection wire due to the different heights of the fixed guide blocks 105 and the telescopic guide blocks 106. This maximizes the contact area between the lightning protection wire and the fixed guide blocks 105 and the telescopic guide blocks 106, which is beneficial for the transmission of lightning current from the lightning protection wire through the clamp body 1 to the tower.

[0035] As attached Figure 2 As shown, the side pressure plate 102 is U-shaped, with its opening facing downwards and its top end secured to the top wall of the hull 101. The two side walls of the side pressure plate 102 are rotatably connected to the outer wall of the hull 101 via bolts. A vertical rod 1021 is connected to the bottom wall of the top end of the side pressure plate 102, and a transverse shaft 1022 is connected to the vertical rod 1021. Both ends of the transverse shaft 1022 are connected to the inner wall of the hull 101. A pressure roller 1023 is sleeved in the middle of the transverse shaft 1022. The bottom surface of the pressure roller 1023 contacts the outer wall of the lightning protection wire. An arc-shaped groove is formed on the outer surface of the pressure roller 1023, matching the arc shape of the top end of the lightning protection wire, allowing the lightning protection wire to be secured within the arc-shaped groove. When testing the tension of the lightning protection wire, the rotation of the pressure roller 1023 facilitates the movement of the lightning protection wire.

[0036] As attached Figure 1 As shown, the tension monitoring sensor 2 includes a tension detection housing 201, a sensor telescopic rod 202, a pressure detection head 203, and a pressure detection control terminal 204. The tension detection housing 201 is installed on the bottom surface of the hull 101. Since the clamp body 1 is bolted to the tower, the tower provides stability to the clamp body 1. Compared to directly installing the tension detection housing 201 on the lightning protection line, this application installs the tension detection housing 201 on the hull 101, which helps to improve the stability of the tension monitoring sensor 2, reduce the degree of swaying of the tension monitoring sensor 2 with the lightning protection line, protect the tension monitoring sensor 2, and prevent the tension monitoring sensor 2 from falling off the lightning protection line. The tensile testing box 201 is located in the middle of the hull 101. The fixed end of the sensor telescopic rod 202 and the pressure detection control end 204 are both located inside the tensile testing box 201. The extended end of the sensor telescopic rod 202 extends to the top of the tensile testing box 201 and passes through the hull 101 and the telescopic guide block 106. The pressure detection head 203 is connected to the top of the extended end of the sensor telescopic rod 202. The pressure detection head 203 is fitted into the cover 107. The cover 107 is spherically shaped with a diameter according to the size of the pressure detection head 203. The pressure detection head 203 contains a piezoelectric crystal, which is used to detect the pressure of the lightning protection wire on the pressure detection head 203. This allows the sensor telescopic rod 202 to push the lightning protection wire upward, causing the lightning protection wire to move to a certain height, and thus the tensile force on the lightning protection wire can be calculated. In the process of testing the tension of the lightning protection wire, the medium pressure plate 104 is moved upward until it does not contact the lightning protection wire. Then, the sensor telescopic rod 202 is repeatedly extended and retracted to make the tension of the lightning protection wire located on the hull 101 equal to that of other suspended lightning protection wires. Then, the tension of the lightning protection wire is tested again by extending the sensor telescopic rod 202.

[0037] As attached Figure 3 and attached Figure 4As shown, the two ends of the mounting plate 103 are rotatably connected to the two outer walls of the hull 101. The top of the mounting plate 103 extends upward and is bolted to the tower of the high-voltage transmission line. A baffle is provided in the middle of the mounting plate 103 to form a sealed cavity. The top of the intermediate pressure plate 104 is connected to a pressure plate telescopic rod 1041. The fixed end of the pressure plate telescopic rod 1041 is connected to the sealed cavity, which protects the pressure plate telescopic rod 1041. The telescopic end of the pressure plate telescopic rod 1041 extends to the bottom of the sealed cavity of the mounting plate 103 and connects to the intermediate pressure plate 104. A pressure plate spring 1042 is provided between the pressure plate telescopic rod 1041 and the intermediate pressure plate 104. The pressure plate spring 1042 is normally in a compressed state. Under normal circumstances, the pressure plate telescopic rod 1041 is in a telescopic state. At this time, under the elastic force of the pressure plate spring 1042, the intermediate pressure plate 104 is squeezed downward and locked onto the top of the lightning protection wire, thus fixing the lightning protection wire. When it is necessary to test the tension of the lightning protection wire, the drive pressure plate telescopic rod 1041 retracts upward to overcome the elastic force of the pressure plate spring 1042, so that the intermediate pressure plate 104 does not come into contact with the lightning protection wire, so as to facilitate the measurement of the tension of the lightning protection wire.

[0038] See appendix Figure 6 The tensile monitoring sensor 2 is powered by a solar panel, and a detection command is issued by the control device. The raw data monitored by the tensile monitoring sensor 2 is transmitted to the control device via a wire.

[0039] The control device processes the data transmitted from the tension monitoring sensor based on the tension threshold of the lightning protection wire for different voltage levels, and determines whether the threshold is exceeded.

[0040] Exceeding the threshold range includes being greater than the threshold or less than the threshold.

[0041] If the monitored tension value of the lightning protection wire exceeds the threshold, a secondary analysis is performed on the frequency of tension changes. If the tension changes rapidly, it is determined that the tension exceeds the threshold due to reasons such as lightning protection wire galloping. A warning short message containing the tower location information and the cause of the excessive tension is sent to maintenance personnel via the BeiDou information transceiver device for timely handling.

[0042] If the monitored tension value of the lightning protection wire is lower than the threshold, it is determined that the lightning protection wire is broken. A short warning message containing the tower location information and the broken lightning protection wire is sent to maintenance personnel via a BeiDou information transceiver device for timely handling.

[0043] Example 3

[0044] As attached Figure 1As shown, the contact resistance monitoring sensor 3 includes a resistance detection housing 301, a pulse power supply 302, a circuit breaker 303, a first jaw clamp 304, and a second jaw clamp 305. The resistance detection housing 301 is connected to one side of the hull 101. The pulse power supply 302 and the circuit breaker 303 are both located inside the resistance detection housing 301. The first jaw clamp 304 and the second jaw clamp 305 are respectively sleeved on the lightning protection wire and the tower connected to the mounting plate 103. One of the first jaw clamp 304 or the second jaw clamp 305 has the structure of the jaw of the clamp meter type contact resistance detector in the prior art, that is, it includes a current coil and a voltage coil. The other of the first jaw clamp 304 or the second jaw clamp 305 is a contact end, which is used to connect the circuit of the lightning protection wire or the tower to the pulse power supply 302. It can be directly connected by wire or clamped by jaws. The first jaw clamp 304 and the second jaw clamp 305 are connected to the pulse power supply 302 via the first jaw clamp 304. Two circuit breakers 303 are connected to the conductor 306, one for each end of the pulse power supply 302, to control the disconnection of the circuit between the pulse power supply 302 and the first jaw clamp 304 and the second jaw clamp 305. In use, the pulse power supply 302 emits a pulse voltage, inducing a current in the loop formed by the first jaw clamp 304, the lightning rod, the hull 101, the mounting plate 103, the tower, the second jaw clamp 305, and the conductor 306. The induced current in the loop is obtained using the current coil in the first jaw clamp 304 or the second jaw clamp 305. The impedance between the lightning rod and the hull 101 and the tower is calculated using the ratio of the pulse voltage to the induced current.

[0045] See appendix Figure 7 The contact resistance threshold of high-voltage transmission towers should be set according to the design specifications for lightning protection lines.

[0046] The contact resistance monitoring sensor 3 is powered by a solar panel, and a detection command is issued by the control device. The raw data of the contact resistance monitoring sensor 3 is transmitted to the control device via wire.

[0047] The control device processes the data returned by the contact resistance monitoring sensor 3 based on the lightning protection wire contact resistance threshold and determines whether the threshold is exceeded.

[0048] If the contact resistance does not exceed the threshold, the contact resistance will be stored in the control device.

[0049] If the contact resistance exceeds the set threshold, information including the tower location and contact resistance value will be sent to the transmission line operation and maintenance personnel via a short message through the Beidou transceiver device.

Claims

1. A high-voltage transmission line lightning protection wire breakage monitoring system based on BeiDou technology, characterized in that, include: The system includes a control device, a monitoring sensor module, a lightning protection wire breakage monitoring module, and a lightning protection wire and tower clamp contact resistance monitoring module. The monitoring sensor module includes a clamp body (1), a tension monitoring sensor (2), and a contact resistance monitoring sensor (3). The lightning protection wire breakage monitoring module is bidirectionally connected to the tension monitoring sensor (2) and the control device, respectively. The lightning protection wire and tower clamp contact resistance monitoring module is bidirectionally connected to the contact resistance monitoring sensor (3) and the control device. The clamp body (1) includes a hull (101), a side pressure plate (102), and a hanging plate (103). A lightning protection wire runs through the hull (101). The hanging plate (103) is rotatably connected to the middle position of the outer surface of the hull (101). There are two side pressure plates (102) and they are respectively set on both sides of the hanging plate (103). A middle pressure plate (104) is set in the middle of the hanging plate (103). A fixed guide block (105) and a telescopic guide block (106) are provided on the inner wall of the hull (101). A tension monitoring sensor (2) is provided below the hull (101). A contact resistance monitoring sensor (3) is provided on the side of the hull (101). The top of the telescopic guide block (106) at the middle position is connected to a cover (107). The tensile monitoring sensor (2) includes a tensile detection housing (201), a sensor telescopic rod (202), a pressure detection head (203), and a pressure detection control end (204). The tensile detection housing (201) is installed on the bottom surface of the hull (101). The tensile detection housing (201) is located in the middle of the hull (101). The fixed end of the sensor telescopic rod (202) and the pressure detection control end (204) are both located inside the tensile detection housing (201). The extended end of the sensor telescopic rod (202) extends above the tensile detection housing (201) and passes through the hull (101) and the telescopic guide block (106). The pressure detection head (203) is connected to the top of the extended end of the sensor telescopic rod (202). The pressure detection head (203) is sleeved in the cover (107).

2. The high-voltage transmission line lightning protection wire breakage monitoring system based on Beidou technology according to claim 1, characterized in that, There are two fixed guide blocks (105) located below the side pressure plate (102). The two ends of the telescopic guide block (106) are connected to the two fixed guide blocks (105) respectively. The telescopic guide block (106) is vertically telescopic. The cover (107) is a hemispherical shape with an open bottom. When the telescopic guide block (106) is fully folded, it is at the same height as the fixed guide block (105).

3. The high-voltage transmission line lightning protection wire breakage monitoring system based on Beidou technology according to claim 1, characterized in that, The side pressure plate (102) is U-shaped, with its opening facing downwards and its top end clamped to the top wall of the hull (101). The two side walls of the side pressure plate (102) are rotatably connected to the outer wall of the hull (101) by bolts. A vertical rod (1021) is connected to the bottom wall of the top end of the side pressure plate (102). The vertical rod (1021) is connected to a horizontal shaft (1022). The two ends of the horizontal shaft (1022) are connected to the inner wall of the hull (101). A pressure roller (1023) is sleeved in the middle of the horizontal shaft (1022). The bottom surface of the pressure roller (1023) is in contact with the outer wall of the lightning protection wire.

4. The high-voltage transmission line lightning protection wire breakage monitoring system based on Beidou technology according to claim 1, characterized in that, The two ends of the mounting plate (103) are rotatably connected to the two outer walls of the hull (101). The top end of the mounting plate (103) extends upward and is bolted to the tower of the high-voltage transmission line. A baffle is provided in the middle of the mounting plate (103) to form a sealed cavity. The top end of the intermediate pressure plate (104) is connected to a pressure plate telescopic rod (1041). The fixed end of the pressure plate telescopic rod (1041) is connected to the sealed cavity. The telescopic end of the pressure plate telescopic rod (1041) extends to the bottom of the sealed cavity of the mounting plate (103) and is connected to the intermediate pressure plate (104). A pressure plate spring (1042) is provided between the pressure plate telescopic rod (1041) and the intermediate pressure plate (104). The pressure plate spring (1042) is normally in a compressed state.

5. A high-voltage transmission line lightning protection wire breakage monitoring system based on BeiDou technology according to claim 1, characterized in that, The contact resistance monitoring sensor (3) includes a resistance detection box (301), a pulse power supply (302), a circuit breaker (303), a first jaw clamp (304), a second jaw clamp (305), and a wire (306). The resistance detection box (301) is connected to one side of the hull (101). The pulse power supply (302) and the circuit breaker (303) are both located inside the resistance detection box (301). The first jaw clamp (304) and the second jaw clamp (305) are respectively sleeved on the lightning protection wire and the tower connected to the mounting plate (103). The first jaw clamp (304) and the second jaw clamp (305) are connected to the pulse power supply (302) through the first jaw clamp (304). The circuit breaker (303) is connected to the wire (306).

6. The high-voltage transmission line lightning protection wire breakage monitoring system based on Beidou technology according to claim 1, characterized in that, The operation process of the lightning protection wire breakage monitoring module is as follows: The control device located at the top of the tower processes the data transmitted back by the tension monitoring sensor (2) according to the lightning protection wire tension threshold, determines the lightning protection wire breakage information, and preliminarily judges that the reason for the excessive tension of the lightning protection wire is lightning protection wire dancing or icing according to the tension change frequency.

7. A high-voltage transmission line lightning protection wire breakage monitoring system based on BeiDou technology according to claim 1, characterized in that, The contact resistance monitoring module between the lightning protection wire and the tower clamp automatically monitors the contact resistance between the lightning protection wire and the tower clamp through the contact resistance monitoring sensor (3) and issues an alarm message through Beidou technology. The operation process of the contact resistance monitoring module between the lightning protection wire and the tower clamp is as follows: If the contact resistance monitoring sensor (3) detects that the contact resistance exceeds the set threshold, it will send the relevant information to the maintenance personnel in a short message through the Beidou transceiver device to deal with the excessive contact resistance between the lightning protection wire and the clamp body (1) in a timely manner. The relevant information includes the location of the tower and the value of the contact resistance.

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