Down conductor clamp wind-resistant protection device and its testing method

Abstract

This invention discloses a wind-swept protection device for downlead clamps and its detection method. Belonging to the field of power supply protection, it employs a multi-level protection design—including a main body enclosure, extended anchoring at the outlet, and flexible buffering—to evenly distribute the dynamic load generated by wind swaying, significantly reducing stress concentration at the root of the downlead and effectively preventing clamp fatigue fracture and downlead detachment. It integrates a triaxial acceleration vibration sensor, combined with CT power supply, 4G, and MQTT protocols, to capture dynamic data such as wind sway angle, frequency, and amplitude, and accurately identify lead wire breakage through a dedicated breakage criterion, achieving multi-dimensional status monitoring. It mainly comprises an upper protective sleeve and a lower protective sleeve, which are hinged and fixed with bolts. Flexible sleeves are provided on both sides of the upper and lower protective sleeves, secured by a pre-adjustment structure. A flexible layer is provided inside the upper and lower protective sleeves. This invention is mainly used for wind-swept protection of downlead clamps.

Description

Technical Field

[0001] This invention relates to the field of power supply protection, and more specifically, to a wind-resistant protection device for a down conductor clamp and its testing method. Background Technology

[0002] Power distribution lines are the core carriers of electrical energy transmission and distribution in power systems, and their safe and stable operation is directly related to the reliability of electricity use in industrial and agricultural production and daily life. Down conductors, as a key component of power distribution lines, bear the important function of transmitting line energy to distribution equipment (such as PT equipment, drop-out switches, etc.), while clamps are the core components that ensure a reliable connection between the down conductors and the equipment; their connection strength and resistance to environmental interference directly determine the safety of line operation.

[0003] In outdoor natural environments, power distribution line down conductors and clamps are subjected to wind loads for extended periods, making them prone to periodic swaying motion. Traditional down conductor clamps and down conductors often employ rigid connection structures, lacking targeted protection and buffering designs for the clamp body and the root of the down conductor. On the one hand, the dynamic loads generated during wind swaying directly act on the connection between the clamp and the down conductor, causing stress concentration in this area. Long-term, repeated fatigue loads accelerate the aging and fracture of the clamp's metal components, and may even cause the down conductor to detach, resulting in safety accidents such as short circuits and power outages. On the other hand, existing clamp protection devices are mostly designed with fixed specifications, unable to adapt to different models and sizes of clamp products such as PT clamps and drop-out switch clamps, leading to a wide variety of spare parts, high inventory pressure, and poor versatility.

[0004] Meanwhile, traditional clamps and protective structures lack effective condition monitoring functions, making it impossible to capture key operating parameters such as wind swing frequency, amplitude and abnormal vibration in real time. They are also difficult to provide early warnings of potential faults such as loose bolts and clamp fatigue. Maintenance work relies heavily on manual inspections, which is not only inefficient and costly, but also makes it difficult to detect hidden faults in a timely manner, resulting in a passive maintenance mode and further increasing the safety risks of line operation. Summary of the Invention

[0005] The purpose of this invention is to provide a wind-resistant protection device for downlead clamps and its detection method. Through a multi-level protection design including a main body wrapping, extended anchoring at the outlet, and flexible buffering, the device evenly distributes the dynamic load generated by wind swaying, significantly reducing stress concentration at the root of the downlead, and effectively preventing fatigue fracture of the clamp and detachment of the downlead. It integrates a triaxial acceleration vibration sensor, combined with CT power supply, 4G communication, and MQTT protocol, to capture dynamic data such as wind sway angle, frequency, and amplitude, and accurately identify lead wire breakage through a dedicated breakage criterion, achieving multi-dimensional status monitoring.

[0006] This invention is achieved through the following technical solution: A wind-resistant protection device for a down conductor clamp includes an upper protective sleeve and a lower protective sleeve, which are hinged and fixed with bolts. Flexible sleeves are provided on both sides of the upper and lower protective sleeves, and these flexible sleeves are secured by a pre-adjustment structure. A flexible layer is provided inside the upper and lower protective sleeves, and several fastening bolts are provided on both sleeves. An arc-shaped top plate that mates with the bottom of the fastening bolts is provided on the flexible layer. A control box is located in the middle of the lower protective sleeve. The control box contains a main control unit and a triaxial acceleration vibration sensor. The vibration sensor is mounted on a base inside the control box via a pre-drilled threaded slot. The main control unit and other peripherals are powered through a CT coil, which is sleeved on the cable. The CT coil collects line power, which is converted to 12V DC by a rectifier module and an intelligent charge / discharge management controller to power the main control unit and peripheral devices. The main control unit is connected to a 4G communication module and the triaxial acceleration vibration sensor.

[0007] Furthermore, the pre-adjustment structure includes a reinforcing strip, one end of which is a bolt-fixed end, and the other end of which has an opening groove. The reinforcing strip is located outside the flexible sleeve, and the opening groove has a certain length. The bolt-fixed end of the reinforcing strip is fixed to the upper and lower protective sleeves respectively by fastening bolts and washers. The opening groove end of the reinforcing strip is used to tighten and secure the flexible sleeve and the reinforcing strip by fastening hose clamps.

[0008] Furthermore, the reinforcing strip is a bendable stainless steel sheet or titanium alloy sheet. When installing the reinforcing strip, it can be bent to fit the cable according to the cable specifications. After being fixed by the tightening hose clamp, the bending stress at the root of the cable during wind swing can be distributed to a longer section of the conductor, reducing stress concentration.

[0009] Furthermore, the upper and lower protective sleeves are provided with several reinforcing ribs.

[0010] Furthermore, a sealing gasket is provided at the engagement point of the upper protective sleeve and the lower protective sleeve.

[0011] Furthermore, the flexible sleeve is provided with a zipper on its side.

[0012] A testing method for a down conductor clamp anti-wind sway protection device, using the aforementioned down conductor clamp anti-wind sway protection device, specifically includes the following steps: S1. Data Acquisition: The triaxial accelerometer and vibration sensor acquires real-time data on the swing angle and attitude change of the lead wire, and the vibration sensor captures the frequency, amplitude and abnormal vibration signals of the wire clamp swing. At the same time, the CT coil acquires cable current data, such as voltage data of non-PT lead wires or PT lead wires, as the basis for wire breakage judgment. S2. Configuration for bidirectional communication based on the MQTT protocol; S3, Logic for judging abnormal swing: S301, Threshold Reception: The device synchronizes the swing thresholds set in the cloud / WeChat mini-program in real time through the subscribed configuration topic, such as the angle threshold ±15° and the frequency threshold 5Hz, and stores them in the chip for later use. S302. Data Comparison: The cloud platform compares the received real-time oscillation data, such as angle, frequency, and amplitude, with a set threshold in real time. If the angle of a single swing exceeds the threshold or the frequency of the wind swing is consistently higher than the threshold, it is marked as an abnormal swing. If the amplitude reaches the abnormal judgment standard, such as exceeding twice the preset wind swing amplitude or exceeding 1.5 times the statistical historical swing data, it is marked as an abnormal swing. S303, Warning Trigger: After determining that there is an abnormal swing, a warning message is generated, including the abnormality type, data peak, and occurrence time. The message is published to the cloud via MQTT topic, and the abnormal data is temporarily stored locally to prevent data loss due to network interruption. S4. Determine if the wire is disconnected; S5, Early Warning / Alarm Output and Feedback.

[0013] Furthermore, step S2 specifically includes the following steps: S201. Connection Establishment: The main control unit accesses the network through the 4G communication module, establishes a TCP connection with the cloud server based on the MQTT protocol, completes device SN code authentication, and ensures encrypted and stable communication link. S202, Topic Subscription and Publishing: On the device side: Subscribe to configuration topics distributed from the cloud / mini-program to receive parameters such as swing angle threshold, frequency threshold, and disconnection judgment threshold; publish real-time data topics to push swing angle, frequency, amplitude, attitude data, and current / voltage monitoring values. Cloud / Mini Program side: Subscribe to real-time data topics published by devices to obtain monitoring information; publish configuration topics to send parameter adjustment instructions to devices, such as modifying the swing angle warning threshold; Data format: The transmitted data adopts JSON format, which includes device ID, acquisition timestamp, swing angle, wind swing frequency, amplitude value, line current / voltage value, and sensor status field to ensure that the data is structured and parsable.

[0014] Furthermore, step S4 specifically includes the following steps: S401, Data Monitoring: Real-time monitoring of line current non-PT lead or PT lead voltage data, recording the average rate of change trend of the data within 10 seconds; S402, Disconnection Criterion Triggered: Non-PT lead: If the current value suddenly decreases and the instantaneous value is lower than 10% of the set normal operating current, and is accompanied by a sudden change in the swing data, it is determined that the lead is broken.

[0015] PT lead: If the voltage suddenly drops and is below 20% of the set rated voltage, combined with abnormal swing data, it is determined that the PT lead is broken. S403 Alarm Confirmation: After a disconnection is determined, the main control starts a secondary verification. It confirms that the data has not been recovered after three consecutive acquisition cycles to avoid false judgment. Then, a disconnection alarm message is generated, which includes the disconnection type, occurrence time, and line parameters.

[0016] Furthermore, step S5 specifically includes the following steps: S501, Information Push: After receiving the early warning / alarm information in the cloud, it forwards it to the WeChat mini program via the MQTT protocol. The mini program displays the data curve, abnormal status and location information in real time. S502, User Interaction: Users can adjust threshold parameters through a mini-program. The parameters are sent to the device via the MQTT configured topic. After receiving the parameters, the main controller updates the configuration and sends confirmation information to the cloud, forming a closed loop. S503, Operation and Maintenance Collaboration: When the abnormal state persists, the system pushes SMS / APP notifications to operation and maintenance personnel through the 4G communication module, and at the same time, retains the abnormal data to the cloud to provide a basis for condition-based inspection and predictive maintenance.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. Through a multi-level protection design including main body wrapping, extended anchoring at the outlet, and flexible buffering, the dynamic load generated by wind sway is evenly distributed, significantly reducing stress concentration at the root of the down conductor, effectively preventing fatigue fracture of the clamp and detachment of the down conductor, and fundamentally solving the safety hazards caused by wind sway of outdoor power distribution lines.

[0018] 2. Adopting a modular and adaptive clamping design, with the help of the compression deformation of the internal flexible layer and adjustable fastening bolts, one set of equipment can be adapted to various specifications of clamps such as PT clamps and drop-out switch clamps within the same size range, reducing the types of spare parts and inventory pressure, and improving the convenience of operation and maintenance.

[0019] 3. Integrating a triaxial acceleration vibration sensor, combined with CT power supply, 4G communication and MQTT protocol, it not only captures dynamic data such as wind swing angle, frequency and amplitude, but also accurately identifies lead wire breakage through exclusive wire breakage criteria, realizing multi-dimensional status monitoring, transforming traditional passive manual inspection into proactive predictive maintenance, reducing operation and maintenance costs and the risk of delayed fault handling.

[0020] 4. Based on the MQTT protocol, it enables two-way communication between the device and the cloud and WeChat mini-program. The lightweight transmission is adapted to complex outdoor network environments, with low data transmission latency and low packet loss rate, ensuring real-time interaction between swing data and control commands. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure at point AA of the present invention.

[0022] In the diagram: 1. Upper protective sleeve; 2. Lower protective sleeve; 3. Fastening bolt; 4. Reinforcing strip; 5. Flexible sleeve; 6. Reinforcing rib; 7. Fastening hose clamp; 8. Sealing gasket; 9. Arc-shaped top plate; 10. Flexible layer; 11. CT coil; 12. Control box; 13. Zipper. Detailed Implementation

[0023] The present invention will now be further described.

[0024] like Figure 1 – Figure 2 As shown in Embodiment 1, a wind-resistant protection device for a down conductor clamp includes an upper protective sleeve 1 and a lower protective sleeve 2, which are hinged together. Each of the upper and lower protective sleeves 1 and 2 has a fixing seat at its engagement point, secured with bolts and nuts. Flexible sleeves 5 are provided on both sides of the upper and lower protective sleeves 1 and 2, and are fastened by a pre-adjustment structure. A flexible layer 10 is provided inside the upper and lower protective sleeves 1 and 2. Several fastening bolts 3 are provided on the upper and lower protective sleeves 1 and 2, and the flexible layer 10 has a fastening mechanism for connecting the bolts 3. The bottom is fitted with an arc-shaped top plate 9, and a control box 12 is located in the middle of the lower protective sleeve 2. The control box 12 contains a main control unit and a triaxial acceleration vibration sensor. The vibration sensor is installed on the base inside the control box 12 through a pre-reserved threaded slot. The main control unit and other peripherals are powered through a CT coil 11, which is sleeved on a cable. The CT coil 11 collects the line power and converts it into DC 12V through a rectifier module and an intelligent charge and discharge management controller to power the main control unit and peripheral devices. The main control unit is connected to a 4G communication module and a triaxial acceleration vibration sensor.

[0025] Specifically, the hinged upper protective sleeve 1 and lower protective sleeve 2 are convenient to be fitted onto the outside of the cable. The fastening bolt 3, together with the arc-shaped top plate 9, clamps the flexible layer 10 to the outside of the cable. By utilizing the compression deformation of the internal flexible layer 10, one device can adapt to various specifications of clamps within a size range (e.g., different models such as S, M, and L are designed for PT clamps, drop-out switch clamps, etc.).

[0026] The inner flexible layer 10 is made of high-strength rubber or polyurethane elastomer, possessing excellent weather resistance, aging resistance, and insulation properties. This layer can deform under pressure, tightly conforming to the surface of wire clamps of different sizes and shapes, filling gaps.

[0027] The flexible sleeve 5 is a flexible extension sleeve with a length of 15-25cm, and its material is the same as that of the inner flexible layer 10.

[0028] The pre-adjustment structure includes a reinforcing strip 4, one end of which is a bolt fixing end, and the other end of which has an opening groove. The reinforcing strip 4 is located outside the flexible sleeve 5, and the opening groove has a certain length. The bolt fixing end of the reinforcing strip 4 is fixed to the upper protective sleeve 1 and the lower protective sleeve 2 respectively by fastening bolts 3 and washers. The opening groove end of the reinforcing strip 4 is tightened and secured to the flexible sleeve 5 and the reinforcing strip 4 by fastening hose clamps 7.

[0029] The reinforcing strip 4 is a bendable stainless steel or titanium alloy sheet. During installation, the reinforcing strip 4 can be bent to fit the cable according to its specifications. After being fixed by the hose clamp 7, it can distribute the bending stress at the cable root during wind swaying to a longer section of the conductor, reducing stress concentration. The upper protective sleeve 1 and lower protective sleeve 2 are provided with several reinforcing ribs 6; the fastening points of the upper protective sleeve 1 and lower protective sleeve 2 are provided with sealing gaskets 8; and the flexible sleeve 5 has a zipper 13 on its side.

[0030] Specifically, during installation, tightening the retaining clamp 7 will gently and firmly clamp the end of the extension sleeve to the down conductor, forming a second anchor point. This is equivalent to changing the rigid connection between the clamp and the down conductor into a combination of a rigid connection and flexible buffer, effectively suppressing the transmission of vibrations caused by wind swaying.

[0031] Example 2: A testing method for a downlead clamp anti-wind sway protection device, using the downlead clamp anti-wind sway protection device described in Example 1, specifically includes the following steps: S1. Data Acquisition: The triaxial acceleration vibration sensor collects real-time data on the swing angle and attitude change of the lead wire. The vibration sensor captures the frequency, amplitude, and abnormal vibration signals of the wire clamp sway (such as the characteristic frequency of bolt loosening). At the same time, the CT coil 11 collects cable current data, such as the voltage data of non-PT lead wires or PT lead wires, as the basis for judging wire breakage. S2. Configuration for bidirectional communication based on the MQTT protocol; S3, Logic for judging abnormal swing: S301, Threshold Reception: The device synchronizes the swing thresholds set in the cloud / WeChat mini-program in real time through the subscribed configuration topic, such as the angle threshold ±15°, the frequency threshold 5Hz, etc., and stores them in the chip for later use. S302. Data Comparison: The cloud platform compares the received real-time oscillation data, such as angle, frequency, and amplitude, with a set threshold in real time. If the angle of a single swing exceeds the threshold or the frequency of the wind swing is consistently higher than the threshold, it is marked as an abnormal swing. If the amplitude reaches the abnormal judgment standard, such as exceeding twice the preset wind swing amplitude or exceeding 1.5 times the statistical historical swing data, it is marked as an abnormal swing. S303, Warning Trigger: After determining that there is an abnormal swing, a warning message is generated, including the abnormality type, data peak, and occurrence time. The message is published to the cloud via MQTT topic, and the abnormal data is temporarily stored locally to prevent data loss due to network interruption. S4. Determine if the wire is disconnected; S5, Early Warning / Alarm Output and Feedback.

[0032] Step S2 specifically includes the following steps: S201. Connection Establishment: The main control unit accesses the network through the 4G communication module, establishes a TCP connection with the cloud server based on the MQTT protocol, completes device SN code authentication, and ensures encrypted and stable communication link. S202, Topic Subscription and Publishing: On the device side: Subscribe to configuration topics distributed by the cloud / mini-program, such as device / config, to receive parameters such as swing angle threshold, frequency threshold, and disconnection judgment threshold; publish real-time data topics, such as device / data, to push swing angle, frequency, amplitude, attitude data, and current / voltage monitoring values. Cloud / Mini Program side: Subscribe to real-time data topics published by devices to obtain monitoring information; publish configuration topics to send parameter adjustment instructions to devices, such as modifying the swing angle warning threshold; Data format: The transmitted data adopts JSON format, which includes fields such as device ID, acquisition timestamp, swing angle (X / Y / Z axis), wind swing frequency, amplitude value, line current / voltage value, and sensor status, to ensure that the data is structured and parsable.

[0033] Step S4 specifically includes the following steps: S401, Data Monitoring: Real-time monitoring of line current non-PT lead or PT lead voltage data, recording the average rate of change trend of the data within 10 seconds; S402, Disconnection Criterion Triggered: Non-PT lead: If the current value suddenly decreases and the instantaneous value is lower than 10% of the set normal operating current, and is accompanied by a sudden change in the swing data, it is determined that the lead is broken.

[0034] PT lead: If the voltage suddenly drops and is below 20% of the set rated voltage, combined with abnormal swing data, it is determined that the PT lead is broken. S403 Alarm Confirmation: After a disconnection is determined, the main control starts a secondary verification. It confirms that the data has not been recovered after three consecutive acquisition cycles to avoid false judgment. Then, a disconnection alarm message is generated, which includes the disconnection type, occurrence time, and line parameters.

[0035] Step S5 specifically includes the following steps: S501, Information Push: After receiving the early warning / alarm information in the cloud, it forwards it to the WeChat mini program via the MQTT protocol. The mini program displays the data curve, abnormal status (abnormal swing / disconnection) and location information (combined with GPS data from the 4G communication module) in real time. S502, User Interaction: Users can adjust threshold parameters through a mini-program. The parameters are sent to the device via the MQTT configured topic. After receiving the parameters, the main controller updates the configuration and sends confirmation information to the cloud, forming a closed loop. S503, Operation and Maintenance Collaboration: When the abnormal state persists, the system pushes SMS / APP notifications to operation and maintenance personnel through the 4G communication module, and at the same time, retains the abnormal data to the cloud to provide a basis for condition-based inspection and predictive maintenance.

Claims

1. A wind-resistant protective device for a down conductor clamp, comprising an upper protective sleeve (1) and a lower protective sleeve (2), wherein the upper protective sleeve (1) and the lower protective sleeve (2) are hinged together and fixed by bolts, characterized in that: Both sides of the upper protective sleeve (1) and the lower protective sleeve (2) are provided with flexible sleeves (5). The flexible sleeves (5) are fastened by a pre-adjustment structure. The upper protective sleeve (1) and the lower protective sleeve (2) are provided with a flexible layer (10). The upper protective sleeve (1) and the lower protective sleeve (2) are provided with several fastening bolts (3). The flexible layer (10) is provided with an arc-shaped top piece (9) that matches the bottom of the fastening bolts (3). The lower protective sleeve (2) is provided with a control box (12) in the middle. The control box (12) is provided with a main control unit and a triaxial acceleration vibration sensor. The main control unit is powered by a CT coil (11). The CT coil (11) is sleeved on a cable. The main control unit is connected to a 4G communication module and a triaxial acceleration vibration sensor.

2. The wind-resistant protection device for the down conductor clamp according to claim 1, characterized in that: The pre-adjustment structure includes a reinforcing strip (4), one end of which is a bolt fixing end, and the other end of which has an opening groove. The reinforcing strip (4) is located outside the flexible sleeve (5). The bolt fixing end of the reinforcing strip (4) is fixed to the upper protective sleeve (1) and the lower protective sleeve (2) respectively by fastening bolts (3) and washers. The opening groove end of the reinforcing strip (4) is tightened by fastening hose clamps (7) to gather and secure the flexible sleeve (5) and the reinforcing strip (4).

3. The wind-resistant protection device for the down conductor clamp according to claim 2, characterized in that: The reinforcing strip (4) is a bendable stainless steel strip or titanium alloy strip. When installing the reinforcing strip (4), it can be bent to fit the cable according to the cable specifications. After being fixed by the fastening hose clamp (7), the bending stress at the root of the cable during wind swing can be distributed to a longer section of the conductor, reducing stress concentration.

4. The wind-resistant protection device for the down conductor clamp according to claim 1, characterized in that: The upper protective sleeve (1) and the lower protective sleeve (2) are provided with several reinforcing ribs (6).

5. The wind-resistant protection device for the down conductor clamp according to claim 1, characterized in that: The upper protective sleeve (1) and the lower protective sleeve (2) are provided with a sealing gasket (8) at the fastening point.

6. The wind-resistant protection device for the down conductor clamp according to claim 1, characterized in that: The flexible sleeve (5) has a zipper (13) on its side.

7. A method for testing a wind-resistant protective device for a down conductor clamp, characterized in that: The wind-resistant protection device for the down conductor clamp as described in any one of claims 1-6 specifically includes the following steps: S1. Data acquisition: The triaxial acceleration vibration sensor collects the swing angle and attitude change data of the lead wire in real time, and the vibration sensor captures the wind swing frequency, amplitude and abnormal vibration signal of the wire clamp; at the same time, the CT coil (11) collects the cable current data, such as the voltage data of non-PT lead wire or PT lead wire, as the basis for judging the wire breakage. S2. Configuration for bidirectional communication based on the MQTT protocol; S3, Logic for judging abnormal swing: S301, Threshold Reception: The device synchronizes the swing thresholds set in the cloud / WeChat mini-program in real time through the subscribed configuration topic, such as the angle threshold ±15° and the frequency threshold 5Hz, and stores them in the chip for later use. S302. Data Comparison: The cloud platform compares the received real-time oscillation data, such as angle, frequency, and amplitude, with a set threshold in real time. If the angle of a single swing exceeds the threshold or the frequency of the wind swing is consistently higher than the threshold, it is marked as an abnormal swing. If the amplitude reaches the abnormal judgment standard, such as exceeding twice the preset wind swing amplitude or exceeding 1.5 times the statistical historical swing data, it is marked as an abnormal swing. S303, Warning Trigger: After determining that there is an abnormal swing, a warning message is generated, including the abnormality type, data peak, and occurrence time. The message is published to the cloud via MQTT topic, and the abnormal data is temporarily stored locally to prevent data loss due to network interruption. S4. Determine if the wire is disconnected; S5, Early Warning / Alarm Output and Feedback.

8. The detection method for the wind-resistant protection device of the down conductor clamp according to claim 7, characterized in that: Step S2 specifically includes the following steps: S201. Connection Establishment: The main control unit accesses the network through the 4G communication module, establishes a TCP connection with the cloud server based on the MQTT protocol, completes device SN code authentication, and ensures encrypted and stable communication link. S202, Topic Subscription and Publishing: On the device side: Subscribe to configuration topics distributed from the cloud / mini-program to receive parameters such as swing angle threshold, frequency threshold, and disconnection judgment threshold; publish real-time data topics to push swing angle, frequency, amplitude, attitude data, and current / voltage monitoring values. Cloud / Mini Program side: Subscribe to real-time data topics published by devices to obtain monitoring information; publish configuration topics to send parameter adjustment instructions to devices, such as modifying the swing angle warning threshold; Data format: The transmitted data adopts JSON format, which includes device ID, acquisition timestamp, swing angle, wind swing frequency, amplitude value, line current / voltage value, and sensor status field to ensure that the data is structured and parsable.

9. The testing method for the wind-resistant protection device of the down conductor clamp according to claim 7, characterized in that: Step S4 specifically includes the following steps: S401, Data Monitoring: Real-time monitoring of line current non-PT lead or PT lead voltage data, recording the average rate of change trend of the data within 10 seconds; S402, Disconnection Criterion Triggered: Non-PT lead wire: If the current value suddenly decreases and the instantaneous value is lower than 10% of the set normal operating current, and is accompanied by a sudden change in the swing data, it is determined that the lead wire is broken. PT lead: If the voltage suddenly drops and is below 20% of the set rated voltage, combined with abnormal swing data, it is determined that the PT lead is broken. S403 Alarm Confirmation: After a disconnection is determined, the main control starts a secondary verification. It confirms that the data has not been recovered after three consecutive acquisition cycles to avoid false judgment. Then, a disconnection alarm message is generated, which includes the disconnection type, occurrence time, and line parameters.

10. The detection method for the wind-resistant protection device of the down conductor clamp according to claim 7, characterized in that: Step S5 specifically includes the following steps: S501, Information Push: After receiving the early warning / alarm information in the cloud, it forwards it to the WeChat mini program via the MQTT protocol. The mini program displays the data curve, abnormal status and location information in real time. S502, User Interaction: Users can adjust threshold parameters through a mini-program. The parameters are sent to the device via the MQTT configured topic. After receiving the parameters, the main controller updates the configuration and sends confirmation information to the cloud, forming a closed loop. S503, Operation and Maintenance Collaboration: When the abnormal state persists, the system pushes SMS / APP notifications to operation and maintenance personnel through the 4G communication module, and at the same time, retains the abnormal data to the cloud to provide a basis for condition-based inspection and predictive maintenance.

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