A multi-stage damping and anti-dance control device and method for transmission line

Abstract

The present invention relates to a multi-stage damping, deflection suppression and anti-dance control device and method for a transmission line, comprising a control system, wherein the control system is elastically connected to a multi-stage energy dissipation mechanism, the control system is connected to one end of a first pull wire, the other end of the first pull wire is used to connect to the transmission line and is provided with a monitoring system, the monitoring system is connected to the control system to transmit collected information to the control system, the multi-stage energy dissipation mechanism is elastically connected to a support plate, the support plate is connected to one end of a second pull wire, the other end of the second pull wire is used to connect to a ground foundation, the multi-stage energy dissipation mechanism comprises an outer shell, both sides of the outer shell are elastically connected to the control system and the support plate respectively, a collision friction damping component and an eddy current damping component and a magnetorheological fluid damping component connected to the control system are provided in the outer shell, and the control device of the present invention makes up for the shortcomings of traditional vibration reduction measures.

Description

Technical Field

[0001] The present invention relates to the technical field of disaster prevention and mitigation for transmission lines, and in particular to a multi-stage damping, deflection suppression and anti-dance control device and method for transmission lines. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Conductor galloping and windage on transmission lines are major challenges facing power systems. They not only affect the safety and reliability of transmission lines, but also pose a significant threat to their normal operation, bringing additional challenges to power system maintenance and management. The potential failures they cause increase maintenance costs and frequency, further affecting the operational efficiency of the power system. The specific hazards are mainly reflected in the following aspects:

[0004] Transmission line galloping refers to a low-frequency, large-amplitude self-excited vibration phenomenon caused by conductors under specific conditions, such as icing and wind excitation. Galloping may lead to a series of serious consequences such as wind-induced flashover tripping of transmission lines, damage to hardware, damage to insulators, broken strands or wires of conductors, and even damage to tower materials and foundations. The occurrence of galloping mainly depends on three factors: icing, wind excitation (wind speed and direction), and line structural parameters. After the conductor is iced, eccentric icing may occur under the action of wind, causing the conductor to twist and oscillate under wind excitation, forming galloping. The occurrence of galloping is not only closely related to meteorological conditions, but also related to factors such as topography, landform, line direction, and tower structure.

[0005] Transmission line windage refers to the phenomenon in which conductors deviate from their vertical position due to wind forces. This includes jumper windage, phase-to-phase windage, and insulator windage. Jumper windage occurs when strong winds affect the jumper on the corner tower, shortening the distance between the jumper and the tower, leading to jumper discharge. Phase-to-phase windage refers to the shortened electrical distance between conductors under strong winds, causing discharge between conductors of different phases. Insulator windage refers to the tilt angle of the insulator string relative to the tower under the influence of wind. Severe weather conditions are a contributing factor to windage flashover accidents. Once a windage trip occurs, the coincidence rate is low, increasing the probability of line outage.

[0006] To address the issues of transmission line sway and wind deflection, practical projects often employ measures such as installing weights and guy wires to suppress undesirable conductor vibration. The installation of weights can increase the vertical load on the line, improving its stability under wind and other external forces, reducing sway and vibration, and minimizing dynamic loads caused by wind. However, this increases the overall weight of the transmission line, complicating maintenance, and in some extreme weather or terrain conditions, weights may not function as intended. Guy wires effectively increase the stability of transmission lines, adapting to diverse environments and needs, reducing line sway and vibration, improving power transmission stability, and reducing power losses. However, this carries high maintenance costs, and due to changes in wind speed, guy wires can become overly taut or overly loose, making them unable to cope with winds of varying amplitudes. Summary of the Invention

[0007] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a multi-stage damping deflection suppression and anti-dancing control device for transmission lines. By controlling the multi-stage damping devices to start working from low amplitude to high amplitude respectively, and finally working together at high amplitude, it can be used to suppress the wind deflection problem of transmission lines and prevent the transmission lines from dancing, thereby making up for the shortcomings of traditional vibration reduction measures.

[0008] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0009] In the first aspect, an embodiment of the present invention provides a multi-stage damping, deflection suppression and anti-dance control device for a transmission line, comprising a control system, the control system being elastically connected to a multi-stage energy dissipation mechanism, the control system being connected to one end of a first pull wire, the other end of the first pull wire being used to connect to the transmission line and being provided with a monitoring system, the monitoring system being connected to the control system to transmit the collected information to the control system, the multi-stage energy dissipation mechanism being elastically connected to a support plate, the support plate being connected to one end of a second pull wire, the other end of the second pull wire being used to connect to a ground foundation, the multi-stage energy dissipation mechanism comprising an outer shell, the two sides of the outer shell being elastically connected to the control system and the support plate respectively, the outer shell being provided with a collision friction damping component and an eddy current damping component and a magnetorheological fluid damping component connected to the control system.

[0010] Optionally, the monitoring system includes two vertically arranged fans, a speed detection element is installed on the fan shaft, the fan impeller can accept wind load to drive the shaft to rotate, and the speed detection element can obtain the speed of the shaft to obtain the wind speed through the shaft speed.

[0011] Optionally, the monitoring system is fixed to a hook at the end of the first pull wire, and the hook is used to be connected to the power transmission line.

[0012] Optionally, a magnetorheological fluid damping component is provided in the middle of the housing, eddy current damping components are provided on both sides of the magnetorheological fluid damping component, and a collision friction damping component is provided on the outside of the eddy current damping component.

[0013] Optionally, a partition is provided in the outer shell, and the partition and the shell wall form a collision chamber for setting a collision friction damping component. A limit baffle is provided in the collision chamber, and the limit baffle is elastically connected to the bottom surface of the collision chamber. A plurality of damping particles of different masses are provided in the collision chamber above the limit baffle.

[0014] Optionally, an elastic buffer layer is provided on the inner side of the collision chamber.

[0015] Optionally, the eddy current damping assembly includes at least one group of iron cores, the same group includes two iron cores fixed to the outer shell and arranged parallel to each other, an excitation winding is wound around the iron cores, a conductor plate is provided in the space between the two iron cores, the conductor plate extends to the bottom of the outer shell and is fixed to the support plate, the conductor plate is slidably connected to the outer shell, and the excitation winding is connected to the power supply element in the control system.

[0016] Optionally, the magnetorheological fluid damping assembly includes a cylinder with a piston slidably connected inside the cylinder, piston rods connected on both sides of the piston, the piston rods extending to the outside of the outer shell, the piston rod on one side connected to the shell of the control system, and the piston rod on the other side connected to the support plate, the piston divides the space in the cylinder into a first space and a second space, magnetorheological fluid is injected into the first space and the second space, the first space and the second space are connected by a connecting pipe, an electromagnetic induction coil is wrapped around the periphery of the cylinder, and the electromagnetic induction coil is connected to the power supply element in the control system.

[0017] Optionally, a first spring is provided between the housing and the shell of the control system, and a second spring is provided between the housing and the support plate.

[0018] In a second aspect, an embodiment of the present invention provides a method for operating the transmission line multi-stage damping, deflection suppression and anti-dance control device according to the first aspect:

[0019] The monitoring system monitors the wind speed in real time and transmits the monitored wind speed information to the control system;

[0020] When the wind speed information received by the control system is not greater than a set first threshold, the control system controls the eddy current damping component and the magnetorheological fluid damping component to stop working, and performs vibration reduction and energy dissipation through the collision friction damping component;

[0021] When the wind speed information received by the control system is greater than a set first threshold value and not greater than a set second threshold value, the control system controls the eddy current damping component to work, and the collision friction damping component and the eddy current damping component work together to reduce vibration and dissipate energy;

[0022] When the wind speed information received by the control system is greater than the second set threshold, the control system controls the eddy current damping component and the magnetorheological fluid damping component to work, and the collision friction damping component, the eddy current damping component and the magnetorheological fluid damping component work together to reduce vibration and consume energy.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. The deflection and anti-dance control device of the present invention is provided with a monitoring system, a control system and a multi-stage energy dissipation mechanism, and is provided with a collision friction damping component and an eddy current damping component and a magnetorheological fluid damping component connected to the control system. The monitoring system can obtain the wind speed in real time and transmit it to the control system. The control system can control the use of the collision friction damping component to work alone to reduce vibration and consume energy, or the collision friction damping component and the eddy current damping component to work together to reduce vibration and consume energy, or the collision friction damping component, the eddy current damping component and the magnetorheological fluid damping component to work together to reduce vibration and consume energy, according to the size of the wind speed. The strength of the damping effect can be automatically adjusted according to the size of the wind speed to prevent the damping effect from being too strong or too weak. In the case of changing wind speed, the guy wire is avoided from being over-tightened or over-relaxed, and the effect of weakening the guy wire to prevent wind deflection and dance is avoided.

[0025] 2. In the anti-deviating and anti-dancing control device of the present invention, the spaces on both sides of the piston in the magnetorheological fluid damping assembly are connected by a connecting tube. When the magnetorheological fluid on one side of the piston is squeezed, it will flow into the space on the other side of the piston through the connecting tube, thereby generating an inertial force, which has the effect of amplifying the damping effect, improving the vibration reduction and energy consumption effect of the magnetorheological fluid damping assembly, and helping to avoid the dancing of the transmission line. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0027] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present invention;

[0028] Figure 2 This is a schematic diagram of a multi-stage energy dissipation mechanism according to embodiment 1 of the present invention;

[0029] Among them, 1. horizontal fan, 2. longitudinal fan, 3. first pull wire, 4. controller, 5. battery, 6. support plate, 7. iron core, 8. excitation winding, 9. conductor plate, 10. damping particles, 11. limit baffle, 12. third spring, 13. connecting ring, 14. first spring, 15. magnetorheological fluid, 16. electromagnetic induction coil, 17. piston, 18. connecting pipe, 19. liquid cylinder, 20. second pull wire, 21. second spring. DETAILED DESCRIPTION

[0030] Example 1

[0031] The embodiment of the present invention provides a multi-stage damping and anti-dance control device, such as Figure 1 As shown, it includes a control system, a monitoring system, a first pull wire 3, a second pull wire 8, a support plate 6 and a multi-stage energy dissipation mechanism. The control system and the multi-stage energy dissipation mechanism are elastically connected through a spring. The top of the multi-stage energy dissipation mechanism is elastically connected to the shell of the control system through a spring. The bottom of the multi-stage energy dissipation mechanism is elastically connected to the support plate 6 through a spring. The shell of the control system is connected to one end of the first pull wire 3. The other end of the first pull wire 3 is provided with a hook, which is used to connect to the transmission line. The hook is provided with a monitoring system for monitoring wind speed. The support plate 6 is connected to one end of the second pull wire 20, and the other end of the second pull wire 20 is used to connect to the ground foundation.

[0032] The control system includes a housing, inside which a controller 4 and a power supply element are arranged. The power supply element is a battery 5 for supplying power to the monitoring system and electrical components in the multi-stage energy consumption mechanism.

[0033] In this embodiment, the monitoring system includes two vertically arranged fans, one is a longitudinal fan 2 arranged longitudinally, and the other is a transverse fan 1 arranged transversely. The fan includes a rotating shaft, which is rotatably connected to the bracket, and the bracket is fixed on the hook at the end of the first pull wire. The rotating shafts of the two fans are arranged vertically, and multiple impellers are arranged circumferentially on the rotating shafts. The impellers can accept wind loads and drive the rotating shafts to rotate around the axis of the rotating shafts under the action of the wind loads. A speed detection element is installed on the rotating shaft. The speed detection element can use an existing speed sensor. The speed sensor is connected to the controller in the control system through a signal line for transmitting the collected speed information to the controller 4. The controller 4 can convert the speed into wind speed based on the received speed information in combination with the existing flow rate calculation formula, thereby realizing real-time acquisition of wind speed.

[0034] This monitoring system uses this method to obtain wind speed, boasting a simple structure and low cost, making it suitable for general meteorological observation and environmental monitoring. Transverse and longitudinal winds are the primary influences on transmission lines, so in this embodiment, two fans, longitudinal and transverse, are used for monitoring, forming a cross-coordinate axis, enabling measurement and control of wind speed in any direction on the horizontal circumference.

[0035] like Figure 2 As shown, the multi-stage energy dissipation mechanism is internally provided with a collision friction damping component, an eddy current damping component and a magnetorheological fluid damping component connected to a control system.

[0036] The multi-stage energy dissipation mechanism of this embodiment is divided into three levels, from low to high, namely collision friction damping component, eddy current damping component and magnetorheological fluid damping component. They start working in sequence depending on the wind speed. When the higher-level damping component is working, the lower-level damping component does not stop working, but cooperates with the higher-level damping component to work.

[0037] When wind deflection is about to occur, energy is mainly consumed by the collision and friction damping component. When the amplitude increases further, the entire control device shows obvious relative displacement. When the wire dances slightly, the eddy current damping component starts to work. Within a wide speed range, the eddy current damping component can provide a relatively stable damping effect. When the wire dances more violently, the magnetorheological fluid damping component works to cope with low-frequency wind vibrations of different frequencies.

[0038] Specifically, the multi-stage energy dissipation mechanism includes a housing, the top wall of which is elastically connected to the bottom of the control system housing. Specifically, a first spring 14 is disposed between the top wall of the housing and the bottom of the control system housing, achieving an elastic connection between the control system housing and the multi-stage energy dissipation mechanism housing via first spring 14. One end of first spring 14 is fixedly connected to the top wall of the housing, and the other end is connected to the bottom of the control system housing via a connecting ring 13.

[0039] A plurality of second springs 21 are provided between the housing of the multi-stage energy dissipation mechanism and the support plate 6 , and the housing of the multi-stage energy dissipation mechanism and the support plate 6 are elastically connected via the plurality of second springs 21 .

[0040] A collision friction damping component, an eddy current damping component and a magnetorheological fluid damping component are arranged inside the shell.

[0041] A magnetorheological fluid damping component is provided in the middle of the inner space of the shell, eddy current damping components are provided on both sides of the magnetorheological fluid damping component, and a collision friction damping component is provided on the outer side of the eddy current damping component.

[0042] Partitions are provided on both sides of the internal space of the shell, and a collision chamber for setting a collision friction damping component is formed between the partition and the side shell wall of the shell. The inner cavity surface of the collision chamber is provided with an elastic buffer layer. Preferably, the elastic buffer layer is made of rubber material. A limit baffle 11 is provided in the collision chamber, and the limit baffle is slidably connected to the cavity surface of the collision chamber. The limit baffle can move in the collision chamber. The limit baffle 11 is elastically connected to the bottom cavity surface of the collision chamber through a third spring 12. The third spring 12 is arranged parallel to the first spring 14 and the second spring 21. A plurality of damping particles 10 with different masses are provided in the collision chamber space above the limit baffle 11. The damping particles 10 have different masses and their own natural frequencies are also different. In the face of different high-frequency wind vibrations, they can play a collision energy dissipation and vibration reduction effect. In this embodiment, the damping particles 10 are steel balls, and the steel balls are covered with SMA material. SMA material (shape memory alloy) is an intelligent material with unique memory function, which can restore its original shape under specific conditions.

[0043] In this embodiment, the collision and friction damping component consumes vibration energy through collision and friction, thereby reducing the vibration amplitude of the structure. When the transmission line is vibrated by wind, the collision damping component uses the friction between the damping particles and the surrounding collision chamber surfaces and the collision between the damping particles and the limit baffle to absorb and dissipate energy, and eventually the vibration gradually weakens until it stops.

[0044] The eddy current damping assembly includes two groups of iron cores 7, which are respectively located on both sides of the magnetorheological fluid damping assembly. The same group includes two parallel iron cores 7, which are vertically fixed to the inner side of the top shell wall of the shell. An excitation winding 8 is wound on the iron core 7. A conductor plate 9 is provided in the space between the two iron cores. The conductor plate 9 is arranged parallel to the iron core 7. The conductor plate 9 passes through the bottom shell wall of the shell and is fixedly connected to the support plate 6. The conductor plate 9 is slidably connected to the bottom shell wall of the shell. The excitation winding 8 is connected to the battery 5 in the control system through a power supply line and is powered by the battery 5.

[0045] An eddy current damper assembly is a device that uses the principle of electromagnetic induction for vibration control. Its operating principle is primarily based on the law of electromagnetic induction. Specifically, when the conductor plate 9 of the eddy current damper assembly moves in a fixed magnetic field, the movement of the conductor plate 9 generates eddy currents. These eddy currents generate an electromagnetic force opposite to the direction of motion, thereby slowing the conductor plate 9 and providing a damping effect. Because the intensity of the eddy currents is proportional to the speed of motion and the strength of the magnetic field, the damping characteristics of the eddy current damper assembly can be dynamically adjusted.

[0046] The magnetorheological damping assembly includes a liquid cylinder 19, which is fixed in the middle of the outer shell. A piston 17 is provided in the liquid cylinder 19, and the piston 17 is slidably connected to the inner surface of the liquid cylinder 19. The piston 17 can move along the axial direction of the liquid cylinder 19. Piston rods are coaxially arranged on both sides of the piston 17. The bottom end of the piston rod above the piston is fixedly connected to the center position of the upper surface of the piston. After passing through the liquid cylinder 19 and the outer shell, the piston rod is fixedly connected to the bottom of the housing of the control system. The top end of the piston rod located below is fixedly connected to the center position of the lower surface of the piston. The piston rod passes through the liquid cylinder and the outer shell and is fixedly connected to the top surface of the support plate 6.

[0047] The piston 17 divides the space in the liquid cylinder into a first space and a second space, and magnetorheological fluid 15 is provided in both the first space and the second space.

[0048] Furthermore, to form an inertia system and amplify the damping effect, the first and second spaces are connected by a connecting pipe 18 located outside the cylinder. This connection pipe 18, combined with the use of magnetorheological fluid as the liquid in the liquid inertia, creates a seamless system. When the structure experiences significant relative displacement due to wind, the piston moves accordingly, and the liquid inertia begins to provide a larger inertia coefficient, amplifying the damping effect.

[0049] A liquid inertia sensor is a structural vibration control device based on an inertia sensor element. Its operating principle is to achieve vibration control by exploiting the acceleration-dependent characteristics of its two end points. Its basic structure consists of two externally connected pipes, through which the flow of liquid generates an inertial force. When the two ends of the device experience relative motion, the liquid flowing through the pipes generates an inertial force proportional to the relative acceleration of the two ends. This structure enables the liquid inertia sensor to be used in vibration control, optimizing system performance by adjusting the inertia coefficient.

[0050] A winding drum is coaxially provided on the outer periphery of the liquid cylinder 19 , and the winding drum is fixed inside the shell. An electromagnetic induction coil 16 is wound on the winding drum, and the electromagnetic induction coil 16 is connected to the battery 5 through a power supply line and is powered by the battery 5 .

[0051] The operating principle of the MR fluid damping assembly is based on the magnetorheological effect, which states that the rheological properties of the MR fluid change under the influence of a magnetic field. When the electromagnetic induction coil 16 is energized, the generated strong magnetic field causes the MR fluid to form a chain-like and network-like structure, thereby creating resistance to the direction of motion. As the current changes, the magnetic field strength also changes, gradually returning the MR fluid to a liquid state, thereby adjusting the damping value. Simultaneously, using a pressure-driven mode, the MR fluid flows through fixed magnetic poles under pressure, in a direction perpendicular to the magnetic field. By varying the current in the electromagnetic induction coil 16, the magnetic field can be controlled, thereby varying the flow properties of the MR fluid and achieving precise control of the damping force. This design enables the MR fluid damping assembly to quickly adjust the damping effect as needed, improving the system's stability and responsiveness. Furthermore, piston 17 propels the MR fluid back and forth within the cylinder. As the fluid is squeezed toward one side of the cylinder 19, it flows through connecting tube 18 into the other side, generating an inertial force that amplifies the damping effect.

[0052] Example 2

[0053] This embodiment provides a working method of the multi-stage damping and anti-dance control device described in Example 1:

[0054] The monitoring system monitors the wind speed in real time and transmits the monitored wind speed information to the control system;

[0055] Specifically, the horizontal fan 1 is used to monitor the horizontal wind speed, and the vertical fan 2 is used to monitor the vertical wind speed, forming a cross coordinate axis, measuring and controlling the wind speed in any direction of the horizontal circumference, and transmitting the wind speed and wind frequency to the controller to start working.

[0056] When the wind speed information received by the controller 4 is not greater than the set first threshold, the controller controls the eddy current damping component and the magnetorheological fluid damping component to stop working, and performs vibration reduction and energy dissipation through the collision friction damping component;

[0057] Specifically, when the wind speed is no greater than a set first threshold, i.e., when the conductor is about to deflect, the damping particles 10, by virtue of their different natural frequencies, can resonate with various high-frequency winds, causing the damping particles to collide with each other. When the vibration energy is large enough, the damping particles will collide with the elastic buffer layer on the inner side of the collision chamber. At the same time, the third spring pushes the limit baffle 11 back and forth, causing the space where the damping particles are located to compress and expand back and forth, further consuming collision energy.

[0058] When the wind speed information received by the controller 4 is greater than the set first threshold value and not greater than the set second threshold value, the control system controls the eddy current damping component to work, and the collision friction damping component and the eddy current damping component work together to reduce vibration and dissipate energy;

[0059] Specifically, the controller 4 controls the battery 5 to supply power to the excitation winding 8, causing the eddy current damping assembly to start working. The conductor plate 9 begins to reciprocate in the fixed magnetic field due to the vibration of the first spring 14 and the second spring 21, thereby generating eddy currents. These eddy currents generate electromagnetic forces in the opposite direction of the motion, thereby slowing down the speed of the conductor plate and playing a damping role.

[0060] When the wind speed information received by the controller 4 is greater than the second set threshold, that is, when wind yaw is about to occur, it is mainly low-frequency and high-amplitude wind of different frequencies. At this time, the control system controls the operation of the eddy current damping component and the magnetorheological fluid damping component, and the collision friction damping component, the eddy current damping component and the magnetorheological fluid damping component work together to reduce vibration and consume energy.

[0061] Specifically, the controller 4 controls the battery 5 to supply power to the electromagnetic induction coil 16, causing the magnetorheological fluid damping assembly to start working. The electromagnetic induction coil 16 generates a corresponding electromagnetic field according to the frequency of the incoming wind. Due to the vibration of the first spring 14 and the second spring 21, the magnetorheological fluid 15 begins to move under the reciprocating push of the piston 17. The strong magnetic field causes the magnetic fluid to undergo rheological phenomena, forming a large number of chain structures and network structures, which generate resistance to movement in the direction of movement.

[0062] The control device and working method of this embodiment have a multi-stage energy dissipation mechanism divided into three levels: collision friction damping, eddy current damping, and magnetorheological damping, from low to high. The order in which these mechanisms start to operate is determined by the magnitude of the wind amplitude. When the high-level damping is operating, the low-level damping does not stop, but instead cooperates with the high-level damping. When wind deflection is about to occur, energy is consumed primarily by the collision of the damping particles in the collision friction damping assembly. Since each damping particle 10 has a different inherent frequency, it can cope with high-frequency wind vibrations of varying frequencies. When the amplitude increases further, the device exhibits significant relative displacement, and the conductor dances slightly, the eddy current damping assembly begins to operate. Within a wide speed range, the eddy current damper can provide a relatively stable damping effect. Due to its rapid electromagnetic induction response, it can achieve effective damping under transient conditions. When the conductor dances significantly, the magnetorheological damping assembly receives wind speed and frequency data detected by the controller, thereby changing the rheological properties of the magnetorheological fluid under the action of the magnetic field, generating resistance to movement in the direction of motion, and thus coping with low-frequency wind vibrations of varying frequencies.

[0063] The control device of this embodiment can automatically adjust the strength of the damping effect according to the wind speed to prevent the damping effect from being too strong or too weak. When the wind speed changes, it avoids the guy wire from being over-tightened or over-relaxed, and avoids weakening the guy wire's effect of preventing wind deflection and dancing.

[0064] In a further embodiment, the rotating shafts of the transverse fan 1 and the longitudinal fan 2 can also be connected to a generator fixed on the bracket, and the generator is connected to the battery 5 to charge the battery, thereby realizing the use of wind power generation as a supplementary power source and enhancing the stability of the overall operation.

[0065] The generator can adopt existing technology and will not be described in detail here.

[0066] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A multi-stage damping and anti-drifting control device for transmission lines, characterized in that: The multi-stage energy dissipation mechanism includes a control system, which is elastically connected to a multi-stage energy dissipation mechanism. The control system is connected to one end of a first cable, the other end of which is used to connect to a transmission line and is provided with a monitoring system. The monitoring system is connected to the control system to transmit collected information to the control system. The multi-stage energy dissipation mechanism is elastically connected to a support plate, the support plate is connected to one end of a second cable, the other end of which is used to connect to a ground foundation. The multi-stage energy dissipation mechanism includes a housing, both sides of which are elastically connected to the control system and the support plate, respectively. The housing includes a collision friction damping component, an eddy current damping component connected to the control system, and a magnetorheological fluid damping component. The magnetorheological fluid damping assembly includes a cylinder, a piston is slidably connected in the cylinder, piston rods are connected on both sides of the piston, the piston rods extend to the outside of the shell, the piston rod on one side is connected to the shell of the control system, and the piston rod on the other side is connected to the support plate. The piston divides the space in the cylinder into a first space and a second space. Magnetorheological fluid is injected into the first space and the second space. The first space and the second space are connected through a connecting pipe. An electromagnetic induction coil is wrapped around the outer circumference of the cylinder, and the electromagnetic induction coil is connected to the power supply element in the control system.

2. A transmission line multi-stage damping and anti-drift control device according to claim 1, characterized in that: The monitoring system includes two vertically arranged fans, and a speed detection element is installed on the fan shaft. The fan impeller can accept wind load to drive the shaft to rotate, and the speed detection element can obtain the speed of the shaft to obtain the wind speed through the shaft speed.

3. The multi-stage damping and anti-drifting control device for transmission lines according to claim 1, characterized in that: The monitoring system is fixed on a hook at the end of the first pull wire, and the hook is used for being connected to the transmission line.

4. A transmission line multi-stage damping and anti-drifting control device according to claim 1, characterized in that: A magnetorheological fluid damping component is arranged in the middle of the shell, eddy current damping components are arranged on both sides of the magnetorheological fluid damping component, and a collision friction damping component is arranged on the outer side of the eddy current damping component.

5. The multi-stage damping and anti-drifting control device for transmission lines according to claim 1, characterized in that: A partition is provided in the shell, and the partition and the shell wall of the shell form a collision chamber for setting a collision friction damping component. A limit baffle is provided in the collision chamber, and the limit baffle is elastically connected to the bottom surface of the collision chamber. A plurality of damping particles of different masses are provided in the collision chamber above the limit baffle.

6. A transmission line multi-stage damping and anti-drifting control device as claimed in claim 5, characterized in that: An elastic buffer layer is provided on the inner side of the collision chamber.

7. The multi-stage damping and anti-drifting control device for transmission lines according to claim 1, characterized in that: The eddy current damping assembly includes at least one group of iron cores, and the same group includes two iron cores fixed to the shell and arranged parallel to each other. The iron cores are wound with excitation windings. A conductor plate is provided in the space between the two iron cores. The conductor plate extends to the bottom of the shell and is fixed to the support plate. The conductor plate is slidably connected to the shell, and the excitation winding is connected to the power supply element in the control system.

8. The multi-stage damping and anti-drifting control device for transmission lines according to claim 1, characterized in that: A first spring is provided between the shell and the housing of the control system, and a second spring is provided between the shell and the support plate.

9. An operating method of the transmission line multi-stage damping and anti-drifting control device according to any one of claims 1 to 8, characterized in that: The monitoring system monitors the wind speed in real time and transmits the monitored wind speed information to the control system; When the wind speed information received by the control system is not greater than a set first threshold, the control system controls the eddy current damping component and the magnetorheological fluid damping component to stop working, and performs vibration reduction and energy dissipation through the collision friction damping component; When the wind speed information received by the control system is greater than a set first threshold value and not greater than a set second threshold value, the control system controls the eddy current damping component to work, and the collision friction damping component and the eddy current damping component work together to reduce vibration and dissipate energy; When the wind speed information received by the control system is greater than the second set threshold, the control system controls the eddy current damping component and the magnetorheological fluid damping component to work, and the collision friction damping component, the eddy current damping component and the magnetorheological fluid damping component work together to reduce vibration and consume energy.

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