Universe self-adaptive combined type anti-torque system and anti-torque method

Abstract

The invention belongs to the technical field of electric power engineering. According to the global self-adaptive combined type anti-torsion system and the anti-torsion method, the anti-torsion ring is used for connecting the fixing rod and the split sub-conductor anti-torsion assembly, so that the problem of multi-strand overall galloping and torsion of the split conductor is solved; the defects that in the prior art, a spacer is additionally arranged, the capacity of adapting to a complex environment is weak, a stay wire is arranged to be easily loosened or excessively tensioned in strong wind / turbulent flow, and stress concentration of a tower is caused by installation of a pendulum bob type anti-torsion device are overcome, and the self-adaptive dynamic response capacity of a system to galloping torsion of different intensities is improved; through cooperation of the eddy current effect of cutting magnetic induction lines by the double curved bars and energy storage and energy release of the gas spring, the energy grading dissipation efficiency is improved, the adaptability of the system to complex working conditions is also enhanced through the flexible connecting structure of the connecting and fixing rods, the local stress peak value caused by a traditional device is avoided, and the situation that energy dissipation is not thorough due to a single energy dissipation mode is prevented.

Description

Technical Field

[0001] This invention relates to the field of power engineering technology, and in particular to a global adaptive composite anti-torsion system and anti-torsion method. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] In low-temperature and high-humidity environments prone to icing, transmission line failure under the combined load of wind and ice has become a key manifestation of power system operation failures, and systematic prevention and control research is urgently needed. Under the coupling effect of wind and ice, the failure modes of transmission lines are mainly manifested as the overall galloping and twisting of multiple strands of split conductors and the self-twisting of the surface of split sub-conductors due to icing imbalance. The specific hazards are mainly reflected in the following aspects: The galloping and twisting of transmission lines refers to the torsional motion caused by the torque excitation due to the spatial distribution difference of the aerodynamic force and icing load on each split sub-conductor under the coupling of external conditions such as icing and wind excitation. Galloping and twisting often cause the following disasters: (1) reducing the spacing between split conductors, aggravating corona discharge, causing power transmission loss, and the strong oxidizing gas generated by corona discharge corrodes the protective coating on the surface of the conductor, accelerating metal fatigue aging; (2) reducing the spacing between sub-conductors increases coherence, destroys aerodynamic stability, and increases the probability of sub-span oscillation.

[0004] Icing imbalance and self-torsion in split conductors of transmission lines refers to the dynamic instability caused by the coupling of wind-induced asymmetric icing load and conductor mechanical properties in low-temperature and high-humidity environments. In this environment, wind causes icing on one side of the conductor, and the torsional torque generated by the uneven mass drives the iced side to turn in the direction of gravity. After the conductor twists, a new area becomes windward and iced, disrupting the balance and triggering a new round of torsion. This process repeats, leading to continuous conductor torsion, increasing torsional stress, changing the icing shape from airfoil-shaped to elliptical or circular, and causing a surge in mass, threatening the safety of the power system. To solve these problems, measures such as installing spacers, guy wires, and pendulum-type anti-torsion devices are commonly adopted. Adding spacers can suppress the reduction in conductor spacing caused by galloping and torsion, but the required installation distance varies depending on the degree of torsion, making it difficult to adapt to complex environments; guy wire control addresses the causes of galloping and limits conductor vibration to improve stability, but it is easily affected by wind speed fluctuations and is at risk of slack failure or over-tensioning in strong winds or turbulent flow; pendulum-type anti-torsion devices suppress icing torsion based on the principle of torque balance, but the additional torque they generate increases the stress at the tower suspension points, bringing new structural safety hazards. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a global adaptive composite anti-torsion system and method, which solves the problem of overall galloping and torsion of multi-strand split conductors. It overcomes the drawbacks of traditional methods such as adding spacers, which have weak adaptability to complex environments, the ease with which guy wires can loosen or become over-tensioned in strong winds / turbulent flow, and the stress concentration on towers caused by installing pendulum-type anti-torsion devices. This invention improves the system's adaptive dynamic response capability to galloping and torsion of different intensities.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a global adaptive composite anti-torsion system.

[0007] A global adaptive composite anti-torsion system includes: an anti-torsion ring, a connecting and fixing rod, and a split sub-conductor anti-torsion assembly; The anti-torsion ring includes an anti-torsion ring shell, an auxiliary energy-dissipating crank, and a transmission energy-dissipating crank. The anti-torsion ring shell contains a permanent magnet to create the magnetic field environment required for the eddy current effect. The auxiliary energy-dissipating crank and the transmission energy-dissipating crank slide freely within the circumferential slide rail of the anti-torsion ring shell. When sliding, the auxiliary energy-dissipating crank and the transmission energy-dissipating crank cut magnetic field lines to generate the eddy current effect, converting the kinetic energy of the auxiliary energy-dissipating crank and the transmission energy-dissipating crank into internal energy dissipation. The connecting and fixing rod includes a first rod, a second rod, a third rod, and a fourth rod that are rotatably sleeved on the anti-torsion assembly of the corresponding split conductor. One end of the first rod, the second rod, the third rod, and the fourth rod are respectively connected to the corresponding energy-dissipating crank in the slide rail. A gas spring is provided between the adjacent auxiliary energy-dissipating crank and the energy-dissipating crank. The other end of the first rod, the second rod, the third rod, and the fourth rod are respectively provided with end connecting ears. The sides of the first rod, the second rod, the third rod, and the fourth rod are respectively provided with side connecting ears. The end connecting ear of the first member is movably connected to the side connecting ear of the second member, the end connecting ear of the second member is movably connected to the side connecting ear of the third member, the end connecting ear of the third member is movably connected to the side connecting ear of the fourth member, and the end connecting ear of the fourth member is movably connected to the side connecting ear of the first member.

[0008] In one implementation of the first aspect of the present invention, the end connecting lug of the first rod is vertically and movably connected to the side connecting lug of the second rod by bolts, the end connecting lug of the second rod is vertically and movably connected to the side connecting lug of the third rod by bolts, the end connecting lug of the third rod is vertically and movably connected to the side connecting lug of the fourth rod by bolts, and the end connecting lug of the fourth rod is vertically and movably connected to the side connecting lug of the first rod by bolts.

[0009] In one implementation of the first aspect of the present invention, the gas spring is a bladder-type gas spring.

[0010] In one implementation of the first aspect of the present invention, the anti-torsion assembly for the split conductor includes: a rotating collar, a fixed collar, and an elastic tie rod, wherein the rotating collar and the fixed collar are connected by the elastic tie rod.

[0011] As a further limitation of the first aspect of the present invention, the elastic rod is hollow, and a vibration damping and energy dissipation bead is disposed in the cavity. Both the inner surface of the cavity and the outer surface of the vibration damping and energy dissipation bead are covered with an elastic rubber layer.

[0012] As a further limitation of the first aspect of the present invention, a tie rod friction pad is provided between the elastic tie rod and the split sub-lead, a rotating collar rubber pad is provided at the connection between the rotating collar and the split sub-lead, and a fixed collar rubber pad is provided at the connection between the fixed collar and the split sub-lead.

[0013] In one implementation of the first aspect of the present invention, both the auxiliary energy-consuming crank and the energy-transmitting crank are arc-shaped.

[0014] In one implementation of the first aspect of the present invention, the anti-torsion ring housing has a radial opening, and the circumferential inner cavity of the anti-torsion ring housing serves as a circumferential slide rail.

[0015] Secondly, the present invention provides a global adaptive composite anti-torsion method.

[0016] A globally adaptive composite anti-torsion method, utilizing the globally adaptive composite anti-torsion system of the first aspect of this invention, includes the following processes: When the split sub-conductor undergoes overall dancing and twisting, the connecting and fixing rod connected to the split sub-conductor drives the energy-dissipating crank to rotate within the circumferential slide rail of the anti-torsion ring shell, transmitting the magnetic field generated by the energy-dissipating crank cutting the permanent magnet array and stimulating the eddy current effect. The energy-dissipating crank synchronously pushes the air spring between the energy-dissipating crank and the auxiliary energy-dissipating crank to compress and deform, causing the auxiliary energy-dissipating crank to generate relative motion, so that the auxiliary energy-dissipating crank also participates in the process of cutting magnetic field lines, forming an eddy current energy dissipation mechanism in which the energy-dissipating crank and the auxiliary energy-dissipating crank work together. When the torsional excitation weakens, the gas spring releases the previously stored elastic potential energy, which drives the auxiliary energy-dissipating crank and the transmission energy-dissipating crank to continue moving through the rebound.

[0017] Thirdly, the present invention provides a global adaptive composite anti-torsion method.

[0018] A globally adaptive composite anti-torsion method, utilizing the globally adaptive composite anti-torsion system of the first aspect of this invention, includes the following processes: When the surface of the split conductor forms an imbalance due to icing, the twisting of the split conductor causes the fixed collar to rotate. The spatial structure formed by the connecting fixed rod and the anti-torsion ring fixes the rotating collar. The rotating collar and the fixed collar rotate relative to each other, causing the elastic tie rod to twist on the surface of the split conductor. The degree of twisting varies with the degree of twisting of the split conductor. When the split conductor twists due to icing imbalance, the twisting of the split conductor causes the fixed collar to rotate. The spatial structure formed by the connecting fixed rod and the anti-torsion ring fixes the rotating collar. The rotating collar and the fixed collar rotate relative to each other, and the fixed collar and the rotating collar generate relative angular displacement, which in turn pulls the elastic tie rod to undergo helical twisting deformation. The elastic tie rod in the twisted state generates contact pressure with the split conductor through the surface friction pad. The resulting frictional force is distributed along the axial direction of the split conductor and synthesizes into an equivalent torsional moment. If the split conductor is tensioned due to the function of the split conductor anti-torsion component, and then vibrates at high frequency and low amplitude under the action of wind, the vibration damping and energy dissipation beads in the elastic rod will dissipate energy through collision and friction.

[0019] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes a composite system consisting of an anti-torsion ring (with a built-in permanent magnet, auxiliary energy-dissipating curved rod, energy-transmitting curved rod, and gas spring; the double curved rod can slide along a circumferential guide rail), a connecting and fixing rod (four rods vertically and movably connected by bolts, connecting the energy-transmitting curved rod and fitted with an anti-torsion component), and a split conductor anti-torsion component. This solves the problem of multi-strand overall galloping and torsion of split conductors, and overcomes the limitations of traditional methods such as adding spacers, which have weak adaptability to complex environments; guy wires that easily loosen or become over-tensioned in strong winds / turbulent flow; and the stress on the tower caused by installing a pendulum-type anti-torsion device. The drawbacks of force concentration are mitigated by improving the system's adaptive dynamic response capability to galloping torsion of varying intensities. By combining the eddy current effect of the hyperbola cutting magnetic field lines with the energy storage and release of the gas spring, the energy dissipation efficiency is enhanced through staged energy dissipation. The flexible connection structure of the connecting rod also enhances the system's adaptability to complex working conditions, avoids local stress peaks caused by traditional devices, prevents incomplete energy dissipation caused by a single energy dissipation method, and reduces the risks of reduced spacing between split conductors, corona discharge, corrosion of the protective coating on the conductor surface, and metal fatigue aging caused by galloping torsion.

[0020] This invention utilizes an anti-torsion component consisting of a rotating collar, a fixed collar, and a hollow, energy-dissipating elastic rod with an internal elastic rubber layer, along with a friction pad on the rod and a rubber pad on the collar. This solution addresses the problem of self-torsion due to icing imbalance in split sub-conductors and the high-frequency, low-amplitude vibrations generated by the component's action. It overcomes the drawbacks of traditional pendulum-type anti-torsion devices, which require independent installation on each sub-conductor, increasing line load, and only suppressing torsion without addressing vibration or torque concentration. The invention improves the component's adaptive adjustment capability to torsion levels. As conductor torsion intensifies, the elastic rod's twisting degree increases, and the counter-torque simultaneously strengthens. The energy-dissipating vibration beads enhance the damping effect through collision and friction, while the rubber pad and friction pad strengthen buffering and torque dispersion, preventing stress accumulation in the split sub-conductors due to continuous torsion, preventing additional damage to the conductors from high-frequency, low-amplitude vibrations, reducing maintenance costs and line burden associated with independent installation of multiple sub-conductors, and adapting to the differentiated torsion control needs in complex icing environments.

[0021] This invention utilizes the aforementioned anti-torsion system, employing a step-by-step approach: eddy current energy dissipation in the hyperbolic rod during overall galloping torsion, energy storage and release in the gas spring, torsion feedback from the elastic tie rod during icing self-torsion, and frictional energy dissipation by the vibration-damping energy-dissipating beads during high-frequency vibration. This solves the comprehensive problems of overall galloping torsion of split conductors, self-torsion of sub-conductors under icing, and subsequent high-frequency vibration. It overcomes the shortcomings of traditional methods, which can only handle single torsion types, have untimely energy dissipation (e.g., spacer bars cannot dissipate energy), have delayed response (e.g., guy wires are difficult to adapt to wind speed changes), and cannot synchronously respond to vibration. It improves the efficiency of graded energy dissipation (instantaneous electromagnetic energy dissipation to reduce torsion, gas spring energy storage buffering, and delayed energy release for complete dissipation), enhances the accuracy (dynamic adjustment of reaction torque with torsion) and timeliness of anti-torsion control, improves the system's disaster resistance under wind-ice coupling conditions, avoids intensified torsion and accumulation of vibration energy, prevents reduced conductor spacing, corona discharge, excessive tower stress, and conductor fatigue damage, and ensures the safe operation of the power system.

[0022] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0024] Figure 1 A three-dimensional structural diagram of a global adaptive composite anti-torsion system provided as an exemplary embodiment of the present invention; Figure 2 A three-dimensional structural diagram of an anti-torsion ring provided for an exemplary embodiment of the present invention; Figure 3A three-dimensional structural diagram of the system connection provided as an exemplary embodiment of the present invention; Figure 4 A three-dimensional structural diagram of a split-lead anti-torsion assembly provided for an exemplary embodiment of the present invention; Figure 5 A three-dimensional structural diagram (after helical twisting deformation) of a split conductor anti-torsion assembly provided as an exemplary embodiment of the present invention. Figure 6 A cross-sectional view of a split-lead anti-torsion assembly provided as an exemplary embodiment of the present invention; The components include: 1. Anti-torsion ring; 2. Connecting and fixing rod; 3. Split conductor anti-torsion assembly; 4. Anti-torsion ring shell; 5. Auxiliary energy-dissipating crank; 6. Energy-transmitting crank; 7. Gas spring cavity; 8. Connecting and fixing rod body; 9. Rubber buffer pad; 10. Connecting ear; 11. Bolt; 12. Rotating collar; 13. Rotating collar rubber pad; 14. Elastic tie rod; 15. Tie rod friction pad; 16. Fixing collar; 17. Fixing collar rubber pad; 18. Split conductor; 19. Tie rod cavity; 20. Vibration-damping energy-dissipating bead. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0027] like Figure 1 As shown, this implementation proposes a global adaptive composite anti-torsion system, including an anti-torsion ring 1, a connecting and fixing rod 2, and a split sub-conductor anti-torsion component 3.

[0028] In this implementation, the anti-torsion ring 1 is the core for suppressing the overall dancing and twisting of the split conductor. The anti-torsion ring shell 4 is a hollow cavity structure with a radial opening design. Its circumferential inner cavity directly forms a circumferential slide rail, providing sliding guidance for the auxiliary energy-dissipating crank 5 and the energy-transmitting crank 6, ensuring that the motion trajectory of the two cranks is stable and does not deviate from the constraint. The anti-torsion ring shell 4 has a fixed integrated permanent magnet array inside. The permanent magnets are arranged in a ring at equal intervals to form a uniform magnetic field environment required for the eddy current effect, providing a magnetic field basis for the subsequent cutting of magnetic field lines by the crank.

[0029] In this implementation, both the auxiliary energy-dissipating crank 5 and the energy-transmitting crank 6 are arc-shaped rigid structures, which are parallelly embedded in the circumferential slide rail of the anti-torsion ring shell 4 and can slide freely along the slide rail. The length of the two cranks matches the curvature of the slide rail, ensuring that they always maintain their relative position with the permanent magnet array during the sliding process, thus meeting the requirements for cutting magnetic field lines. Adjacent auxiliary energy-dissipating crank 5 and energy-transmitting crank 6 are connected by a bladder-type gas spring. The gas spring is installed as a whole in the gas spring cavity 7 (the gas spring cavity 7 is a cavity structure reserved on the anti-torsion ring shell 4 to accommodate the gas spring). The two ends of the gas spring are fixed to the ends of the auxiliary energy-dissipating crank 5 and the energy-transmitting crank 6 respectively by welding, ensuring that the gas spring can be synchronously driven to compress or rebound when the crank moves.

[0030] In this implementation, the connecting and fixing rod 2 undertakes three functions: module connection, attitude maintenance, and force transmission. The core of the connecting and fixing rod 2 is the connecting and fixing rod body 8, which includes a first rod, a second rod, a third rod, and a fourth rod (the four have the same structure and are collectively referred to as the connecting and fixing rod body 8). One end of each of the four sets of connecting and fixing rod bodies 8 is fixedly connected to the energy-dissipating curved rod 6 of the anti-torsion ring 1 through an integral molding process (rotatably sleeved on the corresponding split sub-conductor anti-torsion component, so the connection between the connecting and fixing rod body 8 and the energy-dissipating curved rod 6 must ensure rigidity to avoid force transmission loss).

[0031] The other ends of the four sets of connecting and fixing rods 8 are rotatably sleeved on the outside of the rotating collar 12 of the split conductor anti-torsion assembly 3, and rubber buffer pads 9 are fitted at the connection points. The rubber buffer pads 9 are fixed to the inner wall of the sleeve hole of the connecting and fixing rods 8 by interference fit, which on the one hand realizes buffering and vibration reduction during rotation, and on the other hand avoids hard contact wear between the connecting and fixing rods 8 and the rotating collar 12. Each set of connecting and fixing rods 8 has an end connecting lug 10 at the other end and a side connecting lug 10 on the side (the end and side connecting lugs have the same structure and are collectively referred to as connecting lugs 10). The four sets of rods form a finely adjustable closed-loop structure through the connecting lugs 10 and bolts 11: The end connecting lug of the first rod and the side connecting lug of the second rod are vertically and movably connected by bolts 11. After the bolts 11 pass through the through holes of the two connecting lugs, they are locked with nuts, leaving a rotation gap of 0.5-1mm to ensure that they can adapt to changes in angle. The end connecting lug of the second rod and the side connecting lug of the third rod, the end connecting lug of the third rod and the side connecting lug of the fourth rod, and the end connecting lug of the fourth rod and the side connecting lug of the first rod are all connected by the same bolts 11 vertically and movably, thus forming a quadrilateral stable structure that can adapt to the slight posture adjustment when the conductor is twisted.

[0032] The anti-torsion assembly 3 for split sub-conductors is designed to address the self-torsion caused by ice accumulation and imbalance of the sub-conductors, as well as high-frequency low-amplitude vibration. The connection relationship is as follows: The anti-torsion assembly 3 for split sub-conductors includes a rotating collar 12 and a fixed collar 16. There are two fixed collars 16, which are symmetrically arranged on both sides of the rotating collar 12. All three are coaxially arranged and are fitted onto the outside of the split sub-conductor 18. The inner wall of the rotating collar 12 is fixed with a rotating collar rubber pad 13 by adhesive bonding, and the inner wall of the fixed collar 16 is fixed with a fixed collar rubber pad 17 by adhesive bonding. Both types of rubber pads are tightly fitted to the outer surface of the split sub-conductor 18, achieving a triple function of flexible fixing, buffering, and corrosion prevention.

[0033] The rotating collar 12 is connected to the fixed collars 16 on both sides by three sets of elastic rods 14 evenly distributed along the circumference. The two ends of the elastic rods 14 are welded to the outer wall of the rotating collar 12 and the outer wall of the fixed collar 16, respectively, to ensure that the rods can be deformed synchronously when the collars rotate relative to each other. The elastic rods 14 are hollow structures, forming a rod cavity 19 inside. The rod cavity 19 is filled with multiple vibration damping and energy dissipation beads 20, and the inner surface of the rod cavity 19 and the outer surface of the vibration damping and energy dissipation beads 20 are coated with an elastic rubber layer through a vulcanization process to avoid damage to the components caused by hard impact.

[0034] The outer surface of the elastic tie rod 14 is fixed with a tie rod friction pad 15 by adhesive bonding. The tie rod friction pad 15 is made of rubber with a high coefficient of friction. In its natural state, it is in slight contact with the outer surface of the split conductor 18. When twisted and deformed, it can fit tightly to generate friction.

[0035] The rotating collar 12 and the fixed collar 16 of the split sub-conductor anti-torsion assembly 3 are flexibly fixed to the split sub-conductor 18 through internal rubber pads (13, 17) to ensure that they move synchronously with the conductor and do not damage the conductor. The anti-torsion ring 1 is suspended on the outside of the split sub-conductor 18 through the connecting fixing rod 2, maintaining a preset distance of 5-10cm from the split sub-conductor 18 to avoid direct contact and wear, while ensuring that the torsional force transmission path is unobstructed.

[0036] This invention addresses three operating conditions: overall galloping and torsion of split conductors, icing imbalance of split sub-conductors, self-torsion, high-frequency low-amplitude vibration, and adaptive torsional vibration reduction through the synergy of various components. Specifically, it includes: Working condition 1: The working process when multiple strands of a split conductor are dancing and twisting as a whole.

[0037] When the combined wind-ice load causes the multiple strands of the split conductor to gallop and twist under low temperature and high humidity conditions, the system achieves staged energy dissipation through the synergistic effect of eddy current energy dissipation of the anti-torsion ring 1 and energy storage and release of the gas spring. The specific process is as follows: When the split conductor as a whole is dancing and twisting, the torsional force of the split sub-conductor 18 is transmitted to the connecting fixing rod 2 through the fixing collar 16 and rotating collar 12 of the split sub-conductor anti-torsion assembly 3, driving the four sets of connecting fixing rods 8 to rotate synchronously around the axis of the split sub-conductor 18. The connecting fixed rod 8 drives the energy-transmitting curved rod 6 fixed thereto to rotate along the circumferential slide rail of the anti-torsion ring outer shell 4 (the anti-torsion ring outer shell 4 remains relatively stationary due to inertia, resulting in relative motion between the curved rod and the outer shell). Based on the force transmission principle of rigid body mechanics, the synchronous transmission of torsional motion is achieved through a rigid connecting chain of wire-ring-connecting fixed rod-transmitting energy-dissipating curved rod; the guiding role of the slide rail ensures the stability of the motion trajectory of the energy-dissipating curved rod 6 and avoids jamming; the torsional kinetic energy of the split wire is converted into the mechanical kinetic energy of the energy-dissipating curved rod 6, providing an energy carrier for subsequent energy-dissipating links, while the guide of the slide rail ensures motion stability and avoids component jamming and damage.

[0038] When the energy-dissipating crank 6 slides within the slide rail, it cuts the magnetic field generated by the permanent magnet array inside the anti-torsion ring shell 4. According to the law of electromagnetic induction (a changing magnetic field generates an induced current), a closed induced current (i.e., an eddy current) is generated within the energy-dissipating crank 6. The eddy current is subjected to an electromagnetic damping force opposite to the direction of motion in the magnetic field (following Lenz's law: the effect of the induced current always opposes the cause that caused the induced current). The electromagnetic damping force converts the mechanical kinetic energy of the energy-dissipating crank 6 into heat energy and dissipates it naturally, achieving the initial energy dissipation. At the same time, the energy-dissipating crank 6 moves, pushing the adjacent bladder-type gas spring to compress and deform (the gas spring is located inside the gas spring cavity 7). The gas spring converts the remaining kinetic energy that was not dissipated by the eddy current into elastic potential energy through elastic deformation and stores it. Simultaneously, the reaction force of the gas spring drives the auxiliary energy-dissipating crank 5 to rotate along the slide rail in the same direction as the energy-dissipating crank 6. In this invention, eddy currents are generated by the law of electromagnetic induction, and damping force is generated by Lenz's law to achieve energy dissipation; the energy storage and force feedback of the gas spring are achieved by Hooke's law (the relationship between elastic deformation and elastic force); the initial energy dissipation directly weakens the kinetic energy of the swinging torsion, avoiding the expansion of the torsion amplitude; the energy storage of the gas spring prevents the component overload caused by the instantaneous accumulation of energy, and at the same time drives the auxiliary energy dissipation crank 5 to participate in the work, preparing for coordinated energy dissipation.

[0039] Driven by the reaction force of the gas spring, the auxiliary energy-dissipating crank 5 slides along the slide rail, cutting the magnetic field of the permanent magnet inside the anti-torsion ring shell 4. Eddy currents are also generated inside the crank 5, which is subjected to electromagnetic damping force. The auxiliary energy-dissipating crank 5 and the transmission energy-dissipating crank 6 form a double-crank collaborative energy dissipation mechanism. The total cutting area and relative speed of the double-crank synchronously cutting the magnetic field lines are doubled. The intensity of the eddy currents and the electromagnetic damping force are also superimposed, further dissipating mechanical kinetic energy. The double-crank parallel cutting of the magnetic field lines, superimposed with the eddy current effect and damping force, improves the energy dissipation efficiency. The energy dissipation efficiency is more than doubled compared with a single crank, which quickly reduces the amplitude of the dancing torsion of the split conductor and avoids problems such as corona discharge and coating corrosion caused by the reduction of conductor spacing.

[0040] When the external wind-ice load weakens and the galloping torsional excitation of the split conductor decreases, the gas spring releases the previously stored elastic potential energy. Through controllable slow rebound (the damping characteristics of the bladder-type gas spring achieve slow release), it drives the auxiliary energy-dissipating crank 5 and the energy-transmitting crank 6 to continue moving along the slide rail. Driven by elastic potential energy, the double crank continuously cuts the magnetic field lines, generating eddy currents to achieve secondary energy dissipation, completely dissipating the trace energy remaining after the initial energy dissipation and collaborative energy dissipation. The conversion of elastic potential energy into mechanical kinetic energy further excites electromagnetic induction and eddy current effects. This avoids torsional rebound caused by residual energy, achieves graded and gradual energy dissipation, ensures that the galloping torsion is completely suppressed, guarantees the aerodynamic stability of the split conductor, and reduces the probability of secondary span oscillation.

[0041] Operating Condition 2: The working process when the splitter conductor is unbalanced due to icing and self-reversal.

[0042] When icing occurs on one side of the split conductor 18 (wind-induced asymmetric icing), leading to uneven mass distribution and causing self-torsion due to icing imbalance, the system adaptively suppresses this through the elastic tie rod torsion-friction torque feedback of the split conductor anti-torsion component 3. The specific process is as follows: After one side of the split conductor 18 is covered with ice, the mass imbalance generates a torsional moment, which drives the split conductor 18 to continuously twist around its own axis; the split conductor 18 drives the two fixed collars 16 of the split conductor anti-torsion component 3 to twist synchronously (the fixed collars 16 are flexibly fixed to the conductor through the fixed collar rubber pads 17 and move with the conductor). Since the connecting fixed rod 2 and the anti-torsion ring 1 form a rigid spatial structure, it plays a limiting and fixing role on the rotating collar 12 (the rotating collar 12 cannot twist with the conductor), resulting in a relative angular displacement between the fixed collar 16 and the rotating collar 12; the mass imbalance causes a torsional moment, and the rigid spatial structure provides a limit; the conductor torsion is converted into relative motion of the collar, which provides power for the twisting deformation of the elastic tie rod, realizing the conversion of torsional motion into structural deformation.

[0043] The relative angular displacement between the fixed collar 16 and the rotating collar 12 causes the elastic connecting rod 14 between them to undergo helical twisting deformation (the elastic connecting rod 14 is wound and tightened along the axial direction of the split sub-conductor 18); when the elastic connecting rod 14 twists and deforms, the connecting rod friction pad 15 on its outer surface is in close contact with the outer surface of the split sub-conductor 18, and the contact normal pressure increases nonlinearly with the degree of twisting (the more severe the twisting, the greater the twisting force of the connecting rod on the conductor, and the greater the normal pressure); the friction force between the connecting rod friction pad 15 and the surface of the conductor is along the axis of the split sub-conductor 18. The frictional forces of the three sets of elastic rods 14 are superimposed to form an equivalent suppressing torque, the direction of which is opposite to the torsion direction of the split conductor 18; the helical twisting deformation generates contact normal pressure, and Coulomb's law of friction (friction force = normal pressure × friction coefficient) generates frictional force; the superposition of multiple sets of frictional forces forms a suppressing torque; an adaptive counter-torsion torque opposite to the torsion direction is generated, which directly hinders the continuous torsion of the split conductor 18 and avoids problems such as stress accumulation and deterioration of icing morphology (from airfoil to ellipse / circle) caused by intensified torsion.

[0044] If the degree of torsion of the split sub-conductor 18 increases further, the relative angular displacement of the fixed collar 16 and the rotating collar 12 increases synchronously, the twisting deformation of the elastic tie rod 14 also increases accordingly, the contact positive pressure of the tie rod friction pad 15 continues to increase, and the synthesized equivalent suppressing torque is simultaneously enhanced; when the equivalent suppressing torque and the icing torsion torque of the split sub-conductor 18 reach equilibrium, the torsion of the split sub-conductor 18 stops, achieving dynamic stability; if the external icing load changes (such as icing detachment, wind force changes), the torque balance can be adjusted in real time to always maintain the suppressing effect; the degree of torsion - twisting deformation - positive pressure - suppressing torque are nonlinearly positively correlated, constructing a negative feedback adjustment loop; without manual intervention, adaptive control of torsion under different degrees of icing is achieved, adapting to the differentiated torsion requirements under complex icing environments, overcoming the shortcomings of fixed torque and poor adaptability of traditional pendulum devices.

[0045] Operating Condition 3: Working process when the split conductor experiences high-frequency, low-amplitude vibration.

[0046] When the split conductor 18 is tensioned after being suppressed by icing torsion, it generates high-frequency, low-amplitude vibrations under wind force. The system dissipates the vibration energy through the vibration damping energy dissipation beads 20 of the split conductor anti-torsion component 3. The specific process is as follows: The high-frequency, low-amplitude vibration of the split conductor 18 is transmitted to the elastic rod 14 through the fixed collar 16 and rotating collar 12 of the split conductor anti-torsion assembly 3, driving the elastic rod 14 to synchronously perform high-frequency micro-deformation vibration. The vibration of the elastic tie rod 14 causes the vibration damping and energy dissipation beads 20 inside the tie rod cavity 19 to perform multidimensional random motion (colliding up and down, left and right) under the constraint of the elastic rubber layer, and frequently collides with the inner wall of the tie rod cavity 19 and other vibration damping and energy dissipation beads 20; the mechanical transmission of vibration energy (from the conductor to the collar and then to the tie rod); the present invention converts the vibration energy of the conductor into the kinetic energy of the vibration damping and energy dissipation beads 20, laying the foundation for collision friction energy dissipation, and avoiding the direct transmission of vibration energy to the pole or conductor joint.

[0047] During the collisions between the vibration-damping and energy-dissipating beads 20 and between the vibration-damping and energy-dissipating beads 20 and the inner wall of the tie rod cavity 19, kinetic energy is converted into heat energy and dissipated through elastic deformation (deformation of the rubber layer) and friction, thus achieving vibration energy dissipation. The elastic rubber layer on the inner surface of the tie rod cavity 19 and the outer surface of the vibration-damping and energy-dissipating beads 20 can prolong the collision contact time (avoiding instantaneous hard collisions) and increase the friction coefficient, further improving energy dissipation efficiency. As vibration energy continues to dissipate, the high-frequency, low-amplitude vibration amplitude of the split sub-conductor 18 gradually decreases and eventually stabilizes. This invention effectively suppresses additional damage to the split sub-conductor 18 caused by high-frequency, low-amplitude vibration, avoids conductor fatigue aging caused by vibration energy accumulation, extends the service life of the transmission line, and avoids problems such as tie rod loosening and collar wear caused by vibration.

[0048] In summary, the split conductor anti-torsion system of this invention is adaptive, capable of achieving variable torque response based on the dynamic torsional state of the split conductor. This system establishes a nonlinear relationship between the degree of torsion and the control torque through the coordinated deformation mechanism of the elastic tie rod and the tie rod friction pad, achieving dynamic enhancement of the control torque. The tie rod length can be flexibly adjusted according to the mechanical requirements of different sections of the transmission line, effectively adapting to the differentiated torsional torque control requirements under complex environments. This invention improves upon the drawback of traditional pendulum-type anti-torsion devices, which easily cause stress concentration in transmission lines. By utilizing the frictional force generated when the elastic tie rod and the tie rod friction pad tightly adhere to the transmission line during torsion, the required control torque is dispersed into frictional force along the conductor axis, effectively avoiding the local stress peak problem caused by the concentrated torque applied by traditional devices. The multi-element anti-torsion ring system of this invention utilizes auxiliary energy-dissipating curved rods and transmission energy-dissipating curved rods to slide and cut magnetic field lines within the anti-torsion ring, generating… The invention utilizes the eddy current effect to dissipate energy and suppress the overall galloping and torsion of the split conductors. When the conductor twists, it drives the crank to rotate through the connecting fixed rod, while the outer shell maintains its original position due to inertia, thus generating relative motion between the two. This assists the energy-dissipating crank and the energy-transmitting crank in cutting magnetic field lines to generate eddy currents and dissipate energy, thereby effectively suppressing conductor torsion. When the galloping of the split sub-conductors is intense, some energy dissipation is not timely, and the crank pushes the gas spring to compress and temporarily store the energy. Then, as the galloping decreases, the gas spring releases the energy through the rebound process, realizing graded dissipation and dynamic control of the galloping and torsion energy of the split conductors. Compared with the traditional solution that requires the independent installation of a pendulum-type anti-torsion device on each sub-conductor, this invention adopts a multi-split sub-conductor collaborative design. By restricting the spatial position, a single device can apply synchronous torque to multiple sub-conductors, which not only effectively reduces the load pressure on the line during operation but also significantly improves the efficiency of anti-torsion control.

[0049] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A global adaptive compound anti-roll system, characterized by, The utility model relates to a kind of global adaptive composite torsion-resisting systems, including: Torsion ring, connecting fixed rod and split sub-conductor torsion-resisting assembly; Torsion ring includes torsion ring shell, auxiliary energy dissipation curved rod and transmission energy dissipation curved rod, permanent magnet is built-in in torsion ring shell to form the magnetic field environment required by eddy current effect;Auxiliary energy dissipation curved rod and transmission energy dissipation curved rod are freely slid in the circumferential direction of the slide rail of torsion ring shell, auxiliary energy dissipation curved rod and transmission energy dissipation curved rod cut magnetic induction line and generate eddy current effect when sliding, the kinetic energy of auxiliary energy dissipation curved rod and transmission energy dissipation curved rod is converted into internal energy dissipation; Connecting fixed rod includes first rod, second rod, third rod and fourth rod, which are rotatably sleeved on corresponding split sub-conductor torsion-resisting assembly, one end of first rod, second rod, third rod and fourth rod is respectively connected with corresponding transmission energy dissipation curved rod in slide rail, gas spring is arranged between adjacent auxiliary energy dissipation curved rod and transmission energy dissipation curved rod, the other end of first rod, second rod, third rod and fourth rod is respectively provided with end connecting lug, and side of first rod, second rod, third rod and fourth rod is respectively provided with side connecting lug; End connecting lug of first rod is movably connected with side connecting lug of second rod, end connecting lug of second rod is movably connected with side connecting lug of third rod, end connecting lug of third rod is movably connected with side connecting lug of fourth rod, and end connecting lug of fourth rod is movably connected with side connecting lug of first rod.

2. The global adaptive composite torsion-resisting system according to claim 1, wherein: End connecting lug of first rod is vertically movably connected with side connecting lug of second rod by a bolt, end connecting lug of second rod is vertically movably connected with side connecting lug of third rod by a bolt, end connecting lug of third rod is vertically movably connected with side connecting lug of fourth rod by a bolt, and end connecting lug of fourth rod is vertically movably connected with side connecting lug of first rod by a bolt.

3. The global adaptive composite torsion-resisting system according to claim 1, wherein: The gas spring is a capsule gas spring.

4. The global adaptive composite torsion-resisting system according to any one of claims 1-3, wherein: The split sub-conductor torsion-resisting assembly comprises a rotating sleeve ring, a fixed sleeve ring and an elastic tie rod, and the rotating sleeve ring and the fixed sleeve ring are connected by the elastic tie rod.

5. The global adaptive composite torsion-resisting system according to claim 4, wherein: The elastic tie rod is hollow, and a damping energy dissipation bead is arranged in the cavity, and an elastic rubber layer is attached to the inner surface of the cavity and the outer surface of the damping energy dissipation bead.

6. The global adaptive composite torsion-resisting system according to claim 6, wherein: An elastic tie rod friction pad is arranged between the elastic tie rod and the split sub-conductor, a rotating sleeve ring rubber pad is arranged at the connection between the rotating sleeve ring and the split sub-conductor, and a fixed sleeve ring rubber pad is arranged at the connection between the fixed sleeve ring and the split sub-conductor.

7. The global adaptive composite torsion-resisting system according to any one of claims 1-3, wherein: The auxiliary energy dissipation curved rod and the transmission energy dissipation curved rod are both in the shape of a circular arc.

8. The global adaptive composite torsion-resisting system according to any one of claims 1-3, wherein: The anti-torsion ring shell has a radial opening, and a circumferential inner cavity of the anti-torsion ring shell is a circumferential sliding rail.

9. A method of global adaptive compound anti-twist, characterized by The global adaptive composite anti-torsion system of any one of claims 1-8 comprises the following process: When the sub-conductor is in overall galloping torsion, the connecting fixed rod connected with the sub-conductor drives the transmission energy dissipation crank to rotate in the circumferential sliding rail of the anti-torsion ring shell, the transmission energy dissipation crank cuts the magnetic field generated by the permanent magnet array to excite the eddy current effect; The transmission energy dissipation crank synchronously pushes the compression deformation of the gas spring between the auxiliary energy dissipation crank, drives the auxiliary energy dissipation crank to generate relative motion, so that the auxiliary energy dissipation crank also participates in the process of cutting the magnetic induction lines, and an eddy current energy dissipation mechanism of the transmission energy dissipation crank and the auxiliary energy dissipation crank is formed; When the galloping torsion excitation is weakened, the gas spring releases the elastic potential energy stored in advance, and drives the auxiliary energy dissipation crank and the transmission energy dissipation crank to continue to move through rebound.

10. A method of global adaptive compound anti-aliasing, characterized by The global adaptive composite anti-torsion system of claim 5 or 6 comprises the following process: When the sub-conductor is in overall galloping torsion, the connecting fixed rod connected with the sub-conductor drives the transmission energy dissipation crank to rotate in the circumferential sliding rail of the anti-torsion ring shell, the transmission energy dissipation crank cuts the magnetic field generated by the permanent magnet array to excite the eddy current effect; When the sub-conductor is in overall galloping torsion, the connecting fixed rod connected with the sub-conductor drives the transmission energy dissipation crank to rotate in the circumferential sliding rail of the anti-torsion ring shell, the transmission energy dissipation crank cuts the magnetic field generated by the permanent magnet array to excite the eddy current effect; When the sub-conductor is in overall galloping torsion, the connecting fixed rod connected with the sub-conductor drives the transmission energy dissipation crank to rotate in the circumferential sliding rail of the anti-torsion ring shell, the transmission energy dissipation crank cuts the magnetic field generated by the permanent magnet array to excite the eddy current effect; If the sub-conductor is in high-frequency low-amplitude vibration under the action of wind after being tensioned by the sub-conductor anti-torsion assembly, the damping energy dissipation beads in the elastic tie rod dissipate energy through collision and friction.

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