Power taking device and method with adjustable power taking distance for power transmission line

Abstract

The present application relates to the technical field of power transmission line power taking, and discloses a power transmission line power taking distance adjustable power taking device and method, which comprises an adjustable insulator connecting fitting hung below a power iron tower, a composite insulator string is installed below the adjustable insulator connecting fitting, an adjustable signal line connector is installed below the composite insulator string, a T-shaped connecting wire clamp is installed at the other end of the adjustable signal line connector, a wire is installed in the T-shaped connecting wire clamp and perpendicular to the other end of the adjustable signal line connector, and a wire power taking mutual inductor is installed on the wire. The length of the adjustable insulator connecting fitting and the adjustable signal line connector is adjusted to realize the installation of the power transmission line power taking device of the power iron tower under different power taking distance working conditions. The power taking device adjusts the length of the adjustable insulator connecting fitting and the adjustable signal line connector to realize the installation of the power transmission line power taking device of the power iron tower under different power taking distance working conditions.

Description

Technical Field

[0001] This invention relates to the field of power extraction technology for power transmission lines, specifically to a power extraction device and method with adjustable power extraction distance for power transmission lines. Background Technology

[0002] Transmission lines are a core component of the power system. To ensure the safe and stable operation of these lines, an increasing number of online monitoring devices, anti-icing and de-icing devices, and other adaptable equipment are being deployed on power transmission towers. A stable power supply for these devices is fundamental to their normal operation. During transmission line operation, various monitoring and communication adaptable devices need to be mounted on the towers. The normal operation of these devices depends on a stable power supply. Currently, the power extraction method for the adaptable equipment at the tower end of transmission lines mostly involves drawing power from conductor current transformers and then transmitting the electrical energy to the power supply device at the tower end via signal lines. Currently, inductive power extraction from the transmission line conductors is the most common power supply method for tower adaptable equipment. The power extraction device needs to transmit the electrical energy obtained from the conductors to the electrical equipment on the tower side. However, the installation distance for power extraction varies depending on the transmission line model and the tower structure: the distance between the conductor and the tower varies with parameters such as conductor voltage level, number of splits, and sag. Different operating conditions require power extraction devices with different length specifications to complete the installation.

[0003] The existing power collection devices for transmission lines have significant defects in their connection structure, mostly being fixed-length structures that cannot adjust the power collection distance according to actual on-site conditions. Specifically: First, the connection structure is not adjustable. The signal line connectors and insulator connecting hardware of existing power collection devices have fixed lengths, making it impossible to adjust them according to different tower models, line spacing, high and low voltage lines, and towers at different altitudes. This results in poor adaptability and difficulty in meeting the installation needs of various scenarios. If the on-site conditions do not match the designed length of the device, it is necessary to replace the power collection device components with those of the corresponding length, which not only increases the difficulty of on-site construction but also prolongs the construction period. Firstly, the existing devices suffer from several drawbacks. Firstly, they require the advance stockpiling of various component specifications, significantly increasing material and maintenance costs. Secondly, signal line protection is inadequate. Existing devices often have exposed signal lines or use fixed-length protective structures, making them susceptible to pulling and wear during construction. They also cannot adapt to different length installation requirements, leading to insulation aging and signal interruption after long-term operation, affecting power supply reliability. Thirdly, the connection between conductors and signal lines lacks a reasonable fixing structure, resulting in unstable connections and potential damage to conductors. Furthermore, the unreasonable design of signal line outlets can easily lead to bending and breakage of the signal lines. Fourthly, the insulator connection hardware is inconvenient to adjust, making it difficult to flexibly adjust the installation height of the power supply device to adapt to different tower line installation conditions, resulting in low construction efficiency and poor post-installation stability. In addition, some adjustable-length power supply devices fail to consider both insulation performance and power transmission stability. Either the length adjustment operation is complex and the structural stability after locking is insufficient, or the insulation reliability is poor, posing safety hazards such as leakage and flashover, and failing to provide a stable and safe power output for tower-side equipment. In view of the shortcomings of the existing technology, there is an urgent need for a multi-scenario adjustable insulation connection power supply device that is structurally reasonable, highly adaptable, easy to install, and can effectively protect components, so as to solve the problems of difficult installation and low operational reliability of existing power supply devices in multi-condition iron tower lines. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a power extraction device and method with adjustable power extraction distance for transmission lines. By installing adjustable insulator connecting hardware with adjustable length between the power tower and the composite insulator string, and adjustable signal line connector with adjustable length between the composite insulator string and the T-type connecting clamp, the lengths of the two connecting sections can be adjusted to adapt to the power extraction installation distance requirements under different working conditions. Moreover, the insulation structure meets the safety requirements of high-voltage transmission scenarios. This invention solves the technical problems of existing power extraction devices for transmission lines being unable to adapt to different power extraction distances in field conditions, requiring the replacement of corresponding specification components, resulting in high construction and material costs, and existing adjustable structures having poor insulation reliability, insufficient structural stability after installation, and inability to output stable power.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a power extraction device with adjustable power extraction distance for power transmission lines, comprising an adjustable insulator connecting hardware suspended below a power tower, a composite insulator string installed below the adjustable insulator connecting hardware, an adjustable signal line connector installed below the composite insulator string, a T-shaped connecting clamp installed at the other end of the adjustable signal line connector, a conductor installed perpendicular to the other end of the adjustable signal line connector within the T-shaped connecting clamp, and a conductor current transformer installed on the conductor. By adjusting the lengths of the adjustable insulator connecting hardware and the adjustable signal line connector, the installation of the power extraction device for power transmission lines on power towers under different power extraction distance conditions can be achieved.

[0006] Furthermore, the adjustable signal line connector connected to the composite insulator string is perpendicular to each other. The electrical energy obtained by the conductor current transformer is transmitted to the tower through the conductor, the T-type connecting clamp, the adjustable signal line connector, the composite insulator string, and the adjustable insulator connecting hardware, providing a stable power output for the adapter equipment.

[0007] Furthermore, the adjustable insulator connection hardware includes a first U-shaped screw installed on the power tower, a U-shaped buckle installed at the lower end of the first U-shaped screw, a turnbuckle installed at the lower end of the U-shaped buckle, and the lower end of the turnbuckle connected to the composite insulator string.

[0008] Furthermore, the adjustable signal line connector includes a signal line protective outer sleeve. An ear plate is connected to the upper side of one section of the signal line protective outer sleeve. A cup-shaped mounting plate is installed on the ear plate, and the composite insulator string is installed on the cup-shaped mounting plate. A mounting groove is longitudinally formed at the other end of the signal line protective outer sleeve relative to the ear plate, and a signal line protective inner sleeve is fitted into this groove. After the signal line protective inner sleeve is slidably fitted into the signal line protective outer sleeve and adjusted to the correct position, a sleeve fixing clamp is fitted onto the inner sleeve exposed in the mounting groove for locking. Both the signal line protective outer sleeve and the signal line protective inner sleeve are made of insulating material.

[0009] Furthermore, the sleeve fixing clamp includes a second U-shaped screw fitted onto the inner sleeve of the signal line protection that is exposed in the mounting groove. The inner side of the U-shaped opening of the second U-shaped screw is attached to the outer side of the inner sleeve of the signal line protection. Fixing pressure plates are fitted onto the two outer ends of the U-shape of the second U-shaped screw. The inner side of the fixing pressure plates is attached to the outer surface of the outer sleeve of the signal line protection. The screw is then locked by nuts fitted onto the two outer ends of the U-shape.

[0010] Furthermore, the T-shaped connector includes a T-shaped upper cover, and a first lower cover matching the upper cover is symmetrically installed below the T-shaped end of the upper cover via four first fasteners. A second lower cover matching the upper cover is symmetrically installed below the vertical section of the T-shape of the upper cover via four second fasteners. A wire mounting through hole is provided at the location where the upper cover matches the two first lower covers, and a sleeve mounting through hole is provided at the location where the upper cover matches the two second lower covers. The wire is fitted into the wire mounting through hole, adjusted in position, and then locked by the four first fasteners. The signal line protection inner sleeve is fitted into the sleeve mounting through hole, adjusted in position, and then locked by the four second fasteners.

[0011] Furthermore, the signal line protection outer sleeve and the signal line protection inner sleeve, which are assembled together, contain a signal line. One end of the signal line is electrically connected to the conductor in the T-type connecting clamp, and the other end is electrically connected to the vertical end of the composite insulator string.

[0012] Furthermore, the power acquisition device also includes a high-voltage end module and a low-voltage end module. The high-voltage end module is installed at the vertical end of the composite insulator string and connected to the signal line to obtain power. The low-voltage end module is installed on the power tower and electrically connected to the upper end of the adjustable insulator connecting hardware. The high-voltage end module and the low-voltage end module adopt a wireless insulated transmission method, which can realize the isolated transmission of power.

[0013] Furthermore, the conductor current transformer is a current transformer that obtains induced electrical energy by sensing the alternating current flowing through the conductor, transmits it to the signal line, and then transmits it to the low-voltage module after rectification and voltage regulation by the high-voltage module to power the adapter equipment on the tower.

[0014] The present invention also provides a power extraction method with adjustable power extraction distance for transmission lines, used in conjunction with the aforementioned power extraction device with adjustable power extraction distance for transmission lines, comprising the following steps: S1. Conduct on-site surveys of the actual working conditions of the power transmission tower lines to determine the adjustment lengths of the adjustable insulator connecting hardware and the adjustable signal line connector. By adjusting the lengths of the adjustable insulator connecting hardware and the adjustable signal line connector, the installation of the power take-off device for the power transmission line of the power tower can be achieved under working conditions with different power take-off distances. S2. Adjust the length of the adjustable signal line connector: Slide the inner sleeve of the signal line protection tube until it extends beyond the outer sleeve of the signal line protection tube to the preset value. Then, install the sleeve fixing clamp in the mounting groove of the outer sleeve of the signal line protection tube, tighten the nut, and lock the inner sleeve of the signal line protection tube and the outer sleeve of the signal line protection tube. S3. Adjust the length of the adjustable insulator connection hardware: Rotate the adjustment part of the turnbuckle to adjust its length to the preset value, that is, adjust the distance between the power tower and the composite insulator string so that the upper end of the adjustable insulator connection hardware is electrically connected to the low voltage module. S4. Install the T-type connector clamp: Insert the power line conductor into the conductor mounting through hole of the T-type connector clamp, tighten the first fastener to achieve a stable clamping grip; insert the end of the signal line protection inner sleeve of the adjustable signal line connector into the sleeve mounting through hole, tighten the second fastener to achieve a stable clamping grip. S5. Connecting the signal line: Connect one end of the signal line to the conductor in the T-type connector clamp, and connect the other end through the adjustable signal line connector to the high-voltage end module at the vertical end of the composite insulator string. S6. Install the conductor current transformer: Place the input end of the conductor current transformer onto the power transmission line conductor, tighten the clamping bolts to ensure good contact between it and the conductor, so that it can stably obtain electrical energy. S7. Debugging and Operation: Connect the circuit, check whether the connections of each component are secure, and whether the composite insulator string can transmit electrical energy normally to the monitoring equipment at the end of the power tower. After confirming that the power collection device is operating normally, the installation is completed.

[0015] Compared with the prior art, the present invention provides a power extraction device and method with adjustable power extraction distance for transmission lines, which has the following beneficial effects: 1. This power supply device, by setting an adjustable signal line connector and a T-type connecting clamp, can flexibly adjust the installation position of the high-voltage end of the power supply device along the composite insulator string, and thus adjust the power supply distance according to actual needs, adapting to different installation scenarios and power supply requirements, making it more versatile.

[0016] 2. This power supply device uses a T-type connecting clamp with a clamp-type gripping mechanism, which can be directly clamped onto the transmission line conductor to complete the electrical connection without modifying the original transmission line structure. The installation and operation are simple, and the connection stability is high, which reduces the difficulty of on-site construction and the cost of modification.

[0017] 3. This power supply device uses a conductor current transformer to directly draw power from the transmission line. Combined with a stable signal and power transmission structure, it can provide a continuous and stable power supply for the line monitoring equipment. There is no need to lay additional power supply lines or replace the power supply regularly. It has low maintenance costs and a long service life. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the planar installation of a power collection device with adjustable power collection distance for power transmission lines according to the present invention; Figure 2 This is a perspective view of a power extraction device with adjustable power extraction distance for power transmission lines according to the present invention; Figure 3 for Figure 2 A three-dimensional view of the adjustable insulator connection hardware; Figure 4 for Figure 2 3D view of the adjustable signal line connector; Figure 5 for Figure 4 A three-dimensional view of the adjustable signal line connector from another perspective; Figure 6 for Figure 4 3D view of the protective sheath for the signal line; Figure 7 for Figure 4 A three-dimensional view of the middle sleeve fixing clamp; Figure 8 for Figure 2 A 3D view of the T-shaped connector clamp; Figure 9 for Figure 8 A three-dimensional view of the T-shaped connector clamp from another perspective; Figure 10 for Figure 8 A 3D view of the center line clamp cover; Figure 11 for Figure 10 A three-dimensional view of the top cover of the wire clamp from another perspective; Figure 12 for Figure 8 A 3D view of the lower cover of the first line clip; Figure 13 for Figure 8 A 3D view of the lower cover of the second line clip; In the diagram: 1. Power transmission tower; 2. Adjustable insulator connection hardware; 201. First U-bolt; 202. U-bolt; 203. Turnbuckle; 3. Composite insulator string; 4. Adjustable signal line connector; 401. Signal line protective outer sleeve; 402. Ear plate; 403. Bowl head mounting plate; 404. Mounting slot; 405. Signal line protective inner sleeve; 406. Sleeve fixing clamp; 4061. Second U-bolt; 4062. Fixing pressure plate; 4063. Nut; 5. T-type connecting clamp; 501. Clamp top cover; 502. First fastener; 503. First clamp bottom cover; 504. Second fastener; 505. Second clamp bottom cover; 506. Conductor mounting through hole; 507. Sleeve mounting through hole; 6. Conductor; 7. Conductor current transformer; 8. Signal line. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0020] Please see Figure 1-13 This embodiment discloses a power extraction device with adjustable power extraction distance for power transmission lines, including an adjustable insulator connecting hardware 2 suspended below a power tower 1, a composite insulator string 3 installed below the adjustable insulator connecting hardware 2, an adjustable signal line connector 4 installed below the composite insulator string 3, a T-shaped connecting clamp 5 installed at the other end of the adjustable signal line connector 4, a conductor 6 installed perpendicular to the other end of the adjustable signal line connector 4 inside the T-shaped connecting clamp 5, and a conductor current transformer 7 installed on the conductor 6. By adjusting the lengths of the adjustable insulator connecting hardware 2 and the adjustable signal line connector 4, the installation of the power extraction device for power transmission lines on power towers under different power extraction distance conditions can be achieved. The adjustable signal line connector 4 connected to the composite insulator string 3 makes them perpendicular to each other. The electrical energy obtained by the conductor current transformer 7 is transmitted to the tower through the conductor 6, T-type connecting clamp 5, adjustable signal line connector 4, composite insulator string 3 and adjustable insulator connecting hardware 2, and provides a stable power output for the adapter equipment.

[0021] The adjustable insulator connection hardware 2 includes a first U-shaped screw 201 installed on the power tower 1, a U-shaped buckle 202 installed at the lower end of the first U-shaped screw 201, a turnbuckle 203 installed at the lower end of the U-shaped buckle 202, and a composite insulator string 3 connected to the lower end of the turnbuckle 203.

[0022] The adjustable signal line connector 4 includes a signal line protection outer sleeve 401. An ear plate 402 is connected to the upper side of one end of the signal line protection outer sleeve 401. A cup head mounting plate 403 is installed on the ear plate 402. A composite insulator string 3 is installed on the cup head mounting plate 403. The other end of the signal line protection outer sleeve 401 relative to the ear plate 402 has a longitudinally opened mounting groove 404. A signal line protection inner sleeve 405 is fitted into this port. After the signal line protection inner sleeve 405 is slidably fitted into the signal line protection outer sleeve 401 and adjusted to the correct position, a sleeve fixing clamp 406 is fitted onto the signal line protection inner sleeve 405 exposed in the mounting groove 404 for locking. Both the signal line protection outer sleeve 401 and the signal line protection inner sleeve 405 are made of insulating material. The sleeve fixing clamp 406 includes a second U-shaped screw 4061 fitted onto the signal line protection inner sleeve 405 exposed in the mounting groove 404. The inner side of the U-shaped opening of the second U-shaped screw 4061 is attached to the outer side of the signal line protection inner sleeve 405. The two outer ends of the U-shape of the second U-shaped screw 4061 are fitted with fixing plates 4062. The inner side of the fixing plates 4062 is attached to the outer surface of the signal line protection outer sleeve 401. The clamp is then locked by nuts 4063 fitted onto the two outer ends of the U-shape.

[0023] The T-shaped connector 5 includes a T-shaped upper cover 501. A first lower cover 503, matching the upper cover 501, is symmetrically installed below the T-shaped end of the upper cover 501 via four first fasteners 502. A second lower cover 505, matching the upper cover 501, is symmetrically installed below the vertical section of the T-shape of the upper cover 501 via four second fasteners 504. A wire mounting through-hole 506 is provided at the point where the upper cover 501 matches the two first lower covers 503. A sleeve mounting through-hole 507 is provided at the point where the upper cover 501 matches the two second lower covers 505. The wire 6 is fitted into the wire mounting through-hole 506, adjusted in position, and then locked by the four first fasteners 502. The signal line protection inner sleeve 405 is fitted into the sleeve mounting through-hole 507, adjusted in position, and then locked by the four second fasteners 504. The signal line protection outer sleeve 401 and the signal line protection inner sleeve 405, which are assembled together, contain the signal line 8. One end of the signal line 8 is electrically connected to the conductor 6 in the T-type connecting clamp 5, and the other end is electrically connected to the vertical end of the composite insulator string 3. The first fastener 502 and the second fastener 504 include bolts, washers, and nuts.

[0024] The power supply device also includes a high-voltage module and a low-voltage module. The high-voltage module is installed at the vertical end of the composite insulator string 3 and connected to the signal line 8 to obtain power. The low-voltage module is installed on the power tower 1 and electrically connected to the upper end of the adjustable insulator connecting hardware 2. The high-voltage module and the low-voltage module use a wireless insulated transmission method to achieve isolated power transmission. The conductor current transformer 7 uses a current transformer (CT) to obtain induced power through the alternating current flowing through the conductor 6, transmits it to the signal line 8, and then transmits it to the low-voltage module after rectification and voltage regulation by the high-voltage module to power the adapter equipment on the tower.

[0025] The working principle of this device is as follows: the current transformer 7 senses the alternating current flowing through the conductor 6 and obtains induced electrical energy from it. The obtained electrical energy is connected to the signal line 8 in the T-type connecting clamp 5 and transmitted to the high-voltage end module at the end of the composite insulator string 3 through the signal line 8 inside the adjustable signal line connector 4. After the high-voltage end module rectifies and stabilizes the obtained electrical energy, it transmits the electrical energy to the low-voltage end module installed on the side of the power tower 1 through wireless insulated transmission. Finally, the low-voltage end module outputs a stable working power to the online monitoring and other adaptation equipment on the tower. When adjusting the power supply installation distance to meet different on-site conditions, the lengths of the adjustable insulator connection hardware 2 and the adjustable signal line connector 4 can be adjusted separately. For the adjustable signal line connector 4, the sliding inner sleeve 405 of the signal line protection can be adjusted to change the length of its extension from the outer sleeve 401 of the signal line protection. After reaching the preset length, the second U-shaped screw 4061 of the sleeve fixing clamp 406 is inserted into the inner sleeve 405 of the signal line protection exposed in the mounting groove 404, so that the inner side of the fixing plate 4062 is in contact with the outer side of the outer sleeve 401 of the signal line protection. Tightening the nut 4063 completes the length locking. For the adjustable insulator connection hardware 2, the overall length can be changed by rotating the adjusting section of the turnbuckle 203 to adjust the distance between the power tower 1 and the composite insulator string 3, adapting to different power supply distance requirements. The installation needs of different working conditions can be met without the need for additional parts replacement, reducing on-site construction and material preparation costs. Example

[0026] A power extraction method with adjustable power extraction distance for transmission lines is disclosed. This method is specifically designed for operation and installation in conjunction with the power extraction device with adjustable power extraction distance for transmission lines described in Embodiment 1. Its overall process design effectively adapts to power extraction needs under different site conditions. The method includes the following steps: S1. First, conduct on-site surveys to comprehensively and meticulously investigate and collect data on the actual operating conditions of the transmission line at the location of the target power tower 1. Focus on evaluating factors such as the spatial layout of the line, conductor tension, insulator string length, and surrounding obstacles. Based on this, accurately determine the specific length parameters that need to be adjusted for the adjustable insulator connecting hardware 2 and the adjustable signal line connector 4 according to the survey results. Subsequently, by adjusting the physical lengths of these two key components, flexibly adapt to complex operating conditions at different power extraction distances, thereby ensuring that the entire power extraction device for the transmission line can be deployed smoothly, safely, and reliably under various installation conditions.

[0027] S2. Length adjustment operation for adjustable signal line connector 4: Specifically, manually slide the inner signal line protection sleeve 405 to extend it outward from the outer signal line protection sleeve 401 to the preset target length value; after reaching the required length, accurately install the matching sleeve fixing clamp 406 into the preset mounting groove 404 position on the outer signal line protection sleeve 401; then, use a tool to tighten the nut 4063 on the clamp to firmly press the relative position between the inner and outer sleeves, thereby effectively locking the extension state between the inner signal line protection sleeve 405 and the outer signal line protection sleeve 401, preventing loosening or displacement during subsequent operation.

[0028] S3. Simultaneously adjust the length of the adjustable insulator connection hardware 2: The operator needs to rotate the adjustment part of the turnbuckle 203, and change its overall effective length by rotating it clockwise or counterclockwise, until the preset value calculated according to the site conditions is reached; This adjustment process is essentially dynamically adjusting the spatial distance between the power tower 1 body and the composite insulator string 3, so as to ensure that the upper end of the adjustable insulator connection hardware 2 can be accurately connected and realize a stable electrical connection with the low voltage module, providing a reliable path for subsequent power transmission.

[0029] S4. Install the T-type connector clamp 5: First, insert the power line conductor 6 into the conductor mounting through hole 506 of the T-type connector clamp 5, and apply sufficient clamping force by tightening the first fastener 502 to make the clamp form a firm and reliable clamping mechanical grip on the conductor, ensuring good electrical contact and preventing loosening; then, insert the end of the signal line protective inner sleeve 405 of the adjustable signal line connector 4, which has been length adjusted, into the sleeve mounting through hole 507 on the other side of the T-type connector clamp 5, and similarly tighten the second fastener 504 to achieve a firm clamping fixation of the end of the inner sleeve, thereby ensuring the continuity of the signal line path and structural stability.

[0030] S5. Connecting signal line 8: Connect one end of signal line 8 directly to the transmission line conductor 6 inside the T-type connector 5 to ensure effective conduction of current or signal; at the same time, pass the other end of signal line 8 through the internal channel of adjustable signal line connector 4 and finally lead it to the high-voltage end module installed at the vertical end of composite insulator string 3 to complete the electrical connection with the module, thereby constructing a complete signal or energy transmission circuit.

[0031] S6. Install the conductor current transformer 7: Wrap the open portion of the input end of the conductor current transformer 7 around and tightly fit it onto the outer surface of the transmission line conductor 6, ensuring that there is no obvious gap between its magnetic core and the conductor; then tighten the clamping bolts or other fastening mechanisms on the transformer to make the transformer firmly fit the conductor, which not only ensures a good electromagnetic coupling effect, but also ensures that it can stably sense and efficiently obtain the required electrical energy during long-term operation, providing a continuous power supply for monitoring equipment or other loads.

[0032] S7. Finally, conduct system debugging and operation verification: After all mechanical and electrical connections are completed, connect the entire circuit system and check one by one whether the T-type connecting clamp 5, adjustable connecting hardware, signal line connector, current transformer and other components are firmly installed, whether the contact is reliable, and whether the insulation is intact; at the same time, observe whether the composite insulator string 3 can stably transmit the electrical energy obtained from the induction or coupling of the conductor to various online monitoring equipment or other power terminals located at the power tower 1 end; only after confirming that the entire power supply device is running smoothly, functions normally, and has no abnormal heating or discharge phenomena can the installation work be considered to be successfully completed.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power extraction device with adjustable power extraction distance for transmission lines, comprising adjustable insulator connecting fittings (2) suspended below a power tower (1), characterized in that: A composite insulator string (3) is installed below the adjustable insulator connecting hardware (2), and an adjustable signal line connector (4) is installed below the composite insulator string (3). A T-type connecting clamp (5) is installed at the other end of the adjustable signal line connector (4). A conductor (6) is installed inside the T-type connecting clamp (5) perpendicular to the other end of the adjustable signal line connector (4). A conductor current transformer (7) is installed on the conductor (6). By adjusting the lengths of the adjustable insulator connecting hardware (1) and the adjustable signal line connector (4), the installation of the power taking device for the power transmission line of the power tower under different power taking distance working conditions can be realized.

2. The power extraction device with adjustable power extraction distance for transmission lines according to claim 1, characterized in that: The composite insulator string (3) is connected to the adjustable signal line connector (4) so ​​that the two are perpendicular to each other. The electrical energy obtained by the conductor current transformer (7) is transmitted to the tower through the conductor (6), the T-type connecting clamp (5), the adjustable signal line connector (4), the composite insulator string (3) and the adjustable insulator connecting hardware (2) and provides a stable power output for the adapter equipment.

3. A power extraction device with adjustable power extraction distance for transmission lines according to claim 1 or 2, characterized in that: The adjustable insulator connection fitting (2) includes a first U-shaped screw (201) installed on the power tower (1), a U-shaped buckle (202) installed at the lower end of the first U-shaped screw (201), a turnbuckle (203) installed at the lower end of the U-shaped buckle (202), and the lower end of the turnbuckle (203) connected to the composite insulator string (3).

4. A power extraction device with adjustable power extraction distance for transmission lines according to claim 1 or 2, characterized in that: The adjustable signal line connector (4) includes a signal line protective outer tube (401). An ear plate (402) is connected to the upper side of one end of the signal line protective outer tube (401). A cup head hanging plate (403) is installed on the ear plate (402). The composite insulator string (3) is installed on the cup head hanging plate (403). The signal line protective outer tube (401) has a longitudinally opened mounting groove (404) at the other end relative to the ear plate (402). A signal line protective inner sleeve (405) is fitted into this port. When the signal line protective inner sleeve (405) is slidably fitted into the signal line protective outer tube (401) and adjusted to the correct position, a sleeve fixing clamp (406) is fitted onto the signal line protective inner sleeve (405) exposed in the mounting groove (404) for locking. Both the signal line protective outer tube (401) and the signal line protective inner sleeve (405) are made of insulating material.

5. A power extraction device with adjustable power extraction distance for transmission lines according to claim 4, characterized in that: The sleeve fixing clamp (406) includes a second U-shaped screw (4061) fitted onto the signal line protection inner sleeve (405) exposed in the mounting groove (404). The inner side of the U-shaped opening of the second U-shaped screw (4061) is attached to the outer side of the signal line protection inner sleeve (405). The two outer ends of the U-shape of the second U-shaped screw (4061) are fitted with fixing plates (4062). The inner side of the fixing plates (4062) is attached to the outer side of the signal line protection outer sleeve (401). The clamp is then locked by nuts (4063) fitted onto the two outer ends of the U-shape.

6. A power extraction device with adjustable power extraction distance for transmission lines according to claim 4, characterized in that: The T-shaped connecting clamp (5) includes a T-shaped clamp top cover (501). Below the T-shaped end of the clamp top cover (501), a first clamp bottom cover (503) matching the clamp top cover (501) is symmetrically installed via four first fasteners (502). Below the vertical section of the T-shaped clamp top cover (501), a second clamp bottom cover (505) matching the clamp top cover (501) is symmetrically installed via four second fasteners (504). The clamp top cover (501) and the two first fasteners... A wire mounting through hole (506) is provided at the matching position of the lower cover (503) of the wire clamp. A sleeve mounting through hole (507) is provided at the matching position of the upper cover (501) of the wire clamp and the two lower covers (505) of the second wire clamp. The wire (6) is fitted into the wire mounting through hole (506), adjusted in position, and then locked by the four first fasteners (502). The signal line protection inner sleeve (405) is fitted into the sleeve mounting through hole (507), adjusted in position, and then locked by the four second fasteners (504).

7. A power extraction device with adjustable power extraction distance for transmission lines according to claim 6, characterized in that: The signal line protection outer sleeve (401) and the signal line protection inner sleeve (405) are assembled together and contain a signal line (8). One end of the signal line (8) is electrically connected to the conductor (6) in the T-type connecting clamp (5), and the other end is electrically connected to the vertical end of the composite insulator string (3).

8. A power extraction device with adjustable power extraction distance for transmission lines according to claim 7, characterized in that: The power acquisition device also includes a high-voltage end module and a low-voltage end module. The high-voltage end module is installed at the vertical end of the composite insulator string (3) and connected to the signal line (8) to obtain power. The low-voltage end module is installed on the power tower (1) and electrically connected to the upper end of the adjustable insulator connecting hardware (2). The high-voltage end module and the low-voltage end module adopt a wireless insulated transmission method, which can realize the isolated transmission of power.

9. A power extraction device with adjustable power extraction distance for transmission lines according to claim 8, characterized in that: The conductor current transformer (7) is a current transformer (CT). It obtains induced electrical energy by sensing the alternating current flowing through the conductor (6), transmits it to the signal line (8), and then transmits it to the low-voltage module after rectification and voltage regulation by the high-voltage module to power the adapter equipment on the tower.

10. A power extraction method with adjustable power extraction distance for transmission lines, used with the power extraction device with adjustable power extraction distance for transmission lines as described in any one of claims 1-9, characterized in that: Includes the following steps: S1. Conduct on-site surveys of the actual working conditions of the power tower (1) line, determine the adjustment length of the adjustable insulator connecting hardware (2) and the adjustable signal line connector (4), and achieve the installation of the power taking device for the power tower transmission line under different power taking distance working conditions by adjusting the length of the adjustable insulator connecting hardware (2) and the adjustable signal line connector (4). S2. Adjust the length of the adjustable signal line connector (4): Slide the inner sleeve of the signal line protection (405) so that the length of the outer sleeve of the signal line protection (401) reaches the preset value, then install the sleeve fixing clamp (406) in the mounting groove (404) of the outer sleeve of the signal line protection (401), tighten the nut (4063) to lock the inner sleeve of the signal line protection (405) and the outer sleeve of the signal line protection (401). S3. Adjust the length of the adjustable insulator connection fitting (2): Rotate the adjustment part of the turnbuckle (203) to adjust its length to the preset value, that is, adjust the distance between the power tower (1) and the composite insulator string (3) so that the upper end of the adjustable insulator connection fitting (2) is electrically connected to the low voltage module. S4. Install the T-type connector clamp (5): Insert the power line conductor (6) into the conductor mounting through hole (506) of the T-type connector clamp (5), and tighten the first fastener (502) to achieve a stable clamping grip; insert the end of the signal line protection inner sleeve (405) of the adjustable signal line connector (4) into the sleeve mounting through hole (507), and tighten the second fastener (504) to achieve a stable clamping grip; S5, Connecting signal line (8): Connect one end of signal line (8) to conductor (6) in T-type connector (5) and the other end through adjustable signal line connector (4) to connect to the high voltage end module at the vertical end of composite insulator string (3); S6. Install the conductor current transformer (7): Place the input end of the conductor current transformer (7) onto the transmission line conductor (6), tighten the clamping bolts to ensure good contact between it and the conductor (6) so that it can stably sense and obtain electrical energy. S7. Debugging and operation: Connect the circuit, check whether the connection of each component is stable, whether the composite insulator string (3) can transmit electrical energy to the monitoring equipment at the end of the power tower (1) normally, and after confirming that the power taking device is operating normally, the installation is completed.

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