Charging device of high-voltage power transmission line

Abstract

The embodiment of the invention provides a charging device of a high-voltage power transmission line, and belongs to the technical field of high-voltage power transmission lines, and the charging device comprises a power taking module which is used for obtaining power frequency alternating current from a high-voltage wire; the wireless charging assembly comprises a shell and a current conversion module group, and the current conversion module group is arranged in the shell; the coupling module is used for being arranged on a high-voltage transmission line insulator chain on a high-voltage transmission line tower, the receiving module is wirelessly connected with the coupling module, and the receiving module is used for converting a high-frequency magnetic field into a high-frequency electric field; the energy conversion module is electrically connected with the monitoring equipment and the receiving module, and the energy conversion module is used for converting the high-frequency electric field into direct current and transmitting the direct current to the monitoring equipment; the connecting assembly is connected with the shell and used for being connected with a high-voltage wire. According to the charging device of the high-voltage power transmission line, the stable wireless charging effect on the monitoring equipment can be achieved.

Description

Technical Field

[0001] The present application relates to high-voltage power grid technology, and in particular to a charging device for a high-voltage transmission line. Background Art

[0002] With the rapid development of ultra-high voltage and ultra-high voltage transmission networks in my country, real-time monitoring of transmission line operating conditions has become crucial for ensuring a stable power supply. Installing online monitoring equipment on high-voltage towers enables comprehensive, multi-functional line monitoring and safety warnings.

[0003] Online monitoring equipment is mainly powered by batteries, solar power or wind power generation devices. These power supply methods face development bottlenecks such as frequent battery replacement, power supply stability affected by weather or limited power supply, which is not conducive to the large-scale promotion and sustainable application of the equipment. Summary of the Invention

[0004] An embodiment of the present application provides a charging device for a high-voltage transmission line, which is used to solve the technical problem that the power supply method of online monitoring equipment in the related art has limitations.

[0005] An embodiment of the present application provides a charging device for a high-voltage transmission line, which is used to supply power to monitoring equipment for the high-voltage transmission line. The charging device includes:

[0006] A power supply module, which is arranged on a high-voltage wire to obtain alternating current from the high-voltage wire;

[0007] A wireless charging assembly, comprising a housing and a current conversion module group, wherein the current conversion module group is disposed in the housing; the current conversion module group is electrically connected to the power extraction module, and the current conversion module group is used to convert the alternating current into high-frequency alternating current;

[0008] A coupling module, the coupling module being configured to be disposed on a high-voltage transmission line insulator string on a high-voltage transmission line tower, the coupling module being electrically connected to the current conversion module group, and the coupling module converting the high-frequency alternating current into a high-frequency magnetic field;

[0009] a receiving module, wirelessly connected to the coupling module, and configured to convert the high-frequency magnetic field into a high-frequency electric field;

[0010] an energy conversion module, electrically connected to the monitoring device and the receiving module, the energy conversion module being configured to convert the high-frequency electric field into direct current and transmit the direct current to the monitoring device;

[0011] A connecting assembly is connected to the housing and is used to connect to the high-voltage wire.

[0012] In some possible embodiments, the current conversion module group includes an industrial frequency rectifier module and a high-frequency inverter module, the coupling module is electrically connected to the high-frequency inverter module, the industrial frequency rectifier module is electrically connected to the power extraction module, the industrial frequency rectifier module is used to convert the alternating current into direct current, and the high-frequency inverter module is used to convert the direct current into high-frequency alternating current.

[0013] In some possible embodiments, the shell has a first electrical connection line and a second electrical connection line, the industrial frequency rectifier module is electrically connected to the power extraction module through the first electrical connection line, and the coupling module is electrically connected to the high-frequency inverter module through the second electrical connection line.

[0014] In some possible implementations, a communication module is further included, the communication module being disposed in the housing and electrically connected to the energy conversion module and the high-frequency inverter module to establish electrical communication between the energy conversion module and the high-frequency inverter module;

[0015] The high-frequency inverter module is configured to receive the current and voltage signals of the energy conversion module and adjust the operating parameters according to the current signal to switch the current output mode of the energy conversion module; the current output mode includes a constant current output mode and a constant voltage current output mode.

[0016] In some possible implementations, the connection assembly includes two wire spacers, the two wire spacers are respectively connected to two ends of the housing, and both of the two wire spacers are used to connect to the high-voltage wire.

[0017] In some possible embodiments, the wire spacer includes a wire spacer body and at least one connecting arm arranged on the wire spacer body, the shell is inserted into the wire spacer body and connected to the wire spacer body, and the connecting arm on the same wire spacer is used for detachable connection with the high-voltage wire.

[0018] In some possible implementations, an inserting portion is provided at one end of the connecting arm facing away from the wire spacing body, and the inserting portion is used to be inserted into the high-voltage wire together;

[0019] The conductor spacer further includes at least two connecting members, which are correspondingly arranged on the connecting arms and correspondingly connected to the plug-in portions for connecting the connecting arms to the high-voltage conductors.

[0020] In some possible embodiments, the plug-in portion includes a through hole provided at the end of the connecting arm, and the connecting arm is provided with a notch communicating with the through hole, so as to form two clamping sections on the connecting arm, and the clamping sections are provided with a threaded portion;

[0021] The connecting piece is a nut, which is sleeved on the two clamping sections on the same connecting arm and is threadedly connected to the threaded portion.

[0022] In some possible implementations, the number of the connecting arms is at least two, and the connecting arms are evenly spaced around the circumference of the wire spacer body.

[0023] In some possible implementations, the power extraction module is a power extraction coil.

[0024] The charging device for the high-voltage transmission line provided in this application utilizes a power extraction module to directly obtain alternating current from the high-voltage wire. The current conversion module group in the wireless charging component is arranged in the shell. The current conversion module group converts industrial frequency alternating current into high-frequency alternating current, which is beneficial to improving the current transmission efficiency and current transmission stability.

[0025] In addition, the coupling module is installed on the high-voltage transmission line insulator string on the high-voltage transmission line tower. The coupling module does not occupy additional line space, is easy to install quickly, and is also beneficial to avoid transmission interference caused by high-altitude wind swing factors. At the same time, the coupling module can use the insulation barrier of the insulator string to block the high-voltage arc, which is beneficial to achieve directional radiation of current energy and can achieve wireless energy transmission and charging effects for monitoring equipment while ensuring high-voltage isolation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0027] Figure 1 This is a diagram showing the usage status of a charging device for a high-voltage transmission line in an embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of the structure of a charging device for a high-voltage transmission line according to an embodiment of the present application, in which all components are shown in the form of block diagrams;

[0029] Figure 3 for Figure 2 Schematic diagram of some components of the wireless charging component;

[0030] Figure 4 for Figure 2 Schematic diagram of the connection between the connecting component and the shell;

[0031] Figure 5 for Figure 4 Schematic diagram of the structure of the middle shell;

[0032] Figure 6 for Figure 4 Schematic diagram of the structure of the connecting components;

[0033] Figure 7 for Figure 4 Schematic diagram of the structure of the middle guide spacer after omitting the connecting parts.

[0034] Description of Reference Numerals

[0035] 100. Power supply module;

[0036] 200. High-voltage transmission line tower; 201. High-voltage conductor; 202. High-voltage transmission line insulator string;

[0037] 300, wireless charging assembly; 301, housing; 3011, first electrical connection line; 3012, second electrical connection line; 3013, flange; 3014, connection hole; 302, current conversion module group; 3021, power frequency rectifier module; 3022, high-frequency inverter module; 303, receiving module; 304, energy conversion module; 305, communication module;

[0038] 400, coupling module;

[0039] 500, connecting assembly; 501, wire spacer; 5011, wire spacer body; 5013, insertion hole; 5014, connection matching hole; 5012, connecting arm; 5015, through hole; 5016, notch; 5017, clamping section; 5018, threaded portion; 502, connecting piece;

[0040] 600. Monitoring equipment.

[0041] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0042] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0043] As mentioned in the background technology, online monitoring equipment is mainly powered by batteries, solar energy or wind power generation devices. These power supply methods face development bottlenecks such as frequent battery replacement, power supply stability affected by weather or limited power supply, which is not conducive to the large-scale promotion and sustainable application of the equipment.

[0044] In related technologies, wireless power supply technology across the distance of high-voltage insulators has been applied to the charging operations of monitoring equipment. However, existing wireless charging systems are usually composed of multiple independent units such as power collection modules (such as electromagnetic induction coils), energy conversion modules, voltage stabilization modules, and communication modules. Each module needs to be individually fixed, wired, and debugged. When installing in the narrow space of a high-altitude tower, multiple climbing and positioning are required, which is time-consuming and labor-intensive, with a large installation workload and low efficiency.

[0045] Based on the above relevant description, one or more embodiments of the present application provide a charging device for a high-voltage transmission line, which is used to power a monitoring device 600 for a high-voltage transmission line. The scheme of the embodiments of the present application is described below in conjunction with the accompanying drawings.

[0046] like Figure 1 and Figure 2 As shown, the charging device for a high-voltage transmission line according to an embodiment of the present application includes a power extraction module 100 , a wireless charging component 300 , a coupling module 400 , a receiving module 303 , an energy conversion module 304 and a connection component 500 .

[0047] Among them, the power taking module 100 is used to be set on the high-voltage wire 201 to obtain industrial frequency AC power from the high-voltage wire 201; the wireless charging component 300 includes a shell 301 and a current conversion module group 302, and the current conversion module group 302 is set in the shell 301; the current conversion module group 302 is electrically connected to the power taking module 100, and the current conversion module group 302 is used to convert industrial frequency AC power into high-frequency AC power; the coupling module 400 is used to be set on the high-voltage transmission line insulator string 202 on the high-voltage transmission line tower 200, and the coupling module 4 00 is electrically connected to the current conversion module group 302, and the coupling module 400 converts the high-frequency alternating current into a high-frequency magnetic field; the receiving module 303 is wirelessly connected to the coupling module 400, and the receiving module 303 is used to convert the high-frequency magnetic field into a high-frequency electric field; the energy conversion module 304 is electrically connected to the monitoring device 600 and the receiving module 303, and the energy conversion module 304 is used to convert the high-frequency electric field into direct current and transmit the direct current to the monitoring device 600; the connecting component 500 is connected to the shell 301, and the connecting component 500 is used to connect to the high-voltage wire 201.

[0048] From the above description, it can be seen that the charging device for the high-voltage transmission line in the embodiment of the present application uses the power extraction module 100 to directly obtain alternating current from the high-voltage wire 201. The current conversion module group in the wireless charging component 300 is arranged in the shell 301. The current conversion module group converts the industrial frequency alternating current into high-frequency alternating current, which is beneficial to improving the current transmission efficiency and current transmission stability.

[0049] In addition, the coupling module 400 is arranged on the high-voltage transmission line insulator string 202 on the high-voltage transmission line tower 200. The coupling module 400 does not occupy additional line space, is convenient for quick installation, improves assembly efficiency, and is also beneficial to avoid transmission interference caused by high-altitude wind swing factors. At the same time, the coupling module 400 can use the insulation barrier of the insulator string to block the high-voltage arc, which is beneficial to achieve directional radiation of current energy, and can achieve the wireless energy transmission effect of the monitoring equipment 600 while ensuring high-voltage isolation.

[0050] It should be noted that, in the high-voltage transmission line, there is no absolute restriction on the split conductor structure of the high-voltage conductor 201 , and a four-split conductor structure is used as an example for description.

[0051] In the embodiment of the present application, the power taking module 100 is a power taking coil in the related technology. The power taking module 100 is directly connected to the four-split conductor. The power taking module 100 only serves to process and obtain industrial frequency alternating current. The high-frequency conversion is carried out in the current conversion module group inside the shell 301, thereby realizing the magneto-electric separation design.

[0052] If the converted high-frequency current is close to the high-voltage conductor 201, it will cause electromagnetic interference and affect the normal transmission of the high-voltage transmission line. Therefore, the magneto-electric separation design can effectively prevent the high-frequency current from interfering with the high-voltage conductor 201. In addition, the magneto-electric separation design ensures that the surge caused by lightning striking the high-voltage conductor 201 only affects the power extraction module 100 and does not affect the current conversion module group within the housing 301, thus protecting the normal operation of the current conversion module group.

[0053] It should be noted that the specific number of turns of the power taking coil should be set according to factors such as the energy taking power and the transmission power of the high-voltage wire 201, and there is no absolute limitation on this in the embodiment of the present application.

[0054] like Figure 3 As shown, in the embodiment of the present application, the current conversion module group 302 set in the shell 301 includes an industrial frequency rectifier module 3021 and a high-frequency inverter module 3022, the coupling module 400 is electrically connected to the high-frequency inverter module 3022, the industrial frequency rectifier module 3021 is electrically connected to the power extraction module 100, the industrial frequency rectifier module 3021 is used to convert alternating current into direct current, and the high-frequency inverter module 3022 is used to convert direct current into high-frequency alternating current.

[0055] In the above embodiment, the power frequency rectifier module 3021 is arranged in the shell 301 relatively close to the output end of the power supply module 100. The power frequency rectifier module 3021 converts unstable power frequency alternating current into direct current, and also forms electromagnetic isolation between the high voltage side and the low voltage side. The high frequency inverter module 3022 is located on the side of the power frequency rectifier module 3021 away from the power supply module 100. The high frequency inverter module 3022 converts the received direct current into high frequency alternating current with controllable frequency and phase. The high frequency alternating current can excite a strong coupling magnetic field, which is beneficial to the efficient magnetic energy conversion of the subsequent coupling module 400.

[0056] In some embodiments, the housing 301 has a first electrical connection line 3011 and a second electrical connection line 3012 , the industrial frequency rectifier module 3021 is electrically connected to the power taking module 100 via the first electrical connection line 3011 , and the coupling module 400 is electrically connected to the high frequency inverter module 3022 via the second electrical connection line 3012 .

[0057] Here, the first electrical connection line 3011 and the second electrical connection line 3012 can both adopt connecting wires in related technologies, for example, a spiral stainless steel armored layer cable wrapped with a silicone rubber composite insulation layer. Therefore, the first electrical connection line 3011 is actually used for high-voltage energy transmission under strong current conditions, and the second electrical connection line 3012 is used for high-frequency signal transmission under weak current conditions. The functional positioning of the first electrical connection line 3011 and the second electrical connection line 3012 is pure, which also facilitates the rapid positioning of the fault area and facilitates the subsequent maintenance and inspection by the staff.

[0058] In some embodiments, the coupling module 400 includes a transmitting coil, a relay coil, and a receiving coil, all of which are fixed on the high-voltage transmission line insulator string 202. The receiving coil is used to receive the high-frequency alternating current from the current conversion module group 302. The relay coil processes the high-frequency alternating current into a high-frequency magnetic field and emits the high-frequency magnetic field to the receiving module 303 through the transmitting coil.

[0059] The transmitting coil, relay coil and receiving coil all adopt a classic circular structure, which is resistant to rotational displacement. Therefore, when the transmitting coil, relay coil and receiving coil are fixed on the high-voltage transmission line insulator string 202, the coupling module 400 can be prevented from lateral displacement, thereby avoiding affecting normal energy transmission.

[0060] In some embodiments, the energy conversion module 304 includes an AC-DC rectifier module and a DC-DC voltage regulator module located at the receiving end of the monitoring device 600. Generally speaking, the receiving module 303 transmits the high-frequency electric field to the AC-DC rectifier module in the subsequent energy conversion module 304. The AC-DC rectifier module converts the high-frequency alternating current into direct current (DC). The DC-DC voltage regulator module then regulates the DC power to the voltage and current required by the monitoring device 600 and transmits it to the monitoring device 600.

[0061] In some embodiments, the charging device for a high-voltage transmission line further includes a communication module 305, which is disposed in the shell 301. The communication module 305 is electrically connected to the energy conversion module 304 and the high-frequency inverter module 3022 to constitute electrical communication between the energy conversion module 304 and the high-frequency inverter module 3022; the high-frequency inverter module 3022 is configured to receive the current and voltage signals of the energy conversion module 304, and adjust the working parameters according to the current signal to switch the current output mode of the energy conversion module 304; the current output mode includes a constant current output mode and a constant voltage current output mode.

[0062] One end of the energy conversion module 304 is connected to the receiving module 303, and the other end is connected to the online monitoring device 600. The energy conversion module 304 is connected to the high-frequency inverter module 3022 via the communication module 305 to achieve precise control of the current output mode. Of course, in some alternative embodiments, a battery management module is also integrated into the housing 301. The battery management module can adopt a programmable logic controller in the relevant technology. The battery management module is connected to the communication module 305 and the high-frequency inverter module 3022, and the current output mode of the high-frequency inverter module 3022 is controlled in real time by collecting information fed back by the communication module 305.

[0063] Exemplarily, during the charging process of monitoring device 600, the battery charging circuit of monitoring device 600 first feeds back battery status and power demand information to the battery management module via communication module 305. Based on this information, the battery management module adjusts the operating parameters (including frequency, duty cycle, etc.) of high-frequency inverter module 3022 to optimize energy transmission and switch the current output mode of energy conversion module 304. Simultaneously, the AC-DC rectifier module and DC-DC voltage regulator module of energy conversion module 304 maintain data exchange with the battery management system (BMS) of monitoring device 600. High-frequency inverter module 3022 adjusts the output mode of energy conversion module 304 in real time based on parameters such as battery voltage, current, and temperature: maintaining a stable current output during the constant current phase, automatically switching to a constant voltage mode when the battery voltage reaches a threshold, and gradually reducing the charging current until charging is complete.

[0064] Exemplarily, the energy conversion module 304 implements constant current (CC)-constant voltage (CV) charging through closed-loop feedback control. During the constant current phase, the charging current is monitored in real time by a current sampling circuit (e.g., a shunt resistor + amplifier) ​​within the monitoring device 600. The pulse width modulation (PWM) duty cycle is dynamically adjusted using a PI control algorithm known in related art to ensure a constant current. When the battery voltage of the monitoring device 600 approaches a set threshold, the battery management module, using information collected from the communication module 305, controls the high-frequency inverter module 3022 to adjust relevant operating parameters, causing the energy conversion module 304 to switch to constant voltage mode, thereby stabilizing the output voltage and gradually reducing the current to a cutoff value. This design helps prevent overcharging of the monitoring device 600's battery while maintaining charging efficiency, thereby extending battery life.

[0065] like Figure 4 As shown, in the embodiment of the present application, the connection assembly 500 includes two wire spacers 501 , which are respectively connected to the two ends of the housing 301 , and the two wire spacers 501 are both used to connect to the high-voltage wire 201 .

[0066] Specifically here, the wire spacer 501 includes a wire spacer body 5011 and at least one connecting arm 5012 arranged on the wire spacer body 5011, the shell 301 is inserted into the wire spacer body 5011 and connected to the wire spacer body 5011, and a connecting arm 5012 on the same wire spacer 501 is used for detachable connection with the high-voltage wire 201.

[0067] In the above embodiment, if Figure 5 As shown, the communication module 305 and the current conversion module group 302 are integrated inside the shell 301, and the shell 301 adopts a metal shell 301 with an approximately rectangular cross-section, wherein the edges of one side of the shell 301 are constructed with outwardly protruding flanges 3013, and each flange 3013 is provided with a penetrating connection hole 3014; correspondingly, the middle part of the wire spacing body 5011 is provided with an approximately rectangular insertion hole 5013 for inserting the shell 301, and the circumferential edge of the wire spacing body 5011 near the plug interface is also provided with a connecting mating hole 5014 coaxially corresponding to the connecting hole 3014, at least part of the shell 301 is inserted into the plug hole, and the shell 301 and the guide spacer are connected by fasteners that penetrate the connecting hole 3014 and the connecting mating hole 5014.

[0068] It should be noted here that when at least part of the shell 301 is inserted into the plug-in hole of the wire spacing body 5011, the flange 3013 of the shell 301 is engaged with the wire spacing body 5011. This design is conducive to further enhancing the connection strength between the shell 301 and the wire spacing body 5011, thereby ensuring the stable connection between each module in the shell 301 and the power supply module 100, and avoiding poor power supply contact of the high-voltage transmission line monitoring equipment 600 due to extreme weather.

[0069] The aforementioned connecting hole 3014 and the connecting mating hole 5014 are both elongated holes in the figure. As an alternative embodiment, one of the connecting hole 3014 and the connecting mating hole 5014 is an elongated hole, and the other is a circular hole. The housing 301, which has a substantially rectangular cross-section, is pre-pierced and snap-fitted into the insertion hole of the wire spacer body 5011. Therefore, the mating connection between the connecting hole 3014 and the connecting mating hole 5014 serves to axially fasten the housing 301 and the wire spacer body 5011, and does not involve circumferential rotational constraint of the housing 301 relative to the wire spacer 501.

[0070] In the embodiment of this application, Figure 6 and Figure 7 As shown, the wire spacing body 5011 is used as a rigid support base of the shell 301, directly bearing the dancing load of the wire, and the connecting arm 5012 is provided with a plug-in portion at one end away from the wire spacing body 5011, and the plug-in portion is used to be jointly inserted into the high-voltage wire 201; the wire spacing member 501 also includes at least two connecting members 502, and the connecting members 502 are correspondingly arranged on the connecting arm 5012, and the connecting members 502 are correspondingly connected to the plug-in portion for connecting the connecting arm 5012 to the high-voltage wire 201.

[0071] In some embodiments, the number of the connecting arms 5012 is at least two, and each connecting arm 5012 is evenly spaced around the circumference of the wire spacing body 5011.

[0072] Exemplarily, for four-split conductors, four connecting arms 5012 protrude outward along the four corners of the conductor spacing body 5011, and the plug-in portion is located at the free end of the connecting arm 5012. The plug-in portion includes a through hole 5015 at the end of the connecting arm 5012, and a notch 5016 connected to the through hole 5015 is provided on the connecting arm 5012, so that two clamping sections 5017 are formed on the connecting arm 5012, and a threaded portion 5018 is provided on the clamping section 5017; the connecting piece 502 is a nut, which is sleeved on the two clamping sections 5017 on the same connecting arm 5012 and is threadedly connected to the threaded portion 5018.

[0073] As can be seen from the above description, when the connector 502 is tightened against the corresponding threaded portion 5018, the two clamping ends undergo symmetrical elastic deformation, thereby generating positive pressure that evenly wraps around the high-voltage conductor 201, avoiding the stress concentration problem caused by the unilateral clamping of traditional clamps. Furthermore, when assembling and connecting the wire spacer 501 to the four-split conductor, the operator simply snaps the notch 5016 into the corresponding high-voltage conductor 201 and tightens the connector 502. This makes the overall assembly process simple and convenient, and also facilitates the immediate replacement and maintenance of the housing 301.

[0074] In the embodiment of the present application, the power extraction module 100 is located on the high-voltage conductor 201, the wireless charging component 300 integrates the current conversion module group 302 and the communication module 305, the wireless charging component 300 is connected to the high-voltage conductor 201 through the connecting component 500, the coupling module 400 is arranged on the high-voltage transmission line insulator string 202 on the high-voltage transmission line tower 200, and the receiving module 303 and the energy conversion module 304 are both located on the side of the monitoring device 600. As a result, the charging device is actually clearly separated into three major installation areas. The module installations in each installation area do not interfere with each other, which is also conducive to the rapid installation process, improving installation efficiency and enhancing system compatibility.

[0075] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of the present application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0076] It should be understood that the present application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A charging device for a high-voltage transmission line, used to supply power to monitoring equipment for a high-voltage transmission line, characterized in that: The charging device comprises: A power supply module, which is arranged on a high-voltage conductor to obtain industrial frequency alternating current from the high-voltage conductor; A wireless charging assembly, comprising a housing and a current conversion module group, wherein the current conversion module group is disposed in the housing; the current conversion module group is electrically connected to the power extraction module, and the current conversion module group is used to convert the industrial frequency alternating current into high-frequency alternating current; A coupling module, the coupling module being configured to be disposed on a high-voltage transmission line insulator string on a high-voltage transmission line tower, the coupling module being electrically connected to the current conversion module group, and the coupling module converting the high-frequency alternating current into a high-frequency magnetic field; a receiving module, wirelessly connected to the coupling module, and configured to convert the high-frequency magnetic field into a high-frequency electric field; an energy conversion module, electrically connected to the monitoring device and the receiving module, the energy conversion module being configured to convert the high-frequency electric field into direct current and transmit the direct current to the monitoring device; A connecting assembly is connected to the housing and is used to connect to the high-voltage wire.

2. The charging device for a high-voltage transmission line according to claim 1, characterized in that: The current conversion module group includes an industrial frequency rectifier module and a high-frequency inverter module. The coupling module is electrically connected to the high-frequency inverter module, and the industrial frequency rectifier module is electrically connected to the power extraction module. The industrial frequency rectifier module is used to convert the alternating current into direct current, and the high-frequency inverter module is used to convert the direct current into high-frequency alternating current.

3. The charging device for a high-voltage transmission line according to claim 2, characterized in that: The housing has a first electrical connection line and a second electrical connection line. The power frequency rectifier module is electrically connected to the power taking module via the first electrical connection line, and the coupling module is electrically connected to the high frequency inverter module via the second electrical connection line.

4. The charging device for a high-voltage transmission line according to claim 2, characterized in that: Also included is a communication module, the communication module is provided in the housing, the communication module is electrically connected to the energy conversion module and the high-frequency inverter module to establish electrical communication between the energy conversion module and the high-frequency inverter module; The high-frequency inverter module is configured to receive the current and voltage signals of the energy conversion module and adjust the operating parameters according to the current signal to switch the current output mode of the energy conversion module; the current output mode includes a constant current output mode and a constant voltage current output mode.

5. The charging device for a high-voltage transmission line according to any one of claims 1 to 4, characterized in that: The connection assembly includes two wire spacers, which are respectively connected to two ends of the housing, and are both used to connect to the high-voltage wire.

6. The charging device for a high-voltage transmission line according to claim 5, characterized in that: The wire spacer includes a wire spacer body and at least one connecting arm arranged on the wire spacer body, the shell is inserted into the wire spacer body and connected to the wire spacer body, and the connecting arm on the same wire spacer is used for detachable connection with the high-voltage wire.

7. The charging device for a high-voltage transmission line according to claim 6, characterized in that: An inserting portion is provided at one end of the connecting arm away from the wire spacing body, and the inserting portion is used to be inserted into the high-voltage wire; The charging device for a power transmission line is characterized in that the conductor spacer further includes at least two connecting members, which are correspondingly arranged on the connecting arm and correspondingly connected to the plug-in portion for connecting the connecting arm to the high-voltage conductor.

8. The charging device for a high-voltage transmission line according to claim 7, characterized in that: The plug-in portion includes a through hole provided at the end of the connecting arm, and a notch is provided on the connecting arm and communicates with the through hole, so that two clamping sections are formed on the connecting arm, and a threaded portion is provided on the clamping section; The connecting piece is a nut, which is sleeved on the two clamping sections on the same connecting arm and is threadedly connected to the threaded portion.

9. The number of the high voltage connecting arms according to claim 7 is at least two, and the connecting arms are evenly spaced around the circumference of the wire spacing body.

10. The charging device for a high-voltage power transmission line according to any one of claims 1 to 4, characterized in that: The power taking module is a power taking coil.

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