High-voltage transmission line monitoring device and method for obtaining energy by utilizing self shell

Abstract

The invention belongs to the technical field of high-voltage power transmission line monitoring, and particularly relates to a high-voltage power transmission line monitoring device and method utilizing a shell to obtain energy. According to the device, a shielding area and an energy collection area are arranged in a shell, a sensing part is arranged in the shielding area, and an energy taking part is arranged in the energy collection area; a grounding terminal is arranged on the shell, and the inner end of the grounding terminal is connected with the energy taking part through a wire; the lower end of the shell is connected with insulating fixed supporting legs. According to the invention, the shell-capacitor plate integrated design is realized for the first time, functional units and structural parts are deeply fused, the number of parts and the size of the device are reduced, the application scene of the device is widened, the installation process is simplified, the maintenance cost is reduced, the lean level is improved, and the device adapts to the development trend of miniaturization, self-energy-taking, wiring-free and low-operation-maintenance of the monitoring device in the power industry. The problem of power supply of monitoring devices in remote areas is effectively solved, the problem of contradiction between energy taking efficiency and electromagnetic compatibility is solved, and the technical blank in the field is filled.

Description

Technical Field

[0001] This invention belongs to the field of high-voltage transmission line monitoring technology, and particularly relates to a high-voltage transmission line monitoring device and method that utilizes its own casing for power extraction. More specifically, it is a self-powered device that utilizes the parasitic capacitance between the monitoring device casing and the high-voltage transmission line for power extraction, and is suitable for condition monitoring of high-voltage AC transmission lines. Background Technology

[0002] In existing technologies, the power supply for high-voltage transmission line monitoring devices mainly relies on two methods: current transformer (CT) power extraction and photovoltaic power supply. However, these methods have significant drawbacks in practical applications. (1) Defects of CT energy harvesting technology.

[0003] CT (Transmission Line Detector) installation is complex and affects line insulation. For ultra-high voltage transmission lines above 500kV, the magnetic saturation characteristics of traditional CT cores cause the secondary output power to fluctuate drastically with the load current. Under light load conditions, it is difficult to maintain the normal operation of the monitoring device, while under heavy load conditions, there is a risk of core overheating. In addition, the application of non-contact installation between the magnetic core and the conductor further reduces the CT energy harvesting efficiency.

[0004] (2) Limitations of photovoltaic power supply systems.

[0005] The energy supply of photovoltaic (PV) power systems is subject to multiple constraints, including day-night cycles, seasonal variations, and weather conditions. During periods of continuous overcast and rainy weather, the typical PV power system has a short operating time, failing to meet the 24 / 7 power supply requirements of transmission line monitoring devices. High-voltage transmission lines are often erected in complex outdoor environments, where pollutants such as smog and dust can easily form a shading layer on the PV panel surface, leading to a decrease in photoelectric conversion efficiency. More seriously, snow cover in extremely cold regions or ultraviolet radiation aging in hot deserts accelerates the performance degradation of PV modules. These factors make it difficult to meet the stringent environmental adaptability requirements of the power industry by relying solely on PV power systems.

[0006] (3) Reliability challenges of modular design.

[0007] Current technical solutions typically operate CT power extraction and photovoltaic power supply as independent modules in parallel. While this physically separate design enables energy complementarity, it increases the device size. Multi-module integration not only increases the design complexity of the sealed structure but also introduces additional electrical connection points, increasing the risk of poor contact or insulation failure. In high-voltage fields with harsh electromagnetic environments, electromagnetic compatibility issues between modules can cause signal interference. Furthermore, the control logic complexity of dual-system parallel operation increases exponentially, resulting in a lower mean time between failures (MTBF) compared to a single-power supply system.

[0008] These technical deficiencies severely restrict the widespread application of high-voltage transmission line monitoring devices. Current research trends indicate that developing non-contact energy harvesting technology has become a new direction for overcoming existing technological bottlenecks. Recent studies, such as CN113933564B, propose a non-contact voltage sensor, but it must rely on external capacitor plates; CN216487672U uses a toroidal transformer for power harvesting, which poses a risk of magnetic saturation.

[0009] In summary, the shortcomings of the existing technologies have prompted those skilled in the art to continuously research and develop new technologies. Summary of the Invention

[0010] To address the shortcomings of the existing technology, this invention provides a high-voltage transmission line monitoring device and method that utilizes its own casing for energy extraction. The aim is to integrate the monitoring device casing as a capacitor plate, achieving a unified structural and functional design, fully utilizing the electric field energy of the high-voltage transmission line, and thus providing a stable power supply for the sensor.

[0011] The technical solution adopted by the present invention to achieve the above objectives is as follows: A high-voltage transmission line monitoring device that utilizes its own casing for energy harvesting has two spaces inside the casing: a shielded area and an energy harvesting area. The shielded area houses the sensing component, and the energy harvesting area houses the energy harvesting component. A grounding terminal is provided on the casing, and the inner end of the grounding terminal is connected to the energy harvesting component via a wire. An insulated fixed support is connected to the lower end of the casing. The sensing component includes sensors for sensing and measuring electrical or environmental parameters of the transmission line, data processing, and remote communication functions.

[0012] Furthermore, the housing comprises an upper housing and a lower housing, which are fixedly connected by bolts.

[0013] Furthermore, the housing is made of aluminum alloy, with an oxide layer on the surface of the aluminum alloy and a paint layer on the surface of the oxide layer.

[0014] Furthermore, the lower housing has a wire groove in the middle, which connects the shielding area and the energy harvesting area, and is used to introduce the power line of the energy harvesting part into the shielding area and connect it with the sensing part in the shielding area; the lower housing has a rubber strip groove at its four edges, and a rubber strip is placed inside the rubber strip groove.

[0015] Furthermore, the upper housing has screw holes at its four corners. A screw rod passes through the screw holes and is screwed into the corresponding screw thread on the lower housing to fix the lower housing to the upper housing. The upper housing also has an upper rubber strip groove at its four edges, which is positioned to correspond to the lower rubber strip groove on the lower housing, forming a cavity to clamp the rubber strip and seal the housing.

[0016] Furthermore, the surface of the shielded area is provided with a double-layer shielding layer of permalloy and ferrite, and the sensing part includes a sensor.

[0017] Furthermore, the surface of the energy harvesting area is provided with an insulating layer, and the energy harvesting part includes an energy harvesting circuit, which is as follows: The casing and the high-voltage transmission line form a parasitic capacitance C1, which is connected to the AC terminal of the rectifier bridge BR1. The other AC terminal of the rectifier bridge BR1 is grounded through a grounding terminal, forming an electrical circuit on the AC side. The DC terminal of the rectifier bridge BR1 is connected to the supercapacitor C2, and the induced current is rectified to charge the supercapacitor C2. The transient voltage suppressor T1 is connected in parallel with the supercapacitor C2, which powers the lithium battery charging chip U1 to charge the wide-temperature-range lithium battery BT1. The supercapacitor C2 and the wide-temperature-range lithium battery BT1 are connected in series with the first Schottky diode D1 and the second Schottky diode D2 to form a dual energy storage unit. The first Schottky diode D1 and the second Schottky diode D2 isolate the supercapacitor C2 from the wide-temperature-range lithium battery BT1. The dual energy storage unit, after passing through the third filter capacitor C3, the adjustable inductor L1, and the fourth filter capacitor C4 to form a π-type filter circuit, jointly powers the Buck-Boost power chip U2.

[0018] Furthermore, there are four insulating fixing feet, distributed at the four corners of the lower end of the lower housing. They are fixedly connected to the line towers via threaded insulating posts. One end of the insulating post is fixed to the housing with a bolt, and the other end of the insulating post is fixedly connected to the line tower with a bolt. The outer end of the grounding terminal adopts a bolt pressing structure and is grounded through a wire, so that the contact resistance is less than 0.1Ω.

[0019] A method for monitoring high-voltage transmission lines that utilizes energy extracted from their own casing, implemented using the aforementioned high-voltage transmission line monitoring device that utilizes energy extracted from its own casing, includes: implementation using the high-voltage transmission line monitoring device that utilizes energy extracted from its own casing as described in any one of claims 1-7, including: Step 1. Start the sensor and initialize the parameters of each unit, including sensing measurement, data processing, and remote communication; Step 2. The data processing unit controls the sensing and measurement unit to acquire electrical or environmental parameters of the transmission line, and converts the analog parameters into digital parameters and sends them back to the data processing unit; Step 3. The data processing unit processes and calculates the obtained digital parameters to obtain the final result; Step 4. The data processing unit transmits the final result to the remote communication unit and controls the remote communication unit to send the result to the remote data backend; Step 5. The data processing unit waits for the communication result from the remote communication unit. If the communication fails, the previous step is repeated. If the communication is successful, the next step is initiated. Step 6. The data processing unit controls the sensor to enter a sleep state to reduce energy consumption. At this time, the remote communication unit has a listening function. If the remote communication unit receives a wake-up command from the remote data backend, it will pass the wake-up command to the data processing unit. The data processing unit wakes up the sensor and proceeds to step 2. If the remote communication unit does not receive a wake-up command from the remote data backend, it will continue to step 6.

[0020] A computer device includes a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor. When the processor executes the computer program, it implements the steps of a high-voltage transmission line monitoring method that utilizes its own casing for energy extraction.

[0021] A computer storage medium storing a computer program, wherein when the computer program is executed by a processor, the steps of a high-voltage transmission line monitoring method that utilizes its own casing for energy extraction are implemented.

[0022] The present invention has the following beneficial effects and advantages: The device of this invention achieves efficient energy harvesting and electromagnetic shielding through a regional metal shell design. It has a dual energy harvesting circuit with supercapacitor and wide-temperature-range lithium battery, and can adaptively support a wide voltage range.

[0023] This invention is the first to achieve an integrated design of the housing and capacitor plates. Unlike traditional external capacitor plate solutions, this invention deeply integrates functional units and structural components, reducing the number of parts and the size of the device, broadening the application scenarios of the device, simplifying the installation process, reducing the maintenance cost, and improving the level of precision of the device. It adapts to the development trend of miniaturization, self-powering, wiring-free, and low-maintenance power industry monitoring devices.

[0024] The device of this invention features a segmented housing design. The interior of the housing is divided into an energy harvesting area and a shielding area. The energy harvesting area houses the energy extraction components, providing a stable power supply to the device. This area undergoes anodizing to form an insulating layer. The shielding area houses the sensing components, used for sensing and measuring electrical or environmental parameters of power transmission lines, data processing, and remote communication. The shielding area employs a double-layer shield of permalloy and ferrite to attenuate electromagnetic interference. By optimizing the housing structure, the contradiction between energy harvesting efficiency and electromagnetic compatibility is resolved, filling a technological gap in this field.

[0025] This invention relates to a high-efficiency energy harvesting circuit design. The circuit integrates a dual energy storage unit consisting of a supercapacitor and a wide-temperature-range lithium battery. The supercapacitor buffers transient high currents, while the lithium battery provides continuous discharge capability. Energy distribution optimization is achieved through an adaptive circuit. A wide-range adjustable filter network is formed by combining a π-type filter circuit with an adjustable inductor.

[0026] This invention maintains stable operation even under harsh environments such as lightning strikes, switching overvoltages, and sudden temperature changes. Compared to traditional CT power harvesting technology, its wide voltage adaptability and passive power supply characteristics make it particularly suitable for scenarios such as transmission line condition monitoring and fault indication, effectively solving the power supply problem for monitoring devices in remote areas. It is applicable to all-weather condition monitoring of high-voltage AC transmission lines, demonstrating significant technological advancement and market application value. Attached Figure Description

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a three-dimensional schematic diagram of the external structure of the device of the present invention; Figure 2 This is a perspective view of the internal structure of the device of the present invention; Figure 3 This is a top view of the lower housing of the device of the present invention; Figure 4 This is a bottom-view schematic diagram of the upper housing of the device of the present invention; Figure 5 This is a schematic diagram of the working principle of the energy harvesting circuit in the device of the present invention.

[0028] In the diagram: 1. Lower housing; 2. Upper housing; 3. Paint layer; 4. Oxide layer; 5. Aluminum alloy; 6. Grounding terminal; 7. Insulated fixing foot; 8. Shielding area; 9. Energy harvesting area; 10. Screw clip; 11. Wire groove; 12. Lower adhesive strip groove; 13. Screw hole; 14. Upper adhesive strip groove; 15. Parasitic capacitor C1; BR1 rectifier bridge; C2 supercapacitor; T1 transient voltage suppressor; U1 lithium battery charging chip; BT1 wide temperature range lithium battery; D1 first Schottky diode; D2 second Schottky diode; C3 third filter capacitor; L1 adjustable inductor; C4 fourth filter capacitor; U2 Buck-Boost power chip. Detailed Implementation

[0029] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0031] The following reference Figures 1-5 The technical solutions of some embodiments of the present invention are described below.

[0032] Example 1

[0033] This invention provides an embodiment of a high-voltage transmission line monitoring device that utilizes its own casing for energy extraction. The device forms a parasitic capacitive coupling structure between the metal casing and the high-voltage transmission line through electromagnetic induction, with a typical capacitance value of 0.5-5pF. It can couple μA-level displacement currents within a voltage range of 6-1000kV. This fully utilizes the electric field energy of the high-voltage transmission line to provide a stable power supply for the sensor.

[0034] The core technology of the device of this invention comprises the following three levels: (1) Structural optimization design. The metal casing is made of high-conductivity aluminum alloy, and its surface is treated with anodizing and insulating paint to ensure stable capacitive coupling characteristics even in extreme weather conditions. The interior of the casing is divided into an energy harvesting area and a shielding area, balancing energy extraction efficiency and electromagnetic compatibility.

[0035] (2) Secondary energy processing. This device integrates a dual energy storage unit consisting of a supercapacitor and a wide-temperature-range lithium battery. The supercapacitor buffers transient high currents, while the lithium battery provides continuous discharge capability. Energy distribution is optimized through adaptive circuitry. The wide-temperature-range lithium battery can operate normally in environments ranging from -40℃ to 85℃, making it suitable not only for extremely cold regions but also for high-temperature industrial environments.

[0036] (3) Safety protection features. The device of this invention adopts a fully enclosed metal casing design, which meets the protection requirements for outdoor electrical equipment. The internal circuit is equipped with multi-level overvoltage protection to prevent component breakdown. The grounding terminal uses a bolt-fitted structure to ensure that the contact resistance is less than 0.1Ω, meeting the safety specifications for high-voltage equipment grounding.

[0037] More specifically, such as Figure 1 As shown, Figure 1 This is a three-dimensional schematic diagram of the external structure of the device of the present invention. The housing of the device of the present invention includes a lower housing 1, an upper housing 2, a paint layer 3, an oxide layer 4, an aluminum alloy 5, a grounding terminal 6, an insulating fixing foot 7, a shielding area 8, an energy harvesting area 9, a screw clip 10, a wire groove 11, a lower adhesive strip groove 12, a screw hole 13, and an upper adhesive strip groove 14.

[0038] The housing of the device of this invention is made of aluminum alloy 5. Anodizing treatment is applied to the surface of the aluminum alloy 5 to form an oxide layer 4, and then insulating spray painting is applied to the surface of the oxide layer 4 to form a spray paint layer 3. The upper housing 2 and the lower housing 1 are fixed together by four bolts. The outer end of the grounding terminal 6 adopts a bolt-fitted structure and is grounded via a wire to ensure a contact resistance of less than 0.1Ω. The inner end of the grounding terminal 6 is connected to the power extraction circuit via a wire. Four insulating fixing feet 7 are provided, distributed at the four corners of the lower end of the lower housing 1. Insulation and fixation between the device and the line tower are achieved through threaded insulating posts. One end of the insulating post is fixed to the housing by a bolt, and the other end of the insulating post is fixed to the line tower by a bolt.

[0039] like Figure 2 As shown, Figure 2 This is a perspective view of the internal structure of the device of the present invention. The interior of the housing is divided into two spaces: a shielded area 8 and an energy harvesting area 9. The shielded area 8 houses the sensing component, and its surface is shielded with a double layer of permalloy and ferrite to attenuate electromagnetic interference. The sensing component includes sensors used to realize the sensing and measurement of electrical or environmental parameters of the transmission line, data processing, and remote communication functions. The energy harvesting area 9 houses the energy harvesting component, and its surface is anodized to form an insulating layer.

[0040] like Figure 3 As shown, Figure 3 This is a top view of the lower housing of the device of the present invention. Screw clips 10 are provided at each of the four corners of the lower housing 1 for fixing it to the upper housing 2. A wire groove 11 is provided in the middle of the lower housing 1, through which a power cable passes, connecting the shielding area 8 and the energy harvesting area 9. One end of the power cable is connected to the output terminal of the Buck-Boost power chip U2 on the energy harvesting circuit in the energy harvesting area 9, and the other end of the power cable is connected to the input terminal of the voltage regulation chip on the sensor in the shielding area 8. A lower rubber strip groove 12 is provided at the four edges of the lower housing 1 for placing a rubber strip. like Figure 4 As shown, Figure 4 This is a bottom-view plan view of the upper housing of the device of the present invention. The upper housing 2 has screw holes 13 at its four corners. A screw passes through the screw holes 13 and is screwed into the screw thread 10 of the lower housing 1, thereby fixing the lower housing 1 to the upper housing 2. The upper housing 2 has upper adhesive strip grooves 14 at its perimeter, which correspond to the lower adhesive strip grooves 12 on the lower housing 1, forming a cavity to clamp the rubber strip and achieve a seal.

[0041] The energy harvesting section includes an energy harvesting circuit, which consists of a parasitic capacitor C1, a rectifier bridge BR1, a supercapacitor C2, a transient voltage suppressor T1, a lithium battery charging chip U1, a wide-temperature-range lithium battery BT1, a first Schottky diode D1, a second Schottky diode D2, a third filter capacitor C3, an adjustable inductor L1, a fourth filter capacitor C4, and a Buck-Boost power chip U2.

[0042] The metal casing of this device forms a parasitic capacitance C1 with the high-voltage transmission line. This parasitic capacitance C1 is connected to the AC terminal of the rectifier bridge BR1, and the other AC terminal of BR1 is grounded through grounding terminal 6, thus forming an AC-side electrical circuit. The DC terminal of BR1 is connected to the supercapacitor C2, and the induced current, after rectification, charges the supercapacitor C2. A transient voltage suppressor T1 is connected in parallel with the supercapacitor C2, capable of discharging overvoltage and overcurrent, protecting the energy extraction circuit from breakdown. Simultaneously, the supercapacitor C2 also provides excellent buffering for overcurrent. On one hand, the supercapacitor C2 powers the lithium battery charging chip U1, enabling the charging of the wide-temperature-range lithium battery BT1. On the other hand, the supercapacitor C2 and the wide-temperature-range lithium battery BT1 are connected in series with the first Schottky diode D1 and the second Schottky diode D2, respectively, forming a dual energy storage unit. This dual energy storage unit, after passing through a π-type filter circuit composed of the third filter capacitor C3, the adjustable inductor L1, and the fourth filter capacitor C4, jointly powers the Buck-Boost power chip U2. The function of the first Schottky diode D1 and the second Schottky diode D2 is to isolate the supercapacitor C2 from the wide-temperature-range lithium battery BT1, thus preventing disordered mutual charging.

[0043] Example 2 The present invention provides an embodiment of a high-voltage transmission line monitoring device that utilizes its own casing for energy extraction, wherein the sensor in the sensing part is a current sensor.

[0044] Everything else is the same as in Example 1.

[0045] Example 3 The present invention provides an embodiment of a high-voltage transmission line monitoring device that utilizes its own casing for energy extraction, wherein the sensor in the sensing part is a voltage sensor.

[0046] Everything else is the same as in Example 1.

[0047] Example 4 The present invention provides an embodiment of a high-voltage transmission line monitoring device that utilizes its own casing to extract energy.

[0048] When the device is used to monitor the leakage current of electrical equipment and also measure the temperature, the sensors in the sensing part of the present invention are selected as a current sensor and a temperature sensor. The current sensor and the temperature sensor are both set inside the shielded area 8, and both are powered by the power harvesting circuit. Apart from this, there is no other connection relationship.

[0049] Everything else is the same as in Example 1.

[0050] Example 5 The present invention provides an embodiment of a high-voltage transmission line monitoring device that utilizes its own casing to extract energy.

[0051] When the device is used to monitor the leakage current of electrical equipment, and also to measure temperature and humidity, the sensors of the sensing part described in this invention are selected as current sensors and temperature and humidity sensors. The current sensors and temperature and humidity sensors are both set inside the shielded area 8, and both are powered by the power harvesting circuit.

[0052] Everything else is the same as in Example 1.

[0053] Example 6 This invention provides another embodiment, which is a high-voltage transmission line monitoring method that utilizes its own casing for energy extraction. This method is implemented using the high-voltage transmission line monitoring device described in Embodiment 1 that utilizes its own casing for energy extraction. Figure 5 As shown, Figure 5 This is a schematic diagram of the working principle of the energy harvesting circuit in the device of the present invention.

[0054] A high-voltage transmission line monitoring method utilizing its own casing for energy extraction is based on the charge status of the supercapacitor C2. The operating state of the energy extraction circuit can be divided into three states: energy storage state, normal state, and overcharge state. The working principle of each state is as follows: (1) Energy Storage State: Due to the weak induced current and the large capacity of the supercapacitor C2, the supercapacitor slowly stores energy during this stage. The voltage across its terminals is low and insufficient to support the operation of the lithium battery charging chip U1 and the Buck-Boost power chip U2. In this state, the energy harvesting circuit is in an energy storage state and cannot supply power to the device.

[0055] (2) Normal state: As the supercapacitor C2 accumulates charge, its voltage gradually increases. When it reaches the start-up voltage of the lithium battery charging chip U1, the supercapacitor C2 begins to charge the wide-temperature-range lithium battery BT1. When the voltage of the supercapacitor C2 reaches the start-up voltage of the Buck-Boost power chip U2 and is higher than the voltage of the wide-temperature-range lithium battery BT1, the supercapacitor C2 begins to drive the Buck-Boost power chip U2 to work. When the voltage of the wide-temperature-range lithium battery BT1 is higher than the voltage of the supercapacitor C2 and reaches the start-up voltage of the Buck-Boost power chip U2, the wide-temperature-range lithium battery BT1 begins to drive the Buck-Boost power chip U2 to work. In this state, the energy harvesting circuit supplies power to the device of the present invention.

[0056] (3) Overcharge state: When the wide-temperature-range lithium battery BT1 is fully charged and the rate at which the supercapacitor C2 accumulates power exceeds the rate at which the Buck-Boost power chip U2 consumes power, the voltage of the supercapacitor C2 will increase. This can lead to the voltage exceeding the rated operating voltage of the power harvesting circuit, or even damage to the power harvesting circuit. To avoid this problem, the power harvesting circuit is equipped with a transient voltage suppressor T1. Whenever the voltage of the supercapacitor C2 becomes too high, the transient voltage suppressor T1 will discharge, keeping the voltage of the supercapacitor C2 within a reasonable range. In this state, the power harvesting circuit can supply power to the device.

[0057] The sensor does not start when the energy harvesting circuit is in the energy storage state.

[0058] The sensor activates when the power harvesting circuit is in normal or overcharged state. The steps by which the sensor performs its monitoring function are as follows: Step 1. Start the sensor and initialize the parameters of each unit, including sensing measurement, data processing, and remote communication; Step 2. The data processing unit controls the sensing and measurement unit to acquire electrical or environmental parameters of the transmission line, and converts the analog parameters into digital parameters and sends them back to the data processing unit; Step 3. The data processing unit processes and calculates the obtained digital parameters to obtain the final result; Step 4. The data processing unit transmits the final result to the remote communication unit and controls the remote communication unit to send the result to the remote data backend; Step 5. The data processing unit waits for the communication result from the remote communication unit. If the communication fails, repeat step 4. If the communication is successful, proceed to step 6. Step 6. The data processing unit controls the sensor to enter a sleep state to reduce energy consumption. At this time, the remote communication unit has a listening function. If the remote communication unit receives a wake-up command from the remote data backend, it will pass the wake-up command to the data processing unit. The data processing unit wakes up the sensor and proceeds to step 2. If the remote communication unit does not receive a wake-up command from the remote data backend, it will continue to step 6.

[0059] Example 7 Based on the same inventive concept, this embodiment of the invention also provides a computer device, including a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor. When the processor executes the computer program, it implements the steps of the high-voltage transmission line monitoring method using its own casing as described in Embodiment 6.

[0060] Example 8 Based on the same inventive concept, this embodiment of the invention also provides a computer storage medium storing a computer program, which, when executed by a processor, implements the steps of the high-voltage transmission line monitoring method using its own casing as described in Embodiment 6.

[0061] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0062] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0063] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0064] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0065] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "connection" and "fixed" should be interpreted broadly; for example, "connection" can mean a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0066] In the description of this invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description, and is not intended to indicate or imply that the device or unit referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0067] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A high-voltage transmission line monitoring device that utilizes its own casing for energy extraction, characterized in that: The housing contains two spaces: a shielded area (8) and an energy harvesting area (9). The shielded area (8) contains a sensing component, and the energy harvesting area (9) contains an energy harvesting component. A grounding terminal (6) is provided on the housing, and the inner end of the grounding terminal (6) is connected to the energy harvesting component via a wire. An insulated fixed support foot (7) is connected to the lower end of the housing. The sensing component includes a sensor, which is used to realize the sensing and measurement of electrical or environmental parameters of the power transmission line, data processing, and remote communication functions.

2. The high-voltage transmission line monitoring device that utilizes its own casing for energy harvesting according to claim 1, characterized in that: The housing consists of an upper housing (2) and a lower housing (1), which are fixedly connected by bolts. The housing is made of aluminum alloy (5), and an oxide layer (4) is provided on the surface of the aluminum alloy (5), and a paint layer (3) is provided on the surface of the oxide layer (4).

3. A high-voltage transmission line monitoring device that utilizes its own casing for energy harvesting according to claim 2, characterized in that: The lower housing (1) has a wire groove (11) in the middle part, which connects the shielding area (8) and the energy harvesting area (9) to introduce the power line of the energy harvesting part in the energy harvesting area (9) into the shielding area (8) and connect it with the sensing part in the shielding area (8); the lower housing (1) has a lower rubber strip groove (12) at the four edges, and a rubber strip is built into the lower rubber strip groove (12).

4. A high-voltage transmission line monitoring device that utilizes its own casing for energy extraction according to claim 2, characterized in that: The upper housing (2) has screw holes (13) at its four corners. A screw rod passes through the screw holes (13) and is screwed into the corresponding screw thread (10) on the lower housing (1) to fix the lower housing (1) and the upper housing (2) together. The upper housing (2) also has an upper rubber strip groove (14) at its four edges. The rubber strip groove (14) is positioned corresponding to the lower rubber strip groove (12) on the lower housing (1) to form a cavity, clamp the rubber strip, and seal the housing.

5. A high-voltage transmission line monitoring device that utilizes its own casing for energy harvesting according to claim 1, characterized in that: The surface of the shielding area (8) is provided with a double-layer shielding layer of permalloy and ferrite, and the sensing part includes a sensor.

6. A high-voltage transmission line monitoring device that utilizes its own casing for energy harvesting according to claim 1, characterized in that: The surface of the energy harvesting area (9) is provided with an insulating layer, and the energy harvesting part includes an energy harvesting circuit, which is: The casing and the high-voltage transmission line form a parasitic capacitance C1. The parasitic capacitance C1 is connected to the AC terminal of the rectifier bridge BR1. The other AC terminal of the rectifier bridge BR1 is grounded through the grounding terminal (6) to form an electrical circuit on the AC side. The DC terminal of the rectifier bridge BR1 is connected to the supercapacitor C2. The induced current is rectified to charge the supercapacitor C2. The transient voltage suppressor T1 is connected in parallel with the supercapacitor C2. The supercapacitor C2 supplies power to the lithium battery charging chip U1 to charge the wide-temperature range lithium battery BT1. The supercapacitor C2 and the wide-temperature range lithium battery BT1 are connected in series with the first Schottky diode D1 and the second Schottky diode D2 to form a dual energy storage unit. The first Schottky diode D1 and the second Schottky diode D2 isolate the supercapacitor C2 from the wide-temperature range lithium battery BT1. The dual energy storage unit is connected to the Buck-Boost power chip U2 after passing through the third filter capacitor C3, the adjustable inductor L1 and the fourth filter capacitor C4 to form a π-type filter circuit.

7. A high-voltage transmission line monitoring device that utilizes its own casing for energy extraction according to claim 1, characterized in that: There are four insulating fixed feet (7), which are distributed at the four corners of the lower end of the lower housing (1). They are fixedly connected to the line tower by insulating posts with threaded fasteners. One end of the insulating post is fixed to the housing by bolts, and the other end of the insulating post is fixedly connected to the line tower by bolts. The outer end of the grounding terminal (6) adopts a bolt pressing structure and is grounded by a wire, so that the contact resistance is less than 0.1Ω.

8. A method for monitoring high-voltage transmission lines that utilizes energy harvested from their own casing, characterized in that: This is achieved using a high-voltage transmission line monitoring device that harvests energy from its own casing, as described in any one of claims 1-7, comprising: Step 1. Start the sensor and initialize the parameters of each unit, including sensing measurement, data processing, and remote communication; Step 2. The data processing unit controls the sensing and measurement unit to acquire electrical or environmental parameters of the transmission line, and converts the analog parameters into digital parameters and sends them back to the data processing unit; Step 3. The data processing unit processes and calculates the obtained digital parameters to obtain the final result; Step 4. The data processing unit transmits the final result to the remote communication unit and controls the remote communication unit to send the result to the remote data backend; Step 5. The data processing unit waits for the communication result from the remote communication unit. If the communication fails, the previous step is repeated. If the communication is successful, the next step is initiated. Step 6. The data processing unit controls the sensor to enter a sleep state to reduce energy consumption. At this time, the remote communication unit has a listening function. If the remote communication unit receives a wake-up command from the remote data backend, it will pass the wake-up command to the data processing unit. The data processing unit wakes up the sensor and proceeds to step 2. If the remote communication unit does not receive a wake-up command from the remote data backend, it will continue to step 6.

9. A computer device, comprising a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the high-voltage transmission line monitoring method according to claim 8, which utilizes its own casing for energy extraction.

10. A computer storage medium, characterized in that: The computer storage medium contains a computer program, which, when executed by a processor, implements the steps of the high-voltage transmission line monitoring method using its own casing as described in claim 8.

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