Friction nanometer-electromagnetic hybrid power generation system for 220kV power transmission line

Abstract

The invention discloses a friction nanometer-electromagnetic hybrid power generation system for a 220kV power transmission line, and relates to the technical field of power generation systems. Comprising a cable hoisting shell used for hanging a 220kV power cable; the generator hanger is fixed at the lower part of the cable hoisting shell; the friction nanometer-electromagnetic hybrid generator is fixed on the generator hanging bracket through a generator shell; fan blades are mounted on a main shaft of the friction nanometer-electromagnetic hybrid generator, a polytetrafluoroethylene film material is wound on a stator of the friction nanometer-electromagnetic hybrid generator, and a PVC (polyvinyl chloride) film material is adhered to the inner wall of the generator shell; according to the invention, weak mechanical energy in the environment is converted into electric energy, a more stable, reliable and efficient energy source is provided for power transmission line network monitoring equipment, the adaptability and reliability are higher, and the requirements of different application scenes can be met.

Description

Technical Field

[0001] The invention relates to the technical field of power generation systems, and in particular to a friction nano-electromagnetic hybrid power generation system for a 220kV power transmission line. Background Art

[0002] 220kV high-voltage transmission lines are a key component of the power transmission network, responsible for transmitting large amounts of electricity from power stations to various substations and user terminals. These lines are usually erected at high altitudes, spanning a wide area, and are easily affected by the natural environment (such as wind, rain, snow, and ice). In addition, due to long-term exposure to the outdoors, transmission lines and their ancillary equipment need to have good weather resistance and reliability, and their working status needs to be monitored to ensure normal operation.

[0003] The traditional way to monitor transmission lines relies on regular manual inspections, which is not only inefficient but also costly. With the development of smart grids, more and more sensors are being used to monitor line status in real time, including parameters such as temperature, humidity, wind speed, and tilt angle. However, most of these sensors rely on battery power, which has limited power and is inconvenient to replace, especially in remote areas or difficult-to-reach locations. Although traditional solar and wind power generation are feasible, they are greatly affected by weather conditions, resulting in low stability and high installation and maintenance costs.

[0004] In order to realize intelligent management of transmission lines, a power generation system is provided which can utilize tiny mechanical vibrations on the transmission lines to provide a sustainable energy source to support various monitoring equipment along the lines. Summary of the invention

[0005] The present invention is intended to solve the technical problems of poor stability, reliability and weak adaptability of various monitoring equipment on transmission lines that rely on traditional solar and wind power supply. The purpose is to provide a friction nano-electromagnetic hybrid power generation system for 220kV transmission lines, which realizes the conversion of weak mechanical energy in the environment into electrical energy, and provides a more stable, reliable and efficient energy source for transmission line network monitoring equipment. It has stronger adaptability and reliability and can meet the needs of different application scenarios.

[0006] The present invention is achieved through the following technical solutions:

[0007] A friction nano-electromagnetic hybrid power generation system for a 220 kV transmission line, comprising:

[0008] Cable hoisting housing, used to mount 220kV power cables;

[0009] Generator hanger, fixed to the lower part of the cable hoisting housing;

[0010] The friction nano-electromagnetic hybrid generator is fixed to the generator hanger through the generator housing;

[0011] The main shaft of the friction nano-electromagnetic hybrid generator is equipped with fan blades, the stator of the friction nano-electromagnetic hybrid generator is wound with polytetrafluoroethylene film material, and the inner wall of the generator shell is pasted with PVC film material.

[0012] The power generation system disclosed in the present invention can be directly mounted on a 220kV transmission line power cable, and can be used to collect low-speed wind energy and low-frequency vibration energy in the environment, and convert weak mechanical energy such as the dancing of the transmission line and breeze into electrical energy, making full use of the weak energy in the environment, providing a more stable, reliable and efficient energy source, and providing electrical energy for the transmission line network monitoring equipment.

[0013] Furthermore, the cable hanging shell comprises a cable hanging upper shell and a cable hanging lower shell, and the cable hanging upper shell and the cable hanging lower shell are connected by a hinge assembly.

[0014] Furthermore, the cable hoisting upper shell and the cable hoisting lower shell are respectively provided with an upper connecting ear and a lower connecting ear, the upper connecting ear is provided with a first fixing hole, the lower connecting ear is provided with a second fixing hole, and the first fixing hole corresponds to the second fixing hole.

[0015] Furthermore, a third fixing hole is provided on the lower shell of the cable hoisting device for connecting to the generator hanger.

[0016] Furthermore, the generator hanger includes a U-shaped lifting ring and fourth fixing holes opened at both ends of the U-shaped lifting ring.

[0017] Furthermore, the generator housing is fixed to the bottom of the U-shaped lifting ring and is integrally formed with the U-shaped lifting ring.

[0018] Furthermore, the friction nano-electromagnetic hybrid generator is fixed inside the generator housing.

[0019] Furthermore, the generator housing has a front end cover and a rear end cover, and the friction nano-electromagnetic hybrid generator is fixed to the inner side of the front end cover.

[0020] Furthermore, the inner walls of the cable hoisting upper shell and the cable hoisting lower shell are respectively provided with an upper insulating ring and a lower insulating ring.

[0021] Furthermore, the upper insulating ring and the lower insulating ring are connected to the cable hoisting upper shell and the cable hoisting lower shell through hinges.

[0022] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0023] 1. The power generation system disclosed in the present invention can be directly mounted on a 220kV transmission line power cable, and can be used to collect low-speed wind energy and low-frequency vibration energy in the environment, and convert weak mechanical energy such as the dancing of the transmission line and breeze into electrical energy, making full use of the weak energy in the environment, providing a more stable, reliable and efficient energy source, and providing electrical energy for the transmission line network monitoring equipment.

[0024] 2. The power generation system of the present invention can not only improve the energy conversion efficiency, but also has stronger adaptability and reliability compared to traditional solar and wind power generation, and can meet the needs of different application scenarios.

[0025] 3. The power generation system of the present invention will facilitate the intelligent management and maintenance of 220kV transmission lines, and help build a more intelligent and green power transmission network. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the cable hoisting housing;

[0029] Figure 3 It is a structural schematic diagram of the generator hanger;

[0030] Figure 4 Schematic diagram of the connection structure between the generator housing and the friction nano-electromagnetic hybrid generator.

[0031] Marks and corresponding parts names in the attached drawings:

[0032] 1-cable hoisting upper shell, 101-upper connecting ear, 102-first fixing hole, 2-cable hoisting lower shell, 201-lower connecting ear, 202-second fixing hole, 203-third fixing hole, 3-hinge assembly, 4-upper insulating ring, 5-lower insulating ring, 6-generator hanger, 601-U-shaped lifting ring, 602-fourth fixing hole, 7-generator shell, 8-fan blades, 9-friction nano-electromagnetic hybrid generator, 10-front end cover, 11-rear end cover. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0034] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to one of ordinary skill in the art that these specific details are not necessarily employed to practice the present invention. In other embodiments, in order to avoid obscuring the present invention, well-known structures, circuits, materials, or methods are not specifically described.

[0035] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] In the description of the present invention, the indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the product of the application is usually placed when in use, or is the orientation or position relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0037] Meanwhile, the terms "set", "assemble", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In order to realize the intelligent management of transmission lines, a sustainable energy source is urgently needed to support various monitoring equipment along the lines. Although traditional solar and wind power generation are feasible, they are greatly affected by weather conditions, have poor stability and adaptability, and have high installation and maintenance costs. Therefore, it is particularly important to develop an energy harvesting technology that can utilize tiny mechanical vibrations on transmission lines.

[0039] Based on the principle of triboelectric effect and electrostatic induction, the triboelectric nanogenerator (TENG) can effectively convert low-frequency and low-amplitude mechanical motion into electrical energy. It has the advantages of simple structure, low cost and high energy density, and is particularly suitable for collecting weak mechanical energy in the environment.

[0040] According to the differences in structure and working mode, there are four main forms of friction nanogenerators, namely vertical contact separation, in-plane contact sliding, single electrode, and independent layer. This project takes into account the meteorological historical conditions such as the average daily wind speed in the Sichuan Basin area, and studies the friction electrification and electrostatic induction coupling working processes of four main forms of friction nanogenerators in the above working scenarios, targeting the low-speed wind energy of 3 to 14 m / s in the transmission line and the low-frequency vibration of 0.5 to 100 Hz caused by it. Based on the finite element analysis method and software, the electro-magnetic-mechanical self-consistent simulation model of the four main forms of friction nanogenerators is constructed. Then, the established model is used and according to the principles of charge conservation and electrostatic balance to solve the initial charge distribution of contact surfaces of different shapes under open circuit and passage conditions, analyze the influence of contact dielectric materials, electrode spacing, working layer width, and stacking number on the output performance of the device, study the influence of external load impedance matching on the output performance of the device, and determine the quantitative coupling relationship between the output performance of the device and the vibration frequency and wind speed conditions, so as to determine the material and structural form of the friction nanogenerator suitable for the current scenario, and provide theoretical support for the design of friction nano-electromagnetic hybrid power generation devices.

[0041] Electromagnetic generator (EMG) generates induced electromotive force by cutting magnetic flux lines with wires. EMG is suitable for scenarios with large displacement or speed changes. Its output power is relatively stable and easy to integrate into existing electrical systems.

[0042] Therefore, combining the advantages of TENG and EMG, the present invention discloses a friction nano-electromagnetic hybrid power generation system for 220kV transmission line hanging, aiming to make full use of various mechanical motion forms on the transmission line to provide a more stable and efficient energy source. This hybrid system can not only improve the energy conversion efficiency, but also enhance the adaptability and reliability of the system to meet the needs of different application scenarios.

[0043] The power generation system disclosed in the present invention can be directly mounted on the power cable of a 220kV transmission line, and can be used to collect 3-14m / s low-speed wind energy and 0.5-100Hz low-frequency vibration energy in the environment, which will facilitate the intelligent management and maintenance of 220kV transmission lines. It can efficiently utilize the weak energy in the environment, and at the same time provide power for the transmission line network monitoring equipment, helping to build a more intelligent and green power transmission network.

[0044] The technical solution of the present invention is further described in detail below in conjunction with embodiments.

[0045] Example 1

[0046] A friction nano-electromagnetic hybrid power generation system for 220kV transmission lines, such as Figure 1-4 As shown, including:

[0047] Cable hoisting housing, used to mount 220kV power cables;

[0048] The generator hanger 6 is fixed to the lower part of the cable hanging housing;

[0049] The friction nano-electromagnetic hybrid generator 9 is fixed on the generator hanger 6 through the generator housing 7;

[0050] The main shaft of the friction nano-electromagnetic hybrid generator 9 is installed with fan blades 8, the stator of the friction nano-electromagnetic hybrid generator 9 is wound with polytetrafluoroethylene film material, and the inner wall of the generator housing 7 is pasted with PVC film material.

[0051] The working principle of the power generation system of the present invention is: when there is low-speed wind energy and low-frequency vibration in the environment, the fan blades 8 rotate or the friction nano-electromagnetic hybrid generator 9 rubs and collides with the shell, thereby realizing the function of converting mechanical energy in the environment into electrical energy.

[0052] The power generation system disclosed in the present invention can be directly mounted on a 220kV transmission line power cable, and can be used to collect 3-14m / s low-speed wind energy and 0.5-100Hz low-frequency vibration energy in the environment, making full use of the weak energy in the environment, providing a more stable, reliable and efficient energy source, and providing electrical energy for the transmission line network monitoring equipment. The power generation system of the present invention can not only improve the energy conversion efficiency, but also enhance the adaptability and reliability of the system to meet the needs of different application scenarios.

[0053] The power generation system of the present invention will facilitate the intelligent management and maintenance of 220kV transmission lines, and help build a more intelligent and green power transmission network.

[0054] In one or more specific embodiments of the present invention, Figure 2 As shown, the cable hoisting housing comprises a cable hoisting upper housing 1 and a cable hoisting lower housing 2, and the cable hoisting upper housing 1 and the cable hoisting lower housing 2 are connected via a hinge assembly 3. The hinge assembly 3 realizes an effective connection between the cable hoisting upper housing 1 and the cable hoisting lower housing 2, and the upper connecting ear 101 and the lower connecting ear 201 cooperate with the first fixing hole 102 and the second fixing hole 202 to realize the fixing of the cable hoisting upper housing 1 and the cable hoisting lower housing 2.

[0055] The cable hoisting upper shell 1 and the cable hoisting lower shell 2 are respectively provided with an upper connecting ear 101 and a lower connecting ear 201, the upper connecting ear 101 is provided with a first fixing hole 102, and the lower connecting ear 201 is provided with a second fixing hole 202, and the first fixing hole 102 corresponds to the second fixing hole 202; the cable hoisting lower shell 2 is also provided with a third fixing hole 203 for connecting the generator hanger 6.

[0056] In one or more specific embodiments of the present invention, Figure 3 As shown, the generator hanger 6 includes a U-shaped ring 601 and fourth fixing holes 602 opened at both ends of the U-shaped ring 601. The fourth fixing hole 602 is fixed to the third fixing hole 203 of the cable hanging lower housing 2 by screws, thereby fixing the friction nano-electromagnetic hybrid generator 9.

[0057] The generator housing 7 is fixed to the bottom of the U-shaped hanging ring 601 and is integrally formed with the U-shaped hanging ring 601 . The generator housing 7 is used to fix the generator.

[0058] In one or more specific embodiments of the present invention, Figure 4 As shown, the friction nano-electromagnetic hybrid generator 9 is fixed inside the generator housing 7. Specifically, the generator housing 7 has a front end cover 10 and a rear end cover 11. The friction nano-electromagnetic hybrid generator 9 is fixed to the inner side of the front end cover 10. The front end cover 10, the rear end cover 11 and the generator housing 7 form an internal space for enclosing the friction nano-electromagnetic hybrid generator 9. The main shaft of the friction nano-electromagnetic hybrid generator 9 passes through the front end cover 10 and is fixed with fan blades 8.

[0059] In one or more specific embodiments of the present invention, Figure 1 As shown, the inner walls of the cable hoisting upper shell 1 and the cable hoisting lower shell 2 are respectively provided with an upper insulating ring 4 and a lower insulating ring 5, which play an insulating role. Specifically, the upper insulating ring 4 and the lower insulating ring 5 are connected to the cable hoisting upper shell 1 and the cable hoisting lower shell 2 through hinges.

[0060] Finally, it should be noted that the above specific embodiments are only used to explain in detail the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific implementation method of the present invention and is not used to limit the protection scope of the present invention. Although the present invention is described in detail with reference to the above specific embodiments, ordinary technicians in this field should understand that it is still possible to modify the technical solutions recorded in the above embodiments, or to replace or improve some or all of the technical features therein. These modifications, equivalent replacements and improvements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A friction nano-electromagnetic hybrid power generation system for 220kV transmission lines, characterized in that: include: Cable hoisting housing, used to mount 220kV power cables; A generator hanger (6) is fixed to the lower part of the cable hanging housing; A friction nano-electromagnetic hybrid generator (9) is fixed on a generator hanger (6) via a generator housing (7); The main shaft of the friction nano-electromagnetic hybrid generator (9) is equipped with fan blades (8), the stator of the friction nano-electromagnetic hybrid generator (9) is wound with polytetrafluoroethylene film material, and the inner wall of the generator housing (7) is adhered with PVC film material.

2. A friction nano-electromagnetic hybrid power generation system for 220kV transmission lines according to claim 1, characterized in that: The cable hanging housing comprises a cable hanging upper housing (1) and a cable hanging lower housing (2), and the cable hanging upper housing (1) and the cable hanging lower housing (2) are connected via a hinge assembly (3).

3. A friction nano-electromagnetic hybrid power generation system for 220kV transmission lines according to claim 2, characterized in that: The cable hoisting upper shell (1) and the cable hoisting lower shell (2) are respectively provided with an upper connecting ear (101) and a lower connecting ear (201); the upper connecting ear (101) is provided with a first fixing hole (102); the lower connecting ear (201) is provided with a second fixing hole (202); the first fixing hole (102) and the second fixing hole (202) are correspondingly matched.

4. A friction nano-electromagnetic hybrid power generation system for 220kV transmission lines according to claim 2, characterized in that: The cable hanging lower shell (2) is also provided with a third fixing hole (203) for connecting to the generator hanger (6).

5. The friction nano-electromagnetic hybrid power generation system for 220kV transmission lines according to claim 1, characterized in that: The generator hanger (6) comprises a U-shaped lifting ring (601) and fourth fixing holes (602) provided at two ends of the U-shaped lifting ring (601).

6. A friction nano-electromagnetic hybrid power generation system for 220kV transmission lines according to claim 5, characterized in that: The generator housing (7) is fixed to the bottom of the U-shaped lifting ring (601) and is integrally formed with the U-shaped lifting ring (601).

7. The friction nano-electromagnetic hybrid power generation system for 220kV transmission lines according to claim 1, characterized in that: The friction nano-electromagnetic hybrid generator (9) is fixed inside the generator housing (7).

8. The friction nano-electromagnetic hybrid power generation system for 220kV transmission lines according to claim 7, characterized in that: The generator housing (7) has a front end cover (10) and a rear end cover (11), and the friction nano-electromagnetic hybrid generator (9) is fixed to the inner side of the front end cover (10).

9. A friction nano-electromagnetic hybrid power generation system for 220kV transmission lines according to any one of claims 1 to 8, characterized in that: The inner walls of the cable hoisting upper shell (1) and the cable hoisting lower shell (2) are respectively provided with an upper insulating ring (4) and a lower insulating ring (5).

10. A friction nano-electromagnetic hybrid power generation system for 220kV transmission lines according to claim 9, characterized in that: The upper insulating ring (4) and the lower insulating ring (5) are connected to the cable hoisting upper shell (1) and the cable hoisting lower shell (2) via hinges.

Images