CN116846247A - Friction electric overhead transmission line wind-induced vibration energy collecting device and self-driving system thereof - Google Patents
Friction electric overhead transmission line wind-induced vibration energy collecting device and self-driving system thereof Download PDFInfo
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/04—Friction generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/50—Charging of capacitors, supercapacitors, ultra-capacitors or double layer capacitors
Abstract
The invention relates to a wind-induced vibration energy collecting device of a friction electric overhead transmission line and a self-driving system thereof, and belongs to the field of micro-nano energy. The vibration energy harvesting device comprises a helical structure TENG, a mass block and a moving guide rail. Wherein the mass block is connected with the spiral structure TENG; a through hole is formed in the center of the mass block, the moving guide rail is inserted into and penetrates through the spiral structure TENG from the through hole, the moving guide rail can assist the mass block to move in the vertical direction, and the spiral structure TENG is driven to contact and separate under the excitation of vibration so as to generate electric energy. Wherein the self-driven system comprises an energy management circuit, a housing and a collection device; the energy management circuit is connected with the spiral structure TENG and is used for conveying electric energy generated by the spiral structure TENG to a circuit micro-power consumption load; the housing is for integral packaging of the collection device and the energy management circuit. The invention can collect vibration energy of the transmission line and convert the vibration energy into electric energy, and maintain the work of the distributed sensing unit.
Description
Technical Field
The invention belongs to the field of micro-nano energy sources, and relates to a wind-induced vibration energy collecting device of a friction electric overhead transmission line and a self-driving system thereof.
Background
The novel intelligent power grid has higher requirements on the depth, breadth, density, frequency and precision of information perception, and aims to organically integrate a sensing technology, an information technology, an automatic control technology and the like with a power grid infrastructure so as to realize information interconnection and intercommunication and state holographic perception of links such as power grid transmission, distribution, use and storage. Therefore, a large number of distributed sensors are gradually applied to power grid running state monitoring, and electric quantity, state quantity, environment quantity and behavior quantity of each link in a system are comprehensively monitored to form an energy Internet bottom sensing infrastructure. The power transmission network is distributed in various complex environments, and various state indication marks are required to be perceived in real time through monitoring state quantity, so that reliable and stable operation of the power system is ensured. The energy supply of these large numbers of distributed sensors by the conventional method cannot achieve the long-term energy supply effect. By seeking available energy in the surrounding environment and efficiently converting it into electrical energy is a viable solution. The conductor vibration is commonly existed in overhead transmission lines, when the conductor is subjected to the action of transverse laminar wind, the karman vortex generated on the lee side is extremely easy to cause the conductor to generate micro-vibration alternating up and down, and redundant, stray, random and micro vibration energy is hopefully collected and further converted into available electric energy. Therefore, the novel micro-nano energy supply technology supported by the vibration energy collection technology effectively supplements the existing distributed sensing terminal energy supply technology, and has extremely important application value.
The friction nano generator (TENG) is based on the coupling of a friction electrification principle and an electrostatic induction principle, so that the friction nano generator has the capability of converting mechanical energy into electric energy, and a new way is brought for the collection of tiny, redundant and stray energy sources in the environment. The principle is that the surfaces of two materials with electronegativity difference are separated through periodic contact, and redundant mechanical energy in the surrounding environment can be directly converted into electric energy. TENG typically collects vibration energy in a contact-separation mode of operation, but the conversion efficiency and electrical energy output of conventional devices remain to be improved, and a complete self-driven system needs to be further built to address the energy supply problem of a wide range of micro-power distributed sensing units in overhead transmission lines.
Disclosure of Invention
Accordingly, the present invention is directed to a wind-induced vibration energy collecting device for a triboelectric overhead transmission line and a self-driving system thereof, which solve the energy supply problem of distributed sensing units on the line by collecting vibration energy.
In order to achieve the above purpose, the present invention provides the following technical solutions:
according to the scheme I, the wind-induced vibration energy collecting device for the friction electric overhead transmission line comprises a spiral structure TENG, a mass block and a moving guide rail. Wherein the mass block is connected with the spiral structure TENG; a through hole is formed in the center of the mass block, the moving guide rail is inserted into and penetrates through the spiral structure TENG from the through hole, the moving guide rail can assist the mass block to move in the vertical direction, and the spiral structure TENG is driven to contact and separate under the excitation of vibration so as to generate electric energy.
Optionally, the spiral structure TENG includes a spiral substrate, a first electrode, a second electrode, and a thin film; the first electrode and the second electrode are respectively attached to the upper surface and the lower surface of the spiral layer of the spiral substrate; the film is attached to the surface of the first electrode and a gap is formed between the film and the second electrode. The film and the second electrode generate frictional charge through contact. The preparation method of the spiral matrix comprises the following steps: firstly, cutting organic glass into a plurality of circular rings, wherein the circular rings are provided with openings; sequentially connecting the opening ends of the circular rings to form a three-dimensional spiral structure, so as to obtain a spiral matrix; gaps are arranged between the spiral layers of the spiral matrix for attaching the electrode and the film.
Optionally, the first electrode and the second electrode are metal layers selected from the group including, but not limited to, the following materials:
gold, silver, platinum, palladium, aluminum, nickel, copper, titanium, chromium, selenium, iron, manganese, molybdenum, tungsten, or vanadium, the alloy including aluminum alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, zinc alloy, manganese alloy, nickel alloy, lead alloy, tin alloy, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy, tantalum alloy, and the like.
Optionally, the film is a polymeric film selected from the group including, but not limited to, the following:
polydimethyl siloxane, polyethylene, polypropylene, polyvinylidene fluoride, polytetrafluoroethylene, polyvinyl chloride, fluorinated ethylene propylene copolymer, polytrifluoroethylene, polychloroprene, polyimide, aniline formaldehyde resin, polyoxymethylene, ethylcellulose, polyamide, melamine formaldehyde, polycarbonate, polyethylene glycol succinate, phenolic resin, neoprene, cellulose, natural rubber, ethylcellulose, cellulose acetate, polyethylene adipate, polydiallyl phthalate, rayon, fibrous sponge, polyurethane elastomer, styrene propylene copolymer, styrene butadiene copolymer, polyethylene propylene carbonate, rayon, polystyrene, polymethacrylate, polyvinyl alcohol, polyester, polyisobutylene, polyurethane flexible sponge, polydiphenol carbonate, polychloroether, polyethylene terephthalate, and the like.
The thickness of the polymer film is not less than 10 μm.
The second scheme is that the wind-induced vibration energy self-driving system of the overhead transmission line comprises an energy management circuit, a shell and the collecting device in the first scheme; the energy management circuit is connected with the spiral structure TENG in the collecting device and is used for conveying electric energy generated by the spiral structure TENG to a circuit micro-power consumption load; the housing is for integral packaging of the collection device and the energy management circuit.
Optionally, the energy management circuit includes a rectifier bridge, a storage capacitor, and a voltage regulator. The rectifier bridge is used for converting alternating current electric energy generated by the spiral structure TENG into direct current electric energy; the energy storage capacitor is used for storing direct-current electric energy; the voltage stabilizer is used for stably outputting direct-current electric energy to a micro-power consumption load.
Optionally, the housing comprises a top plate, a bottom plate and a hollow cylinder; the top plate and the bottom plate are respectively arranged at two ends of the hollow cylinder; the base plate is provided with a spiral structure TENG.
The invention has the beneficial effects that: the system can efficiently collect vibration energy of the overhead transmission line and convert the vibration energy into electric energy which can be used by the sensing unit, so as to maintain the passive work of the distributed sensing unit of the overhead transmission line of the power system.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in the following preferred detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of an energy harvesting device;
FIG. 2 is a schematic diagram of a spiral TENG structure;
FIG. 3 is a schematic diagram of the principle of operation of a spiral structure TENG;
fig. 4 is a schematic diagram of an energy management circuit configuration.
Reference numerals: 1-helix TENG; 2-mass block; 3-moving the guide rail; 4-a housing; 11-spiral layers; 12-electrode; 13-polymer film.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present invention by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the invention; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but not for indicating or suggesting that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present invention, and that the specific meaning of the above terms may be understood by those of ordinary skill in the art according to the specific circumstances.
The invention provides a wind-induced vibration energy self-driving system of a power transmission line, which is shown in figures 1-4, and comprises an energy collecting device, an energy management circuit and a shell, wherein the wind-induced vibration energy self-driving system is used for realizing functions of a distributed sensing unit with micro power consumption (10 mu W-10 mW) such as environmental quantity (wind force, wind direction, temperature, humidity, rainfall and the like) and wire state quantity (vibration, sag, tension, windage yaw, wire temperature) in the power transmission line.
Fig. 1 is a schematic structural diagram of a triboelectric vibration energy collecting device and a housing, wherein the triboelectric vibration energy collecting device mainly comprises a spiral structure TENG1 and a power assisting component. The auxiliary component comprises a mass block 2 and a moving guide rail 3, the lower surface of the mass block 2 is connected with the top end of the spiral structure TENG1, and when external vibration excitation is carried out, the relative displacement of the mass block 2 on a reference surface can drive the TENG to generate contact separation. The through hole of the moving guide rail 3 at the center of the mass block 2 ensures the stable operation of the mass block 2 in the vertical vibration direction. The shell 4 is a cylindrical closed space formed by a cylindrical hollow round tube shell, a round top plate and a round bottom plate, so that the internal devices are prevented from being disturbed by the external complex natural environment.
Fig. 2 shows a schematic structure of a spiral structure TENG1, in which the upper and lower surfaces of the spiral layer 11 in the spiral substrate of the spiral structure TENG1 are respectively adhered with a metal layer as a first electrode and a second electrode. Wherein, the first electrode and the second electrode are continuously attached on the spiral layer 11, the surface of the first electrode is attached with the agglomerate thin film 13, and forms a contact separation type TENG with the second electrode, wherein a gap exists between the second electrode and the polymer thin film 13.
Fig. 3 shows the working principle of the spiral structure TENG1, and under the action of vibration excitation, the mass block 2 drives the second electrode in the spiral structure TENG1 to form physical contact with the polymer film 13, and at this stage, due to the difference of affinity of the friction materials for charges, the two friction layers have equal amounts of charges with different numbers, as shown in part (i) of fig. 3. When the excitation is released, the two friction layers start to separate from each other creating a potential difference, charge movement will be created between the first and second electrodes at the external circuit, as shown in part (ii) of fig. 3. Its charge transfer continues until the maximum separation position, as shown in part (iii) of fig. 3. When the two friction layers again tend to contact, the potential difference gradually decreases to zero, at which time the charge flows back, as shown in part (iv) of fig. 3. According to the contact separation under the periodic cycle, TENG generates an alternating current pulse signal to output electric energy to the outside.
Fig. 4 is a schematic diagram of an energy management circuit of a self-driven system, in which output ports (i.e., a first electrode and a second electrode) of a triboelectric vibration energy collecting device are connected to the energy management circuit shown in fig. 4, and the collected ac electric energy is converted into a dc form by a rectifier bridge module, and the energy storage capacitor C is charged. The stored electric energy is transmitted to the voltage stabilizer U 0 And outputting stable direct-current voltage from the port c, thereby meeting the energy supply of the micro-power consumption sensing unit under various energy supply demands.
The selection of the rectifier bridge includes, but is not limited to, the following types: rectifier modules such as KBPC1010, 4GBJ1006, GBP208, BR1010, GBU610, GBJ1010, RS607, KBU810 and DB 107. The selection of the storage capacitor includes, but is not limited to, the following capacitance values: 10. Mu.F, 22. Mu.F, 33. Mu.F, 47. Mu.F, 100. Mu.F, 220. Mu.F, 330. Mu.F, 470. Mu.F, 1000. Mu.F, etc. The choice of voltage regulator includes, but is not limited to, the following models: l7805, L7806, L7808, L7809, L7810, L7812, L7815, and the like.
The embodiment also provides a preparation method of each module, firstly, a preparation method of the triboelectric vibration energy collecting device is described;
the preparation of the triboelectric vibration energy collecting device mainly comprises a spiral structure TENG and a power assisting component. The skeleton of spiral construction TENG adopts organic glass material, utilizes the laser cutting machine to cut into the thickness to 1 mm's organic glass board and is 8cm in external diameter, and the opening ring that internal diameter is 6cm, and the adjacent adhesion of its open end of 6 same rings constitutes three-dimensional spiral structure, remains 2mm clearance between spiral layer and the layer. Thereafter, a metal layer having a thickness of 50 μm was washed with alcohol and pure water, and then put into an oven for drying, and sufficiently adhered to the upper and lower surfaces of the spiral layer by an adhesive, thereby forming first and second electrodes. Finally, a polymer film having a thickness of 500 μm was attached to the upper surface of the first electrode by a conductive adhesive after washing and drying.
The mass block of the auxiliary component adopts a solid weight with the diameter of 6cm, and a through hole with the diameter of 2cm is cut at the center of the weight. Secondly, the manufacturing of the motion guide rail is to cut an acrylic round bar with the diameter of 2cm into a cylinder with the height of 8 cm. The lower surface of the weight is adhered to the top end of the spiral structure TENG1, and the lower surface of the weight and the top end of the spiral structure TENG1 are aligned in the vertical direction. The cylinder passes through the through hole in the center of the weight and serves as a moving guide rail in the vertical direction of the weight.
Correspondingly, the design of the energy management circuit mainly comprises a rectifier bridge module, an energy storage capacitor and a voltage stabilizer module. The rectifier bridge module is used for continuously charging the energy storage capacitor after converting the periodic alternating current electric energy output by the TENG into direct current electric energy, and the stored electric energy outputs stable direct current voltage through the voltage stabilizer module.
Correspondingly, the shell is of a dustproof and waterproof airtight structure, and the friction electric vibration energy collecting device and the energy management circuit are packaged. The shell is made of opaque materials, and the packaging grade meets engineering technical requirements of dust prevention, water prevention, shock prevention, ageing resistance and the like.
Thus, the construction of the vibration energy self-driving system is completed, so that the system can efficiently collect vibration energy of the overhead transmission line through the spiral friction electric type vibration energy collecting device and convert the vibration energy into electric energy, and the electric energy is output through the energy management circuit and used for the micro-power consumption sensing unit, so that the energy supply requirement of the distributed sensing unit of the overhead transmission line is met.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention, which is intended to be covered by the claims of the present invention.
Claims (6)
1. A triboelectric overhead transmission line wind-induced vibration energy collecting device which is characterized in that: the device comprises a spiral structure TENG, a mass block and a moving guide rail; the mass block is connected with the spiral structure TENG; and a through hole is formed in the center of the mass block, and a moving guide rail is inserted from the through hole and penetrates through the through hole of the spiral structure TENG and is used for assisting the mass block to move in the vertical direction.
2. The collection device of claim 1, wherein: the spiral structure TENG comprises a spiral substrate, a first electrode, a second electrode and a film; the first electrode and the second electrode are respectively attached to the upper surface and the lower surface of the spiral layer of the spiral substrate; the film is attached to the surface of the first electrode, and a gap exists between the film and the second electrode.
3. The collection device of claim 2, wherein: the preparation method of the spiral matrix comprises the following steps: firstly, cutting organic glass into a plurality of circular rings, wherein the circular rings are provided with openings; sequentially connecting the opening ends of the circular rings to form a three-dimensional spiral structure, so as to obtain a spiral matrix; gaps are arranged between the spiral layers of the spiral matrix for attaching the electrode and the film.
4. The utility model provides an overhead transmission line wind induced vibration energy self-driving system which characterized in that: the system comprising an energy management circuit, a housing, and a collection device according to any one of claims 1 to 3; the energy management circuit is connected with the spiral structure TENG in the collecting device and is used for conveying electric energy generated by the spiral structure TENG to a circuit micro-power consumption load; the housing is for integral packaging of the collection device and the energy management circuit.
5. The self-driving system according to claim 4, wherein: the energy management circuit comprises a rectifier bridge, an energy storage capacitor and a voltage stabilizer; the rectifier bridge is used for converting alternating current electric energy generated by the spiral structure TENG into direct current electric energy; the energy storage capacitor is used for storing direct-current electric energy; the voltage stabilizer is used for stably outputting direct-current electric energy to a micro-power consumption load.
6. The self-driving system according to claim 4, wherein: the shell comprises a top plate, a bottom plate and a hollow cylinder; the top plate and the bottom plate are respectively arranged at two ends of the hollow cylinder; and a spiral structure TENG is arranged on the bottom plate.
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| CN202310909553.8A CN116846247A (en) | 2023-07-24 | 2023-07-24 | Friction electric overhead transmission line wind-induced vibration energy collecting device and self-driving system thereof |
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