CN114629379A - Energy collecting system of high-voltage transmission line - Google Patents
Energy collecting system of high-voltage transmission line Download PDFInfo
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- CN114629379A CN114629379A CN202210508301.XA CN202210508301A CN114629379A CN 114629379 A CN114629379 A CN 114629379A CN 202210508301 A CN202210508301 A CN 202210508301A CN 114629379 A CN114629379 A CN 114629379A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 59
- 239000004020 conductor Substances 0.000 claims abstract description 32
- 238000004146 energy storage Methods 0.000 claims abstract description 19
- 239000012212 insulator Substances 0.000 claims description 19
- 239000002131 composite material Substances 0.000 claims description 13
- 125000006850 spacer group Chemical group 0.000 claims description 12
- 230000000087 stabilizing effect Effects 0.000 claims description 11
- 238000003306 harvesting Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 9
- 230000009471 action Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012806 monitoring device Methods 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000002889 sympathetic effect Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/186—Vibration harvesters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses an energy collection system of a high-voltage transmission line, which relates to the technical field of energy storage of power equipment, and the device comprises the energy collection system of the high-voltage transmission line, and the energy collection system comprises: the resonance device is arranged on the high-voltage transmission conductor and used for receiving and amplifying the collected noise signals; the piezoelectric transducer is arranged at the high-voltage transmission conductor, receives the noise signal amplified by the resonance device and converts the noise signal into electric energy; and the energy storage device stores the electric energy converted by the piezoelectric transducer. In the energy collecting system, noise generated by corona generated in the process of transmitting the electric wires through the high-voltage transmission is utilized, vibration energy brought by sound is converted into electric energy through the resonator and transmitted to the storage device, so that the high-voltage transmission electric wires can store more electric energy, and the electric energy loss in the transmitting process is compensated to a certain extent.
Description
Technical Field
The invention relates to the technical field of power equipment energy storage, in particular to an energy collecting system of a high-voltage power transmission line.
Background
In the process of gradually developing electric power systems toward large capacity, high voltage and intellectualization, improvement in transmission efficiency is always a major task. In the related art, the high-voltage transmission conductive line has large electric energy loss when running in the power transmission process.
In the related art, a passive self-energy supply technology can be used for taking electricity and supplementing electric energy through a power equipment body or the environment so as to reduce electric energy loss, and the current mainstream application is a low-power or micro-power energy taking method such as electric field and magnetic field energy taking. The method of the type has the advantages of simple structure, high reliability, convenience in application and the like, and becomes the most widely used passive self-power supply technology at present, but the energy source is an alternating electric field and a magnetic field, so that the self-power supply requirement of the sensor under the application of a high-voltage direct-current scene cannot be met. In particular, when the line transmission capacity is large, the power loss due to corona discharge also becomes correspondingly large, causing a loss to the grid.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to take remedial measures for energy loss in the transmission process of a high-voltage transmission line.
In order to achieve the above object, the technical solution adopted by the present invention is to provide an energy collection system for a high voltage transmission line, comprising:
the resonance device is arranged on the high-voltage transmission conductor to receive and amplify the collected noise signals;
the piezoelectric transducer is arranged at the high-voltage transmission conductor, receives the noise signal amplified by the resonance device and converts the noise signal into electric energy;
and the energy storage device stores the electric energy converted by the piezoelectric transducer.
In some embodiments, the energy harvesting system comprises: the two piezoelectric transducers are arranged close to the two towers, and 5 resonance devices are arranged between every two piezoelectric transducers at intervals.
In some embodiments, the piezoelectric transducer is disposed on an insulator of a tower.
In some embodiments, at least one shed is disposed on the insulator, and the piezoelectric transducer includes at least one piezoelectric complex diaphragm disposed on the shed.
In some embodiments, three sheds are disposed on the insulator at intervals, and the piezoelectric transducer includes at least 4 piezoelectric complex diaphragms disposed on each shed.
In some embodiments, the piezoelectric complex diaphragm is in a patch shape, and the piezoelectric complex diaphragm is connected to the energy storage device through an enameled wire.
In some embodiments, the energy storage device comprises:
the voltage stabilizing module is connected with the piezoelectric transducer and used for receiving the electric energy converted by the piezoelectric transducer and converting the electric energy into stable voltage;
and the storage battery pack is connected with the voltage stabilizing module and is used for receiving the stable voltage converted by the voltage stabilizing module.
In some embodiments, the resonance device is provided between a plurality of split conductors of the high voltage power conductor.
In some embodiments, the resonance device is disposed on a split spacer between a plurality of the split conductors.
In some embodiments, the resonance device is a helmholtz resonator.
Compared with the prior art, the invention has the advantages that:
(1) in the energy collection system, noise generated by corona phenomenon generated in the process of transmitting the electric wires through the high voltage is utilized, and vibration energy brought by sound is converted into electric energy by the resonator and transmitted to the storage device, so that the high voltage transmission electric wires can store more electric energy, and the electric energy loss in the transmission process is compensated to a certain extent.
(2) According to the invention, the multi-stage resonator is arranged in the split conductor of the high-voltage transmission conductor, so that sound is amplified in multiple stages and then is transmitted to the piezoelectric transducer, and the efficiency of converting electric energy is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an energy collection system of a high-voltage transmission line according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a partial structure of a piezoelectric transducer of an energy collection system in an embodiment of the invention;
FIG. 3 is a schematic structural view of an embodiment of the present invention showing the installation of a split spacer on four split conductors;
fig. 4 is a schematic structural view of a split spacer in an installation state on six split conductors according to an embodiment of the present invention.
In the figure: 1. A piezoelectric transducer; 11. a piezoelectric composite vibrating diaphragm; 2. a high voltage power transmission conductor; 21. splitting the conductor; 22. splitting a spacer; 221. a hollow structure; 3. a resonance device; 4. an energy storage device; 5. a power transmission cable; 6. a pole tower; 61. an insulator; 611. an umbrella skirt.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. As shown in fig. 1 and 2, the present application provides an energy harvesting system of a high voltage transmission line, comprising: at least one resonance device 3, at least one piezoelectric transducer 1 and an energy storage device 4; wherein the content of the first and second substances,
at least one resonance device 3 provided on the high-voltage power transmission conductor 2; at least one piezoelectric transducer 1, which is arranged at the high-voltage transmission conductor 2, wherein the piezoelectric transducer 1 is used for receiving the sound energy transmitted by the resonance device 3 and converting the sound energy into electric energy; and the energy storage device 4 is connected with the piezoelectric transducer 1 through a power transmission cable 5.
It will be appreciated that the power transmission cable 5 employs a YJLV copper core cable, nominally 24mm in cross-section 2, for conducting induced current. The cable is led out from a hardware fitting at the low-voltage end of the insulator, extends to one of the steel feet along the cross arm of the tower and then is pulled to the energy storage device from the ground.
Specifically, the resonance device 3 selects a helmholtz resonator, which is a cylindrical cavity type resonator, for amplifying corona noise. Preferably, the neck of the Helmholtz resonator is 1cm long, the diameter of the Helmholtz resonator is 20cm, the depth of the resonance cavity is 30cm, the input sound wave frequency is 50-1200 Hz, the input sound pressure is 120dB, and the acoustic resistance is 10 omega.
It is worth to be noted that, as shown in fig. 3 and 4, the high-voltage power transmission conductor 2 includes a plurality of split conductors 21 arranged at intervals, and the resonance device 3 is disposed between the plurality of split conductors 21 to collect noise generated by corona phenomenon.
In particular, the high voltage transmission conductor 2 further comprises: the split spacing rod 22 is arranged between the split conductors 21, the split spacing rod 22 is of a hollow structure 221, the resonance device 3 is arranged at the center of the hollow structure 221, and a connecting line between cavities on two sides of the resonance device 3 is perpendicular to the split spacing rod 22.
Further, as shown in fig. 3, the high voltage power transmission conductor 2 comprises four of said split conductors 21, said split spacers 22 being square-shaped. Four fixing posts are provided in the split spacers 22 to fix the resonance device 3 in the center of the hollow structure 221.
In another embodiment, as shown in fig. 4, the high voltage power transmission conductor 2 comprises six of said split conductors 21, said split spacers 22 having a hexagonal shape. Six fixing posts are provided in the split spacer 22 to fix the resonance device 3 in the center of the hollow structure 221.
It is worth mentioning that the energy harvesting system comprises: at least two piezoelectric transducer 1, per two the interval is equipped with 5 between the piezoelectric transducer 1 resonance device 3, every resonance device 3's sympathetic response direction is unanimous. All resonance devices 3's helmholtz resonator's resonance chamber direction is unanimous, forms helmholtz resonator array for carry out multistage enlargies to corona noise, and finally export for piezoelectric transducer 1 by the helmholtz resonator in the splitting conductor spacer that is closest to shaft tower 6 and receive.
Further, the piezoelectric transducer 1 is arranged on an insulator 61 of the tower 6, the insulator 61 is provided with at least one shed 611, the piezoelectric transducer 1 includes at least one piezoelectric complex dielectric diaphragm 11, and the piezoelectric complex dielectric diaphragm 11 is arranged on the shed 611.
It should be noted that three shed skirts 611 are arranged on the insulator 61 at intervals, and each shed skirt 611 is provided with at least 4 piezoelectric composite diaphragms 11.
It can be understood that, generally, 4 to 8 piezoelectric composite diaphragms 11 are uniformly attached to each umbrella skirt 611, and the number of the piezoelectric composite diaphragms 11 is determined according to the size of the umbrella skirt 611. The outgoing line of each piezoelectric complex diaphragm 11 is connected to a short bus along the central axis of the shed 611, the short bus and the outgoing line of the piezoelectric complex diaphragm 11 are made of the same material, play a role in current collection, and then are connected to the power transmission cable 5 at the fitting of the insulator 61.
Specifically, the piezoelectric complex diaphragm 11 is used to convert acoustic energy into electric energy. The piezoelectric composite dielectric diaphragm 11 is in a patch shape, the output voltage of a single piece is 11.4-13.6V, the size is 75mm multiplied by 20mm, the thickness is 2mm, and a layer of glue is smeared on the edge of the piezoelectric composite dielectric diaphragm to be conveniently fixed on the umbrella skirt 611 of the composite insulator 61. One side of the piezoelectric complex diaphragm 11 is connected to the power transmission cable 5 through an enameled wire and used for transmitting the converted current.
Generally, the lines between two adjacent towers 6 generally have 3-5 split spacers 22, and helmholtz resonators are installed in each split spacer 22, so that when corona occurs near a wire of a first base tower, the discharge noise can be transmitted to a second base tower through five-stage amplification at most. And then all the piezoelectric complex dielectric diaphragms 11 arranged on the insulators 61 of the adjacent second tower 6 induce current, and the current is gathered and then sent to the energy storage device 4 on the ground through the power transmission cable 5 to be stored.
In particular, the transmission cable 5 uses a YJLV copper core cable, with a nominal section of 24mm2, for conducting induced current. The power transmission cable 5 is led out from the hardware fitting at the low-voltage end of the insulator 61, extends to one of the steel feet along the cross arm of the tower 6, and is then pulled to the energy storage device 4 from the ground.
In some embodiments, the energy storage device 4 includes a voltage stabilizing module and a storage battery pack, the voltage stabilizing module adopts an LM2596 main control chip, the output voltage is 12V, and the voltage stabilizing module is connected to the cable. The storage battery pack is formed by connecting 8 sections of nickel-metal hydride storage batteries in series, the rated voltage of a single battery is 12V, and the maximum capacity is 200 Ah. The storage battery pack is connected with the voltage stabilizing module and used for receiving stable electric energy and storing the stable electric energy in the battery pack in a chemical energy form.
The principle of the energy collection device in this application is: when corona phenomenon is generated on the high-voltage transmission conductor 2, a noise signal is collected by a Helmholtz resonator closest to corona, the noise signal is amplified through a self cavity structure, and the amplified sound wave is transmitted out from an opening on the other side. The sound wave will be transmitted to the next helmholtz resonator along the line direction and amplified for a second time. This process proceeds until the helmholtz resonator close to the insulator 61 is approached, thereby realizing multistage amplification of the sound wave. The sound wave emitted from the helmholtz resonator close to the insulator 61 deforms the piezoelectric complex dielectric diaphragm 11 attached to the surface of the umbrella skirt 611 of the insulator 61, and induces a current in the piezoelectric complex dielectric diaphragm according to the piezoelectric effect. Each shed of the insulator 61 is adhered with a plurality of piezoelectric composite vibrating diaphragms, and currents induced by the diaphragms are converged together through an enameled wire and are conveyed into a cable to be gathered. The power transmission cable 5 transmits current to the energy storage device 4 on the ground, and charges the storage battery after the voltage is stabilized by the voltage stabilizing module in the energy storage device, so that electric energy is converted into chemical energy to be stored. The electrical energy in the battery pack can be used to charge a nearby small electrical facility or an online monitoring device on the tower 6.
In summary, in the energy collection system of the invention, noise generated by corona phenomenon generated in the process of transmitting electricity to the high-voltage transmission line is utilized, and vibration energy brought by sound is converted into electric energy by the resonator and transmitted to the storage device, so that the high-voltage transmission line can store more electric energy, thereby compensating for electric energy loss in the transmission process to a certain extent. According to the invention, the multi-stage resonator is arranged in the split conductor of the high-voltage transmission conductor, so that sound is amplified in multiple stages and then is transmitted to the piezoelectric transducer, and the efficiency of converting electric energy is improved. The multi-split power transmission line corona energy storage device is simple and convenient to install, the structural characteristics of a multi-split line are effectively utilized, the multi-stage amplification of energy is realized, the energy conversion efficiency is high, the corona energy can be stored, and the electric energy loss of a power transmission line is reduced.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An energy harvesting system for a high voltage transmission line, comprising:
at least one resonance device (3) for being arranged on the high-voltage transmission conductor (2) to receive and amplify the collected noise signals;
at least one piezoelectric transducer (1) arranged on the high-voltage transmission conductor (2) and used for receiving the noise signal amplified by the resonance device (3) and converting the noise signal into electric energy;
an energy storage device (4) which stores the electrical energy converted by the piezoelectric transducer (1).
2. The energy harvesting system of a high voltage transmission line according to claim 1, characterized in that the energy harvesting system comprises: the piezoelectric transducers (1) are arranged close to the two towers (6), and 5 resonance devices (3) are arranged between every two piezoelectric transducers (1) at intervals.
3. The energy collection system of the high voltage transmission line according to claim 1, characterized in that the piezoelectric transducer (1) is arranged on an insulator (61) of a tower (6).
4. The energy collection system of the high-tension transmission line according to claim 3, wherein at least one shed (611) is provided on the insulator (61), the piezoelectric transducer (1) comprises at least one piezoelectric composite diaphragm (11), and the piezoelectric composite diaphragm (11) is provided on the shed (611).
5. The energy harvesting system of high tension transmission line of claim 4, characterized in that there are three sheds (611) on the insulator (61) at intervals, and the piezoelectric transducer (1) comprises at least 4 piezoelectric composite diaphragms (11) on each shed (611).
6. The energy collection system of the high-voltage transmission line according to claim 4, wherein the piezoelectric composite diaphragm (11) is in a patch shape, and the piezoelectric composite diaphragm (11) is connected to the energy storage device (4) through an enameled wire.
7. The energy collection system of the high voltage transmission line according to claim 1, characterized in that the energy storage device (4) comprises:
the voltage stabilizing module is connected with the piezoelectric transducer (1) and is used for receiving the electric energy converted by the piezoelectric transducer (1) and converting the electric energy into stable voltage;
and the storage battery pack is connected with the voltage stabilizing module and is used for receiving the stable voltage converted by the voltage stabilizing module.
8. The energy harvesting system of a high voltage transmission line according to claim 1, characterized in that the resonance device (3) is arranged between a plurality of split conductors (21) of the high voltage transmission line (2).
9. The energy collection system of the high voltage transmission line according to claim 8, characterized in that the resonance device (3) is arranged on a split spacer (22) between a plurality of the split conductors (21).
10. The energy harvesting system of a high voltage transmission line according to claim 1, characterized in that the resonance device (3) is a helmholtz resonator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210508301.XA CN114629379B (en) | 2022-05-11 | 2022-05-11 | Energy collecting system of high-voltage transmission line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210508301.XA CN114629379B (en) | 2022-05-11 | 2022-05-11 | Energy collecting system of high-voltage transmission line |
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| CN114629379A true CN114629379A (en) | 2022-06-14 |
| CN114629379B CN114629379B (en) | 2022-09-16 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529686A (en) * | 2013-10-23 | 2014-01-22 | 沈娟燕 | Two-stage resonant noise clock |
| US20160209454A1 (en) * | 2015-01-19 | 2016-07-21 | Patrick McCammon | Wireless Power Line Sensor |
| JP2018073997A (en) * | 2016-10-28 | 2018-05-10 | 帝人株式会社 | Braided string piezoelectric element and device using same |
| CN108548601A (en) * | 2018-03-20 | 2018-09-18 | 河北工业大学 | Bullet train noise is surveyed from driving power generation and is made an uproar and data transmission method and device |
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- 2022-05-11 CN CN202210508301.XA patent/CN114629379B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529686A (en) * | 2013-10-23 | 2014-01-22 | 沈娟燕 | Two-stage resonant noise clock |
| US20160209454A1 (en) * | 2015-01-19 | 2016-07-21 | Patrick McCammon | Wireless Power Line Sensor |
| JP2018073997A (en) * | 2016-10-28 | 2018-05-10 | 帝人株式会社 | Braided string piezoelectric element and device using same |
| CN108548601A (en) * | 2018-03-20 | 2018-09-18 | 河北工业大学 | Bullet train noise is surveyed from driving power generation and is made an uproar and data transmission method and device |
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| CN114629379B (en) | 2022-09-16 |
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