CN107069920B - Power transmission line energy taking device based on piezoelectric material and energy taking method thereof - Google Patents
Power transmission line energy taking device based on piezoelectric material and energy taking method thereof Download PDFInfo
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- CN107069920B CN107069920B CN201710456720.2A CN201710456720A CN107069920B CN 107069920 B CN107069920 B CN 107069920B CN 201710456720 A CN201710456720 A CN 201710456720A CN 107069920 B CN107069920 B CN 107069920B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 26
- 239000000463 material Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title abstract description 22
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 30
- 239000000919 ceramic Substances 0.000 claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 22
- 239000012212 insulator Substances 0.000 claims description 11
- 239000000725 suspension Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims 1
- 238000007599 discharging Methods 0.000 abstract description 14
- 238000012544 monitoring process Methods 0.000 abstract description 10
- 238000001914 filtration Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 7
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 3
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000012806 monitoring device Methods 0.000 description 7
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 3
- 229910052790 beryllium Inorganic materials 0.000 description 3
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 3
- 239000010974 bronze Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Classifications
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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
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a power transmission line energy taking device based on piezoelectric materials, which comprises a cylinder body and a shielding cover wrapped outside the cylinder body, wherein a bowl head hanging plate is connected above the cylinder body, and a cantilever beam base body is arranged below the cylinder body. The problem of the energy waste and the device power supply singleness that current wire exists in the vibration process is solved. The invention also discloses an energy taking method by using the piezoelectric material-based power transmission line energy taking device, which comprises the steps of firstly generating electric energy by sensing the vibration of a lead wire contacted with the piezoelectric ceramic through piezoelectric ceramic, then rectifying, filtering and stabilizing the electric energy by using an electric energy processing module, and monitoring whether the charging current meets the requirement by using a charging and discharging protection module, thereby controlling the charging and discharging of the lithium battery and monitoring whether the charging current meets the requirement.
Description
Technical Field
The invention belongs to the field of state monitoring of power transmission and transformation equipment, and relates to a power transmission line energy taking device based on a piezoelectric material. The invention also relates to an energy obtaining method using the energy obtaining device.
Background
The overhead power transmission conductor is easy to generate breeze vibration under the excitation action of wild wind, the breeze vibration time of the conductor in one year accounts for about 30% -50% of the whole year according to incomplete statistics, and the vibration can last for several days sometimes under the conditions of open areas and uniform and stable wind speed. In an actual field, a large amount of mechanical energy generated by the vibration of the lead is directly consumed in the form of the vibration of the lead, and is not effectively utilized, so that the energy is wasted.
Meanwhile, in order to master the running condition of the line in real time, various monitoring devices are installed on the power transmission line, the monitoring devices can normally work only by being supported by electric energy, and the installation position of the monitoring devices specially increases the difficulty of replacement and maintenance of a power supply of the device, so that the power supply of the device is single in form.
Disclosure of Invention
The invention aims to provide a power transmission line energy taking device based on piezoelectric materials, and solves the problems of energy waste and single power supply of the device in the vibration process of the conventional lead.
The technical scheme adopted by the invention is that the power transmission line energy taking device based on the piezoelectric material is characterized by comprising a cylinder body and a shielding cover wrapped outside the cylinder body, wherein a bowl head hanging plate is connected to the upper part of the cylinder body, and a cantilever beam base body is arranged below the cylinder body.
The present invention is also characterized in that,
the lower part of the cantilever beam base body is provided with a retaining ring, and the cantilever beam base body is provided with a piezoelectric ceramic piece.
The piezoelectric ceramic pieces are adhered to the upper surface and the lower surface of the cantilever beam base body.
The outside of cylinder body is provided with the power supply interface, and the power supply interface is located the outside of charge-discharge protection module.
The cylinder body is divided into 3 parts, namely a lithium battery, a charge-discharge protection module and an electric energy processing module from top to bottom in sequence.
The charging and discharging protection module comprises an overcharge protection circuit and an overdischarge protection circuit, and the overcharge protection circuit and the overdischarge protection circuit of the two circuits are respectively connected with the lithium battery through power lines.
The overcharge protection circuit is connected with the electric energy processing device through a power line, and the electric energy processing device is connected with the piezoelectric ceramic piece through the power line.
The socket hanging plate is connected with an insulator string in a power transmission line, when the socket hanging plate is connected with the insulator string, the socket hanging plate is hung below the insulator string, the cantilever beam base body is connected with a lead through a retaining ring at the lower end, the socket hanging plate and the cantilever beam base body are in tight contact, a fixing ring is arranged at the lower end of the cylinder body, and the fixing ring is connected with a suspension wire clamp after a bolt is inserted into the fixing ring.
The invention also aims to provide an energy taking method utilizing the power transmission line energy taking device.
Another technical scheme of the invention is an energy taking method using a piezoelectric material-based power transmission line energy taking device, which is characterized by comprising the following steps:
leading out electric energy generated by the piezoelectric ceramics in the step 1 through an electrode, and enabling the electric energy to enter an electric energy processing module through a power line, wherein the electric energy processing module utilizes a hardware circuit to rectify, filter and stabilize the electric energy flowing in so as to enable the charging electric energy to become stable direct current;
and 3, monitoring whether the charging current meets the requirement or not by using the charging and discharging protection module so as to control the charging and discharging of the lithium battery, wherein the specific method comprises the following steps: the charging and discharging protection module collects and analyzes the charging electric energy after rectification, filtering and voltage stabilization in real time, when the current exceeds the set upper limit and lower limit, an overcharge protection circuit in the charging and discharging protection module works to stop charging the lithium battery, and when the charging current is recovered to the normal set interval, the charging is continued;
and 4, monitoring whether the charging current meets the requirement, wherein the specific method comprises the following steps: the lithium battery supplies power to the outside through the power supply interface after passing through the overdischarge protection circuit in the charge-discharge protection module, and the charge-discharge protection module can collect and analyze the discharge current of the lithium battery in real time, and when the discharge current exceeds the set upper and lower limits, the lithium battery is damaged for preventing overdischarge, and at the moment, the overdischarge protection circuit starts to work, and when the discharge current is recovered to the normal set value, the device continues to supply power to the outside.
The present invention is also characterized in that,
the filtering in the step 2 adopts a common second-order low-pass filter circuit, and the monitoring chip adopts an STM32F103 series single chip microcomputer.
The invention has the advantages that the device is arranged between the insulator string of the power transmission line and the suspension clamp, when the conductor vibrates slightly, the piezoelectric material in the energy taking device deforms to generate voltage, and a stable and reliable electric energy source can be provided for the online monitoring device. The vibration energy of the wire is converted into electric energy and continuously provided for the monitoring device, so that the energy can be recycled, and a new idea is provided for selecting a power supply of the on-line monitoring device.
Drawings
Fig. 1 is a schematic structural diagram of a power transmission line energy taking device based on piezoelectric materials;
fig. 2 is a schematic structural diagram of a module of the piezoelectric material-based power transmission line energy taking device of the invention;
fig. 3 is a schematic diagram of the installation of the piezoelectric material-based power transmission line energy taking device of the invention;
fig. 4 is a flow chart of the piezoelectric material-based power transmission line energy taking method of the invention.
In the figure, 1, a cylinder body, 2, a piezoelectric ceramic piece, 3, a cantilever beam base body, 4, a retaining ring, 5, a bowl head hanging plate, 6, a shielding cover, 7, a charge and discharge protection module, 8, an electric energy processing module, 9, a lithium battery, 10, a power supply interface, 11, an insulator string, 12, a suspension wire clamp, 13, a lead, 14, a fixing ring, 15, a power line, 16, an over-discharge protection circuit and 17, an over-charge protection circuit are arranged.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
An energy taking device of a power transmission line based on piezoelectric materials is shown in figure 1 and comprises a cylinder body 1 and a shielding cover 6 wrapped outside the cylinder body 1, wherein a bowl head hanging plate 5 is connected above the cylinder body 1, a cantilever beam base body 3 is arranged below the cylinder body 1,
a retaining ring 4 is arranged below the cantilever beam base body 3, a piezoelectric ceramic part 2 is arranged on the cantilever beam base body 3,
the cylinder body 1 is divided into 3 parts, which are a lithium battery 9, a charge-discharge protection module 7 and an electric energy processing module 8 from top to bottom in sequence,
the outer side of the cylinder body 1 is provided with a power supply interface 10, the power supply interface 10 is positioned outside the charge-discharge protection module 7,
the charging and discharging protection module 7, as shown in fig. 2, includes an overcharge protection circuit 17 and an overdischarge protection circuit 16, the two overcharge protection circuits 17 and the overdischarge protection circuit 16 are respectively connected with the lithium battery 9 through power lines,
the overcharge protection circuit 17 is connected with the electric energy processing device 8 through a power line, and the electric energy processing device 8 is connected with the piezoelectric ceramic piece 8 through the power line.
As shown in fig. 3, the socket hanging plate 5 is connected with an insulator string 11 in the power transmission line, when in connection, the socket hanging plate 5 is hung below the insulator string 11,
the cantilever beam substrate 3 is connected with the lead 13 through the retaining ring 4 at the lower end, the cantilever beam substrate and the lead are in close contact, the cylinder body 1 is wrapped by the shielding cover 6, and the interference of strong electromagnetic radiation on a circuit to the work of the charge-discharge protection module 7 and the electric energy processing module 8 is avoided.
The lower end of the cylinder body 1 is provided with a fixing ring 14 which is connected with the suspension clamp after the bolt is inserted into the fixing ring, thereby further fixedly connecting the whole device with a wire.
The cantilever beam base body is made of beryllium bronze, the beryllium bronze has good comprehensive performance, and the deformation is large under the same condition, so that the strain of the piezoelectric ceramic can be improved, the power generation capacity can be improved, and meanwhile, the mechanical properties of fatigue resistance, corrosion resistance and the like of the beryllium bronze are also excellent, and the properties are very important for outdoor equipment.
The piezoelectric ceramic piece 2 is adhered to the upper surface and the lower surface of the cantilever beam base body, and multi-layer piezoelectric ceramic is adopted for power generation, so that the power generation performance of the device is effectively improved.
The specification of the piezoelectric ceramic single chip is 40 multiplied by 10 multiplied by 0.5mm, when the lead generates breeze vibration, the voltage generated by the piezoelectric ceramic 2 by utilizing the positive piezoelectric effect reaches 5V, the charging current is 30-50mA, and the charging power of the lithium battery can be effectively met.
The electric energy processing module 8 is packaged in the cylinder body 1 and has the functions of rectification, filtering and voltage stabilization. The voltage generated by the piezoelectric ceramic changes with the size of the deformation, the electric energy is unstable, and the electric energy processing module 8 can process the electric energy to be relatively stable.
The charge and discharge protection module 7 is provided with an overcharge protection circuit and an overdischarge protection circuit. The charge and discharge protection module 7 can monitor the charge and discharge current of the lithium battery in real time, and can interrupt the charge and discharge process of the lithium battery when the charge and discharge current exceeds a limit value, so that the effect of protecting the lithium battery is achieved.
The working process of the device is that the power transmission line energy taking device based on the piezoelectric material is arranged between the insulator string and the suspension clamp, the cantilever beam matrix is tightly fixed with the lead by the retaining ring, when the lead generates breeze vibration, the cylinder body, the insulator string and the suspension clamp form a static whole, the lead vibrates up and down to drive the cantilever beam to generate deformation, the piezoelectric ceramic adhered on the surface of the cantilever beam generates electric charge due to the deformation, a voltage difference is formed on the surfaces of two ends of the piezoelectric ceramic, the positive polarity, the negative polarity and the amplitude of the voltage at the two ends of the piezoelectric ceramic change along with the deformation size and the direction, electric energy is led out from electrodes at the two ends and is transmitted to the electric energy processing module through a power line, a rectifying circuit, a filtering circuit and a voltage stabilizing circuit are designed in the electric energy conversion module, the voltage is converted into direct current voltage with stable direction amplitude after being rectified, filtered and stabilized, and the direct current voltage is supplied to the lithium battery for charging through the charging and discharging.
In the vibration process, the amplitude and the frequency of the wire are changed at any moment, sometimes the vibration is particularly severe in one period of time, and the vibration is particularly weak in another period of time. The voltage generated by particularly severe or weak vibration does not meet the charging requirement, and the lithium battery is easily damaged when the charging current is too large or too small, so that in consideration of the situation, the invention designs the overcharge protection circuit for protecting the lithium battery, and the charging and discharging protection module automatically interrupts the charging process when monitoring that the charging current is too large or too small until the charging current is restored to a normal level to continue charging the lithium battery.
The electric energy processed by the electric energy processing module is transmitted to the lithium battery through the power line for charging the lithium battery. Meanwhile, the charge and discharge protection module collects the discharge current of the lithium battery in real time, and the over-discharge protection circuit works when the current exceeds a limit value, so that the over-discharge phenomenon of the lithium battery is prevented. And finally, supplying power to the on-line monitoring device through the power supply interface by using the electric energy.
The method for acquiring energy by using the piezoelectric material-based power transmission line energy acquisition device is implemented according to the following steps as shown in fig. 4:
and (2) leading out the electric energy generated by the piezoelectric ceramics in the step (1) through an electrode, and enabling the electric energy to enter an electric energy processing module through a power line, wherein the electric energy processing module carries out rectification, filtering and voltage stabilization on the electric energy flowing in by using a hardware circuit, so that the charging electric energy becomes stable direct current.
And 3, monitoring whether the charging current meets the requirement or not by using the charging and discharging protection module so as to control the charging and discharging of the lithium battery, wherein the specific method comprises the following steps:
the charging and discharging protection module collects and analyzes the charging electric energy after rectification, filtering and voltage stabilization in real time, when the current exceeds the set upper and lower limits, an overcharge protection circuit in the charging and discharging protection module works to stop charging the lithium battery, and when the charging current is recovered to the normal set interval, the charging is continued.
the lithium battery supplies power to the outside through the power supply interface after passing through the over-discharge protection circuit in the charge-discharge protection module, the charge-discharge protection module can collect and analyze the discharge current of the lithium battery in real time, when the discharge current exceeds the set upper and lower limits, in order to prevent the lithium battery from being damaged by over-discharge, the over-discharge protection circuit starts to work, and when the discharge current is recovered to the normal set value, the device continues to supply power to the outside, and the monitoring chip related to the invention adopts an STM32F103 series single chip microcomputer.
The method parts, preferably written in more detail, are similar to what method is usually used for filtering, and what analysis method is not used when collecting and analyzing.
The filtering in the step 2 adopts a common second-order low-pass filter circuit which can fully meet the requirements of the device. In terms of the analysis method, the module only collects the current through the collection circuit, compares the collected current with the preset current in the program, and controls the discharge circuit by using the program to stop supplying power when the collected current exceeds the preset upper limit and lower limit.
Claims (3)
1. The utility model provides a transmission line energy taking device based on piezoelectric material, its characterized in that, includes cylinder body (1) and parcel shield cover (6) outside cylinder body (1), the top of cylinder body (1) link to each other and have bowl link plate (5), the below of cylinder body (1) be provided with cantilever beam base member (3), the below of cantilever beam base member (3) is provided with buckle (4), is provided with piezoceramics piece (2) on cantilever beam base member (3), cylinder body (1) divide into 3 parts, from last to being lithium cell (9), charge-discharge protection module (7) and electric energy processing module (8) down in proper order, charge-discharge protection module (7), including overcharge protection circuit (17) and overdischarge protection circuit (16), two circuit overcharge protection circuit (17) and overdischarge protection circuit (16) pass through the power cord with lithium cell (9) respectively and be connected, overcharge protection circuit (17) connect through power cord and electric energy processing apparatus (8), electric energy processing apparatus (8) be connected with piezoceramics spare (2) through the power cord, socket link plate (5) be connected with insulator string (11) among the transmission line, when connecting, hang socket link plate (5) in the below of insulator string (11), cantilever beam base member (3) link together through buckle (4) and wire (13) of lower extreme, and in close contact with between the two, cylinder body (1) lower extreme be provided with solid fixed ring (14) gu fixed ring insert behind the bolt be connected with the suspension clamp.
2. The piezoelectric material-based power transmission line energy taking device is characterized in that the piezoelectric ceramic pieces (2) are adhered to the upper surface and the lower surface of the cantilever beam base body.
3. The piezoelectric material-based power transmission line energy taking device is characterized in that a power supply interface (10) is arranged on the outer side of the cylinder body (1), and the power supply interface (10) is located outside the charge-discharge protection module (7).
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| CN201710456720.2A CN107069920B (en) | 2017-06-16 | 2017-06-16 | Power transmission line energy taking device based on piezoelectric material and energy taking method thereof |
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| CN201710456720.2A CN107069920B (en) | 2017-06-16 | 2017-06-16 | Power transmission line energy taking device based on piezoelectric material and energy taking method thereof |
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| CN107069920A CN107069920A (en) | 2017-08-18 |
| CN107069920B true CN107069920B (en) | 2020-09-22 |
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| CN111313755A (en) * | 2020-03-23 | 2020-06-19 | 河南理工大学 | Road noise power generation system and power generation method |
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| CN102616102A (en) * | 2012-04-12 | 2012-08-01 | 江苏大学 | System and method for recovering automobile braking energy and suspension vibration energy |
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| CN105450085A (en) * | 2015-12-17 | 2016-03-30 | 杭州电子科技大学 | Mobile power supply based on piezoelectric electromagnetic integrated power generation |
| CN106015438A (en) * | 2016-07-19 | 2016-10-12 | 西安工程大学 | Magnetorheological damper and power transmission line anti-vibration device and anti-vibration method using same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170133953A1 (en) * | 2015-11-05 | 2017-05-11 | TekCapital LLC | Low frequency dual mode energy harvesting methods, systems, and portable devices |
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Patent Citations (6)
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|---|---|---|---|---|
| CN1603155A (en) * | 2004-11-08 | 2005-04-06 | 西安交通大学 | Automobile vibrational energy piezo-electric generating method and system |
| CN201054553Y (en) * | 2007-05-29 | 2008-04-30 | 西南科技大学 | Power supply device for radio sensor network node based on piezoelectric porcelain vibration power generation |
| CN202384725U (en) * | 2011-10-18 | 2012-08-15 | 广东电网公司电力科学研究院 | Structure for preventing windage yaw flashover of power transmission line |
| CN102616102A (en) * | 2012-04-12 | 2012-08-01 | 江苏大学 | System and method for recovering automobile braking energy and suspension vibration energy |
| CN105450085A (en) * | 2015-12-17 | 2016-03-30 | 杭州电子科技大学 | Mobile power supply based on piezoelectric electromagnetic integrated power generation |
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