CN113091888A - Self-powered vibration monitoring system for power transmission line - Google Patents
Self-powered vibration monitoring system for power transmission line Download PDFInfo
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- CN113091888A CN113091888A CN202110267415.5A CN202110267415A CN113091888A CN 113091888 A CN113091888 A CN 113091888A CN 202110267415 A CN202110267415 A CN 202110267415A CN 113091888 A CN113091888 A CN 113091888A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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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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- 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
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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
- 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
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a self-powered vibration monitoring system for a power transmission line, which comprises: the self-powered measuring device comprises a self-powered module, a measuring module and a data processing and transmitting module, wherein the output end of the measuring module is connected with the input end of the data processing and transmitting module, and the self-powered module is used for supplying power to the measuring module and the data processing and transmitting module; the self-powered module comprises a vibration energy collector, a rectifying circuit and electric energy storage equipment which are sequentially connected; the measuring module comprises a sensor and a signal processing circuit of the sensor, and the data processing and transmitting module comprises an MCU controller and a transmitter; the input end of the sensor is used for collecting vibration signals of the power transmission line, the output end of the sensor is connected with the input end of the MCU controller, the output end of the MCU controller is connected with the input end of the transmitter, and the output end of the transmitter is used for outputting received signals. The invention collects energy from the vibration of the transmission line to supply power to the sensor, so that the sensing device can operate for a long time, and the safe operation of the transmission line is ensured.
Description
Technical Field
The invention belongs to the technical field of electrical engineering and instrument science, relates to the field of power transmission line vibration monitoring, and particularly relates to a self-powered vibration monitoring system for a power transmission line.
Background
Common vibration modes of the power transmission line include breeze vibration, conductor galloping and span oscillation, and abnormal vibration signals can be generated when the vibration characteristics of the power transmission line change, so that the state that the power transmission line is wound or extruded by foreign matters can be reflected, and early warning can be carried out on the hidden danger of breakage of the power transmission line.
The inspection of the power transmission line mainly depends on manual line inspection, the efficiency is low, hidden dangers are not thoroughly eliminated, effective monitoring means are lacked, and the harm of various vibrations to the safe operation of the line cannot be mastered. The main principle of the method is that the vibration condition of the power transmission line is converted into an electric signal through the sensor, then the data is processed, the fatigue degree of the power transmission line is calculated, and early warning is carried out on faults; the sensor monitoring method has the advantages that the vibration parameters of the power transmission line can be accurately measured, but the sensor is installed on the outdoor power transmission line and needs to operate for a long time, and the problems of power supply and battery replacement exist. The existing power supply modes comprise a solar battery, a high-voltage mutual inductance energy obtaining device, a lithium battery and the like, and the problems of large weather influence, instability and limited electric energy storage capacity exist respectively.
In summary, it is highly desirable to design a vibration monitoring system with a better power supply mode for the power transmission line.
Disclosure of Invention
The invention aims to provide a self-powered vibration monitoring system for a power transmission line, so as to solve one or more of the technical problems. The self-powered vibration monitoring system provided by the invention collects energy from the vibration of the power transmission line by using the vibration energy collecting technology to supply power to the sensor, so that the sensing device can run for a long time, the safe running of the power transmission line is ensured, and partial or all defects existing in the existing power supply mode can be overcome.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention discloses a self-powered vibration monitoring system for a power transmission line, which comprises: the device comprises a self-energy supply module, a measuring module and a data processing and transmitting module, wherein the output end of the measuring module is connected with the input end of the data processing and transmitting module, and the self-energy supply module is used for supplying power to the measuring module and the data processing and transmitting module;
the self-powered module comprises a vibration energy collector, a rectifying circuit and electric energy storage equipment which are sequentially connected; the measuring module comprises a sensor and a signal processing circuit of the sensor, and the data processing and transmitting module comprises an MCU controller and a transmitter; the input end of the sensor is used for collecting vibration signals of the power transmission line, the output end of the sensor is connected with the input end of the MCU controller, the output end of the MCU controller is connected with the input end of the transmitter, and the output end of the transmitter is used for outputting received signals.
The vibration energy collector is further improved in that the vibration energy collector is an electrostatic type, piezoelectric type, electromagnetic type or triboelectric type vibration energy collector.
A further development of the invention is that the electrical energy storage device comprises a supercapacitor and a battery; the input end of the super capacitor is connected with the output end of the rectifying circuit, and the output end of the super capacitor is connected with the battery.
A further development of the invention is that the electrical energy storage device further comprises: and the boosting circuit is arranged between the rectifying circuit and the super capacitor.
A further development of the invention is that the electrical energy storage device further comprises: the power management module comprises one or more of an energy indicating circuit, a charging control circuit, a booster circuit, a voltage stabilizing output circuit and a battery overvoltage protection circuit.
The invention is further improved in that the sensor of the measuring module can at least measure the acceleration, frequency and displacement state information of the vibration of the power transmission line.
The invention is further improved in that the signal processing circuit of the measuring module comprises an amplifying circuit and a characteristic value extracting module, and is used for extracting the characteristics of the received data.
The further improvement of the invention is that the MCU controller is preset with a threshold value, and when the received vibration characteristic value exceeds the threshold value, the MCU controller controls the transmitter to send alarm information.
The invention is further improved in that the transmitter transmits the vibration signal characteristic value.
A further improvement of the present invention is that the data processing transmission module further comprises: and the receiver is used for receiving the signal sent by the transmitter.
Compared with the prior art, the invention has the following beneficial effects:
the self-powered vibration monitoring system provided by the invention has the advantages that the vibration energy is utilized locally and stably by the vibration energy collector in the technology of collecting energy from the vibration of the power transmission line in consideration of the fact that the power transmission line is in a vibration state for a long time; the alternating current generated by the vibration energy collector is converted into direct current after passing through the rectifying circuit, and the direct current supplies power to the subsequent modules through the electric energy storage equipment; the power supply to the measuring module and the data processing and transmitting module is realized under different environmental conditions, and the sensor is suitable for a sensor which works for a long time in a remote environment. The self-powered vibration monitoring system based on the core vibration energy acquisition technology has the advantages of simple structure, good stability and low battery replacement frequency, and can improve the reliability, safety and economic benefit of the operation of the power transmission line.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below; it is obvious that the drawings in the following description are some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic block diagram of a self-powered vibration monitoring system for a power transmission line according to an embodiment of the present invention;
in the figure, the position of the upper end of the main shaft,
1. a self-powered module; 101. a vibration energy collector; 102. a rectifying circuit; 103. a super capacitor; 104. a power management module; 105. a battery;
2. a measurement module;
3. a data processing and transmitting module; 301. an MCU controller; 302. a transmitter; 303. a receiver.
Detailed Description
In order to make the purpose, technical effect and technical solution of the embodiments of the present invention clearer, the following clearly and completely describes the technical solution of the embodiments of the present invention with reference to the drawings in the embodiments of the present invention; it is to be understood that the described embodiments are only some of the embodiments of the present invention. Other embodiments, which can be derived by one of ordinary skill in the art from the disclosed embodiments without inventive faculty, are intended to be within the scope of the invention.
Referring to fig. 1, a self-powered vibration monitoring system for a power transmission line according to an embodiment of the present invention includes: the device comprises a self-powered module 1, a measuring module 2 and a data processing and transmitting module 3 which are connected with each other; the self-power supply module 1 provides electric energy for the measurement module 2 and the data processing and transmission module 3; the self-powered module 1 comprises a vibration energy collector 101, a rectifying circuit 102 and electric energy storage equipment; the measuring module 2 mainly comprises a vibration sensor and a related signal processing circuit thereof; the data processing transmission module 3 includes circuits and components such as an MCU controller 301, a transmitter 302, and an external receiver 303.
The vibration energy collector 101 collects energy from the vibration of the power transmission line through a vibration energy collecting technology and converts the vibration energy into electric energy, the energy can be realized through an electrostatic method, a piezoelectric method, an electromagnetic method, a triboelectric method or a method combining various principles, and the range of the collected vibration frequency and acceleration of the energy collector is determined according to the vibration frequency and acceleration of the power transmission line.
Alternating current generated by the vibration energy collector 101 is converted into direct current after passing through the rectifying circuit 102, and the direct current is used for supplying power to a subsequent module through the electric energy storage device; the vibration energy harvester 101 can directly charge the super capacitor 103 through the rectifying circuit and then indirectly charge the battery 105 through the super capacitor 103; in the mode of directly charging the super capacitor 103, alternating current generated by the vibration energy collector 101 passes through the rectifying circuit 102 and then is converted into direct current, and the direct current can pass through the booster circuit and then is used for charging the super capacitor 103; the related circuits of the power management module 104 are composed of one or more of an energy indicating circuit, a charging control circuit, a booster circuit, a voltage stabilizing output circuit and a battery overvoltage protection circuit; the power management module 104 indicates the electric quantity of the battery 105, and determines whether the electric quantity of the battery 105 is lower than the upper limit of the threshold voltage; charging the battery 105 indirectly by the super capacitor 103 when the charge of the battery 105 is below the upper threshold voltage limit, and stopping charging the battery 105 when the charge of the battery 105 is above or equal to the upper threshold voltage limit; the MCU controller 301 judges the working state of the super capacitor 103 in the self-powered module 1, and when the power supply mode of the super capacitor 103 is normal, the super capacitor 103 is adopted to supply power to the subsequent modules; when the power supply mode of the super capacitor 103 is abnormal, for example, the electric quantity of the super capacitor 103 is insufficient, the power supply mode is switched to the power supply of the battery 105 through the MCU controller 301; when the power supply mode of the super capacitor 103 returns to normal, the power supply mode is switched to the super capacitor 103 for supplying power. The electrical energy collected by the vibration energy harvester can be processed for subsequent use by the module. The direct and indirect charging modes fully utilize the vibration energy collected by the vibration energy collector, ensure the long-term operation of the measuring module 2 and the data processing and transmitting module 3, and realize the long-term monitoring of the power transmission line.
In the embodiment of the present invention, the measurement module is composed of one or more sensors capable of measuring state information of the vibration of the power transmission line, such as acceleration, frequency, displacement, and the like, and is used for accurately monitoring the state of the power transmission line.
The related signal processing circuit of the measuring module consists of one or more of a signal processing circuit, an amplifying circuit and a module for extracting the characteristic value of the data, the received data is subjected to characteristic extraction by utilizing an algorithm, and the fault is early warned in advance when an abnormal vibration signal occurs.
In the embodiment of the present invention, the data processing and transmitting module 3 further includes a circuit and a component required for data transmission; the MCU controller 301 of the data processing and transmitting module 3 receives the data of the measuring module 2, and controls the internal transmitter 302 to transmit the data to the external receiver 303, where the transmitted data is a processed vibration signal characteristic value, so as to reduce the data amount of communication and avoid the waste of communication resources; the MCU controller 301 sends system faults, power conditions, etc. to an external receiver in time; when the MCU controller 301 detects that the vibration characteristic value of the power transmission line exceeds the normal range, alarm information is sent, the fault of the power transmission line is early warned, and data support is provided for maintenance personnel.
In the preferred embodiment of the invention, the self-powered vibration monitoring system can be fixedly arranged at a position 89mm away from the outlet of the wire clamp of the measured power transmission line, and the bending amplitude of the measured wire relative to the wire clamp is used for measuring the vibration degree of the wire; the external receiver 303 may be fixedly mounted on the power tower; the shell is a cubic, circular or other shell, is made of alloy materials, and is coated with insulating materials on the surface; the vibration energy collector 101 is arranged in a magnetic shielding shell, and the rectifying circuit 102, the super capacitor 103, the power management module 104, the relevant signal processing circuit in the measuring module 2 and the circuit of the data processing transmission module 3 are arranged in the magnetic shielding shell, so that the influence of a strong magnetic field around the power transmission line on the normal work of the equipment is prevented; the battery 105, the sensors in the measurement module 2 and the transmitter 302 are mounted inside the housing, outside the shielding case; the surface of the shell is provided with a through hole for extending out of the antenna of the emitter 302, and a gap between the through hole on the shell and the antenna is filled with other materials such as silica gel materials, so that the shell has the functions of rain prevention, moisture prevention, dust prevention and corrosion prevention, and is convenient to install on a power transmission line.
The embodiment of the invention discloses a self-powered vibration monitoring system of a power transmission line, which comprises a self-powered module, a measuring module and a data processing and transmitting module, wherein the self-powered module, the measuring module and the data processing and transmitting module are mutually connected; the self-powered module comprises a vibration energy collector, a rectifying circuit and electric energy storage equipment; the measuring module mainly comprises a vibration sensor and a related signal processing circuit thereof; the data processing and transmitting module comprises circuits and components such as an MCU controller, a transmitter, a receiver and the like; the self-powered vibration monitoring system may be fixedly mounted on the power transmission line. The key point of the technical scheme is that the vibration energy collector converts the vibration of the power transmission line into electric energy, the electric energy is stored in the super capacitor or the battery, and the power is supplied to the subsequent modules in different environments, so that the frequency of battery replacement is reduced, the long-term monitoring of the power transmission line is realized, and the reliability, the safety and the economic benefit of the operation of the power transmission line are improved. In summary, the self-powered vibration monitoring system for the power transmission line provided by the invention reduces the frequency of battery replacement of the vibration monitoring system by using the self-powered module designed by the vibration energy acquisition technology, and realizes long-term effective monitoring of the power transmission line. The invention can also be applied to other industrial equipment generating vibration, such as transformers, reactors, numerical control machines and the like.
Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can make modifications and equivalents to the embodiments of the present invention without departing from the spirit and scope of the present invention, which is set forth in the claims of the present application.
Claims (10)
1. The utility model provides a self-powered vibration monitoring system towards transmission line which characterized in that includes: the device comprises a self-powered module (1), a measuring module (2) and a data processing and transmitting module (3), wherein the output end of the measuring module (2) is connected with the input end of the data processing and transmitting module (3), and the self-powered module (1) is used for supplying power to the measuring module (2) and the data processing and transmitting module (3);
the self-powered module (1) comprises a vibration energy collector (101), a rectifying circuit (102) and electric energy storage equipment which are sequentially connected; the measuring module (2) comprises a sensor and a signal processing circuit of the sensor, and the data processing and transmitting module (3) comprises an MCU controller (301) and a transmitter (302); the input end of the sensor is used for collecting vibration signals of the power transmission line, the output end of the sensor is connected with the input end of the MCU controller (301), the output end of the MCU controller (301) is connected with the input end of the transmitter (302), and the output end of the transmitter (302) is used for outputting received signals.
2. The self-powered vibration monitoring system for the power transmission line according to claim 1, wherein the vibration energy harvester (101) is an electrostatic, piezoelectric, electromagnetic, triboelectric vibration energy harvester.
3. The self-powered vibration monitoring system for an electric power transmission line according to claim 1, wherein the electric energy storage device comprises a super capacitor (103) and a battery (105);
the input end of the super capacitor (103) is connected with the output end of the rectifying circuit (102), and the output end of the super capacitor (103) is connected with the battery (105).
4. The self-powered vibration monitoring system for an electric transmission line according to claim 3, wherein the electric energy storage device further comprises: a boost circuit disposed between the rectifier circuit (102) and the supercapacitor (103).
5. The self-powered vibration monitoring system for an electric transmission line according to claim 3, wherein the electric energy storage device further comprises:
and the power supply management module (104) comprises one or more of an energy indicating circuit, a charging control circuit, a booster circuit, a voltage stabilizing output circuit and a battery overvoltage protection circuit.
6. The self-powered vibration monitoring system for the power transmission line as recited in claim 1, wherein the sensor of the measuring module (2) is capable of measuring at least acceleration, frequency and displacement state information of the vibration of the power transmission line.
7. The self-powered vibration monitoring system for the power transmission line according to claim 1, wherein the signal processing circuit of the measuring module (2) comprises an amplifying circuit and a characteristic value extraction module, and is used for performing characteristic extraction on the received data.
8. The self-powered vibration monitoring system for the power transmission line according to claim 1, wherein a threshold value is preset in the MCU controller (301), and when the received vibration characteristic value exceeds the threshold value, the MCU controller (301) controls the transmitter (302) to send alarm information.
9. The self-powered vibration monitoring system for the power transmission line according to claim 1, wherein the data transmitted by the transmitter (302) is a vibration signal characteristic value.
10. The self-powered vibration monitoring system for the power transmission line according to claim 1, wherein the data processing and transmitting module further comprises:
a receiver (303) for receiving the data sent by the transmitter (302).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110267415.5A CN113091888A (en) | 2021-03-11 | 2021-03-11 | Self-powered vibration monitoring system for power transmission line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110267415.5A CN113091888A (en) | 2021-03-11 | 2021-03-11 | Self-powered vibration monitoring system for power transmission line |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114485910A (en) * | 2022-01-14 | 2022-05-13 | 国网江苏省电力有限公司徐州供电分公司 | Autonomous monitoring system and method for vibration state of high-voltage transmission conductor |
| CN115002162A (en) * | 2022-06-10 | 2022-09-02 | 联泰集群（北京）科技有限责任公司 | Oil-gas communication system based on self-powered technology and machine learning |
| CN116231947A (en) * | 2023-03-17 | 2023-06-06 | 国网江苏省电力有限公司电力科学研究院 | Energy collection device and self-powered vibration monitoring device suitable for transmission line |
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