Vibration early warning device, method and device of power transmission line, communication equipment and storage medium

Abstract

The invention relates to a vibration early warning device, method and device of a power transmission line, communication equipment and a storage medium, and relates to the technical field of power grid monitoring. The method comprises an energy taking device and a communication device in communication connection with the energy taking device, a coil, a hollow material, a vibration element and a magnet are arranged in the energy taking device, the coil is arranged on the surface of the hollow material in a wrapping mode, the vibration element is arranged in the hollow material, and the vibration element suspends the magnet in the hollow material through a pull wire; when the vibration early warning device is installed on a power transmission line and mechanical vibration occurs on the power transmission line, the mechanical vibration is transmitted to the vibration element, so that the magnet moves in the hollow material, and induction current is generated in the coil. And the communication device is used for acquiring the vibration intensity corresponding to the induction current and sending a vibration early warning when the vibration intensity meets a preset condition. By adopting the method, the detection stability of the power transmission line detection equipment can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of power grid monitoring, and in particular to a vibration early warning device, method, device, communication equipment, storage medium and computer program product for a transmission line. Background Art

[0002] At present, the commonly used wireless autonomous power supply methods for power transmission line detection equipment are divided into environmental and power system self-powering technologies. Environmental self-powering technologies include solar energy, temperature difference, vibration, wind energy, etc. This technology is too dependent on the environment and power supply source, which will cause the device to be unable to operate for a long time during actual application. Power system self-powering technology mainly includes electric field and magnetic field self-powering. For AC transmission lines, the coupling coil powering method is usually used, which is most widely used in transmission line online monitoring equipment.

[0003] However, the coupled coil energy extraction method is based on the principle of electromagnetic induction. Both electric and magnetic field self-energy extraction require changing magnetic and electric fields. In the DC transmission line scenario, the magnetic and electric fields are constant, which cannot meet the electromagnetic induction conditions, and cannot autonomously power the detection equipment and use the induction signal vibration warning, making the transmission line's autonomous power supply capacity insufficient, resulting in insufficient detection stability of the transmission line detection equipment. Summary of the invention

[0004] Based on this, it is necessary to provide a vibration warning method, device, communication equipment, computer-readable storage medium and computer program product for a transmission line that can improve the detection stability of the transmission line detection equipment in order to address the above technical problems.

[0005] In a first aspect, the present application provides a vibration early warning device for a power transmission line. The vibration early warning device comprises:

[0006] An energy acquisition device and a communication device connected to the energy acquisition device for communication;

[0007] The energy extraction device is provided with a coil, a hollow material, a vibration element and a magnet. The coil is arranged on the surface of the hollow material by wrapping, the vibration element is arranged inside the hollow material, and the vibration element suspends the magnet in the hollow material through a traction line;

[0008] Among them, when the vibration warning device is installed on a transmission line and mechanical vibration occurs in the transmission line, the mechanical vibration is transmitted to the vibration element to cause the magnet to displace in the hollow material and generate an induced current in the coil; the communication device is used to obtain the vibration intensity corresponding to the induced current and send a vibration warning when the vibration intensity meets the preset conditions.

[0009] In one embodiment, the vibration warning device further includes:

[0010] Power supply; the power supply includes a rectifier, a filter, an overvoltage protection circuit and a voltage stabilizer;

[0011] Among them, the power supply is connected to the coil, the power supply obtains the induced current through the coil, and converts the induced current into direct current through the rectifier; the filter is used to smooth the direct current; the overvoltage protection circuit is used to protect the power supply from overvoltage; the voltage stabilizer is used to stabilize the voltage corresponding to the direct current.

[0012] In one embodiment, the communication device includes a processor, a receiver, and a transmitter; the power supply is connected to the communication device;

[0013] Among them, the receiver is used to receive the electric energy signal corresponding to the induced current; the processor is used to determine the vibration intensity corresponding to the electric energy signal, and determine the vibration warning corresponding to the vibration intensity; the transmitter is used to send the vibration warning to the user equipment; the electric energy signal is one of the induced current, induced electromotive force, and induced power.

[0014] In one of the embodiments, the processor is used to determine the vibration intensity corresponding to the electric energy signal based on a conversion model between the electric energy signal and the vibration intensity, and generate a vibration warning including the vibration intensity when the vibration intensity is greater than a preset warning value.

[0015] In a second aspect, the present application provides a vibration early warning method for a power transmission line, which is applied to a vibration early warning device, wherein the vibration early warning device is installed on the power transmission line, and the vibration early warning device is the vibration early warning device as described in the first aspect, and the method comprises:

[0016] When mechanical vibration occurs in the transmission line, the mechanical vibration is transmitted to the magnet through the vibration element, so that the magnet is displaced inside the hollow material, thereby generating an induced current in the coil based on the principle of electromagnetic induction, and obtaining an induced current corresponding to the mechanical vibration; the induced current is determined based on the rate of change of the magnetic field generated by the displacement;

[0017] The induced current is analyzed according to the principle that the induced electromotive force is proportional to the rate of change of the magnetic field in Faraday's electromagnetic induction principle, so as to obtain the vibration intensity of the transmission line;

[0018] If the vibration intensity is greater than a preset warning value, a vibration warning is sent to the user equipment via the communication device.

[0019] In one embodiment, the method further comprises:

[0020] The induced current is processed by a power supply to obtain a direct current corresponding to the induced current; the power supply processing includes rectification processing, filtering processing, impact protection processing and voltage stabilization processing;

[0021] The direct current is transmitted to the communication device to operate the communication device, and the direct current is stored in the storage device of the power source.

[0022] In one embodiment, the induced current is analyzed according to the principle that the induced electromotive force is proportional to the rate of change of the magnetic field in the Faraday electromagnetic induction principle to obtain the vibration intensity of the transmission line, including:

[0023] Determine the real-time induced electromotive force according to the rate of change of the magnetic flux in the magnetic field over time, and determine the real-time induced current corresponding to the induced electromotive force;

[0024] Based on a preset conversion model between vibration intensity and induced current and the real-time induced current, the vibration intensity corresponding to the real-time induced current is determined.

[0025] In a third aspect, the present application also provides a vibration warning device for a power transmission line. The device comprises:

[0026] an induced current determination module, for, when mechanical vibration occurs in the transmission line, transmitting the mechanical vibration to the magnet through the vibration element, so that the magnet is displaced inside the hollow material, thereby generating an induced current in the coil based on the principle of electromagnetic induction, and obtaining an induced current corresponding to the mechanical vibration; the induced current is determined based on the rate of change of the magnetic field generated by the displacement;

[0027] A vibration intensity determination module, used to analyze the induced current according to the principle that the induced electromotive force is proportional to the rate of change of the magnetic field in the Faraday electromagnetic induction principle, and obtain the vibration intensity of the transmission line;

[0028] The vibration warning module is used to send a vibration warning to the user equipment through the communication device if the vibration intensity is greater than a preset warning value.

[0029] In a fourth aspect, the present application further provides a communication device. The communication device includes a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program:

[0030] When mechanical vibration occurs in the transmission line, the mechanical vibration is transmitted to the magnet through the vibration element, so that the magnet is displaced inside the hollow material, thereby generating an induced current in the coil based on the principle of electromagnetic induction, and obtaining an induced current corresponding to the mechanical vibration; the induced current is determined based on the rate of change of the magnetic field generated by the displacement;

[0031] The induced current is analyzed according to the principle that the induced electromotive force is proportional to the rate of change of the magnetic field in Faraday's electromagnetic induction principle, so as to obtain the vibration intensity of the transmission line;

[0032] If the vibration intensity is greater than a preset warning value, a vibration warning is sent to the user equipment via the communication device.

[0033] In a fifth aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0034] When mechanical vibration occurs in the transmission line, the mechanical vibration is transmitted to the magnet through the vibration element, so that the magnet is displaced inside the hollow material, thereby generating an induced current in the coil based on the principle of electromagnetic induction, and obtaining an induced current corresponding to the mechanical vibration; the induced current is determined based on the rate of change of the magnetic field generated by the displacement;

[0035] The induced current is analyzed according to the principle that the induced electromotive force is proportional to the rate of change of the magnetic field in Faraday's electromagnetic induction principle, so as to obtain the vibration intensity of the transmission line;

[0036] If the vibration intensity is greater than a preset warning value, a vibration warning is sent to the user equipment via the communication device.

[0037] In a sixth aspect, the present application further provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0038] When mechanical vibration occurs in the transmission line, the mechanical vibration is transmitted to the magnet through the vibration element, so that the magnet is displaced inside the hollow material, thereby generating an induced current in the coil based on the principle of electromagnetic induction, and obtaining an induced current corresponding to the mechanical vibration; the induced current is determined based on the rate of change of the magnetic field generated by the displacement;

[0039] The induced current is analyzed according to the principle that the induced electromotive force is proportional to the rate of change of the magnetic field in Faraday's electromagnetic induction principle, so as to obtain the vibration intensity of the transmission line;

[0040] If the vibration intensity is greater than a preset warning value, a vibration warning is sent to the user equipment via the communication device.

[0041] The vibration alarm, method, device, communication device, storage medium and computer program product of the above-mentioned transmission line, when mechanical vibration occurs in the transmission line, transmits the mechanical vibration to the magnet through the vibration element, so that the magnet is displaced inside the hollow material, thereby generating an induced current in the coil based on the principle of electromagnetic induction, and obtaining the induced current corresponding to the mechanical vibration; wherein the induced current is determined based on the rate of change of the magnetic field generated by the displacement. Based on this, the vibration alarm can analyze the induced current according to the principle that the induced electromotive force is proportional to the rate of change of the magnetic field in the Faraday electromagnetic induction principle, and obtain the vibration intensity of the transmission line. If the vibration intensity is greater than the preset warning value, a vibration warning is sent to the user equipment through the communication device, and the induced current can be generated by the mechanical vibration of the transmission line, so that there is no need to additionally power the vibration alarm, ensuring that the vibration alarm can always work and improving the detection stability of the vibration alarm. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] FIG1 is a schematic diagram of a vibration early warning device for a power transmission line in one embodiment;

[0044] FIG2 is a diagram showing an application environment of a vibration early warning method for a power transmission line in one embodiment;

[0045] FIG3 is a schematic flow chart of a vibration early warning method for a power transmission line in one embodiment;

[0046] FIG4 is a schematic flow chart of a vibration early warning method for a power transmission line in another embodiment;

[0047] FIG5 is a structural block diagram of a vibration warning device for a power transmission line in one embodiment;

[0048] FIG. 6 is a diagram showing the internal structure of a communication device in one embodiment. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0050] In an exemplary embodiment, as shown in FIG1 , a vibration early warning device for a power transmission line is provided, comprising:

[0051] The energy collection device 100 and the communication device connected to the energy collection device 100. The energy collection device 100 is provided with a coil 102, a hollow material 101, a vibration element 104 and a magnet 103. The coil 102 is arranged on the surface of the hollow material 101 by wrapping, and the vibration element 104 is arranged inside the hollow material 101. The vibration element 104 suspends the magnet 103 in the hollow material 101 through a traction line.

[0052] Among them, when the vibration warning device is installed on a transmission line and mechanical vibration occurs in the transmission line, the mechanical vibration is transmitted to the vibration element 104, so that the magnet 103 is displaced in the hollow material 101, and an induced current is generated in the coil 102; the communication device is used to obtain the vibration intensity corresponding to the induced current, and send a vibration warning when the vibration intensity meets the preset conditions.

[0053] Specifically, the energy acquisition device 100 can be connected to the communication device by wire or wirelessly. The energy acquisition device 100 is used to convert the mechanical vibration of the power transmission line, convert the mechanical energy of the mechanical vibration into electrical energy, and analyze the induced current generated by the mechanical vibration through the communication device to determine the vibration intensity of the power transmission line, thereby determining whether to send a vibration warning to the user equipment.

[0054] The coil 102 can wrap the surface of the hollow material 101 by winding a single wire, so that the hollow material 101 is inside the coil 102. The fixed end of the vibration element 104 can be fixed to the inner wall of the hollow material 101, and the vibration end of the vibration element 104 can be connected to the magnet 103 through a traction line made of a flexible material, so that the magnet 103 can be displaced with the vibration of the vibration element 104.

[0055] The coil 102 is a carrier for the induced current generated by mechanical vibration. The coil 102 is made of a conductive material. The hollow material 101 can be a hard plastic material or a metal material. In one example, the hollow material 101 can be a non-magnetized material of a hollow aluminum core. The internal space of the hollow material 101 can be a vacuum. The shape of the magnet 103 is not limited. When the magnet 103 moves with the vibration element, it is necessary to ensure that there is a relative displacement between the coil 102 and the magnet. The vibration element 104 is used to amplify the mechanical vibration transmitted by the transmission line and transmit the vibration to the magnet 103 through the traction line.

[0056] Optionally, the energy harvesting device 100 further includes an electric energy detector, which is used to detect the real-time induced current in the coil 102 and send the real-time induced current to the communication device.

[0057] In the above-mentioned vibration alarm, when mechanical vibration occurs in the transmission line, the mechanical vibration is transmitted to the magnet through the vibration element, so that the magnet is displaced inside the hollow material, thereby generating an induced current in the coil based on the principle of electromagnetic induction, and obtaining an induced current corresponding to the mechanical vibration; wherein the induced current is determined based on the rate of change of the magnetic field generated by the displacement. Based on this, the vibration alarm can analyze the induced current according to the principle that the induced electromotive force is proportional to the rate of change of the magnetic field in the Faraday electromagnetic induction principle, and obtain the vibration intensity of the transmission line. If the vibration intensity is greater than the preset warning value, a vibration warning is sent to the user device through the communication device, and the induced current can be generated by the mechanical vibration of the transmission line, so there is no need to additionally power the vibration alarm, ensuring that the vibration alarm can always work and improving the detection stability of the vibration alarm.

[0058] In an exemplary embodiment, the vibration warning device further includes: a power supply; the power supply includes a rectifier, a filter, an overvoltage protection circuit and a voltage stabilizer.

[0059] Among them, the power supply is connected to the coil, the power supply obtains the induced current through the coil, and converts the induced current into direct current through the rectifier; the filter is used to smooth the direct current; the overvoltage protection circuit is used to protect the power supply from overvoltage; the voltage stabilizer is used to stabilize the voltage corresponding to the direct current.

[0060] Specifically, the induced current generated by mechanical vibration can be transmitted to the rectifier in the power supply through the coil, so that the rectifier converts the induced current into direct current. The rectifier is connected to the filter, and the filter can smooth the direct current to obtain filtered direct current. The filter transmits the filtered direct current to the overvoltage protection circuit, and the overvoltage protection circuit processes the filtered direct current according to the preset current and voltage range so that the direct current is within a safe range. The voltage stabilizer stabilizes the direct current within the safety range so that the current and voltage in the power supply can be used by the communication device in the vibration warning device, and the power supply can store the generated induced current.

[0061] In the above-mentioned vibration alarm, the generated induced current can be standardized through the rectifier, filter, overvoltage protection circuit and voltage stabilizer in the power supply, so that the induced current can provide electrical energy for the vibration alarm and store the electrical energy in the power supply, so that the power supply can power the vibration alarm, thereby improving the operating stability and safety of the vibration alarm.

[0062] In an exemplary embodiment, a communication device includes a processor, a receiver, and a transmitter; a power source is connected to the communication device.

[0063] Among them, the receiver is used to receive the electric energy signal corresponding to the induced current; the processor is used to determine the vibration intensity corresponding to the electric energy signal, and determine the vibration warning corresponding to the vibration intensity; the transmitter is used to send the vibration warning to the user equipment; the electric energy signal is one of the induced current, induced electromotive force, and induced power.

[0064] Specifically, the receiver can directly receive the generated induced current, or can receive the induced electromotive force corresponding to the generated induced current, and can receive the induced power corresponding to the induced current. The energy acquisition device can convert the induced current as needed to obtain the induced electromotive force or the induced power. The processor can obtain the electric energy signal, and according to the type of the electric energy signal, convert the electric energy signal to obtain the vibration intensity corresponding to the electric energy signal. Usually the electric energy signal is positively correlated with the vibration intensity. The processor can generate a vibration message with the obtained vibration intensity in two dimensions: vibration time and vibration intensity, and send the vibration message to the user device through the transmitter when the preset sending conditions are met. In one example, if the vibration intensity and vibration time in the vibration message meet the preset warning conditions, a vibration warning containing the vibration message is sent to the user device through the transmitter.

[0065] In the above-mentioned vibration warning device, the electric energy signal corresponding to the induced current is received by the receiver in the communication device, and the vibration intensity corresponding to the electric energy signal is determined by the processor, and finally the vibration warning corresponding to the vibration intensity is sent by the transmitter. This can increase the amount of data for determining the vibration intensity and optimize the sending conditions for whether the vibration warning is sent, thereby improving the accuracy of the vibration warning.

[0066] In an exemplary embodiment, the processor is used to determine the vibration intensity corresponding to the electric energy signal based on a conversion model between the electric energy signal and the vibration intensity, and generate a vibration warning including the vibration intensity when the vibration intensity is greater than a preset warning value.

[0067] Specifically, the conversion model between the electric energy signal and the vibration intensity can be determined based on experiments on vibration alarms made of different materials. In one example, experiments were conducted on a vibration alarm made of material 1 and a vibration alarm made of material 2 with the same vibration intensity to obtain electric energy signal 1 corresponding to material 1 and electric energy signal 2 corresponding to material 2. For different materials, the conversion relationship between the electric energy signal and the vibration intensity in material 1 and the conversion relationship between the electric energy signal and the vibration intensity in material 1 were simulated. For example, the electric energy signal and the vibration intensity of the vibration alarm made of material 1 are linear functions, and the function formula is: , where I is the induced current, ΔA is the vibration intensity, and k is the proportional constant. The k value of the vibration alarm made of material 1 can be determined through multiple experiments. For example, the electric energy signal and vibration intensity of the vibration alarm made of material 1 can be predicted by a machine learning model. The machine learning model is trained by inputting multiple sets of electric energy signals and vibration intensities. After the training is completed, the vibration intensity can be predicted by the obtained electric energy signal.

[0068] In the above-mentioned vibration warning device, the vibration intensity corresponding to the electric energy signal is determined through the conversion model of the electric energy signal and the vibration intensity, and a vibration warning including the vibration intensity is generated when the vibration intensity reaches the preset warning value. It can accurately determine the vibration intensity of the transmission line, reasonably generate a vibration warning, and optimize the frequency of vibration warning generation.

[0069] The vibration warning method for the power transmission line provided in the embodiment of the present application can be applied in the application environment as shown in Figure 2. Among them, the vibration warning device 202 communicates with the server 204 through a communication network. The data storage system can store the data that the server 204 needs to process, such as the preset warning values ​​corresponding to each type of vibration warning device, and the conversion model between the electric energy signal and the vibration intensity. The data storage system can be integrated on the server 204, or it can be placed on the cloud or other network servers. In the case of mechanical vibration of the transmission line, the vibration warning device can generate an induced current along with the mechanical vibration through the energy acquisition device, and the communication device can obtain the preset warning value of the vibration warning device adapted from the server 204, the conversion model between the electric energy signal and the vibration intensity, and determine the vibration intensity corresponding to the induced current, and send a vibration warning to the user device when the vibration intensity is greater than the preset warning value.

[0070] In an exemplary embodiment, as shown in FIG3 , a vibration early warning method for a power transmission line is provided, and the method is described by taking the application of the vibration early warning device 202 in FIG2 as an example, and includes the following steps S302 to S306. Among them:

[0071] Step S302, when mechanical vibration occurs in the transmission line, the mechanical vibration is transmitted to the magnet through the vibration element, so that the magnet is displaced inside the hollow material, thereby generating an induced current in the coil based on the principle of electromagnetic induction, and obtaining an induced current corresponding to the mechanical vibration.

[0072] The induced current is determined based on the rate of change of the magnetic field generated by the displacement. The transmission line may be an outdoor DC transmission line. The mechanical vibration may be vibration caused by wind, mechanical equipment operation, ground vibration, etc. The vibration element may be an elastic element such as a vibration shrapnel or a spring. The hollow material may be a non-magnetic material of a hollow aluminum core, and a hard plastic material.

[0073] Specifically, if mechanical vibration occurs in the transmission line, the energy of the mechanical vibration in the transmission line is concentrated through the vibration element in the vibration alarm, and the vibration energy is transferred to the magnet, causing the magnet to randomly displace inside the hollow material, causing the magnet and the coil to have a relative displacement, thereby converting the vibration energy into electrical energy, generating an induced electromotive force in the coil, and correspondingly generating an induced current. It should be understood that magnets with different magnetic field strengths and the vibration intensity of mechanical vibrations will affect the size of the induced current.

[0074] Step S304, analyzing the induced current according to the principle of Faraday's electromagnetic induction principle that the induced electromotive force is proportional to the rate of change of the magnetic field, and obtaining the vibration intensity of the transmission line.

[0075] In one example, Faraday's law of electromagnetic induction is calculated as follows:

[0076]

[0077] Where ε is the induced electromotive force in volts (V). Φ is the magnetic flux in webers (Wb), which is the product of the magnetic field strength and the area through the loop. It represents the rate of change of magnetic flux, reflecting the change of magnetic field over time. Therefore, the magnitude of induced electromotive force depends on the rate of change of magnetic field strength. When the strength of magnetic field changes dramatically, the induced electromotive force will increase, and the induced current will increase accordingly. In addition, the principle that induced electromotive force is proportional to the rate of change of magnetic field, that is, there is a corresponding conversion model between vibration intensity and induced current, and the conversion model is as follows:

[0078]

[0079] Where I is the induced current, ΔA is the vibration amplitude, and k is an undetermined proportional constant that can be obtained through experimental measurement or theoretical calculation.

[0080] Specifically, when the mechanical vibration of the transmission line is greater, it will drive the magnet inside the coil to shake greatly, causing the magnetic field inside the coil to change dramatically, and generating an induced current with a large change amplitude. In other words, when the mechanical vibration of the transmission line is greater, the change amplitude of Φ in t is also greater, and according to the formula, a larger induced electromotive force and an induced current corresponding to the induced electromotive force will be generated. Therefore, the vibration early warning device can determine the vibration intensity of the transmission line by the magnitude of the induced current. For example, the vibration intensity can be expressed as a vibration amplitude. In the conversion model, the k value of the vibration early warning device made of different materials can be measured separately through actual experiments. In addition, a calculation model can be established to simulate the influence of different transmission lines on the k value by using the mechanical properties of the transmission line conductor as a control parameter, so as to predict the k value through the calculation model. In one example, the material of the transmission line can be metals such as aluminum and copper, and the strength and elastic coefficient of different materials are obtained and used as control parameters of the calculation model. In addition, parameters such as the diameter, length, and tension of the transmission line can be input into the calculation model as control parameters, and the structure supporting the transmission line (such as tower structure and suspension method) can also be input into the calculation model as input parameters, thereby determining the K value under different control parameters based on a large amount of actual experimental data and calculation models.

[0081] Step S306: If the vibration intensity is greater than the preset warning value, a vibration warning is sent to the user equipment via the communication device.

[0082] Among them, the preset warning value can be determined by the control parameters of the transmission line. For example, the control parameters of the transmission line, such as material, strength, elastic coefficient, diameter, tension, etc., can comprehensively determine the preset warning value corresponding to the transmission line.

[0083] Specifically, the vibration alarm can detect whether the vibration intensity exceeds the preset warning value. If the vibration intensity exceeds the preset warning value, a vibration message corresponding to the current vibration intensity can be generated and a vibration alarm including the vibration message can be sent to the corresponding user equipment through a communication device.

[0084] Optionally, the vibration alarm may determine the vibration level of the power transmission line according to a preset alarm value and a current vibration intensity, determine a target user device according to the vibration level, and send a vibration alarm to the target user device.

[0085] The above-mentioned vibration warning method for the transmission line, when the transmission line undergoes mechanical vibration, transmits the mechanical vibration to the magnet through the vibration element, so that the magnet is displaced inside the hollow material, thereby generating an induced current in the coil based on the principle of electromagnetic induction, and obtaining an induced current corresponding to the mechanical vibration; wherein the induced current is determined based on the rate of change of the magnetic field generated by the displacement. Based on this, the vibration warning device can analyze the induced current according to the principle that the induced electromotive force is proportional to the rate of change of the magnetic field in the Faraday electromagnetic induction principle, and obtain the vibration intensity of the transmission line. If the vibration intensity is greater than the preset warning value, a vibration warning is sent to the user equipment through a communication device, and the induced current can be generated by the mechanical vibration of the transmission line, so that there is no need to additionally power the vibration warning device, ensuring that the vibration warning device can always work, improving the detection stability of the vibration warning device, and determining the vibration intensity through the induced current can improve the accuracy of the monitored vibration intensity.

[0086] In an exemplary embodiment, the method also includes: power processing the induced current through a power supply to obtain direct current corresponding to the induced current; the power processing includes rectification processing, filtering processing, impact protection processing and voltage stabilization processing; transmitting the direct current to the communication device to enable the communication device to operate, and storing the direct current in a storage device of the power supply.

[0087] Among them, power processing is used to convert the induced current into electrical energy that can be used by the vibration warning device.

[0088] Specifically, the rectification process can be achieved by a diode or a rectifier bridge. Rectification can be unidirectional rectification or full-wave rectification. The filtering process can smooth the output waveform through components such as capacitors, inductors or LC filters. Among them, the capacitor can store charge and provide current when the load demand is high, thereby reducing the fluctuation of the output voltage. The surge protection process can absorb excessive transient voltages through components such as varistors and transient voltage suppressors to protect subsequent circuits. Voltage stabilization is the process of ensuring that the output voltage remains stable within a preset range. Voltage stabilization can be performed by using a linear regulator or a switching regulator.

[0089] The vibration early warning device can transmit the processed direct current to the communication device to ensure the operation of the communication device. Alternatively, the vibration early warning device can store the processed direct current in the storage device in the power supply, and the storage device can provide energy guarantee for the vibration early warning device when the transmission line is not vibrating.

[0090] In this embodiment, by powering the induced current, unstable alternating current (induced current) can be converted into stable direct current, thereby protecting subsequent circuits and improving the reliability and performance of the entire power supply system.

[0091] In an exemplary embodiment, the specific implementation process of the step of "analyzing the induced current according to the principle that the induced electromotive force is proportional to the rate of change of the magnetic field in the Faraday electromagnetic induction principle to obtain the vibration intensity of the transmission line" includes:

[0092] According to the rate of change of magnetic flux in the magnetic field over time, the real-time induced electromotive force is determined, and the real-time induced current corresponding to the induced electromotive force is determined; based on the preset vibration intensity and induced current conversion model and the real-time induced current, the vibration intensity corresponding to the real-time induced current is determined.

[0093] Specifically, the vibration early warning device can obtain the real-time induced electromotive force generated by the vibration of the transmission line and the real-time induced current corresponding to the induced electromotive force in real time through a measuring device. The vibration early warning device can calculate the real-time vibration intensity corresponding to the real-time induced current through a communication device and a preset conversion model of vibration intensity and induced current.

[0094] Optionally, the vibration early warning device can obtain the real-time induced electromotive force generated by the vibration of the transmission line in real time through the strategy device, and calculate the real-time vibration intensity corresponding to the real-time induced electromotive force through a preset conversion model of vibration intensity and induced electromotive force. Alternatively, the vibration early warning device can obtain the real-time induced power generated by the vibration of the transmission line in real time through the strategy device, and calculate the real-time vibration intensity corresponding to the real-time induced power through a preset conversion model of vibration intensity and induced power.

[0095] In this embodiment, the corresponding vibration intensity can be determined through the conversion model of vibration intensity and induced current, and the real-time induced current obtained by detection, which can improve the accuracy of determining the vibration intensity.

[0096] As shown in FIG. 4 , the specific implementation process of the above-mentioned transmission line vibration early warning method is described in detail below in conjunction with a specific embodiment.

[0097] The embodiment of the present application adopts coils, hollow iron cores, magnets and vibration springs, takes the principle of electromagnetic induction as the technical core, outputs the electric energy signal generated by the mechanical vibration of the transmission line and analyzes the electric energy signal in real time, completes the autonomous power supply of the sensor equipment and the transmission line vibration warning.

[0098] The embodiment of the present application requires the use of a coil, a closed hollow core, a magnet and a vibrating spring. The coil is spirally wound on the surface of the closed hollow core, a vibrating spring is installed on the top of the inner part of the hollow core, a traction line is drawn from the center of the spring to suspend the magnet inside, and the entire device is installed on the transmission line. The vibration of the transmission line drives the vibration of the energy extraction device, thereby causing the internal magnet to produce multi-directional displacement.

[0099] Specifically, the vibration early warning method for a power transmission line comprises the following steps:

[0100] Step 1: The mechanical vibration energy (such as wind, vibration generated by the operation of mechanical equipment, ground vibration, etc.) in the transmission line is concentrated and transferred to the coil or magnet through the vibrating spring, so as to realize the conversion of the mechanical energy of the transmission line vibration into the kinetic energy of the magnet or coil.

[0101] Step 2: Relative displacement is generated between the coil and the magnet, thereby cutting the magnetic flux lines and generating induced electromotive force and induced current in the coil, completing the energy conversion from vibration mechanical energy to electrical energy. In this process, the magnetic field strength can be set independently according to the selection of the magnet.

[0102] Step 3, the converted induced current is processed in parallel through two steps. First, through the mature rectification, filtering, impact protection, voltage stabilization and other technical processing, the online detection equipment (vibration alarm) is powered autonomously. Second, the induced current signal is analyzed based on the principle that the induced electromotive force is proportional to the rate of change of the magnetic field in Faraday's electromagnetic induction principle. The core calculation formula of Faraday's law of electromagnetic induction is as follows.

[0103]

[0104] Where ε is the induced electromotive force in volts (V). Φ is the magnetic flux in webers (Wb), which is the product of the magnetic field strength and the area through the loop. It represents the rate of change of magnetic flux, reflecting the change of magnetic field over time. Therefore, the magnitude of induced electromotive force depends on the rate of change of magnetic field strength. When the strength of magnetic field changes dramatically, the induced electromotive force will increase, and the induced current will increase accordingly. In addition, there is a corresponding model between vibration amplitude and induced current. The simplest model is as follows:

[0105]

[0106] Where I is the induced current, ΔA is the vibration amplitude, and k is an undetermined proportional constant that can be obtained through experimental measurement or theoretical calculation.

[0107] Specifically, when the mechanical vibration of the transmission line is greater, the magnet inside the coil will shake greatly, causing the magnetic field inside the coil to change dramatically, generating an induced current with a large amplitude. It is not difficult to find that when the transmission line vibrates more strongly, the amplitude of the change of Φ will also be greater, and according to the formula, a larger induced current will be generated. Therefore, by analyzing the magnitude of the induced current, the amplitude of the transmission line vibration can be known. For the selection of k, the most direct and accurate method is to carry out actual experimental measurements, or to calculate based on the mechanical properties of the conductor, but it is more difficult because there are too many calculation variables to take into account.

[0108] Step 4, set the vibration amplitude or related threshold. According to the analysis of step 3, the vibration intensity of the transmission line can be reflected by the magnitude of the induced current in the coil, and the vibration amplitude of the transmission line has a limit. When the vibration intensity exceeds this limit, a line break accident will occur. Therefore, the magnitude of the induced current also has a corresponding limit critical value. According to a corresponding model between the vibration amplitude and the induced current, the preset maximum current can be obtained. Through actual experimental measurement and curve fitting, we can know the maximum vibration amplitude of the transmission line △A max The maximum current threshold I can be determined by the value of and k. max .

[0109] In one example, considering the safe operation of the power grid, the actual threshold value may be set to be less than I max For example, the maximum amplitude of the copper conductor after vibration experiment is 8 cm, and the proportional constant k is 4 A / cm. It can be calculated that the maximum current is 2 A, and the actual threshold is set to 1 A. When the monitored induced current exceeds the set 1 A threshold, it indicates that the transmission line is vibrating violently, and the early warning system will trigger an alarm to remind the operation and maintenance personnel to check. Vibration warning information can be sent to the control center through wireless communication devices to achieve remote monitoring and timely response.

[0110] The above four steps complete the complete process of online detection equipment's autonomous power supply and vibration warning.

[0111] The embodiment of the present application does not rely on the power supply source, and there is no need to consider the replacement of the power supply of the equipment. When the transmission line vibrates, the vibration early warning device or other detection equipment can be powered on and output signals autonomously, and the excess power can be stored for standby. The vibration early warning device can realize real-time vibration detection and early warning of the transmission line, reduce operation and maintenance costs, and improve energy utilization efficiency. In addition, the magnetic field strength in the vibration early warning device can be set autonomously according to the selection of the magnet, avoiding the problems of limited energy acquisition and limited use scenarios, improving work efficiency, and increasing the scope of application of the vibration early warning device.

[0112] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0113] Based on the same inventive concept, the embodiment of the present application also provides a transmission line vibration warning device for implementing the above-mentioned transmission line vibration warning method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above-mentioned method, so the specific limitations in the embodiments of one or more transmission line vibration warning devices provided below can refer to the limitations of the transmission line vibration warning method above, and will not be repeated here.

[0114] In an exemplary embodiment, as shown in FIG5 , a vibration warning device 500 for a power transmission line is provided, comprising: an induced current determination module 501, a vibration intensity determination module 502 and a vibration warning module 503, wherein:

[0115] The induced current determination module 501 is used to, when mechanical vibration occurs in the transmission line, transmit the mechanical vibration to the magnet through the vibration element, so that the magnet is displaced inside the hollow material, thereby generating an induced current in the coil based on the principle of electromagnetic induction, and obtaining the induced current corresponding to the mechanical vibration; the induced current is determined based on the rate of change of the magnetic field generated by the displacement;

[0116] The vibration intensity determination module 502 is used to analyze the induced current according to the principle that the induced electromotive force is proportional to the rate of change of the magnetic field in the Faraday electromagnetic induction principle, and obtain the vibration intensity of the transmission line;

[0117] The vibration warning module 503 is used to send a vibration warning to the user equipment through the communication device if the vibration intensity is greater than a preset warning value.

[0118] Furthermore, the device also includes a current storage module, which is used to power the induced current through a power supply to obtain direct current corresponding to the induced current; the power supply processing includes rectification processing, filtering processing, impact protection processing and voltage stabilization processing; the direct current is transmitted to the communication device to enable the communication device to operate, and the direct current is stored in the storage device of the power supply.

[0119] Furthermore, the vibration intensity determination module 502 is specifically used to: determine the real-time induced electromotive force according to the rate of change of the magnetic flux in the magnetic field over time, and determine the real-time induced current corresponding to the induced electromotive force; determine the vibration intensity corresponding to the real-time induced current based on a preset vibration intensity and induced current conversion model and the real-time induced current.

[0120] Each module in the above-mentioned vibration warning device for power transmission lines can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above-mentioned modules can be embedded in or independent of a processor in a communication device in the form of hardware, or can be stored in a memory in the communication device in the form of software, so that the processor can call and execute operations corresponding to each of the above modules.

[0121] In an exemplary embodiment, a communication device is provided, which may be a server, and its internal structure diagram may be shown in FIG6. The communication device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected via a system bus, and the communication interface is connected to the system bus via the input / output interface. The processor of the communication device is used to provide computing and control capabilities. The memory of the communication device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the communication device is used to store preset warning values ​​of vibration intensity, conversion models of vibration intensity and induced current, etc. The input / output interface of the communication device is used to exchange information between the processor and an external device. The communication interface of the communication device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a vibration warning method for a transmission line is implemented.

[0122] Those skilled in the art will understand that the structure shown in FIG. 6 is merely a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the communication device to which the scheme of the present application is applied. The specific communication device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0123] In an exemplary embodiment, a communication device is also provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the following steps when executing the computer program: when mechanical vibration occurs in the transmission line, the mechanical vibration is transmitted to the magnet through a vibration element, so that the magnet is displaced inside the hollow material, thereby generating an induced current in the coil based on the principle of electromagnetic induction, and obtaining an induced current corresponding to the mechanical vibration; the induced current is determined based on the rate of change of the magnetic field generated by the displacement; the induced current is analyzed according to the principle that the induced electromotive force is proportional to the rate of change of the magnetic field in Faraday's electromagnetic induction principle, and the vibration intensity of the transmission line is obtained; if the vibration intensity is greater than the preset warning value, a vibration warning is sent to the user equipment through the communication device.

[0124] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and the computer program implements the following steps when executed by a processor: in the event of mechanical vibration of a transmission line, the mechanical vibration is transmitted to a magnet through a vibration element, so that the magnet is displaced inside a hollow material, thereby generating an induced current in a coil based on the principle of electromagnetic induction, and obtaining an induced current corresponding to the mechanical vibration; the induced current is determined based on the rate of change of the magnetic field generated by the displacement; the induced current is analyzed based on the principle that the induced electromotive force is proportional to the rate of change of the magnetic field in Faraday's electromagnetic induction principle, and the vibration intensity of the transmission line is obtained; if the vibration intensity is greater than a preset warning value, a vibration warning is sent to a user device through a communication device.

[0125] In one embodiment, a computer program product is provided, comprising a computer program, which implements the following steps when executed by a processor: in the event of mechanical vibration of a transmission line, the mechanical vibration is transmitted to a magnet through a vibration element, causing the magnet to displace inside a hollow material, thereby generating an induced current in a coil based on the principle of electromagnetic induction, and obtaining an induced current corresponding to the mechanical vibration; the induced current is determined based on the rate of change of a magnetic field generated by the displacement; the induced current is analyzed based on the principle that the induced electromotive force is proportional to the rate of change of the magnetic field in Faraday's electromagnetic induction principle, and the vibration intensity of the transmission line is obtained; if the vibration intensity is greater than a preset warning value, a vibration warning is sent to a user device through a communication device.

[0126] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0127] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0128] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A vibration warning device for a power transmission line, characterized in that: include: An energy acquisition device and a communication device connected to the energy acquisition device for communication; The energy extraction device is provided with a coil, a hollow material, a vibration element and a magnet. The coil is arranged on the surface of the hollow material by wrapping, the vibration element is arranged inside the hollow material, and the vibration element suspends the magnet in the hollow material through a traction line; Among them, when the vibration warning device is installed on a transmission line and mechanical vibration occurs in the transmission line, the mechanical vibration is transmitted to the vibration element to cause the magnet to displace in the hollow material and generate an induced current in the coil; the communication device is used to obtain the vibration intensity corresponding to the induced current and send a vibration warning when the vibration intensity meets the preset conditions.

2. The vibration warning device according to claim 1, characterized in that: The vibration early warning device also includes: Power supply; the power supply includes a rectifier, a filter, an overvoltage protection circuit and a voltage stabilizer; Among them, the power supply is connected to the coil, the power supply obtains the induced current through the coil, and converts the induced current into direct current through the rectifier; the filter is used to smooth the direct current; the overvoltage protection circuit is used to protect the power supply from overvoltage; the voltage stabilizer is used to stabilize the voltage corresponding to the direct current.

3. The vibration warning device according to claim 2, characterized in that: The communication device comprises a processor, a receiver and a transmitter; the power supply is connected to the communication device; Among them, the receiver is used to receive the electric energy signal corresponding to the induced current; the processor is used to determine the vibration intensity corresponding to the electric energy signal, and determine the vibration warning corresponding to the vibration intensity; the transmitter is used to send the vibration warning to the user equipment; the electric energy signal is one of the induced current, induced electromotive force, and induced power.

4. The vibration warning device according to claim 3, characterized in that: The processor is used to determine the vibration intensity corresponding to the electric energy signal based on a conversion model between the electric energy signal and the vibration intensity, and generate a vibration warning including the vibration intensity when the vibration intensity is greater than a preset warning value.

5. A vibration early warning method for a power transmission line, characterized in that: Applied to a vibration early warning device, the vibration early warning device is installed on a transmission line, the vibration early warning device is the vibration early warning device according to claim 1, and the method comprises: When mechanical vibration occurs in the transmission line, the mechanical vibration is transmitted to the magnet through the vibration element, so that the magnet is displaced inside the hollow material, thereby generating an induced current in the coil based on the principle of electromagnetic induction, and obtaining an induced current corresponding to the mechanical vibration; the induced current is determined based on the rate of change of the magnetic field generated by the displacement; The induced current is analyzed according to the principle that the induced electromotive force is proportional to the rate of change of the magnetic field in Faraday's electromagnetic induction principle, so as to obtain the vibration intensity of the transmission line; If the vibration intensity is greater than a preset warning value, a vibration warning is sent to the user equipment via the communication device.

6. The method according to claim 5, characterized in that The method further comprises: The induced current is processed by a power supply to obtain a direct current corresponding to the induced current; the power supply processing includes rectification processing, filtering processing, impact protection processing and voltage stabilization processing; The direct current is transmitted to the communication device to operate the communication device, and the direct current is stored in the storage device of the power source.

7. The method according to claim 5, characterized in that The method of analyzing the induced current according to the principle that the induced electromotive force is proportional to the rate of change of the magnetic field in the Faraday electromagnetic induction principle to obtain the vibration intensity of the transmission line includes: Determine the real-time induced electromotive force according to the rate of change of the magnetic flux in the magnetic field over time, and determine the real-time induced current corresponding to the induced electromotive force; Based on a preset conversion model between vibration intensity and induced current and the real-time induced current, the vibration intensity corresponding to the real-time induced current is determined.

8. A vibration warning device for a power transmission line, characterized in that: The device comprises: an induced current determination module, for, when mechanical vibration occurs in the transmission line, transmitting the mechanical vibration to the magnet through a vibration element, so that the magnet is displaced inside the hollow material, thereby generating an induced current in the coil based on the principle of electromagnetic induction, and obtaining an induced current corresponding to the mechanical vibration; the induced current is determined based on the rate of change of the magnetic field generated by the displacement; A vibration intensity determination module, used to analyze the induced current according to the principle that the induced electromotive force is proportional to the rate of change of the magnetic field in the Faraday electromagnetic induction principle, and obtain the vibration intensity of the transmission line; The vibration warning module is used to send a vibration warning to the user equipment through the communication device if the vibration intensity is greater than a preset warning value.

9. A communication device, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 5 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 5 to 7 are implemented.

Images