A power transmission line aeolian vibration sensing and early warning device and method

Abstract

The application provides a power transmission line aeolian vibration sensing and early warning device and method, comprising: a hollow cylindrical structure wire clamp (1), a vibration sensor (7) and a plurality of pressure sensors (6) arranged in the wire clamp (1), and a data processing device; the wire clamp (1) is hung on a ground wire of a power transmission line; the wire clamp (1) is connected with the data processing device; the vibration sensor (7) and the plurality of pressure sensors (6) are in communication connection with the data processing device; the data processing device processes ground wire surface pressure collected by the pressure sensor (6) and ground wire vibration acceleration collected by the vibration sensor (7) to obtain ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain and send to a remote server; the application realizes synchronous monitoring of ground wire aerodynamic load and aeolian vibration, and provides complete basic data for power transmission line ground wire aeolian vibration disaster early warning.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of monitoring of aeolian vibration of overhead transmission line, and particularly relates to an aeolian vibration sensing and early warning device and method for overhead transmission line. BACKGROUND

[0002] If the amplitude of aeolian vibration exceeds the allowable value, fatigue damage of some line components will occur, such as fatigue broken strand of ground wire, fittings, spacer, etc. In particular, the cross section, tension, suspension point height and span of the ground wire of the ultra-high voltage and large span line are continuously increasing, which greatly increases the vibration energy of the ground wire by wind, and the vibration intensity of the ground wire is much more serious than that of the ordinary span. Once the fatigue broken line occurs, it will bring serious harm to the safe operation of the power grid, and sometimes even the whole line needs to be replaced. With the increase of service life of the transmission line, in recent years, the problem of aeolian vibration of the transmission line has become more and more prominent, which has seriously threatened the safe operation of the transmission line, especially the ultra-high voltage and large span line.

[0003] Aerodynamic load, structural mechanical characteristics and vibration response are the main variables for the evaluation of aeolian vibration state, risk assessment and life prediction of the transmission line. In order to master the aeolian vibration of the ground wire, the relative bending amplitude at a distance of 89mm from the ground wire and the line clamp separation point is currently measured to evaluate the vibration level. The sensing device for measuring the aeolian vibration of the ground wire usually measures by using the normal mounting method and the inverted mounting method, and the sensors for measuring vibration mainly include cantilever beam resistance strain sensor, acceleration sensor, fiber grating sensor and laser sensor. The existing aeolian vibration sensing device has played an effective supporting role for short-term state evaluation. For the disaster early warning, risk assessment and life prediction of the aeolian vibration of the transmission line, there is a lack of synchronous measurement means of aerodynamic load and other vibration response quantities. SUMMARY

[0004] In order to solve the above-mentioned deficiencies in the prior art, the present application provides an aeolian vibration sensing device for transmission line, comprising: a line clamp (1) in a hollow cylindrical structure, a vibration sensor (7) and a plurality of pressure sensors (6) arranged in the line clamp (1), and a data processing device.

[0005] The line clamp (1) is suspended on the ground wire of the transmission line.

[0006] The line clamp (1) is connected with the data processing device.

[0007] The vibration sensor (7) and the plurality of pressure sensors (6) are in communication connection with the data processing device.

[0008] The data processing device processes the surface pressure of the ground wire collected by the pressure sensor (6) and the vibration acceleration of the ground wire collected by the vibration sensor (7) to obtain the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire and sends them to a remote server.

[0009] Preferably, the cross section of the clamp (1) is a circular ring structure, wherein the inner ring diameter matches the outer diameter of the ground wire, a plurality of pressure measuring holes (3) are arranged on the outer ring, the vibration sensor (7) and the plurality of pressure sensors (6) are arranged between the inner ring and the outer ring, each pressure sensor (6) corresponds to a pressure measuring hole (3), and the vibration sensor (7) is arranged close to the inner ring.

[0010] Preferably, the data processing device comprises a suspension box (2), an integrated circuit (8), a battery (9) and a solar panel (10).

[0011] The suspension box (2) is a hollow cylindrical structure, the solar panel (10) is fixed to the outer surface of the cylindrical structure, and the integrated circuit (8) and the battery (9) are arranged in the cylindrical structure.

[0012] The clamp (1) is fixedly connected with the suspension box (2).

[0013] The integrated circuit (8) is in communication connection with the pressure sensor (6) and the vibration sensor (7), and is used for processing the surface pressure of the ground wire collected by the pressure sensor (6) and the vibration acceleration of the ground wire collected by the vibration sensor (7) to obtain the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire and sending them to a remote server.

[0014] The integrated circuit (8) is connected with the battery (9).

[0015] The battery (9) is connected with the solar panel (10).

[0016] Preferably, the integrated circuit (8) comprises a data acquisition module, a CPU calculation module, a storage module and a communication module.

[0017] The data acquisition module, the CPU calculation module and the communication module are connected with the storage module.

[0018] The data acquisition module is connected with the pressure sensor (6) and the vibration sensor (7) to collect the surface pressure of the ground wire measured by the pressure sensor (6) and the vibration acceleration of the ground wire measured by the vibration sensor (7).

[0019] The CPU calculation module calculates the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire according to the ground wire surface pressure measured by the pressure sensor (6) and the ground wire vibration acceleration measured by the vibration sensor (7);

[0020] The storage module acquires and stores the ground wire surface pressure measured by the pressure sensor (6), the ground wire vibration acceleration measured by the vibration sensor (7) and the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire calculated by the CPU calculation module.

[0021] The communication module sends the data in the storage module to a remote server.

[0022] Preferably, the aerodynamic force of the ground wire includes: the average axial unit length resistance of the ground wire and the average axial unit length lift of the ground wire.

[0023] Preferably, the calculation formula of the average axial unit length resistance of the ground wire is as follows:

[0024]

[0025] In the formula, F D is the average axial unit length resistance of the ground wire, P i (t) is the point pressure time history at measuring point i, N is the total number of spanwise measuring points, T is the total sampling time, n is the included angle between the center line of measuring point i and measuring point i-1 and the center line of measuring point i and measuring point i+1, r is the radius of the circumscribed circle of the ground wire (m), and θ is the angle of measuring point i.

[0026] Preferably, the calculation formula of the average axial unit length lift of the ground wire is as follows:

[0027]

[0028] In the formula, F f is the average axial unit length lift of the ground wire, P i (t) is the point pressure time history at measuring point i, N is the total number of spanwise measuring points, T is the total sampling time, n is the included angle between the center line of measuring point i and measuring point i-1 and the center line of measuring point i and measuring point i+1, r is the radius of the circumscribed circle of the ground wire (m), and θ is the angle of measuring point i.

[0029] Preferably, the calculation formula of the dynamic bending strain of the ground wire is as follows:

[0030]

[0031] In the formula, ε is the dynamic bending strain of the ground wire at the suspension clamp and the damper clamp; H is the running tension of the ground wire; EI minThe minimum bending stiffness of the wire; a represents the distance between the vibration sensor and the wire clamp outlet; d is the outermost strand diameter of the wire; A is the relative amplitude value measured by the instrument.

[0032] Preferably, the vibration sensor (7) is a 9-axis MEMS vibration sensor composed of an accelerometer, a gyroscope or a magnetic sensor.

[0033] Preferably, the wire clamp (1) further comprises a waterproof and breathable membrane and a silica gel structure;

[0034] The waterproof and breathable membrane pressure measuring hole is fixedly connected, and the pressure sensor (6) is connected with the waterproof and breathable membrane through the silica gel structure.

[0035] Preferably, the wire clamp (1) further comprises a bolt and a rotating shaft (11);

[0036] The bolt and the rotating shaft (11) are arranged between the inner ring and the outer ring of the circular ring structure, and the hollow cylindrical structure is divided into two parts along the radial direction, one end is connected by a bolt, and the other end is connected by a rotating shaft (11).

[0037] Preferably, the wire clamp (1) further comprises an elastic protective layer (5);

[0038] The elastic protective layer (5) is arranged between the inner ring and the ground wire;

[0039] The elastic protective layer (5) is made of an anti-aging and corrosion-resistant elastic material, and an aluminum alloy plate is embedded in the elastic protective layer (5).

[0040] Preferably, the surface of the integrated circuit board (8) is provided with a nano-hydrophobic coating.

[0041] Preferably, the device further comprises a hollow structure connecting piece (4) and a connecting line arranged in the hollow structure;

[0042] The wire clamp (1) is connected with the suspension box (2) through the connecting piece (4);

[0043] The data acquisition module is connected with the pressure sensor (6) and the vibration sensor (7) through the connecting line arranged in the hollow structure.

[0044] Preferably, the number of pressure measuring holes (3) is not less than 8.

[0045] Preferably, the inner diameter of the pressure measuring hole (3) is set according to the size of the pressure sensor (6) and should not be greater than 1mm.

[0046] Preferably, the material of the wire clamp (1) is anodized aluminum or stainless steel alloy.

[0047] The corners of the device are preferably in arc structure and are treated against corona.

[0048] Based on the same design idea, the application provides a method for sensing the aeolian vibration of a power transmission line, comprising: installing the intelligent sensing and early warning device for the aeolian vibration of the ground wire of a power transmission line on the ground wire of the power transmission line;

[0049] The pressure sensor (6) arranged in the wire clamp (1) of the device for sensing the aeolian vibration of the ground wire of a power transmission line is used to measure the surface pressure of the ground wire, and the vibration sensor (7) is used to measure the vibration acceleration of the ground wire.

[0050] The data processing device of the device for sensing the aeolian vibration of the ground wire of a power transmission line is used to process the surface pressure of the ground wire measured by the pressure sensor (6) and the vibration acceleration of the ground wire measured by the vibration sensor (7) to obtain the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire and send them to a remote server.

[0051] Preferably, the data processing device of the device for sensing the aeolian vibration of the ground wire of a power transmission line is used to process the surface pressure of the ground wire measured by the pressure sensor (6) and the vibration acceleration of the ground wire measured by the vibration sensor (7) to obtain the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire and send them to a remote server, comprising:

[0052] The data acquisition module of the integrated circuit (8) in the data processing device acquires the surface pressure of the ground wire measured by the pressure sensor (6) and the vibration acceleration of the ground wire measured by the vibration sensor (7);

[0053] The CPU calculation module of the integrated circuit (8) calculates the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire according to the surface pressure of the ground wire measured by the pressure sensor (6) and the vibration acceleration of the ground wire measured by the vibration sensor (7);

[0054] The storage module of the integrated circuit (8) acquires and stores the surface pressure of the ground wire measured by the pressure sensor (6), the vibration acceleration of the ground wire measured by the vibration sensor (7) and the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire calculated by the CPU calculation module;

[0055] The communication module of the integrated circuit (8) regularly sends the data in the storage module to a remote server.

[0056] Preferably, the aerodynamic force of the ground wire comprises the average resistance per unit length in the axial direction of the ground wire and the average lift per unit length in the axial direction of the ground wire.

[0057] Preferably, the calculation formula of the average resistance per unit length in the axial direction of the ground wire is as follows:

[0058]

[0059] F = P / L D F = P / L i (t) is the point pressure time history at point i, N is the total number of spanwise points, T is the total sampling time, n is the angle between the centerline of point i and point i-1 and the centerline of point i and point i+1, r is the radius of the wire circumscribed circle (m), and θ is the angle of point i.

[0060] Preferably, the formula for calculating the average lift per unit length of the wire is as follows:

[0061]

[0062] F = P / L f F = P / L i (t) is the point pressure time history at point i, N is the total number of spanwise points, T is the total sampling time, n is the angle between the centerline of point i and point i-1 and the centerline of point i and point i+1, r is the radius of the wire circumscribed circle (m), and θ is the angle of point i.

[0063] Preferably, the formula for calculating the dynamic bending strain of the ground wire is as follows:

[0064]

[0065] ε = H / (EI) a min H is the running tension of the wire; EI is the minimum bending stiffness of the wire; a represents the distance of the vibration sensor from the outlet of the wire clamp; d is the outermost strand diameter of the wire; and A is the relative amplitude value measured by the instrument.

[0066] Based on the same design idea, the application provides a power transmission line wind vibration early warning device, which comprises a hollow cylindrical wire clamp (1), a vibration sensor (7) and a plurality of pressure sensors (6) arranged in the wire clamp (1), and a data processing device.

[0067] The wire clamp (1) is hung on the ground wire of the power transmission line.

[0068] The wire clamp (1) is connected with the data processing device.

[0069] The vibration sensor (7) and the plurality of pressure sensors (6) are in communication connection with the data processing device.

[0070] The data processing device processes the surface pressure of the ground wire collected by the pressure sensor (6) and the vibration acceleration of the ground wire collected by the vibration sensor (7) to obtain the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire; is also used for judging whether the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire exceed the set threshold value, and an alarm signal is generated when it exceeds; is also used for sending the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain data of the ground wire to a remote server or for sending the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain data and alarm signal of the ground wire to a remote server.

[0071] Based on the same design idea, the application provides a power transmission line aeolian vibration early warning method, which comprises the following steps of: installing a power transmission line ground wire aeolian vibration intelligent sensing early warning device on a ground wire of a power transmission line;

[0072] The surface pressure of the ground wire is measured by a pressure sensor (6) arranged in a wire clamp (1) of the power transmission line ground wire aeolian vibration sensing device, and the vibration acceleration of the ground wire is measured by a vibration sensor (7).

[0073] The data processing device of the power transmission line ground wire aeolian vibration sensing device processes the surface pressure of the ground wire collected by the pressure sensor (6) and the vibration acceleration of the ground wire collected by the vibration sensor (7) to obtain the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire.

[0074] The data processing device judges whether the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire exceed the set threshold value, and an alarm signal is generated when it exceeds.

[0075] The data processing device sends the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain data of the ground wire to a remote server or sends the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain data and alarm signal of the ground wire to a remote server.

[0076] Compared with the closest prior art, the application has the beneficial effects that:

[0077] 1. The present application provides a kind of transmission line aeolian vibration sensing device and method, comprising: hollow cylindrical structure's line clamp (1), vibration sensor (7) and multiple pressure sensors (6) being arranged in the line clamp (1) and data processing device;The line clamp (1) is hung on the ground wire of transmission line;The line clamp (1) is connected with the data processing device;The vibration sensor (7) and multiple pressure sensors (6) are connected with the data processing device;The data processing device processes the ground wire surface pressure collected by pressure sensor (6) and the ground wire vibration acceleration collected by vibration sensor (7) to obtain ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain and send to remote server;The present application realizes the synchronous monitoring of ground wire aerodynamic load and aeolian vibration, provides complete basic data for transmission line ground wire aeolian vibration disaster early warning.

[0078] 2, The present application provides a kind of transmission line aeolian vibration early warning device and method, comprising: hollow cylindrical structure's line clamp (1), vibration sensor (7) and multiple pressure sensors (6) being arranged in the line clamp (1) and data processing device;The line clamp (1) is hung on the ground wire of transmission line;The line clamp (1) is connected with the data processing device;The vibration sensor (7) and multiple pressure sensors (6) are connected with the data processing device;The data processing device processes the ground wire surface pressure collected by pressure sensor (6) and the ground wire vibration acceleration collected by vibration sensor (7) to obtain ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain;Also for determining whether ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain exceed the set threshold, when exceeding, produce alarm signal;Also for the ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain data are sent to remote server or for the ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain data and alarm signal are sent to remote server, the present application not only realizes the synchronous monitoring of ground wire aerodynamic load and aeolian vibration, provides complete basic data for transmission line ground wire aeolian vibration disaster early warning, also can alarm when ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain exceed threshold, reduce the damage of ground wire. BRIEF DESCRIPTION OF DRAWINGS

[0079] Figure 1 : The structural diagram of the transmission line ground wire aeolian vibration intelligent sensing early warning device of the present application;

[0080] Figure 2 : The sectional view of the present application in A-A; Figure 1

[0081] Figure 3 : The coordinate definition diagram of the present application;

[0082] ​Figure 4 : flow chart of the transmission line ground wire aeolian vibration sensing method of the present application;

[0083] Figure 5 : flow chart of the transmission line ground wire aeolian vibration early warning method of the present application;

[0084] Reference signs:

[0085] 1 - wire clamp, 2 - suspension box, 3 - pressure measuring hole, 4 - connecting piece, 5 - elastic protective layer, 6 - pressure sensor, 7 - vibration sensor, 8 - integrated circuit, 9 - battery, 10 - solar panel, 11 - rotating shaft. DETAILED DESCRIPTION

[0086] In order to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application.

[0087] Embodiment 1

[0088] The present application provides a transmission line aeolian vibration sensing device, as shown in the drawings, comprising: a wire clamp 1 of a hollow cylindrical structure, a vibration sensor 7 and a plurality of pressure sensors 6 arranged in the wire clamp 1, and a data processing device. Figure 1 The wire clamp 1 is suspended on the ground wire of the transmission line.

[0089] The wire clamp 1 is connected with the data processing device.

[0090] The vibration sensor 7 and the plurality of pressure sensors 6 are in communication connection with the data processing device.

[0091] The data processing device processes the ground wire surface pressure collected by the pressure sensor 6 and the ground wire vibration acceleration collected by the vibration sensor 7 to obtain the ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain and sends them to a remote server.

[0092] As shown in the drawings, the wire clamp 1 is a circular ring structure in cross section, wherein the inner ring diameter matches the outer diameter of the ground wire, a plurality of pressure measuring holes 3 are arranged on the outer ring, the vibration sensor 7 and the plurality of pressure sensors 6 are arranged between the inner ring and the outer ring, and each pressure sensor 6 corresponds to one pressure measuring hole 3, and the vibration sensor 7 is arranged close to the inner ring.

[0093] Figure 2 The data processing device comprises a suspension box 2, an integrated circuit 8, a battery 9 and a solar panel 10.

[0094] The data processing device comprises a suspension box 2, an integrated circuit 8, a battery 9 and a solar panel 10.

[0095] ​The suspension box 2 is a hollow cylindrical structure, the solar cell panel 10 is fixed on the outer surface of the cylindrical structure, and the integrated circuit 8 and the battery 9 are arranged in the cylindrical structure;

[0096] The wire clamp 1 is fixedly connected with the suspension box 2.

[0097] The integrated circuit 8 is in communication connection with the pressure sensor 6 and the vibration sensor 7, and is used for processing the ground wire surface pressure collected by the pressure sensor 6 and the ground wire vibration acceleration collected by the vibration sensor 7 to obtain the ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain and send them to a remote server.

[0098] The integrated circuit 8 is connected with the battery 9.

[0099] The battery 9 is connected with the solar cell panel 10.

[0100] The integrated circuit 8 comprises a data acquisition module, a CPU calculation module, a storage module and a communication module.

[0101] The data acquisition module, the CPU calculation module and the communication module are all connected with the storage module.

[0102] The data acquisition module is connected with the pressure sensor 6 and the vibration sensor 7, and collects the ground wire surface pressure measured by the pressure sensor 6 and the ground wire vibration acceleration measured by the vibration sensor 7.

[0103] The CPU calculation module calculates the ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain according to the ground wire surface pressure measured by the pressure sensor 6 and the ground wire vibration acceleration measured by the vibration sensor 7.

[0104] The storage module obtains and stores the ground wire surface pressure measured by the pressure sensor 6, the ground wire vibration acceleration measured by the vibration sensor 7 and the ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain calculated by the CPU calculation module.

[0105] The communication module sends the data in the storage module to a remote server.

[0106] The ground wire aerodynamic force comprises a ground wire axial unit length average resistance and a ground wire axial unit length average lift.

[0107] The calculation formula of the ground wire axial unit length average resistance is as follows:

[0108]

[0109] In the formula, F D is the ground wire axial unit length average resistance, Pi (t) is the point pressure time history at point i, N is the total number of spanwise points, T is the total sampling time, n is the angle between the centerline of point i and point i-1 and the centerline of point i and point i+1, r is the radius of the outer circle of the conductor (m), and θ is the angle of point i.

[0110] The calculation formula of the average axial unit length lift of the conductor is as follows:

[0111]

[0112] In the formula, F f is the average axial unit length lift of the conductor, P i (t) is the point pressure time history at point i, N is the total number of spanwise points, T is the total sampling time, n is the angle between the centerline of point i and point i-1 and the centerline of point i and point i+1, r is the radius of the outer circle of the conductor (m), and θ is the angle of point i.

[0113] The calculation formula of the dynamic bending strain of the conductor is as follows:

[0114]

[0115] In the formula, ε is the dynamic bending strain of the conductor at the suspension clamp and the damper clamp; H is the operating tension of the conductor; EI min is the minimum bending stiffness of the conductor; a represents the distance of the vibration sensor from the outlet of the clamp; d is the outermost strand diameter of the conductor; and A is the relative amplitude value measured by the instrument. The vibration sensor 7 is a 9-axis MEMS vibration sensor composed of an accelerometer, a gyroscope, or a magnetic sensor.

[0116] The clamp 1 further comprises a waterproof and breathable membrane and a silica gel structure;

[0117] The waterproof and breathable membrane pressure measuring hole is fixedly connected, and the pressure sensor 6 is detachably connected with the waterproof and breathable membrane through the silica gel structure.

[0118] The clamp 1 further comprises a bolt and a rotating shaft 11.

[0119] The bolt and the rotating shaft 11 are both arranged between the inner ring and the outer ring of the circular ring structure, and the hollow cylindrical structure is divided into two parts along the radial direction, one end is connected through the bolt, and the other end is connected through the rotating shaft 11.

[0120] The clamp 1 further comprises an elastic protective layer 5.

[0121] The elastic protective layer 5 is arranged between the inner ring and the conductor.

[0122] The elastic protective layer 5 is made of an anti-aging and corrosion-resistant elastic material, and an aluminum alloy panel is embedded in the elastic protective layer 5.

[0123] The surface of the integrated circuit board 8 is provided with a nano-hydrophobic coating.

[0124] The device further comprises a connecting piece 4 of a hollow structure and a connecting wire arranged in the hollow structure.

[0125] The wire clamp 1 is connected with the suspension box 2 through the connecting piece 4.

[0126] The data acquisition module is connected with the pressure sensor 6 and the vibration sensor 7 through the connecting wire arranged in the hollow structure.

[0127] The number of the pressure measuring holes 3 is not less than 8.

[0128] The inner diameter of the pressure measuring hole 3 is set according to the size of the pressure sensor 6 and should not be greater than 1 mm.

[0129] The material of the wire clamp 1 is anodized aluminum or stainless steel alloy.

[0130] The corners of the device all adopt a circular arc structure and are treated for anti-corona.

[0131] Specifically, the device comprises a circular ring type hollow wire clamp 1 and a data processing device, the wire clamp 1 is provided with pressure measuring holes 3, pressure sensors 6 and vibration sensors 7, and the suspension box 2 of the data processing device is provided with an integrated circuit 8, a battery 9 and a solar panel 10.

[0132] The wire clamp 1 is divided into two halves of 1 / 3 and 2 / 3 along the radial direction. One end of the 2 / 3 half wire clamp is connected to the suspension box 2, the other end is connected to the 1 / 3 half wire clamp through a rotating shaft 11, and the other end of the 1 / 3 half wire clamp is connected to the suspension box 2 through a bolt.

[0133] The rotating shaft 11 is waterproofed by a silica gel structure.

[0134] The wire clamp 1 is provided with pressure measuring holes 3, and the hole diameter is 1 mm.

[0135] The pressure measuring holes 3 are arranged symmetrically up and down and left and right, and there are at least 8 of them.

[0136] The connecting piece 4 between the wire clamp 1 and the suspension box 2 is designed to be hollow, and the opening position is in the same plane as the pressure measuring hole 3, so as to avoid interference with the flow field of the structure itself.

[0137] The length of the connecting piece 4 between the wire clamp 1 and the suspension box 2 is not less than 0.75 times the diameter of the ground wire.

[0138] The direct contact part of the wire clamp 1 with the ground wire has an elastic protective layer 5.

[0139] The pressure sensor 6 is connected to the pressure measuring hole 3 through a waterproof and breathable membrane and a silica gel structure, and is used to measure the wind pressure on the surface of the ground wire.

[0140] The waterproof and breathable membrane is used to prevent water from entering the inside of the device, and is preferably made of polytetrafluoroethylene material.

[0141] The wire clamp 1 contains a vibration sensor 7, which is mainly used for measuring the vibration response of the ground wire, and is preferably a 9-axis MEMS vibration sensor composed of an accelerometer, a gyroscope and a magnetic sensor.

[0142] The data processing device contains an integrated circuit board 8 and a battery pack 9.

[0143] The integrated circuit board 8 is composed of a data acquisition unit, a CPU calculation module, a memory card and a communication module, and is used for data acquisition, storage, operation and communication of the sensor.

[0144] The CPU calculation module has written algorithms for solving the displacement and dynamic bending strain of the ground wire according to the measured acceleration, and algorithms for identifying the aerodynamic force and vibration frequency based on the surface pressure of the ground wire.

[0145] The surface of the integrated circuit board 8 has a nano-hydrophobic coating, which is preferably formed by plasma-assisted chemical vapor deposition.

[0146] The outer surface of the suspension box 2 is covered with a solar panel 8, which is used to power the device.

[0147] All corners of the device are in the form of a circular arc and are subjected to anti-corona treatment.

[0148] The device is made of anodized aluminum or stainless steel alloy material.

[0149] The elastic protective layer 5 is made of an anti-aging and corrosion-resistant elastic material, and an aluminum alloy plate is embedded in the body.

[0150] As shown in Figure 3 , the surface pressure of the ground wire measured by the pressure sensor is decomposed according to the x-axis and y-axis in the cross section, and the average resistance per unit length of the wire axis and the average lift per unit length of the wire axis are obtained by integrating along the x-axis and y-axis respectively according to the arc length weighting of the measuring point.

[0151] The calculation formula of the average resistance per unit length of the wire axis is as follows:

[0152]

[0153] In the formula, F D is the average resistance per unit length of the wire axis, P i(t) represents the pressure time history at measuring point i, N represents the total number of measuring points in the spanwise direction, T represents the total sampling time, n represents the angle between the centerline of measuring point i and measuring point i-1 and the centerline of measuring point i and measuring point i+1, r represents the radius of the circumcircle of the conductor (m), and θ represents the angle of measuring point i.

[0154] The formula for calculating the average lift per unit length of the conductor along the axial direction is as follows:

[0155]

[0156] In the formula, F f P is the average lift per unit length of the conductor along its axial direction. i (t) represents the pressure time history at measuring point i, N represents the total number of measuring points in the spanwise direction, T represents the total sampling time, n represents the angle between the centerline of measuring point i and measuring point i-1 and the centerline of measuring point i and measuring point i+1, r represents the radius of the circumcircle of the conductor (m), and θ represents the angle of measuring point i.

[0157] A fast Fourier transform is performed on the average lift time history per unit length of the conductor axial direction, and the amplitude is normalized to obtain the lift spectrum curve. The frequency corresponding to the maximum amplitude is the frequency of the conductor-ground wire's aerodynamic vibration.

[0158] Based on the angle measured by the gyroscope in the accelerometer, the acceleration signal is converted into a three-dimensional coordinate system composed of the conductor axis and cross-section;

[0159] The vibration velocity of the conductor is obtained by integrating the vibration acceleration signal of the conductor measured by the accelerometer once, and the vibration displacement of the conductor is obtained by integrating it twice.

[0160] When only one of these devices is installed on the conductor, the relative amplitude value is approximately equal to the vibration displacement, and it is preferably installed 89mm from the outlet of the suspension clamp. When two of these devices are installed on the conductor, the relative amplitude value is equal to the difference in amplitude between the two devices.

[0161] Calculate the dynamic bending strain of the conductor / ground wire based on the following relationship between amplitude and dynamic bending strain:

[0162]

[0163] P=(H / EI min ) 0.5

[0164] In the formula, ε is the dynamic bending strain of the conductor at the suspension clamp and vibration damper clamp. -6 cm / cm, expressed as micro-strain; H is the conductor running tension; EI min denoted as the minimum bending stiffness of the conductor; 'a' represents the distance from the vibration sensor to the clamp outlet, typically taken as 89 mm; 'd' is the outermost strand diameter of the conductor; and 'A' is the relative amplitude value (PP) measured by the instrument.

[0165] The application overcomes the synchronous measurement technology of the surface pressure and vibration amplitude of the ground wire, realizes the edge analysis and early warning evaluation of the aerodynamic load, vibration response, wake vortex shedding characteristics and ground wire sag, and compared with the traditional device which only monitors the vibration response, the device realizes the synchronous monitoring and early warning evaluation of the ground wire sag, ground wire aerodynamic load and wind vibration, provides more complete basic data for the wind vibration disaster warning, state evaluation, risk assessment and life prediction of the ground wire of the power transmission line. Meanwhile, the application considers the waterproof of the device, and performs multi-level waterproof treatment on the device by adopting the waterproof and breathable film technology and nano hydrophobic coating technology. In addition, the design of the whole device places the mass center below the centroid of the ground wire section, and has a certain vibration reduction effect.

[0166] Example 2

[0167] The application provides a power transmission line wind vibration sensing method, as shown in the formula: Figure 4 The application provides a power transmission line wind vibration sensing method, as shown in the formula:

[0168] The power transmission line ground wire wind vibration intelligent sensing and early warning device is installed on the ground wire of the power transmission line.

[0169] The pressure sensor 6 arranged in the wire clamp 1 of the power transmission line ground wire wind vibration sensing device is used to measure the surface pressure of the ground wire and the vibration sensor 7 is used to measure the vibration acceleration of the ground wire.

[0170] The data processing device of the power transmission line ground wire wind vibration sensing device is used to process the surface pressure of the ground wire collected by the pressure sensor 6 and the vibration acceleration of the ground wire collected by the vibration sensor 7 to obtain the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire and send them to the remote server.

[0171] The data processing device of the power transmission line ground wire wind vibration sensing device is used to process the surface pressure of the ground wire collected by the pressure sensor 6 and the vibration acceleration of the ground wire collected by the vibration sensor 7 to obtain the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire and send them to the remote server, including:

[0172] The data acquisition module of the integrated circuit 8 in the data processing device collects the surface pressure of the ground wire measured by the pressure sensor 6 and the vibration acceleration of the ground wire measured by the vibration sensor 7.

[0173] The CPU calculation module of the integrated circuit 8 calculates the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire according to the surface pressure of the ground wire measured by the pressure sensor 6 and the vibration acceleration of the ground wire measured by the vibration sensor 7.

[0174] The storage module of the integrated circuit 8 acquires and stores the ground wire surface pressure measured by the pressure sensor 6, the ground wire vibration acceleration measured by the vibration sensor 7, and the ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain calculated by the CPU calculation module.

[0175] The communication module of the integrated circuit 8 regularly sends the data in the storage module to a remote server.

[0176] The ground wire aerodynamic force includes: ground wire axial unit length average resistance and ground wire axial unit length average lift.

[0177] The calculation formula of the ground wire axial unit length average resistance is as follows:

[0178]

[0179] In the formula, F D is the ground wire axial unit length average resistance, P i (t) is the point pressure time history at measuring point i, N is the total number of spanwise measuring points, T is the total sampling time, n is the included angle between the center line of measuring point i and measuring point i-1 and the center line of measuring point i and measuring point i+1, r is the radius of the circumscribed circle of the ground wire (m), and θ is the angle of measuring point i.

[0180] The calculation formula of the ground wire axial unit length average lift is as follows:

[0181]

[0182] In the formula, F f is the ground wire axial unit length average lift, P i (t) is the point pressure time history at measuring point i, N is the total number of spanwise measuring points, T is the total sampling time, n is the included angle between the center line of measuring point i and measuring point i-1 and the center line of measuring point i and measuring point i+1, r is the radius of the circumscribed circle of the ground wire (m), and θ is the angle of measuring point i.

[0183] The calculation formula of the dynamic bending strain of the ground wire is as follows:

[0184]

[0185] In the formula, ε is the dynamic bending strain of the ground wire at the suspension clamp and the damping weight clamp; H is the running tension of the ground wire; EI min is the minimum bending stiffness of the ground wire; a represents the distance of the vibration sensor from the outlet of the clamp; d is the outermost strand diameter of the ground wire; and A is the relative amplitude value measured by the instrument.

[0186] The vibration sensor 7 adopts a 9-axis MEMS vibration sensor composed of an accelerometer, a gyroscope or a magnetic sensor.

[0187] Specifically, the device is installed on the ground wire in correspondence with the size of the ground wire.

[0188] The pressure sensor built in the device is used to measure the surface pressure of the ground wire, the vibration sensor built in the device is used to measure the vibration acceleration of the ground wire, the collection unit is used to collect, and the storage unit is used to store.

[0189] The CPU calculation module is embedded with an algorithm, which is used to calculate the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire, and the calculation results are stored in the storage unit.

[0190] A threshold value is set in the dynamic bending strain algorithm in advance, and when the threshold value is exceeded, a pre-warning information is automatically sent to a remote server.

[0191] The communication module built in the device is used to regularly pack and send the original measurement data and the calculation results to the remote server.

[0192] The method overcomes the synchronous measurement technology of the surface pressure and vibration amplitude of the ground wire, realizes the edge analysis and pre-warning evaluation of the aerodynamic load, vibration response, wake vortex shedding characteristics and ground wire sag, and compared with the traditional device which only monitors the vibration response, the device realizes the synchronous monitoring and pre-warning evaluation of the ground wire sag, ground wire aerodynamic load and wind vibration, and provides more complete basic data for the wind vibration disaster pre-warning, state evaluation, risk evaluation and life prediction of the ground wire of the power transmission line.

[0193] Embodiment 3

[0194] The application provides a wind vibration pre-warning device for a power transmission line, as shown in the accompanying drawings, which comprises a wire clamp 1 in a hollow cylindrical structure, a vibration sensor 7 and a plurality of pressure sensors 6 arranged in the wire clamp 1, and a data processing device. Figure 1

[0195] The wire clamp 1 is hung on the ground wire of the power transmission line.

[0196] The wire clamp 1 is connected with the data processing device.

[0197] The vibration sensor 7 and the plurality of pressure sensors 6 are in communication connection with the data processing device.

[0198] ​The data processing device processes the ground wire surface pressure collected by the pressure sensor 6 and the ground wire vibration acceleration collected by the vibration sensor 7 to obtain the ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain; is also used for judging whether the ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain exceed the set threshold value, and generating an alarm signal when exceeding; is also used for sending the ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain data to a remote server or sending the ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain data and the alarm signal to the remote server.

[0199] The device not only realizes the synchronous monitoring of the ground wire sag, ground wire aerodynamic load and wind vibration, provides complete basic data for the wind vibration disaster warning of the ground wire of the power transmission line, but also alarms when the ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain exceed the threshold value, and reduces the damage of the ground wire.

[0200] Embodiment 4

[0201] The application provides a wind vibration warning method for a power transmission line, as shown in the figure, comprising the following steps: Figure 5

[0202] The wind vibration intelligent sensing and warning device for the ground wire of the power transmission line is installed on the ground wire of the power transmission line;

[0203] The pressure sensor 6 arranged in the wire clamp 1 of the wind vibration sensing device for the ground wire of the power transmission line is used to measure the ground wire surface pressure and the vibration sensor 7 is used to measure the ground wire vibration acceleration;

[0204] The data processing device of the wind vibration sensing device for the ground wire of the power transmission line is used to process the ground wire surface pressure collected by the pressure sensor 6 and the ground wire vibration acceleration collected by the vibration sensor 7 to obtain the ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain;

[0205] The data processing device is used to judge whether the ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain exceed the set threshold value, and generate an alarm signal when exceeding;

[0206] The data processing device sends the ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain data to a remote server or sends the ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain data and the alarm signal to the remote server.

[0207] The method not only realizes the synchronous monitoring of the ground wire sag, ground wire aerodynamic load and wind vibration, provides complete basic data for the wind vibration disaster warning of the ground wire of the power transmission line, but also alarms when the ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain exceed the threshold value, and reduces the damage of the ground wire. ​

[0208] Those skilled in the art will appreciate that embodiments of the present application can be readily used as a method, apparatus, or computer program product. Accordingly, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application can take the form of a computer program product on one or more computer readable storage media (including, but not limited to, disk memory, CD-ROMs, optical storage devices, etc.) embodying computer readable program code.

[0209] The present application is described in reference to the flowchart illustrations and / or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processing system or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart illustrations and / or block diagrams block or blocks. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams block or blocks. Figure 1 means for carrying out each of the one or more functions specified in the flowchart illustrations and / or block diagrams block or blocks.

[0210] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the flowchart illustrations and / or block diagrams block or blocks. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams block or blocks. Figure 1 means for carrying out each of the one or more functions specified in the flowchart illustrations and / or block diagrams block or blocks.

[0211] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the flowchart illustrations and / or block diagrams block or blocks. Figure 1 one or more functions specified in the flowchart illustrations and / or block diagrams block or blocks. Figure 1 means for carrying out each of the one or more functions specified in the flowchart illustrations and / or block diagrams block or blocks.

[0212] The foregoing is merely illustrative of the principles of this application and various modifications can be made by those skilled in the art without departing from the scope and spirit of the application. The above specification, examples and data provide a complete description of the manufacture and use of the composition of the application. The specification describes only one or preferred embodiments. However, working examples can be modified or varied and equivalents employed without departing from the scope and spirit of the application that is described in the claims.

Claims

1. A galloping vibration sensing device for a power transmission line, characterized by The utility model relates to a kind of line clamp (1) of hollow cylindrical structure, vibration sensor (7) and multiple pressure sensors (6) are arranged in the line clamp (1) and data processing device; The line clamp (1) is hung on the ground wire of transmission line; The line clamp (1) is connected with the data processing device; The vibration sensor (7) and multiple pressure sensors (6) are connected with the data processing device in communication; The data processing device processes the ground wire surface pressure collected by pressure sensor (6) and the ground wire vibration acceleration collected by vibration sensor (7) to obtain ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain and send to remote server; The line clamp (1) cross section is circular ring structure, wherein inner ring diameter matches the outer diameter of ground wire, multiple pressure measuring holes (3) are provided on outer ring, the vibration sensor (7) and multiple pressure sensors (6) are arranged between inner ring and outer ring, and each pressure sensor (6) corresponds to a pressure measuring hole (3), and the vibration sensor (7) is arranged close to inner ring; The ground wire aerodynamic force includes: wire axial unit length average resistance and wire axial unit length average lift; The calculation formula of the wire axial unit length average resistance is as follows: The calculation formula of the wire axial unit length average lift is as follows: where F D is the average resistance per unit length of the wire axis, P i (t) is the pressure time history at measuring point i, N is the total number of measuring points in the spanwise direction, T is the total sampling time, n is the angle between the centerline of measuring point i and measuring point i-1 and the centerline of measuring point i and measuring point i+1, r is the radius of the wire circumscribed circle, and θ is the angle of measuring point i. The calculation formula of the dynamic bending strain of the ground wire is as follows: where F f is the average lift per unit length of the wire axis, P i (t) is the measured pressure time history at measurement point i; The line clamp (1) further includes: waterproof air-permeable membrane and silica gel structure part; where ε is the dynamic bending strain of the conductor at the suspension clamp or the damper clamp; H is the conductor operating tension; EI is the minimum bending stiffness of the conductor; a is the distance from the vibration sensor to the exit of the clamp; d is the outermost strand diameter of the conductor; A is the relative amplitude value measured by the instrument; and P = (H / EI) a / d min min 0.5 ;​​ The waterproof air-permeable membrane is fixedly connected, and the pressure sensor (6) is connected with the waterproof air-permeable membrane through the silica gel structure part; The line clamp (1) further includes: elastic protective layer (5); The elastic protective layer (5) is arranged between the inner ring and the ground wire; The elastic protective layer (5) is made of anti-aging and corrosion-resistant elastic material, and an aluminum alloy template is embedded in the elastic protective layer (5). The data processing device includes: suspension box (2), integrated circuit (8), battery (9) and solar cell panel (10); 2. A galloping vibration sensing device for a power transmission line as defined in claim 1, wherein The suspension box (2) is a hollow cylindrical structure, the solar cell panel (10) is fixed on the outer surface of the cylindrical structure, and the integrated circuit (8) and the battery (9) are arranged in the cylindrical structure; The line clamp (1) is fixedly connected with the suspension box (2); The integrated circuit (8) is connected with the pressure sensor (6) and the vibration sensor (7) in communication, for processing the ground wire surface pressure collected by the pressure sensor (6) and the ground wire vibration acceleration collected by the vibration sensor (7) to obtain the ground wire aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain and send to remote server; The integrated circuit (8) is connected with the battery (9); The battery (9) is connected with the solar cell panel (10). The integrated circuit (8) includes: data acquisition module, CPU calculation module, storage module and communication module; 3. A galloping vibration sensing device for a power transmission line as defined in claim 2, wherein The data acquisition module, CPU calculation module and communication module are connected with the storage module. ​ The data acquisition module is connected with the pressure sensor (6) and the vibration sensor (7), and the surface pressure of the ground wire measured by the pressure sensor (6) and the vibration acceleration of the ground wire measured by the vibration sensor (7) are acquired. The CPU calculation module calculates the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire according to the surface pressure of the ground wire measured by the pressure sensor (6) and the vibration acceleration of the ground wire measured by the vibration sensor (7). The storage module acquires and stores the surface pressure of the ground wire measured by the pressure sensor (6), the vibration acceleration of the ground wire measured by the vibration sensor (7), and the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire calculated by the CPU calculation module. The communication module sends the data in the storage module to a remote server.

4. A galloping vibration sensing device for a power transmission line as recited in claim 1, characterized by The vibration sensor (7) is a 9-axis MEMS vibration sensor composed of an accelerometer, a gyroscope or a magnetic sensor.

5. A galloping vibration sensing device for a power transmission line as recited in claim 1, characterized by, The wire clamp (1) further comprises a bolt and a rotating shaft (11). The bolt and the rotating shaft (11) are arranged between the inner ring and the outer ring of the circular ring structure, and the hollow cylindrical structure is divided into two parts along the radial direction, one end is connected by a bolt, and the other end is connected by a rotating shaft (11).

6. A galloping vibration sensing device for a power transmission line as recited in claim 2, characterized by The surface of the integrated circuit (8) is provided with a nano-hydrophobic coating.

7. A galloping vibration sensing device for a power transmission line as recited in claim 3, characterized by Further comprising: The connecting piece (4) of the hollow structure and the connecting wire arranged in the hollow structure; The wire clamp (1) is connected with the suspension box (2) through the connecting piece (4); The data acquisition module is connected with the pressure sensor (6) and the vibration sensor (7) through the connecting wire arranged in the hollow structure.

8. A galloping vibration sensing device for a power transmission line as defined in claim 1, wherein The number of the pressure measuring holes (3) is not less than 8.

9. A galloping vibration sensing device for a power transmission line as defined in claim 1, wherein The inner diameter of the pressure measuring hole (3) is set according to the size of the pressure sensor (6) and cannot be greater than 1mm.

10. A galloping vibration sensing device for a power transmission line as defined in claim 1, wherein The material of the wire clamp (1) is anodized aluminum or stainless steel alloy.

11. A galloping vibration sensing device for a power transmission line as claimed in any one of claims 1 to 10, wherein, The angles of the device are all arc structures and are treated to prevent corona.

12. A method of sensing aeolian vibration of a power transmission line, the method comprising: Including: The transmission line ground wire wind vibration intelligent sensing device is installed on the ground wire of the transmission line; The surface pressure of the ground wire measured by the pressure sensor (6) and the vibration acceleration of the ground wire measured by the vibration sensor (7) are measured by the pressure sensor (6) arranged in the wire clamp (1) of the transmission line ground wire wind vibration sensing device; The data processing device of the transmission line ground wire wind vibration sensing device processes the surface pressure of the ground wire collected by the pressure sensor (6) and the vibration acceleration of the ground wire collected by the vibration sensor (7) to obtain the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire and sends them to a remote server; The data processing device of the transmission line ground wire wind vibration sensing device processes the surface pressure of the ground wire collected by the pressure sensor (6) and the vibration acceleration of the ground wire collected by the vibration sensor (7) to obtain the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire and sends them to a remote server, including: The data acquisition module of the integrated circuit (8) in the data processing device acquires the surface pressure of the ground wire measured by the pressure sensor (6) and the vibration acceleration of the ground wire measured by the vibration sensor (7). The CPU computing module of the integrated circuit (8) calculates the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire according to the ground wire surface pressure measured by the pressure sensor (6) and the ground wire vibration acceleration measured by the vibration sensor (7); The storage module of the integrated circuit (8) acquires and stores the ground wire surface pressure measured by the pressure sensor (6), the ground wire vibration acceleration measured by the vibration sensor (7) and the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire calculated by the CPU computing module; The communication module of the integrated circuit (8) regularly sends the data in the storage module to a remote server; The aerodynamic force of the ground wire includes: the average resistance per unit length of the ground wire in the axial direction and the average lift per unit length of the ground wire in the axial direction; The calculation formula of the average resistance per unit length of the ground wire in the axial direction is as follows: where F D is the average resistance per unit length of the wire axis, P i (t) is the time history of the measured point pressure at the measured point i, N is the total number of measured points in the spanwise direction, T is the total sampling time, n is the angle between the centerline of the measured point i and the measured point i-1 and the centerline of the measured point i and the measured point i+1, r is the radius of the circumscribed circle of the wire, and θ is the angle of the measured point i. The calculation formula of the average lift per unit length of the ground wire in the axial direction is as follows: In the formula, F f is the average lift per unit length of the wire axis The calculation formula of the dynamic bending strain of the ground wire is as follows: where ε is the dynamic bending strain of the conductor at the suspension clamp or the damper clamp; H is the conductor operating tension; EI is the minimum bending stiffness of the conductor; a is the distance from the vibration sensor to the exit of the clamp; d is the outermost strand diameter of the conductor; A is the relative amplitude value measured by the instrument; and P = (H / EI min min 0.5 ;​​ The transmission line ground wire aeolian vibration sensing device is the transmission line aeolian vibration sensing device according to any one of claims 1-10.

13. A device for the early warning of aeolian vibrations of a power transmission line, characterized in that it comprises: Comprise: The line clamp (1) of the hollow cylindrical structure, the vibration sensor (7) and the plurality of pressure sensors (6) arranged in the line clamp (1) and the data processing device; The line clamp (1) is hung on the ground wire of the transmission line; The line clamp (1) is connected with the data processing device; The vibration sensor (7) and the plurality of pressure sensors (6) are in communication connection with the data processing device; The data processing device processes the ground wire surface pressure collected by the pressure sensor (6) and the ground wire vibration acceleration collected by the vibration sensor (7) to obtain the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire; also used for judging whether the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire exceed the set threshold value, and generating an alarm signal when exceeding; also used for sending the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain data of the ground wire to a remote server or for sending the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain data and the alarm signal of the ground wire to a remote server; The cross section of the line clamp (1) is a circular ring structure, wherein the inner ring diameter matches the outer diameter of the ground wire, a plurality of pressure measuring holes (3) are arranged on the outer ring, the vibration sensor (7) and the plurality of pressure sensors (6) are arranged between the inner ring and the outer ring, each pressure sensor (6) corresponds to a pressure measuring hole (3), and the vibration sensor (7) is arranged close to the inner ring; The aerodynamic force of the ground wire includes: the average resistance per unit length of the ground wire in the axial direction and the average lift per unit length of the ground wire in the axial direction; The calculation formula of the average resistance per unit length of the ground wire in the axial direction is as follows: where F D is the average resistance per unit length of the wire axis, P i (t) is the measured point pressure time history at the measuring point i, N is the total number of measuring points in the spanwise direction, T is the total sampling time, n is the angle between the centerline of measuring point i and measuring point i-1 and the centerline of measuring point i and measuring point i+1, r is the radius of the wire circumscribed circle, and θ is the angle of measuring point i. The calculation formula of the average lift per unit length of the ground wire in the axial direction is as follows: In the formula, F f is the average lift per unit length of the wire axis The calculation formula of the dynamic bending strain of the ground wire is as follows: where ε is the dynamic bending strain of the conductor at the suspension clamp or the damper clamp; H is the conductor operating tension; EI is the minimum bending stiffness of the conductor; a is the distance from the vibration sensor to the exit of the clamp; d is the outermost strand diameter of the conductor; A is the relative amplitude value measured by the instrument; and P = (H / EI min min 0.5 ;​​ The line clamp (1) further comprises: a waterproof and breathable membrane and a silica gel structure; The pressure sensor (6) is connected with the waterproof and breathable membrane through the silica gel structure; The line clamp (1) further comprises: an elastic protective layer (5); The elastic protective layer (5) is arranged between the inner ring and the ground wire; The elastic protective layer (5) is made of an anti-aging and anti-corrosion elastic material, and an aluminum alloy plate is embedded in the elastic protective layer (5).

14. A method of alerting to aeolian vibration of a power transmission line, characterized by, Comprise: The power transmission line ground wire wind vibration intelligent early warning device is installed on the ground wire of the power transmission line; The pressure sensor (6) arranged in the wire clamp (1) of the power transmission line ground wire wind vibration sensing device is used to measure the surface pressure of the ground wire and the vibration sensor (7) is used to measure the vibration acceleration of the ground wire; The data processing device of the power transmission line ground wire wind vibration sensing device processes the surface pressure of the ground wire collected by the pressure sensor (6) and the vibration acceleration of the ground wire collected by the vibration sensor (7) to obtain the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire; The data processing device judges whether the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire exceed the set threshold value, and generates an alarm signal when they exceed the set threshold value; The data processing device sends the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain data of the ground wire to a remote server or sends the aerodynamic force, vibration displacement, vibration frequency, dynamic bending strain data and alarm signal of the ground wire to a remote server; The data processing device of the power transmission line ground wire wind vibration sensing device processes the surface pressure of the ground wire collected by the pressure sensor (6) and the vibration acceleration of the ground wire collected by the vibration sensor (7) to obtain the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire and sends them to a remote server, comprising: The data acquisition module of the integrated circuit (8) in the data processing device acquires the surface pressure of the ground wire measured by the pressure sensor (6) and the vibration acceleration of the ground wire measured by the vibration sensor (7); The CPU calculation module of the integrated circuit (8) calculates the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire according to the surface pressure of the ground wire measured by the pressure sensor (6) and the vibration acceleration of the ground wire measured by the vibration sensor (7); The storage module of the integrated circuit (8) acquires and stores the surface pressure of the ground wire measured by the pressure sensor (6), the vibration acceleration of the ground wire measured by the vibration sensor (7) and the aerodynamic force, vibration displacement, vibration frequency and dynamic bending strain of the ground wire calculated by the CPU calculation module; The communication module of the integrated circuit (8) regularly sends the data in the storage module to a remote server; The aerodynamic force of the ground wire includes: the average resistance per unit length of the wire in the axial direction and the average lift per unit length of the wire in the axial direction; The calculation formula of the average resistance per unit length of the wire in the axial direction is as follows: where F D is the average resistance per unit length of the wire axis, P i (t) is the measured point pressure time history at point i, N is the total number of spanwise measured points, T is the total sampling time, n is the angle between the centerline of point i and point i-1 and the centerline of point i and point i+1, r is the radius of the wire circumscribed circle, and θ is the angle of point i. The calculation formula of the average lift per unit length of the wire in the axial direction is as follows: In the formula, F f is the average lift per unit length of the wire axis The calculation formula of the dynamic bending strain of the ground wire is as follows: In the formula, ε is the dynamic bending strain of the wire at the suspension clamp and the wire clamp of the damper; H is the running tension of the wire; EI min The minimum bending stiffness of the wire; a represents the distance of the vibration sensor from the wire clamp outlet; d is the diameter of the outermost strand of the wire; A is the relative amplitude value measured by the instrument; P = (H / EI min ) 0.5 ; The power transmission line ground wire wind vibration intelligent early warning device is the power transmission line wind vibration early warning device as claimed in claim 13.

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