Power-supply-free power transmission line galloping monitoring device and method

Abstract

The invention relates to a power-supply-free power transmission line galloping monitoring device and method. The power-supply-free power transmission line galloping monitoring device comprises an upper shell, a lower shell, a vertical motion monitoring box and a horizontal motion monitoring box. The upper shell and the lower shell are configured to be jointly clamped on the overhead line, and the upper shell and the lower shell are mutually fixed under the state that the upper shell and the lower shell are jointly clamped on the overhead line; the vertical motion monitoring box and the horizontal motion monitoring box are arranged on at least one of the upper shell and the lower shell, and the vertical motion monitoring box and the horizontal motion monitoring box are configured to carry out galloping monitoring on the overhead line from two directions; elastic pieces, piezoelectric ceramics and pressure sensors are arranged in box bodies of the vertical motion monitoring box and the horizontal motion monitoring box, the two side faces of each pressure sensor are connected with the two piezoelectric ceramics respectively, and each piezoelectric ceramic is elastically connected with the corresponding box body through one elastic piece; the pressure sensor is configured to transmit a pressure signal. The device is simple in structure, is convenient to carry and install, and does not need an extra power supply.

Description

Technical Field

[0001] The present application relates to the field of power grid overhead line monitoring, and in particular to a device and method for monitoring the vibration of power transmission lines without power supply. Background Art

[0002] Overhead line galloping is a vibration phenomenon caused by overhead wires under wind excitation. Galloping is more likely to occur when the overhead lines are covered with ice. As the construction scale of power grid overhead lines continues to expand, the operating environment of overhead lines has become increasingly diverse, and they are severely affected by overhead line galloping.

[0003] The galloping of overhead wires is characterized by low frequency, large amplitude, and long duration. The impact is particularly serious when the overhead lines are covered with ice, which can easily cause faults such as broken wires, damaged hardware, and flashing of overhead lines. In severe cases, even accidents such as pole tower collapse may occur, which will have a serious impact on the entire power system. Summary of the invention

[0004] Based on this, it is necessary to provide a device and method for monitoring the vibration of a power transmission line without a power supply.

[0005] In one embodiment, a non-powered transmission line galloping monitoring device includes an upper shell, a lower shell, a vertical motion monitoring box, and a horizontal motion monitoring box;

[0006] The upper shell and the lower shell are configured to be clamped together on the overhead line, and in a state of being clamped together on the overhead line, the upper shell and the lower shell are fixed to each other;

[0007] The vertical movement monitoring box and the horizontal movement monitoring box are arranged on at least one of the upper shell and the lower shell, and the vertical movement monitoring box and the horizontal movement monitoring box are configured to monitor the dancing of the overhead line from two directions;

[0008] The vertical motion monitoring box and the horizontal motion monitoring box are both provided with elastic parts, piezoelectric ceramics and pressure sensors, the two sides of the pressure sensor are respectively connected to the two piezoelectric ceramics, and each piezoelectric ceramic is elastically connected to the box through an elastic part;

[0009] The pressure sensor is configured to send a pressure signal.

[0010] The above-mentioned power-free transmission line dancing monitoring device, through the coordinated design of the upper shell, the lower shell, the vertical movement monitoring box and the horizontal movement monitoring box, has the advantages of simple structure, easy to carry, easy to install and no need for additional power supply. The vertical movement monitoring box and the horizontal movement monitoring box realize dancing monitoring from two dimensions and send the monitoring results in the form of pressure signals. Therefore, it can solve the problem of overhead transmission line dancing warning in a low-cost, long-term and effective manner, and can detect the dancing displacement and angle of the overhead wire, thereby improving the stability of the operation of the overhead transmission line.

[0011] In one embodiment, the vertical motion monitoring box is configured to monitor the galloping of the overhead line from a first direction, and the horizontal motion monitoring box is configured to monitor the galloping of the overhead line from a second direction; wherein,

[0012] The first direction and the second direction are both perpendicular to the extension direction of the overhead line, and the first direction and the second direction are arranged differently.

[0013] In one embodiment, the first direction and the second direction are perpendicular to each other.

[0014] In one embodiment, the first direction is a vertical direction, and the second direction is a horizontal direction.

[0015] In one embodiment, the elastic member is a spring or an elastic block; or,

[0016] When the upper shell and the lower shell are fixed to each other, the upper shell and the lower shell together form a cylindrical body; or,

[0017] The vertical motion monitoring box and the horizontal motion monitoring box are both arranged on the upper shell or the lower shell.

[0018] In one of the embodiments, the non-powered power transmission line dancing monitoring device further includes a self-locking mechanism, and the upper shell and the lower shell are fixed to each other through the self-locking mechanism.

[0019] In one of the embodiments, the self-locking mechanism includes an elastic snap-fitting piece, and when the upper shell and the lower shell are fixed to each other through the self-locking mechanism, the elastic snap-fitting piece undergoes elastic deformation to achieve self-locking.

[0020] In one embodiment, a method for monitoring the galloping of a power transmission line without power supply comprises the steps of:

[0021] A non-power transmission line sway monitoring device is pre-installed on the overhead line, wherein the non-power transmission line sway monitoring device has a vertical motion monitoring box and a horizontal motion monitoring box;

[0022] Using a vertical motion monitoring box to monitor the dancing of the overhead line from a first direction, and sending a first pressure signal to a detection system;

[0023] Calculate, according to the first pressure signal, a first displacement of the vertical motion monitoring box in the first direction as the first displacement of the power transmission line dancing monitoring device without power supply in the first direction;

[0024] A horizontal motion monitoring box is used to monitor the dancing of the overhead line from a second direction, and a second pressure signal is sent to the detection system;

[0025] Calculate the second displacement of the overhead line of the horizontal motion monitoring box in the second direction according to the second pressure signal as the second displacement of the power transmission line dancing monitoring device without power supply in the second direction;

[0026] An overall displacement vector of the non-power transmission line galloping monitoring device is calculated according to the first displacement in the first direction and the second displacement in the second direction.

[0027] In one of the embodiments, in the method for monitoring the dancing of a power transmission line without power supply, the first direction and the second direction are perpendicular to each other.

[0028] In one embodiment, in the method for monitoring the galloping of a power transmission line without power supply, the first direction is a vertical direction, and the second direction is a horizontal direction; and / or,

[0029] The method for monitoring the galloping of a power transmission line without power supply further comprises the step of: issuing an alarm signal when the overall displacement vector exceeds a preset threshold. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology 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 creative work.

[0031] Figure 1 This is a schematic diagram of the application environment of the power transmission line sway monitoring device without power supply described in this application.

[0032] Figure 2 It is a structural schematic diagram of an embodiment of a non-power supply transmission line sway monitoring device described in this application.

[0033] Figure 3 for Figure 2 Schematic diagram of the application of the illustrated embodiment.

[0034] Figure 4 for Figure 2Schematic diagram of vertical motion monitoring of the illustrated embodiment.

[0035] Figure 5 for Figure 2 Schematic diagram of horizontal motion monitoring of the illustrated embodiment.

[0036] Figure 6 This is a piezoelectric ceramic excitation force-time curve diagram of another embodiment of the power transmission line dancing monitoring device without power supply described in the present application.

[0037] Figure 7 for Figure 6 The illustrated embodiment is a schematic diagram of synthesizing vertical and horizontal motions within the xoy plane.

[0038] Figure 8 for Figure 2 A partial structural diagram of the self-locking mechanism of the illustrated embodiment.

[0039] Fig. 9 for Figure 2 A schematic structural diagram of the remaining parts of the self-locking mechanism of the illustrated embodiment.

[0040] Fig.10 It is a flow chart of an embodiment of a method for monitoring the galloping of a power transmission line without power supply described in the present application.

[0041] Figure numerals: 1-wire; 2-upper shell; 3-lower shell; 4-vertical motion monitoring box; 5-horizontal motion monitoring box; 6-piezoelectric ceramic; 7-pressure sensor; 8-elastic member; 9-self-locking mechanism upper structure; 10-self-locking mechanism lower structure. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0043] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0047] The present application discloses a device and method for monitoring the pulsation of a power transmission line without power supply, which include some or all of the technical features of the following embodiments; as an example, the device and method for monitoring the pulsation of a power transmission line without power supply include some or all of the following structures. In one embodiment of the present application, a power transmission line dancing monitoring device without power supply includes an upper shell, a lower shell, a vertical motion monitoring box and a horizontal motion monitoring box; the upper shell and the lower shell are configured to be clamped together on the overhead line, and in the state of being clamped together on the overhead line, the upper shell and the lower shell are fixed to each other; the vertical motion monitoring box and the horizontal motion monitoring box are arranged on at least one of the upper shell and the lower shell, and the vertical motion monitoring box and the horizontal motion monitoring box are configured to monitor the dancing of the overhead line from two directions; the vertical motion monitoring box and the horizontal motion monitoring box are provided with elastic parts, piezoelectric ceramics and pressure sensors in the box bodies, and the two sides of the pressure sensor are respectively connected to two piezoelectric ceramics, and each piezoelectric ceramic is elastically connected to the box body through an elastic part; the pressure sensor is configured to send a pressure signal. The above-mentioned power transmission line dancing monitoring device without power supply has the advantages of simple structure, easy to carry, convenient installation and no need for additional power supply through the coordinated design of the upper shell, the lower shell, the vertical movement monitoring box and the horizontal movement monitoring box. The vertical movement monitoring box and the horizontal movement monitoring box realize dancing monitoring from two dimensions and send the monitoring results in the form of pressure signals. Therefore, it can solve the problem of transmission overhead line dancing warning in a low-cost, long-term and effective manner, and can detect the dancing displacement and angle of the overhead conductor, thereby improving the stability of the operation of the transmission overhead line. Figures 1 to 10 , the power-free transmission line dancing monitoring device and method are described in detail.

[0048] Transmission line galloping is a low-frequency, large-amplitude self-excited vibration of overhead lines, i.e., conductors, which has the characteristics of violent swings and long duration. The application environment of the non-power transmission line galloping monitoring device described in each embodiment of the present application is as follows: Figure 1As shown in the figure, taking the dancing of an overhead line suspended by the lowest cross arm as an example, the position of the overhead line will deviate significantly at a certain moment after the dancing. Because the overhead line is under the action of the tension of the iron towers on both sides, the movement in the X direction, i.e., the extension direction of the overhead line, is constrained when the dancing occurs, so the dancing of the transmission line overhead line mainly occurs in other directions perpendicular to the extension direction, i.e., the X direction. In one of the embodiments, a non-powered transmission line dancing monitoring device comprises an upper shell, a lower shell, a vertical motion monitoring box and a horizontal motion monitoring box; as an example, the upper shell and the lower shell are used to fix the non-powered transmission line dancing monitoring device on an overhead line, and the vertical motion monitoring box and the horizontal motion monitoring box are respectively used to monitor the displacement in two directions, so as to determine the dancing degree of the overhead line at the position where the non-powered transmission line dancing monitoring device is located; illustratively, the upper shell and the lower shell cooperate to fix the non-powered transmission line dancing monitoring device at the middle position of the overhead line between two pole towers, as an example, fixed at a position where the length of the overhead line between the two pole towers is 50%, so as to obtain information on the maximum possibility of dancing.

[0049] In each embodiment, the upper shell and the lower shell are configured to be clamped together on the overhead line, and in the state of being clamped together on the overhead line, the upper shell and the lower shell are fixed to each other; in one embodiment, in the state of the upper shell and the lower shell being fixed to each other, the upper shell and the lower shell together form a cylindrical body. In one embodiment, in the state of the upper shell and the lower shell being fixed to each other, the upper shell and the lower shell together form a cylindrical body, and the vertical motion monitoring box and the horizontal motion monitoring box are both arranged on the upper shell or the lower shell. The remaining embodiments are similar and will not be described in detail. Such a design is suitable for directly assembling the upper shell and the lower shell from the periphery of the overhead line, that is, assembling the non-powered transmission line dancing monitoring device, so that the non-powered transmission line dancing monitoring device is easy to install and maintain under the premise of simple structure and easy to carry; and because the structure is simple and easy to use, the maintenance workload is relatively small.

[0050] In each embodiment, the vertical motion monitoring box and the horizontal motion monitoring box are arranged on at least one of the upper shell and the lower shell, and the vertical motion monitoring box and the horizontal motion monitoring box are configured to monitor the dancing of the overhead line from two directions; that is, the vertical motion monitoring box and the horizontal motion monitoring box are arranged on the upper shell or the lower shell; as an example, the vertical motion monitoring box and the horizontal motion monitoring box are both arranged on the upper shell, or the vertical motion monitoring box and the horizontal motion monitoring box are both arranged on the lower shell, or the vertical motion monitoring box is arranged on the upper shell and the horizontal motion monitoring box is arranged on the lower shell, or the vertical motion monitoring box is arranged on the lower shell and the horizontal motion monitoring box is arranged on the upper shell. Exemplarily, the vertical motion monitoring box and the horizontal motion monitoring box are protruding from at least one of the upper shell and the lower shell. Such a design can realize dancing monitoring from two dimensions through the vertical motion monitoring box and the horizontal motion monitoring box, thereby ensuring the stability and effectiveness of monitoring, and can provide timely and effective monitoring information on the dancing state of the overhead line, especially the large dancing state.

[0051] As an example, although the vertical motion monitoring box and the horizontal motion monitoring box are called boxes, their volumes can actually be very small, similar to a small box. In order to prevent the adjacent overhead lines from dancing too much and causing a collision with the adjacent power transmission line dancing monitoring device without power supply, illustratively, the power transmission line dancing monitoring device also includes a protective cover arranged outside the upper shell and the lower shell, and the protective cover also wraps the vertical motion monitoring box and the horizontal motion monitoring box; in order to facilitate the installation of the protective cover, illustratively, the protective cover is a foam belt, which is wrapped around the upper shell, the vertical motion monitoring box, the horizontal motion monitoring box and the lower shell in a winding manner; this is because the upper shell and the lower shell have to be removed from the overhead line jacket and then assembled, so they cannot be directly covered on the upper shell and the lower shell; in addition, after aging testing, the normal service life of the protective cover wrapped around the upper shell exceeds 10 years, which theoretically meets the use requirements. If the protective cover is not used, as an alternative, the adjacent non-powered transmission line dance monitoring devices can be staggered, that is, not all placed in the middle of the overhead line between two towers, one in front and the other in the back, staggered in sequence. However, this underestimates the maximum dance degree of the overhead line, which needs to be appropriately compensated in the calculation.

[0052] In each embodiment, the vertical motion monitoring box and the horizontal motion monitoring box are provided with elastic parts, piezoelectric ceramics and pressure sensors in the box body, and the two sides of the pressure sensor are respectively connected to the two piezoelectric ceramics, and each piezoelectric ceramic is elastically connected to the box body through an elastic part; the pressure sensor is configured to send a pressure signal. That is, in each box body of the vertical motion monitoring box and the horizontal motion monitoring box, there is a pressure sensor, two piezoelectric ceramics and two elastic parts, each side of the pressure sensor is connected to a piezoelectric ceramic, and the two sides are connected to two piezoelectric ceramics. When the elastic pressure of the elastic part reaches a certain level, the piezoelectric ceramic discharges and supplies to the pressure sensor, and also transfers the elastic pressure of the elastic part to the pressure sensor, and the pressure sensor sends a pressure signal. In one embodiment, the elastic part is a spring or an elastic block. As an example, when the line dances, the elastic part undergoes elastic deformation, the piezoelectric ceramic is subjected to force to generate current, and power is supplied to the pressure sensor, and the pressure sensor sends a pressure signal to the background detection system. This design does not require additional power supply, can realize dancing monitoring from two directions and send the monitoring results in the form of pressure signals. It can solve the problem of overhead line dancing warning in a low-cost, long-term and effective manner, and can detect the dancing displacement and angle of overhead conductors, thereby improving the stability of overhead line operation.

[0053] In one of the embodiments, the vertical motion monitoring box is configured to monitor the dancing of the overhead line from a first direction, and the horizontal motion monitoring box is configured to monitor the dancing of the overhead line from a second direction; wherein the first direction and the second direction are both perpendicular to the extension direction of the overhead line, and the first direction and the second direction are arranged differently. In one of the embodiments, the first direction and the second direction form an angle of 60 to 90 degrees. In one of the embodiments, the first direction and the second direction are perpendicular to each other; in other embodiments, the first direction and the second direction form an angle of 60, 70 or 80 degrees. In one of the embodiments, the first direction is a vertical direction, and the second direction is a horizontal direction. Figure 1 As shown, the first direction is the Z direction, and the second direction is the Y direction. Such a design, on the one hand, realizes the dancing monitoring from two dimensions and sends the monitoring results as pressure signals, so as to obtain more comprehensive and accurate monitoring results. On the other hand, the embodiment in which the first direction and the second direction are perpendicular to each other is conducive to conveniently calculating the overall displacement vector of the overhead line, so as to accurately determine the dancing degree of the overhead line, and determine whether corresponding contingency measures need to be taken according to the dancing degree of the overhead line.

[0054] Exemplarily, the upper shell and the lower shell are fixed by snap fit, interference fit or screw connection. Considering that there may be a need for quick assembly of the upper shell and the lower shell in special cases, in one of the embodiments, the non-power transmission line dancing monitoring device also includes a self-locking mechanism, and the upper shell and the lower shell are fixed to each other by the self-locking mechanism. In one of the embodiments, the self-locking mechanism includes an elastic snap-fitting part, and when the upper shell and the lower shell are fixed to each other by the self-locking mechanism, the elastic snap-fitting part undergoes elastic deformation to achieve self-locking. Exemplarily, the elastic snap-fitting part includes an enlarged plug end and an elastic snap-fit ​​groove; the enlarged plug end is arranged on one of the upper shell and the lower shell, and the elastic snap-fit ​​groove is arranged on the other of the upper shell and the lower shell; during the process of inserting the enlarged plug end into the elastic snap-fit ​​groove, the elastic snap-fit ​​groove squeezes the elastic snap-fit ​​groove to open the elastic snap-fit ​​groove; when the enlarged plug end is completely inserted into the elastic snap-fit ​​groove, the elastic snap-fit ​​groove elastically resets to lock the enlarged plug end; in this way, the upper shell and the lower shell can be quickly assembled, and in the embodiment where the upper shell and the lower shell jointly form a cylindrical body, since the cylindrical body is subjected to dispersed force in a natural state, after the assembly is completed, unless it is peeled off by manpower, the cooperation between the enlarged plug end and the elastic snap-fit ​​groove can be used for a long time and will not loosen, thereby meeting the design life requirements of the non-powered power transmission line dancing monitoring device.

[0055] From the above examples, it can be seen that in the overhead line area of ​​the ice-covered area, it is very important to monitor the transmission line galloping. In order to achieve the purpose of transmission line galloping monitoring, the following is combined with Figures 1 to 10 , further illustrating the power-free transmission line dancing monitoring device.

[0056] In one embodiment, a non-power transmission line sway monitoring device is Figure 2 As shown, it includes an upper shell 2, a lower shell 3, a vertical motion monitoring box 4, a horizontal motion monitoring box, an elastic member 8, a piezoelectric ceramic 6, a pressure sensor 7 and a self-locking mechanism, combined with Figure 3 The upper shell 2 and the lower shell 3 are two shells with symmetrical appearances, and their inner diameters are the outer diameters of the overhead line 1. The upper shell 2 and the lower shell 3 are respectively connected to the upper and lower structures of a self-locking mechanism. When the upper shell 2 and the lower shell 3 are aligned, the self-locking mechanism will automatically lock and connect the entire mechanism. A vertical motion monitoring box 4 and a horizontal motion monitoring box 5 are arranged on the upper shell 2. With such a design, the non-power transmission line dancing monitoring device has a simple structure, is easy to carry, and is easy to install.

[0057] like Figure 4 and Figure 5As shown, the two monitoring boxes, the vertical motion monitoring box 4 and the horizontal motion monitoring box 5, are both provided with piezoelectric ceramics 6, pressure sensors 7 and elastic members 8, and are connected to the outer wall of the monitoring box in the order of "elastic member 8-pressure sensor 7-piezoelectric ceramics 6-pressure sensor 7-elastic member 8", wherein the vertical motion monitoring box 4 is connected in the vertical direction, and the horizontal motion monitoring box 5 is connected in the horizontal direction. Figure 4 As shown, when moving up and down along the direction shown in the figure, the pressure sensor 7 of the vertical motion monitoring box 4 sends a sensor signal; Figure 5 As shown, when moving up and down along the illustrated direction, the pressure sensor 7 of the horizontal motion monitoring box 5 sends a sensing signal.

[0058] like Figures 1 to 5 As shown, the horizontal motion monitoring box 5 and the vertical motion monitoring box 4 are respectively arranged in the Y and Z directions for motion monitoring. Therefore, the vertical motion monitoring box 4 detects the dancing in the Z direction, and the horizontal motion monitoring box 5 detects the dancing in the Y direction, so that the dancing monitoring can be realized. With such a design, the non-power transmission line dancing monitoring device does not need additional power supply, can solve the transmission line dancing warning problem at low cost and for a long time, and can detect the dancing displacement and angle of the overhead line 1, and improve the stability of the transmission line operation.

[0059] When the overhead line 1 is stable, that is, no dancing occurs, the non-power transmission line dancing monitoring device is not powered on at this time, so the non-power transmission line dancing monitoring device does not work and is only fixed on the overhead line 1.

[0060] When the overhead line 1 moves in the vertical direction, i.e., the Z direction, i.e., dances, the elastic member 8 in the horizontal motion monitoring box 5 will not be deformed by force, but the elastic member 8 in the vertical motion monitoring box 4 will be deformed by force. The piezoelectric ceramic 6 generates current under pressure, and the piezoelectric ceramic 6 supplies power to the pressure sensor 7. At this time, the remote background detection system starts to work, and the pressure sensor 7 transmits the pressure data to the background detection system. At this time, the background detection system receives the vertical force of the overhead line 1 and the background detection system starts to warn. The background detection system obtains the pressure-time curve, i.e., the exciting force-time curve of the piezoelectric ceramic 6, as shown in Figure 6 shown.

[0061] Therefore, for the piezoelectric ceramic 6 and elastic member 8 system, the motion differential equation of the system can be listed as follows:

[0062]

[0063] Wherein, m, c and k are constants or are set according to limiting conditions, P is pressure, and τ is time.

[0064] Under the continuous action of any exciting force P(τ) from instantaneous τ=0 to τ=t, the response of the system is equal to the superposition of the system responses under the continuous action of a series of micro impulses P(τ)dτ from τ=0 to τ=t, and the damping of the system can be ignored, so the vertical displacement formula of the oscillator of elastic member 8 is obtained:

[0065]

[0066] Among them, ω n is the undamped natural frequency of the system.

[0067] When the overhead line 1 only vibrates in the horizontal direction, the horizontal motion monitoring box 5 works, and the working principle is the same as that of the vertical motion monitoring box 4, which will not be described in detail here.

[0068] When the overhead line 1 dances in both directions, the horizontal motion monitoring box 5 and the vertical motion monitoring box 4 both work to monitor the vertical and horizontal displacements of the overhead line 1, respectively, and perform motion synthesis to obtain the displacement size and direction of the dancing motion. The vertical and horizontal motions are synthesized in the xoy plane, such as Figure 7 At any time, the background server can display the spatial displacement x of the overhead line 1 at that time. 总 and the angle θ with the horizontal direction.

[0069]

[0070]

[0071] In this way, no matter in which direction the overhead line 1 dances, as long as the overhead line 1 dances, the monitoring system will start to alarm and work, and the displacement size and angle of the overhead line 1 relative to the initial position at any time can be obtained in the background; in this way, under the premise that the non-powered transmission line dance monitoring device is easy to carry and install, the early warning and monitoring functions of the transmission line dance can be realized for a long time and stably.

[0072] In one embodiment, if Figure 8 and Fig. 9As shown, the self-locking mechanism includes a self-locking mechanism upper structure 9 arranged or connected on the upper shell 2 and a self-locking mechanism lower structure 10 arranged or connected on the lower shell 3, wherein the self-locking mechanism upper structure 9 is a round rod-shaped boss, and the self-locking mechanism lower structure 10 is a double semicircular shell matched with the round rod-shaped boss, and the two semicircular shells are connected to the elastic structure arranged on the lower shell 3, and are connected by a pin, and are rotatably arranged on the lower shell 3, which can also be understood as being arranged in the lower shell 3. When the upper shell 2 and the lower shell 3 are buckled together, the two semicircular shells will be squeezed by the round rod-shaped boss and rotate, so that the round rod-shaped boss enters the two semicircular shells, and the semicircular shells are subjected to the force of the elastic structure. When the round rod-shaped boss completely enters the two semicircular shells, that is, when the upper shell 2 and the lower shell 3 are buckled together, the self-locking mechanism lower structure 10, that is, the two semicircular shells, clamp the round rod-shaped boss under the action of the elastic structure, and the power transmission line dancing monitoring device completes self-locking. In this way, the rapid installation of the non-powered transmission line swaying monitoring device can be achieved, which is particularly suitable for installing the non-powered transmission line swaying monitoring device on overhead transmission lines. Because this is a high-altitude operation, the simplicity and speed of installation are improved, which is beneficial to the operation of front-line construction personnel.

[0073] Based on the non-power transmission line dancing monitoring device, in one of the embodiments, the present application also provides a non-power transmission line dancing monitoring method, which is implemented based on the non-power transmission line dancing monitoring device described in any embodiment, that is, the non-power transmission line dancing monitoring method adopts the non-power transmission line dancing monitoring device described in any embodiment. Since the non-power transmission line dancing monitoring device described in any embodiment is adopted, the non-power transmission line dancing monitoring method also has the beneficial technical effects of the non-power transmission line dancing monitoring device, which will not be elaborated here.

[0074] In one of the embodiments, a method for monitoring the galloping of a power transmission line without power supply comprises the following steps: S10, pre-setting a galloping monitoring device for a power transmission line without power supply on an overhead line, wherein the galloping monitoring device for a power transmission line without power supply has a vertical motion monitoring box and a horizontal motion monitoring box; S20, using the vertical motion monitoring box to monitor the galloping of the overhead line from a first direction, and sending a first pressure signal to a detection system; S30, calculating a first displacement of the vertical motion monitoring box in the first direction according to the first pressure signal, as the first displacement of the galloping monitoring device for the power transmission line without power supply in the first direction; S40, using the horizontal motion monitoring box to monitor the galloping of the overhead line from a second direction, and sending a second pressure signal to the detection system; S50, calculating a second displacement of the overhead line of the horizontal motion monitoring box in the second direction according to the second pressure signal, as the second displacement of the galloping monitoring device for the power transmission line without power supply in the second direction; S60, calculating the overall displacement vector of the galloping monitoring device for the power transmission line without power supply according to the first displacement in the first direction and the second displacement in the second direction.

[0075] In one of the embodiments, in the method for monitoring the dancing of a power transmission line without power supply, the first direction and the second direction are perpendicular to each other. In one of the embodiments, in the method for monitoring the dancing of a power transmission line without power supply, the first direction is a vertical direction and the second direction is a horizontal direction; similar to the embodiment of the device for monitoring the dancing of a power transmission line without power supply, it is not described here. In one of the embodiments, the method for monitoring the dancing of a power transmission line without power supply also includes the step of: when the overall displacement vector exceeds a preset threshold, an alarm signal is issued. Such a design, because the piezoelectric method is used to output the sensor signal as the overhead line dances, no additional power supply is required, and the dancing monitoring is realized from two dimensions through the vertical motion monitoring box and the horizontal motion monitoring box, so it can solve the problem of early warning of the dancing of the power transmission overhead line at low cost, long-term and effectively, especially when the dancing is too large, an alarm signal can be issued, so that preventive measures and emergency plans can be taken in time; it is understandable that when the line is broken, a signal interruption will occur, which should be handled in time.

[0076] The following is an example of the non-power transmission line dancing monitoring method. In one embodiment, Fig.10 The specific instructions are as follows.

[0077] First, the non-powered transmission line dancing monitoring device is used to determine whether the conductor is dancing, that is, the vertical movement monitoring box and the horizontal movement monitoring box are used to determine whether the overhead line is dancing. Otherwise, the system will not work, that is, the background detection system will not trigger an alarm or other processing measures.

[0078] If the conductor dances, it is divided into three situations based on the direction of the dance: only vertical movement, only horizontal movement, and simultaneous movement in both directions.

[0079] When only vertical movement occurs or two-way movement occurs simultaneously, the vertical movement monitoring box works; the vertical displacement of the system is obtained, which can also be called the vertical displacement of the overhead line where the non-powered transmission line dancing monitoring device is located obtained by the background detection system.

[0080] When only horizontal movement occurs or two-way movement occurs simultaneously, the horizontal movement monitoring box works; the horizontal displacement of the system is obtained, which can also be called the horizontal displacement of the overhead line where the non-powered transmission line dancing monitoring device is located by the background detection system.

[0081] Then the displacement synthesis is performed to obtain the size and angle of the total displacement.

[0082] At this point, the steps of the power transmission line sway monitoring method without power supply are completed. If the size and angle of the total displacement, that is, the overall displacement vector, exceeds a preset threshold, an alarm signal may be issued.

[0083] It should be noted that other embodiments of the present application also include a non-power supply transmission line sway monitoring device and method that can be implemented by combining the technical features in the above embodiments.

[0084] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0085] 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 patent 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 scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A non-power transmission line dancing monitoring device, characterized in that: It includes an upper shell, a lower shell, a vertical motion monitoring box and a horizontal motion monitoring box; The upper shell and the lower shell are configured to be clamped together on the overhead line, and in a state of being clamped together on the overhead line, the upper shell and the lower shell are fixed to each other; The vertical movement monitoring box and the horizontal movement monitoring box are arranged on at least one of the upper shell and the lower shell, and the vertical movement monitoring box and the horizontal movement monitoring box are configured to monitor the dancing of the overhead line from two directions; The vertical motion monitoring box and the horizontal motion monitoring box are both provided with elastic parts, piezoelectric ceramics and pressure sensors, the two sides of the pressure sensor are respectively connected to the two piezoelectric ceramics, and each piezoelectric ceramic is elastically connected to the box through an elastic part; The pressure sensor is configured to send a pressure signal.

2. The device for monitoring the vibration of a power transmission line without power supply according to claim 1, characterized in that: The vertical motion monitoring box is configured to monitor the galloping of the overhead line from a first direction, and the horizontal motion monitoring box is configured to monitor the galloping of the overhead line from a second direction; wherein, The first direction and the second direction are both perpendicular to the extension direction of the overhead line, and the first direction and the second direction are arranged differently.

3. The device for monitoring the vibration of a power transmission line without power supply according to claim 2, characterized in that: The first direction and the second direction are perpendicular to each other.

4. The device for monitoring the vibration of a power transmission line without power supply according to claim 3, characterized in that: The first direction is a vertical direction, and the second direction is a horizontal direction.

5. The device for monitoring the vibration of a power transmission line without power supply according to claim 1, characterized in that: The elastic member is a spring or an elastic block; or, When the upper shell and the lower shell are fixed to each other, the upper shell and the lower shell together form a cylindrical body; or, The vertical motion monitoring box and the horizontal motion monitoring box are both arranged on the upper shell or the lower shell.

6. The device for monitoring the vibration of a power transmission line without power supply according to any one of claims 1 to 5, characterized in that: It also includes a self-locking mechanism, and the upper shell and the lower shell are fixed to each other through the self-locking mechanism.

7. The device for monitoring the dancing of power transmission lines without power supply according to claim 6, characterized in that: The self-locking mechanism comprises an elastic snap-fitting piece. When the upper shell and the lower shell are fixed to each other through the self-locking mechanism, the elastic snap-fitting piece undergoes elastic deformation to achieve self-locking.

8. A method for monitoring the galloping of a power transmission line without power supply, characterized in that: Includes steps: A non-power transmission line sway monitoring device is pre-installed on the overhead line, wherein the non-power transmission line sway monitoring device has a vertical motion monitoring box and a horizontal motion monitoring box; Using a vertical motion monitoring box to monitor the dancing of the overhead line from a first direction, and sending a first pressure signal to a detection system; Calculate, according to the first pressure signal, a first displacement of the vertical motion monitoring box in the first direction as the first displacement of the power transmission line dancing monitoring device without power supply in the first direction; A horizontal motion monitoring box is used to monitor the dancing of the overhead line from a second direction, and a second pressure signal is sent to the detection system; Calculate the second displacement of the overhead line of the horizontal motion monitoring box in the second direction according to the second pressure signal as the second displacement of the power transmission line dancing monitoring device without power supply in the second direction; An overall displacement vector of the non-power transmission line galloping monitoring device is calculated according to the first displacement in the first direction and the second displacement in the second direction.

9. The method for monitoring the dancing of a power transmission line without power supply according to claim 8, characterized in that: The first direction and the second direction are perpendicular to each other.

10. The method for monitoring the galloping of a power transmission line without power supply according to claim 9, characterized in that: The first direction is a vertical direction, and the second direction is a horizontal direction; and / or, The method for monitoring the galloping of a power transmission line without power supply further comprises the step of: issuing an alarm signal when the overall displacement vector exceeds a preset threshold.

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