Self-adaptive windage yaw monitoring device for power transmission line
By installing an adaptive angle structure and ultrasonic distance sensor on the transmission line, keeping the probe direction perpendicular to the tower body, the problem of insufficient accuracy and stability of stroke bias monitoring in the prior art is solved, and high-precision and low-cost wind bias monitoring are achieved Effect.
Patent Information
- Application Number
- CN202323401607.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-14
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2033-12-14
AI Technical Summary
When monitoring the wind deviation of transmission lines, the measurement accuracy is greatly affected by the installation location and worker proficiency. Video and image processing methods are easily affected by viewing angles and meteorological conditions. Satellite positioning methods require the layout of reference stations near the monitoring point, which costs Higher, resulting in poor monitoring effect.
Design an adaptive wind bias monitoring device, including installing an adaptive angle structure and distance sensor at the end of the dangling insulator string, using an ultrasonic distance sensor to measure the distance between the dangling insulator string and the pole tower in real time, and through the adaptive angle structure and counterweight parts Keep the sensor probe direction perpendicular to the tower body to ensure measurement accuracy and stability.
It realizes accurate monitoring of wind deviation distance in strong winds, reduces measurement errors, improves monitoring accuracy and stability, and avoids problems due to high meteorological conditions and installation costs.
Smart Images
Figure CN222259578U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wind deviation monitoring of power transmission lines, in particular to a self-adaptive wind deviation monitoring device for power transmission lines. Background Art
[0002] The terrain and climate conditions in the areas where power transmission lines pass are complex. They often need to cross mountains and rivers, and are more likely to encounter severe weather such as severe cold and heat, wind, frost, rain and snow. These environmental conditions place high demands on the design of transmission lines. Due to the underestimation of wind loads in extreme weather during previous design processes, transmission lines may suffer serious damage such as wind deflection flashover, line breakage, waist bending and even tower collapse under strong winds. Among them, accidents caused by wind deflection flashover are wide in scope, frequent in number and have great impact. According to statistics, wind deflection tripping of transmission lines with voltage levels of (66) kV and above in the State Grid Corporation system is one of the main causes of fault shutdown, which has a great impact on the safe and stable operation of the power grid system.
[0003] Wind-induced flashover often occurs when transmission lines swing under strong winds. Since the air gap between live parts such as conductors or suspension insulator string fittings and pole towers becomes smaller at this time, the possibility of discharge flashover is greatly increased. Most wind-induced flashovers occur under working voltage, and the re-combination power of line tripping after wind-induced flashover is low, which seriously affects the normal operation of the power grid system and may cause large-scale power outages, resulting in huge economic losses and social impacts.
[0004] At present, wind deviation can be monitored by applying angle sensors, video monitoring and image processing, and satellite positioning. The angle sensor method usually installs an angle sensor at the top or bottom of the suspension insulator string, and measures the inclination angle and other data of the suspension insulator string during the swing process to reflect the wind deviation angle of the suspension insulator string, and calculates the wind deviation distance through the line design parameters.
[0005] The video and image processing method uses a camera to capture the swinging image of the suspension insulator string, and uses image processing methods such as edge feature matching to determine the wind deviation angle and offset of the suspension insulator string. The focus is on extracting the image of the suspension insulator string and then determining the coordinates of its two end points to solve the wind deviation distance.
[0006] The satellite positioning system calculates the three-dimensional coordinates (longitude, latitude, and altitude) of the positioning target itself by measuring the relative positions of more than four visible satellites in space. The wind deviation monitoring method based on satellite differential (RTK) obtains the spatial position information of the transmission line in real time through satellite differential technology and transmits it to the ground server through wireless transmission technology. The monitoring program in the server extracts the three-dimensional spatial data of the conductor, converts it into coordinate values in a three-dimensional Cartesian coordinate system, and calculates the wind deviation distance.
[0007] These three methods have the following shortcomings:
[0008] (1) The angle sensor measures the angle value of the suspension insulator string, which is converted into windage distance through equivalent calculation of design parameters. Its measurement accuracy is greatly affected by the installation location and the proficiency of the workers.
[0009] (2) Video and image processing methods are easily affected by viewing angles and weather conditions and become ineffective;
[0010] (3) Satellite positioning relies on differential satellite positioning technology, which requires the deployment of base stations near the monitoring points, which is very expensive. Utility Model Content
[0011] In order to overcome the above-mentioned shortcomings of the prior art, the utility model proposes a transmission line adaptive wind deviation monitoring device, comprising: an adaptive angle structure connected to the end of a suspended insulator string in a transmission line, a fixed sliding rod with one end slidably connected to the adaptive angle structure and a counterweight fixed at the other end, and a distance sensor installed on the fixed sliding rod;
[0012] The adaptive angle structure is used for: when the suspension insulator string is deflected by wind under the action of strong wind, the fixed slide rod drives the distance sensor to move under the action of the counterweight, so that the probe direction of the distance sensor is always perpendicular to the tower body direction;
[0013] The distance sensor is used to measure the distance between the device and the tower in real time and send it to a remote server.
[0014] Preferably, the distance sensor includes: an ultrasonic distance sensor.
[0015] Preferably, the ultrasonic distance sensor is located at one end of the fixed slide rod close to the counterweight.
[0016] Preferably, the transmitting probe of the ultrasonic distance sensor is exposed.
[0017] Preferably, the direction of the transmitting probe is always perpendicular to the direction of the tower body.
[0018] Preferably, the adaptive angle structure is fixedly connected to the end of the suspension insulator string.
[0019] Preferably, the adaptive angle structure comprises: an arcuate slide groove fixedly connected to the end shell of the suspension insulator string and arranged in the shell, and one end of the fixed slide rod is slidably connected in the arcuate slide groove.
[0020] Preferably, the counterweight component comprises: one or more counterweight blocks.
[0021] Preferably, the counterweight block is used to increase the wind stability of the device, so that the distance sensor is always perpendicular to the tower body and does not swing with the wind.
[0022] Preferably, the mass of the counterweight is proportional to the magnitude of the wind force.
[0023] Compared with the closest prior art, the utility model has the following beneficial effects:
[0024] The utility model provides an adaptive wind deviation monitoring device for a power transmission line, comprising: an adaptive angle structure connected to the end of a suspension insulator string in the transmission line, a fixed sliding rod with one end slidably connected to the adaptive angle structure and a counterweight fixed at the other end, and a distance sensor installed on the fixed sliding rod; the adaptive angle structure is used for: when the suspension insulator string is wind deflected under the action of strong winds, the fixed sliding rod drives the distance sensor to move under the action of the counterweight, so that the probe direction of the distance sensor is always perpendicular to the tower body direction; the distance sensor is used for: real-time measurement of the distance between the device and the pole tower, and sending it to a remote server. The real-time distance between the suspension insulator string and the pole tower body is monitored in real time by fixing it on the suspension insulator string and using an ultrasonic distance sensor, which is the wind deviation distance. In order to ensure that the ultrasonic sensor can accurately measure the distance under wind deviation conditions, an adaptive angle structure and a fixed sliding rod are designed;
[0025] When the suspension string is deflected by the wind, the device can use the fixed slide rod and the slide groove on the adaptive angle structure under the action of the counterweight to ensure verticality in real time, maintain the direction of the ultrasonic sensor probe unchanged, and measure the wind deviation distance. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 A side view of a transmission line adaptive windage monitoring device provided by the utility model;
[0027] Figure 2 A schematic diagram of an adaptive angle structure offset of a transmission line adaptive windage monitoring device provided by the utility model;
[0028] Figure 3 A front view of a transmission line adaptive windage monitoring device provided by the utility model;
[0029] Figure 4 A schematic diagram of a transmission line adaptive wind deviation monitoring device provided by the utility model being connected to a suspension insulator string when there is no wind deviation;
[0030] Figure 5 A schematic diagram of a transmission line adaptive windage monitoring device provided by the utility model being connected to a suspension insulator string during windage;
[0031] Among them, 1-ultrasonic distance sensor, 2-adaptive angle structure, 3-fixed sliding rod, 4-counterweight block. DETAILED DESCRIPTION
[0032] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.
[0033] Embodiment 1:
[0034] The utility model provides a transmission line adaptive wind deviation monitoring device such as Figure 1 As shown, it includes: an adaptive angle structure 2 connected to the end of a suspended insulator string in a transmission line, a fixed sliding rod 3 with one end slidably connected to the adaptive angle structure 2 and a counterweight fixed at the other end, and a distance sensor installed on the fixed sliding rod 3;
[0035] The adaptive angle structure 2 is used for: when the suspension insulator string is deflected by wind under the action of strong wind, the fixed slide rod 3 drives the distance sensor to move under the action of the counterweight, so that the probe direction of the distance sensor is always perpendicular to the tower body direction;
[0036] The distance sensor is used to measure the distance between the device and the tower in real time and send it to a remote server.
[0037] By fixing it on the suspension insulator string and using a distance sensor to monitor the real-time distance between the suspension insulator string and the tower body, that is, the wind deviation distance; in order to ensure that the sensor can accurately measure the distance between the tower and the measuring device under wind deviation conditions, an adaptive angle structure 2 and a fixed sliding rod 3 are designed.
[0038] When the suspension insulator string does not produce wind deflection, the adaptive angle structure 2, the distance sensor and the counterweight are all on the same horizontal line with the suspension insulator string and perpendicular to the ground;
[0039] When the suspended insulator string is deflected by wind, the distance sensor and the fixed slide rod 3 are driven to move on the adaptive angle structure 2 under the action of the counterweight, and the distance sensor is always perpendicular to the tower body and does not swing with the wind, thereby ensuring the accuracy of the measurement.
[0040] When the suspension insulator string is deflected by wind, Figure 2 As shown, the device can use the fixed slide rod 3 and the adaptive angle structure 2 under the action of the counterweight to ensure that it is vertically pointed to the ground in real time, maintain the direction of the distance sensor probe unchanged, and measure the windage distance.
[0041] Preferably, the distance sensor includes: an ultrasonic distance sensor 1.
[0042] The device adopts an indirect measurement method without an angle sensor, and uses an ultrasonic distance sensor 1 to measure the windage distance between the suspension insulator string and the tower body in real time, so that the monitoring effect is more intuitive.
[0043] Preferably, Figure 3 As shown, the ultrasonic distance sensor 1 is located at one end of the fixed slide rod 3 close to the counterweight.
[0044] The ultrasonic distance sensor 1 is placed at the bottom of the device and is always perpendicular to the tower body to measure the distance between the device and the tower in real time without swinging with the wind, thereby ensuring the accuracy of the measurement.
[0045] Preferably, the transmitting probe of the ultrasonic distance sensor 1 is exposed.
[0046] The transmitting probe is exposed, which can further ensure that the ultrasonic sensor 1 can accurately measure the distance under wind deviation conditions.
[0047] Preferably, the direction of the transmitting probe is always perpendicular to the direction of the tower body.
[0048] The probe direction does not swing with the wind, and the probe direction of the ultrasonic sensor 1 is always maintained perpendicular to the tower body to measure the wind deviation distance.
[0049] Preferably, the adaptive angle structure 2 is fixedly connected to the end of the suspension insulator string.
[0050] The self-adaptive angle structure 2 swings along with the suspension insulator string under wind deviation, and the fixed slide rod 3 drives the distance sensor to move on the self-adaptive angle structure 2 under the action of the counterweight.
[0051] Preferably, the adaptive angle structure 2 comprises: an arcuate slide groove fixedly connected to the end shell of the suspension insulator string and arranged in the shell, and one end of the fixed slide rod 3 is slidably connected in the arcuate slide groove.
[0052] The arc-shaped slide groove is used to fix one end of the slide rod 3 to move in the arc-shaped slide groove, so that the ultrasonic distance sensor 1 remains perpendicular to the tower body in the case of wind deviation.
[0053] Preferably, the counterweight component includes: one or more counterweight blocks 4.
[0054] The counterweight block 4 is used to provide weight for the fixed slide rod 3 to move away from the adaptive angle structure 2, so that when the wind deflects, the fixed slide rod 3 can drive the ultrasonic distance sensor 1 to move in the slide groove of the adaptive angle structure 2 under the action of the counterweight block 4, and make the probe direction of the ultrasonic distance sensor 1 always perpendicular to the tower body direction and not swing with the wind, thereby ensuring the accuracy of the measurement.
[0055] Preferably, the counterweight block 4 is used to increase the wind stability of the device, so that the distance sensor is always perpendicular to the tower body and does not swing with the wind.
[0056] The counterweight block 4 is placed at the bottom of the device to increase the wind stability of the device. When the suspension insulator string is deflected by wind under the action of strong wind and the wind deviation distance changes, the measuring angle of the device will change accordingly. Under the action of the counterweight block 4, the angle of the measuring device can be unaffected by the wind deviation and always perpendicular to the direction of the tower body.
[0057] Preferably, the mass of the counterweight 4 is proportional to the magnitude of the wind force.
[0058] The mass of the counterweight 4 can be adjusted according to the wind strength in the area. When facing strong winds, the mass of the counterweight 4 is increased to ensure that the probe direction of the ultrasonic distance sensor 1 in the device is always perpendicular to the tower body direction and does not swing with the wind, thereby accurately measuring the wind deviation distance.
[0059] Embodiment 2:
[0060] In order to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0061] The utility model provides a transmission line adaptive wind deviation monitoring device, such as Figure 4 and Figure 5 As shown:
[0062] When the suspension insulator string is deflected by wind under the action of strong wind and the wind deviation distance changes, the measuring angle of the device will change accordingly. However, under the action of the counterweight 4, the ultrasonic distance sensor 1 and the fixed slide rod 3 are driven to move in the slide groove of the adaptive angle structure 2, and the probe direction of the ultrasonic distance sensor 1 is always perpendicular to the tower body direction and does not swing with the wind, thereby ensuring the accuracy of the measurement.
[0063] The ultrasonic distance sensor 1 can measure the distance between the device and the pole tower in real time and send it to the remote server; the distance sensor is used to directly measure the wind deviation distance between the suspension insulator string and the tower body, rather than indirect measurement methods such as angle sensors, which reduces the angle sensor's measurement of the angle value of the suspension insulator string, which is converted into the wind deviation distance after equivalent calculation of the design parameters, and its measurement accuracy is greatly affected by the installation location and the proficiency of the workers; the video and image processing methods are easily affected by the viewing angle and meteorological conditions and fail; satellite positioning relies on differential satellite positioning technology, and a base station needs to be deployed near the monitoring point, which is costly and other unfavorable conditions, thereby increasing the accuracy of the measurement data and ensuring that when the suspension insulator string is wind deflected by strong winds, the distance sensor probe is still perpendicular to the tower body and can accurately measure the wind deviation distance.
[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit its protection scope. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that after reading the utility model, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the utility model, but these changes, modifications or equivalent substitutions are all within the protection scope of the pending claims of the utility model.
Claims
1. A transmission line adaptive wind deviation monitoring device, characterized in that: include: An adaptive angle structure (2) connected to the end of a suspended insulator string in a power transmission line, a fixed slide rod (3) having one end slidably connected to the adaptive angle structure (2) and a counterweight fixed at the other end, and a distance sensor mounted on the fixed slide rod (3); The adaptive angle structure (2) is used for: when the suspension insulator string is deflected by wind under the action of strong wind, the fixed slide rod (3) drives the distance sensor to move under the action of the counterweight, so that the probe direction of the distance sensor is always perpendicular to the tower body direction; The distance sensor is used to measure the distance between the device and the tower in real time and send the distance to a remote server.
2. The device according to claim 1, wherein The distance sensor comprises an ultrasonic distance sensor (1).
3. The device according to claim 2, wherein The ultrasonic distance sensor (1) is located at one end of the fixed sliding rod (3) close to the counterweight.
4. The device according to claim 3, characterized in that The transmitting probe of the ultrasonic distance sensor (1) is exposed.
5. The device according to claim 4, characterized in that The direction of the transmitting probe is always perpendicular to the direction of the tower body.
6. The device according to claim 1, wherein The adaptive angle structure (2) is fixedly connected to the end of the suspension insulator string.
7. The device according to claim 6, characterized in that The self-adaptive angle structure (2) comprises: an end shell fixedly connected to the suspension insulator string and an arc-shaped slide groove arranged in the shell, and one end of the fixed slide rod (3) is slidably connected in the arc-shaped slide groove.
8. The device according to claim 3, wherein The counterweight component comprises: one or more counterweight blocks (4).
9. The device according to claim 8, wherein The counterweight (4) is used to increase the wind stability of the device, so that the distance sensor is always perpendicular to the tower body and does not swing with the wind.
10. The device according to claim 8, wherein The mass of the counterweight (4) is proportional to the magnitude of the wind force.