Dynamic capacity-increasing wind power vector monitoring device for power transmission line

Abstract

The utility model relates to the technical field of power transmission line dynamic capacity-increasing monitoring equipment, in particular to a power transmission line dynamic capacity-increasing wind power vector monitoring device, which comprises a monitoring platform, a vector acquisition assembly, an angle acquisition assembly and a rotating speed acquisition assembly, the monitoring platform is electrically connected with the vector acquisition assembly, the angle acquisition assembly and the rotating speed acquisition assembly. The vector acquisition assembly is arranged at the bottom of the monitoring platform and is used for monitoring wind power in the vertical direction; the angle acquisition assembly is arranged at the bottom of the vector acquisition assembly and used for monitoring the wind direction in the horizontal direction; the rotating speed collecting assembly is arranged on the angle collecting assembly and used for monitoring the wind speed in the horizontal direction. According to the utility model, through the rotating speed acquisition assembly, the angle acquisition assembly and the vector acquisition assembly, wind power vector monitoring can be carried out on wind blown from all directions, and accurate monitoring of all-around wind power vectors on a power transmission line is realized.

Description

Technical Field

[0001] This utility model relates to the technical field of dynamic capacity expansion monitoring equipment for transmission lines, specifically a wind vector monitoring device for dynamic capacity expansion of transmission lines. Background Technology

[0002] Online monitoring for dynamic capacity expansion of transmission lines involves directly installing online monitoring devices (hereinafter referred to as monitoring devices) for conductor current, temperature, and environmental parameters on the transmission conductors that need to be monitored. The essence of dynamic capacity expansion technology is to install online monitoring devices on the transmission line to monitor the conductor's condition (conductor temperature, tension, sag, etc.) and meteorological conditions (ambient temperature, sunshine, wind speed, etc.). Without exceeding the current technical specifications (conductor temperature limit of 70℃), the maximum allowable current carrying capacity of the conductor is calculated based on relevant mathematical models. In areas with abundant wind energy, the impact of wind parameters on the dynamic capacity expansion of transmission lines needs to be carefully considered.

[0003] Most existing wind monitoring devices mainly use wind speed acquisition devices fixedly installed on iron towers to collect the wind force in the horizontal direction at a fixed position. However, they cannot monitor and collect wind direction data, which will have a certain impact on the evaluation model of dynamic capacity expansion of transmission lines. Currently, devices that can collect both wind speed and wind direction data can only collect wind force information in a fixed direction and cannot perform wind force vector monitoring of wind speed and direction from various directions.

[0004] Therefore, it is necessary to provide a new dynamic capacity expansion monitoring device for transmission lines to solve the above-mentioned technical problems. Utility Model Content

[0005] The main purpose of this invention is to provide a dynamic capacity expansion monitoring device for power transmission lines, which aims to solve the problem that existing monitoring devices cannot accurately monitor wind force vectors in different directions.

[0006] To achieve the above objectives, this utility model proposes a novel wind vector monitoring device for dynamic capacity expansion of transmission lines. The wind vector includes wind direction and wind force. The wind direction is decomposed into vertical wind direction and horizontal wind direction, and the wind force is decomposed into vertical wind force and horizontal wind force. The wind vector monitoring device for dynamic capacity expansion of transmission lines includes a monitoring platform, a vector acquisition component, an angle acquisition component, and a rotational speed acquisition component. The monitoring platform is installed on the transmission line and is electrically connected to the vector acquisition component, the angle acquisition component, and the rotational speed acquisition component. The vector acquisition component is located at the bottom of the monitoring platform and is used to monitor the vertical wind force. The angle acquisition component is located at the bottom of the vector acquisition component and is used to monitor the horizontal wind direction. The rotational speed acquisition component is located on the angle acquisition component and is used to monitor the horizontal wind speed.

[0007] Optionally, the vector acquisition component includes a first housing, a first support rod, a sliding block, an elastic element, a disk, and a pressure sensor. The first housing forms a sliding cavity with an open bottom. A first end of the first support rod is connected to the monitoring platform, and a second end extends into the sliding cavity and connects to the sliding block. The sliding block is slidably disposed within the sliding cavity. The elastic element is sleeved on the outside of the first support rod and abuts against the sliding block and the top wall of the cavity. The disk is disposed at the bottom of the first housing. The elastic block is pre-tightly disposed between the sliding block and the disk. The pressure sensor is embedded on the side of the disk facing the elastic block, and the pressure sensor is used to acquire the pressure signal between the elastic block and the disk.

[0008] Optionally, the preload between the elastic block and the disk is 1 / 10 of the weight of the wind vector monitoring device.

[0009] Optionally, the elastic block is tapered in the vertically downward direction.

[0010] Optionally, the inner wall of the sliding cavity forms two opposing guide plates; guide grooves corresponding to the guide plates are formed on both sides of the sliding block, and the sliding block is slidably connected to the guide plates through the guide grooves.

[0011] Optionally, the angle acquisition component includes a second housing, an angle sensor, a limiting block, a second support rod, and a wind vane assembly. The second housing is disposed at the bottom of the disk, and a cavity with a top opening is formed inside the second housing. The angle sensor is disposed within the cavity. The limiting block is rotatably disposed within the cavity, and the limiting block is connected to the input shaft of the angle sensor. The first end of the second support rod extends into the cavity and is connected to the limiting block, and the second end is connected to the wind vane assembly. A bearing is provided at the connection between the second support rod and the second housing, and the second support rod is rotatably connected to the second housing through the bearing. The speed acquisition component is disposed on the wind vane assembly.

[0012] Optionally, the wind vane assembly includes a crossbar and a spoiler. The crossbar is connected to the second support rod. The spoiler and the speed acquisition component are respectively disposed at both ends of the crossbar, and the spoiler and the speed acquisition component are in force balance about the connection point between the crossbar and the second support rod.

[0013] Optionally, the rotational speed acquisition component includes a rotational speed acquisition element and a fan blade. The rotational speed acquisition element is disposed at the end of the crossbar away from the spoiler. The fan blade is connected to the input shaft of the rotational speed acquisition element. The rotational speed acquisition device is used to acquire the rotational speed of the fan blade.

[0014] In this utility model, wind speed and direction in the horizontal direction are collected by a rotation speed acquisition component and an angle acquisition component. The monitoring platform can obtain the wind force in the vertical direction by interpolating and fitting the vertical pressure value obtained by the vector acquisition component. The rotation speed acquisition component, angle acquisition component, and vector acquisition component can send the acquired signals to the monitoring platform. The monitoring platform can process the acquired signals to obtain the wind force vector. This utility model can monitor the wind speed and direction of wind from all directions, realizing accurate monitoring of the wind force vector in all directions on the power transmission line. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the power transmission line dynamic capacity expansion wind vector monitoring device in this embodiment of the present invention;

[0017] Figure 2This is a partial cross-sectional view of the wind vector monitoring device for dynamic capacity expansion of transmission lines in this embodiment of the present invention.

[0018] Explanation of icon numbers:

[0019] 1 Monitoring platform, 2 Vector acquisition component, 2.1 First housing, 2.1.1 Sliding cavity, 2.1.2 Guide strip, 2.2 Pressure sensor, 2.3 First support rod, 2.4 Sliding block, 2.4.1 Guide groove, 2.5 Elastic element, 2.6 Disc, 2.7 Elastic block, 3 Angle acquisition component, 3.1 Second housing, 3.1.1 Cavity, 3.2 Limiting block, 3.3 Second support rod, 3.4 Angle sensor, 3.5 Wind vane component, 3.5.1 Crossbar, 3.5.2 Spoiler, 3.6 Bearing, 4 Rotation speed acquisition component, 4.1 Rotation speed acquisition element, 4.2 Fan blade, 5 Power transmission line.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0022] This invention proposes a dynamic capacity expansion wind vector monitoring device for power transmission lines, aiming to solve the problem that existing dynamic capacity expansion monitoring devices for power transmission lines cannot accurately detect wind vectors.

[0023] like Figure 1As shown, the power transmission line dynamic capacity expansion wind vector monitoring device in this embodiment is used to monitor the wind vector of the environment surrounding the power transmission line 5. The wind vector includes wind direction and wind force. The wind direction is decomposed into vertical wind direction and horizontal wind direction, and the wind force is decomposed into vertical wind force and horizontal wind force. The power transmission line dynamic capacity expansion wind vector monitoring device includes a monitoring platform 1, a vector acquisition component 2, an angle acquisition component 3, and a speed acquisition component 4. The monitoring platform 1 is installed on the power transmission line 5 and is electrically connected to the vector acquisition component 2, the angle acquisition component 3, and the speed acquisition component 4, respectively. The vector acquisition component 2 is installed at the bottom of the monitoring platform 1 and is used to monitor the vertical wind force. The angle acquisition component 3 is installed at the bottom of the vector acquisition component 2 and is used to monitor the horizontal wind direction. The speed acquisition component 4 is installed on the angle acquisition component 3 and is used to monitor the horizontal wind force. In actual operation, the wind speed and direction in the horizontal direction are collected by the rotation speed acquisition component 4 and the angle acquisition component 3. The wind force in the vertical direction is obtained by interpolation fitting based on the vertical pressure value obtained by the vector acquisition component 2. The rotation speed acquisition component 4, the angle acquisition component 3 and the vector acquisition component 2 can send the collected signals to the monitoring platform 1. The monitoring platform 1 can process the collected signals to obtain the wind force vector. This utility model can monitor the wind speed and direction of the wind force vector from all directions, realizing accurate monitoring of the wind force vector in all directions on the transmission line 5.

[0024] See Figure 2The vector acquisition component 2 includes a first housing 2.1, a first support rod 2.3, a sliding block 2.4, a disc 2.6, a pressure sensor 2.2, and an elastic block 2.7. The first housing 2.1 forms a sliding cavity 2.1.1 with an open bottom. The first end of the first support rod 2.3 is connected to the monitoring platform 1, and the second end extends into the sliding cavity 2.1.1 and is connected to the sliding block 2.4. The sliding block 2.4 is slidably disposed in the sliding cavity 2.1.1. The disc 2.6 is disposed at the bottom of the first housing 2.1. The pressure sensor 2.2 is embedded in the side of the disc 2.6 facing the sliding cavity 2.1.1. The elastic block 2.7 is pre-tightly disposed between the sliding block 2.4 and the disc 2.6. When the wind blows the disc 2.6, the elastic element 2.5 provides a buffer for the slight sliding of the sliding block 2.4 within the first housing 2.1. An elastic block 2.7 is installed at the bottom of the sliding block 2.4. A pressure sensor 2.2 is embedded in the side of the disc 2.6 facing the sliding cavity 2.1.1. The pressure sensor 2.2 is used to collect the pressure signal between the elastic block 2.7 and the disc 2.6 and send it to the monitoring platform 1, thereby realizing the real-time measurement of the vertical wind force. Specifically, when there is a vertically downward wind, the wind blows the disc 2.6. When disk 26 tends to move downwards, the sliding block 2.4 inside the first housing 2.1 slides slightly upwards, and the pressure value collected by pressure sensor 2.2 decreases. When there is a vertically upward wind, the wind blows disk 2.6, causing it to tend to move upwards. At this time, the sliding block 2.4 inside the first housing 2.1 slides slightly downwards, and the pressure value collected by pressure sensor 2.2 increases. By interpolating and fitting the values ​​collected by pressure sensor 2.2 based on the measured data, the vertical wind force vector can be monitored based on the pressure value collected by pressure sensor 2.2.

[0025] The preload between the elastic block 2.7 and the disc 2.6 is 1 / 10 of the weight of the wind vector monitoring device. After multiple tests, it was determined that the overall structural stability is optimal when the preload between the elastic block 2.7 and the disc 2.6 is 1 / 10 of the weight of the wind vector monitoring device.

[0026] Specifically, the elastic block 2.7 is tapered in the vertically downward direction. The tapered end of the elastic block 2.7 abuts against the pressure sensor 2.2 to ensure the measurement accuracy of the pressure sensor 2.2, while the expanding end of the elastic block 2.7 is connected to the sliding block 2.4 to increase the contact surface with the sliding block 2.4 and ensure uniform force distribution.

[0027] Furthermore, two opposing guide plates 2.1.2 are formed on the inner wall of the sliding cavity 2.1.1; guide grooves 2.4.1 corresponding to the guide plates 2.1.2 are formed on both sides of the sliding block 2.4, and the sliding block 2.4 is slidably connected to the guide plates 2.1.2 through the guide grooves 2.4.1. The sliding engagement between the sliding block 2.4 and the guide plates 2.1.2 through the guide grooves 2.4.1 can both limit the movement of the sliding block 2.4 within the sliding cavity 2.1.1 and provide guidance.

[0028] In this embodiment, the angle acquisition component 3 includes a second housing 3.1, an angle sensor 3.4, a limiting block 3.2, a second support rod 3.3, and a wind vane component 3.5. The second housing 3.1 is disposed at the bottom of the disk 2.6, and a cavity 3.1.1 with a top opening is formed inside the second housing 3.1. The angle sensor 3.4 is disposed inside the cavity. The limiting block 3.2 is rotatably disposed inside the cavity 3.1.1, and the limiting block 3.2 is connected to the input shaft of the angle sensor 3.4. The first end of the second support rod 3.3 extends into the cavity 3.1.1 and is connected to the limiting block 3.2, and the second end is connected to the wind vane component 3.5. A bearing 3.6 is provided at the connection between the second support rod 3.3 and the second housing 3.1, and the second support rod 3.3 is rotatably connected to the second housing 3.1 through the bearing 3.6. The speed acquisition component 4 is disposed on the wind vane component 3.5. The wind vane assembly 3.5 can rotate the limiting block 3.2 through the second support rod 3.3 under the action of wind. At the same time, the limiting block 3.2 drives the input shaft of the angle sensor 3.4 to rotate, so that the angle sensor 3.4 can collect the rotation angle in the horizontal direction. The angle sensor 3.4 sends the rotation angle signal to the monitoring platform 1, thereby enabling the real-time acquisition of the wind direction in the horizontal direction.

[0029] The wind vane component 3.5 includes a crossbar 3.5.1 and a spoiler 3.5.2. The crossbar 3.5.1 is connected to the second support rod 3.3. The spoiler 3.5.2 and the speed acquisition component 4 are respectively located at both ends of the crossbar 3.5.1, and the spoiler 3.5.2 and the speed acquisition component 4 are in force balance about the connection point between the crossbar 3.5.1 and the second support rod 3.3. The spoiler 3.5.2 is tapered away from the crossbar 3.5.1 to ensure that the tapered end of the spoiler 3.5.2 points in the same direction as the wind. The spoiler 3.5.2 and the speed acquisition component 4 distributed at both ends of the crossbar 3.5.1 are symmetrical about the connection point between the second support rod 3.3 and the crossbar 3.5.1 to achieve a state of force balance. In a free state, the crossbar 3.5.1 will not tilt due to its own weight, which can ensure the long-term stable operation of the device and improve the monitoring accuracy of the device.

[0030] Furthermore, the rotational speed acquisition component 4 includes a rotational speed acquisition element 4.1 and a fan blade 4.2. The rotational speed acquisition element 4.1 is located at the end of the crossbar 3.5.1 away from the spoiler 3.5.2. The fan blade 4.2 is connected to the input shaft of the rotational speed acquisition element 4.1. The rotational speed acquisition element is used to acquire the rotational speed of the fan blade 4.2. The fan blade 4.2 can rotate under the action of wind force, and the rotational speed acquisition element 4.1 can acquire the rotational speed of the fan blade 4.2 and send the rotational speed signal to the monitoring platform 1. The monitoring platform 1 can obtain the horizontal separation magnitude based on the rotational speed signal.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A dynamic capacity expansion wind vector monitoring device for transmission lines, wherein the wind vector includes wind direction and wind force, the wind direction is decomposed into vertical wind direction and horizontal wind direction, and the wind force is decomposed into vertical wind force and horizontal wind force, characterized in that, The wind vector detection device includes a monitoring platform (1), a vector acquisition component (2), an angle acquisition component (3), and a rotational speed acquisition component (4). The monitoring platform (1) is installed on a power transmission line (5) and is electrically connected to the vector acquisition component (2), the angle acquisition component (3), and the rotational speed acquisition component (4). The vector acquisition component (2) is installed at the bottom of the monitoring platform (1) and is used to monitor the wind force in the vertical direction. The angle acquisition component (3) is installed at the bottom of the vector acquisition component (2) and is used to monitor the wind direction in the horizontal direction. The rotational speed acquisition component (4) is installed on the angle acquisition component (3) and is used to monitor the wind speed in the horizontal direction.

2. The power transmission line dynamic capacity expansion wind vector monitoring device as described in claim 1, characterized in that, The vector acquisition component (2) includes a first housing (2.1), a first support rod (2.3), a sliding block (2.4), an elastic element (2.5), a disk (2.6), an elastic block (2.7), and a pressure sensor (2.2). The first housing (2.1) forms a sliding cavity (2.1.1) with an open bottom. The first end of the first support rod (2.3) is connected to the monitoring platform (1), and the second end extends into the sliding cavity (2.1.1) and is connected to the sliding block (2.4). The sliding block (2.4) is slidably disposed within the sliding cavity (2.1.1). The elastic element (2.5) The elastic element (2.5) is sleeved on the outside of the first support rod (2.3), and the elastic element (2.5) abuts against the sliding block (2.4) and the top wall of the cavity (3.1.1); the disc (2.6) is disposed at the bottom of the first housing (2.1); the elastic block (2.7) is pre-tightly disposed between the sliding block (2.4) and the disc (2.6); the pressure sensor (2.2) is embedded on the side of the disc (2.6) facing the elastic block (2.7), and the pressure sensor (2.2) is used to collect the pressure signal between the elastic block (2.7) and the disc (2.6).

3. The power transmission line dynamic capacity expansion wind vector monitoring device as described in claim 2, characterized in that, The preload between the elastic block (2.7) and the disk (2.6) is 1 / 10 of the weight of the wind vector monitoring device.

4. The power transmission line dynamic capacity expansion wind vector monitoring device as described in claim 3, characterized in that, The elastic block (2.7) is tapered in the vertically downward direction.

5. The power transmission line dynamic capacity expansion wind vector monitoring device as described in claim 4, characterized in that, The inner wall of the sliding cavity (2.1.1) forms two opposing guide plates (2.1.2); the two sides of the sliding block (2.4) respectively form guide grooves (2.4.1) corresponding to the guide plates (2.1.2), and the sliding block (2.4) is slidably connected to the guide plates (2.1.2) through the guide grooves (2.4.1).

6. The power transmission line dynamic capacity expansion wind vector monitoring device as described in claim 5, characterized in that, The angle acquisition component (3) includes a second housing (3.1), an angle sensor (3.4), a limiting block (3.2), a second support rod (3.3), and a wind vane component (3.5). The second housing (3.1) is located at the bottom of the disk (2.6), and a cavity (3.1.1) with a top opening is formed inside the second housing (3.1). The angle sensor (3.4) is located inside the cavity. The limiting block (3.2) is rotatably located inside the cavity (3.1.1), and the limiting block (3.2) is connected to the... The input shaft of the angle sensor (3.4) is connected; the first end of the second support rod (3.3) extends into the cavity (3.1.1) and is connected to the limiting block (3.2), and the second end is connected to the wind vane assembly (3.5). A bearing (3.6) is provided at the connection between the second support rod (3.3) and the second housing (3.1). The second support rod (3.3) is rotatably connected to the second housing (3.1) through the bearing (3.6); the speed acquisition assembly (4) is disposed on the wind vane assembly (3.5).

7. The power transmission line dynamic capacity expansion wind vector monitoring device as described in claim 6, characterized in that, The wind vane assembly (3.5) includes a crossbar (3.5.1) and a spoiler (3.5.2). The crossbar (3.5.1) is connected to the second support rod (3.3). The spoiler (3.5.2) and the speed acquisition assembly (4) are respectively located at both ends of the crossbar (3.5.1), and the spoiler (3.5.2) and the speed acquisition assembly (4) are in force balance about the connection point between the crossbar (3.5.1) and the second support rod (3.3).

8. The power transmission line dynamic capacity expansion wind vector monitoring device as described in claim 7, characterized in that, The rotational speed acquisition component (4) includes a rotational speed acquisition element (4.1) and a fan blade (4.2). The rotational speed acquisition element (4.1) is located at the end of the crossbar (3.5.1) away from the spoiler (3.5.2). The fan blade (4.2) is connected to the input shaft of the rotational speed acquisition element (4.1). The rotational speed acquisition element is used to acquire the rotational speed of the fan blade (4.2).

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