Fault indication type gap lightning arrester with tower inclination monitoring device

Abstract

The invention relates to a fault indication type gap lightning arrester with a tower inclination monitoring device, which comprises a gap lightning arrester body, and a tower inclination trigger communication box is arranged on a support piece on the lower side of the gap lightning arrester body and is used for monitoring the inclination of a tower in real time. The tower inclination triggering communication box can sense and trigger a communication function in real time, when the tower inclines due to external force such as natural force, gravity and stress, the inclination angle and displacement condition of the tower can be accurately measured, information is transmitted to a monitoring terminal, and operation and maintenance personnel can take measures in time.

Description

Technical Field

[0001] The invention relates to the technical field of power equipment production, in particular to a gap lightning arrester with a pole tower tilt monitoring device and a fault indication type. Background Art

[0002] A lightning arrester is an electrical device used to protect electrical equipment from high transient overvoltage hazards during lightning strikes, and to limit the follow-on time and often the follow-on amplitude. A lightning arrester is sometimes also called an overvoltage protector or overvoltage limiter.

[0003] Although existing lightning arresters effectively solve the problem of line disconnection and tripping due to lightning strikes, when the pole tower tilts due to external forces such as natural forces, gravity, and stress, it will cause the pole tower to twist, tilt or move, and even in severe cases, accidents such as pole tower collapse may occur, seriously threatening the stability of the power system.

[0004] Therefore, a gap arrester with a tower tilt monitoring device and a fault indication type is proposed. Summary of the invention

[0005] The object of the present invention is to provide a tower tilt monitoring device with a fault indication type gap arrester, through the tower tilt trigger communication box installed on the support member on the lower side of the gap arrester body, the tilt of the tower is monitored in real time.

[0006] To achieve the above object, the present invention provides the following technical solutions: A tower tilt monitoring device with a fault indication type gap arrester includes a gap arrester body, and a tower tilt trigger communication box for real-time monitoring of the tilt angle of the tower is installed on the support member at the lower side of the gap arrester body; the tower tilt trigger communication box includes: Power module: provides power for the node signal transmission processor and communication module, using solar energy + battery power supply mode; Dual-axis tilt sensor: measures and obtains the status information of the tower (position, speed or angle, etc.), monitors and measures the built-in accelerometer and gyroscope in the dual-axis tilt sensor, and uses the Kalman filter algorithm to obtain the tilt angle of the tower; Node signal transmission processor: transmits the information collected and processed by the dual-axis tilt sensor to the monitoring terminal through the communication module; Communication module: used for transmission and exchange of information between node signal processor and monitoring terminal.

[0007] Preferably, the dual-axis tilt sensor comprises: Accelerometer: monitors and measures the acceleration changes of the tower and converts them into electrical signal output; Gyroscope: measures the tilt angle and rotational motion of the tower to determine whether the tower is tilted or displaced.

[0008] Preferably, the dual-axis tilt sensor transmits the acquired tower state information and the tower tilt angle obtained by using the Kalman filter algorithm to the node signal transmission processor, and the node signal transmission processor transmits the information to the monitoring terminal through the communication module.

[0009] Preferably, a drainage line is installed at the top of the gap arrester body, an insulating bracket is installed at the lower end of the gap arrester body, a disconnector is installed at the lower end of the insulating bracket, and a support for fixing the tower tilt trigger communication box is provided at the connection between the disconnector and the insulating bracket.

[0010] Preferably, one end of the insulating bracket is sleeved on the lower end of the gap arrester body, and the other end of the insulating bracket is installed with a bolt. The tail end of the disconnector is connected to one end of the copper wire braided belt, and the other end of the copper wire braided belt is connected to the bolt of the insulating bracket.

[0011] Preferably, an electrode A is installed in the middle of the body of the arrester with a gap, and an electrode B is installed on a metal bracket installed near the bolt of the insulating bracket, and the center lines of the electrode A and the electrode B are in a straight line.

[0012] Preferably, the insulating bracket and the metal bracket are fixedly connected.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. When the tower tilts due to external forces such as natural forces, gravity, stress, etc., the tower tilt trigger communication box can sense and trigger the communication function in real time, accurately monitor and measure the tilt angle and displacement of the tower, and transmit the information to the monitoring terminal so that the operation and maintenance personnel can take timely measures.

[0014] 2. The tower tilt trigger communication box can help operation and maintenance personnel understand the operation status of the tower in real time, discover and deal with potential tilt problems in time, and avoid accidents such as tower collapse. In addition, the tower tilt trigger communication box can also integrate the collection of meteorological data such as ambient temperature, humidity, wind speed, wind direction, etc., to achieve all-weather online monitoring of the tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of a gap arrester with a tower tilt monitoring device and a fault indication type; Figure 2 Flowchart for triggering the communication box for tower tilt.

[0016] In the figure: 1. Arrester body with gap; 2. Drainage line; 3. Insulating bracket; 4. Disconnector; 5. Support; 6. Tower tilt trigger communication box; 7. Bolt; 8. Copper wire braid; 9. Metal bracket; 10. Electrode A; 11. Electrode B. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1 to Figure 2 The present invention provides a lightning arrester with a gap and a tower tilt monitoring device and a fault indication type, and the technical solution is as follows: A gapped lightning arrester with a tower tilt monitoring device and a fault indication type includes a gapped lightning arrester body 1, a tower tilt triggering communication box 6 is installed on a support 5 at the lower end of the gapped lightning arrester body 1, the tower tilt triggering communication box 6 is fixed in position by the support 5, and the tower tilt triggering communication box 6 is installed on the support 5 for real-time monitoring of the tilt of the tower. The support 5 can also be a bracket.

[0019] The pole tower tilt trigger communication box 6 is mainly used for monitoring and measuring the tilt of the pole tower. When the pole tower tilts due to external forces such as natural force, gravity, stress, etc., the pole tower tilt trigger communication box 6 can sense and trigger the communication function in real time, and can accurately measure the tilt angle and displacement of the pole tower, and transmit the information to the monitoring terminal so that the operation and maintenance personnel can take timely measures.

[0020] The tower tilt trigger communication box 6 includes: Power module: Provides power for the node signal transmission processor and communication module to ensure the normal operation of the equipment; adopts solar energy + battery power supply mode, the solar panel collects solar energy and converts solar energy into electricity to power the power module to ensure the normal operation of the tower tilt trigger communication box 6. The battery stores electrical energy, which can keep the tower tilt trigger communication box 6 working normally under severe weather conditions such as continuous rain.

[0021] Dual-axis tilt sensor: measures the position, speed or angle of an object, and uses the Kalman filter algorithm to obtain the tilt angle of the tower based on the monitoring and measurement of the internal accelerometer and gyroscope.

[0022] The dual-axis tilt sensor includes: Accelerometer: The accelerometer can detect and measure the acceleration change of the tower and convert it into an electrical signal output. By detecting the acceleration of the tower, that is, the change in the speed of the tower per unit time, including the change in speed magnitude and direction, the tilt angle can be deduced.

[0023] Gyroscope: A device used to measure and maintain direction, providing accurate angle and angular velocity measurements to monitor and evaluate the stability and safety of the tower. It provides attitude, direction and speed information by monitoring angular velocity or angle. The working principle of the gyroscope is based on the principle of conservation of angular momentum, that is, a flywheel rotor (gyroscope) rotating at high speed around an axis of symmetry will always point to a fixed direction due to its inertia. In the tower tilt trigger communication box 6, the gyroscope is mainly used to measure the tilt angle and rotational motion of the tower to determine whether the tower is tilted or displaced.

[0024] Node signal transmission processor: transmits the information collected and processed by the dual-axis tilt sensor, such as tilt, inline tilt, lateral tilt, inline tilt angle, lateral tilt angle and other data information to the monitoring terminal through the communication module.

[0025] Communication module: used for transmission and exchange of information between the node signal processor and the monitoring terminal; the node signal transmission processor and the communication module are integrated in the same module. Example

[0026] In this embodiment, a pole tower tilt trigger communication box 6 is installed at the lower end of the gap arrester body 1, and the pole tower tilt trigger communication box 6 is fixed by a support 5, and the support 5 is installed on the gap arrester body 1, and the support frame can also be a bracket, etc. The pole tower tilt trigger communication box 6 uses the internally arranged dual-axis tilt sensor and node signal transmission processor to monitor the pole tower tilt angle in real time, such as parallel to the line direction and perpendicular to the line direction.

[0027] First, the power module is used to provide power to the node signal transmission processor and the communication module, and to provide power to maintain the normal operation of the equipment. The power module adopts the solar energy + battery power supply mode. The solar panel converts the absorbed solar energy into electrical energy to power the entire device; in addition, there is also electrical energy in the battery. When there are severe weather conditions such as continuous rain, the tower tilt trigger communication box 6 can still work normally. Then the dual-axis tilt sensor measures the tilt angle of the tower on different axes, that is, the tower inline tilt angle, the tower lateral tilt angle, etc. The dual-axis tilt sensor monitors the tower by the inclination method and measures the inclination range and accuracy of the tower. The inline inclination angle of the tower is ±10°, ≤±0.05°, and the lateral inclination angle of the tower is ±10°, ≤±0.05°. When the inclination exceeds this range, the information will be transmitted to the monitoring terminal, and the inclination information collection is automatic and controlled. For data processing and judgment, data is collected when the tower inclination angle is monitored to exceed the set threshold. The data is stored in a loop for at least 30 days. The minimum collection interval is greater than 30 minutes and the minimum collection interval is less than or equal to 24 hours. The default time interval is 60 minutes.

[0028] The dual-axis tilt sensor uses the internal accelerometer and gyroscope to measure and calculate the tilt angle of the tower. The accelerometer derives the tilt angle by detecting the acceleration of the tower, while the gyroscope is used to detect the tilt angle of the tower in the horizontal direction. Through the two types of measurement values, the dual-axis tilt sensor can calculate the tilt angle of the tower. When the dual-axis tilt sensor is in a horizontal position, the effect of gravity on the accelerometer is very small or even negligible. Once the dual-axis tilt sensor is tilted, gravity will cause the accelerometer to produce a component, which is proportional to the tilt angle of the tower. The dual-axis tilt sensor converts the gravity acceleration measured by the accelerometer into a corresponding electronic signal, and uses an analog-to-digital converter (ADC) to convert the analog signal into a digital signal. Finally, the dual-axis tilt sensor calculates the tilt angle of the tower based on the converted digital signal using the Kalman filter algorithm.

[0029] After receiving the tower tilt angle information transmitted by the dual-axis tilt sensor, the node signal transmission processor outputs information such as tilt, inline tilt, lateral tilt, inline tilt angle, lateral tilt angle, etc., and transmits the information to the monitoring terminal through the communication module, so that the operation and maintenance personnel can monitor and measure the tilt angle and displacement of the tower in real time in order to take countermeasures. The communication module can also be 4G / 5G and wireless WIFI, etc., and the tower tilt angle information is remotely uploaded to the monitoring terminal through wireless communication transmission methods such as mobile, Unicom, and telecom network channels. The node signal transmission processor and the communication module are integrated in one module.

[0030] Of course, in actual operation, when the dual-axis tilt sensor measures the position, speed or angle of the tower, it may be interfered by errors, noise, etc., resulting in inaccurate data. The Kalman filter method can not only use the data provided by the dual-axis tilt sensor, but also make corrections based on the law of motion to improve the accuracy of the data. The node signal transmission processor transmits the received tower tilt information to the monitoring terminal, so that the operation and maintenance personnel can monitor the tilt of the tower in the line in real time, thereby performing targeted maintenance and ensuring the safe, stable and reliable operation of the power grid line equipment.

[0031] Acceleration is the measure of how velocity changes over time, which can involve changes in the magnitude or direction of velocity.

[0032] Components refer to the acceleration values ​​measured in different axes. In a three-axis accelerometer, these axes are usually the X, Y, and Z axes, which correspond to three mutually perpendicular directions. The accelerometer on each axis can independently measure the acceleration component along that axis, and these components together describe the acceleration state of the object in three-dimensional space; Kalman Filter is an efficient recursive algorithm for estimating the state of a dynamic system from a series of measurements containing noise. It was proposed by Rudolf E. Kalman in 1960 and was originally used in the aerospace field. Later, it was widely used in various engineering and scientific fields, such as navigation, control, signal processing, time series analysis, etc. These measurements are critical to understanding an object's state of motion; they can be used to calculate an object's velocity and change in position, as well as determine its orientation and attitude for a variety of applications.

[0033] like Figure 1 As shown, an insulating bracket 3 is also sleeved at the lower end of the gap arrester body 1, one end of the insulating bracket 3 is sleeved on the lower end of the gap arrester body 1, and a bolt 7 is installed on the other end away from the gap arrester body 1, and the bolt 7 fixes the insulating bracket 3 and the metal bracket 9 away from the gap arrester body 1. The metal bracket 9 is located near the bolt 7; a disconnector 4 is installed at the lower end of the insulating bracket 3, and a support 5 for fixing the tower tilt trigger communication box 6 is installed between the insulating bracket 3 and the disconnector 4. The tower tilt trigger communication box 6 is placed on the support 5, and the support 5 can also be a bracket. The other end of the tower tilt trigger communication box 6 leans against the gap arrester body 1. The bottom of the disconnector 4 is connected to one end of a copper wire braided belt 8, and the other end of the copper wire braided belt 8 is connected to the bolt 7 of the insulating bracket 3. The copper wire braided belt 8 has copper wire inside and is wrapped with an insulating layer outside to play a protective role.

[0034] A drainage line 2 is installed at the top of the gap arrester body 1, an electrode A10 is arranged in the middle position of the gap arrester body 1, and an electrode B11 is also arranged on the corresponding metal bracket 9, and the center lines of the electrodes A10 and B11 are in a straight line. The two electrodes are used for discharge. When the gap arrester discharges to the metal bracket 9 through the gap arrester body 1, a channel is formed to connect the ground; and when the gap arrester is struck by strong lightning, the gap arrester will explode, causing the disconnector 4 at the lower end of the gap arrester body 1 to fall off. Since one end of the copper wire braided belt 8 is connected to the lower end of the disconnector 4, and the other end is connected to the bolt 7 of the insulating bracket 3, when the disconnector 4 falls off, due to the connection of the copper wire braided belt 8, the dropped disconnector 4 is connected by the copper wire braided belt 8 and hung under the insulating bracket 3, forming a fault mark, which is convenient for the staff to operate and maintain. The disconnector 4 is a thermal explosion type disconnector 4.

[0035] Since an insulating bracket 3 is installed at the lower end of the arrester body 1 with a gap, the end of the insulating bracket 3 away from the arrester body 1 with a gap is fixedly connected to the metal bracket 9, and the copper wire braided belt 8 at the bottom end of the disconnector 4 is fixedly connected to the bolt 7 on the insulating bracket 3, even if the arrester with a gap encounters a strong lightning strike and the disconnector 4 falls off, due to the setting of the insulating bracket 3, if the arrester with a gap is damaged, no grounding, tripping and secondary faults will occur, thereby ensuring the stability and safe operation of the line.

[0036] While embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lightning arrester with a gap and a tower tilt monitoring device and a fault indication type, characterized in that: It comprises a gap arrester body (1), wherein a tower tilt trigger communication box (6) for real-time monitoring of the tilt angle of a tower is installed on a support member (5) at the lower side of the gap arrester body (1); The tower tilt trigger communication box (6) comprises: Power module: provides power for the node signal transmission processor and communication module, using solar energy + battery power supply mode; Dual-axis tilt sensor: measures and obtains the status information of the tower. The built-in accelerometer and gyroscope in the dual-axis tilt sensor monitor and measure, and the Kalman filter algorithm is used to obtain the tilt angle of the tower. Node signal transmission processor: transmits the information collected and processed by the dual-axis tilt sensor to the monitoring terminal through the communication module; Communication module: used for transmission and exchange of information between node signal processor and monitoring terminal.

2. The gap arrester with a tower tilt monitoring device and a fault indication type according to claim 1 is characterized in that: The dual-axis tilt sensor comprises: Accelerometer: monitors and measures the acceleration changes of the tower and converts them into electrical signal output; Gyroscope: measures the tilt angle and rotational motion of the tower to determine whether the tower is tilted or displaced.

3. The arrester with a gap and a fault indication type with a tower tilt monitoring device according to claim 2 is characterized in that: The dual-axis tilt sensor transmits the acquired tower state information and the tower tilt angle obtained by using the Kalman filter algorithm to the node signal transmission processor, and the node signal transmission processor transmits the information to the monitoring terminal through the communication module.

4. The arrester with a gap and a fault indication type with a tower tilt monitoring device according to claim 1 is characterized in that: A drain wire (2) is installed at the top of the gap arrester body (1), an insulating bracket (3) is installed at the lower end of the gap arrester body (1), a disconnector (4) is installed at the lower end of the insulating bracket (3), and a support (5) for fixing a tower tilt trigger communication box (6) is provided at the connection between the disconnector (4) and the insulating bracket (3).

5. The gap arrester with a tower tilt monitoring device and a fault indication type according to claim 4 is characterized in that: One end of the insulating bracket (3) is sleeved on the lower end of the gap arrester body (1), and the other end of the insulating bracket (3) is installed with a bolt (7). The tail end of the disconnector (4) is connected to one end of a copper wire braided belt (8), and the other end of the copper wire braided belt is connected to the bolt (7) of the insulating bracket (3).

6. The arrester with gap and fault indication with tower tilt monitoring device according to claim 5 is characterized in that: An electrode A (10) is installed at the middle position of the gap arrester body (1), and an electrode B (11) is installed on the metal bracket (9) installed near the bolt (7) of the insulating bracket (3), and the center lines of the electrode A (10) and the electrode B (11) are on a straight line.

7. The arrester with a gap and a fault indication type with a tower tilt monitoring device according to claim 6 is characterized in that: The insulating support (3) and the metal support (9) are fixedly connected.

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