UHV AC power transmission line electricity testing device and system based on unmanned aerial vehicle

Abstract

The invention discloses an ultra-high-voltage alternating-current power transmission line electricity testing device and system based on an unmanned aerial vehicle, and relates to the technical field of power equipment live detection. The device comprises an unmanned aerial vehicle, an electricity testing module and a ground control module, and the electricity testing module is installed at the position of an undercarriage of the unmanned aerial vehicle and can perform non-contact type and contact type electricity testing operations on a power transmission line in the air. The electricity testing module is composed of a first electricity testing module, a second electricity testing module and a data communication module. According to the invention, long-distance, safe and efficient ultra-high-voltage power transmission line unmanned aerial vehicle electricity testing operation can be realized, the manual risk is significantly reduced, and the detection efficiency and accuracy are improved.

Description

Technical Field

[0001] This invention belongs to the field of power safety detection technology. Background Technology

[0002] In the operation and maintenance of ultra-high voltage transmission lines, voltage testing is a crucial step to ensure operational safety. Traditional voltage testing methods mainly rely on manual climbing of towers or conductors to perform voltage testing through direct contact or the use of insulated tools. This method is not only labor-intensive and inefficient, but also exposes operators to a high-voltage, high-electric-field environment for extended periods, posing a significant risk of electric shock and falls from heights, resulting in substantial safety concerns. While the widespread application of drone technology in the power industry has enabled existing live-line working platforms to perform some inspection tasks, a systematic technical solution is still lacking for voltage testing, making it difficult to achieve efficient and standardized non-contact voltage testing. Summary of the Invention

[0003] The purpose of this invention is to provide a device and system for detecting voltage in UAV-based ultra-high voltage AC transmission lines that combines non-contact and contact methods, and enables ground-based visual display and audible and visual alarms through wireless data communication.

[0004] The present invention includes a drone, an electrical detection module, and a ground control module, wherein the electrical detection module is connected to the drone's landing gear.

[0005] The voltage detection module of this invention includes a first voltage detection module, a second voltage detection module, and a data communication module. The ground control module includes a signal receiving module, a signal processing module, a display module, and an alarm module.

[0006] The first voltage detection module of the present invention includes: a power frequency electromagnetic field probe, which is used to acquire the electric field strength detection signal of the ultra-high voltage AC transmission line under test, so as to perform non-contact voltage detection on the ultra-high voltage AC transmission line; a second voltage detection module is used to contact the ultra-high voltage AC transmission line under test and acquire the voltage detection signal of the ultra-high voltage AC transmission line under test, so as to perform contact voltage detection on the ultra-high voltage AC transmission line under test; and a data communication module is used to send the electric field strength detection signal and the voltage detection signal to a ground control module.

[0007] The first voltage detection module of this invention includes an electric field flat panel sensor and a sampling and analysis circuit. The sampling and analysis circuit is connected to both the electric field flat panel sensor and the data communication module. The electric field flat panel sensor is used to acquire a first electric field strength detection signal from the ultra-high voltage AC transmission line under test. The sampling and analysis circuit is used to perform signal filtering and signal amplification on the first electric field strength detection signal to determine a second electric field strength detection signal. The data communication module sends the second electric field strength detection signal to the ground control module.

[0008] The second voltage detection module of the present invention includes: a voltage detector probe and a mechanical pressure sensor. The voltage detector probe is a needle-type three-dimensional contact voltage detector probe, which is used to directly contact the ultra-high voltage AC transmission line under test and acquire the voltage detection signal of the ultra-high voltage AC transmission line under test; the mechanical pressure sensor is installed next to the voltage detector probe and is used to send a contact signal to the data communication module when the voltage detector probe and the ultra-high voltage AC transmission line under test have reliable contact.

[0009] The signal receiving module of this invention is used to receive the electric field strength detection signal and the voltage detection signal sent by the data communication module; the signal processing module is used to determine the voltage detection conclusion based on the electric field strength detection signal and the voltage detection signal. The display module is used to display the electric field strength detection signal, the voltage detection signal, the contact signal, and the voltage detection conclusion; the alarm module adopts an audible and visual alarm, which issues an audible and visual alarm when the ultra-high voltage AC transmission line under test is found to be energized.

[0010] The drone of the present invention includes an airborne camera; wherein the camera is used to observe the contact between the electroscope probe and the ultra-high voltage AC transmission line under test, so as to adjust the flight position of the drone.

[0011] The beneficial effects of this invention are: (1) This invention enables voltage testing through a drone platform, avoiding direct human contact with high-voltage conductors and significantly improving operational safety; (2) By combining non-contact electric field detection with contact voltage detection, multi-dimensional and multi-mode voltage detection can be achieved, thereby improving the accuracy and reliability of judgment; (3) By introducing a mechanical pressure sensor into the contact voltage detection process, the contact state between the voltage detector probe and the transmission line is judged, avoiding false voltage detection caused by accidental contact or false contact, and further improving the safety and reliability of contact voltage detection. (4) It adopts data communication and interacts with the ground control module to realize the remote display of voltage, electric field signals and voltage detection results, and has the function of sound and light alarm to improve the efficiency of information transmission. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a device and system for detecting voltage on ultra-high voltage AC transmission lines based on unmanned aerial vehicles (UAVs) provided in an embodiment of the present invention. Figure 2 This is a circuit diagram of the voltage detection module in an embodiment of the present invention; Figure 3 This is a circuit diagram of the ground control module in an embodiment of the present invention. Detailed Implementation

[0013] This invention discloses a UAV-based voltage detection device and system for ultra-high voltage AC transmission lines, relating to the field of live-line testing technology for power equipment. The system includes a UAV, a voltage detection module, and a ground control module. The voltage detection module is installed on the UAV's landing gear and can perform both non-contact and contact voltage detection operations on the transmission line from the air. The voltage detection module consists of a first voltage detection module, a second voltage detection module, and a data communication module. The first voltage detection module uses a power frequency electromagnetic field probe and an electric field flat panel sensor to acquire the electric field strength signal of the line, achieving non-contact voltage detection. The second voltage detection module acquires the voltage detection signal through a needle-type three-dimensional contact voltage detector probe and a mechanical pressure sensor, achieving reliable contact voltage detection. The data communication module is used to transmit the detection signal to the ground control module in real time. The ground control module includes signal receiving, signal processing, display, and alarm units, which can generate voltage detection conclusions and implement audible and visual alarms when the line is energized. Furthermore, the UAV is equipped with an onboard camera to assist in observing the probe contact status and correcting the flight position. This invention enables long-distance, safe, and efficient unmanned aerial vehicle (UAV) voltage testing of ultra-high voltage transmission lines, significantly reducing human risk and improving testing efficiency and accuracy.

[0014] Given the high safety risks, limited testing methods, and lack of remote and digital display in existing manual voltage testing technologies, there is an urgent need to develop a voltage testing device and method for ultra-high voltage transmission lines that can be mounted on drones. By using drones as a carrier and combining them with intelligent testing technology, operators can remotely control the entire voltage testing process from the ground, thereby significantly improving the safety and efficiency of voltage testing operations and providing a new technical path for the standardized voltage testing and intelligent maintenance of transmission lines.

[0015] The purpose of this invention is to overcome the problems of high safety risks, single detection method, and lack of remote and digital display in the existing technology of manual voltage testing. It provides a voltage testing device and system for ultra-high voltage AC transmission lines based on drones. The device can realize dual-mode voltage testing that combines non-contact and contact methods. It can realize ground visualization display and sound and light alarm through wireless data communication, thereby improving the safety, accuracy and intelligence level of voltage testing operations.

[0016] To achieve the above objectives, the present invention adopts the following technical solution: A voltage detection device and system for ultra-high voltage AC transmission lines based on unmanned aerial vehicles (UAVs) includes a UAV, a voltage detection module, and a ground control module, wherein the voltage detection module is connected to the UAV landing gear. The voltage testing module includes a first voltage testing module, a second voltage testing module, and a data communication module; The ground control module includes a signal receiving module, a signal processing module, a display module, and an alarm module.

[0017] The first voltage detection module includes a power frequency electromagnetic field probe or an electric field flat plate sensor and a sampling and analysis circuit. The power frequency electromagnetic field probe is used to acquire the electric field strength detection signal of the ultra-high voltage AC transmission line under test, so as to perform non-contact voltage detection on the ultra-high voltage AC transmission line. The sampling and analysis circuit performs signal filtering and amplification on the electric field strength detection signal to obtain a second electric field strength detection signal. The data communication module sends the second electric field strength detection signal to the ground control module; The second voltage detection module includes a needle-type three-dimensional contact voltage detector probe and a mechanical pressure sensor. The voltage detector probe is used to directly contact the ultra-high voltage AC transmission line under test and acquire voltage detection signals for contact voltage detection of the line under test. The mechanical pressure sensor is installed next to the electroscope probe and is used to send a contact signal to the data communication module when the probe makes reliable contact with the circuit.

[0018] The signal receiving module is used to receive the electric field strength detection signal and voltage detection signal sent by the data communication module; The signal processing module determines the electrical testing conclusion based on the signal; The display module is used to display the electric field strength detection signal, voltage detection signal, contact signal, and voltage detection conclusion; The alarm module uses an audible and visual alarm, which will issue an audible and visual alarm when the ultra-high voltage AC transmission line under test is found to be energized.

[0019] The drone includes an onboard camera, which is used to observe the contact between the electroscope probe and the ultra-high voltage AC transmission line under test, so as to adjust the drone's flight position.

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments: like Figure 1 As shown, a voltage testing device and system for ultra-high voltage AC transmission lines based on unmanned aerial vehicles (UAVs) includes a UAV, a voltage testing module, and a ground control module. The voltage testing module is installed on the landing gear of the UAV.

[0021] A drone is used to carry the voltage detection module and achieve flight control. The drone can be a multi-rotor drone or a vertical take-off and landing fixed-wing drone, with hovering, precise positioning, and remote control functions. An onboard camera is installed on the drone to observe the contact between the voltage detector probe and the ultra-high voltage AC transmission line under test, so as to adjust the drone's flight position and attitude, ensuring the reliability and safety of the voltage detection operation.

[0022] like Figure 2 As shown, the voltage detection module in this embodiment includes a data communication module, a first voltage detection module, and a second voltage detection module. The modules are electrically connected to each other through a serial port or an analog signal line.

[0023] In this embodiment, the data communication module is mainly composed of a microcontroller, used to receive, process, and forward signals from each voltage detection module. The data communication module is equipped with TXD and RXD serial ports, which are connected to the first voltage detection module and the second voltage detection module through serial ports to realize bidirectional communication of detection data.

[0024] As shown in the lower right part of the figure, the first voltage detection module includes a microcontroller U5 and an interface for an electric field flat panel sensor connected to it. The electric field signal collected by the electric field flat panel sensor is input to U5. After sampling and processing of the signal by the corresponding pins, the processed electric field strength detection signal is sent to the data communication module through the TXD and RXD serial port pins. The first voltage detection module is equipped with a power supply filtering circuit and a voltage regulator circuit to provide a stable operating voltage for the microcontroller.

[0025] As shown in the upper right part of the figure, the second voltage detection module includes a microcontroller U4, an electroscope probe interface, and a mechanical pressure sensor interface. The voltage detection signal collected by the electroscope probe is input to the microcontroller U4 after being processed by the front-end signal processing circuit, and the contact status signal output by the mechanical pressure sensor is also input to U4. U4 collects and analyzes the above signals, and sends the voltage detection signal and contact signal to the data communication module through the serial port TXD / RXD. In addition, the second voltage detection module also includes circuit structures for signal amplification and voltage adaptation to ensure that the high-voltage signal can be safely sampled by the microcontroller after processing.

[0026] In each module, the microcontroller is connected to the power system via power supply VCC and GND, and is equipped with necessary clock circuits, reset circuits and filtering components to ensure stable and reliable system operation.

[0027] like Figure 3 As shown, the ground control module in this embodiment mainly includes a signal receiving module, a signal processing module, a display module, and an alarm module. Each module is electrically connected through a serial port, an I²C bus, or a control signal line.

[0028] On the left side of the diagram is the signal receiving module, which includes a microcontroller U1. U1 is equipped with TXD0 and RXD0 serial port pins for establishing a serial connection with the data communication module of the voltage detection module, receiving electric field strength detection signals, voltage detection signals, and contact signals transmitted from the UAV. Multiple sets of I / O pins on U1 are used for data line connections with the signal processing module. Simultaneously, the module is connected to the power supply system via VCC and GND pins to ensure stable operation.

[0029] As shown in the middle of the diagram, the signal processing module consists of microcontroller U2, which analyzes the data uploaded by the signal receiving module and generates a voltage detection conclusion. U2 has multiple I / O ports that connect to U1 for signal interaction. Furthermore, the SCL and SDA pins of U2 are connected to the corresponding pins of the display module via an I²C bus to transmit detection data, contact status, and voltage detection results to the display module. U2 is also connected to the alarm module via control signal lines to control the alarm status.

[0030] As shown in the upper right part of the figure, this is the display module, which includes VCC and GND ports for connecting to the power supply, and SCL and SDA pins for communicating with the signal processing module. The display module obtains display data from the signal processing module via the I²C bus and uses it to display electric field strength detection signals, voltage detection signals, contact signals, and voltage detection conclusions.

[0031] As shown in the lower right part of the figure, this is the alarm module, which includes a buzzer, an indicator LED1, and a driver circuit composed of a transistor Q1. When the signal processing module outputs a high-level alarm signal to the control terminal, the transistor Q1 conducts, causing the buzzer to be powered on and emit a sound, and illuminating LED1, thus realizing the audible and visual alarm function. The alarm module is powered by VCC and connected to the rest of the system through a common ground wire.

[0032] The working process of the system of this invention is as follows: First, the operator remotely controls the drone via a ground control module, bringing the drone, carrying a voltage detection module, close to the ultra-high-voltage AC transmission line to be tested. When the drone maintains a safe distance from the transmission line, the first voltage detection module activates. An electric field flat panel sensor collects the electric field signals around the line, which are then processed by a sampling and analysis circuit to generate a second electric field strength detection signal. The signal processing module determines the line's energization status based on the received electric field signal, achieving non-contact preliminary voltage detection.

[0033] When further confirmation or contact testing is required, the operator adjusts the drone's flight position via its flight control system to ensure reliable contact between the voltage detector probe and the power line under test. Once the mechanical pressure sensor detects reliable contact, it triggers the acquisition of a voltage detection signal, which is transmitted to the ground control module via the data communication module. The signal processing module analyzes the voltage detection signal and, combined with the electric field detection results, outputs the final voltage detection conclusion. If the line is energized, the alarm module issues an audible and visual alarm signal and displays a "energized" message on the display module.

[0034] Through the above process, this invention achieves a dual detection mode combining non-contact and contact voltage detection. Non-contact detection is used to quickly determine the electric field distribution of the line, while contact detection is used to accurately confirm the energized state of the line. The two mutually verify each other, significantly improving the reliability and accuracy of the voltage detection results.

Claims

1. A voltage detection device and system for ultra-high voltage AC transmission lines based on unmanned aerial vehicles (UAVs), characterized in that: It includes a drone, an electrical detection module, and a ground control module, with the electrical detection module connected to the drone's landing gear.

2. The UAV-based ultra-high voltage AC transmission line voltage detection device and system according to claim 1, characterized in that: The voltage detection module includes a first voltage detection module, a second voltage detection module, and a data communication module. The ground control module includes a signal receiving module, a signal processing module, a display module, and an alarm module.

3. The UAV-based ultra-high voltage AC transmission line voltage detection device and system according to claim 2, characterized in that: The first voltage detection module includes: a power frequency electromagnetic field probe, which is used to acquire the electric field strength detection signal of the ultra-high voltage AC transmission line under test, so as to perform non-contact voltage detection on the ultra-high voltage AC transmission line; the second voltage detection module is used to contact the ultra-high voltage AC transmission line under test and acquire the voltage detection signal of the ultra-high voltage AC transmission line under test, so as to perform contact voltage detection on the ultra-high voltage AC transmission line under test; the data communication module is used to send the electric field strength detection signal and the voltage detection signal to the ground control module.

4. The UAV-based ultra-high voltage AC transmission line voltage detection device and system according to claim 3, characterized in that: The first voltage detection module includes an electric field flat panel sensor and a sampling and analysis circuit. The sampling and analysis circuit is connected to both the electric field flat panel sensor and the data communication module. The electric field flat panel sensor is used to acquire a first electric field strength detection signal from the ultra-high voltage AC transmission line under test. The sampling and analysis circuit is used to perform signal filtering and signal amplification on the first electric field strength detection signal to determine a second electric field strength detection signal. The data communication module sends the second electric field strength detection signal to the ground control module.

5. The UAV-based ultra-high voltage AC transmission line voltage detection device and system according to claim 3, characterized in that: The second voltage detection module includes: a voltage detector probe and a mechanical pressure sensor. The voltage detector probe is a needle-type three-dimensional contact voltage detector probe, which is used to directly contact the ultra-high voltage AC transmission line under test and acquire the voltage detection signal of the ultra-high voltage AC transmission line under test; the mechanical pressure sensor is installed next to the voltage detector probe and is used to send a contact signal to the data communication module when the voltage detector probe and the ultra-high voltage AC transmission line under test have reliable contact.

6. The UAV-based ultra-high voltage AC transmission line voltage detection device and system according to claim 2, characterized in that: The signal receiving module receives the electric field strength detection signal and the voltage detection signal sent by the data communication module; the signal processing module determines the voltage detection conclusion based on the electric field strength detection signal and the voltage detection signal. The display module displays the electric field strength detection signal, the voltage detection signal, the contact signal, and the voltage detection conclusion; the alarm module uses an audible and visual alarm to issue an audible and visual alarm when the ultra-high voltage AC transmission line under test is found to be energized.

7. The UAV-based ultra-high voltage AC transmission line voltage detection device and system according to claim 1, characterized in that: The drone includes an onboard camera; wherein the camera is used to observe the contact between the electroscope probe and the ultra-high voltage AC transmission line under test, so as to adjust the flight position of the drone.

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