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Differential evadible system of electric field for unmanned aerial vehicle polling live wires and method

A live wire and drone technology, applied in the measurement of electrical variables, measurement devices, instruments, etc., can solve the problems of inaccurate results, no application examples, and no practicability, so as to improve reliability, ensure safety, Avoid volume effects

Active Publication Date: 2014-03-12
STATE GRID INTELLIGENCE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The results obtained by this method of detection are very inaccurate
[0010] 2) "On-site measurement" is mentioned in the prior art, but the measurement device (including device composition and installation location), measurement method, data processing method and judgment basis are not provided
[0011] 3) The "simulation calculation value" used for reference is mentioned in the prior art, but the simulation calculation results of lines of various voltage levels for comparison and judgment are not provided, which is not practical
[0012] 4) Application examples used to illustrate the feasibility of the method are not described in the prior art

Method used

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  • Differential evadible system of electric field for unmanned aerial vehicle polling live wires and method
  • Differential evadible system of electric field for unmanned aerial vehicle polling live wires and method
  • Differential evadible system of electric field for unmanned aerial vehicle polling live wires and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] The electric field differential obstacle avoidance system is mounted on the UAV to detect the actual 220kV line. When the UAV is flying, the fuselage is basically parallel to the direction of the power transmission wire, which is equal to the height of the side wire. The flight route is 70 meters away from the side wire. Slowly approach the wire, until it is 16 meters away from the wire (this distance range is chosen to ensure the safety of the drone, and to verify whether the alarm signal of the electric field measurement obstacle avoidance system is received at the expected position halfway). In order to reduce the flight error, the flight conditions are selected as follows:

[0080] Weather: sunny and windless;

[0081] Patrol wire: as follows Figure 6 The wire in the middle of the straight line tower shown;

[0082] Set C220=29, l=0.22m, and conduct flight test.

[0083]In the middle of the flight, the UAV receives the alarm signal from the electric field measur...

Embodiment 2

[0086] The electric field differential obstacle avoidance system is mounted on the UAV to detect the actual 500kV line. When the UAV is flying, the fuselage is basically parallel to the direction of the power transmission wire, which is equal to the height of the side wire. The flight route is 70 meters away from the side wire. meters slowly approach the wire until it is 20 meters away from the wire (this distance range is chosen to ensure the safety of the UAV and to verify whether the alarm signal of the electric field measurement obstacle avoidance system is received at the expected position halfway). In order to reduce the flight error, the flight conditions are selected as follows:

[0087] Weather: sunny and windless;

[0088] Patrol wire: as follows Figure 8 The wire in the middle of the straight line tower shown;

[0089] Set C500=56, l=0.22m, and conduct flight test.

[0090] In the middle of the flight, the UAV receives the alarm signal from the electric field me...

Embodiment 3

[0093] The electric field differential obstacle avoidance system is mounted on the UAV to detect the actual 750kV line. When the UAV is flying, the fuselage is basically parallel to the direction of the power transmission wire, which is equal to the height of the side wire. The flight route is 70 meters away from the side wire. meters slowly approach the wire, until it is 23 meters away from the wire (this distance range is chosen to ensure the safety of the UAV, and to verify whether the alarm signal of the electric field measurement obstacle avoidance system is received at the expected position halfway). In order to reduce the flight error, the flight conditions are selected as follows:

[0094] Weather: sunny and windless;

[0095] Patrol wire: as follows Figure 10 The wire in the middle of the straight line tower shown;

[0096] Set C750=77, l=0.22m, and conduct flight test.

[0097] In the middle of the flight, the UAV receives the alarm signal from the electric field...

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Abstract

The invention discloses a differential evadible system of an electric field for an unmanned aerial vehicle polling live wires and a method. The system comprises a polling unmanned aerial vehicle which is provided with an electric field evadible device. The device comprises a DSP (Digital Signal Processor) data processing module and two identical electric field measuring circuits. Each electric field measuring circuit comprises an electric field measuring sensor, a signal processing unit and an A / D (Analog to Digital) conversion unit which are connected sequentially. The A / D conversion unit is connected with an input of the data processing module, an output end of the DSP data processing module is connected with an airborne flight control system. The differential evadible system of the electric field for the unmanned aerial vehicle polling live wires provided by the invention can evade power transmission lines by the unmanned aerial vehicle, avoids collision of the unmanned aerial vehicle and the power transmission lines caused by error of GPS (Global Positioning System) navigation, overlarge gust when the unmanned aerial vehicle polls the live wires, or deviation of a predetermined course of the unmanned aerial vehicle which is not enough in flight altitude in the process of executing the task, the safety of a line patrol system of the unmanned aerial vehicle and the transmission lines is ensured, the reliability of line patrol operation is enhanced, and the safety of personnel, power grids and devices is guaranteed.

Description

technical field [0001] The invention relates to the field of obstacle avoidance when an unmanned aerial vehicle inspects a high-voltage live power line, and in particular relates to an electric field differential obstacle avoidance system and method for an unmanned aerial vehicle to inspect a live wire. Background technique [0002] In recent years, the sustained and rapid development of my country's national economy has put forward higher and higher requirements for my country's electric power industry. At present, my country has formed six inter-provincial power grids in North China, Northeast China, East China, Central China, Northwest China and South China. The contradictions have been basically alleviated. Due to our country's vast territory and complex terrain, in order to provide safe and reliable power supply, the automation and modernization of line inspection maintenance has increasingly shown its urgency. [0003] The use of UAV aerial operations for power line i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D1/10G01R29/00
Inventor 郑天茹王滨海王骞陈西广刘俍张晶晶
Owner STATE GRID INTELLIGENCE TECH CO LTD
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