Method for determining safety distance between overhead transmission line and civilian unmanned aerial vehicle

Abstract

The invention discloses a method for determining a safety distance between an overhead transmission line and a civilian unmanned aerial vehicle. The method comprises the following steps: A. determining an electrical insulation safety distance Di between the unmanned aerial vehicle and the transmission line based on a transmission line design specification; B, in consideration of the corona radio interference of the overhead transmission line, calculating a required protection distance Dp according to the characteristics of lateral propagation attenuation of interference; C. in consideration ofthe motion characteristics of the unmanned aerial vehicle, calculating a yaw distance caused by speed change of the unmanned aerial vehicle, a response delay buffer distance of the response delay anda hovering distance margin of the response delay, and adding the above distances to obtain the safety distance Dm between the unmanned aerial vehicle and the transmission line; and D. performing fusion calculation on the Di, Dp and Dm by using the Dimpster combination rule in the D-S evidence theory to finally obtain the safety distance DL between the overhead transmission line and the civilian unmanned aerial vehicle. By adopting the method, the leakage of the existing method for determining the safety distance between the civilian unmanned aerial vehicle and the overhead transmission line is compensated, and a basis is provided for obstacle avoidance early warning of the unmanned aerial vehicle.

Description

technical field [0001] The invention belongs to the field of power transmission line safety, and in particular relates to the safety technology of overhead power transmission lines and civilian unmanned aerial vehicles. Background technique [0002] With the rapid development of drone technology, small and medium-sized professional civilian drones represented by multi-rotor drones have been widely used in various industries such as aerial photography, agriculture, express delivery, electric power, and rescue. At the same time, the market for consumer-grade civilian drones for entertainment is expanding rapidly. With the increase of UAV applications, the safety of UAV flight has become increasingly prominent. [0003] The flight height of civilian drones is mostly concentrated in the range of tens of meters to hundreds of meters, which is similar to the height of overhead power lines, and there is a possibility of collision. In addition, the presence of strong electromagnet...

AI Technical Summary

Problems solved by technology

[0008] Although industries such as electric power and drones have researches on safety distances, each study only focuses on a single factor affecting safety distances, and the determined safety distances are incompatible with each other, and there are still large differences in values.

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