Method for measuring distance of obstacle under overhead transmission line based on unmanned aerial vehicle

Abstract

The invention relates to a method for measuring the distance of an obstacle under an overhead transmission line based on an unmanned aerial vehicle. The method is characterized by after a range finder is carried on the unmanned aerial vehicle, enabling the unmanned aerial vehicle to keep flying at a fixed speed and at a fixed distance with a conductor of the overhead transmission line; measuring the distance and an included angle of the obstacle under the overhead transmission line through the range finder; calculating the shortest distance between the obstacle under the overhead transmission line and the conductor through the distance measurement coordinate model of the obstacle under the unmanned aerial vehicle overhead transmission line; and comparing the shortest distance between the obstacle under the overhead transmission line and the conductor with the safety distance of the voltage level of the power transmission line to obtain a tree obstacle hidden danger detection result. The method solves the problem of hidden danger of obstacles under the power transmission line, provides more efficient, more comprehensive, more convenient, more accurate and more intelligent hidden danger analysis technical support for the operation and maintenance units, has the advantages of improving the line inspection efficiency of power grid enterprises, reducing the probability of power grid accidents, reducing line fault power failure loss and improving the power supply safety and reliability of the power grid, and meanwhile, the method has the important significance in reducing the operation risk of personnel and guaranteeing the operation safety.

Description

technical field [0001] The invention belongs to the technical field of power transmission lines, and relates to a detection method for overhead power transmission lines, in particular to a method for measuring the distance of obstacles under the overhead power transmission line based on an unmanned aerial vehicle. Background technique [0002] With the rapid growth of China's economy, the scale of the power grid is gradually expanding, and the long-distance transmission lines are also increasing. However, my country's vast territory and complex and changeable terrain make it very difficult to detect potential safety hazards in transmission lines. At present, the hidden dangers and defects of transmission lines are mainly hidden dangers in transmission line corridors, especially hidden dangers of trees under transmission lines, illegal construction and illegal buildings in transmission line corridors. endanger the safety of power transmission lines. [0003] At present, the ...

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Problems solved by technology

[0002] With the rapid growth of China's economy, the scale of the power grid is gradually expanding, and the long-distance transmission lines are also increasing. However, my country's vast territory and complex and changeable terrain make it very difficult to detect potential safety hazards in transmission lines.

At present, the hidden dangers and defects of transmission lines are mainly hidden dangers in transmission line corridors, especially hidden dangers of trees under transmission lines, illegal construction and illegal buildings in transmission line corridors. endanger the safety of power transmission lines

[0003] At present, the collection method of transmission line tree barrier information is based on manual tree barrier hidden danger information collection. Traditional transmission line channel manual inspection, its working environment is difficult, personal safety faces challenges, and it is necessary to carry heavy equipment such as total station and range finder. Traditional equipment has many problems such as poor manual inspection effect, low work efficiency, and high labor cost, and has been unable to meet the current social requirements for high-efficiency inspection, high workload, and refined efficiency of power grids.

If the obstacles under the transmission line route cannot be found in time, it will cause hidden dangers to the safety of the transmission line operation of the power grid

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