Laser flight detection method and implementation for sag of electric power overhead cable

A detection method, electric power overhead technology, applied in the field of laser flight detection, can solve the problems of system operation processing and complex structure, high cost, complex environment communication, etc.

Inactive Publication Date: 2021-09-10
NANJING INST OF TECH +1
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  • Abstract
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Problems solved by technology

[0007] Typical position detection methods include image detection methods, global navigation satellite positioning detection methods, sonar/microwave detection methods, etc. These methods are less affected by terrain, landform, temperature, climate, span, etc., and the detection is convenient and ef...

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  • Laser flight detection method and implementation for sag of electric power overhead cable
  • Laser flight detection method and implementation for sag of electric power overhead cable
  • Laser flight detection method and implementation for sag of electric power overhead cable

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Embodiment Construction

[0058] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0059] 1. Overview

[0060] In this example, multi-rotor flight control, GPS navigation and control, high-precision laser measurement control, etc. are applied to the detection and monitoring of the sag, distance to the ground and its distribution of high-voltage power overhead transmission cables. Solve the complex terrain, landform and long-span and long-distance problems of cables in the detection; establish a high-precision sag distribution model based on the catenary equation or parabolic equation of the transmission wire, and combine the long-stroke laser ranging technology to solve the existing For the accuracy problem in position detection, develop a low-cost, high-reliability flying laser embedded monitoring system for the sag, distance to the ground and its distribution of high-voltage overhead cables for power overhead cable construc...

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Abstract

The invention discloses a laser flight detection method and implementation for the sag of an electric power overhead cable, and the method comprises the steps: enabling a rotor aircraft to fly to a position above a detected overhead cable through an airborne laser radar/distance measuring sensor of the rotor aircraft, and carrying out the measurement; then screening measurement data, wherein the measurement data are used for calculating the sag of the aerial cable and the distance to the ground; 1) the measuring method for a certain measuring point of any cable includes the steps that the rotorcraft keeps the flight height and the flight speed unchanged, and transversely sweeps the cable at a constant speed in the flight detection plane in the direction perpendicular to the trend of the cable; meanwhile, the laser radar/distance measuring sensor emits a detection laser beam sequence which is perpendicular to the flight detection plane and faces downwards, and cable and obstacle height data below the flight detection plane are continuously obtained; and 2) measurement data is screened by using a fuzzy filter to obtain effective data.

Description

technical field [0001] The invention belongs to the application of unmanned aerial vehicles in the detection of overhead cables, in particular to a laser flight detection technology and implementation method for the sag of electric power overhead cables. Background technique [0002] Aerial cables are the main implementation form of power transmission lines, which have the characteristics of large span, long distance, wide coverage area, complex and diverse terrain and landform. The sag, height from the ground and its distribution of power cables will have a direct impact on the safe and stable operation of the power system, and are also important indicators for power line construction and system operation. There are many influencing factors, and the influencing mechanism is relatively complex. Abnormalities and changes such as the stress of the conductor, icing, ambient wind speed, topography of the covered area, and moving objects will cause obvious changes in the cable sa...

Claims

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Application Information

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IPC IPC(8): G01S17/02G01S17/08
CPCG01S17/02G01S17/08
Inventor 张建华杨秋苹杜欣如陈晓建葛红宇吴欣原高世平刘金梅李鲁
Owner NANJING INST OF TECH
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