Method for measuring arc sag of wire of power transmission line based on image processing

Abstract

The invention discloses a method for measuring the arc sag of a wire of a power transmission line based on image processing. The method comprises the following steps of: firstly, acquiring an image signal of the power transmission line through a fixed-focus camera, transmitting the acquired image signal of the power transmission line back to a monitoring center in real time in a video stream form, and capturing a digital image of the power transmission line to be monitored from the video stream by the monitoring center so as to acquire a monitored target image; secondly, preprocessing the monitored target image; and finally, calculating data of the preprocessed image, thus obtaining the arc sag of the power transmission line. In the method for measuring the arc sag of the wire of the power transmission line based on image processing, the number of used equipment is small, the structure is simple and the cost is low; an image processing technology and a wireless transmission technology can be used fully; the monitoring center can remotely process the data and globally monitor the condition of the arc sag of a power network conveniently; and furthermore, the data of the arc sag can be acquired only through image processing and simple calculation instead of a precise math model, so the method is extremely simple and convenient to implement.

Description

technical field [0001] The invention belongs to the technical field of machine vision and electric power system online monitoring, and relates to a method for measuring the sag of a transmission line conductor, in particular to a method for measuring the sag of a transmission line conductor based on image processing. Background technique [0002] The problem of observing the sag of the conductor will be encountered in the operation and construction of the high-voltage line. Sag measurement plays an important role in the safe operation of control lines. Especially after a period of time for new lines, the conductors will sag to varying degrees. For safety, it is necessary to carry out sag monitoring to provide reliable data for safe operation. The common sag is too large, which may cause a short circuit due to a large swing under the action of electrodynamic force in strong winds or faults. At the same time, an accident occurred due to insufficient distance between the inte...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for measuring the sag of a transmission line conductor based on image processing, which solves the problem that the existing measurement method for the sag of a transmission line conductor has low precision, inconvenient measurement, and difficult acquisition of model parameters in complex environments. The problem

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