Method and device for on-line detecting iced and damaged transmission line based on elastic wave

Abstract

The invention discloses a method for detecting an iced and damaged transmission line and relates to a device for realizing the method. The method comprises the steps of: (1) arranging an elastic wave exciting element and an elastic wave sensing element on a fine transmission line and generating a fine signal, (2) amplifying the fine signal obtained from the step (1) and storing as a reference signal, (3) for monitoring, exciting the elastic wave exciting element and receiving a monitored signal and storing through the sensing element, (4) comparing the signals from the step (1) and step (3), judging the difference between the two signals so as to judge if the line is damaged, and (5) if being damaged, analyzing and comparing the difference between the signals from the step (1) and step (3), therefore positioning and identifying the damage. The method of the invention which can completely replace the traditional monitoring method is characterized by long monitoring distance, high monitoring efficiency, simple and easily operated equipment and high safety and can be applied to similar lines. The device of the invention has simple structure and operation.

Description

1. Technical field [0001] The invention relates to a method for icing and damage monitoring of transmission lines, in particular to a method for using elastic waves to carry out icing and damage monitoring for transmission lines, and at the same time relates to a device capable of realizing the method. 2. Background technology [0002] Ice and snow often cause tripping, disconnection, tower collapse, conductor galloping, insulator flashover and communication interruption of transmission lines. Ice and snow disasters have become a common problem faced by power grids in many countries. my country is one of the countries with serious icing on transmission lines, and the probability of ice damage accidents on transmission lines ranks among the highest in the world. Especially, the ice and snow disaster that occurred in southern my country in early 2008 brought huge losses to the power grid. In view of the icing and other disasters in our country, in order to reduce the occurren...

AI Technical Summary

Problems solved by technology

Transmission line detection technology has developed to the present and there are many methods, such as image detection method, infrared detection method, eddy current detection method, robot detection method, etc., but most of them are still immature and are in their infancy

For the monitoring of icing and other damages on long-distance transmission lines, traditional methods cannot meet the requirements due to the limitations of their maximum detection distance, detection accuracy and engineering applicability.

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