Monitoring and early warning method and monitoring and early warning device for severe weather of power transmission line

Abstract

The invention belongs to the technical field of power transmission line monitoring, and particularly relates to a monitoring and early warning method and device for the severe weather of a power transmission line. The method comprises the following steps that a power transmission line and a tower which are liable to break down are selected; a designated area is scanned through a radar to obtain a radar echo map of the power transmission line and the tower; data processing is carried out on the radar echo map, geographic information is arranged on the bottommost layer, power transmission line and tower information is arranged on the middle layer, and echo information is arranged on the uppermost layer by adopting the hierarchical display principle; a linear distance L between the radar echo position and the power transmission line coordinate is acquired by identifying the shortest distance between the radar echo position and the power transmission line coordinate; the distance between the severe weather and the power transmission line and the distance between the severe weather and the tower are judged through the positive and negative values of the radial speed R in the radar echo map, and if the severe weather is close to the power transmission line and the tower, the remaining time T from the severe weather to the monitored power transmission line and the tower is obtained through the direct distance L and the radial speed R, namely T=L / R.

Description

technical field [0001] The invention belongs to the technical field of transmission line monitoring, and in particular relates to a monitoring and early warning method and a monitoring and early warning device for bad weather on a transmission line. Background technique [0002] In actual operation, the stability and safety of transmission lines is of great significance, and the biggest threat to transmission lines is severe weather. Therefore, severe weather monitoring and early warning of transmission lines are very important for power grid operation and maintenance. [0003] At present, transmission line meteorological monitoring technology is mainly divided into distributed monitoring and wide-area monitoring; distributed monitoring is mainly based on the deployment of small micro-meteorological sensors on transmission line towers, mainly for local and micro-topographic meteorological monitoring, with insufficient mobility and small monitoring coverage , Insufficient ear...

AI Technical Summary

Problems solved by technology

[0003] At present, transmission line meteorological monitoring technology is mainly divided into distributed monitoring and wide-area monitoring; distributed monitoring is mainly based on the deployment of small micro-meteorological sensors on transmission line towers, mainly for local and micro-topographic meteorological monitoring, with insufficient mobility and small monitoring coverage , Insufficient early warning ability

Wide-area monitoring is mainly based on satellite monitoring. Satellite cloud images cover a large area, but they are poorly targeted. It is difficult to detect small-scale areas, and the accuracy needs to be improved.

Due to the different transmission lines that need to be paid attention to in different severe weather environments, there is a lack of mobile monitoring devices for transmission lines in severe weather

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