Small-sized radar-based wide-area icing monitoring and pre-warning method for power transmission line

Abstract

The invention discloses a small-sized radar-based wide-area icing monitoring and pre-warning method for a power transmission line. The method comprises the following steps: 1, arranging and mounting a radar device and a microclimate sensor according to a corridor condition of the power transmission line; 2, setting a time interval-t, extracting weather observation data in real time at the time interval serving as a unit, transmitting the data back, and caching the data into a database; 3, analyzing radar data, and when a snow condition is met, deducing the icing condition of the line via a power transmission line icing and ice melting calculation model according to data of the microclimate sensor; 4, setting a pre-warning threshold value according to a tower parameter, and when the icing value is greater than the threshold value, performing icing pre-warning. According to the small-sized radar-based wide-area icing monitoring and pre-warning method, the small-sized radar supplies the detailed weather condition of a line corridor; the small-sized radar-based wide-area icing monitoring and pre-warning method has the advantages of wide monitoring range and high weather data precision. In the method, the tower parameter is used for icing thickness pre-warning for the first time; compared with the existing method for pre-warning the icing thickness based on the line theory, the method is higher in accuracy.

Description

technical field [0001] The invention relates to a monitoring and early warning method, in particular to a small radar-based wide-area ice-covered monitoring and early warning method for transmission lines. Background technique [0002] Icing refers to the solidification of precipitation, such as rain, snow, freezing rain, or fog droplets, when it encounters objects with a temperature below 0°C. It usually includes frozen residual snow, concave and convex ice ruts, and hard ice formed by snow melt water in cold seasons. In the power industry, icing can cause many types of accidents, for example, overload accidents caused by excessive icing on lines; ice flash accidents on insulators; uneven icing or deicing accidents at different times; Galloping is prone to occur, causing galloping accidents; due to the large amplitude and long duration of galloping, it is easy to cause phase-to-phase flashover, damage ground wires, wires, fittings, etc., resulting in accidents such as line...

AI Technical Summary

Problems solved by technology

This method needs to arrange a lot of ultrasonic transceivers on the transmission line, which is inconvenient to install and has a large maintenance workload, and the practical application feasibility is low.

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