Power transmission line gallop risk early-warning method based on Adaboost

Abstract

The invention provides a power transmission line gallop risk early-warning method based on Adaboost. The method comprises the following steps that internal reasons of gallop of power transmission lines are classified, and statistics is carried out on meteorological feature factors in historical gallop accidents of the power transmission lines according to the classification result; according to the information of a power transmission line to be predicted, the class, in the classification result of the internal reasons of gallop, corresponding to the power transmission line is selected, the meteorological feature factors under the conditions of the historical gallop accidents of the class are recorded to form a training sample set, a classifier is formed with an Adaboost ensemble learning algorithm, forecast data of the meteorological feature factors of the gallop of the power transmission line serve as input, and a gallop early-warning result of the power transmission line is obtained through the classifier; according to the early-warning result, the early-warning level of the gallop of the power transmission line is obtained through judgment. According to the power transmission line gallop risk early-warning method based on Adaboost, the internal reasons and the external reasons influencing the gallop of the power transmission line are comprehensively considered, the historical gallop information and the weather forecast information of the power transmission line are made full use of, and the method meets the actual conditions better; the algorithm in use is high in generalization ability, easy to encode and high in early-warning result accuracy.

Description

technical field [0001] The invention belongs to the technical field of fault risk early warning of overhead transmission lines in electric power systems, and specifically relates to a method for early warning of galloping risks of transmission lines based on Adaboost algorithm. Background technique [0002] Transmission line galloping refers to the low-frequency, large-amplitude self-excited vibration of the conductor under the action of wind force and (or) asymmetric ice coating, which is a kind of aerodynamic instability phenomenon. Galloping of transmission lines mostly occurs in winter. Its energy is large and lasts for a long time. It is easy to cause mechanical damage and electrical faults to transmission lines. In light cases, it will cause phase-to-phase flashover, damage wires, ground wires and fittings, etc., and in severe cases, it will cause broken strands. Severe accidents such as accidents, line breaks, and even tower collapses seriously threaten the safe and s...

AI Technical Summary

Problems solved by technology

[0007] 2) In practical application, the quality improvement technology and anti-galling design of transmission lines are not detailed and standardized enough, the economy and operability are poor, and there is also a lack of practical experience;

[0008] 3) The anti-dance device is developed based on different transmission line galloping mechanisms. As a result, several anti-dance devices currently used have obvious design characteristics and application limitations, and the anti-dance effect is also very different.

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