Transmission wire icing thickness prediction method and device

Abstract

The invention provides a transmission wire icing thickness prediction method and device. The method comprises steps that a wire icing thickness radius and an icing radius including a wire are acquired, and a first wire icing standard thickness is acquired according to the wire icing thickness radius and the icing radius including the wire; mesoscale numerical weather prediction meteorological factor data is acquired, and the second wire icing standard thickness is acquired according to the mesoscale numerical weather prediction meteorological factor data; according to the first wire icing standard thickness and the second wire icing standard thickness, an ice thickness coefficient is acquired through calculation; weather factors in pre-determined categories and quantity are acquired according to the mesoscale numerical weather prediction meteorological factor data; the ice thickness coefficient and the weather factors are inputted to a SVM machine learning model for fitting, and a fitting function model is acquired; mesoscale numerical weather prediction meteorological factor data corresponding to to-be-detected data is inputted to the fitting function model, and a prediction ice thickness coefficient and the prediction wire icing thickness information are acquired.

Description

technical field [0001] The invention relates to the field of power grid security, in particular to a method and device for predicting the ice coating thickness of a transmission wire. Background technique [0002] The harm of icing to the power grid can be divided into five categories according to its causes: (1) Line overload. In cold, rainy and snowy weather, the ice coating on the conductors continues to grow, resulting in the continuous increase in the quality and volume of the transmission conductors, increasing the sag of the conductors, and reducing the distance to the ground. When the accumulation reaches a certain level, flashover accidents may occur . At the same time, the sag and volume of the wires increase, and under the action of wind force, it may cause the two wires or the wires to collide with the ground, causing accidents such as short-circuit tripping, burns or even burning wires. When the mass of ice coating increases further and exceeds the mechanical ...

AI Technical Summary

Problems solved by technology

(2) Adjacent stalls are not evenly covered with ice or deiced at different times

(3) Insulator string ice flash

(4) The galloping of the transmission wire damages the power equipment

When the wire dances, it will damage the tower, wires, hardware and components, causing frequent trips or even power failures

(5) Icing accidents of substation equipment

This approach relies heavily on the quality and quantity of ice coverage observations

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