A method and device for self-heating and melting ice of high-voltage power line conductors

Abstract

The invention discloses a high-voltage power-line conductor self-heating deicing method and device. The device comprises a deicing conductor and an icing monitoring unit. The deicing conductor comprises a steel conductor core and an aluminum conductor wound on the steel conductor core. Two or more inner conductors having surfaces coated with insulating paint are wound on an inner layer of the aluminum conductor along the winding direction of the aluminum conductor, and two or more outer conductors having surfaces coated with insulating paint are wound on an outer layer of the aluminum conductor along the direction opposite to the winding direction of the inner conductors. The invention adopts the principle that a metal conductor forms eddy-current heating in a current-carrying conductor to realize the aim of self-heating deicing of power lines without power failure. Compared with the existing direct-current deicing technology, the invention has the advantages that the structure is simple, the deicing cost is low, high safety and reliability is achieved, time and labor are saved, all operation is completed automatically, power failure and human intervention are avoided, safety incidents are prevented and power loss and power consumption are reduced.

Description

technical field [0001] The invention relates to a method and device for self-heating and melting ice of high-voltage power line conductors, belonging to the technical field of electrical engineering. Background technique [0002] With the wide application of DC deicing devices in the power system, while achieving good results in the process of deicing, the following problems also arise: 1. In a line, due to the different geographical locations, the distance of each line is different. The icing situation is different (unless there is a severe ice disaster like 2008), according to observations in recent years, the most serious icing of a line occurs in one or two relatively high geographical locations. distance, and the DC ice melting technology needs to short-circuit the entire line and apply a large current, which will cause damage to the line without ice, resulting in annealing of the steel wire of the wire, and a decrease in strength; It is time-consuming, labor-intensive...

AI Technical Summary

Problems solved by technology

[0002] With the wide application of DC deicing devices in the power system, while achieving good results in the process of deicing, the following problems also arise: 1. In a line, due to the different geographical locations, the distance of each line is different. The icing situation is different (unless there is a severe ice disaster like 2008), according to observations in recent years, the most serious icing of a line occurs in one or two relatively high geographical locations. distance, and the DC ice melting technology needs to short-circuit the entire line and apply a large current, which will cause damage to the line without ice, resulting in annealing of the steel wire of the wire, and a decrease in strength; Time-consuming, labor-intensive, requiring a lot of manpower and material resources, and there are certain safety risks; 3. During the ice-melting process, a large amount of electric energy is consumed, and the reliability of the power grid is reduced

Therefore, the current DC ice melting method has many disadvantages and cannot meet the needs of ice melting.

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