Method for avoiding high-voltage overhead line grounding failure by adopting bird repellent shielding cover

Abstract

The invention provides a method for avoiding a high-voltage overhead line grounding failure by adopting a bird repellent shielding cover, and the method belongs to the field of line protection. The method is characterized in that a T-shaped middle shielding cover is arranged at a joint part of a lead wire and an insulator string; two outer side opening ends along the direction of the lead wire ofthe T-shaped middle shielding cover are provided with a left gun head cover and a right gun head cover separately; and the T-shaped middle shielding cover is integrally fixed / connected between the left gun head cover and the right gun head cover in an inserting or riveting manner. The method adopts a defensive shielding protection method for parts prone to be nested by birds on an overhead line ora pole tower, and the defensive shielding protection cover is arranged at the joint part of the lead wire and the insulator string for insulated shielding, the nesting difficulty of birds is increased, effective isolation between the bird nest and an electric conductor is generated, the electrical insulation distance is increased, the grounding failure of a high-voltage power supply line is avoided, and the method can be widely applied to the protection field of various kinds of high-voltage overhead power transmission lines adopting a cross-arm type line fixing pattern.

Description

technical field [0001] The invention belongs to the field of power line protection, and in particular relates to a defensive bird-repelling shielding method for high-voltage power transmission overhead lines and tower poles. Background technique [0002] The insulator part of the 35kv pole tower in our company's jurisdiction adopts the cross-arm type line fixing mode, which is characterized in that the head end of the high-voltage insulator string is connected to the cross arm of the line tower pole, and its end is connected to the bare wire of the overhead transmission line; here In a fixed mode, the high-voltage insulator string (also known as the insulating arm) is in the same horizontal plane as the bare conductor of the transmission overhead line, or the angle between the plane where the bare conductor and the insulator string are located and the horizontal plane is less than 30 degrees, and the insulator string The central axis intersects the central axis of the bare w...

AI Technical Summary

Problems solved by technology

[0011] Active bird repelling in the form of sound, light, shadow, etc., on the one hand, requires a special power supply for driving, and the reliability and effective working time of the driving power supply restrict the normal working time of the bird repelling device; on the other hand, the bird repellent The class has a certain adaptability to repeated sound, light and shadow signals, and the bird repelling effect of repeated sound, light and shadow signals will be weakened or reduced after a long time; on the other hand, due to the existence of mechanical moving parts or electronic Circuit, in the wild environment, the working reliability of moving parts or electronic circuit parts will be affected to a certain extent. In severe cases, the entire bird repelling device will not be able to send out sound, light, and shadow signals, and lose the bird repelling effect.

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