Method for performing equipotential live line work by putting +/-800kV tangent tower electric transmission line into electric field

Abstract

The invention relates to a method for performing equipotential live line work by putting a + / -800kV tangent tower electric transmission line into an electric field. The method comprises the following steps: a ground potential electrician suspends an insulating flexible ladder on a tower ground wire, and an equal potential electrician climbs onto the flexible ladder from the cross arm side of a live wire; a ground cooperation person drags the tail end rope head of the flexible ladder to drive the insulating flexible ladder to slide along a ground wire in order that the equal potential electrician stops at a position opposite to a wire live line work area; the equal potential operator climbs to a position, which is parallel to shoulders, on the live wire along the flexible ladder; after an electric field entrance command is received, the ground cooperation person drags the rope head of the flexible ladder in a direction vertical to the ground wire in order to drive the flexible ladder to swing towards the live wire on the inner side of the ground wire; the equal potential electrician rapidly gets close to the live wire by adopting a potential shifting bar and swings inwards into a strong electric field. By adopting the method, the live line work can be performed at any position of the electric transmission line, and the physical output is low in the whole process; the method is easy to implement.

Description

technical field [0001] The invention belongs to the field of ultra-high voltage power transmission and transformation, and in particular relates to a method for equipotential electrification operation of a ±800 kV straight tower power transmission line entering an electric field. Background technique [0002] When a fault occurs on an ultra-high voltage transmission line, due to the large transmission power of the line, it is often necessary to adopt the method of live fault elimination. The traditional way to enter the electric field is mainly the "cross two short three" method and the hanging basket method, but the ultra-high voltage transmission line has the characteristics of long insulator strings, and the method of "cross two short three" to enter the electric field faces great physical exertion and zero Value insulators cannot detect the problem, so the hanging basket method is usually used to enter the electric field. [0003] The hanging basket method can effective...

AI Technical Summary

Problems solved by technology

[0006] 3) When the hanging basket method enters the electric field, it is necessary to consider whether the combination clearance is satisfied. If the combination clearance of live work cannot be satisfied, the live work task cannot be carried out;

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