Method for replacing single-circuit wire of common-tower double-circuit lines

Abstract

The invention relates to methods for maintaining double-circuit lines, in particular to a method for replacing a single-circuit wire of common-tower double-circuit lines. A tension field and a traction field are arranged according to landforms, error climbing prevention safety measures are arranged on a tower, and corresponding safety measures are distributed in the traction field. The end portion of a new wire is connected with the end portion of an old wire through a snakeskin sleeve, and wing clamps are used in old wire strain section connection. The mode that the old wire and the new wire are in transition is adopted in the wire replacement process, that is, the wire is dragged through a tractor, tension stringing is adopted in the whole process, the traction field is used as a wire hanging end, the tension field is used as a wire tightening end for reversely dragging and tightening a conductor sag and hanging the wire, and iron tower accessories and corresponding hardware fittings are mounted after the wire is hung. The problem that the double-circuit lines need to be in the power failure simultaneously in the previous work of replacing the common-tower double-circuit wire is solved, and power supply reliability is greatly improved. An error climbing prevention isolating device is arranged on the common-tower double-circuit iron tower, and the method can be applied to the operation of replacing the wire and can be popularized to other common-tower double-circuit work.

Description

technical field

[0001] The invention relates to a method for overhauling a double-circuit line, in particular to a method for single-way replacement of conductors for a double-circuit line on the same tower. Background technique

[0002] The current transmission lines use a large number of double-circuit or even multiple-circuit lines on the same tower, especially in the power grid around the city due to the tight land use and narrow line channels, often only two lines with double-circuit on the same tower are used as backup for each other, while the previous double-circuit on the same tower In the process of replacing the wires, the construction must be powered off simultaneously in both circuits, resulting in the loss of power in the entire substation and seriously affecting the reliability of power supply. Contents of the invention

[0003] The purpose of the present invention is to provide a method for single-way replacement of the double-circuit line on the same tower...

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