METHOD FOR STRINGING REPLACEMENT OPTICAL GROUND WIRE OR STATIC WIRE NEAR ENERGIZED POWER LINES

摘要

A method of stringing replacement static lines on an energized overhead power line system, wherein both the old and new static wire is grounded at substantially each support structure within a pull zone during static wire maintenance and replacement operations, the method including at least the steps of (a) removing a length of an old static wire from the pull zone portion of the system; (b) stringing in a length of replacement static wire into the portion of the system; (c) maintaining an electrical connection between earth and the old static wire during step (a); and (d) maintaining an electrical connection between the earth and the replacement static wire during step (b), while at substantially all times maintaining a grounding connection from the old static wires and the new, replacement static wires to substantially each support structure, and therealong to ground, along the pull zone portion of the system.

主权项

1. A method of stringing a replacement static wire so as to replace a length of an existing static wire needing replacement within a pull zone having a plurality of support structures supporting the existing static wire and an overhead energized power line along and above a corresponding segment of the energized overhead power line, wherein the length of existing static wire has opposite first and second ends, the method comprising:
a. providing a pulling wire, and an electrically insulated isolation link, and connecting a first end of the pulling wire to the first end of the length of existing static wire using the isolation link; b. pulling the length of existing static wire from the pull zone by pulling the second end of the length of existing static wire until the isolation link is at the corresponding end of, or out of, the pull zone, and then disconnecting the length of existing static wire from the isolation link; c. providing a length of replacement static wire corresponding in length to the now removed length of existing static wire and joining a first end of the length of replacement static wire to the isolation link; d. pulling on the second end of the pulling wire, opposite the first end of the pulling wire, to thereby replace into the pull zone the length of replacement static wire for the length of existing static wire; e. maintaining an electrically grounded connection at least between earth and the length of existing static wire at least during steps (a) and (b); f. maintaining an electrically grounded connection at least between the earth and the replacement static wire at least during steps (c) and (d); g. maintaining an electrically grounded connection at least between earth and the length of pulling wire at least during steps (a), (b), (c) and (d); h. maintaining the electrically grounded connection in step (e) at substantially each of the support structures supporting the length of existing static wires as the pulling of the length of existing static wires from the pull zone proceeds; and i. maintaining the electrically grounded connection in step (f) at substantially each of the support structures supporting the length of the replacement static wire as the replacing of the length of replacement static wire into the pull zone proceeds.