Abstract:

This paper introduced a new construction technology of breach engineering for 500 kV four-bundle conductor from the aspects of process structure and flow, operation points, etc, in which the isolated span used fabricated stringing in the new breach transmission line and the fabricated stringing was made on the upper air in the original transmission line. The practical engineering application show that this technology has the characteristics of less work on the upper air, high construction efficiency, short outage time, high technical quality, and is the optimal construction scheme for the breach engineering in the high voltage transmission line as well, compared with the conventional technology of breach engineering.

Key words: transmission line, stringing construction, breach engineering, isolated span, fabricated stringing, marking on upper air, line length calculation