Separating conductor for ultra-high voltage cable

Abstract

Provided is a separating conductor for an ultra-high voltage cable. The separating conductor for the ultra-high voltage cable comprises a plurality of separating strand blocks and a single circular guide line, a plurality of strands of circular single lines are twisted to be the separating strand blocks, the single circular guide line is arranged at the center interval after the separating strand blocks are combined, the single circular guide line is coated with insulation and water resistance paste, every two adjacent separating strand blocks are separated through insulation and water resistance tape, and the position between every two adjacent circular single lines in each separating strand block is also coated with insulation and water resistance paste. The separating conductor is mainly used for the ultra-high voltage cable, the separating effect is remarkable, the structure is stable, the excellent longitudinal water resistance performance is achieved, the alternating current resistance of the separating conductor is smaller than that of an ordinary separating conductor, the manufacturing process is simple, and production cost is low.

Description

technical field [0001] The invention relates to a conductor, in particular to an ultra-high voltage cable split conductor. Background technique [0002] Due to the influence of "skin effect" and "proximity effect" when the cable conductor transmits AC current, its AC resistance is greater than the DC resistance, resulting in increased power loss and heat generation, and reduced power transmission efficiency. This effect increases with the increase of the conductor cross-section. And more and more obvious. [0003] Due to the high voltage level and the strong inner surface field of the insulation, extra-high voltage cables can only use large cross-section conductors. In order to reduce its "skin effect", most of the industry uses crepe paper to divide the conductor into several mutually isolated conductors. The method of conductor surface area reduces the influence of "skin effect" on AC resistance. Due to the limitation of stranding equipment and process, most of the common...

Images