Field stringing test near a live conductor at the Hokkaido-Honshu HVdc link line

A +/-500kV HVdc transmission line is currently being constructed jointly by some electric power companies in Japan. Following construction of this ove rhead transmission Line, the ability to work near a live line in a safe man ner is one of the most important factors for system reliability. We conduct ed a survey of work near a live line using the +/-250kV Hokkaido-Honshu HVd c Link Line in July 1990 before this overhead transmission line was upgrade d. As a result, we clarified various problems in the work conducted near a Live line and suggested some countermeasures such as the grounding of strin ging conductors at more than one point.