Discussion of "Adaptive noncommunication protection of double circuit line systems"

The discusser congratulates the authors of the original paper ("Adaptive noncommunication protection of double circuit line systems", see ibid., vol.17, p.43-49, 2003) for their interesting contribution to the increasing literature on power system transmission line protection. Their paper was a sequel to earlier papers by the first author investigating various noncommunication based protective schemes for transmission line protection. The discusser then requests the original authors comments on a number of relevant points.