Residual voltages and currents in power systems

In the problem of inductive coordination of power and communication systems, residual voltages and currents in the power lines are an important element; yet it is apparent that they are not, in general, well understood. Studies have been made, and others are under way by well-equipped organizations, which will add much to the data concerning them. In this paper the general principles which apply are reviewed briefly and applied to typical power circuits and networks, and oscillograms are shown which verify the theory presented.