Corrosion Aspects of HV DC on Buried Telephone Plant

High-voltage direct-current (HV dc) transmission is proposed by the Bonneville Power Administration (BPA) to transmit power from Oregon to southern California, via a balanced line. Balanced transmission lines pose little or no corrosion problems to buried lead telephone cables. However, because of the use of ground return under fault conditions or scheduled line repairs, the corrosion aspects of continuous ground return operation have been considered.