Title :
Corona caused deterioration of ADSS fiber-optic cables on high voltage lines
Author :
Karady, George G. ; Besztercey, Gynla ; Tuominen, M.W.
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA
fDate :
10/1/1999 12:00:00 AM
Abstract :
Deterioration of an ADSS (all dielectric self-supporting) fiber optic cable jacket material has been reported near the tips of armor rod assemblies installed on high voltage transmission lines. Field observations and laboratory tests revealed that corona can exist on the tips of the armor rod. Electric field analyses reported herein reveal that the tip surface gradients are high enough to produce corona. Field conditions have been duplicated in a high voltage test chamber and jacket damage has been observed near generated corona. The deterioration mechanism is identified and jacket life expectancy is estimated. Different mitigation techniques are suggested
Keywords :
cable insulation; cable sheathing; cable testing; corona; insulation testing; optical cables; power transmission lines; HV power transmission lines; all-dielectric self-supporting fiber optic cable; armor rod assembly tips; corona; deterioration mechanism; electric field analyses; field observations; high voltage test chamber; jacket damage; jacket life expectancy; jacket material deterioration; laboratory tests; mitigation techniques; tip surface gradients; Assembly; Corona; Dielectric materials; Laboratories; Optical fiber cables; Optical fiber testing; Optical fibers; Optical materials; Transmission lines; Voltage;
Journal_Title :
Power Delivery, IEEE Transactions on
