Construction features and environmental factors influencing corrosion on a self-contained fluid-filled submarine cable circuit in Long Island Sound

Author

Bascom, E.C., III. ; Iossel, Y. ; Poliakov, A.V. ; Troisi, J.F. ; Schwabe, R.J.

Author_Institution

Power Technol. Inc., Schenectady, NY, USA

Volume

13

Issue

3

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

677

Lastpage

682

Abstract

A 345 kV self-contained fluid-filled cable circuit was installed in an environment where corrosion of the armor may occur. To better understand the conditions that may result in corrosion, stray currents in the cable end zones and in the middle (submarine) of the circuit were measured, and cable samples were analyzed to determine the electrochemical activity of the cable´s outer layers. The results of the project revealed that electrolytic corrosion would affect the semiconductive polyethylene if sufficient stray current density (greater than 0.15 A/m²) was induced by stray currents which were present in Long Island Sound where the cables are installed. Measurements revealed stray current densities in excess of this level towards one end of the cable route. Various other considerations for corrosion are also discussed

Keywords

cable sheathing; corrosion; current density; electric current measurement; electrochemistry; insulating oils; power cables; submarine cables; 345 kV; Long Island Sound; cable armor corrosion; construction features; corrosion; electrochemical activity; electrolytic corrosion; environmental factors; self-contained fluid-filled submarine cable; semiconductive polyethylene; stray current density; stray currents measurement; Cable shielding; Cables; Circuits; Conducting materials; Conductors; Copper; Corrosion; Environmental factors; Galvanizing; Wires;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.686959

Filename

686959