Monitoring of 420 kV XLPE cable system in underground tunnel

Author

Gieselbrecht, D. ; Koltunowicz, Wojciech ; Obralic, A. ; Ritz, Thomas ; Christensen, P. ; Schneider, B. ; Cohnen, K.H.

Author_Institution

OMICRON Energy Solutions, Berlin, Germany

fYear

2012

fDate

23-27 Sept. 2012

Firstpage

917

Lastpage

920

Abstract

This paper deals with continuous monitoring of components of a 400 kV XLPE cable system placed in an underground tunnel in South London. An advance concept to assess and monitor the condition of the insulation of cable system is described. Partial discharges are continuously monitored at all joints and terminations and at the same time the system performs measurement of oil pressure in 400 kV terminations as well as the condition of all sheath voltage limiters located in the joint bays. Special attention is given to the procedure of on-site acceptance of monitoring system and to the system maintenance strategy.

Keywords

XLPE insulation; partial discharges; power cable insulation; pressure measurement; tunnels; underground cables; South London; XLPE cable system; cable system insulation; continuous monitoring; joint bays; oil pressure measurement; partial discharges; sheath voltage limiters; system maintenance; underground tunnel; voltage 400 kV; voltage 420 kV; Joints; Maintenance engineering; Monitoring; Optical fiber cables; Partial discharges; Power cables; Sensors; HV/EHV XLPE cables; monitoring; partial discharge;

fLanguage

English

Publisher

ieee

Conference_Titel

Condition Monitoring and Diagnosis (CMD), 2012 International Conference on

Conference_Location

Bali

Print_ISBN

978-1-4673-1019-2

Type

conf

DOI

10.1109/CMD.2012.6416302

Filename

6416302