Abstract
In 1999, the bulk transmission lines from Tuas power station to Ayer Rajah and Labrador substations were commissioned in Singapore. Polypropylene laminated paper (PPLP), a new insulating material with high dielectric strength and low loss was employed to this important outgoing lines from the newly-installed most modern power station. PPLP has been developed since 1970 by Sumitomo Electric and applied to various AC 154-500 kV and DC 500 kV transmission and/or submarine cables. Furthermore, the development of AC 800 kV PPCP cables has been already completed. Not only oil-filled cable, PPLP has been also proved to be very prospective solution to solid DC submarine cables. This paper covers the present state of the application of PPLP to EHV and UHV power cables as well as the prospect of application of PPLP to solid DC submarine cables.
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