Testing World’s Longest Subsea 150 kV AC Cable Interconnection
The world’s longest triplex undersea bidirectional AC cable interconnection has been operating since 2020, connecting the 150 kV power systems of northeast Crete and southwest Peloponnese in Greece. This is a 2X200 MVA 135 km system, with underground cable interconnections at both ends that add another 42 km of length. The undersea cables are laid at a record depth of 980 m. This presentation reviews all the different testing requirements as well as findings related to this cable interconnection and also describes continuing work in this regard.