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A submarine power cable is a transmission cable for carrying electric power below the surface of the water. [1] These are called "submarine" because they usually carry electric power beneath salt water (arms of the ocean, seas, straits, etc.) but it is also possible to use submarine power cables beneath fresh water (large lakes and rivers).
The first stage of this project went in service in the year 2000 with a bipolar voltage of 250 kilovolts (kV) and rated to carry 1400 megawatts (MW). A second-stage upgrade to 500kV has been planned from the outset and the HV cable, DC switchgear and DC reactor are already rated for the higher voltage, but as of 2012 the upgrade has not been put into effect.
The Cross-Sound Cable can transmit a maximum power of 330 MW at a voltage of +/- 150 kV DC. The maximum current for Cross-Sound Cable is 1175 amperes.The Cross-Sound Cable is not simply a pair of underwater HVDC cables; rather it is a bundle of cables that includes the HVDC transmission lines and fiber-optic cables for phone and Internet data transfer.
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Electric power transmission through interconnectors using high-voltage direct-current (HVDC) involves usually two converter stations and a transmission line. Generally overhead lines are used, but an important class of HVDC projects use submarine power cables. A back-to-back station has no transmission line and joins two separate AC grids at a ...
The submarine cable was laid in September 2006. [12] [13] [14] The Estlink cable was inaugurated on 4 December 2006 and it became fully operational on 5 January 2007. [15] [16] The Estlink 1 cable was operated by AS Nordic Energy Link company, founded by Baltic and Finnish power companies.
The International Cable Protection Committee — at ISCPC.org, includes a register of submarine cables worldwide (though not always updated as often as one might hope) United Kingdom Cable Protection Committee — at UKCPC.org.uk; Kingfisher Information Service — at KISCA.org.uk, source of free maps of cable routes around the United Kingdom ...
Red Sea Cable is the designation of a 13.6 km long 400 kV AC submarine power cable under the Red Sea that interconnects the power grids of Egypt and Jordan. The project was commissioned in 1994 and inaugurated in 1998. [1] [2] The cable has a maximum transmission capacity of 2,000 MW and reaches a maximum depth of 850 metres.