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22.08.2014 17:17
© ABB
ABB has launched what it says is the world´s most powerful underground and subsea power transmission cable system, powerengineeringint.com reported.
The 525 kilovolt (kV) extruded high-voltage direct current (HVDC) cable system sets a world record for extruded HVDC cable technology, doubling power flow and extending range to enable greater integration of distant renewables and interconnections.
The innovation will more than double the power capacity to about 2,600 MW from 1,000 MW. It will also expand the cable's reach to distances of 1,500 kilometres, up from less than 1,000 kilometres, while keeping transmission losses under 5 percent.
The new cable offers a 64 percent increase over 320 kV, currently the highest voltage deployed for this type of technology. The 525kV cable system can be deployed in subsea and underground applications, making it ideal for efficient power delivery through densely populated or environmentally sensitive areas or coastal and open-sea applications.
“This major technology breakthrough will change the feasibility of renewable energy projects and play a defining role in using underground and subsea high voltage cables to integrate renewables over long distances,” said Ulrich Spiesshofer,(right) CEO of ABB.
The solution is expected to enable countries to use their electricity transmission systems to integrate more renewable energy being generated by distant solar and wind installations. A single pair of 525 kV extruded HVDC cables could for example transmit enough power from giant offshore wind farms in to supply two million households.
ABB say the technology offers savings in capital and operational expenses and also supports the development of DC grids where ABB removed a key technology hurdle with the development of the hybrid HVDC breaker.
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