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The Western HVDC Link

Alan Capon
I did originally answer the previous thread, but have since deleted my response and I believe a new thread with a proper and correct title is the correct way of answering. 


More info on the fault here: https://www.energy-reporters.com/transmission/italys-prysmian-under-fire-over-uk-interconnector-failure/ 


Reports suggest an undersea cable fault in the vicinity of Liverpool Bay. 


Regards,


Alan.
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    Alan Capon:

    We have a 106km long ac power cable that operates at 90kV. Once energised, it produces about 40MVAr of reactive power. I believe it is still the longest undersea ac power cable constructed. We had a number of technical reasons for wanting ac, otherwise a cable of that length would normally be dc.




    I have an historical interest in your cable: in 1998 I ran the system studies to optimise the design for BICC who became the contractor.  We established 90kV as the optimal voltage when the expectation (and the rival design from Pirelli) was 132kV.  I hope it's still the longest ac subsea interconnector in the world, because that's what it says on my CV ?

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    Alan Capon:

    We have a 106km long ac power cable that operates at 90kV. Once energised, it produces about 40MVAr of reactive power. I believe it is still the longest undersea ac power cable constructed. We had a number of technical reasons for wanting ac, otherwise a cable of that length would normally be dc.




    I have an historical interest in your cable: in 1998 I ran the system studies to optimise the design for BICC who became the contractor.  We established 90kV as the optimal voltage when the expectation (and the rival design from Pirelli) was 132kV.  I hope it's still the longest ac subsea interconnector in the world, because that's what it says on my CV ?

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