TGEG’19, Technologies for Global Energy Grid A need t to push for orward t the d development of c compatible joi oints b between d different cable ma manuf ufactur urers
An obs bser ervation: n: t the d demand nd for offs ffshore p power l links ks i is booming ng (data f for E Europe pe) EVOLUTION OF INSTALLED OFFSHORE CONNECTIONS Before 2009 2009-2018 4000 3305 3000 2145 1865 2000 1000 88 This demand i is associated w with: 0 Length of installed HVAC offshore Length of installed HVDC offshore Installation of more offshore generation connections connections Capability of submarine links to EVOLUTION OF AVERAGE LENGTH OF withstand higher transit and higher voltages INSTALLED OFFSHORE CONNECTIONS Increase of the average length of each link Before 2009 2009-2018 because generation is distant from the 250 shore (AC and DC) 197 179 200 140 150 75 100 49 50 18 0 Average length of installed Average length of installed Average length of installed HVAC offshore connections HVDC MIND offshore HVDC synthetic offshore connections connections Workshop AGP’21, Thursday 27th of June, 2019
Be p e prepared t to face ce th the ch challe llenges r rela elated t to o th this g growin ing need ed Challenge N°1 Reduce the long periods of unavailability of the electrical link : repair capability Challenge N°2 Overcome the limitation of production capacity of each manufacturer : need for longer links Outcome To reduce : the loss of generated energy the associated financial losses the associated claims To ease: the development of long interconnectors in AC and in DC Solution To develop “Compatible Joints” connecting different cable designs regardless of the cable manufacturers, for repairing and building Workshop AGP’21, Thursday 27th of June, 2019
Majors k keys f for or th the d e develo lopment of of com ompatib ible le j joi oints f for or th the of e offshore cable les Pre-study & Development Cable design - Operation • Quali lific icatio ion o of CJ • Confidentiality • Ne Need f for r Cigré recommendations • Reduction of • Intel ellec ectual al and IEC EC s standard repair stock proper erty i y issues es • Compatibility of Maintenance • Reduction of • Need for the systems investigation tests repair time • Qualification tests • Contractual issues • Standardization of tests materials • Risk on project • Responsib ibilit ility Schedule af after er w warran anty y • Design of the period od joints • Responsibility Workshop AGP’21, Thursday 27th of June, 2019
Acti ctions t to o be c e con onsid idered f for or th the d develo lopment of of com ompatib ible le joi oints f for or th the of e offshore c cable les Discussion between TSO to share experience, identify opportunities to ease the development of compatible joints (ENTSO-E) For the new projects, TSO should ask for the development and qualification tests on compatible joints early in the Tender. Fill the lack of Cigré recommendations on extruded compatible joints qualification (compatibility, design…). Workshop AGP’21, Thursday 27th of June, 2019
Concl clusion on Compatible joints exist for HVAC underground cables (One compatible joint has already been developed for HVAC offshore link) Developing and qualifying compatible joints for AC and DC offshore links ? YES we can ! Outcome of such development Capability for manufacturers to address very long link tenders Lower downtime periods and loss of green generation Lower stock of spare parts Workshop AGP’21, Thursday 27th of June, 2019
Thank you for your attention Questions - Discussion Workshop AGP’21, Thursday 27th of June, 2019
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