Why use DC power (rather than AC)?
• emits about 5% of the electromagnetic radiation of AC which is good for elasmobranchs (sharks etc) • is economically viable for large MW power transfer over long distances to market • immune to types of faults associated with high voltage AC generation and transmission • allows power transfer oscillation between nil MW to 200 MW to nil MW over 6 hours • Gives capacitive re-charging of 100 km whereas HVAC cables would pose a significant limitation • matches voltage and current performance to periodic oscillatory nature of tides • not reliant on grid for synchronisation or reactive power-energy compensation • has a history to the 1870’s for reliable operational service • Requires two submarine cables versus three larger cables for HVAC equivalent power ratings
