High Voltage Direct Current (HVDC) connections have been in operation since the 1950s. The vast majority of which are point to point connections and use Line Commutated Converter (LCC) technology. Since the late nineties Voltage Source Converter (VSC) technology has become a feasible choice on HVDC transmission systems . Research is now focused in the development of Multi-terminal (MT)-HVDC system which will facilitate the collection of energy from distant dispersed renewable energy resources and transport this energy to load centres.
"Risk Assessment for Two Multi Terminal VSC-HVDC Control Schemes,"
Student Journal of Energy Research:
1, Article 2.
Available at: http://arrow.dit.ie/sjer/vol1/iss1/2