16-06-2012, 11:28 AM
MTDC Transmission System
A multiterminal Direct Current transmission system (MTDC) is economically competitive and technically feasible. Existing MTDC schemes with up to four terminals are described, and parameters important for their energy availability are presented. Based on experience one can expect that a MTDC also with a higher number of terminals provides access to remote power sources with the same energy availability as a point-to-point HVDC connection. Most existing DC schemes have been realised as point-to-point connections. They are accepted as a means to provide access to remote power sources with the same energy availability as from local power plants. Their main disadvantage is their limitation to power exchange between only two partners. Contrary to it a MTDC allows to connect all interested partners within the reach of the transmission routing. Because of the lack of experience with multiterminal DC schemes one might be concerned about its somewhat more complex control in comparison with point-to-point schemes. Some people even fear that the energy availability could suffer from it. Therefore it is the objective of this paper to provide inside into the main factors affecting the energy availability of a MTDC and to estimate the performance of energy availability based on experience with existing HVDC schemes.
A multiterminal Direct Current transmission system (MTDC) is economically competitive and technically feasible. Existing MTDC schemes with up to four terminals are described, and parameters important for their energy availability are presented. Based on experience one can expect that a MTDC also with a higher number of terminals provides access to remote power sources with the same energy availability as a point-to-point HVDC connection. Most existing DC schemes have been realised as point-to-point connections. They are accepted as a means to provide access to remote power sources with the same energy availability as from local power plants. Their main disadvantage is their limitation to power exchange between only two partners. Contrary to it a MTDC allows to connect all interested partners within the reach of the transmission routing. Because of the lack of experience with multiterminal DC schemes one might be concerned about its somewhat more complex control in comparison with point-to-point schemes. Some people even fear that the energy availability could suffer from it. Therefore it is the objective of this paper to provide inside into the main factors affecting the energy availability of a MTDC and to estimate the performance of energy availability based on experience with existing HVDC schemes.