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The article introduces a hierarchical control structure for Multiterminal High Voltage Direct Current (M-HVDC) systems. The presented hierarchy is similar to the control structure of the classical AC systems divided in primary, secondary and tertiary control. The design and interaction between the secondary, or power control, and the primary controllers, or voltage control, are discussed. Furthermore,...
This paper illustrates how dedicated droop controls may take advantage of an offshore DC grid topology to implement different power flow policies, without any communication or master control. The issue of DC grid extension is also tackled with a special emphasis on wind spillage: a process to synthesize spatially correlated winds is described and used to assess the value for different extensions and...
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