Title:
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Unified reference controller for flexible primary control and inertia sharing in multi-terminal voltage source converter-HVDC grids
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Author:
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Rouzbehi, Kumars; Zhang, Weiyi; Candela García, José Ignacio; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Elèctrica; Universitat Politècnica de Catalunya. SEER - Sistemes Elèctrics d'Energia Renovable |
Abstract:
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Multi-terminal dc (MTDC) grids are expected to be built and experience rapid expansion in the near future as they have emerged as a competitive solution for transmitting offshore wind generation and overlaying their ac counterpart. The concept of inertia sharing for the control and operation of MTDC grids, which can be achieved by the proposed unified reference controller. The control objectives of the MTDC grids voltage source converter (VSC) stations are no longer limited to the stabilisation of MTDC grid, instead, the requirements of ac side are also met. The interaction dynamics between the ac and dc grid is analysed to illustrate the proposed concept. In addition, the voltage source converter stations can work in different operation modes based on the proposed unified control structure, and can switch among the operation modes smoothly following the secondary control commands. Simulation results exhibit the merits and satisfactory performance of the proposed control strategy for stable MTDC grid operation. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Energies::Energia elèctrica::Automatització i control de l'energia elèctrica -Àrees temàtiques de la UPC::Enginyeria electrònica::Electrònica de potència::Convertidors de corrent elèctric -Electric power distribution--Direct current -Electric current converters -Offshore wind power plants -power transmission control -wind power plants -HVDC power transmission -power converters -Energía elèctrica -- Distribució -- Corrent continu -Convertidors de corrent elèctric -Parcs eòlics marins |
Rights:
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Document type:
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Article - Submitted version Article |
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