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Energies 2017, 10(7), 873; https://doi.org/10.3390/en10070873

Small-Signal Stability Analysis of Interaction Modes in VSC MTDC Systems with Voltage Margin Control

Faculty of Electrical Engineering and Computing, University of Zagreb, Unska 3, 10000 Zagreb, Croatia
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Received: 5 May 2017 / Revised: 27 June 2017 / Accepted: 28 June 2017 / Published: 29 June 2017
(This article belongs to the Section Electrical Power and Energy System)
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Abstract

Multi-terminal Direct Current Transmission (MTDC) is an emerging and promising technology for the transmission of electricity and the main initiator of the development of MTDC grids is offshore wind generation. However, prior to their construction, a thorough investigation of different aspects of their implementation and operation is required. In this research, an MTDC grid with voltage margin control consisting of voltage source converters (VSCs) and a high frequency cable model was implemented in Matlab/SIMULINK (R2015b, The MathWorks, Inc., Natick, MA, USA). Small-signal stability analysis was carried out to investigate the sensitivity of the grid’s interaction modes to the operating point, the structure of the grid, and the selection of the voltage controlling converter. Based on the findings of these analyses, a strategy for droop control method is proposed and demonstrated. View Full-Text
Keywords: VSC MTDC grids; voltage margin control; small-signal analysis; interaction modes; sensitivity analysis; voltage droop control VSC MTDC grids; voltage margin control; small-signal analysis; interaction modes; sensitivity analysis; voltage droop control
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Grdenić, G.; Delimar, M. Small-Signal Stability Analysis of Interaction Modes in VSC MTDC Systems with Voltage Margin Control. Energies 2017, 10, 873.

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