Abstract
This article analyzes the transient stability of an offshore wind farm connected via modular multilevel converter (MMC)-based high-voltage direct-current transmission system. The wind farm is composed by full-scale type-4 wind turbines, whereas short-circuit faults occurring in between the MMC and wind farm are considered. The MMC tends to be switched to the current limiting mode or the overmodulation mode during the ac-side fault, which further interacts with the control systems of wind turbines, complicating the transient stability problem of the system. Hence, in this work the parametric impacts of the phase-locked loop of wind turbine converters and over-current/-modulation limiters of the MMC are revealed analytically, and further corroborated by time-domain simulations.
Original language | English |
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Article number | 9203975 |
Journal | IEEE Transactions on Power Systems |
Volume | 36 |
Issue number | 3 |
Pages (from-to) | 2251-2261 |
Number of pages | 11 |
ISSN | 0885-8950 |
DOIs | |
Publication status | Published - May 2021 |
Bibliographical note
Copyright:Copyright 2021 Elsevier B.V., All rights reserved.
Keywords
- Equilibrium points
- Modular multilevel converter
- Short-circuit faults
- Transient stability
- Wind power plant