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Being the first five-terminal Modular Multilevel Converter (MMC)-based HVDC project in the world, the control and protection system must be validated under various operation modes as well as contingency at the factory acceptance test. This paper presents the configuration and performance of a hardware-in-the-loop (HIL) test platform that is based on a multi-rate real-time simulator using commercial-off-the-shelf...
In this paper a recently proposed variation of the Krylov subspace method for model reduction is applied to power systems. The technique allows to easily enforce constraints on the reduced order model. Herein this is used to preserve the slow and poorly damped modes of the systems in the reduced order model. We analyze the role that these modes have in obtaining a good approximation and we show that...
Frequency regulation in wind-powered islanded microgrids (WPIM) is critical for system stability given unpredictable dynamics from variations in wind generation and demand. Traditional methods of frequency regulation in WPIM have used classical secondary load controllers (CSLC) in a centralized approach to buffer wind generation and demand events. This study investigates the feasibility of using a...
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