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Model complexity may have a significant impact on transient stability results of mixed AC/DC systems. The dynamics of various mixed AC/DC models with a focus on different generator orders and multi-level modular converter (MMC) VSC-HVDC model types is investigated within this paper. MMC VSC-HVDC converter models are based on average value model (AVM) and simplified AVM, while 2nd, 3rd and 6th order...
Modern power systems are increasingly complex and uncertain with changes in load and generation at all voltage levels. This condition prompts the need for greater monitoring and analysis of power system dynamic security. This is increasingly true as significant new transmission assets such as HVDC lines are introduced into networks. This paper presents a thorough investigation of the impact of HVDC...
A new controller for power system equipped with Unified Power Flow Controller (UPFC) is proposed in the form of coordination between lead lag power system stabilizer (PSS) and modal optimal power oscillation damping (MO POD). MO is a combination of linear quadratic regulator and modal placement that is tuned with multi-objective time varying accelerating constant particle swarm optimization (TVAC...
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