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Maxwel da S. Santos
Postgraduate Program in Electrical and of Computer Engineering, Federal University of Rio Grande do Norte, Natal-RN
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Flavio B. Costa
Electrical and Computer Engineering Department, Michigan Technological University, Michigan
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Luciano S. Barros
Computer Systems Department, Federal University of Paraíba, João Pessoa-PB
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Luana C. S. Soares
Postgraduate Program in Electrical Engineering, Federal University of Paraíba, João Pessoa-PB
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Camila M. V. Barros
Computer Systems Department, Federal University of Paraíba, João Pessoa-PB
Keywords:
Modular multilevel converter, multi-terminal high voltage direct current systems, power system stability, synchronous generation, voltage margin control
Abstract
In modern power systems, transmission over long distances and offshore wind energy conversion systems increasingly use the technology of high voltage direct current transmission due to cheaper investment costs, lower power losses, and better controllability. However, effective integration of this technology drastically reduces the overall system’s inertia. This paper proposes a stability analysis of a meshed multi-terminal high voltage direct current (MTDC) system based on modular multilevel converter (MMC) with voltage margin control to connect four distinct AC grids. Simulations assessed the system performance to remain stable under abnormal operating conditions in the AC grids, such as load variations. Results suggest although a disturbance in an AC grid does not cause variations in other AC grids due to the MTDC link, it can generate variations in the DC grid.
