Fault detection based on ROCOV in a multi-terminal HVDC grid

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URI: http://hdl.handle.net/11556/1004
ESSN: 2172-038X
DOI: 10.24084/repqj18.260
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2020
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European Association for the Development of Renewable Energy, Environment and Power Quality (EA4EPQ)
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Abstract
Protection of a meshed VSC-HVDC grid is a challenge due to the behaviour of DC current and voltage signals during fault conditions. Protection systems must operate in a very short time range. Since fault detection should be very fast, local measurement based algorithms are mostly used; communication based algorithms lack the needed speed as a result of the communication time delay. This way, a ROCOV algorithm is proposed in this paper. This algorithm is analysed for different fault conditions.
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HVDC grid , ROCOV , Fault detection , Protection system , VSC
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journal article
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Perez-Molina, M.J., P. Eguia-Lopez, M. Larruskain-Eskobal, A. Etxegarai-Madina, and S. ApiƱaniz ApiƱaniz. ā€œFault Detection Based on ROCOV in a Multi-Terminal HVDC Grid.ā€ Renewable Energy and Power Quality Journal 18 (June 2020): 167ā€“171. doi:10.24084/repqj18.260.