Browsing by Author "Eguia-Lopez, P."
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Item Assessment of distribution grid losses depending on storage location for residential PV systems in three grids in the region of Murcia(CIGRE, 2020) Rubio-Miguel, D.; Merino, Julia; Eguia-Lopez, P.; Torres-Iglesias, E.This paper shows the results of the studies carried out to determine which system, batteries installed behind the meter (BTM) or batteries installed in front of the meter (FTM), shows the best performance in terms of minimal power losses and energy storage capacity that would have the Battery Energy Storage Systems (BESS) to be installed. The analysis has been carried out over real networks in the region of Murcia (Spain) with different topologies and a variable number and location of customers along the grid. In addition, real consumption profiles of random customers, as well as real measurements of the transformer loading curves recorded at the Secondary Substation (SS), have been considered in the analysis. In this way, it can be ensured that the results represent real situations that can be found nowadays.Item Fault detection based on ROCOV in a multi-terminal HVDC grid(European Association for the Development of Renewable Energy, Environment and Power Quality (EA4EPQ), 2020) Perez-Molina, M.J.; Eguia-Lopez, P.; Larruskain-Eskobal, M.; Etxegarai-Madina, A.; Apiñaniz Apiñaniz, S.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.