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Bertrand Raison
Centre national de la recherche scientifique
EngineeringControl engineeringGridElectronic engineeringPhotovoltaic system
95Publications
19H-index
1,664Citations
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Publications 98
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#1P. Verrax (CentraleSupélec)
Last. Bertrand Raison (CNRS: Centre national de la recherche scientifique)H-Index: 19
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Abstract This paper addresses the problem of fault identification in meshed HVDC grids once an abnormal behavior has been detected. A parametric single-ended fault identification algorithm is proposed. The method is able to determine whether the line monitored by a relay is faulty or not using a very short observation window. When a fault is suspected, the proposed algorithm estimates the fault distance and impedance using a parametric model describing the voltage and current evolution just afte...
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#1Nikolaos Sapountzoglou (CNRS: Centre national de la recherche scientifique)
#2Jesus Lago (TU Delft: Delft University of Technology)H-Index: 4
Last. Bertrand Raison (CNRS: Centre national de la recherche scientifique)H-Index: 19
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Abstract In this paper, a gradient boosting tree model is proposed to detect, identify and localize single-phase-to-ground and three-phase faults in low voltage (LV) smart distribution grids. The proposed method is based on gradient boosting trees and considers branch-independent input features to be generalizable and applicable to different grid topologies. Particularly, as it is shown, the method can be estimated in a specific grid topology and be employed in a different one. To test the algor...
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#1Nikolaos Sapountzoglou (CNRS: Centre national de la recherche scientifique)
#2Bertrand Raison (CNRS: Centre national de la recherche scientifique)H-Index: 19
Last. Nuno SilvaH-Index: 2
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A fault localization method for single-phase to ground short-circuit (SC) faults in low voltage (LV) smart distribution grids is presented in this paper. Both the use of rms voltage phase measurements and an analysis of symmetrical components of the voltage were investigated and compared in this study. Phase measurements were found to be more suitable for single-phase to ground faults. The described method is a three-step process beginning with the identification of the faulty branch, followed b...
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#1Nikolaos Sapountzoglou (CNRS: Centre national de la recherche scientifique)
#2Bertrand Raison (CNRS: Centre national de la recherche scientifique)H-Index: 19
Last. Nuno SilvaH-Index: 2
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In this paper, fault detection and localization methods for a Low Voltage (LV) smart distribution grid are presented. Two fault detection approaches were examined based on current measurements at the beginning of the feeder and on the highest voltage drop across the feeder branches. The localization method was based solely on nodal rms voltage measurements. Five influencing factors were considered: location of the fault, time of the day, fault resistance value (ranging from 0.1 \Omega to $1 k...
1 CitationsSource
#1Alberto BertinatoH-Index: 2
Last. Bertrand Raison (CNRS: Centre national de la recherche scientifique)H-Index: 19
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Symmetrical monopolar is nowadays one of the most common architecture employed in HVDC point-to-point interconnectors using Modular Multilevel Converter (MMC) technology. Future HVDC grids built in a stepwise approach, starting from the connection of the existing and future symmetric monopolar HVDC links, are therefore a possibility that can be taken into account. In such symmetrical monopolar configuration, a pole-to-ground fault in a DC link results in a low steady state DC fault current but i...
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#1Nikolaos Sapountzoglou (CNRS: Centre national de la recherche scientifique)
#2Bertrand Raison (CNRS: Centre national de la recherche scientifique)H-Index: 19
In this paper, a fault diagnosis method for grid-connected photovoltaic (GCPV) systems is presented. The method is based on the monitoring of the ac electrical variables and especially on the measurements of the currents and voltages at the output of the inverter. After a short introduction on the topic, the necessary steps to build a GCPV system model are described; the photovoltaic (PV) array is connected to the grid through a boost converter and an inverter. Four categories of faults were stu...
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#2Alberto BertinatoH-Index: 2
Last. M. Petit
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1 CitationsSource
#2Alberto BertinatoH-Index: 2
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#1Bertrand Raison (UGA: University of Grenoble)H-Index: 19
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