Fault identification in HVDC grids using a transient parametric model - Pôle Télécoms et Réseaux
Communication Dans Un Congrès Année : 2020

Fault identification in HVDC grids using a transient parametric model

Paul Verrax
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Michel Kieffer
Bertrand Raison

Résumé

This paper presents a novel single-ended fault identification algorithm for meshed High Voltage Direct Current grids. This algorithm can be used in the context of fully-selective fault-clearing strategies. Once a fault is suspected, using a parametric model describing the voltage and current evolution just after the fault occurrence, a maximum-likelihood estimate of the fault distance and impedance is evaluated. The presence of the fault is then confirmed depending on the size of the confidence region of the obtained estimate. The approach is evaluated on a simulated three-node meshed grid. The current and voltage need to be observed during less than 0.2 ms to get an accurate estimate of the fault characteristics and to identify consistently the faulty line.
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Dates et versions

hal-04490220 , version 1 (16-09-2024)

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Paul Verrax, Alberto Bertinato, Michel Kieffer, Bertrand Raison. Fault identification in HVDC grids using a transient parametric model. 21st IFAC World Congress, Jul 2020, Berlin, Germany. pp.13700-13706, ⟨10.1016/j.ifacol.2020.12.873⟩. ⟨hal-04490220⟩
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