Application of a novel approach of resistive‐type superconducting fault current limiter with a fast protection system in multi‐terminal direct current network

Amor, Yacine Ayachi; Didier, Gaëtan; Hamoudi, Farid; Lubin, Thierry

doi:10.1002/2050-7038.12568

Cited by 5 publications

(1 citation statement)

References 31 publications

(36 reference statements)

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“…In MT-HVDC transmission structures, VSCs are integral in integrating wind farms with existing AC grids [3]. VSC-based MT-HVDC grids have advantages over AC technology, such as connecting remote offshore renewable energy resources, independently controlling active and reactive power, reducing space, and supplying passive or weak networks [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Multisegmented Intelligent Solution for MT-HVDC Grid Protection

et al. 2023

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Fault detection continues to be a relevant and ongoing topic in multiterminal High Voltage Direct Current (MT-HVDC) grid protection. In MT-HVDC grids, however, high DC-fault currents result from a failure of a complex protective threshold in traditional protection schemes, making Voltage Source Converter (VSC) vulnerable to such potent transient currents. In this innovative single-ended DC protection scheme, multiple time window segments are used to consider the effects of the transient period across limiting inductors at each end of the link. Multiple segments of 0–0.8, 0.8–1.5, and 1.5–3.0 ms reduce relay failure and improve the sensitivity to high fault impedance while requiring minimal computational effort. It employs feature extraction tools such as Stationary Wavelet Transform and Random Search (RS)-based Artificial Neural Networks (ANNs) for detecting transmission line faults within DC networks. Its goal is to improve the accuracy and reliability of protective relays as a result of various fault events. Simulations showed that the proposed algorithms could effectively identify any input data segment and detect DC transmission faults up to 500 ohms. Accuracy for the first segment is 100% for fault impedance up to 200 ohms, whereas the second and third segments show 100% accuracy for high impedance faults up to 400 ohms. In addition, they maintain 100% stability even under external disturbances.

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