All-optical differential current detection technique for unit protection applications [PDF]
, 2013 In this paper we demonstrate a novel, all-optical differential current protection scheme. By monitoring the optical power reflected from two matched hybrid fiber Bragg grating current sensors and using a simple optoelectronic threshold detector, an ...
Fusiek, Grzegorz +3 more
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Analysis and hardware testing of cell capacitor discharge currents during DC faults in half-bridge modular multilevel converters [PDF]
, 2015 This paper focuses on the behaviour of the cell capacitor discharge currents during DC faults in half-bridge modular multilevel converters. Active switches, not designed for fault conditions, are tripped to minimize discharge currents effect on the ...
Aboushady, A.A., Ahmed, K.H., Jovcic, D.
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Energies, 2023 Inter-turn short circuit in the excitation windings of synchronous condensers is a common fault that directly impacts their normal operation. However, current fault analysis and diagnosis of synchronous condensers primarily rely on voltage-balanced ...
Junqing Li +5 more
doaj +1 more source
Distance Protection for Microgrids in Distribution System [PDF]
, 2015 Owing to the increasing penetration of distributed generation, there are some challenges for the conventional protection in distribution system. Bidirectional power flow and variable fault current because of the various operation modes may lead to the ...
Guerrero, Josep M. +3 more
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Modeling the limiting performance of resistive superconductor fault current limiters for 2G HTS tape
Firat University Journal of Experimental and Computational Engineering, 2022 Fault currents in power systems force valuable power system elements thermally, electro-dynamically and electromagnetically. Due to the increase in fault current levels, the installation of components resistant to fault currents and the damage of these ...
Muhsin Tunay Gençoğlu, Buğra Yılmaz
doaj
IEEE Access, 2020 The pole-to-ground fault is one of the most typical faults in modular multilevel converters (MMCs) based DC grid. Analyzing the transient characteristics of fault voltages and currents is of great significance for fault identification, configuration of ...
Jingqiu Yu +3 more
doaj +1 more source
New principle of busbar protection based on a fundamental frequency polarity comparison.
PLoS ONE, 2019 To overcome the contradiction between speed and reliability in existing busbar protection schemes, a new busbar protection algorithm based on a polarity comparison of fundamental frequency currents is proposed.
Hao Wu, Xingxing Dong, Qiaomei Wang
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Matrix converter open circuit fault behavior analysis and diagnosis with a model predictive control strategy [PDF]
, 2018 A novel fast and reliable open circuit fault diagnosis strategy for a Matrix Converter with a Finite Control Set Model Predictive Control strategy is proposed in this paper.
Dan, Hanbing +4 more
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Bidirectional solid current-limiter for HVDC grids
The Journal of Engineering, 2019 High-voltage direct current (HVDC) grids have been assumed as a promising technology for its advantages in accommodation and integration of large-scale renewable energy.
Jiantao Li +4 more
doaj +1 more source
Modular multilevel converter with modified half-bridge submodule and arm filter for dc transmission systems with DC fault blocking capability [PDF]
, 2018 Although a modular multilevel converter (MMC) is universally accepted as a suitable converter topology for the high voltage dc transmission systems, its dc fault ride performance requires substantial improvement in order to be used in critical ...
Abdelsalam, Ibrahim A. +3 more
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