Results 11 to 20 of about 127,637 (306)
A Pilot Protection Scheme of DC Lines for MMC-HVDC Grid Using Random Matrix
Journal of Modern Power Systems and Clean Energy, 2023 The over-current capacity of half-bridge modular multi-level converter (MMC) is quite weak, which requests protections to detect faults accurately and reliably in several milliseconds after DC faults.
Senlin Yu, Xiaoru Wang, Chao Pang
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New pilot protection method based on the current fault component waveform similarity
IET Generation, Transmission & Distribution, 2023 In order to improve the ability of the modular multi‐level converter to quickly clear and isolate faults in the multi‐terminal flexible DC grid, this paper analyzes the characteristics of current faults in the multi‐terminal flexible direct current grid,
Shuping Gao +3 more
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Pilot protection of flexible DC line based on Jaccard similarity integration criterion
电力工程技术, 2023 The flexible DC line protection based on the double-ended method with large communication and long action time is greatly affected by factors such as noise, which makes it difficult to set.
LI Zhenxing +5 more
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Dynamic Time Warping Based Pilot Protection Algorithm for AC and HVDC Transmission Lines
IEEE Access, 2023 This paper presents a pilot protection algorithm for alternating (ac) and direct current (dc) transmission lines, the last in the line commutated converter and voltage source converter topologies.
Giovanni Manassero +1 more
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Zhongguo dianli, 2023 There are power electronic converters on both sides of the AC submarine line of flexible low-frequency transmission system, and the fault current characteristics are determined by the converter control strategy, which is different from the traditional ...
Weixuan HE +3 more
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Energies, 2023 The integration of distributed generation (DG) into the decentralized access of the distribution network transforms the existing structure into an active distribution network.
Lin Xu +5 more
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Parameter Evaluation Procedure for Gapped Core Current Transformers Considering Accuracy Requirements under Transient Conditions [PDF]
E3S Web of Conferences, 2020 Particular features of gapped core current transformers and characteristics of transient phenomena inside them are under consideration; a procedure is proposed that allows for evaluating the excitation limiting e.m.f.
Vorobiev Victor +6 more
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Non-Pilot Protection of the Inverter- Dominated Microgrid [PDF]
IEEE Access, 2019 Without utilizing costly communication systems, the existing protection strategies fail to reliably detect the occurrence and direction of faults in the inverter-dominated microgrid. To address this issue, this paper introduces a selective and reliable non-pilot protection strategy for the inverter-dominated microgrid. The proposed protection strategy (
Houman Lahiji +2 more
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Mechanically-assisted crevice corrosion and its effect on materials degradation
Corrosion Communications, 2023 Mechanically-assisted crevice corrosion (MACC) is a synergistic combination of wear and crevice corrosion. The major differences between tribocorrosion, fretting corrosion and MACC relate to the relative scale of motion and contact area, are clarified in
Weichen Xu +5 more
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Frontiers in Materials, 2022 Rail foot covered by a fastener will suffer from crevice corrosion, leading to thinning and localized attack of crevice interior posing a risk of failure. This work investigated crevice corrosion behavior of a typical pearlitic high-speed rail steel U75V,
Jian Wang +18 more
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