Results 11 to 20 of about 1,954,001 (140)
A Novel Sub-Module-Based Line-Commutated Converter That Is Actively Resistant to Commutation Failure
ActuatorsTo improve the ability of line-commutated converters (LCCs) to resist commutation failure (CF) when a fault occurs on the AC side, a novel sub-module-based LCC topology actively resistant to CF is proposed in this paper.
Hongchun Shu, Junjie Zhang, Yaoxi Jiang
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A fast and high‐accurate commutation failure identification method for LCC‐HVDC system
High VoltageCommutation failure (CF) is one of the most common issues in line‐commuted converter‐based high voltage direct current systems (LCC‐HVDC), leading to critical power system security and stability problems.
Jing Feng +5 more
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Journal of Modern Power Systems and Clean Energy, 2018 This paper presents a novel commutation failure (CF) assessment method considering the influences of voltage magnitude drop, phase shift, and spatial-temporal discreteness of AC system faults.
Huanhuan YANG +3 more
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IET Power ElectronicsTo solve the commutation failure (CF) issues in high voltage direct current (HVDC) transmission systems based on line commutated converter (LCC), this paper proposes a hybrid solution combining the LCC inverter with the continuously controlled IGCT‐based
Yindi Liu +3 more
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Energy Conversion and Management: XIn line-commuted converter based high voltage direct current (LCC-HVDC), commutation failure (CF) is a main source of danger. The CF is usually suppressed by regulating the single electrical quantity.
Shoudong Xu +4 more
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Commutation Failure Control Strategy of UHVDC Transmission Considering Initial Fault Angle
Taiyuan Ligong Daxue xuebao[Purposes] Commutation failure (CF) is one of the common faults in the line-commutated converter-based Ultra-high Voltage Direct Current (LCC-UHVDC). In order to reduce the probability of CF in DC transmission, a lot of research on CF control strategies ...
CHENG Gong +4 more
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Heisenberg-Lie commutation relations in Banach algebras. [PDF]
, 2009 Given q1, q2 ∈ ℂ { 0 }, we construct a unital Banach algebra Bq1, q2 that contains a universal normalised solution to the (q1, q2)-deformed Heisenberg-Lie commutation relations in the following specific ...
Laustsen, Niels Jakob +1 more
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Energy Reports, 2022 In the traditional high voltage direct current (HVDC) systems, commutation failure (CF) fault is one major challenge, and the transient var characteristic of the inverter station is an essential factor in the counter measures against CF fault.
Wen Hua +3 more
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Analysis and prevention of commutation failure caused by HVDC rectifier AC faults
IET Generation, Transmission & Distribution, 2022 Earlier works have reported that rectifier AC faults also can cause commutation failure during fault‐off recovery process. Whereas the occurrence of CF is merely ascribed to inverter AC faults in conventional wisdom.
Sheng Lin, Yuqing Lei, Jian Liu, Lei Liu
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An Evaluation Method for Commutation Failure Caused by Waveform Distortion
, 2021 Commutation failure is a key issue that affects the safe operation of HVDC transmission systems. Scholars at home and abroad have conducted research on the mechanism, evaluation indicators, and control strategies of commutation failure.
Hao Zhou, Can Su
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