Results 21 to 30 of about 3,066,783 (329)
IET Energy Systems IntegrationThe inverter side of hybrid cascaded HVDC adopts the structure of Modular Multilevel Converter (MMC) in series with Line Commutated Converter (LCC). The complete system amalgamates the advantages of LCC with MMC, but it also makes the interaction process
He Wang +4 more
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International Journal of Electrical Power & Energy SystemsHVDC systems are vulnerable to commutation failure due to insufficient commutation margin during AC faults, which threatens system stability. Existing optimization strategies are often computationally complex and heavily reliant on simulation models ...
Tongtong Zhang, Shuqing Zhang
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An Evaluation Method for Commutation Failure Caused by Waveform Distortion [PDF]
E3S Web of Conferences, 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.
Zhou Hao, Su Can, Zhou Hao
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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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IET Generation, Transmission & Distribution, 2022 Concerning the insufficient accuracy of the criterion for identifying commutation failure in HVDC transmission systems, a new detection method for commutation failure based on the variation rate of commutation inductance energy is proposed.
Jing Ma, Chen Liu, Peng Cheng
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Adaptive firing angle compensation control for mitigating DC subsequent commutation failure
电力工程技术, 2022 Subsequent commutation failure of the high voltage direct current (HVDC) transmission system has a seriously negative impact on the stable operation of the AC-DC hybrid power grid.
YANG Chengxiang +5 more
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Suppression strategy for subsequent commutation failure of DC system based on improved VDCOL
电力工程技术, 2022 Aiming at the problem of subsequent commutation failure during the fault recovery period after the first commutation failure of high voltage direct current system,the recovery process is divided into the first commutation failure (stage 1),the beginning ...
CHEN Ruikang +3 more
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Research on Battery Energy Storage STATCOM Suppressing HVDC Commutation Failure
Frontiers in Energy Research, 2022 Due to the poor performance of traditional STATCOM in DC engineering, a compensation method using battery energy storage STATCOM (STATCOM/BESS) to suppress commutation failure of the weak receiving-end high voltage direct current transmission system is ...
Chao Xing +6 more
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Research on Commutation Failure in Multi-feed HVDC Transmission System
发电技术, 2020 HVDC transmission systems present a risk of commutation failure. For multi-infeed HVDC transmission systems, due to the interaction between AC and DC systems, the commutation failure of a single inverter station may cause multiple inverter stations to ...
Jiaming WANG, Hao YU, Wuhui CHEN
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