Results 11 to 20 of about 1,303 (282)
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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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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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. The control strategy and the parameters of the proposed sub-module are elaborately designed.
Hongchun Shu, Junjie Zhang, Yaoxi Jiang
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Studies of commutation failures in hybrid LCC/MMC HVDC systems [PDF]
Global Energy Interconnection, 2020 A hybrid of line commutated converters (LCCs) and modular multi-level converters (MMCs) can provide the advantages of both the technologies. However, the commutation failure still exists if the LCC operates as an inverter in a hybrid LCC/MMC system.
Gen Li +6 more
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Suppression measures of commutation failure in MIDC transmission systems
The Journal of Engineering, 2019 With the increasing of direct current (DC) transmission capacity, high-voltage DC (HVDC) location has become more and more intensive, and commutation failure has become increasingly prominent in multi-infeed DC (MIDC） transmission systems.
Wang Qing, Liu Kaipei, Wang Ling
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电力工程技术The evaluation and improvement methods for commutation failure resistance ability in multi-infeed direct current (MIDC) system are of great significance for testing commutation failure characteristics, addressing assessment challenges, and applying ...
Yechun XIN +5 more
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Energies, 2018 With the increased use of high voltage direct current (HVDC) systems, line commutated converters (LCC-HVDC) and voltage source converters (VSC-HVDC) tend to feed into AC systems over short electrical distances.
Chao Xiao +5 more
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A current deviation control parameter tuning method to suppress subsequent commutation failure
电力工程技术If a subsequent commutation failure occurs in the line commutated converter-based high voltage direct current (LCC-HVDC) transmission system, it will have a seriously negative impact on the safe and stable operation of the AC-DC hybrid power grid. Aiming
LI Juan +4 more
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The Journal of Engineering, 2018 Commutation failure caused by the fault of AC system at inverter side seriously affects the safety and stability of high-voltage direct current (HVDC) system.
Jinzhao Song +3 more
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Study on lightning overvoltage and commutation failure in UHV AC/DC hybrid system
The Journal of Engineering, 2019 Due to the high UHV AC/DC transmission line tower, the working voltage amplitude on the wire is large, causing lightning accidents. The paper first analyses the impact of lightning strike point on lightning overvoltage of 1000 kV UHV transformer ...
Shengwei Fang +4 more
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