Results 11 to 20 of about 3,029,816 (219)
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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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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A controllable thyristor-based commutation failure inhibitor for LCC-HVDC transmission systems [PDF]
, 2021 Commutation failure is a serious malfunction in line-commutated high voltage direct current (HVdc) converters which is mainly caused by the inverter ac faults, and results in a temporary interruption of transmitted power and damage to the converter ...
Mat Said, Dalila +5 more
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, 2022 The commutation failure of high voltage direct current (HVDC) systems could lead to unstable operation of the alternating current/direct current (AC/DC) hybrid power grid.
Zeyu Cao +5 more
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Adaptive VDCOL control strategy for the recovery of the UHVDC SPC system
The Journal of Engineering, 2019 The separating pole connection (SPC) mode of ultra-high-voltage direct current (UHVDC) can significantly improve the power stability, but when the AC bus of one pole is failed and two receiving systems are near, it may cause subsequent commutation ...
Shujun Yao +3 more
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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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Review of Research on Voltage Dependent Current Order Limiter for Commutation Failure Mitigation [PDF]
Dianli jianshe[Objective] The objective of this study is to systematically sort out the research status of the voltage dependent current order limiter（VDCOL）improvement method to enhance the ability of VDCOL control to commutation failure in high-voltage direct ...
ZHU Xuan, TANG Yi, ZHENG Chenyi, WANG Ying, DANG Jie, CUI Ting
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A predictive control strategy for mitigation of commutation failure in LCC-based HVDC systems [PDF]
, 2019 High-voltage direct-current (HVDC) systems are being widely employed in various applications because of their numerous advantages such as bulk power transmission, efficient long-distance transmission, and flexible power-flow control.
Mat Said, Dalila +5 more
core +5 more sources
The HVDC commutation failure mechanism impacted by harmonics and its suppression method
Frontiers in Energy ResearchHarmonics are an important cause of voltage distortion, and voltage reduction and voltage distortion are the main causes of commutation failure. But most of the current research studies on commutation failure are based on the drop in fundamental voltage ...
Guojiang Zhang +4 more
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Energies, 2018 Accurate detection and effective control strategy of commutation failure (CF) of high voltage direct current (HVDC) are of great significance for keeping the safe and stable operations of the hybrid power grid.
Tao Lin +4 more
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