Results 211 to 220 of about 13,614 (252)

Early Warning and Inhibition of HVDC Subsequent Commutation Failure During Recovery Process Under Grid Fault

IEEE Transactions on Power Delivery, 2021
Initiation of ac fault may lead to the commutation failure, and the high-voltage direct current (HVDC) system is still confronted with the risk of subsequent commutation failure (SCF) during recovery process prior to the fault clearance. In this paper, the mechanism of subsequent commutation failure is investigated through the analysis of controller ...
Dachuan Tian, Xiaofu Xiong, Chao Xiao
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Subsequent Commutation Failure Prediction of HVDC by Integrating Physical-driven and Model-driven Methods

2020 4th International Conference on HVDC (HVDC), 2020
Commutation failure (CF) is one of the most common faults in traditional HVDC system. Effective prediction of CF is beneficial to the safety and stability of the power system. The physical-driven prediction method can effectively reflect the causal law but it is difficult to establish a precise model.
Chengchen Huang, Wanchun Qi, Quanquan Wang, Rui Gu, Chenyi Zheng, Yi Tang   +5 more
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Analysis and Prevention of Subsequent Commutation Failures Caused by Improper Inverter Control Interactions in HVDC Systems

IEEE Transactions on Power Delivery, 2020
This paper presents the essential reason for subsequent commutation failures (SCFs) in high voltage direct current (HVDC) systems, and accordingly proposes a novel adaptive extinction angle recovery (AEAR) control strategy to prevent SCFs. Firstly, based on the changes of the inverter control mode after the first CF, the interaction process of inverter
Lei Liu, Sheng Lin, Jian Liu, Peiyao Sun, Kai Liao, Xiaopeng Li, Zhengyou He   +6 more
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A HVDC Subsequent Commutation Failure Mitigation Strategy Based on Modified Firing Angle Order by Firing Angle Measurements

2020 4th International Conference on HVDC (HVDC), 2020
Commutation failures in line commutated converter based high voltage direct current systems (LCC-HVDC), especially continuous commutation failures, can easily cause lockup in DC systems, and drastic power changes and protection malfunctions in AC systems.
Cong Xinpeng, Zheng Xiaodong, Cao Yaqian, Tai Nengling, Zhou Hubin, Yang Zengli   +5 more
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Prevention Strategy for Subsequent Commutation Failure in LCC-HVDC System under Unbalanced Faults

2022 IEEE/IAS Industrial and Commercial Power System Asia (I&CPS Asia), 2022
Ahmed Omer, Xiaohui Wang, Kaige Song, Zhenjian Xie, Chen Li   +4 more
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Subsequent Commutation Failure Suppression Method Based on Optimized Current Error Controller Parameters

2022 4th International Conference on Smart Power & Internet Energy Systems (SPIES), 2022
Zhixian Li, Chongru Liu, You Zuo, Yibo Shi   +3 more
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Mechanism Analysis of Subsequent Commutation Failure Considering PLL Dynamics in LCC-HVDC Systems

2022 IEEE 5th International Electrical and Energy Conference (CIEEC), 2022
Minghui Ban, Meng Zhan
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Enhanced Extinction Angle Control for Subsequent Commutation Failure Mitigation Considering Harmonic Voltages Variation

2023 4th International Conference on Advanced Electrical and Energy Systems (AEES), 2023
Hui Cai, Zhuyi Peng, Wentao Sun, Sixuan Xu, Wanchun Qi, Zhenjian Xie   +5 more
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Research on HVDC Subsequent Commutation Failure Suppression Strategy Considering Energy Storage Phase Modulation Operation

2021 IEEE Sustainable Power and Energy Conference (iSPEC), 2021
Cangbi Ding, Wenchao Zhu, Siqi Liu, Wentian Cui, Zhijun Zhang, Junjie Wu   +5 more
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A General Self-Adaptive DC Current Control of LCC-HVDC for Eliminating Subsequent Commutation Failure

IEEE Transactions on Power Delivery, 2023
Dongdong Li, Yi Gao, Mengxian Sun
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