Results 81 to 90 of about 1,954,001 (140)

Prediction of First Commutation Failure and Dynamic Start-Up Threshold Tuning in LCC-HVDC Systems Considering Commutation-Voltage Phase Variation

Commutation failure is likely to occur when an AC fault occurs at the receiving end of an LCC-HVDC system. This threatens transient stability. Conventional commutation failure prevention (CFPREV) control mainly responds to commutation-voltage magnitude ...
Junpeng Ma, Hui Fang, Lumeng Luo, Qiang Li, Hongji Xiang   +4 more
core   +1 more source

Study on lightning overvoltage and commutation failure in UHV AC/DC hybrid system

, 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 ...
Yongshuai Chen, Liang Zou, Shengwei Fang, Yali Wang, Li Zhang   +4 more
core   +1 more source

Asymmetrical Advancing Angle Difference and its Application in Predicting Continuous Commutation Failure for LCC-HVDC Systems Under Asymmetrical Faults

Commutation failure (CF) is a frequent dynamic event at the inverter of LCC-HVDC systems caused by AC side faults, most of which are asymmetrical faults.
Xue, Ying, Zhang, Xiao-Ping; id_orcid, Chen, Nan; id_orcid   +2 more
core   +1 more source

A current deviation control parameter tuning method to suppress subsequent commutation failure

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
ZHU Longzhen, ZU Lifeng, LI Juan, WANG Xianwei, YANG Meijuan   +4 more
core   +1 more source

A review on evaluation and improvement methods for commutation failure resistance ability in multi-infeed direct current system

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 ...
Taoyu HUANG, Tuo WANG, Yupeng HE, Xiaoluo GAN, Guoqing LI, Yechun XIN   +5 more
core   +1 more source

Synthèse fonctionnelle des interrupteurs dans la cellule de commutation

, 2008
Cet article sur la commutation expose une démarche systématique orientée vers la synthèse des interrupteurs d'une cellule de commutation utilisée pour effectuer un transfert d'énergie contrôlé entre deux sources d'énergie complémentaires.
Foch, Henri, Meynard, Thierry, Richardeau, Frédéric, Metz, Michel, Piquet, Hubert   +4 more
core  

Gradient-Imidized polyimide interphase for cohesive-dominant failure and highly-reliable welding of CF/PPS composites

Copper mesh susceptors enable ultra-rapid, site-specific induction welding of carbon fiber reinforced polyphenylene sulfide (CF/PPS) composites via exceptional conductivity, yet their intrinsically weak adhesion with PPS matrix leads to premature joint ...
Zhang, Sen, Zhu, Shu, Su, Jiayu, Qian, Ying, Gao, Yu, Ji, Chengchang, Zhou, Jianfeng, Wang, Hao   +7 more
core   +1 more source

Measurement Induced Synthesis of Coherent Quantum Batteries. [PDF]

Sci Rep, 2019
Gumberidze M, Kolář M, Filip R.
europepmc   +1 more source

TOWARDS A NOVEL MODULAR ARCHITECTURE FOR CERN RADIATION MONITORING. [PDF]

Radiat Prot Dosimetry, 2017
Boukabache H, Pangallo M, Ducos G, Cardines N, Bellotta A, Toner C, Perrin D, Forkel-Wirth D.   +7 more
europepmc   +1 more source