Results 31 to 40 of about 452 (193)

Research on On-Line Detection Method of Transformer Winding Deformation Based on VFTO

Sensors, 2021
At present, the detection of transformer winding deformation faults is carried out in an offline state, which requires the transformer to cooperate with the implementation of planned power outages, or it takes place after the sudden failure of the ...
Yanyun Wang, Guoqiong Zhou, Chunping Zeng, Wenbin Zhang, Yanan Ren, Yi Ke, Hequn Chu, Chunguang Suo   +7 more
doaj   +1 more source

Equivalent Modeling of Disconnector Operation Based on Dynamic Arc Characteristics and VFTO Characteristic Analysis

Energies
To thoroughly analyze the high-frequency and high-amplitude electromagnetic disturbances generated during disconnector operation, this paper proposes an equivalent modeling approach based on dynamic arc behavior.
Bin Liu, Yong Liu, Junjun Xiong, Xiaopin Deng, Zhenyu Guo, Xueyou Zhang, Bingyu Mei, Zhenhua Li   +7 more
doaj   +1 more source

Achievement of Transition Metal Chalcogenides/Oxides in Hydrogen Production by Seawater Electrolysis

EcoEnergy, EarlyView.
Transition metal chalcogenides (TMCs)/oxides have shown great application potential in seawater splitting for hydrogen generation due to their adjustable electronic properties, abundant active sites, and excellent catalytic performance. ABSTRACT Under the impetus of global “dual carbon” goals, green hydrogen has become a key component of the future ...
Xiaohui Du, Xinyu Li, Jianna Li, Tao Sun
wiley   +1 more source

Study of the behavior of low voltage ZnO varistors against very fast transient overvoltages (VFTO). [PDF]

, 2021
IlustracionesCaracterización de varistores de ZnO ante sobretensiones transitorias con tiempo de frentes muy rápidos (VFTO) Este trabajo presenta la caracterización de un tipo de varistores de ZnO ante sobretensiones transitorias con tiempo de frente muy
Rojo Ceballos, Clara Rosa
core  

Laser‐Textured Field‐Engineered Interface for Robust Dry‐Processed Cathodes in Lithium‐Ion Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Laser‐patterned dry electrodes applied to current collectors could serve as a promising alternative to the limitations of conventional dry electrodes. Laser technology provides a fast and simple method to enhance the surface roughness of current collectors, improving the adhesion at the electrode–current collector interface.
Chaerin Jung, Jinyeong Choi, Minsu Kim, Chaerim Kim, Minbong Park, Byungjoon Lee, Jae Ho Kim, Jin Hong Lee, Minjoon Park   +8 more
wiley   +1 more source

Simultaneous Electrochemical and Inductively Coupled Plasma Optical Emission Spectroscopy Measurements on AA 7075

Materials and Corrosion, EarlyView.
Schematic representation of the operando ICP‐OES setup during the electrochemical experiment (left). Resulting plot showing the dissolution of the individual alloy components of AA7075 as a function of applied potential in 10 mM NaCl (right). ABSTRACT This publication deals with the simultaneous acquisition of electrochemical and inductively coupled ...
Claudia Kutzer‐Schulze, Michael Schneider, Alexander Michaelis   +2 more
wiley   +1 more source

Interference Analysis of Very Fast Transient Overvoltages in Gas-Insulated Substations Using a Hybrid Algorithm

Sukkur IBA Journal of Emerging Technologies
The reliable and efficient computational approach for the cable interference in gas insulated substations (GIS) is presented. The hybrid domain decomposition method-multilevel fast multi-pole algorithm (DDM-MLFMA) is presented herein.
Muhammad Bilal, Hafiz Muhammad Azib Khan, Abdul Mueed, Kamran Liaqat Bhatti, Syed Safdar Raza, Muhammad Siddique   +5 more
doaj   +1 more source

A Novel Power Transformer Condition Monitoring System Based on Wide-Band Measurement of Core Earth Signals and Correlation Analysis With Multi-Source Data

IEEE Access, 2019
On-line condition monitoring and real-time fault detection are essential to protect power transformers from unscheduled outage of services. The core earth signals (CES) are valuable for fault detection and diagnosis of power transformers, as they are ...
Xuezhi Ke, Lisheng Pang, Xiang Dong, Zhaohui Li   +3 more
doaj   +1 more source

Response of 10-kV Metal-Oxide Surge Arresters Excited by Nanosecond-Level Transient Electromagnetic Disturbances

, 2021
Nanosecond-level transient electromagnetic disturbance (TED), including very fast transient overvoltage caused by operation of disconnectors, high-altitude electromagnetic pulse, and many other fast transients may interfere or even damage the electrical ...
Dong N., Chen Y. -H., Zhang D. -Z., Xie Y. -Z., Jing Y., Zhou Y.   +5 more
core   +1 more source

Application of thyristor controlled phase shifting transformer excitation impedance switching control to suppress short-circuit fault current level

Journal of Modern Power Systems and Clean Energy, 2018
Short-circuit fault current suppression is a very important issue in modern large-interconnected power networks. Conventional short-circuit current limiters, such as superconducting fault current limiters, have to increase additional equipment ...
Jun LIU, Xudong HAO, Xu WANG, Yefu CHEN, Wanliang FANG, Shuanbao NIU   +5 more
doaj   +1 more source