Results 231 to 240 of about 64,242 (295)

Enhanced catalytic activity on atomically dispersed PtSe₂ two-dimensional layers. [PDF]

Nat Commun
Han G, Choi H, Kim JH, Kim D, Han SS, Park H, Lee SW, Kim KJ, Kim J, Kim MG, Jung Y, Kim HY, Park JY.   +12 more
europepmc   +1 more source

Surface Segregation Process and Its Influence on High-Temperature Corrosion of Iron-Based Alloys Containing Aluminium, Vanadium, Titanium and Germanium. [PDF]

Materials (Basel)
Sobota M, Idczak K, Konieczny R, Idczak R.   +3 more
europepmc   +1 more source

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An Inrush Current Suppression Strategy for UHV Converter Transformer Based on Simulation of Magnetic Bias

IEEE Transactions on Power Delivery, 2022
The Ultra High Voltage (UHV) converter transformer may generate serious inrush current during closing. It will cause commutation voltage distortion and easily result in commutation failure of converters on the same commutation bus.
Pingping Han, Qingyang Tong, Yan Wang, Zhong Chen, Wei Yang, Di Hu, Hongbin Wu, Jingjing Zhang   +7 more
semanticscholar   +1 more source

Influence of voltage fluctuations on core vibration of a UHV shunt reactor

International Journal of Applied Electromagnetics and Mechanics, 2021
A new core vibration calculation method of UHV shunt reactors is proposed to deal with the problem that vibration parameters of the core of an ultra-high voltage (UHV) shunt reactor cannot be measured on site.
Jiayi Guo, Jianghai Geng, F. Lü
semanticscholar   +1 more source

Switching impulse discharge characteristics of UHV transmission line air gaps

IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING, 2019
The design of external insulation for transmission lines is usually based on real‐type experiments. With the increasing voltage level of the transmission lines, in order to better design the experiments and reduce the experiment workload in the future ...
Jiachen Gao, Linong Wang, Qiushi Zhang, Bin Song, Kai Liu, Bin Xiao   +5 more
semanticscholar   +1 more source

Corrosion Mechanism of UHV Transmission Line Tower Foot in Southern China

IEEE Transactions on Power Delivery
Corrosion of tower foot in ultra-high voltage transmission lines is a critical issue for ensuring the safe operation of power grids. Recently, severe corrosion of tower foot has been observed on several UHV transmission lines in southern China ...
Xiaobo Meng, Wencan Chen, H. Mei, Liming Wang   +3 more
semanticscholar   +1 more source

UHV pumping equipment and the expanding field of UHV activity

Vacuum, 1990
Abstract There are a growing number of industrial applications that require processing in a clean environment at pressures in the range 10−9−10−11 mbar. The important design parameters for such systems, imposed by their production environment, are (1) time, (2) value of workload, (3) overall reliability and (4) operator competence, and these in turn ...
openaire   +1 more source

Numerical investigation of the seismic response of a UHV composite bypass switch retrofitted with wire rope isolators

Earthquake Engineering and Engineering Vibration, 2021
Zhenyu Yang, Q. Xie, Chang He, S. Xue
semanticscholar   +1 more source

Failure Risk of UHV AC Transmission Line Considering the Statistical Characteristics of Switching Overvoltage Waveshape

IEEE Transactions on Power Delivery, 2013
The sizes of ultra-high-voltage (UHV) towers and substations are related to the air clearances which are usually determined by switching overvoltage. Based on electromagnetic transient simulation of the first 1000-kV UHV ac transmission line in China ...
Yang Li, Jinliang He, Jun Yuan, Chen Li, Jun Hu, R. Zeng   +5 more
semanticscholar   +1 more source

Specialized UHV Systems

2015
There are advantages in using aluminum UHV systems. For proton synchrotrons, the residual radioactivity produced in stainless systems may be reduced by one or two orders of magnitude, 100 h after machine shutdown, by employing Al instead of stainless steel.
openaire   +1 more source