Results 31 to 40 of about 5,040 (292)

Optimization of the structure of insulating composite materials

Tehnički glasnik, 2019
The article deals with the interdependent relationship between the properties of a structure and the properties of a material, which sets the task of reducing them, even they are indistinguishable, to a certain integrity. The object of research and analysis in the article is a building structure, which is seen as an open self-organized complex ...
Kos, Zeljko, Vyrovoi, Valerii, Sukhanov, Volodymyr, Zavoloka, Mykhailo, Gokhman, Aleksandr, Grynyova, Iryna   +5 more
openaire   +4 more sources

Fiber Bragg grating monitors for thermal and stress of the composite insulators in transmission lines

Global Energy Interconnection, 2018
Running composite insulators are prone to failure due to their harsh surrounding work environment, which directly affects the safe operation of transmission lines.
Heming Deng, Wei Cai, You Song, Jinsong Liu, Christopher Redman, Qiandong Zhuang   +5 more
doaj   +1 more source

Study on the influence mechanism of ambient humidity on the temperature rise of decay‐like composite insulators

High Voltage, 2022
At present, observing the temperature rise of composite insulators is an effective method for the detection of decay‐like defects. However, ambient humidity will affect the temperature rise of composite insulators, which will cause problems in screening ...
Zheng Zhong, Yuan Chen, Yunpeng Liu, Sizu Hou, Jianghai Geng   +4 more
doaj   +1 more source

Studying AC Flashover Performance of Suspension Insulators Under Natural Cold Fog and Wet Deposition Conditions

IEEE Access, 2020
The electrical performance of insulators under comprehensive conditions including low air pressure, pollution and icing, is an important basis for the selection of external insulation.
Bingbing Dong, Zelin Zhang, Nianwen Xiang, Changsheng Gao, Jiale Song, Yu Gu   +5 more
doaj   +1 more source

Dry band formation mechanism of composite insulator with generalized finite difference-time domain

电力工程技术, 2022
The pollution flashover of composite insulators is mainly the flashover caused by alternate occurrence of arc development and dry band formation. At present, researchers have investigated the development of insulator arc along the surface.
HE Jiahong, DONG Bowen, HE Kang
doaj   +1 more source

Testing Method for Composite Insulators Interface Based on Nonlinear Ultrasonic

IEEE Access, 2019
The interface is the weakness of composite insulators. As the interface bonding fails, the uniform distribution of electric field will be affected, which accelerates the aging of composite insulators and affects the safe operation of transmission lines ...
Sida Zhang, Chenjun Guo, Li Cheng, Hanqing Wang, Ruijin Liao   +4 more
doaj   +1 more source

Full-Scale Testing on Seismic Performance of Surge Arrester with Retrofitted Composite Insulators

Buildings, 2022
In electrical substations, glass-fibre reinforced polymer (GFRP) insulators provide an alternative to porcelain insulators for better seismic performance.
Sheng Li, Yongfeng Cheng, Zhicheng Lu, Nelson Lam, Yaodong Xue, Haibo Wang   +5 more
doaj   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

Clinical Outcomes of SEEG‐Guided Radiofrequency Thermocoagulation in Children With Focal Drug‐Resistant Epilepsy: A Multicenter Real‐World Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Stereoelectroencephalography‐guided radiofrequency thermocoagulation (SEEG‐RFTC) has emerged as a safe and effective minimally invasive treatment for children with drug‐resistant focal epilepsy. Although evidence from real‐world studies remains limited, numerous pediatric cases have demonstrated promising outcomes. This retrospective
Weitao Chen, Stéphane Jean, Weihong Liu, Yihai Dai, Xinrong Fang, Xiaoqiang Wei, Shan Chen, Shiwei Song   +7 more
wiley   +1 more source

Voltage Distribution and Flashover Performance of 220 kV Composite Insulators under Different Icing Conditions

Energies, 2018
Composite insulators are widely used in modern power systems to provide electrical insulation and mechanical support for transmission lines and substations.
Jiazheng Lu, Pengkang Xie, Zhenglong Jiang, Zhen Fang, Wei Wu   +4 more
doaj   +1 more source