Results 31 to 40 of about 61,788 (299)

Approach for an integral power transformer reliability model [PDF]

, 2011
In electrical power transmission and distribution networks power transformers represent a crucial group of assets both in terms of reliability and investments.
J.M. Wetzer, Wouters, P.A.A.F., P.A.A.F. Wouters, E.F. Steennis, Wetzer, J.M., Wetzer, J Jos, Schijndel, van, A., Wouters, P.A.A.F.; id_orcid, Schijndel, A Arjan van, Steennis, EF Fred, Wouters, PAAF Peter, Steennis, E.F., A. van Schijndel   +12 more
core   +1 more source

Evaluation of Lightning Impulse Test by Frequency Response Analysis [PDF]

, 2006
In this work are presented the basis for improving the interpretation of transformer lightning impulse test and the development of a graphical user interface system, which allows comparisons of time domain data and frequency response.
Jorge Ramirez, Baudilio Valecillos, Valecillos, Baudilio, Ramírez, Jorge   +3 more
core   +1 more source

Application of Auxiliary Transformer Series Compensation Technology in Voltage Compensation of Power Voltage Transformer

Zhongguo dianli, 2020
In view of the fact that the supply voltage of power voltage transformer varies with load, this paper introduces a method of supply voltage compensation based on series compensation technology of auxiliary transformer.
Xuan LI, Kun LIU, Xichao LIU, Jiajing DING, Bing AI, Qiang SHI   +5 more
doaj   +1 more source

Experimental studies of influence of DC and AC electric fields on bridging in contaminated transformer oil

, 2015
Analysis of real operating condition revealed that HVDC transformers experience combined effect of DC biased AC electric field. The dynamics of pressboard particle in contaminated transformer oil under the influence of DC, AC and DC biased AC electric ...
Mahmud, S., Golosnoy, I.O., Chen, G., Wilson, G., Jarman, P.   +4 more
core   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

Power quality improvement using dynamic voltage restorer in electrical distribution system: an overview

, 2020
This paper represents a review of the dynamic voltage restorer for power quality improvement in the electrical distribution system. Over the past 50 years, issues concerning power quality have steadily increased, to prevent the effect of the voltage ...
Ali Basim Mohammed, Sofia Najwa Ramli, Mohammed, Ali Basim, Ramli, Sofia Najwa, Mohd Aifaa Mohd Ariff, Najwa Ramli, Sofia, Mohd Ariff, Mohd Aifaa   +6 more
core   +1 more source

Organoids in pediatric cancer research

FEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Study of Transformer Lifetime Due to Loading Process on 20 KV Distribution Line

Journal of Electrical, Electronics and Informatics, 2018
Power transformer is very important in electric power system due to its function to raise or lower the voltage according to its designation. On the power side, the power transformer serves to raise voltage to be transmitted to the transmission line.
A.A.N. Amrita, W.G. Ariastina, I.B.G. Manuaba   +2 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Impact of Reverse Power Flow on Distributed Transformers in a Solar-Photovoltaic-Integrated Low-Voltage Network

Energies, 2022
Modern low-voltage distribution systems necessitate solar photovoltaic (PV) penetration. One of the primary concerns with this grid-connected PV system is overloading due to reverse power flow, which degrades the life of distribution transformers.
Issah Babatunde Majeed, Nnamdi I. Nwulu
doaj   +1 more source