Results 21 to 30 of about 877,581 (317)

Transmission Line Fault Diagnosis Method Based on Improved Multiple SVM Model

IEEE Access, 2023
The accurate diagnosis of transmission line fault types is a prerequisite for quickly removing faults and restoring power supply, as well as the key to effectively reducing user economic losses, ensuring stable operation of the power system.
Peichuan Sun, Xuefei Liu, Meng Lin, Jie Wang, Tao Jiang, Yibo Wang   +5 more
doaj   +1 more source

Study on internet of things architecture of substation online monitoring equipment [PDF]

MATEC Web of Conferences, 2021
This paper introduces the structure of the existing on-line monitoring system, and analyzes the problems of poor compatibility and reliability of IED in different manufacturers.
Zhang Hejun, Ge Dong, Yang Ning, Jia Pengfei, Li Lihua, Yang Yang   +5 more
doaj   +1 more source

On specification-based cyber-attack detection in smart grids

Energy Informatics, 2022
The transformation of power grids into intelligent cyber-physical systems brings numerous benefits, but also significantly increases the surface for cyber-attacks, demanding appropriate countermeasures.
Ömer Sen, Dennis van der Velde, Maik Lühman, Florian Sprünken, Immanuel Hacker, Andreas Ulbig, Michael Andres, Martin Henze   +7 more
doaj   +1 more source

Electrical Treeing of SiR and SiR/Fe₃O₄ Nanocomposites in High Magnetic Field

IEEE Access, 2023
This paper investigates the effects of high magnetic field on electrical treeing of silicone rubber (SiR). Experimental results show that electrical trees are more easily to be initiated and spread further along the direction of electric field under the ...
Mingyang Wang, Xuegong Yin, Yuhao Liu, Boxue Du, Congzhao Xue   +4 more
doaj   +1 more source

Support for standardisation of high voltage testing with composite and combined wave shapes

, 2021
As part of the production of equipment for high voltage electricity grids, high voltage tests are performed to verify that the equipment can withstand the operational voltage stresses.
Orrea, A.,, Elg, Alf Peter,, Schichler, U.,, Gockenbach, E.,, Merev, A.,, Garnacho, F.,, Havunen, J.,, Roccato, P. E.,, Steiner, T.,, Meisner, J.,, Gamlin, M.,, Saadeddine, H.,, Lahti, K.,, Backhaus, K.,   +13 more
core  

Transient voltage stresses in MMC–HVDC links – impulse analysis and novel proposals for synthetic laboratory generation

High Voltage, 2018
To evaluate and optimise insulation coordination concepts for state of the art high-voltage direct current (HVDC) transmission systems, appropriate test voltage shapes are required for laboratory imitation of occurring stresses.
Claudius Freye, Simon Wenig, Max Goertz, Thomas Leibfried, Frank Jenau   +4 more
doaj   +1 more source

Deep Learning in High Voltage Engineering: A Literature Review

, 2022
Condition monitoring of high voltage apparatus is of much importance for the maintenance of electric power systems. Whether it is detecting faults or partial discharges that take place in high voltage equipment, or detecting contamination and degradation
Behzad Kordi, Ayman El-Hag, Abdulla Lutfi, Hamed Moradi Tavasani, Ahmed Ashraf, Sara Mantach   +5 more
core   +1 more source

Partial Discharge Behaviour of a Protrusion in Gas-Insulated Systems under DC Voltage Stress

Energies, 2020
High reliability, independence from environmental conditions, and the compact design of gas-insulated systems will lead to a wide application in future high voltage direct current (HVDC) transmission systems.
Thomas Götz, Hannah Kirchner, Karsten Backhaus   +2 more
doaj   +1 more source

Recent advances in High-Voltage direct-current power transmission systems

, 2006
The ever increasing progress of high-voltage high-power fully-controlled semiconductor technology continues to have a significant impact on the development of advanced power electronic apparatus used to support optimised operations and efficient ...
Nikolas Flourentzou, Demetriades, G.D., Vassilios G. Agelidis, Georgios D. Demetriades, Flourentzou, N., Agelidis, V.G.   +5 more
core   +1 more source

Carcinomas and Carcinoid Tumors of the Lungs and Bronchi in Children and Adolescents: The EXPeRT Recommendations

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Primary lung carcinomas and bronchial carcinoid tumors (BC) are very rare malignancies in childhood. While typical BC and mucoepidermoid carcinomas are mostly low‐grade, localized tumors with a more favorable prognosis than in adults, necessitating avoidance of overtreatment, adenocarcinomas of the lung are often diagnosed at advanced disease ...
Michael Abele, Calogero Virgone, Michaela Kuhlen, Sabine Irtan, Yves Reguerre, Malgorzata Krawczyk, Ewa Bien, Tal Ben‐Ami, Maja Cesen, Ricardo Lopez‐Almaraz, Andrea Ferrari, Gianni Bisogno, Dominik T. Schneider, Abbas Agaimy, Constantin Lapa, Hubert Ducou le Pointe, Rainer Claus, Catherine Daniel, Ines B. Brecht, Daniel Orbach   +19 more
wiley   +1 more source