Results 21 to 30 of about 563,907 (301)

Control of MTDC Transmission Systems under Local Information [PDF]

open access: yes, 2014
High-voltage direct current (HVDC) is a commonly used technology for long-distance electric power transmission, mainly due to its low resistive losses.
Andreasson, Martin   +3 more
core   +2 more sources

Simulation of Influence of DC Pre-Stress on Space-Charge Characteristics of Cross-Linked Polyethylene in Inhomogeneous Field

open access: yesIEEE Access, 2020
Space charge is one of the main causes of electrical tree initiation in high-voltage cable insulation. To investigate the influence of DC pre-stress on the space-charge distribution of cross-linked polyethylene (XLPE), a two-dimensional needle-plate ...
Hechen Liu   +5 more
doaj   +1 more source

Voltage Stability Control Based on Angular Indexes from Stationary Analysis

open access: yesEnergies, 2022
This paper presents a novel methodology for the calculation of angular indexes of an electrical system from stationary analysis, using load flow and nose curves (P–V) in each of the buses of the system to perform control actions and preserve or improve ...
Gabriel J. Lopez   +4 more
doaj   +1 more source

Electric Transmission of Power [PDF]

open access: yesNature, 1891
YOUR article of the 1st inst. on the International Electrical Exhibition (p. 522), says: “In those days (before 1879) two wrong notions misled people—the one, that the maximum efficiency of a perfect electromotor could be only 50 per cent.; the other, quoting the remarks of Sir W.
openaire   +1 more source

Artificial Intelligence in Cable Fault Detection and Localization: Recent Advances and Research Challenges

open access: yesEnergies
With the large-scale integration of new power systems and distributed generators (DGs), cable fault detection and localization face numerous challenges, where artificial intelligence (AI) techniques demonstrate significant advantages.
Qianqiu Shao   +6 more
doaj   +1 more source

The Safety Monitoring and Warning System for Live Working Based on ToF Technology

open access: yesZhongguo dianli, 2020
Aiming at the deficiency of security monitoring and early warning means and methods for live working in China, a ToF (Time of flight)-based real-time safety monitoring and warning system is proposed for live working.
Wen LI   +5 more
doaj   +1 more source

Effect of Bismuth Ferrite Nanometer Filler Element Doping on the Surface Insulation Properties of Epoxy Resin Composites

open access: yesNanomaterials, 2021
In the direct current electric field, the surface of epoxy resin (EP) insulating material is prone to charge accumulation, which leads to electric field distortion and damages the overall insulation of the equipment. Nano-doping is an effective method to
Jun Xie   +5 more
doaj   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

open access: yesAdvanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti   +11 more
wiley   +1 more source

Detection of hydrophobicity grade of insulators based on AHC-YOLO algorithm

open access: yesScientific Reports
Thanks to the rapid development of image processing technology, the efficiency and accuracy of power inspection have been enhanced through deep learning techniques. However, during on-site inspections, the complexity of the background images of composite
Shaotong Pei   +7 more
doaj   +1 more source

Failure sensing and protection circuit for converter networks Patent [PDF]

open access: yes, 1971
Circuit design for failure sensing and protecting low voltage electric generator and power transmission ...
Jensen, K. J.
core   +1 more source

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