Results 11 to 20 of about 1,118,063 (263)

VSC control strategy for HVDC compensating negative sequence and decaying DC components

open access: yesEnergy Reports, 2023
This paper proposes a voltage source converter (VSC) control strategy for the high voltage direct current (HVDC) transmission systems compensating the negative sequence and decaying DC (DDC) components. The mathematical model of the grid fault current is
Wu Yanwei   +4 more
doaj   +1 more source

Topological tracking of connected components in image sequences [PDF]

open access: yesJournal of Computer and System Sciences, 2018
Persistent homology provides information about the lifetime of homology classes along a filtration of cell complexes. Persistence barcode is a graphical representation of such information. A filtration might be determined by time in a set of spatiotemporal data, but classical methods for computing persistent homology do not respect the fact that we can
Rocio Gonzalez-Diaz   +2 more
openaire   +5 more sources

Effects of Negative Sequence Voltage Subharmonics on Cage Induction Motors

open access: yesEnergies, 2022
In some power systems, voltage waveforms contain, apart from harmonics, interharmonics and subharmonics that are components of frequency less than or not an integer multiple of the fundamental frequency.
Piotr Gnaciński   +4 more
doaj   +1 more source

Earth Fault Location Using Negative Sequence Currents

open access: yesEnergies, 2019
In this paper, a new method for locating single-phase earth faults on non-effectively earthed medium voltage distribution networks is proposed. The method requires only current measurements and is based on the analysis of the negative sequence components
Amir Farughian   +2 more
doaj   +1 more source

Two-Terminal Algorithm Analysis for Unsymmetrical Fault Location on 110 kV Lines

open access: yesEnergies, 2019
This work analyses a two-terminal algorithm designed to locate unsymmetrical faults on 110 kV power transmission lines. The algorithm processes synchronized voltage and current data obtained from both ends of the protected transmission line and ...
Zuzana Bukvisova   +3 more
doaj   +1 more source

Analysis on the Applicability of Phase Selection Components of Inverter Power Supply Transmission Line [PDF]

open access: yesE3S Web of Conferences, 2020
This article analyzes the applicability of AC line phase selection components in the context of large-scale offshore wind farms through multi-terminal flexible direct transmission.
Shuo Xu, Bingyuan Yang, Dongsheng Li
doaj   +1 more source

Admissible sequences and the preprojective component of a quiver

open access: yesAdvances in Mathematics, 2005
Let \((\Gamma,\Lambda)\) be a quiver (\(\Gamma\) a graph with possibly multiple edges, \(\Lambda\) its orientation). Assume it is finite and has no oriented cycles. The paper concerns the Bernstein-Gelfand-Ponomarev reflection functors on the category \(\text{f.d.}k(\Gamma,\Lambda)\) of finite dimensional representations of \((\Gamma,\Lambda)\) over a ...
Kleiner, Mark, Tyler, Helene R.
openaire   +2 more sources

Clustering Molecular Sequences with Their Components.

open access: yesGenome informatics. Workshop on Genome Informatics, 1997
Motivation: Several methods in genetic information have recently been developed to estimate classification of protein sequences through their sequence similarity. These methods are essential for understanding the function of predicted open reading frames (ORFs) and their molecular evolutionary processes. However, since many protein sequences consist of
Suharnan, Sivasundaram   +3 more
openaire   +2 more sources

Considerations on the Mathematical model for Calculating the Single-phase Grounding [PDF]

open access: yesJournal of Electrical and Electronics Engineering, 2013
In this paper are presented the results obtained using a mathematical model, conceived in order to analyze the effects of grounding faults that occur in a medium voltage network. Measurements were made on a real electric network. Calculated results using
TATAI Ildiko   +3 more
doaj  

Exploring the sequential accumulation of metabolic syndrome components in adults

open access: yesScientific Reports, 2022
The metabolic syndrome (MetS) is diagnosed upon the manifestation of ≥ 3 out of 5 specific components, regardless of their combination. The sequence through which these components accumulate may serve to identify underlying pathophysiological mechanisms ...
Rodrigo Fernández-Verdejo   +1 more
doaj   +1 more source

Home - About - Disclaimer - Privacy