Results 21 to 30 of about 10,525,702 (295)
Topological tracking of connected components in image sequences [PDF]
Journal 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
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VSC control strategy for HVDC compensating negative sequence and decaying DC components
Energy 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
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Earth Fault Location Using Negative Sequence Currents
Energies, 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
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Effects of Negative Sequence Voltage Subharmonics on Cage Induction Motors
Energies, 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
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Two-Terminal Algorithm Analysis for Unsymmetrical Fault Location on 110 kV Lines
Energies, 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
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THE RADIAL DISTRIBUTIONS OF THE TWO MAIN-SEQUENCE COMPONENTS IN THE YOUNG MASSIVE STAR CLUSTER NGC 1856 [PDF]
, 2016 The recent discovery of double main sequences in the young, massive star cluster NGC 1856 has caught significant attention. The observations can be explained by invoking two stellar generations with different ages and metallicities or by a single ...
Chengyuan Li +3 more
semanticscholar +1 more source
Analysis on the Applicability of Phase Selection Components of Inverter Power Supply Transmission Line [PDF]
E3S 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
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Journal of Electrical and Computer Engineering, 2019 The intention of fault detection is to detect the fault at the beginning stage and shut off the machine immediately to avoid motor failure due to the large fault current.
Gayatridevi Rajamany +3 more
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Admissible sequences and the preprojective component of a quiver
Advances 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.
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Considerations on the Mathematical model for Calculating the Single-phase Grounding [PDF]
Journal 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
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