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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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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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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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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Mixing Bandt-Pompe and Lempel-Ziv approaches: another way to analyze the complexity of continuous-states sequences [PDF]
, 2014 In this paper, we propose to mix the approach underlying Bandt-Pompe permutation entropy with Lempel-Ziv complexity, to design what we call Lempel-Ziv permutation complexity.
A. Lempel +44 more
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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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Galaxy Formation by Galactic Magnetic Fields [PDF]
, 1999 Galaxies exhibit a sequence of various morphological types, i.e., the Hubble sequence, and they are basically composed of spheroidal components (elliptical galaxies and bulges in spiral galaxies) and disks.
Baugh C. M. +9 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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Power control strategies during voltage sags according to Spanish grid code [PDF]
, 2018 In order to connect any power converters into the grid there are some grid requirements to insure the safe operation of the grid. So, the control of the converters especially during abnormal condition e.g. during voltage sags is
Bakkar, Mostafa +4 more
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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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