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Visualization and Characterization of Stability Swings via GPS-Synchronized Data
2007
2007 40th Annual Hawaii International Conference on System Sciences (HICSS'07)
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Presently, PMU data precision from substation installed devices is practically unknown. On the other hand, specific applications of PMU data require specific accuracy of data. ...
GPS-synchronized equipment (PMUs) is in general higher precision equipment as compared to typical SCADA systems. ...
Description of the Dynamic State Estimator (DSE) Given a set of measurements, the state of the system is computed via the well known state estimation approaches. ...
doi:10.1109/hicss.2007.607
dblp:conf/hicss/CokkinidesMSAM07
fatcat:fhbao4iqxbazte6ben647flgwe
Application of Dynamic State and Parameter Estimation Techniques on Real-World Data
2013
IEEE Transactions on Smart Grid
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Dynamic state and parameter estimation can estimate equivalent generator internal voltages and rotor angles (dynamic states) during electromechanical dynamics. ...
A set of real world data recorded by Eastern Interconnection Phasor Measurement Units (PMU) regarding a generator trip event is analyzed in this paper. ...
ACKNOLOWLEDGEMENT The authors would like to acknowledge the help from Midwest ISO (Terry Bilke and Anna Zwergel) for providing RTDMS data and help in real-world data analysis. Prof. ...
doi:10.1109/tsg.2012.2230031
fatcat:guah3rzcxzbtfeon2jbvhymygi
Instantons in Self-Organizing Logic Gates
2018
Physical Review Applied
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Our work provides a physical understanding of, and can serve as an inspiration for, new models of bi-directional logic gates that are emerging as important tools in physics-inspired, unconventional computing ...
By linear analysis at those points, we show that these instantons connect the initial critical point of the dynamics, with at least one unstable direction, directly to the final fixed point. ...
S.B. acknowledges support from the Alfred P. Sloan Foundation's Minority Ph.D. Program. H.M. acknowledges support from a DoD-SMART fellowship. ...
doi:10.1103/physrevapplied.9.034029
fatcat:rzxe6kqfrrervo5rjii2zizofq
Phase Synchronization Dynamics of Neural Network during Seizures
2018
Computational and Mathematical Methods in Medicine
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Results showed that there was a significant increase of synchronization prior to seizure termination and no significant difference of the transitions of network states among the preseizure, seizure, and ...
Those results indicated that synchronization might participate in termination of seizures, and the network states transitions might not dominate the seizure evolution. ...
flow direction and may be helpful to measure the interactions among signals. ...
doi:10.1155/2018/1354915
pmid:30410569
pmcid:PMC6205102
fatcat:b3x36c2g3nahdiuwp267rjkgu4
Network experiment demonstrates converse symmetry breaking
2020
Nature Physics
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2020 pre-print arXiv:2009.05582v1 fatcat:mwm5tpo6anf4lbtgpvnhhe4btuOther Versions
These results have implications for the optimization and control of network dynamics in a broad class of systems whose function benefits from harnessing uniform behavior. ...
Symmetry breaking--the phenomenon in which the symmetry of a system is not inherited by its stable states--underlies pattern formation, superconductivity, and numerous other effects. ...
We then apply the Kirchoff law again to the internal impedance of each generator (assuming the classical model) to compute |E i | and δ * i from P i , Q i , |V i |, and θ i . ...
doi:10.1038/s41567-019-0742-y
fatcat:cyfwpxwd45hnrhbxekcdsvppsy
A Novel Approach to PID Controller Design for Improvement of Transient Stability and Voltage Regulation of Nonlinear Power System
2016
International Journal of Electrical and Computer Engineering (IJECE)
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The direct feedback linearization (DFL) technique is used to linearize the nonlinear system for computing the PID (DFL-PID) controller parameters. ...
The performance of this controlled system is compared with the performance of DFL-state feedback controlled power system. ...
ACKNOWLEDGEMENTS The author gratefully acknowledges the support provided by National Institute of Technology, Jamshedpur, India. ...
doi:10.11591/ijece.v6i5.10818
fatcat:nve6iv5psbgsffpymksjymqqou
Study of Combining DVB-SH Signals from Satellite and Terrestrial Repeater
2014
International Journal of Future Computer and Communication
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Thus, the purpose of this paper is to discuss the feasibility of signal combining for DVB-SH terminals and to find out whether there is an improvement to be obtained by combining the signals from satellite ...
In DVB-SH (Digital Video Broadcasting-Satellite services to Handhelds) systems, mobile terminals can receive either a signal from a broadcasting satellite or a signal from a terrestrial repeater. ...
The first one receives the signal in band Fig. 1 from 288 International Journal of Future Computer and Communication, Vol. 3, No. 4, August 2014 C. ...
doi:10.7763/ijfcc.2014.v3.313
fatcat:fchv2nbmcjgwbezzyokndhek2i
Computer Simulation of Power Deviation, Admittance Distance, Coherency Indices, and Dynamic Equivalents for Electric Power Systems
2014
International Journal of Computer Applications
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The simulation decomposes the power system generators into the study and external areas by computing the power deviation of all generators during a fault. ...
The simulation features the computation of admittance distance, inertia and damping indices for the identification of coherent machines, and dynamic equivalents. ...
This techniques leads to a modification of the transient reactance connected from the equivalent internal bus to the network terminal buses. ...
doi:10.5120/17697-8671
fatcat:lo5nk7asyfgonoufoe7gpvg54m
Voltage instability identification with modified L-index using synchrophasor data
2021
Indonesian Journal of Electrical Engineering and Computer Science
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In this paper, the advantage of the dynamic behavior of generators is considered by incorporating dynamic models for generators. ...
Moreover, the traditional L-index is augmented by incorporating real-time and synchronized phasor data collected from the optimally located phasor measurement units (PMU) in a wide-area measurement system ...
The time-varying impedances and internal voltages derived from synchrophasor measurements are directly used to integrate dynamic performance of generators. ...
doi:10.11591/ijeecs.v23.i3.pp1340-1349
fatcat:7aog5eacp5cfjnocr65qhuhesi
Applying a Formula for Generator Redispatch to Damp Interarea Oscillations Using Synchrophasors
2016
IEEE Transactions on Power Systems
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The formula requires some dynamic power system data and we show how to obtain that data from synchrophasor measurements. ...
We explain and apply a new analytic formula for the modal sensitivity to rank the best pairs of generators to redispatch. ...
the state estimator.
3) is computed from measurements. 4) Coefficients and in (6) are computed from (8) and (9).
5) is computed from , , . ...
doi:10.1109/tpwrs.2015.2485519
fatcat:2k3k2ryq2bbaddqcswq7pa5pde
Two Vision-guided vehicles: temporal coordination using nonlinear dynamical systems
2007
Engineering of Complex Computer Systems (ICECCS), Proceedings of the IEEE International Conference on
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The generated trajectories have controlled and stable timing (limit cycle type solutions). Incoupling of sensory information enables sensor driven termination of movement. ...
We build on a previously proposed solution in which timed trajectories and sequences of movements were generated as attractor solutions of dynamic systems. ...
The rotation speeds of both wheels are computed from the angular velocity, w, and the path velocity, v of the robot. The former is obtained from the dynamics of heading direction. ...
doi:10.1109/robot.2007.363758
dblp:conf/icra/SantosF07
fatcat:x4aft5sqtjfuresl46nl3ceg6y
CellRank for directed single-cell fate mapping
[article]
2020
bioRxiv
pre-print
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Computational trajectory inference enables the reconstruction of cell-state dynamics from single-cell RNA sequencing experiments. ...
Our approach combines the robustness of trajectory inference with directional information from RNA velocity, derived from ratios of spliced to unspliced reads. ...
Walzthoeni (Bioinformatics Core Facility, Institute of Computational Biology, Helmholtz Zentrum München) for bioinformatics support. We would further like to thank M. Weber for valuable ...
doi:10.1101/2020.10.19.345983
fatcat:zqtjfglgvjgddahsulxgvgxyfi
Toward bio-inspired information processing with networks of nano-scale switching elements
[article]
2013
arXiv
pre-print
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In reservoir computing, the non-linear network acts as a dynamical system mixing and spreading the input signals over a large state space, and only a readout layer is trained. ...
We review some work investigating the functionalities of locally connected networks of different types of switching elements as computational substrates. ...
Acknowledgements: This work has been supported by the EU project FP7-318597 SYMONE and by Chalmers University of Technology. ...
arXiv:1311.6259v1
fatcat:cxtutgpz7rh5tmsvldd3bkr4n4
Dynamic State Estimator Based on Wide Area Measurement System During Power System Electromechanical Transient Process
[chapter]
2012
Advanced Topics in Measurements
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measured by PMU synchronistically (direct measurement or inferred by generator terminal electrical variables). ...
Thereby, these generators can not adopt the direct measurement mode and have to infer the rotor angle using the generator terminal electrical variables measured by PMU. ...
.), ISBN: 978-953-51-0128-4, InTech, Available from: http://www.intechopen.com/books/advanced-topics-in-measurements/dynamic-state-estimator-based-on-widearea-measurement-system-during-power-system-electromechanical ...
doi:10.5772/37574
fatcat:6mv53lbfufbyrg3thrdwantwni
Weak nanoscale chaos and anomalous relaxation in DNA
2017
Physical review. E
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It is found that the intensity of breathing dynamics is strongly increased in the internal base pairs that flank the photoprobe, with anomalous relaxation quantitatively close to that in terminal base ...
It is concluded that the algebraic relaxation observed experimentally is very likely a manifestation of weakly chaotic dynamics of hydrogen-bond breathing in the base pairs stacked to the photoprobe, and ...
Besides, dynamics of internal base pairs is strongly restricted and its parameters can differ from those we obtained for terminal bases [7] . ...
doi:10.1103/physreve.95.062417
pmid:28709320
fatcat:izaabk7hk5htbndyctzhje4hnm
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