Prony analysis and Robust RLS for electromechanical oscillations: an evaluation technique

2018 ◽  
Author(s):  
S. Føyen ◽  
M.-E. Kvammen ◽  
O.B. Fosso
Keyword(s):  
Evaluation Technique ◽  
Electromechanical Oscillations ◽  
Prony Analysis

Évaluation technique, économique et environnementale de procédés de traitement complémentaire avancés pour l’élimination des micropolluants

2015 ◽  
pp. 67-83 ◽  
Author(s):  
S. Besnault ◽  
S. Martin-Ruel ◽  
S. Baig ◽  
B. Heiniger ◽  
M. Esperanza ◽  
...  
Keyword(s):  
Evaluation Technique

Effects of contact gap on nondestructive evaluation using magnetic measurement for ferromagnetic steel

2020 ◽  
Vol 64 (1-4) ◽  
pp. 969-975
Author(s):  
Hiroaki Kikuchi ◽  
Yuki Sato
Keyword(s):  
Magnetic Flux ◽  
Nondestructive Evaluation ◽  
Effective Permeability ◽  
Magnetic Circuit ◽  
Magnetic Measurement ◽  
Air Gap ◽  
Motive Force ◽  
Hysteresis Curve ◽  
Evaluation Technique ◽  
Ferromagnetic Steel

We investigated effects of contact gap on magnetic nondestructive evaluation technique using a magnetic single-yoke probe. Firstly, we evaluated hysteresis curves and impedance related to permeability of the material measured by a single-yoke probe, when an air gap length between the probe and specimens changes. The hysteresis curve gradually inclines to the axis of the magneto-motive force and magneto-motive force at which the magnetic flux is 0 decreases with increasing the gap length. The effective permeability also decreases with increasing the gap thickness. The incremental of gap thickness increases the reluctance inside the magnetic circuit composed of the yoke, specimen and gap, which results in the reduction of flux applying to specimen.

A standardized finite element evaluation technique

1982 ◽  
Author(s):  
J. DOW ◽  
T. HO ◽  
S. TAUGBOL
Keyword(s):  
Finite Element ◽  
Evaluation Technique

Application of partial eigenvalue assignment techniques to dampen electromechanical oscillations in multi-machine power systems

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Erick Baleeiro da Silva ◽  
José Mário Araújo
Keyword(s):  
Power Systems ◽  
The Other ◽  
Mode Shapes ◽  
Eigenstructure Assignment ◽  
Power System Stabilizers ◽  
Control Effort ◽  
Electromechanical Oscillations ◽  
Oscillation Modes ◽  
Partial Controllability

AbstractIn this study, a methodology for partial eigenstructure assignment (PEVA) is applied to dampen electromechanical oscillations in electrical multi-machine power systems. The approach is anchored in allocating a small number of undesirable eigenvalues, for example, which are poorly damped, preserving the other eigenvalues in the system - the so-called no-spillover spectrum. The new position of the selected eigenvalues is carried out based on the partial controllability analysis of the system, in order to minimize the control effort. Simulation examples using a system with 68 buses, 16 generators and five areas showed that the presented methodology is efficient in dampening the local and inter-area oscillation modes when compared to the classic power system stabilizers (PSS). The quality of the solution is illustrated through computer simulations, eigenvalues tables and mode-shapes.

Multistage Bayesian Fusion Evaluation Technique Endorsing Immersive Virtual Maintenance

Measurement ◽  
2021 ◽  
pp. 109344
Author(s):  
Ge Zhexue ◽  
Qi Zhuqi ◽  
Luo Xu ◽  
Yang Yongmin ◽  
Zhang Yi
Keyword(s):  
Evaluation Technique ◽  
Bayesian Fusion ◽  
Virtual Maintenance
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