Results 11 to 20 of about 139,956 (216)

Optimal Location and Sizing of PV Generation Units in Electrical Networks to Reduce the Total Annual Operating Costs: An Application of the Crow Search Algorithm

Mathematics, 2022
This study presents a master–slave methodology to solve the problem of optimally locating and sizing photovoltaic (PV) generation units in electrical networks.
Brandon Cortés-Caicedo, Luis Fernando Grisales-Noreña, Oscar Danilo Montoya, Miguel-Angel Perea-Moreno, Alberto-Jesus Perea-Moreno   +4 more
doaj   +1 more source

Annual Operating Costs Minimization in Electrical Distribution Networks via the Optimal Selection and Location of Fixed-Step Capacitor Banks Using a Hybrid Mathematical Formulation

Mathematics, 2022
The minimization of annual operating costs in radial distribution networks with the optimal selection and siting of fixed-step capacitor banks is addressed in this research by means of a two-stage optimization approach.
Oscar Danilo Montoya, Francisco David Moya, Arul Rajagopalan   +2 more
doaj   +1 more source

Efficient Reduction in the Annual Investment Costs in AC Distribution Networks via Optimal Integration of Solar PV Sources Using the Newton Metaheuristic Algorithm

Applied Sciences, 2021
This research addresses the problem of the optimal placement and sizing of (PV) sources in medium voltage distribution grids through the application of the recently developed Newton metaheuristic optimization algorithm (NMA).
Oscar Danilo Montoya, Luis Fernando Grisales-Noreña, Lázaro Alvarado-Barrios, Andres Arias-Londoño, Cesar Álvarez-Arroyo   +4 more
doaj   +1 more source

Optimal Integration of Dispersed Generation in Medium-Voltage Distribution Networks for Voltage Stability Enhancement

Algorithms, 2022
This study addresses the problem of the maximization of the voltage stability index (λ-coefficient) in medium-voltage distribution networks considering the optimal placement and sizing of dispersed generators.
Brayan Enrique Aguirre-Angulo, Lady Carolina Giraldo-Bello, Oscar Danilo Montoya, Francisco David Moya   +3 more
doaj   +1 more source

Interval optimal power flow applied to distribution networks under uncertainty of loads and renewable resources

Journal of Modern Power Systems and Clean Energy, 2018
Optimal power flow (OPF) has been used for energy dispatching in active distribution networks. To satisfy constraints fully and achieve strict operational bounds under the uncertainties from loads and sources, this paper derives an interval optimal power
Pengwei CHEN, Xiangning XIAO, Xuhui WANG
doaj   +1 more source

A dynamic convergence control scheme for the solution of the radial equilibrium equation in through-flow analyses [PDF]

, 2010
One of the most frequently encountered numerical problems in scientific analyses is the solution of non-linear equations. Often the analysis of complex phenomena falls beyond the range of applicability of the numerical methods available in the public ...
Kotsiopoulos, P., Pachidis, Vassilios, Pilidis, Pericles, Templalexis, I.   +3 more
core   +1 more source

Noise shaping Asynchronous SAR ADC based time to digital converter [PDF]

, 2018
Time-to-digital converters (TDCs) are key elements for the digitization of timing information in modern mixed-signal circuits such as digital PLLs, DLLs, ADCs, and on-chip jitter-monitoring circuits.
Katragadda, Sowmya
core   +1 more source

Influence of Non-linear Boussinesq Approximation on Natural Convective Flow of a Power-Law Fluid along an Inclined Plate under Convective Thermal Boundary Condition

Nonlinear Engineering, 2019
In the present investigation, a problem of natural convective flow of a non-Newtonian power-law fluid over an inclined plate saturated in a non-Darcy porous medium is considered.
RamReddy Ch., Naveen P., Srinivasacharya D.   +2 more
doaj   +1 more source

Avalanche statistics and time-resolved grain dynamics for a driven heap [PDF]

, 2007
We probe the dynamics of intermittent avalanches caused by steady addition of grains to a quasi-two dimensional heap. To characterize the time-dependent average avalanche flow speed v(t), we image the top free surface.
A. R. Abate, D. A. Weitz, D. J. Durian, D. V. Khakhar, G. D. R. MiDi, G. Maret, H. Katsuragi, J. Duran, R. J. Adrian   +8 more
core   +4 more sources

The Deflection of the Two Interacting Coronal Mass Ejections of 2010 May 23-24 as Revealed by Combined In situ Measurements and Heliospheric Imaging [PDF]

, 2012
In 2010 May 23-24, SDO observed the launch of two successive coronal mass ejections (CMEs), which were subsequently tracked by the SECCHI suite onboard STEREO.
Davies, J. A., Davis, C. J., Farrugia, C. J., Lugaz, N., Möstl, C., Roussev, I. I., Temmer, M.   +6 more
core   +1 more source