Listar por tema "Direct current networks"
Mostrando ítems 1-16 de 16
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A convex OPF approximation for selecting the best candidate nodes for optimal location of power sources on DC resistive networks
(Elsevier B.V., 2019)This paper proposes a convex approximation approach for solving the optimal power flow (OPF) problem in direct current (DC) networks with constant power loads by using a sequential quadratic programming approach. A ... -
A mixed-integer nonlinear programming model for optimal reconfiguration of DC distribution feeders
(Cartagena de Indias, 2020-08-27)This paper deals with the optimal reconfiguration problem of DC distribution networks by proposing a new mixed-integer nonlinear programming (MINLP) formulation. This MINLP model focuses on minimising the power losses in ... -
A New Iterative Power Flow Method for AC Distribution Grids with Radial and Mesh Topologies
(Cartagena de Indias, 2020-11-25)This brief discusses the classical problem of power flow analysis in alternating current (ac) distribution networks through Taylor series expansion. The main advantage of this approach is that it can work with radial and ... -
An energy management system for optimal operation of BSS in DC distributed generation environments based on a parallel PSO algorithm
(Cartagena de IndiasCampus Tecnológico, 2020-06-16)This paper proposes an energy management system (EMS) for the day-ahead dispatch of battery storage systems (BSS) under a distributed generation environment for direct current (DC) networks, with the main objective of ... -
Hybrid ga-socp approach for placement and sizing of distributed generators in DC networks
(Cartagena de Indias, 2020-12-02)This research addresses the problem of the optimal location and sizing distributed generators (DGs) in direct current (DC) distribution networks from the combinatorial optimization. It is proposed a master–slave optimization ... -
On the convergence of the power flow methods for DC networks with mesh and radial structures
(Cartagena de Indias, 2021-02)The convergence analysis of the power flow methodologies for direct current (dc) electrical networks is addressed in this paper. The Banach fixed-point theorem is employed to prove the convergence and uniqueness in the ... -
On the efficiency in electrical networks with ac and dc operation technologies: A comparative study at the distribution stage
(Cartagena de Indias, 2020-08-20)This research deals with the efficiency comparison between AC and DC distribution networks that can provide electricity to rural and urban areas from the point of view of grid energy losses and greenhouse gas emissions ... -
On the mathematical modeling for optimal selecting of calibers of conductors in DC radial distribution networks: An MINLP approach
(Cartagena de Indias, 2021-01-29)This paper addresses the problem of optimal conductor selection in direct current (DC) distribution networks with radial topology. A nonlinear mixed-integer programming model (MINLP) is developed through a branch-to-node ... -
Optimal Location and Sizing of DGs in DC Networks Using a Hybrid Methodology Based on the PPBIL Algorithm and the VSA
(Cartagena de Indias, 2021-08-11)In this paper, we propose a master–slave methodology to address the problem of optimal integration (location and sizing) of Distributed Generators (DGs) in Direct Current (DC) networks. This proposed methodology employs a ... -
Optimal location and sizing of PV sources in DC networks for minimizing greenhouse emissions in diesel generators
(Cartagena de Indias, 2020-02-24)This paper addresses the problem of the optimal location and sizing of photovoltaic (PV) sources in direct current (DC) electrical networks considering time-varying load and renewable generation curves. To represent this ... -
Optimal Operation of PV Sources in DC Grids for Improving Technical, Economical, and Environmental Conditions by Using Vortex Search Algorithm and a Matrix Hourly Power Flow
(Cartagena de IndiasCampus Tecnológico, 2022-12-26)This document presents a master–slave methodology for solving the problem of optimal operation of photovoltaic (PV) distributed generators (DGs) in direct current (DC) networks. This problem was modeled using a nonlinear ... -
Recursive convex approximations for optimal power flow solution in direct current networks
(Cartagena de Indias, 2022-08-12)The optimal power flow problem in direct current (DC) networks considering dispersal generation is addressed in this paper from the recursive programming point of view. The nonlinear programming model is transformed into ... -
Relaxed convex model for optimal location and sizing of DGs in DC grids using sequential quadratic programming and random hyperplane approaches
(Elsevier Ltd, 2020)This report addresses the problem of optimal location and sizing of constant power sources (distributed generators (DGs)) in direct current (DC) networks for improving network performance in terms of voltage profiles and ... -
Second-order cone approximation for voltage stability analysis in direct-current networks
(Cartagena de Indias, 2020-09-24)In this study, the voltage stability margin for direct current (DC) networks in the presence of constant power loads is analyzed using a proposed convex mathematical reformulation. This convex model is developed by employing ... -
Voltage stability margin in DC grids with CPLs: A recursive Newton-raphson approximation
(Cartagena de Indias, 2019-03-11)This express brief addresses the voltage collapse problem in direct-current (dc) networks by using a recursive heuristic search algorithm based on the Newton-Raphson method. The determinant of the Jacobian matrix in the ... -
Vortex Search Algorithm for Optimal Power Flow Analysis in DC Resistive Networks With CPLs
(Cartagena de Indias, 2019-08-30)This express brief addresses the optimal power flow (OPF) analysis in direct-current (DC) resistive networks with constant power loads (CPLs). The OPF employs the vortex search algorithm (VSA) in conjunction with a power ...
Universidad Tecnológica de Bolívar - 2017 Institución de Educación Superior sujeta a inspección y vigilancia por el Ministerio de Educación Nacional. Resolución No 961 del 26 de octubre de 1970 a través de la cual la Gobernación de Bolívar otorga la Personería Jurídica a la Universidad Tecnológica de Bolívar.