Juan Andrés Martín García

Universidad de Cádiz | UCA

This chapter focuses on the harmonics emissions and power system grid resilience in electric vehicle (EV) charging. With the increasing demand for EVs, understanding the effects of harmonics on grid stability is critical. Converters in EV charging operations can contribute to high harmonics levels, causing disturbances and stressing the power syste...

In this article, a new multiobjective algorithm is proposed for determining the optimal sizing and allocation of the photovoltaic (PV) systems in radial distribution systems. A Jaya algorithm is modified to find the optimal PV capacities for limited bus locations at the network. The proposed algorithm showed better performance against known techniq...

In a stand-alone renewables energy system (SRES), maintaining the balance of power between supply and demand with minimum cost in homes connected to these systems present one of the most important challenges to consider. In SRES, a large capacity of batteries is usually used to store the energy and reuse it when the absence or insufficient power su...

In a stand-alone renewables energy system (SRES), maintaining the balance of power between supply and demand with minimum cost in homes connected to these systems present one of the most important challenges to consider. In SRES, a large capacity of batteries is usually used to store the energy and reuse it when the absence or insufficient power su...

In a stand-alone renewables energy system (SRES), maintaining the balance of power between supply and demand with minimum cost in homes connected to these systems present one of the most important challenges to consider. In SRES, a large capacity of batteries is usually used to store the energy and reuse it when the absence or insufficient power su...

This paper presents a new experimental method that allows estimating on real time, the slope at a generic point of the curve of a photovoltaic generator. The slop is obtained by means of centered differentiation method, but it’s taken into account that the solar irradiation could change along readings process, for that reason the method is improved...

The sequential estimation of surface heat flux from discrete and noisy data of surface temperature is an ill-posed problem. From Duhamel's theorem, Fourier's law and using a stabilization technique based on the Sequential application of the Ordinary Least Squares (SOLS), we obtain a relatively simple but effective method. As SOLS method uses a leas...

This paper deals with the subject of finding the site and size of distributed generation in distribution systems. This problem corresponds to a mixed-integer nonlinear problem which is difficult and hard to solve with classical optimization techniques. Many approaches and with different objective functions have been applied to solve it. In this pap...

Power flow calculation is the most used procedure in electrical power systems. Generally, most of optimization problems in electric power systems need a steady state analysis to evaluate the objective function. Especially, those optimization problems that make use of artificial intelligence techniques, where, due to the high number of iterations, t...

In this paper, a method which employs a Modified Teaching–Learning Based Optimization (MTLBO) algorithm is proposed to determine the optimal placement and size of Distributed Generation (DG) units in distribution systems. For the sake of clarity, and without loss of generality, the objective function considered is to minimize total electrical power...

This paper presents a meshed algorithm for optimal reconfiguration of distribution systems. In the reconfiguration problem, the final objective is to reach a radial network that optimizes some function like the network losses. Many algorithms start from a radial network where a switch closure is complemented by opening of another switch to ensure a...

This short communication is a discussion of the paper entitled “A new heuristic approach for optimal reconfiguration in distribution systems” introduced a new approach for optimal reconfiguration of radial distribution systems. Besides, a load flow algorithm based on graph theory was presented in order to give precise branch currents, node voltages...

In this paper an efficient sequential method is developed in order to estimate the unknown boundary condition on the surface of a body from transient temperature measurements inside the solid. This numerical approach for solving an inverse heat conduction problem (IHCP) takes into account two-dimensional problems, planar or axisymmetric cylindrical...

This paper presents a new approach to solve the reconfiguration problem by a switching operation in order to reduce the power loss of distribution systems. By using the proposed heuristic technique, based on the direction of the branch power flows, a better network configuration is obtained. This reconfiguration algorithm starts with a radial topol...

Sequential methods that use future times in order to solve an inverse heat conduction problem can be re-formulated as a sequential digital filter algorithm. The aim of this paper is to explore the filter effect of the function specification method and the truncated singular value decomposition method, in a sequential form. For this purpose, the pow...

This paper examines numerically and theoretically the application of truncated Singular Value Decomposition (SVD) in a sequential form. The Sequential SVD algorithm presents two tunable hyperparameters: the number of future temperature (r) and the rank of the truncated sensitivity matrix (p). The regularization effect of both hyperparameters is con...