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Miguel Aybar-Mejía, Randy Andrés, Alam Cabral-Soto, Carlos Montás, Wilmer-Johann Núñez-García, Elvin Arnaldo Jiménez Matos, Giuseppe Sbriz-Zeitun and Deyslen Mariano-Hernández
The growing integration of tourist areas and complexes increases the demand for electrical power systems. This increased demand may represent a vulnerability to voltage and frequency stability in electrical grids, where these parameters are essential for...
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Martin M. Sánchez-Mora, David Lionel Bernal-Romero, Oscar Danilo Montoya, Walter M. Villa-Acevedo and Jesús M. López-Lezama
The Optimal Reactive Power Dispatch (ORPD) problem consists of finding the optimal settings of reactive power resources within a network, usually with the aim of minimizing active power losses. The ORPD is a nonlinear and nonconvex optimization problem t...
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Brayan Enrique Aguirre-Angulo, Lady Carolina Giraldo-Bello, Oscar Danilo Montoya and Francisco David Moya
This study addresses the problem of the maximization of the voltage stability index (λ" role="presentation">???
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-coefficient) in medium-voltage distribution networks considering the optimal placement and sizing of dispersed generators. The pr...
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David Lionel Bernal-Romero, Oscar Danilo Montoya and Andres Arias-Londoño
The problem of the optimal reactive power flow in transmission systems is addressed in this research from the point of view of combinatorial optimization. A discrete-continuous version of the Chu & Beasley genetic algorithm (CBGA) is proposed to mode...
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Daniel Alcala-Gonzalez, Eva Maria García del Toro, María Isabel Más-López and Santiago Pindado
The increase in the installation of renewable energy sources in electrical systems has changed the power distribution networks, and a new scenario regarding protection devices has arisen. Distributed generation (DG) might produce artificial delays regard...
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Osmel Pérez Baluja,Orlys Ernesto Torres Breffe,Rolando Pérez Hermoso
En este artículo, se realiza un estudio de los principales errores que introduce la inducción mutua de secuencia cero en el trabajo de las protecciones de sobrecorriente direccional y distancia de tierra respectivamente (67N y 21N), cuando estas se encue...
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Hatice OkumuÅ?, Fatih Mehmet NUROGLU
As the importance of protection in power systems increase, knowing the type of malfunction occurring in the system has become crucial. Especially in the distribution system where electricity is delivered to the consumer, detecting the right fault type wi...
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F. Roos; R.C. Bansal
This study reports on a case study in Grootegeluk Mine: Exxaro Coal, Lephalale, South Africa, in terms of power factor correction (PFC), load flow, harmonic frequency scans and harmonic voltage distortion analyses. The DIgSilent PowerFactory software was...
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Hamdy M. Sultan, Ahmed A. Zaki Diab, Oleg N. Kuznetsov, Ziad M. Ali and Omer Abdalla
In this paper, the impact of integrating photovoltaic plants (PVPs) with high penetration levels into the national utility grid of Egypt is demonstrated. Load flow analysis is used to examine the grid capacity in the case of integrating the desired PVPs ...
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In this paper, an improved smart meter data-based three-stage algorithm to calculate the power/energy losses in three-phase networks with the voltage level below 0.4 kV (low voltage—LV) is presented. In the first stage, the input data regarding the...
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