Virgil Dumbravă
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View article: Scenario analysis for smart microgrids towards a holistic decarbonization of energy systems by using local energy sources
Scenario analysis for smart microgrids towards a holistic decarbonization of energy systems by using local energy sources Open
View article: A novel hybrid Teaching-Learning-Based optimization and Reduced-Form approach for efficient parameter extraction and accurate prediction of photovoltaic module performance
A novel hybrid Teaching-Learning-Based optimization and Reduced-Form approach for efficient parameter extraction and accurate prediction of photovoltaic module performance Open
View article: Physical Characterization of Ecological Briquettes Based on Vertisols and Sorghum Bicolor CS54 Fibers
Physical Characterization of Ecological Briquettes Based on Vertisols and Sorghum Bicolor CS54 Fibers Open
The aim of this work is to perform the physical characterization of ecological briquettes based on vertisols and fibers of Sorghum bicolor CS54 from the city of Maroua located in the Far North of Cameroon, a country of Sub-Saharan Africa. …
View article: Analysis of urban network operation in presence of renewable sources for decarbonization of energy system
Analysis of urban network operation in presence of renewable sources for decarbonization of energy system Open
In order to decarbonize the energy system, it is necessary to change all aspects of the production, transport and consumption of electricity chain. The European Union (EU) aims to become the first climate-neutral continent by 2050. To deli…
View article: Multi Criteria Frameworks Using New Meta-Heuristic Optimization Techniques for Solving Multi-Objective Optimal Power Flow Problems
Multi Criteria Frameworks Using New Meta-Heuristic Optimization Techniques for Solving Multi-Objective Optimal Power Flow Problems Open
This article develops two metaheuristics optimization techniques, Grey Wolf Optimizer (GWO) and Harris Hawks Optimization (HHO), to handle multi-objective optimal power flow (MOOPF) issues. Multi Objective GWO (MOGWO) and Multi Objective H…
View article: Analysis of the Electricity Network and of the Users of Some Distribution Areas in Romania in Order to Be Able to Achieve Sustainability and Flexibility of Energy Systems
Analysis of the Electricity Network and of the Users of Some Distribution Areas in Romania in Order to Be Able to Achieve Sustainability and Flexibility of Energy Systems Open
View article: A Comparative-Analysis-Based Multi-Criteria Assessment of On/Off-Grid-Connected Renewable Energy Systems: A Case Study
A Comparative-Analysis-Based Multi-Criteria Assessment of On/Off-Grid-Connected Renewable Energy Systems: A Case Study Open
Different configurations of on/off-grid-connected hybrid renewable energy systems (HRESs) are analyzed and compared in the present research study for optimal decision making in Sub-Saharan Africa, facing the problems of electricity deficit…
View article: Single and Multi-Objective Optimal Power Flow Based on Hunger Games Search with Pareto Concept Optimization
Single and Multi-Objective Optimal Power Flow Based on Hunger Games Search with Pareto Concept Optimization Open
In this study, a new meta-heuristic optimization method inspired by the behavioral choices of animals and hunger-driven activities, called hunger games search (HGS), is suggested to solve and formulate the single- and multi-objective optim…
View article: A Slime Mould Algorithm Programming for Solving Single and Multi-Objective Optimal Power Flow Problems with Pareto Front Approach: A Case Study of the Iraqi Super Grid High Voltage
A Slime Mould Algorithm Programming for Solving Single and Multi-Objective Optimal Power Flow Problems with Pareto Front Approach: A Case Study of the Iraqi Super Grid High Voltage Open
Optimal power flow (OPF) represents one of the most important issues in the electrical power system for energy management, planning, and operation via finding optimal control variables with satisfying the equality and inequality constraint…
View article: Simulation and Optimization of a Wind Energy System in the Adrar Region
Simulation and Optimization of a Wind Energy System in the Adrar Region Open
The production of Electrical energy from so-called renewable sources in general and wind energy in particular, continues to increase and becomes more and more significant. Currently, the problem is not just how much energy is produced from…
View article: Double-objective optimization-based firefly algorithm of a stand-alone photovoltaic/water pumping system for water supply in rural and remote areas: a case study
Double-objective optimization-based firefly algorithm of a stand-alone photovoltaic/water pumping system for water supply in rural and remote areas: a case study Open
View article: A Solution to the Problem of Electrical Load Shedding Using Hybrid PV/Battery/Grid-Connected System: The Case of Households’ Energy Supply of the Northern Part of Cameroon
A Solution to the Problem of Electrical Load Shedding Using Hybrid PV/Battery/Grid-Connected System: The Case of Households’ Energy Supply of the Northern Part of Cameroon Open
A techno-economic study of a hybrid PV/Battery/Grid-connected system for energy supply is carried out in this paper to respond to the problem of electrical load shedding. An optimal design of the system is realized thanks to a double-objec…
View article: Smart Cities - The Optimization of their Development
Smart Cities - The Optimization of their Development Open
International audience
View article: Integration of renewable energy sources using generation expansion planning
Integration of renewable energy sources using generation expansion planning Open
Generation expansion planning (GEP) problem is required for maintaining the system reliability and ensuring demand supply. GEP is usually determined by the infrastructure aging and growth of demand. This paper describes a perspective of th…
View article: Stochastic programming approach for TEP optimization considering RES integration in electricity market
Stochastic programming approach for TEP optimization considering RES integration in electricity market Open
Transmission expansion planning (TEP) is helping the system operator to decide the optimal solution for building new lines and in the same time to increase the reliability and safety of the existing power system. The proposed problem is a …
View article: A hybrid system implementation for residential cluster
A hybrid system implementation for residential cluster Open
In the current situation, when conventional energy based on fossil fuel combustion are polluting and time-limited, there is an increasing emphasis on the exploitation of non-polluting renewable sources. At both global and European levels, …
View article: Demand response power system optimization in presence of renewable energy sources
Demand response power system optimization in presence of renewable energy sources Open
This paper optimizes the price-based demand response of a large customer in a power system with stochastic production and classical fuel-supplied power plants. The implemented method of optimization, under uncertainty, is helpful to model …
View article: PHOTOVOLTAIC PRODUCTION MANAGEMENT IN STOCHASTIC OPTIMIZED MICROGRIDS
PHOTOVOLTAIC PRODUCTION MANAGEMENT IN STOCHASTIC OPTIMIZED MICROGRIDS Open
The microgrids are composed of small scale fueled generation capacities, renewable energy sources, storage energy systems, controllable loads, and autonomously can connect or disconnect from the mains supply. The microgrids can operate con…
View article: Stochastic Optimization of Power System Operation in Presence of Renewable Energy Sources
Stochastic Optimization of Power System Operation in Presence of Renewable Energy Sources Open
The liberalization process of the energy market structure determined significant changes in the electric utility industry, from both generating and transmission perspectives, and new generation technologies emerged, deeply influencing the …