scholarly journals Control Strategy of Hybrid AC/DC Microgrid in Standalone Mode

2020 ◽  
Vol 9 (2) ◽  
pp. 295-301
Author(s):  
Nabil Qachchachi ◽  
Hassane Mahmoudi ◽  
Abdennebi El Hassnaoui
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Residential Buildings ◽  
Storage System ◽  
Energy Resources ◽  
Mixed Integer ◽  
Renewable Energy Resources ◽  
Dc Microgrid ◽  
Power System Control ◽  
Time Operation

The fluctuation of production of renewable energy resources (RESs) is a big problem for its installation and integration in isolated residential buildings. A hybrid AC/DC microgrid facilitates the good operation of RESs with a storage system in standalone mode and the possibilities of smart energy management. In this paper optimization research of the hybrid ac/dc microgrid in isolated mode of operation is presented. The power system is supplied by various Renewable Energy Resources (RESs), Photovoltaic arrays (PVA), a Wind Turbine Generator (WTG), Diesel Generator (DG) and supported by Batteries Storage System (BSS) for short term storage. The main objective of this study is to optimize power flow within a hybrid ac/dc microgrid with regards to reliability in islanded mode. First a mathematical model optimized by mixed integer linear programming and solved by CPLEX solver with JAVA language is developed for an islanded RES system and then, based on the developed model, the power system control is simulated for different cases of off-grid mode. Simulation results have shown that the management strategy can maintain power balancing while performing optimized control and give a controllable loads and batteries charging/discharging powers, even with unpredictability of RESs powers outputs and arbitrary energy tariffs. Finally, the proposed algorithm respects the optimization in real-time operation under various constraints.%.©2020. CBIORE-IJRED. All rights reserved

scholarly journals Optimization of Hybrid AC/DC Microgrid in Grid-Connected Mode

2020 ◽  
Vol 9 (4) ◽  
pp. 209-214
Keyword(s):  
Renewable Energy ◽  
Real Time ◽  
Hybrid Control ◽  
Storage System ◽  
Operating Cost ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Dc Microgrid ◽  
Time Operation ◽  
Utility Grid

The instability of the production of renewable energy resources (RESs) is a major problem for its installation and integration with the utility grid. A hybrid AC/DC microgrid facilitates the good operation of RESs with a storage system in grid-tied mode and the possibilities of smart energy management. The present work is being carried out on smart control strategy for a hybrid AC/DC microgrid (HMG). This paper deals with a real-time Hybrid control system (HCS) for a grid-connected HMG where the supervisory control based totally on fixing an optimization hassle objectives to minimize operating cost with the maximum usage of renewable resources, minimum usage of the utility grid, extending energy storage systems (ESS) lifetime. The power references for renewable energy resources (RESs) are scheduled by the use of CPLEX solver which uses as input strength measurement, archived facts and stored climate forecast statistics previously measured regarding the modern status. The experimental study verifies well the supervision methodology; thus, the proposed algorithm respects the optimization in real-time operation under different constraints.

scholarly journals A New Coordinated Control of Hybrid Microgrids with Renewable Energy Resources Under Variable Loads and Generation Conditions

2020 ◽  
Vol 16 (2) ◽  
pp. 1-20 ◽  
Author(s):  
Bilal Alhasnawi ◽  
Basil Jasim
Keyword(s):  
Renewable Energy ◽  
Power Systems ◽  
Residential Buildings ◽  
Renewable Energy Sources ◽  
Coordinated Control ◽  
Maximum Power ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Dc Microgrid ◽  
Hybrid Microgrid

The hybrid AC/DC microgrid is considered to be more and more popular in power systems as increasing loads. In this study, it is presented that the hybrid AC/DC microgrid is modeled with some renewable energy sources (e.g. solar energy, wind energy) in the residential of the consumer in order to meet the demand. The power generation and consumption are undergoing a major transformation. One of the tendencies is to integrate microgridsinto the distribution network with high penetration ofrenewable energy resources. In this paper, a new distributed coordinated control is proposed for hybrid microgrid, which could apply to both grid-connected mode and islanded mode with hybrid energy resources and variable loads. The proposed system permits coordinated operation of distributed energy resources to concede necessary active power and additional service whenever required. Also, the maximum power point tracking technique is applied to both photovoltaic stations and wind turbines to extract the maximum power from the hybrid power system during the variation of the environmental conditions. Finally, a simulation model is built with a photovoltaic, wind turbine, hybrid microgrid as the paradigm, which can be applied to different scenarios, such as small-sized commercial and residential buildings. The simulation results have verified the effectiveness and feasibility of the introduced strategy for a hybrid microgrid operating in different modes.

scholarly journals Potential utilization of renewable energy resources for electricity generation in Bosnia and Herzegovina

2005 ◽  
Vol 9 (3) ◽  
pp. 15-23 ◽  
Author(s):  
Fajik Begic ◽  
Anes Kazagic
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Bosnia And Herzegovina ◽  
Electricity Market ◽  
Renewable Resources ◽  
Electricity Generation ◽  
Power Plants ◽  
Energy Resources ◽  
Energy Utilization ◽  
Renewable Energy Resources

Along with the current processes of restructuring of Energy power system of Bosnia and Herzegovina, liberalization of the electricity market, and modernization of the existing power plants, Bosnia and Herzegovina must turn to the utilization of renewable resources in reason able dynamics as well. Respecting this policy, the initial Valuation of the potential of renewable erg resources in Bosnia and Herzegovina is per formed. The methodology of evaluation of wind energy utilization is presented in this paper, as well as some other aspects of utilization of the renewable energy resources in Bosnia and Herzegovina. Implementation of selected projects should improve sustainability of energy power production in Bosnia and Herzegovina, by reducing the total emission of carbon dioxide originated from energy power system of Bosnia and Herzegovina.

scholarly journals Paper Modeling of Wind-Solar Hybrid Power System for Off-Grid in Nepal and a Case Study

2020 ◽  
Vol 15 (3) ◽  
pp. 360-367
Author(s):  
Khagendra Bahadur Thapa ◽  
Arbin Maharjan ◽  
Kishor Kaphle ◽  
Kishor Joshi ◽  
Tara Aryal
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Hybrid System ◽  
Alternative Energy ◽  
Storage System ◽  
Renewable Energy Resources ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Efficiency And Effectiveness

The adaptation of renewable energy has been increasing in a very encouraging way all over the world. Among various renewable energy resources, wind and solar energy are the promising sources of alternative energy. Wind and solar photovoltaic (PV) have been employed in parallel as a hybrid system for better electricity service. This paper presents a case study and modeling of wind-solar hybrid system in Hriharpur Gadi village, Sindhuli District, Nepal. The hybrid system yields 110kWh of energy per day meeting the village’s electricity demand of 87 kWh per day. Moreover, the hybrid power system with battery storage system is modeled using MATLAB simulator. Further, improvising in the existing modeling has been presented to enhance the efficiency and effectiveness of the system.

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