Optimum islanded microgrid reconfiguration based on maximization of system loadability and minimization of power losses

Hemmatpour, Mohammad Hasan; Mohammadian, Mohsen; Gharaveisi, Ali Akbar

doi:10.1016/j.ijepes.2015.11.040

Cited by 51 publications

(36 citation statements)

References 26 publications

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“…Islanded mode of microgrid usually occurs after a fault in the main grid; hence, microgrid must be disconnected and work independently. If another fault happens in the microgrid during islanded mode operation, control actions must be taken inside the microgrid including changes in topology and load/generation shedding, generally known as reconfiguration . Reconfiguration process must be done as quickly as possible, preferably RT to reduce the effects of a fault in the microgrid.…”

Section: Overview Of Microgrid Operation Modesmentioning

confidence: 99%

“…If another fault happens in the microgrid during islanded mode operation, control actions must be taken inside the microgrid including changes in topology and load/generation shedding, generally known as reconfiguration. 43,44 Reconfiguration process must be done as quickly as possible, preferably RT to reduce the effects of a fault in the microgrid. Figure 2 shows a sample RT reconfiguration process flowchart presented in Shariatzadeh et al 45 As it is shown in Figure 2, to achieve a successful reconfiguration, it is essential to detect faulted areas, update microgrid configuration, including switch status, and find the optimal solution.…”

Section: Overview Of Microgrid Operation Modesmentioning

confidence: 99%

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A review on real‐time simulation and analysis methods of microgrids

Ahmadiahangar

Rosin

Niaki

et al. 2019

Int Trans Electr Energ Syst

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Summary Microgrid is a recently developed concept for future power systems. The main characteristics of the microgrid are the capability of integration of renewable energy sources and the ability to operate in two grid‐connected and islanded modes. A significant challenge of microgrid implementation is developing comprehensive control methods to ensure efficient, stable, and reliable operation. Real‐time studies are a promising approach in this case. In this paper, various real‐time energy management approaches have been thoroughly explained following a new categorization of them. A significant literature review of real‐time simulation and modeling methods has also been presented. A review of different applications of hardware‐in‐the‐loop testing of the microgrid is included in the present study. Finally, a discussion on demand for further research has been made. The presented work is organized to allow a reader to understand the importance of real‐time studies of microgrids and highlight trends in literary works without delving deeply into each one.

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Section: Overview Of Microgrid Operation Modesmentioning

confidence: 99%

Section: Overview Of Microgrid Operation Modesmentioning

confidence: 99%

A review on real‐time simulation and analysis methods of microgrids

Ahmadiahangar

Rosin

Niaki

et al. 2019

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

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“…Microgrids in power systems have been in use for a long time, but recently they are drawing more attention due to expansion of renewable energy resources (Hemmatpour, Mohammadian et al 2016;Xu, Nthontho et al 2016). The lack of sufficient resources to balance out the rapid increase in demand and the availability of local generators in the form of renewable-energy power plants have made it possible for electricity utilities to use microgrids for supporting the main grid.…”

Section: Microgridmentioning

confidence: 99%

Constructing A Multi-Microgrid with the Inclusion of Renewable Energy in Oman's Rural Power System

et al. 2018

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This paper investigates the possibility of constructing multi-microgrids by interlinking the rural area systems in the Al Wusta governorate of the Sultanate of Oman, which are currently being supplied by diesel generators. It is proposed to enhance the rural system under study by switching off small diesel stations and replacing them with wind turbines. The microgrids formed in this way are then interlinked together to create multi-microgrids. The paper studies the interlinked multi-microgrids under different scenarios; in terms of voltage profiles and power flow using the ETAP software package. This study contributes to the feasibility study of retiring some diesel power plants and using renewable energy resources in rural Oman.

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“…The faulty region is isolated in case of a fault, and electrical loads with the highest priority are restored according to their levels of importance with regard to certain switching operations. Moreover, network reconfiguration (NR) can be performed for a variety of goals such as increasing DG penetration and thus fueling consumption reduction [7], meeting the highest possible energy demand [8], minimizing active power losses [9,10], reducing cost of energy and switching operations [11,12], improving power quality and reliability indices (e.g., mitigating voltage sag) [13], and system restoration with minimum loss in case of failure [14].…”

Section: Introductionmentioning

confidence: 99%

Optimal Operational Scheduling of Reconfigurable Microgrids in Presence of Renewable Energy Sources

2019

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Passive distribution networks are being converted into active ones by incorporating distributed means of energy generation, consumption, and storage, and the formation of so-called microgrids (MGs). As the next generation of MGs, reconfigurable microgrids (RMGs) are still in early phase studies, and require further research. RMGs facilitate the integration of distributed generators (DGs) into distribution systems and enable a reconfigurable network topology by the help of remote-controlled switches (RCSs). This paper proposes a day-ahead operational scheduling framework for RMGs by simultaneously making an optimal reconfiguration plan and dispatching controllable distributed generation units (DGUs) considering power loss minimization as an objective. A hybrid approach combining conventional particle swarm optimization (PSO) and selective PSO (SPSO) methods (PSO&SPSO) is suggested for solving this combinatorial, non-linear, and NP-hard complex optimization problem. PSO-based methods are primarily considered here for our optimization problem, since they are efficient for power system optimization problems, easy to code, have a faster convergence rate, and have a substructure that is suitable for parallel calculation rather than other optimization methods. In order to evaluate the suggested method’s performance, it is applied to an IEEE 33-bus radial distribution system that is considered as an RMG. One-hour resolution of the simultaneous network reconfiguration (NR) and the optimal dispatch (OD) of distributed DGs are carried out prior to this main study in order to validate the effectiveness and superiority of the proposed approach by comparing relevant recent studies in the literature.

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Optimum islanded microgrid reconfiguration based on maximization of system loadability and minimization of power losses

Cited by 51 publications

References 26 publications

A review on real‐time simulation and analysis methods of microgrids

A review on real‐time simulation and analysis methods of microgrids

Constructing A Multi-Microgrid with the Inclusion of Renewable Energy in Oman's Rural Power System

Optimal Operational Scheduling of Reconfigurable Microgrids in Presence of Renewable Energy Sources

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