Optimal island partitioning of smart distribution systems to improve system restoration under emergency conditions

Hosseinnezhad, Vahid; Rafiee, Mansour; Ahmadian, Mohammad Taghi; Siano, Pierluigi

doi:10.1016/j.ijepes.2017.11.003

Cited by 49 publications

(40 citation statements)

References 24 publications

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“…A resilience‐based modeling framework for evaluating and optimizing restoration policies for power distribution systems under severe weather events is presented in Reference . A systematic optimization strategy is considered distribution network restoration after the severe disruptions caused by power outages deals . In Reference , the concept of resilience is defined by the creation of an MG. First, the nonlinear problem is converted to a linear problem.…”

Section: Introductionmentioning

confidence: 99%

Self‐healing optimization in active distribution network to improve reliability, and reduction losses, switching cost and load shedding

Choopani

Hedayati

Effatnejad

2020

Int Trans Electr Energ Syst

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Summary Self‐healing refers to the specific ability of the smart grid that takes precautionary actions before the fault. It also performs fault location, isolation, and service restoration to minimize network damage after the fault. This process is performed with the help of communications infrastructure and remote control. The main components of this article include the use of graph theory and binary particle swarm optimization algorithm for optimal switching, the use of particle swarm optimization algorithm and forward‐backward sweep load flow for load shedding and distributed generation rescheduling, investigating the effect of self‐healing on improved reliability, power losses reduction, and load shedding reduction and the present a new approach for self‐healing optimization and a new mathematical model. The problem of self‐healing due to nonlinear and unbounded constraints is one of the nonconvex mixed integer nonlinear programming optimization problems. The optimization problem becomes a convex mixed integer linear programming optimization problem using the proposed scheme. Due to the nonlinearity and the nonconvexity of the problem, commercial solvers are not able to solve this problem. Even the Baron solver, which is used to solve nonconvex nonlinear problems, cannot achieve the optimal global solution. However, the proposed method is easily able to achieve the optimal solution by eliminating the nonlinear and nonconvex element. A modified RBTS‐4 distribution system is used as a test system. The IEEE 33‐bus distribution system is used to validate the proposed method. The results of case studies demonstrate the effectiveness of the proposed methodology.

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Section: Introductionmentioning

confidence: 99%

Self‐healing optimization in active distribution network to improve reliability, and reduction losses, switching cost and load shedding

Choopani

Hedayati

Effatnejad

2020

Int Trans Electr Energ Syst

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“…IEEE 1547 recommendation [14] encourages ADS to sectionalize the system into multiple networks, by participating DERs in the case of fault occurrence, which can improve load restoration. Accordingly, intentional islanding has been recently proposed and studied in [15][16][17][18][19][20] to improve the reliability of distribution systems. Intentional islanding is the procedure of selecting self-sufficient areas, called islands to restore critical loads through local DERs after a fault occurrence [15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…Accordingly, intentional islanding has been recently proposed and studied in [15][16][17][18][19][20] to improve the reliability of distribution systems. Intentional islanding is the procedure of selecting self-sufficient areas, called islands to restore critical loads through local DERs after a fault occurrence [15][16][17][18][19][20]. Feasible intentional islanding is characterized as high-priority load restoration, minimization of the number of switching operations, meeting the operation constraints, and maintaining the radial structure of islands [4].…”

Section: Introductionmentioning

confidence: 99%

“…Intentional islanding problem is a complex problem. Therefore, a decomposition strategy is usually used to split the problem into two sequential subproblems [16][17][18][19][20]. In the first sub-problem, primary islands are selected by determining the on/off status of switches in each line of ADS, by solving a mixed integer linear programming (MILP).…”

Section: Introductionmentioning

confidence: 99%

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Resilience-oriented intentional islanding of reconfigurable distribution power systems

Oboudi

Mohammadi

Rastegar

2019

J. Mod. Power Syst. Clean Energy

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Participation of distributed energy resources in the load restoration procedure, known as intentional islanding, can significantly improve the distribution system reliability. Distribution system reconfiguration can effectively alter islanding procedure and thus provide an opportunity to supply more demanded energy and reduce distribution system losses. In addition, high-impact events such as hurricanes and earthquake may complicate the procedure of load restoration, due to disconnection of the distribution system from the upstream grid or concurrent component outages. This paper presents a two-level method for intentional islanding of a reconfigurable distribution system, considering high impact events. In the first level, optimal islands are selected according to the graph model of the distribution system. In the second level, an optimal power flow (OPF) problem is solved to meet the operation constraints of the islands by reactive power control and demand side management. The proposed problem in the first level is solved by a combination of depth first search and particle swarm optimization methods. The OPF problem in the second level is solved in DIgSILENT software. The proposed method is implemented in the IEEE 69-bus test system, and the results show the validity and effectiveness of the proposed algorithm.

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“…A integração massiva de unidades de GD, fez do ilhamento intencional uma estratégia capaz de promover melhorias na confiabilidade da rede sob condições de emergência. Neste sentido, o ilhamento intencional quando viável, pode ser uma estratégia que auxilie a restauração póscontingência da rede de distribuição que encontra-se desconectada do restante da elétrica (EL-ZONKOLY, 2017;HOSSEINNEZHAD et al, 2018).…”

Section: Justificativaunclassified

Metodologias para determinar a viabilidade técnica do ilhamento intencional de geradores distribuídos em sistemas de distribuição de energia elétrica

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Aos meus pais, Raimundo e Denalva, e ao meu irmão Rony. À Nattally e aos meus filhos Cecília e Gustavo. Aos meus sobrinhos Ana e João. À minha família. Agradecimentos Aos meus pais, irmão e família pelo amor incondicional, incentivos e ensinamentos. Ao Prof. José, cujas contribuições como orientador foram essenciais para o desenvolvimento deste trabalho, crescimento pessoal e profissional. Obrigado por ter me acompanhado ao longo da pós-graduação, pela amizade, incentivos e créditos dados ao longo desses anos. Ao Prof. Renato Monaro que, por meio de seus questionamentos e apoio auxiliaram no desenvolvimento deste trabalho. A todos os professores da USP, pelos conhecimentos compartilhados. Ao Laboratório de Sistemas de Energia Elétrica pelos equipamentos e ambiente organizacional disponibilizados no desenvolvimento do trabalho. Aos funcionários do departamento de Engenharia Elétrica e Computação da EESC/USP, pela colaboração e eficiência. Aos amigos Kurata, Guilherme e Olívia pelo apoio e companherismo durante o período que estive na cidade de São Paulo. Aos amigo(a)s do Departamento de Engenharia Elétrica e Computação da Escola de Engenharia de São Carlos pela amizade, auxílio e momentos compartilhados. Aos amigos das repúblicas, Fellipe, Valdemir, Diego, Elian e Marcelo, pela convivência e amizade. Aos cidadãos brasileiros que pagam seus impostos e contribuíram por minha formação profissional ao longo dos anos. "O pensar é para o homem, o que é voar para os pássaros. Não toma como exemplo a galinha quando podes ser uma cotovia." (Albert Einstein) Palavras-chave: Geração distribuída. Detecção de Ilhamento. Ilhamento Intencional. Gerador síncrono. Relés de Proteção..

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Optimal island partitioning of smart distribution systems to improve system restoration under emergency conditions

Cited by 49 publications

References 24 publications

Self‐healing optimization in active distribution network to improve reliability, and reduction losses, switching cost and load shedding

Self‐healing optimization in active distribution network to improve reliability, and reduction losses, switching cost and load shedding

Resilience-oriented intentional islanding of reconfigurable distribution power systems

Metodologias para determinar a viabilidade técnica do ilhamento intencional de geradores distribuídos em sistemas de distribuição de energia elétrica

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