Automatic restoration of large-scale distribution networks with distributed generators, voltage control devices and heating loads

Vargas, Renzo; Leite, Jônatas Boás; Mantovani, José Roberto Sanches

doi:10.1016/j.epsr.2019.105925

Cited by 16 publications

(18 citation statements)

References 31 publications

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“…This characteristic favors the simplification of these sections as single elements to facilitate the problem resolution since the solution basically consists of deciding which switches must be operated for restoration, not including decisions regarding the internal structure of the sections. A classical representation in the literature is simplifying the topology of the EDS in load blocks and switchable lines [25], [30]. However, it is necessary to comply with operational requirements within the sections; thus the restoration methods must allow the assessment of the operational conditions of the EDS in full.…”

Section: Discussionmentioning

confidence: 99%

“…Although these EDSs are not very large in relation to the number of buses, the expressive number of switches makes the problem very complex. When tests are carried out with switches in all lines, the system becomes highly more complex than a typical EDS, which usually has around 10% to 25% of switchable lines [8], [30]. In [8], e.g., a 416-bus EDS has 446 branches and 97 switches, a percentage of 22%.…”

Section: Introductionmentioning

confidence: 99%

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An AC Mathematical Model for Solving Complex Restoration Problems in Radial Distribution Systems in a Treatable Runtime

2020

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A restoration problem in a radial electrical distribution system (EDS) is solved to restore deenergized loads downstream of sectors affected by a permanent fault, transferring loads among primary feeders through switching operations. As it is a computationally complex problem, its resolution by exact optimization techniques in a treatable runtime is a difficult task. The complexity is related to the number of switches available for solution. To reduce investment costs, a typical EDS has switches only in a portion of the branches, but the number of switches tends to be expressive in larger systems. In this context, less complex restoration problems have been successfully solved in the literature by exact methods, but they tend to be prohibitive in highly complex problems. In this paper, a mathematical model with an enhanced approach solves, through exact techniques, the restoration problem in a relatively large radial EDS with the aim of evaluating its ability to obtain optimal operationally reliable solutions with low computational effort. The problem is solved without simplifying the topological structure of the system and using only two types of binary variables. The model minimizes the demand not supplied with a minimum number of switching operations, allowing considering the influence of priority loads and remotely controlled switches, and ensures a feasible and radial operation. Tests were carried out on a radial 417-bus EDS adapted to have switches at strategic locations and the results show that the model effectively provides optimal solutions and can be applied for larger systems mainly in an offline or preventive way.INDEX TERMS Large-scale distribution systems, mathematical modeling, service restoration.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An AC Mathematical Model for Solving Complex Restoration Problems in Radial Distribution Systems in a Treatable Runtime

2020

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“…Isto acontece em razão de esse problema apresentar, em geral, funções objetivos difíceis de serem expressas de uma forma precisa e que são, em geral, não suaves, pois possuem muitas não-linearidades e descontinuidades. Além disso, o elevado número de variáveis do problema pode levar a uma explosão combinatória, dificultando ainda mais a utilização de programação matemática para SDs de grande porte (com milhares de linhas, barras de carga e chaves seccionadoras) (CAMILLO et al, 2016)(CARRANO et al, 2016MANTOVANI, 2019).…”

Section: Panorama Geralunclassified

“…Entretanto, a norma IEEE Std 1547 (IEEE, 2018) incentiva a operação de microrredes de modo ilhado, tornando possível a redução do número de setores restauráveis. Na literatura estão presentes diversos trabalhos com diferentes abordagens (PERALTA; LEITE; MANTOVANI, 2019;CHEN et al, 2018b;HUANG;YANG;TAYLOR, 2016) para os geradores localizados na região restaurável afetada pela falta. Com base nos estudos realizados optou-se neste trabalho pelos dois tipos de geradores:…”

Section: Situaçãounclassified

“…O primeiro sistema teste consiste no SD de pequeno porte ilustrado na Figura 20 que já foi utilizado em diversos trabalhos (ROMERO et al, 2016;MARQUES, 2018;FERNANDES, 2019;PERALTA;MANTOVANI, 2019). Neste sistema cada setor possui somente uma barra (barra de carga ou barra de SE), com 53 barras, 61 chaves e 57 setores.…”

Section: Sistemas De Distribuição E Parâmetros Utilizados Nas Simulaçõesunclassified

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Restabelecimento de energia em sistemas de distribuição considerando a existência de geração distribuída

Carvalho¹

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Agradeço à minha mãe, Mariene, pelo exemplo, força, apoio e carinho, sem ela nada disso seria possível. Ela sempre confiou no meu potencial e me ensinou que tudo é possível quando damos nosso melhor. À minha vó, Marilene, pelo apoio e carinho todos os dias.Aos meus amigos, Amanda, Rudíny e Matheus, por me ouvirem em cada momento de dificuldade e alegria e por todo amor, apoio, força e incentivo.Aos meus novos amigos de São Carlos, Jéssica, Gabriel, Geovane e João H., pelo companheirismo e incentivo.Ao José Paulo que me ajudou no desenvolvimento de parte desse trabalho.Ao professor João Bosco pela oportunidade, acreditar no meu trabalho e paciência.Ao professor Arnulfo que me ajudou a conseguir essa oportunidade e acreditou no meu trabalho. Aos colegas do LACOSEP pelo companheirismo e apoio.A todos os profissionais do Departamento de Engenharia Elétrica e de Computação pelo profissionalismo e dedicação. À Escola de Engenharia de São Carlos por todo suporte. À CNPq pelo apoio financeiro. RESUMO CARVALHO, E. O. P. Restabelecimento de Energia em Sistemas de Distribuição Considerando a Existência de Geração Distribuída . 2020. 124p.

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Technical and Nontechnical Energy Loss Estimation Including Volt/Var Control for Active Distribution Systems

Biazzi

Bernardon

Becker

et al. 2021

J Control Autom Electr Syst

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Automatic restoration of large-scale distribution networks with distributed generators, voltage control devices and heating loads

Cited by 16 publications

References 31 publications

An AC Mathematical Model for Solving Complex Restoration Problems in Radial Distribution Systems in a Treatable Runtime

An AC Mathematical Model for Solving Complex Restoration Problems in Radial Distribution Systems in a Treatable Runtime

Restabelecimento de energia em sistemas de distribuição considerando a existência de geração distribuída

Technical and Nontechnical Energy Loss Estimation Including Volt/Var Control for Active Distribution Systems

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