Optimal Restoration/Maintenance Switching Sequence of Unbalanced Three-Phase Distribution Systems

Autor(es)

Lopez, Juan Camilo ^[1] ; Franco, John F. ^[2] ; Rider, Marcos J. ^[1] ; Romero, Ruben ^[3]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Dept Syst & Energy, BR-13083852 Campinas, SP - Brazil

^[2] Sao Paulo State Univ, BR-19274000 Rosana - Brazil

^[3] Sao Paulo State Univ, Dept Elect Engn, BR-15385 Ilha Solteira - Brazil

• Tipo de documento: Artigo Científico
• Fonte: IEEE TRANSACTIONS ON SMART GRID; v. 9, n. 6, p. 6058-6068, NOV 2018.
• Citações Web of Science: 15

Resumo

This paper presents a mixed-integer non-linear programming (MINLP) model for the optimal restoration/maintenance switching sequence of unbalanced three-phase electrical distribution systems. Once the protection coordination has identified and cleared a faulty zone, the proposed MINLP model determines the status of remotely controlled switches and the dispatchable distributed generation (DG) units, used to deenergized the troubled section of the network and supply as much load as possible. The restoration considers the switching sequence over a discrete horizon, guaranteeing that the operational constraints of the distribution system are not violated Functions in every step of the sequence. Furthermore, a set of linearization strategies are presented to transform the proposed MINLP, model into a mixed-integer linear programming (MILP) model. The use of MILP models guarantees convergence to optimality by applying convex optimization techniques. Tests are performed on an unbalanced three-phase radial distribution system consisting of 123 nodes, 12 switches, and three dispatchable DG units. The obtained results show that the proposed optimization model is a holistic procedure that can be used to efficiently manage power restoration or to minimize isolated areas in case of scheduled maintenance in modern electrical distribution systems. (AU)

• Processo FAPESP: 15/12564-1 - Estudo e Implementação de um Esquema de Self-Healing em Sistemas Modernos de Distribuição de Energia Elétrica
• Beneficiário: Juan Camilo Lopez Amezquita
• Modalidade de apoio: Bolsas no Brasil - Doutorado