Centralized Self-Healing Scheme for Electrical Distribution Systems
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Data
2016-01-01
Autores
Cavalcante, Patricia L.
Lopez, Juan Camilo
Franco, John F. [UNESP]
Rider, Marcos J.
Garcia, Ariovaldo V.
Malveira, Marcos R. R.
Martins, Luana L.
Direito, Luiz Carlos M.
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Editor
Ieee-inst Electrical Electronics Engineers Inc
Resumo
In this paper, a two-stage procedure is proposed in order to solve the centralized self-healing scheme for electrical distribution systems. The considered self-healing actions are the reconfiguration of the distribution grid and, if needed, node and zone load-shedding. Thus, the proposed procedure determines the status of the switching devices in order to effectively isolate a faulty zone and minimize the number of de-energized nodes and zones, while ensuring that the operative and electrical constraints of the system are not violated. The proposed method is comprised of two stages. The first stage solves a mixed integer linear programming (MILP) problem in order to obtain the binary decision variables for the self-healing scheme (i.e., the switching device status and energized zones). In the second stage, a nonlinear programming (NLP) problem is solved in order to adjust the steady-state operating point of the topology found in the first stage (i.e., correction of the continuous electrical variables and load-shedding optimization). Commercial optimization solvers are used in the first stage to solve the MILP problem and in the second stage to solve the NLP problem. A 44-node test system and a real Brazilian distribution system with 964-nodes were used to test and verify the proposed methodology.
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Palavras-chave
Centralized self-healing scheme, load-shedding, mixed integer nonlinear programming, service restoration
Como citar
Ieee Transactions On Smart Grid. Piscataway: Ieee-inst Electrical Electronics Engineers Inc, v. 7, n. 1, p. 145-155, 2016.