Abstract:
This paper presents a mixed-integer non-linear programming (MINLP) model for the optimal restoration/maintenance switching sequence of unbalanced three-phase electrical d...Show MoreMetadata
Abstract:
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 de-energized 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 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.
Published in: IEEE Transactions on Smart Grid ( Volume: 9, Issue: 6, November 2018)
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- IEEE Keywords
- Index Terms
- Distribution System ,
- Sequencing System ,
- Unbalanced Distribution ,
- Switching Sequence ,
- Unbalanced Distribution System ,
- Sequential Steps ,
- Programming Model ,
- Convex Optimization ,
- Mixed-integer Programming ,
- Microgrid ,
- Mixed Integer Linear Programming ,
- Routine Maintenance ,
- Operational Constraints ,
- Mixed-integer Programming Model ,
- Mixed-integer Nonlinear Programming ,
- Mixed Integer Linear Programming Model ,
- Nonlinear Programming Model ,
- Network Section ,
- Mixed-integer Nonlinear Programming Model ,
- Objective Function ,
- Fault Location ,
- Binary Decision Variables ,
- Current Limitations ,
- Correction Process ,
- Active Switches ,
- Current Magnitude ,
- Switching Operation ,
- Fault Zone ,
- Three-phase Currents ,
- Voltage Magnitude
- Author Keywords
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Distribution System ,
- Sequencing System ,
- Unbalanced Distribution ,
- Switching Sequence ,
- Unbalanced Distribution System ,
- Sequential Steps ,
- Programming Model ,
- Convex Optimization ,
- Mixed-integer Programming ,
- Microgrid ,
- Mixed Integer Linear Programming ,
- Routine Maintenance ,
- Operational Constraints ,
- Mixed-integer Programming Model ,
- Mixed-integer Nonlinear Programming ,
- Mixed Integer Linear Programming Model ,
- Nonlinear Programming Model ,
- Network Section ,
- Mixed-integer Nonlinear Programming Model ,
- Objective Function ,
- Fault Location ,
- Binary Decision Variables ,
- Current Limitations ,
- Correction Process ,
- Active Switches ,
- Current Magnitude ,
- Switching Operation ,
- Fault Zone ,
- Three-phase Currents ,
- Voltage Magnitude
- Author Keywords