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Backward-forward sweep-based islanding scenario generation algorithm for defensive splitting of radial distribution systems

Backward-forward sweep-based islanding scenario generation algorithm for defensive splitting of radial distribution systems

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This chapter proposes a novel two-stage scenario generation strategy for controlled or defensive islanding of smart distribution systems. In the first step, the primary line and bus data matrices have been determined with respect to deterministic and probabilistic nodes and branches for each island. In the second stage, line and bus information matrices can be updated for all islands in each generated scenario using node elimination matrices (NEMs). Backward-forward power flow is then solved in each island according to modified line and bus information matrices. In this study, binary imperialistic competitive algorithm (BICA) is used to find the best splitting points with the aim of minimizing total active power losses and nodal voltage deviations considering voltage limits and feeder capacity constraints. The proposed strategy is evaluated through an extensive test conducted on 12.66 kV, 33-bus radial distribution system with three DG units to validate the speed and the effectiveness of the developed algorithm.

Chapter Contents:

  • 8.1 Introduction
  • 8.2 Problem formulation
  • 8.2.1 Proposed backward - forward-sweep-based islanding scenario generation algorithm
  • 8.2.2 Objective function and constraints
  • 8.2.3 Binary imperialistic-competitive-algorithm-based optimization process
  • 8.3 Simulation studies
  • 8.4 Conclusion
  • Appendix
  • References

Inspec keywords: load flow; matrix algebra; distributed power generation; power distribution faults

Other keywords: bus data matrices; primary line; defensive islanding; node elimination matrices; smart distribution systems; backward-forward sweep-based islanding scenario generation; BICA; probabilistic nodes; voltage limits; nodal voltage deviations; bus information matrices; active power loss; feeder capacity constraints; line information matrices; voltage 12.66 kV; 33-bus radial distribution system; controlled islanding; backward-forward power flow; deterministic nodes; binary imperialistic competitive algorithm; defensive splitting; two-stage scenario generation

Subjects: Linear algebra (numerical analysis); Power system management, operation and economics; Distribution networks; Distributed power generation

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