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Reconfiguration and Capcitor Placement in Distribution Systems for Loss Reduction and Reliability Enhancement

Rezaei, Pooya | 2010

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 41392 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Vakilian, Mehdi
  7. Abstract:
  8. Capacitor setting and reconfiguration are of main means of loss reduction and voltage profile improvement in distribution system operation. Cooperation between these two strategies can effectively minimize power losses in distribution system automation. Also, from the medium and long term viewpoint, capacitor placement and reconfiguration can be used for loss reduction and reliability enhancement. In this section, the sum of losses cost, capacitor investment cost and reliability cost should be minimized. Regarding the need to solve two non-linear combinatorial optimization problems simultaneously, metaheuristic algorithms are used in this thesis. Specifically, Elitist Genetic Algorithm, Particle Swarm Optimization algorithm and one of its powerful variants and Harmony Search algorithm are used and compared from the viewpoint of solution convergence. In this thesis, an algorithm is prposed for reliability evaluation of the network taking into account reconfiguration and protection schemes in the network. The computations are performed using this algorithm. Different approaches are used to solve the problem and three sample distribution systems in addition to one real system are used for simulation. These approaches study the effect of considering load duration curve and reliability costs to minimize the total costs. A comparison with previous and recent works is performed for most of the simulations and the advantages of the solution methods and different approaches are shown
  9. Keywords:
  10. Loss Reduction ; Reliability Improvment ; Meta Heuristic Algorithm ; Distribution System Reconfiguration ; Capacitor Placement

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