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Effects of Optimal DG Operation Point on Loss Reduction due to Network Reconfiguration

Seyyed Mahdavi, Saeed | 2009

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 39795 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Abbaspur Tehrani Fard, Ali
  7. Abstract:
  8. During the last few years, utilization of distributed generation (DG) in power systems has been widely increased. This trend has magnified studying the effects and impacts of DG on such systems. One of the benefits of DGs in a power system is loss reduction. If determining DG size and place is done properly, the loss of the network can be minimized. Another way of reducing loss in distribution network is by reconfiguring the network. During the reconfiguration, constraints like being radial, avoiding load isolation as well as voltage/current limitations must be taken into consideration. Taking these constraints into account makes reconfiguration an optimization problem. In this project, the effects of optimal DG placement on loss reduction, resulted by network reconfiguration, has been studied. For this purpose, at first different models of output DG power, are discussed. Then an efficient approach for optimizing size and place of DGs in network is proposed. Moreover, network reconfiguration is performed for the proposed optimum placed DGs. In order to solve optimization problems, Genetic Algorithm (GA) has been used. Finally, experimental results of DG placement using the proposed method and network reconfiguration for different types of DGs in 15 and 33-bus systems are presented.

  9. Keywords:
  10. Genetic Algorithm ; Dispersed Generation ; Loss Reduction ; Optimal Placement ; Distribution Line Carrier ; Reconfiguration

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