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Simultaneous Expansion Planning of Distribution Network and Microgtrids

Zayer, Mansour | 2019

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 52405 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Hosseini, Hamid
  7. Abstract:
  8. Renewable resources, because of their compatibility with the environment, accessibility, and low cost of operation, have become the center of unprecedented attention. Since the output of these resources cannot be predicted accurately, they are usually implemented in microgrids with conventional generating units and energy storage systems.Furthermore, distribution networks are integral parts of power systems, and many studies have been conducted in order to improve them. Because of high investment and operation costs of distribution networks and environmental concerns, it is necessary to conduct meticulous economic studies so that with proper investments, profitable opportunities are provided for the private sector to enter this area. Many studies have shown that the presence of the private sector will considerably reduce the total cost of energy production. Moreover, an increased penetration of renewable resources can be achieved.Therefore, considering the fact that in this study, microgrids decisions are independent of distribution network operator and their goals are to maximize their profits, by simultaneous expansion planning of distribution network and microgrids, we can reach an optimal plan where objectives of both sides are taken into consideration. So, in this study, two linear mixed-integer models for the planning of microgrids and expansion planning of distribution network are defined. Then, these two models are integrated into a single model, and the expansion planning of distribution network and microgrids is solved simultaneously. In this model, the total objective function is comprised of two objective functions. First, minimizing the total expansion planning cost of the distribution network and the loss cost. Second, maximizing the profit of microgrids. Solving this model ensures a minimum expansion planning cost and loss cost for the distribution network, along with maximum profits for the microgrids.In order to evaluate the proposed methodology, it was implemented on a test network, and its results were compared with results from the conventional expansion planning of distribution network. Results indicate that with simultaneous expansion planning of distribution network and microgrids, a reduction in distribution network costs and loss cost is obtained, along with great investment opportunities with proper profitability
  9. Keywords:
  10. Planning ; Distribution Networks Planning ; Microgird Planning ; Renewable Energy Resources

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