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Gas and Electrcicity Networks Co-Planning in Microgrid Generations

Zehtab, Omid | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 49063 (46)
  4. University: Sharif University of Technology
  5. Department: Energy Engineering
  6. Advisor(s): Fotuhi-Firuzabad, Mahmud; Rajabi-Ghahnavieh, Abbas
  7. Abstract:
  8. As a long-established approach, the electricity and natural gas networks have been operated and planned independently. Nevertheless, in recent years there has been a significant progress in energy conversion technologies in microgrids, thus making the electricity and gas networks more connected on the costumers’ side and also enabling users to utilize each of the carriers interchangeably. This increasing correlation between the two networks has led us to a new approach called co-planning of electricity and natural gas networks.This thesis aimed to take a closer look at this new approach and tried to study different aspects of it. Based on the concept of useful energy, a new approach has been presented for co-planning of gas and electricity networks. The objective is to minimize the total investment and energy cost of the distribution systems as well as that of the end use equipments. Various constraints associated with the gas and electricity networks have also been included. The problem is formulated as mixed-integer non-linear optimization problem which was solved using genetic algorithm and non-linear optimization. Once the optimization problem solved, the optimal route and capacity for the gas and electricity distribution facilities, the optimal use of gas-based and electricity-based technologies at the end-use level as well as the optimal size and location of distributed generation units are also determined as well.The proposed approach has been applied to a 7-node test system and the effect of various DG price and density scenarios have been discussed. It was observed that, in addition to the potential improvement in energy consumption pattern, the co-planning approach can entirely substitute one form of the carrier for the other in some specific regions. As a result in sparsely populated regions, the electricity network can substitute the natural gas network and prevents the deployment of an extensive gas grid
  9. Keywords:
  10. Useful Energy ; Distributed Generation ; Energy Conversion ; Natural Gas ; Microgrid ; Gas and Electricity Networks Co-Planning

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