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Abstract : The natural gas networks require very important investments to cope with a still growing demand and to satisfy the new regulatory constraints. The gas market deregulation imposed to the gas network operators, first, transparency rules of a natural monopoly to justify their costs and ultimately their tariffs, and, second, market fluidity objectives in order to facilitate access for competition to the end-users. These major investments are the main reasons for the use of optimization techniques aiming at reducing the costs. Due to the discrete choices (investment location, limited choice of additional capacities, timing) crossed with physical non linear constraints (flow/pressures relations in the pipe or operating ranges of compressors), the programs to solve are Large Mixed Non Linear Programs (MINLP). As these types of programs are known to be hard to solve exactly in polynomial times (NP-hard), advanced optimization methods have to be implemented to obtain realistic results. The objectives of this thesis are threefold. First, one states several investment problems modeling of natural gas networks from industrial world motivations. Second, one identifies the most suitable methods and algorithms to the formulated problems. Third, one exposes the main advantages and drawbacks of these methods with the help of numerical applications on real cases.
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Contributor : Jean Andre Connect in order to contact the contributor
Submitted on : Wednesday, November 24, 2010 - 10:10:12 PM
Last modification on : Tuesday, November 22, 2022 - 2:26:15 PM
Long-term archiving on: : Friday, February 25, 2011 - 3:11:01 AM


  • HAL Id : tel-00539689, version 1



Jean Andre. OPTIMIZATION OF INVESTMENTS IN GAS NETWORKS. Mathematics [math]. Université du Littoral Côte d'Opale, 2010. English. ⟨NNT : ⟩. ⟨tel-00539689⟩



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