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Steady-state flow computation in gas distribution networks with multiple pressure levels

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  • Cavalieri, Francesco

Abstract

Natural gas networks are critical lifelines essential to the continued well-being of a community. Whatever its scope, the analysis of a gas network cannot rely on simple connectivity methods: limited tolerance on quantity and quality (pressure) to maintain serviceability to end-users generates the need for a flow analysis. Scarceness of the literature on flow analysis for gas networks and limitations of the available methods prompted this work. A novel complete steady-state flow formulation is reported, up to the governing nonlinear system of equations and the expression of the error function to be minimised to find the solution. Important features, such as the correction for elevation change in pipes and the pressure-driven mode, are included. The possibility to treat multiple pressure levels, as is the case of real networks, represents the main novelty of this work. The presented procedure was coded into a programming language and applied to several test cases, one of which being a non-trivial realistic gas network with 67 nodes and 88 edges. Such examples served the purpose to validate the formulation and to show its computational performance in the presence of multiple pressure levels.

Suggested Citation

  • Cavalieri, Francesco, 2017. "Steady-state flow computation in gas distribution networks with multiple pressure levels," Energy, Elsevier, vol. 121(C), pages 781-791.
    • Handle: RePEc:eee:energy:v:121:y:2017:i:c:p:781-791
    DOI: 10.1016/j.energy.2017.01.062
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    References listed on IDEAS

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    Cited by:

    1. Hong, Bingyuan & Li, Xiaoping & Li, Yu & Chen, Shilin & Tan, Yao & Fan, Di & Song, Shangfei & Zhu, Baikang & Gong, Jing, 2022. "An improved hydraulic model of gathering pipeline network integrating pressure-exchange ejector," Energy, Elsevier, vol. 260(C).
    2. Cavalieri, Francesco, 2020. "Seismic risk assessment of natural gas networks with steady-state flow computation," International Journal of Critical Infrastructure Protection, Elsevier, vol. 28(C).
    3. Nikolay Novitsky & Egor Mikhailovsky, 2021. "Generalization of Methods for Calculating Steady-State Flow Distribution in Pipeline Networks for Non-Conventional Flow Models," Mathematics, MDPI, vol. 9(8), pages 1-16, April.

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