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Improved Adaptive Time Step Method for Natural Gas Pipeline Transient Simulation

Author

Listed:
  • Qiao Guo

    (College of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710312, China)

  • Yuan Liu

    (College of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710312, China)

  • Yunbo Yang

    (Petrochina Changqing Oilfield Changbei Operation Company, Xi’an 710018, China)

  • Tao Song

    (Changqing Oilfield Second Oil Transportation Office, Xianyang 712000, China)

  • Shouxi Wang

    (College of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710312, China)

Abstract

As the natural gas pipeline network becomes larger and more complicated, a stricter requirement of computation efficiency for the large and complicated network transient simulation should be proposed. The adaptive time step method has been widely used in the transient simulation of natural gas pipeline networks as a significant way to improve computation efficiency. However, the trial calculation process, which is the most time-consuming process in time step adjustment, was used to adjust the time step in these methods, reducing the efficiency of time step adjustment. In order to reduce the number of trial calculations, and improve the calculation efficiency, an improved adaptive time step method is proposed, which proposes the concept of energy number and judges the energy number of the boundary conditions after judging whether the variation of the pipeline state is tolerable. A comparison between the adaptive time step method and the improved adaptive time step method in the restart process of natural gas pipelines and an actual operation of the XB section in China shows the accuracy, effect, and efficiency of the improved adaptive time step method. The results show that with the same accuracy, 27% fewer trial calculation processes and 24.95% fewer time levels are needed in the improved time step method.

Suggested Citation

  • Qiao Guo & Yuan Liu & Yunbo Yang & Tao Song & Shouxi Wang, 2022. "Improved Adaptive Time Step Method for Natural Gas Pipeline Transient Simulation," Energies, MDPI, vol. 15(14), pages 1-14, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:14:p:4961-:d:857305
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    References listed on IDEAS

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    1. Fan, Di & Gong, Jing & Zhang, Shengnan & Shi, Guoyun & Kang, Qi & Xiao, Yaqi & Wu, Changchun, 2021. "A transient composition tracking method for natural gas pipe networks," Energy, Elsevier, vol. 215(PA).
    2. Vasyl Zapukhliak & Lyubomyr Poberezhny & Pavlo Maruschak & Volodymyr Grudz Jr. & Roman Stasiuk & Janette Brezinová & Anna Guzanová, 2019. "Mathematical Modeling of Unsteady Gas Transmission System Operating Conditions under Insufficient Loading," Energies, MDPI, vol. 12(7), pages 1-14, April.
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    Cited by:

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