Optimizing the transient control of gas networks is a highly challenging task. The corresponding model incorporates the combinatorial complexity of determining the settings for the many active elements as well as the non-linear and non-convex nature of the physical and technical principles of gas transport. In this paper, we present the latest improvements of our ongoing work to tackle this problem for real-world, large-scale problem instances: By adjusting our mixed-integer non-linear programming model regarding the gas compression capabilities in the network, we reflect the technical limits of the underlying units more accurately while maintaining a similar overall model size. In addition, we introduce a new algorithmic approach that is based on splitting the complexity of the problem by first finding assignments for discrete variables and then determining the continuous variables as locally optimal solution of the corresponding non-linear program. For the first task, we design multiple different heuristics based on concepts for general time-expanded optimization problems that find solutions by solving a sequence of sub-problems defined on reduced time horizons. To demonstrate the competitiveness of our approach, we test our algorithm on particularly challenging historical demand scenarios. The results show that high-quality solutions are obtained reliably within short run times, making the algorithm well-suited to be applied at the core of time-critical industrial applications.
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@article{OJMO_2024__5__A1_0, author = {Felix Hennings and Kai Hoppmann-Baum and Janina Zittel}, title = {Optimizing transient gas network control for challenging real-world instances using {MIP-based} heuristics}, journal = {Open Journal of Mathematical Optimization}, eid = {1}, pages = {1--34}, publisher = {Universit\'e de Montpellier}, volume = {5}, year = {2024}, doi = {10.5802/ojmo.29}, language = {en}, url = {https://ojmo.centre-mersenne.org/articles/10.5802/ojmo.29/} }
TY - JOUR AU - Felix Hennings AU - Kai Hoppmann-Baum AU - Janina Zittel TI - Optimizing transient gas network control for challenging real-world instances using MIP-based heuristics JO - Open Journal of Mathematical Optimization PY - 2024 SP - 1 EP - 34 VL - 5 PB - Université de Montpellier UR - https://ojmo.centre-mersenne.org/articles/10.5802/ojmo.29/ DO - 10.5802/ojmo.29 LA - en ID - OJMO_2024__5__A1_0 ER -
%0 Journal Article %A Felix Hennings %A Kai Hoppmann-Baum %A Janina Zittel %T Optimizing transient gas network control for challenging real-world instances using MIP-based heuristics %J Open Journal of Mathematical Optimization %D 2024 %P 1-34 %V 5 %I Université de Montpellier %U https://ojmo.centre-mersenne.org/articles/10.5802/ojmo.29/ %R 10.5802/ojmo.29 %G en %F OJMO_2024__5__A1_0
Felix Hennings; Kai Hoppmann-Baum; Janina Zittel. Optimizing transient gas network control for challenging real-world instances using MIP-based heuristics. Open Journal of Mathematical Optimization, Volume 5 (2024), article no. 1, 34 p. doi : 10.5802/ojmo.29. https://ojmo.centre-mersenne.org/articles/10.5802/ojmo.29/
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