2022
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| Ralf Lenz, Kai-Helge Becker |
Optimization of Capacity Expansion in Potential-driven Networks including Multiple Looping - A comparison of modelling approaches
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OR Spectrum, Vol.44, pp. 179-224, 2022 (preprint available as ZIB-Report 18-44) |
PDF (ZIB-Report)
PDF (ZIB-Report)
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DOI
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| Ralf Lenz, Felipe Serrano |
Tight Convex Relaxations for the Expansion Planning Problem
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Journal of Optimization Theory and Applications, Vol.194, pp. 325-352, 2022 (preprint available as ZIB-Report 21-05) |
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2021
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| Kai Hoppmann-Baum, Felix Hennings, Ralf Lenz, Uwe Gotzes, Nina Heinecke, Klaus Spreckelsen, Thorsten Koch |
Optimal Operation of Transient Gas Transport Networks
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Optimization and Engineering, Vol.22, pp. 735-781, 2021 (preprint available as ZIB-Report 19-23) |
PDF (ZIB-Report)
PDF (ZIB-Report)
PDF (ZIB-Report)
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DOI
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Ralf Lenz
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Optimization of Stationary Expansion Planning and Transient Network Control by Mixed-Integer Nonlinear Programming
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Doctoral thesis, Technische Universität Berlin, 2021 |
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Ralf Lenz
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Pipe Merging for Transient Gas Network Problems
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ZIB-Report 21-10 |
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2020
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| R. Schwarz, F. Lacalandra, L. Schewe, A. Bettinelli, D. Vigo, A. Bischi, T. Parriani, E. Martelli, K. Vuik, R. Lenz, H. Madsen, I. Blanco, D. Guericke, I. Yüksel-Ergün, J. Zittel |
Network and Storage
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Mathematical Optimization for Efficient and Robust Energy Networks, Springer, 2020, ISBN: 978-3-030-57442-0 |
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DOI
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2016
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| Ralf Lenz, Robert Schwarz |
Optimal Looping of Pipelines in Gas Networks
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ZIB-Report 16-67 |
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2015
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| Benjamin Hiller, Jesco Humpola, Thomas Lehmann, Ralf Lenz, Antonio Morsi, Marc Pfetsch, Lars Schewe, Martin Schmidt, Robert Schwarz, Jonas Schweiger, Claudia Stangl, Bernhard Willert |
Computational results for validation of nominations
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Evaluating Gas Network Capacities, 2015, ISBN: 9781611973686 |
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| Jesco Humpola, Armin Fügenschuh, Benjamin Hiller, Thorsten Koch, Thomas Lehmann, Ralf Lenz, Robert Schwarz, Jonas Schweiger |
The Specialized MINLP Approach
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Evaluating Gas Network Capacities, 2015, ISBN: 9781611973686 |
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zib.de