Lenz, Dr. Ralf

Position:

Guest

Room:

3303

Division:

Mathematical Algorithmic Intelligence

Department:

Applied Algorithmic Intelligence Methods (A²IM)

Research group:

Prescriptive Systems

Mail:

lenz

zib.de

Phone:

+49 30 84185 - 180

Fax:

+49 30 84185 - 269

Personal website:

http://www.zib.de/lenz

Projects

Member

ForNe - Research Cooperation Network Optimization

Publications

2022 2021 2020 2019 2018 2016 2015

2022
Ralf Lenz, Kai-Helge Becker	Optimization of Capacity Expansion in Potential-driven Networks including Multiple Looping - A comparison of modelling approaches	OR Spectrum, Vol.44, pp. 179-224, 2022 (preprint available as ZIB-Report 18-44)	PDF (ZIB-Report) PDF (ZIB-Report) BibTeX DOI
Ralf Lenz, Felipe Serrano	Tight Convex Relaxations for the Expansion Planning Problem	Journal of Optimization Theory and Applications, Vol.194, pp. 325-352, 2022 (preprint available as ZIB-Report 21-05)	PDF (ZIB-Report) BibTeX DOI
2021
Kai Hoppmann-Baum, Felix Hennings, Ralf Lenz, Uwe Gotzes, Nina Heinecke, Klaus Spreckelsen, Thorsten Koch	Optimal Operation of Transient Gas Transport Networks	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) BibTeX DOI
Ralf Lenz	Optimization of Stationary Expansion Planning and Transient Network Control by Mixed-Integer Nonlinear Programming	Doctoral thesis, Technische Universität Berlin, 2021	BibTeX DOI
Ralf Lenz	Pipe Merging for Transient Gas Network Problems	ZIB-Report 21-10	PDF BibTeX URN
2020
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	Mathematical Optimization for Efficient and Robust Energy Networks, Springer, 2020, ISBN: 978-3-030-57442-0	BibTeX DOI
2016
Ralf Lenz, Robert Schwarz	Optimal Looping of Pipelines in Gas Networks	ZIB-Report 16-67	PDF BibTeX URN
2015
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	Evaluating Gas Network Capacities, 2015, ISBN: 9781611973686	BibTeX
Jesco Humpola, Armin Fügenschuh, Benjamin Hiller, Thorsten Koch, Thomas Lehmann, Ralf Lenz, Robert Schwarz, Jonas Schweiger	The Specialized MINLP Approach	Evaluating Gas Network Capacities, 2015, ISBN: 9781611973686	BibTeX