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Prof. Dr.  Lutz Hofmann

https://orcid.org/0000-0002-3688-6136
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Publications

  1. 2021
  2. Published

    Pointing out the Convolution Problem of Stochastic Aggregation Methods for the Determination of Flexibility Potentials at Vertical System Interconnections

    Gerster, J., Sarstedt, M., Veith, E., Lehnhoff, S. & Hofmann, L., 3 Jun 2021, p. 1-7. 7 p.

    Research output: Contribution to conference › Paper › Research › peer review

  3. Published

    Ausgewählte Fragestellungen der Modellierung von elektrischen Energieversorgungssystemen: Zum 80. Geburtstag von Prof. Dr.-Ing. habil. Bernd R. Oswald

    Wolter, M. & Hofmann, L., 26 May 2021, In: At-Automatisierungstechnik. 69, 5, p. 351-352 2 p.

    Research output: Contribution to journal › Editorial in journal › Research › peer review

  4. Published

    Exakte und genäherte Kurzschlussstromberechnung in Netzen mit Vollumrichteranlagen

    Schäkel, N. & Hofmann, L., 26 May 2021, In: At-Automatisierungstechnik. 69, 5, p. 389-400 12 p.

    Research output: Contribution to journal › Article › Research › peer review

  5. Published

    Strukturanalyse des mit dem Erweiterten Knotenpunktverfahren formulierten Differential-algebraischen Gleichungssystems

    Huisinga, H. & Hofmann, L., 26 May 2021, In: At-Automatisierungstechnik. 69, 5, p. 353-363 11 p.

    Research output: Contribution to journal › Article › Research › peer review

  6. Published

    Anwendung und Erweiterung der Zuweisung von Oberschwingungsstrompegeln für die Netzanschlussnehmer gemäß VDE AR-N 4130

    Neufeld, A., Schütte, N. & Hofmann, L., 1 May 2021, ETG-Kongress 2021 - Von Komponenten bis zum Gesamtsystem für die Energiewende (ETG-Kongress 2021). Wuppertal, Germany

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review

  7. Published

    Survey and Comparison of Optimization-Based Aggregation Methods for the Determination of the Flexibility Potentials at Vertical System Interconnections

    Sarstedt, M., Kluß, L., Gerster, J., Meldau, T. & Hofmann, L., 29 Jan 2021, In: ENERGIES. 14, 3, 687.

    Research output: Contribution to journal › Article › Research › peer review

  8. Published

    A Fast and Accurate determination of the Feasible Operating Region for Aggregation of Distribution Grid Potentials using Linearized Optimization

    Majumdar, N., Sarstedt, M. & Hofmann, L., 2021.

    Research output: Contribution to conference › Paper › Research

  9. Published

    A sketch of unwanted gaming strategies in flexibility provision for the energy system

    Buchholz, S., Tiemann, P. H., Wolgast, T., Scheunert, A., Gerlach, J., Majumdar, N., Breitner, M., Hofmann, L., Nieße, A. & Weyer, H., 2021, 16th International Conference on Wirtschaftsinformatik, Pre-Conference Community Workshop Energy Informatics and Electro Mobility ICT. p. 33-39

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review

  10. Published

    Comparison of random sampling and heuristic optimization-based methods for determining the flexibility potential at vertical system interconnections

    Gerster, J., Sarstedt, M., Veith, E., Hofmann, L. & Lehnhoff, S., 2021, p. 1-9. 9 p.

    Research output: Contribution to conference › Paper › Research › peer review

  11. Published

    Enhancement of a Control Concept for Parallel HVDC Link Operation to Increase Flexibility for Offshore Wind Park Grid Connections

    Herrmann, M. & Hofmann, L., 2021, 2021 12th International Renewable Energy Congress (IREC). 8 p. ( International Heat Transfer Conference).

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review

  12. Published

    Harmonic Emission Limit Allocation Using VDE AR-N 4130: Application and Adaptation of Experiences from IEC TR 61000-3-6

    Schütte, N., Neufeld, A., Hofmann, L., Dommerque, R. & Nazemi, M., 2021, 2021 56th International Universities Power Engineering Conference: Powering Net Zero Emissions, UPEC 2021 - Proceedings.

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review

  13. Published

    Inclusion of Network Configurations in a Security Constrained Optimal Power Flow as a Mixed-Integer Quadratically Constrained Quadratic Program

    Kluß, L., Leveringhaus, T., Sarstedt, M. & Hofmann, L., 2021, NEIS 2021 - Conference on Sustainable Energy Supply and Energy Storage Systems. Schulz, D. (ed.). VDE Verlag GmbH, p. 236-241 6 p. (NEIS 2021 - Conference on Sustainable Energy Supply and Energy Storage Systems).

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review

  14. Published

    Linearized Optimization for Reactive Power Dispatch at Transmission Grid Level considering Discrete Transformer Tap-Settings

    Majumdar, N., Sarstedt, M., Leveringhaus, T. & Hofmann, L., 2021, 13th IEEE PES Asia-Pacific Power and Energy Engineering Conference 2021 (APPEEC). 6 p. (Asia-Pacific Power and Energy Engineering Conference, APPEEC; vol. 2021-November).

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review

  15. Published

    Potentials and Technical Requirements for the Provision of Ancillary Services in Future Power Systems with Distributed Energy Resources

    Lotz, M. R., Majumdar, N., Beutel, V., Gerlach, J., Wegkamp, C., Hoffmann, M., Kahl, L., Wussow, J., Schlachter, H., Agert, C., Breitner, M. H., Engel, B., Geißendörfer, S., Hofmann, L., Könemund, M., Kurrat, M., Leveringhaus, T. & von Maydell, K., 2021, NEIS 2021 - Conference on Sustainable Energy Supply and Energy Storage Systems. Schulz, D. (ed.). VDE Verlag GmbH, p. 53-60 8 p.

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review

  16. Published

    SiNED-ancillary services for reliable power grids in times of progressive German energiewende and digital transformation

    Wussow, J., Babazadeh, D., Beutel, V., Buchholz, S., Geissendörfer, S., Gerlach, J., Majumdar, N., von Maydell, K., Narayan, A., Hoffmann, M., Kahl, L., Leveringhaus, T., Lotz, M. R., Scheunert, A., Baboli, P. T., Tiemann, P. H., Huxoll, N., Werth, O., Agert, C., Breitner, M. H., Engel, B., Hofmann, L., Könemund, M., Kurrat, M., Lehnhoff, S., Nieße, A. & Weyer, H., 2021, ETG-Kongress 2021: Von Komponenten bis zum Gesamtsystem fur die Energiewende. Wuppertal, Germany: VDE Verlag GmbH, p. 148-153 6 p.

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review

  17. 2020
  18. Published

    Robust nonlinear mathematical transmission expansion planning based on German electricity market simulation

    Stock, D. S., Harms, Y., Mende, D. & Hofmann, L., Dec 2020, In: Electric power systems research. 189, 106685.

    Research output: Contribution to journal › Article › Research › peer review

  19. Published

    Unified fault matrix method for the calculation of shunt and series faults in power systems with complete duality of shunt and series fault matrices

    Hofmann, L., Dec 2020, In: Electric power systems research. 189, 106556.

    Research output: Contribution to journal › Article › Research › peer review

  20. Published

    NSON II: Next Steps in Economical Connection and International Integration of Offshore Wind Energy in the North Seas

    Mende, D., Harms, Y., Härtel, P., Frischmuth, F., Stock, S., Braun, M., Herrmann, M., Hofmann, L., Valois, M., Bley, A., Hahn, P., Jurczyk, J. & Rathke, C., 12 Nov 2020.

    Research output: Contribution to conference › Paper › Research › peer review

  21. Published

    Consistent solution for electric power system simulations with inconsistent initial values

    Huisinga, H. H. & Hofmann, L., 2020, Proceedings - 2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Systems Europe, EEEIC / I and CPS Europe 2020. 6 p.

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review

  22. Published

    Detailed reasoning and derivation of a convexificated quadratic approximation approach for the Security Constrained Optimal Power Flow

    Leveringhaus, T. & Hofmann, L., 2020, Proceedings - 2020 International Conference on Smart Grids and Energy Systems, SGES 2020. Los Alamitos, CA, USA: IEEE Computer Society, p. 261-266 6 p. 9364447

    Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review

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