Prof. Dr.-Ing. habil. Lutz Hofmann

Alferink, M., Reus, L., Hofmann, L., & Michels, K. (Angenommen/im Druck). Robust Model Predictive Control-Based Energy Management System for the Island Power System of Suðuroy, Faroe Islands. In 2024 63rd IEEE Conference on Decision and Control (CDC)

Mende, D., & Hofmann, L. (2024). Optimised Congestion Management Using Curative Measures in Combined AC/DC Systems with Flexible AC Transmission Systems. ENERGIES, 17(9), Artikel 2157. https://doi.org/10.3390/en17092157

Peters, L., Schafer, M., Kastner, T. C., Kutzner, R., & Lutz Hofmann, H. (2024). Efficient Identification and Tuning of Gas Turbine Models Using Black-Box Optimization. In CANDO-EPE 2023 - Proceedings: IEEE 6th International Conference and Workshop Obuda on Electrical and Power Engineering (S. 237-242). (Proceedings: IEEE 6th International Conference and Workshop Obuda on Electrical and Power Engineering). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CANDO-EPE60507.2023.10418001

Reus, L., Alferink, M., Michels, K., & Hofmann, L. (Angenommen/im Druck). Frequency Restoration Control and Its Impact on Model Predictive Control of Island Power Systems. In 2024 International Conference on Power System Technology (POWERCON)

Reus, L., Alferink, M., Michels, K., & Hofmann, L. (2024). Simulation Studies of a Model Predictive Control-Based Operation of Island Power Systems. In 1. Helgoland Power and Energy Conference - 24. Dresdener Kreis 2023 https://doi.org/10.15488/15895

Stark, L., & Hofmann, L. (2024). TSO-DSO Cooperation under Mutiple Vertical Interconnections. In 1. Helgoland Power and Energy Conference (HPEC): 24. Dresdener Kreis (S. 31-34) https://doi.org/10.15488/15895

Alferink, M., Reus, L., Goudarzi, F., Hofmann, L., & Michels, K. (2023). Optimization-Based Operation of Island Hybrid Power Systems: A Case Study in Suðuroy, Faroe Islands. In 7th International Hybrid Power Plants & Systems Workshop (HYB23) (S. 1-8). IEEE. https://doi.org/10.1049/icp.2023.1427

Bekker, I., & Hofmann, L. (2023). Communication-free control concept for operating a low voltage island grid. In IEEE PES Innovative Smart Grid Technologies - Asia, ISGT Asia 2023 (2023 IEEE PES Innovative Smart Grid Technologies - Asia, ISGT Asia 2023). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISGTAsia54891.2023.10372805

Goudarzi, F., Reus, L., & Hofmann, L. (2023). Efficient modeling of DFIG- and FSC-based wind turbines for frequency stability analysis. Elektrotechnik und Informationstechnik, 140(2), 338–351. https://doi.org/10.1007/s00502-023-01128-2

Hebbeln, I., Rose, M., Hübner, M., & Hofmann, L. (2023). Modelling the Required State of Charge of a Battery Emergency Power Supply for Temporary Islanded Grid Sections with Decentralized Generation. In D. Schulz (Hrsg.), NEIS 2023 : Conference on Sustainable Energy Supply and Energy Storage Systems (S. 101-107). VDE Verlag GmbH.

Hebbeln, I., Rose, M., Hübner, M., & Hofmann, L. (2023). Optimal Grid Sections for a Temporary Emergency Power Supply Operating in Islanded Grid Mode. In Proceedings of 2023 IEEE PES Innovative Smart Grid Technologies Europe, ISGT EUROPE 2023 (IEEE PES Innovative Smart Grid Technologies Conference Europe). IEEE Computer Society. https://doi.org/10.1109/ISGTEUROPE56780.2023.10408113

Herrmann, M., Alkemper, M., & Hofmann, L. (2023). Analysis of Onshore Synthetic Inertia and Primary Control Reserve Contributions of Alternating Current-Side Meshed Offshore Grids with Voltage-Source Converter and Diode Rectifier Unit High-Voltage Direct Current Connections. Energies, 16(18), Artikel 6700. https://doi.org/10.3390/en16186700

Majumdar, N., Sarstedt, M., & Hofmann, L. (2023). Distribution Grid Power Flexibility Aggregation at Multiple Interconnections between the High and Extra High Voltage Grid Levels. In M. T. Sandikkaya, & O. Usta (Hrsg.), Proceedings - 2023 IEEE PES GTD International Conference and Exposition, GTD 2023 (S. 303-309). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/GTD49768.2023.00084

Majumdar, N., Kengkat, P., Yermekbayev, R., & Hofmann, L. (2023). Reliability Parameterised Distribution Grid Flexibility Aggregation Considering Renewable Uncertainties. In 58th International Universities Power Engineering Conference, UPEC 2023 (International Universities Power Engineering Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/UPEC57427.2023.10294524

Peters, L., Kutzner, R., Schäfer, M., & Hofmann, L. (2023). Ability of Black-Box Optimisation to Efficiently Perform Simulation Studies in Power Engineering. Acta Mechanica et Automatica, 17(2), 292-302. https://doi.org/10.2478/ama-2023-0034

Stark, L., Sarstedt, M., & Hofmann, L. (2023). Determination of Interdependent Feasible Operation Regions at Multiple TSO-DSO Interconnections. In Proceedings of 2023 IEEE PES Innovative Smart Grid Technologies Europe, ISGT EUROPE 2023 (S. 1-6). (IEEE PES Innovative Smart Grid Technologies Conference Europe). https://doi.org/10.1109/ISGTEUROPE56780.2023.10408712

Strunk, R., Reus, L., Hofmann, L., & Mertens, A. (2023). Fixed-Frequency Operation of an Island Grid with Multiple Grid-Forming Inverters and GPS-Based Synchronisation. In 7th International Hybrid Power Plants & Systems Workshop (HYB23) (S. 30-36). (IET Conference Proceedings). https://doi.org/10.1049/icp.2023.1430

Wingenfelder, M., Sarstedt, M., & Hofmann, L. (2023). Approach on Active Distribution Grid Planning By Using the Feasible Operation Region. In 2023 IEEE PES Innovative Smart Grid Technologies Europe (ISGT EUROPE) (IEEE PES Innovative Smart Grid Technologies Conference Europe). https://doi.org/10.1109/ISGTEUROPE56780.2023.10408253

Wingenfelder, M., & Hofmann, L. (2023). Comparison of Adapted PSO Methods Regarding the Determination of Grid Operation Constraints in the Vertical Active and Reactive Power Plane. In Proceedings 2023 IEEE PES Innovative Smart Grid Technologies - Asia, ISGT Asia 2023 (IEEE PES Innovative Smart Grid Technologies). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISGTAsia54891.2023.10372677

Wingenfelder, M., Frank, D., Hofmann, L., & Reese, C. (2023). Harmonic and Supraharmonic Emissions of Fast Charging Infrastructure: Field Measurements in LV Grids. In 27th International Conference on Electricity Distribution (CIRED 2023) (6 Aufl., Band 2023, S. 140-144). (IET Conference Proceedings). IEEE. https://doi.org/10.1049/icp.2023.0261

Wingenfelder, M., & Hofmann, L. (2023). Kipppunktanalyse von vorstädtischen Netzstrukturen hinsichtlich des Integrationspotentials an Ladeinfrastruktur anhand des Gleichzeitigkeitsfaktors für Elektromobilität. In Towards the New Normal in Mobility: Technische und betriebswirtschaftliche Aspekte (1 Aufl., Band 14, S. 267 - 286). Springer Gabler. https://doi.org/10.1007/978-3-658-39438-7_17

Bekker, I., & Hofmann, L. (2022). Extended secondary control with grid-forming inverters for communication-free island operation. In H. Rashid (Hrsg.), 2022 IEEE International Conference on Power Systems Technology: Embracing Advanced Technology in Power and Energy Systems for Sustainable Development, POWERCON 2022 Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/POWERCON53406.2022.9930076

Bekker, I., Hofmann, L., & Mertens, A. (2022). Secondary control with grid-forming inverters for an island grid restoration approach without communication. Electric Power Systems Research, 213, Artikel 108498. https://doi.org/10.1016/j.epsr.2022.108498

Hebbeln, I., Rose, M., Hübner, M., & Hofmann, L. (2022). Potential of electric vehicles to support a temporary local emergency power back-up supply in case of a large-scale blackout. In CIRED Porto Workshop 2022: E-Mobility and Power Distribution Systems (S. 586-590). Institution of Engineering and Technology. https://doi.org/10.1049/icp.2022.0776

Herrmann, M., & Hofmann, L. (2022). NSON II - Kosteneffiziente Anbindung und internationale Integration von Offshore Windenergie in der Nordsee: AP2: Anlagen- und Systemregelung; AS 2.3: Entwicklung von Regelungskonzepten zum Betrieb von HGÜ-Umrichterstationen in drehstromseitig vermaschten Offshore-Netzen. Fraunhofer-Verlag. https://doi.org/10.24406/publica-677

Leveringhaus, T., Kluß, L., Bekker, I., & Hofmann, L. (2022). Solving Combined Optimal Transmission Switching and Optimal Power Flow sequentially as convexificated Quadratically Constrained Quadratic Program. Electric Power Systems Research, 212, Artikel 108534. https://doi.org/10.1016/j.epsr.2022.108534

Majumdar, N., Sarstedt, M., Kluß, L., & Hofmann, L. (2022). Linear Optimization Based Distribution Grid Flexibility Aggregation Augmented With OLTC Operational Flexibilities. IEEE ACCESS, 10, 77510-77521. https://doi.org/10.1109/ACCESS.2022.3193387

Mirzadeh, M., Strunk, R., Matter, S., Bekker, I., Munderloh, M., Erckrath, T., Hofmann, L., & Mertens, A. (2022). A Rule-based Concept for a Bottom-up Multi-Master Black Start of an Inverter-Dominated Low-Voltage Cell. In 2022 IEEE 13th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2022 Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PEDG54999.2022.9923220

Peters, L., Gobel, V., Schoof, S., Kutzner, R., Schafer, M., & Hofmann, L. (2022). Radial Basis Function Approximation in Gas Turbine Overspeed Analysis. In D. Mehdi, R. Outbib, A. El-Hajjaji, E. Busvelle, & H. Noura (Hrsg.), 2022 10th International Conference on Systems and Control, ICSC 2022 (S. 108-113). (International Conference on Systems and Control). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICSC57768.2022.9993920

Sarstedt, M., & Hofmann, L. (2022). Monetarization of the Feasible Operation Region of Active Distribution Grids based on a Cost-Optimal Flexibility Disaggregation. IEEE Access, 10, 5402-5415. https://doi.org/10.1109/ACCESS.2022.3140871

Tróndheim, H. M., Hofmann, L., Gartmann, P., Quitmann, E., Leth Bak, C., Faria Da Silva, F., Nielsen, T., & Niclasen, B. A. (2022). Frequency and Voltage Stability Towards 100% Renewables in Suðuroy, Faroe Islands. Cigre Science & Engineering, 2022(25).

Wieckhorst, L., Wingenfelder, M., & Hofmann, L. (2022). Influence of Electric Vehicle AC-Chargers on the Resonance Behavior of Domestic Distribution Grids. In NEIS 2022; Conference on Sustainable Energy Supply and Energy Storage Systems (S. 1-5). VDE Verlag GmbH. https://ieeexplore.ieee.org/document/10048091

Wingenfelder, M., & Hofmann, L. (2022). Bestimmung der maximal zulässigen Wirkleistungssteigerungen in exemplarischen vorstädtischen Netzstrukturen. In Dresdener Kreis 2022, Fachtagung der TU-Dresden, der Leibniz Universität Hannover, der Universität Magdeburg und der Gesamthochschule Duisburg: Elektroenergieversorgung

Blaufuß, C., & Hofmann, L. (2021). Einbindung netzdienlicher Betriebsweisen dezentraler Erzeugungsanlagen in die rechnergestützte Netzoptimierung zur Minimierung des Netzausbaubedarfs. Elektrotechnik und Informationstechnik, 138(8), 538-546. https://doi.org/10.1007/s00502-021-00938-6

Buchholz, S., Tiemann, P. H., Wolgast, T., Scheunert, A., Gerlach, J., Majumdar, N., Breitner, M., Hofmann, L., Nieße, A., & Weyer, H. (2021). A sketch of unwanted gaming strategies in flexibility provision for the energy system. In 16th International Conference on Wirtschaftsinformatik, Pre-Conference Community Workshop Energy Informatics and Electro Mobility ICT (S. 33-39). BIS-Verl. der Carl-von-Ossietzky-Univ. http://oops.uni-oldenburg.de/5084/

Gerster, J., Sarstedt, M., Veith, E., Hofmann, L., & Lehnhoff, S. (2021). Comparison of random sampling and heuristic optimization-based methods for determining the flexibility potential at vertical system interconnections. 1-9. Beitrag in 11th IEEE PES Innovative Smart Grid Technologies Europe 2021, Espoo, Finnland. https://doi.org/10.1109/ISGTEurope52324.2021.9640108

Gerster, J., Sarstedt, M., Veith, E., Lehnhoff, S., & Hofmann, L. (2021). Pointing out the Convolution Problem of Stochastic Aggregation Methods for the Determination of Flexibility Potentials at Vertical System Interconnections. 1-7. Beitrag in The Eleventh International Conference on Smart Grids, Green Communications and IT Energy-aware Technologies - ENERGY 2021, Valencia, Spanien. https://www.thinkmind.org/index.php?view=article&articleid=energy_2021_3_10_30006

Goudarzi, F., & Hofmann, L. (2021). A Combined RMS Simulation Model for DFIG-Based and FSC-Based Wind Turbines and Its Initialization. Energies, 14(23), Artikel 8048. https://doi.org/10.3390/en14238048

Herrmann, M., & Hofmann, L. (2021). Enhancement of a Control Concept for Parallel HVDC Link Operation to Increase Flexibility for Offshore Wind Park Grid Connections. In 2021 12th International Renewable Energy Congress (IREC) ( International Heat Transfer Conference). https://doi.org/10.1109/irec52758.2021.9624882

Herrmann, M., & Hofmann, L. (2021). NSON II - Kosteneffiziente Anbindung und internationale Integration von Offshore Windenergie in der Nordsee: AP2: Anlagen- und Systemregelung; AS 2.2: Entwicklung von Regelungskonzepten zum Parallelbetrieb von HGÜ-Umrichterstationen. http://publica.fraunhofer.de/dokumente/N-644047.html

Huisinga, H., & Hofmann, L. (2021). Strukturanalyse des mit dem Erweiterten Knotenpunktverfahren formulierten Differential-algebraischen Gleichungssystems. At-Automatisierungstechnik, 69(5), 353-363. https://doi.org/10.1515/auto-2021-0001

Kluß, L., Leveringhaus, T., Sarstedt, M., & Hofmann, L. (2021). Inclusion of Network Configurations in a Security Constrained Optimal Power Flow as a Mixed-Integer Quadratically Constrained Quadratic Program. In D. Schulz (Hrsg.), NEIS 2021 - Conference on Sustainable Energy Supply and Energy Storage Systems (S. 236-241). (NEIS 2021 - Conference on Sustainable Energy Supply and Energy Storage Systems). VDE Verlag GmbH. https://ieeexplore.ieee.org/document/9698273

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). Potentials and Technical Requirements for the Provision of Ancillary Services in Future Power Systems with Distributed Energy Resources. In D. Schulz (Hrsg.), NEIS 2021 - Conference on Sustainable Energy Supply and Energy Storage Systems (S. 53-60). VDE Verlag GmbH. https://ieeexplore.ieee.org/document/9698166

Majumdar, N., Sarstedt, M., & Hofmann, L. (2021). A Fast and Accurate determination of the Feasible Operating Region for Aggregation of Distribution Grid Potentials using Linearized Optimization. Beitrag in Dresdener Kreis 2021, Dresden, Deutschland.

Majumdar, N., Sarstedt, M., Leveringhaus, T., & Hofmann, L. (2021). Linearized Optimization for Reactive Power Dispatch at Transmission Grid Level considering Discrete Transformer Tap-Settings. In 13th IEEE PES Asia-Pacific Power and Energy Engineering Conference 2021 (APPEEC) (Asia-Pacific Power and Energy Engineering Conference, APPEEC; Band 2021-November). IEEE. https://doi.org/10.1109/appeec50844.2021.9687678

Neufeld, A., Schütte, N., & Hofmann, L. (2021). Anwendung und Erweiterung der Zuweisung von Oberschwingungsstrompegeln für die Netzanschlussnehmer gemäß VDE AR-N 4130. In ETG-Kongress 2021 - Von Komponenten bis zum Gesamtsystem für die Energiewende (ETG-Kongress 2021)

Sarstedt, M., Leveringhaus, T., Kluß, L., & Hofmann, L. (2021). Comparison of Convexificated SQCQP and PSO for the Optimal Transmission System Operation based on Incremental In-Phase and Quadrature Voltage Controlled Transformers. In D. Schulz (Hrsg.), NEIS 2021: Conference on Sustainable Energy Supply and Energy Storage Systems (S. 113-120). VDE Verlag GmbH. https://ieeexplore.ieee.org/document/9698254

Sarstedt, M., Kluß, L., Gerster, J., Meldau, T., & Hofmann, L. (2021). Survey and Comparison of Optimization-Based Aggregation Methods for the Determination of the Flexibility Potentials at Vertical System Interconnections. ENERGIES, 14(3), Artikel 687. https://doi.org/10.3390/en14030687

Schäkel, N., & Hofmann, L. (2021). Einbindung von Erzeugungsanlagen mit Vollumrichter in das Überlagerungsverfahren zur Kurzschlussstromberechnung. Elektrotechnik und Informationstechnik, 138(8), 567-582. https://doi.org/10.1007/s00502-021-00937-7

Schäkel, N., & Hofmann, L. (2021). Exakte und genäherte Kurzschlussstromberechnung in Netzen mit Vollumrichteranlagen. At-Automatisierungstechnik, 69(5), 389-400. https://doi.org/10.1515/auto-2021-0036

Schütte, N., Neufeld, A., Hofmann, L., Dommerque, R., & Nazemi, M. (2021). Harmonic Emission Limit Allocation Using VDE AR-N 4130: Application and Adaptation of Experiences from IEC TR 61000-3-6. In 2021 56th International Universities Power Engineering Conference: Powering Net Zero Emissions, UPEC 2021 - Proceedings https://doi.org/10.1109/UPEC50034.2021.9548275

Thiele, J., Wiehe, J., Gauglitz, P., Pape, C., Lohr, C., Bensmann, A. L., Hanke-Rauschenbach, R., Kluß, L., Hofmann, L., Kraschewski, T., Breitner, M. H., Demuth, B., Vayhinger, E., Heiland, S., & von Haaren, C. (2021). Konkretisierung von Ansatzpunkten einer naturverträglichen Ausgestaltung der Energiewende, mit Blick auf strategische Stellschrauben: Naturverträgliche Ausgestaltung der Energiewende. Schriftenreihe des Bundesamtes für Naturschutz, Naturschutz und biologische Vielfalt. https://doi.org/10.19217/skr614

Trentini, R., Hofmann, L., & Kutzner, R. (2021). Modeling of regulated power systems based on the Electromechanical Energy Approach for assessing small signal stability. In 3rd International Conference on Electrical, Communication and Computer Engineering, ICECCE 2021 (International Conference on Electrical, Communication and Computer Engineering, ICECCE). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICECCE52056.2021.9514177

Wolter, M., & Hofmann, L. (2021). Ausgewählte Fragestellungen der Modellierung von elektrischen Energieversorgungssystemen: Zum 80. Geburtstag von Prof. Dr.-Ing. habil. Bernd R. Oswald. At-Automatisierungstechnik, 69(5), 351-352. https://doi.org/10.1515/auto-2021-0048

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., ... Weyer, H. (2021). SiNED-ancillary services for reliable power grids in times of progressive German energiewende and digital transformation. In ETG-Kongress 2021: Von Komponenten bis zum Gesamtsystem fur die Energiewende (S. 148-153). VDE Verlag GmbH. https://ieeexplore.ieee.org/document/9469609

Herrmann, M., & Hofmann, L. (2020). Ensuring Short-term Voltage Stability in Extensive Grids With High Power Electronic Penetration by Applying Grid Forming Controls. In 2020 International Conference on Smart Grids and Energy Systems (SGES) (S. 24-29). Artikel 9364603 https://doi.org/10.1109/SGES51519.2020.00012

Hofmann, L. (2020). Unified fault matrix method for the calculation of shunt and series faults in power systems with complete duality of shunt and series fault matrices. Electric power systems research, 189, Artikel 106556. https://doi.org/10.1016/j.epsr.2020.106556

Huisinga, H. H., & Hofmann, L. (2020). Consistent solution for electric power system simulations with inconsistent initial values. In 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 IEEE Computer Society Press. https://doi.org/10.1109/EEEIC/ICPSEurope49358.2020.9160814

Leveringhaus, T., & Hofmann, L. (2020). Detailed reasoning and derivation of a convexificated quadratic approximation approach for the Security Constrained Optimal Power Flow. In Proceedings - 2020 International Conference on Smart Grids and Energy Systems, SGES 2020 (S. 261-266). Artikel 9364447 IEEE Computer Society. https://doi.org/10.1109/sges51519.2020.00053

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. (2020). NSON II: Next Steps in Economical Connection and International Integration of Offshore Wind Energy in the North Seas. Beitrag in 19th Wind Integration Workshop. https://doi.org/10.24406/publica-fhg-410380

Mende, D., Stock, D. S., & Hofmann, L. (2020). Superposition-based Modelling of Series FACTS in Nonlinear Mathematical Optimized Grid Operation. In 2020 IEEE PES Innovative Smart Grid Technologies Europe: Smart Grids: key enabler of a green power system (S. 359-363). Artikel 9248819 IEEE. https://doi.org/10.1109/isgt-europe47291.2020.9248819

Neufeld, A., Alkemper, M. J., Schäkel, N., & Hofmann, L. (2020). On the Influence of Time Delay Modelling in Grid-Connected Converters for Harmonic Studies. In 2020 IEEE 11th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020 (S. 46-50) https://doi.org/10.1109/pedg48541.2020.9244443

Sarstedt, M., Kluß, L., Dokus, M., Gerster, J., & Hofmann, L. (2020). Simulation of Hierarchical Multi-Level Grid Control Strategies. In Proceedings 2020 International Conference on Smart Grids and Energy Systems (SGES 2020) (S. 175-180). Artikel 9364631 IEEE Computer Society. https://doi.org/10.1109/SGES51519.2020.00038

Schäkel, N., Neufeld, A., & Hofmann, L. (2020). Hybrid PLL Structure for Improvement of the Dynamic Performance of Grid-Connected Converters. In NEIS 2020: Conference on Sustainable Energy Supply and Energy Storage Systems (S. 93-98). VDE Verlag GmbH. https://ieeexplore.ieee.org/document/9273341

Schäkel, N., Neufeld, A., & Hofmann, L. (2020). On the Direct Voltage Control Concept of Grid Connected Power Converters. In 2020 IEEE 11th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020 (S. 143-148) https://doi.org/10.1109/pedg48541.2020.9244437

Stock, D. S., Harms, Y., Mende, D., & Hofmann, L. (2020). Robust nonlinear mathematical transmission expansion planning based on German electricity market simulation. Electric power systems research, 189, Artikel 106685. https://doi.org/10.1016/j.epsr.2020.106685

Blaufuß, C. J., & Hofmann, L. (2019). Linear Optimization of Reinforcements in Medium Voltage Grids in Respect to Increasing Load Behavior. In 2019 IEEE PES Asia-Pacific Power and Energy Engineering Conference, APPEEC 2019: Proceedings (S. 1-5). Artikel 8994672 (Asia-Pacific Power and Energy Engineering Conference; Band 2019-December). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/appeec45492.2019.8994672

Breithaupt, T. J., Leveringhaus, T., & Hofmann, L. (2019). Heuristic solution of a joint electric control reserve and wholesale market model. International Journal of Modeling, Simulation, and Scientific Computing, 10(2), 1940001-1 - 1940001-20. Artikel 1940001. https://doi.org/10.1142/s1793962319400014

Kalla, M. B., Korolova, O., Neufeld, A., Hofmann, L., & Ponick, B. (2019). Calculating frequency responses of synchronous machines using MIMO transfer functions. In 2019 International Aegean Conference on Electrical Machines and Power Electronics, ACEMP 2019 and 2019 International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2019: Proceedings (S. 132-138). (Proceedings of the International Conference on Optimisation of Electrical and Electronic Equipment). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/acemp-optim44294.2019.9007207

Lager, T. H., & Hofmann, L. (2019). Advanced Short-Circuit Current Calculation for Doubly-Fed Induction Generator Based Wind Turbines According to IEC 60909. In 2019 IEEE PES Innovative Smart Grid Technologies Europe, ISGT-Europe 2019: Proceedings (S. 1-5). Artikel 8905579 Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/isgteurope.2019.8905579

Lager, T., & Hofmann, L. (2019). Improvement of the Consideration of Short-Circuit Current Contributions from Doubly-Fed Induction Generator Based Wind Turbines For Short-Circuit Current Calculation According to IEC 60909. In 2019 IEEE Milan PowerTech: Proceedings (S. 1-6). Artikel 8810607 IEEE. https://doi.org/10.1109/ptc.2019.8810607

Neufeld, A., Heide, D., & Hofmann, L. (2019). Calculation of Series Resonance Frequencies in Electrical Grids Using Resonance Mode Analysis. In 2019 IEEE PES Asia-Pacific Power and Energy Engineering Conference, APPEEC 2019: Proceedings (S. 1-4). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/appeec45492.2019.8994810

Neufeld, A., Schäkel, N., Hofmann, L., & Lösing, M. (2019). Probabilistic Calculation of Harmonic Voltages in Transmission Grids with Varying Shares of Underground Cables. In Cigré Symposium Aalborg - 2019 https://e-cigre.org/publication/SYMP_AAL_2019-symposium-aalborg-2019

Neufeld, A., Alkemper, M. J., Schäkel, N., & Hofmann, L. (2019). Simulative Calculation of the Grid-Connected Inverter Impedance for Harmonic Studies. In 2019 54th International Universities Power Engineering Conference, UPEC 2019: Proceedings (S. 1-5). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/upec.2019.8893508

Pawellek, A., & Hofmann, L. (2019). Potentiale von HGÜ-Systemen im internationalen Netzregelverbund. In L. Hofmann (Hrsg.), Dresdener Kreis 2019: 20. Dresdener Kreis Elektroenergieversorgung vom 27. bis 28. März 2019 in Hannover Institutionelles Repositorium Leibniz Universität Hannover. https://doi.org/10.15488/9412

Pawellek, A., & Hofmann, L. (2019). Utilization of HVDC-Systems in the International Grid Control Cooperation. In 2019 IEEE Milan PowerTech: Proceedings (S. 1-6). Artikel 8810806 Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ptc.2019.8810806

Rüberg, S., Sewdien, V., Rueda Torres , J. L., Rakhshani, E., Wang, D., Tuinema, B., Farrokhseresht, N., Gusain, D., Perilla, A., Mola Jimenez, J., Longás Viejo, C., Breithaupt, T. J., Goudarzi, F., Meyer, K. R., Stallmann, F., Herrmann, M., Hofmann, L., Mertens, A., Hennig, T., ... Denis, G. (2019). Deliverable D1.6 Demonstration of Mitigation Measures and Clarification of Unclear Grid Code Requirements. https://www.h2020-migrate.eu/_Resources/Persistent/a7e3d4424f6f749e419ddac011419e7a0aa5f576/D1.6%20-%20Demonstration%20of%20Mitigation%20Measures%20and%20Clarification%20of%20Unclear%20Grid%20Code%20Requirements%20-%20final.pdf

Sarstedt, M., Garske, S., Blaufuß, C. J., & Hofmann, L. (2019). Modelling of Integrated Transmission and Distribution Grids based on Synthetic Distribution Grid Models. In 2019 IEEE Milan PowerTech, PowerTech 2019: Proceedings (S. 1-6). Artikel 8810823 Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ptc.2019.8810823

Sarstedt, M., Dokus, M., Gerster, J., Himker, N., Hofmann, L., Lehnhoff, S., & Mertens, A. (2019). Standardized evaluation of multi-level grid control strategies for future converter-dominated electric energy systems. Automatisierungstechnik, 67(11), 936 - 957. https://doi.org/10.1515/auto-2019-0061

Schäkel, N., Neufeld, A., & Hofmann, L. (2019). Impact of Enhanced Synchronization Techniques of Wind Power Plants on the Short-Circuit Current. In 2019 IEEE PES Asia-Pacific Power and Energy Engineering Conference, APPEEC 2019: Proceedings (S. 1-5). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/appeec45492.2019.8994723

Trentini, R., Kutzner, R., Hofmann, L., Oliveira, J. D., & Nied, A. (2019). On the Electromechanical Energy Approach: A Novel Modeling Method for Power Systems Stability Studies. IEEE Transactions on Power Systems, 34(3), 1771-1779. Artikel 8576590. https://doi.org/10.1109/tpwrs.2018.2887001

Blaufuß, C. J., & Hofmann, L. (2018). Methodik zur Optimierung des Netzausbaus in beanspruchten Verteilnetzen. Postersitzung präsentiert bei ETG-CIRED-Workshop 2018 (D-A-CH): Innovationen im Verteilnetz, Berlin, Deutschland.

Garske, S., Sarstedt, M., & Hofmann, L. (2018). Bewertungsmethodik für die Anforderungen der Übertragungsnetzebene an die Blindleistungsbereitstellung der Verteilnetzebene. In 15. Symposium Energieinnovation https://www.tugraz.at/fileadmin/user_upload/Events/Eninnov2018/files/lf/Session_D3/536_LF_Garske.pdf

Hennig, T., & Hofmann, L. (2018). Hybrid AC/DC Post-Contingency Power-Flow Algorithm Considering Control Interaction of Asynchronous Area. IEEE Transactions on Power Delivery, 33(1), 340-348. Artikel 8002593. https://doi.org/10.1109/tpwrd.2017.2736420

Hofmann, L., & Mertens, A. (2018). Aggregierte Modelle für die Simulation von dynamischen Vorgängen in elektromechanischen Energiesystemen (Kurzform: AMSES): Abschlussbericht. TEWISS Verlag, TEWISS-Technik und Wissen GmbH.

Huisinga, H. H., & Hofmann, L. (2018). Aggregierte Modelle für die Simulation von dynamischen Vorgängen in elektromechanischen Energiesystemen: Zeitskalen-Modellierung zur effizienten Untersuchung von Wechselwirkungen in Elektroenergiesystemen. PZH Verlag, TEWISS - Technik und Wissen GmbH.

Huisinga, H. H., & Hofmann, L. (2018). Order reduction in electrical power systems using singular perturbation in different coordinate systems. COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 37(4), 1525 - 1534. https://doi.org/10.1108/COMPEL-08-2017-0360

Leveringhaus, T., Breithaupt, T., Garske, S., & Hofmann, L. (2018). Modelling of Sequential Optimal Power Flow by Piecewise Linear Convexificated Quadratic Approximations. In 2018 International Conference on Power System Technology, POWERCON 2018 - Proceedings (S. 87-92). Artikel 8601613 Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/powercon.2018.8601613

Neufeld, A., Schäkel, N., & Hofmann, L. (2018). Harmonic Resonance Analysis for Various Degrees of Cable Penetration in Transmission Grids. In 2018 53rd International Universities Power Engineering Conference (UPEC) (S. 1-5) https://doi.org/10.1109/upec.2018.8541878

Neufeld, A., Schäkel, N., & Hofmann, L. (2018). Resonanzuntersuchungen in Übertragungsnetzen mit unterschiedlichen Verkabelungsgraden. In 19. Dresdener Kreis 2018 (S. 5). https://doi.org/10.24352/UB.OVGU-2019-033

Pawellek, A., & Hofmann, L. (2018). Comparison of Methods for the Simulation of Dynamic Power Flows in the International Grid Control Cooperation. In 2018 IEEE Electronic Power Grid (eGrid) Artikel 8598698 IEEE. https://doi.org/10.1109/egrid.2018.8598698

Sarstedt, M., Garske, S., & Hofmann, L. (2018). Application of PSO-Methods for the Solution of the economic Optimal Reactive Power Dispatch Problem. In 2018 IEEE Electronic Power Grid (eGrid) Artikel 8598673 IEEE. https://doi.org/10.1109/egrid.2018.8598673

Schlömer, G., Garske, S., Gropengießer, M., & Hofmann, L. (2018). Abschätzung der Netzverluste von Verteilnetzbetreibern. EW – Magazin für die Energiewirtschaft, 117(6), 42-47.

Sewdien, V. N., Meijden, M. V. D., Breithaupt, T., Hofmann, L., Herwig, D., Mertens, A., Tuinema, B. W., & Torres, J. L. R. (2018). Effects of Increasing Power Electronics on System Stability: Results from MIGRATE Questionnaire. In 2018 International Conference and Utility Exhibition on Green Energy for Sustainable Development (ICUE) (S. 1-9). Artikel 8635602 (Proceedings of the Conference on the Industrial and Commercial Use of Energy, ICUE; Band 2018-October). IEEE. https://doi.org/10.23919/ICUE-GESD.2018.8635602

Stock, D. S., Sala, F., Berizzi, A., & Hofmann, L. (2018). Optimal Control of Wind Farms for Coordinated TSO-DSO Reactive Power Management. ENERGIES, 11(1), Artikel 173. https://doi.org/10.3390/en11010173, https://doi.org/10.15488/3371

Velasquez, J., Castro, F., Babazadeh, D., Lehnhoff, S., Kumm, T., Heuberger, D., Treydel, R., Lüken, T., Garske, S., & Hofmann, L. (2018). Co-simulation set-up for testing controller interactions in distribution networks. In 2018 Workshop on Modeling and Simulation of Cyber-Physical Energy Systems, MSCPES 2018 - Held as part of CPS Week, Proceedings (S. 1-6). Artikel 8405402 https://doi.org/10.1109/mscpes.2018.8405402

Walter, A., Wiehe, J., Schlömer, G. J., Hashemifarzad, A., Wenzel, T., Albert, I., Hofmann, L., zum Hingst, J., & von Haaren, C. (2018). Naturverträgliche Energieversorgung aus 100 % erneuerbaren Energien 2050. (BfN-Skripten; Band 501). Bundesamt für Naturschutz.

Akbulut, A., Becker, H., Mende, D., Stock, D. S., & Hofmann, L. (2017). Neighboring System as Black Start Source and Restoration Process based on the VSC-HVDC as Tie Line. In 2017 19th European Conference on Power Electronics and Applications: EPE 2017 ECCE Europe Artikel 8098993 Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/epe17ecceeurope.2017.8098993

Becker, H., Naranovich, A., Hennig, T., Akbulut, A., Mende, D., Stock, S., & Hofmann, L. (2017). System restoration using VSC-HVDC connected offshore wind power plant as black-start unit. In 2017 19th European Conference on Power Electronics and Applications, EPE 2017 ECCE Europe (S. P.1-P.8). Artikel 8099007 https://doi.org/10.23919/epe17ecceeurope.2017.8099007

Breithaupt, T., Leveringhaus, T., Rendel, T., & Hofmann, L. (2017). A MILP Approach for the Joint Simulation of Electric Control Reserve and Wholesale Markets. In F. De Rango, T. Oren, & M. S. Obaidat (Hrsg.), SIMULTECH 2017 - Proceedings of the 7th International Conference on Simulation and Modeling Methodologies, Technologies and Applications (S. 314-322) https://doi.org/10.5220/0006441203140322

Garske, S., Schloemer, G., & Hofmann, L. (2017). Evaluation of Reactive Power Management Strategies and Grid Loss Characteristics based on Generic Distribution Grid Models. In NEIS 2017; Conference on Sustainable Energy Supply and Energy Storage Systems (S. 1-6) https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8421824

Garske, S., Blaufuß, C., Sarstedt, M., & Hofmann, L. (2017). Reactive power management analyses based on generic distribution grid models. In 2017 IEEE PES Innovative Smart Grid Technologies Conference Europe, ISGT-Europe 2017 - Proceedings (S. 1-6) https://doi.org/10.1109/isgteurope.2017.8260248

Huisinga, H. H., & Hofmann, L. (2017). Order Reduction in Electric Power Systems using the Singular Perturbation Method under Application of the Extended Nodal Approach. Postersitzung präsentiert bei 19th International Symposium on Theoretical Electrical Engineering, Ilmenau, Deutschland.

Kluß, L., Schlömer, G., & Hofmann, L. (2017). High Temperature Superconductor Cables in the German High Voltage Grid. Beitrag in IEEE Power and Energy Student Summit, Nürnberg, Bayern, Deutschland.

Schlömer, G., & Hofmann, L. (2017). Application of a logistical optimization method to optimize existing low-voltage grids. In 2017 IEEE PES Innovative Smart Grid Technologies Conference Europe, ISGT-Europe 2017 - Proceedings (S. 1-6) https://doi.org/10.1109/isgteurope.2017.8260185

Schlömer, G., & Hofmann, L. (2017). Improved integration of Renewable Energies through comprehensive consideration of GIS-based Data in Grid-Planning of Low-Voltage Grids. In NEIS 2017 - Conference on Sustainable Energy Supply and Energy Storage Systems

Schlömer, G., Blaufuß, C., & Hofmann, L. (2017). Modelling of Low-Voltage Grids with the Help of Open Data. In NEIS Conference 2016 (S. 21-25)

Becker, H., Hennig, T., Akbulut, A., Mende, D., & Hofmann, L. (2016). Netzwiederaufbaukonzepte: Mögliches Zusammenspiel zwischen Windenergieanlagen und thermischen Kraftwerken. VGB PowerTech, 10, 57-62.

Blank, M., Blaufuß, C., Glötzel, M., Minnemann, J., Nieße, A., Pothen, F., Reinhold, C., Schwarz, J. S., Stahlecker, K., Wille, F., Witt, T., Rendel, T., Eggert, F., Engel, B., Geldermann, J., Hofmann, L., Hübler, M., Lehnhoff, S., Paech, N., & M., S. (2016). Whitepaper: Process for Simulation-based Sustainability Evaluation of Future Energy Scenarios. NEDS - Nachhaltige Energieversorgung Niedersachsen.

Blaufuß, C. J., & Hofmann, L. (2016). Auswirkungen struktureller Veränderungen auf den Blindleistungshaushalt. netzpraxis - Das Magazin für Energieversorgung, 55 (2016)(Heft 3-4), 62-67.

Blaufuß, C. J., & Hofmann, L. (2016). Auswirkungen struktureller Veränderungen auf den Blindleistungshaushalt und Strategien für ein zukünftiges Blindleistungsmanagement in Verteilnetzen. In Dresdener Kreis 2016

Breithaupt, T., Herwig, D., Hofmann, L., Mertens, A., Meyer, R., Farrokhseresht, N., Tuinema, B., Wang, D., Rueda Torres, J., Rüberg, S., & Sewdien, V. (2016). Report on systemic issues, MIGRATE (Massive InteGRATion of power Electronic devices) Deliverable 1.1.

Garske, S., Sarstedt, M., Hofmann, L., Velasquez, J., & Lehnhoff, S. (2016). Optimized reactive power management across different voltage levels on the example of medium-voltage grids. Journal of Energy Challenges and Mechanics. https://www.nscj.co.uk/JECM/PDF/3-3-3-Garske.pdf

Hennig, T., Mende, D., & Hofmann, L. (2016). Efficiency evaluation of offshore power systems with power electronics based on SiC technology. In IEEE PES APPEEC 2016 - 2016 IEEE PES Asia Pacific Power and Energy Engineering Conference (S. 634-639). Artikel 7779581 (Asia-Pacific Power and Energy Engineering Conference, APPEEC; Band 2016-December). https://doi.org/10.1109/appeec.2016.7779581

Hennig, T., Bonin, M. V., Rohrig, K., Stock, S., & Hofmann, L. (2016). Investigation on reliability-driven network expansions of offshore transmission systems. In 2016 IEEE Innovative Smart Grid Technologies - Asia, ISGT-Asia 2016 (S. 653-658). Artikel 7796462 https://doi.org/10.1109/isgt-asia.2016.7796462

Hofmann, L., Schlömer, G., Breithaupt, T., Reese, C., Röhrig, M., Fehre, L., Gallmeier, U., Rohrsen, J., Schlager, K., & Sühlmann-Faul, F. (2016). Demand Response – Das Auto als Speicher und virtuelles Kraftwerk.

Hofmann, L., Geldermann, J., Beck, H.-P., Eggert, F., Engel, B., Weyer, H., Horn, M., Lietz, F., Loges, H., Lühn, T., Schlömer, G., Schnieder, R., & Ahmels, J. (2016). Forschungsprojekt e-home Energieprojekt 2020 : Kurzfassung der wissenschaftlichen Projektergebnisse 2011 - 2016. Cuvillier Verlag.

Leveringhaus, T., & Hofmann, L. (2016). Optimal power flow comprising congestions and voltage management by global quadratic optimization of active and reactive power. In 2016 IEEE International Conference on Power System Technology, POWERCON 2016 (S. 1-6). Artikel 7753927 https://doi.org/10.1109/powercon.2016.7753927

Mende, D., Hennig, T., Akbulut, A., Becker, H., & Hofmann, L. (2016). Dynamic frequency support with DFIG wind turbines—A system study. In 2016 IEEE Electrical Power and Energy Conference, EPEC 2016 (S. 1-7). Artikel 7771694 https://doi.org/10.1109/epec.2016.7771694

Mende, D., Stock, S., Hennig, T., Löwer, L., & Hofmann, L. (2016). Effizientes Engpassmanagement im Spannungsfeld von technischer und wirtschaftlicher Optimierung. VDE-Kongress.

Mende, D., Stock, D. S., Hennig, T., Löwer, L., & Hofmann, L. (2016). Multiobjective optimization in congestion management considering technical and economic aspects. In IEEE PES APPEEC 2016 - 2016 IEEE PES Asia Pacific Power and Energy Engineering Conference (S. 1061-1066). Artikel 7779711 (Asia-Pacific Power and Energy Engineering Conference, APPEEC; Band 2016-December). https://doi.org/10.1109/appeec.2016.7779711

Pawellek, A., & Hofmann, L. (2016). Dynamisches Engpassmanagement für den Netzregelverbund. In VDE Kongress

Pawellek, A., & Hofmann, L. (2016). Simulation of dynamic power flows in the international grid control cooperation. In 2016 IEEE International Conference on Power System Technology, POWERCON 2016 Artikel 7753905 (2016 IEEE International Conference on Power System Technology, POWERCON 2016). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/POWERCON.2016.7753905

Popp, M., Huisinga, H. H., Hofmann, L., & Mathis, W. (2016). CoSimMA: A Modular Simulation Framework Based on CCM. In Advanced Aspects of Theoretical Electrical Engineering

Schlömer, G., & Hofmann, L. (2016). Eine Heuristik zur Umbauplanung von Niederspannungsnetzen ganzer Ortschaften. In Proceedings of the 14 Symposium Energieinnovation, Graz, Austria (S. 10-12)

Schlömer, G., & Hofmann, L. (2016). Optimization of grid expansion measures in low voltage grids using an integer linear optimization problem. In 2016 IEEE International Conference on Power System Technology, POWERCON 2016 (S. 1-6). Artikel 7753923 https://doi.org/10.1109/powercon.2016.7753923

Silveira, A., Trentini, R., Coelho, A., Kutzner, R., & Hofmann, L. (2016). Generalized minimum variance control under long-range prediction horizon setups. ISA transactions, 62, 325-332. https://doi.org/10.1016/j.isatra.2016.01.019

Stock, D. S., Venzke, A., Hennig, T., & Hofmann, L. (2016). Model predictive control for reactive power management in transmission connected distribution grids. In IEEE PES APPEEC 2016 - 2016 IEEE PES Asia Pacific Power and Energy Engineering Conference (S. 419-423). Artikel 7779538 https://doi.org/10.1109/appeec.2016.7779538

Stock, S., & Hofmann, L. (2016). Moderne Optimierungsverfahren zum Betrieb von Windparkclustern in Norddeutschland. In EnInnov 2016--14. Symposium Energie innovation

Stock, D. S., Venzke, A., Löwer, L., Rohrig, K., & Hofmann, L. (2016). Optimal reactive power management for transmission connected distribution grid with wind farms. In 2016 IEEE Innovative Smart Grid Technologies - Asia, ISGT-Asia 2016 (S. 1076-1082). Artikel 7796535 https://doi.org/10.1109/isgt-asia.2016.7796535

Trentini, R., Silveira, A., Bartsch, M. T., Kutzner, R., & Hofmann, L. (2016). On the design of stochastic RST controllers based on the generalized minimum variance. In 2016 UKACC International Conference on Control, UKACC Control 2016 (S. 1-6). Artikel 7737552 https://doi.org/10.1109/control.2016.7737552

Trentini, R., Silveira, A., Kutzner, R., & Hofmann, L. (2016). On the unrestricted horizon predictive control — A fully stochastic model-based predictive approach. In 2016 European Control Conference, ECC 2016 (S. 1322-1327). Artikel 7810472 https://doi.org/10.1109/ecc.2016.7810472

Trentini, R., Kutzner, R., & Hofmann, L. (2016). Power grid modeling based on the electromechanical energy approach aiming power systems stability studies. In 24th Mediterranean Conference on Control and Automation, MED 2016 (S. 943-948). Artikel 7535986 https://doi.org/10.1109/med.2016.7535986

Trentini, R., Kutzner, R., & Hofmann, L. (2016). State-space generalized minimum variance controller based PSS for damping of interarea modes. In C. Mavromoustakis, S. Louca, C. S. Pattichis, J. Georgiou, D. Michael, A. Paschalidou, E. Kyriacou, V. Vassiliou, C. Panayiotou, E. Kyriakides, G. Ellinas, G. Hadjichristofi, & C. Loizou (Hrsg.), Proceedings of the 18th Mediterranean Electrotechnical Conference: Intelligent and Efficient Technologies and Services for the Citizen, MELECON 2016 (S. 1-6). Artikel 7495350 https://doi.org/10.1109/melcon.2016.7495350

Trentini, R., Kutzner, R., & Hofmann, L. (2016). Stochastic speed governor based on the Generalized Minimum Variance Controller. In Tagungsband der (Band 43). (Tagungsband der).

Blank, M., Breithaupt, T., Bremer, J., Dammasch, A., Garske, S., Klingenberg, T., Koch, S., Lünsdorf, O., Nieße, A., Scherfke, S., Sonnenschein, M., & Hofmann, L. (2015). Work Group: Scenario Design. In Smart Nord Final Report (S. 21-30)

Breithaupt, T., Garske, S., Rendel, T., & Hofmann, L. (2015). Work Package 4.1 Interconnected System. In Smart Nord – Final Report (S. 169-183)

Hofmann, L., & Sonnenschein, M. (2015). Smart Nord—Final Report. Hartmann GmbH: Hannover, Germany.

Leveringhaus, T., & Hofmann, L. (2015). Combined and optimized redispatch management of multiple congestions and voltage deviations with active and reactive power based on AC-PTDFs with distributed slack. In 2015 IEEE Power and Energy Society General Meeting, PESGM 2015 (S. 1-5). Artikel 7286314 (IEEE Power and Energy Society General Meeting; Band 2015-September). https://doi.org/10.1109/pesgm.2015.7286314

Pawellek, A., & Hofmann, L. (2015). Erweiterte Konzepte Für Das Engpassmanagement Im Netzregelverbund. In Dresdener Kreis 2015

Schlömer, G., Blaufuß, C., & Hofmann, L. (2015). Niederspannungsnetzplanung mit rONT-Einsatz. In Dresdener Kreis 2015, Fachtagung der Technischen Universität Dresden, der Leibniz Universität Hannover, der Otto-von-Guericke-Universität Magdeburg und der Universität Duisburg-Essen: Elektroenergieversorgung

Schlömer, G., Reese, C., von Appen, H., & Hofmann, L. (2015). Technische Herausforderungen und Möglichkeiten zur Steuerung des Ladeverhaltens von Elektrofahrzeugen durch intelligente Ladestationen auf Basis der DIN IEC-61851. In Nachhaltige Energieversorgung und Integration von Speichern (S. 121-126)

Stock, S., Wildenhues, S., Henning, T., & Hofmann, L. (2015). Integration großer Mengen Windenergie in das elektrische Netz durch intelligente Netzanalyse und Clusterbetriebsführung. In 2. Fachkongress Zukünftige Stromnetze für Erneuerbare Energien

Trentini, R., Kutzner, R., Hofmann, L., Campos, A., & Neto, CF. (2015). Modeling, parameter estimation and state-space control of a steam turbine. In Proceedings of the 23rd ABCM International Congress on Mechanical Engineering, Rio de Janeiro

Becker, A., Lühn, T., Mohrmann, M., Schlömer, G., Schmidtmann, G., Schneider, D., Schnieder, R., Hofmann, L., Beck, H.-P., Geldermann, J., & Weyer, H. (2014). Netzausbauvarianten in Niederspannungsverteilnetzen - Regelbare Ortsnetztransformatoren in Konkurrenz zu konventionellen Netzausbaumaßnahmen.

Breithaupt, T., Rendel, T., & Hofmann, L. (2014). INES - Integrierte Netz- Und Energiemarktsimulation. In Dresdener Kreis 2014, Fachtagung Der TU-Dresden, Der Universität Hannover, Der Universität Magdeburg Und Der Gesamthochschule Duisburg: Elektroenergieversorgung, Leipzig, Deutschland,

Brenner, S., & Hofmann, L. (2014). Resonance Analysis of Offshore Wind Farms Using Doubly Feed Induction Generators under Application of Grid Transfiguration Approach. In International Wind Engineering Conference (IWEC) - Support Structures Electrical Systems -, Hanover, Germany

Fuchs, F., Dietz, R., Garske, S., Breithaupt, T., Mertens, A., & Hofmann, L. (2014). Challenges of grid integration of distributed generation in the interdisciplinary research project Smart Nord. In 2014 IEEE 5th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2014 (S. 1-7). Artikel 6878627 https://doi.org/10.1109/pedg.2014.6878627

Hennig, T., Löwer, L., Faiella, L. M., Stock, S., Jansen, M., Hofmann, L., & Rohrig, K. (2014). Ancillary services analysis of an offshore wind farm cluster--technical integration steps of a simulation tool. Energy Procedia, 53(C), 114-123. https://doi.org/10.1016/j.egypro.2014.07.220

Hofmann, L., Hauser, E., Binder, J., Stock, S., Knorr, K., & Rohrig, K. (2014). Systemstabilität mit und durch erneuerbare Energien. In FVEE-Jahrestagung

Leveringhaus, T., & Hofmann, L. (2014). Comparison of methods for state prediction: Power Flow Decomposition (PFD), AC Power Transfer Distribution factors (AC-PTDFs), and Power Transfer Distribution factors (PTDFs). In 2014 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC) (March Aufl., S. 1-6). (Asia-Pacific Power and Energy Engineering Conference, APPEEC). https://doi.org/10.1109/appeec.2014.7066183

Lühn, T., Schlömer, G., Schmidtmann, G., Lehde, B., Schmiesing, J., Hofmann, L., & Geldermann, J. (2014). Multi-criteria analysis of grid expansion concepts on the low voltage level. Zeitschrift für Energiewirtschaft, 38(3), 183-200.

Schlömer, G., Reese, C., & Hofmann, L. (2014). Methode zur automatisierten Bewertung des zukünftigen Ausbaubedarfs in der Niederspannungsebene unter Berücksichtigung verschiedener technischer Konzepte. In 13. Symposium Energieinnovation

Schlömer, G., & Hofmann, L. (2014). Planungswerkzeug Für Den Einsatz Regelbarer Ortsnetztransformatoren. netzpraxis - Das Magazin für Energieversorgung, Jg. 54, 65-67.

Schlömer, G., & Hofmann, L. (2014). Verwendung synthetischer Netzstrukturen zur Analyse des Netzausbaubedarfs in der Niederspannungsebene. In Dresdener Kreis 2014, Fachtagung der TU-Dresden, der Universität Hannover, der Universität Magdeburg und der Gesamthochschule Duisburg: Elektroenergieversorgung, Leipzig, Deutschland, 19.-20. März 2014

Beck, HP., Engel, B., Hofmann, L., Menges, R., Turek, T., & Weyer, H. (2013). Eignung von Speichertechnologien zum Erhalt der Systemsicherheit. FA, 43, 12.

Breithaupt, T., Garske, S., Rendel, T., & Hofmann, L. (2013). Methodological Approach for Integrated Grid and Market Simulation of Coherent Distribution and Transmission Systems. In EnviroInfo (S. 251-257)

Buchhagen, C., Pawellek, A., Hofmann, L., & Däumling, H. (2013). Analysis of an inductive medium voltage transformer with compensated first natural frequency. In 2013 IEEE Power Energy Society General Meeting (S. 1-5) https://doi.org/10.1109/PESMG.2013.6672839

Buchhagen, C., Däumling, H., & Hofmann, L. (2013). Extension of a Capacitance Model for Inductive Medium Voltage Transformers. In International Conference on Power System Transients 2013

Buchhagen, C., Hofmann, L., & Däumling, H. (2013). Influencing natural frequencies of inductive medium voltage transformers. In Dresdener Kreis 2013, Fachtagung der TU-Dresden, der Universität Hannover, der Universität Magdeburg und der Gesamthochschule Duisburg: Elektroenergieversorgung

Buchhagen, C., Fischer, M., Hofmann, L., & Däumling, H. (2013). Metrological determination of the frequency response of inductive voltage transformers up to 20 kHz. In 2013 IEEE Power Energy Society General Meeting (S. 1-5) https://doi.org/10.1109/PESMG.2013.6672835

Garske, S., Brenner, S., & Hofmann, L. (2013). Zuverlässigkeitsbetrachtung Und Zustandsanalyse Der Netzanbindung von Offshore Windparks. In Dresdener Kreis 2013, Fachtagung Der TU-Dresden, Der Universität Hannover, Der Universität Magdeburg Und Der Gesamthochschule Duisburg: Elektroenergieversorgung, Duisburg, Germany

Hofmann, L. (2013). Machbarkeitsstudie Zur Verknüpfung von Bahn- Und Energieleitungsinfrastrukturen. Elektrische Bahnen : EB ; Elektrotechnik im Verkehrswesen, (Heft 6-7), 392-400.

Hofmann, L., Stock, S., Faiella, M., & Löwer, L. (2013). Systemdienstleistungen Durch Windenergie. Windenergie Report Deutschland 2012, Fraunhofer IWES, Kassel, Fraunhofer Verlag,.

Mohrmann, M., Schlömer, G., & Hofmann, L. (2013). Development and application of a database for assessing the development needs of low-voltage networks. In Internationaler ETG-Kongress 2013: Energieversorgung auf dem Weg nach 2050 (139 Aufl.). (ETG-Fachbericht; Band 2013-November, Nr. 139). VDE Verlag GmbH.

Mohrmann, M., Schlömer, G., & Hofmann, L. (2013). Entwicklung und Anwendung einer Datenbank zur Bewertung des Ausbaubedarfs von Niederspannungsnetzen. In Internationaler ETG-Kongress

Mohrmann, M., Lehde, B., Hengelbrock, A., & Hofmann, L. (2013). Untersuchung der Veränderung von Haushaltslasten anhand von Messzeitreihen aus einem Forschungsprojekt. In Konferenz für Nachhaltige Energieversorgung und Integration von Speichern-NEIS 2013

Reese, C., & Hofmann, L. (2013). Synthetic three-phase load profiles. In 22nd International Conference and Exhibition on Electricity Distribution (CIRED 2013) (S. 1-4) https://doi.org/10.1049/cp.2013.1215

Beck, H.-P., Hofmann, L., Runge, K., Weyer, H., & Dietze, W. (2012). BMU-Studie Ökologische Auswirkungen von 380-kV-Erdleitungen und HGÜ-Erdleitungen - Zusammenfassung der wesentlichen Ergebnisse.

Breithaupt, T., Rendel, T., Rathke, C., & Hofmann, L. (2012). Modeling the reliability of large thermal power plants in an integrated grid and market model. In 2012 IEEE International Conference on Power System Technology (POWERCON) (S. 1-6) https://doi.org/10.1109/PowerCon.2012.6401366

Breuer, A., Merschel, F., Noe, M., Goldacker, W., Oswald, B. R., Hofmann, L., Schmidt, F., & Stemmle, M. (2012). Superconducting medium-voltage cables for urban power supply as an alternative scenario to 110 kV installations. In CIGRE Session 2012

Buchhagen, C., Hofmann, L., & Däumling, H. (2012). Analyse der Einflussgrößen auf die Eigenfrequenzen von Mittelspannungswandlern. In VDE Kongress 2012

Buchhagen, C., Reese, C., Hofmann, L., & Däumling, H. (2012). Calculation of the frequency response of inductive medium voltage transformers. In 2012 IEEE International Energy Conference and Exhibition (ENERGYCON) (S. 794-799)

Buchhagen, C., Hofmann, L., & Däumling, H. (2012). Compensation of the first natural frequency of inductive medium voltage transformers. In 2012 IEEE International Conference on Power System Technology (POWERCON) (S. 1-6) https://doi.org/10.1109/PowerCon.2012.6401406

Buchhagen, C., Reese, C., Hofmann, L., & Däumling, H. (2012). Determination of a capacitance model for inductive medium voltage transformers. In PES T D 2012 (S. 1-6) https://doi.org/10.1109/TDC.2012.6281501

Golshani, A., Khakpour, A., & Hofmann, L. (2012). Facts based fault current limiter utilization in HV grid. In 2012 25th IEEE Canadian Conference on Electrical and Computer Engineering (CCECE) (S. 1-6) https://doi.org/10.1109/CCECE.2012.6334818

Hofmann, L., Mohrmann, M., & Rathke, C. (2012). BMU-Studie Ökologische Auswirkungen von 380-kV-Erdleitungen und HGÜ-Erdleitungen - Bericht der Arbeitsgruppe Technik/Ökonomie.

Hofmann, L. (2012). Challenges and Solutions for Power Systems in the Future. In Transformer Life Management Conference

Hofmann, L., & Rathke, C. (2012, Jun 5). Machbarkeitsstudie zur Verknüpfung von Bahn-und Energieleitungsinfrastrukturen: Ergebnisbericht zu Los 1 "Technische Machbarkeit der Nutzung von Bahnstromtrassen für Freileitungs- und Kabeltrassen öffentlicher Energieversorgung". Region Hannover.

Leveringhaus, T., Breithaupt, T., & Hofmann, L. (2012). Physically based congestion management by powerflow superposition methods at optimal cost. In 2012 IEEE International Conference on Power System Technology (POWERCON) (S. 1-5)

Mathis, W., & Hofmann, L. (2012). Some Aspects of Modelling Wind Turbines and Aggregated Wind Turbines. In NDES 2012; Nonlinear Dynamics of Electronic Systems (S. 1-5)

Mohrmann, M., Lehde, B., Vielhauer, A., Bunk, M., Hofmann, L., & Engel, B. (2012). E-home Energieprojekt 2020. In CIRED Workshop 2012 Integration of Renewables into the Distribution Grid

Mohrmann, M., Reese, C., & Hofmann, L. (2012). Lastfluss- Und Kurzschlussberechnung Zur Betriebsoptimierung (TP 07). (S. 99-115).

Mohrmann, M., Reese, C., Hofmann, L., & Schmiesing, J. (2012). Untersuchung von Niederspannungsverteilnetzen anhand von synthetischen Netzstrukturen. In VDE-Kongress, Stuttgart, Deutschland (Band 5)

Rathke, C., Rendel, T., Breithaupt, T. J., Leveringhaus, T., & Hofmann, L. (2012). Influence of Offshore Wind Farms on the European Electricity Market and Transmission System. Beitrag in RAVE – International Conference 2012, Bremerhaven, Deutschland.

Reese, C., Buchhagen, C., & Hofmann, L. (2012). Enhanced method for voltage range controlled OLTC-equipped distribution transformers. In 2012 IEEE Power and Energy Society General Meeting (S. 1-8) https://doi.org/10.1109/PESGM.2012.6345416

Reese, C., Mohrmann, M., Hofmann, L., & John, M. (2012). Umsetzung eines Verfahrens zum Einsatz von Ortsnetztransformatoren als Messwandler im Netzbetrieb. In VDE Kongress

Reese, C., Buchhagen, C., & Hofmann, L. (2012). Voltage range as control input for OLTC-equipped distribution transformers. In PES T D 2012 (S. 1-6) https://doi.org/10.1109/TDC.2012.6281619

Rendel, T., Rathke, C., & Hofmann, L. (2012). Einfluss von Zusätzlicher Windeinspeisung Auf Den Energiehandel Und Die Netzbelastung in Europa. In VDE Kongress, Stuttgart, Deutschland,

Rendel, T., Rathke, C., Breithaupt, T., & Hofmann, L. (2012). Integrated grid and power market simulation. In 2012 IEEE Power and Energy Society General Meeting (S. 1-7) https://doi.org/10.1109/PESGM.2012.6345014

Rendel, T., Rathke, C., & Hofmann, L. (2012). Kraftwerkseinsatzplanung in einem integrierten Netz-und Strommarktsimulator.

Sonnenschein, M., Appelrath, HJ., Hofmann, L., Kurrat, M., Lehnhoff, S., Mayer, C., Mertens, A., Uslar, M., Nieße, A., & Tröschel, M. (2012). Dezentrale und selbstorganisierte koordination in smart grids. In VDE-Kongress 2012-Intelligente Energieversorgung der Zukunft

Stemmle, M., Merschel, F., Noe, M., Hofmann, L., & Hobl, A. (2012). Superconducting MV cables to replace HV cables in urban area distribution grids. In PES T D 2012 (S. 1-5) https://doi.org/10.1109/TDC.2012.6281443

Stock, S., Faiella, M., Löwer, L., Rohrig, K., Hofmann, L., & Knorr, K. (2012). Improving Grid Integration of Wind Energy Power Plants. In German Wind Energy Conference DEWEK (Band 1)

Weidner, J., & Hofmann, L. (2012). Machine Modelling for Transient Stability Analysis in Distribution Grids-A Comparison of Synchronous and Induction Machine Models in Medium and Low Voltage Grids. In SIMULTECH (S. 367-376)

Weidner, J., & Hofmann, L. (2012). Polar Coordinates for Space Phasors in Power System Transient and Small-Signal Stability Analysis. In NDES 2012; Nonlinear Dynamics of Electronic Systems (S. 1-4)

Amornvipas, C., & Hofmann, L. (2011). Allocating harmonic emission limits at HV and EHV based on IEC 61000–3–6 under consideration of global and future installations. In 2011 IEEE/PES Power Systems Conference and Exposition (S. 1-8) https://doi.org/10.1109/PSCE.2011.5772468

Appelrath, H.-J., Beck, H.-P., Hofmann, L., Huck, A., & Kurrat, M. (2011). Der netzorientierte Verbundbetrieb von dezentralen Anlagen im Niederspannungsnetz. In Internationaler ETG-Kongress 2011

Hofmann, L. (2011). Future Electric Power Systems: Challenges and Solutions. In International Symposium on High Voltage Engineering,

Hofmann, L. (2011). Offshore-Netzanschluss Und Offshore-Netze. In 2. VDI-Fachkonferenz: Offshore-Windenergieanlagen 2011

Hofmann, L. (2011). Systemdienstleistungen von Windparkclustern. In Kasseler Symposium Energie-Systemtechnik

Leveringhaus, T., & Hofmann, L. (2011). Optimized voltage and reactive power adjustment in power grids using the least-squares-method: Optimization of highly utilized power grids with stochastic renewable energy-sources. In 2011 International Conference on Power and Energy Systems (S. 1-6)

Lünsdorf, O., Sonnenschein, M., Mohrmann, M., Hofmann, L., [Unknown], G., Müller, P., & Kurrat, M. (2011). Möglichkeiten einer netzorientierten Betriebsweise zur weiteren Integration dezentraler Energieumwandlung auf Verteilnetzebene. In Internationaler ETG-Kongress 2011

Noe, M., Stemmle, M., Schmidt, F., Merschel, F., Hofmann, L., & Bock, J. (2011). Neue Mittel- statt konventioneller Hochspannungsnetze durch Hochtemperatur-Supraleitung.

Rathke, C., Rendel, T., & Hofmann, L. (2011). Entwicklung Eines Europäischen Strommarktsimulators. Elektrie Deutsche Elektrotechnik, Jg. 65, 85-87/2011, pp. 14-22, Verlag Dr. Heide Partner GmbH, September 2011, (Jg. 65, 85-87/2011,), 14-22.

Reese, C., & Hofmann, L. (2011). Analysis and reduction of effects of single-phase loads and generators on low voltage distribution grids. In 21st International Conference on Electricity Distribution

Rohrig, K., Knorr, K., & Hofmann, L. (2011). Transition to flexible renewable energy supply especially wind energy; Flexibilisierung der Erneuerbaren Energien insbesondere Windenergie. In VDE Kongress

Rohrig, K., Knorr, K., & Hofmann, L. (2011). Transition to flexible renewable energy supply especially wind energy; Flexibilisierung der Erneuerbaren Energien insbesondere Windenergie. Zeitschrift für Energiewirtschaft.

Stemmle, M., Merschel, F., Noe, M., Hofmann, L., & Hobl, A. (2011). Novel Grid Concepts for Urban Area Power Supply. In Superconductivity Centennial Conference EUCAS-ISEC-ICMC 2011 (SCC2011)

Weidner, J., & Hofmann, L. (2011). Statische und Transiente Stabilität in Arealnetzen. In Dresdener Kreis 2011, Fachtagung der TU-Dresden, der Universität Hannover, der Universität Magdeburg und der Gesamthochschule Duisburg: Elektroenergieversorgung, Hannover, 28.-29. März 2011

Weidner, J., & Hofmann, L. (2011). Statische Und Transiente Stabilität von Erzeugungsanlagen in Verteilnetzen. In VDE ETG Kongress 2011

Wolter, M., & Hofmann, L. (2011). Agentenbasiertes Energiemanagement zur Spannungshaltung in Verteilnetzen. At-Automatisierungstechnik, 59(3), 161-166. https://doi.org/10.1524/auto.2011.0908

Wolter, M., & Hofmann, L. (2011). General estimation of reactive power control of DG sources on voltages in distribution grids. In IEEE 2011 EnergyTech (S. 1-6) https://doi.org/10.1109/EnergyTech.2011.5948538

Wolter, M., & Hofmann, L. (2011). General estimation of the impact of additional DG sources on distribution grids. In 2011 IEEE Power and Energy Society General Meeting (S. 1-5) https://doi.org/10.1109/PES.2011.6039522

Amornvipas, C., & Hofmann, L. (2010). Resonance analyses in transmission systems: Experience in Germany. In IEEE PES General Meeting (S. 1-8) https://doi.org/10.1109/PES.2010.5588098

Brenner, S., Wolter, M., & Hofmann, L. (2010). Influence of Inverter Dominated Small Energy Producers on the Voltage Stability of Distribution Grids in Steady-State. In IASTED AsiaPES 2010

Leveringhaus, T., Wolter, M., & Hofmann, L. (2010). Scientific Analysis of Inter-TSO-Compensation-Algorithms by Physically-based Power Flow and Superposition Methods. In Proceedings of the Fourth IASTED Asian Conference on Power and Energy Systems: November 24 - 26, 2010, Phuket, Thailand - ACTA Press, 2010, 2010, Beitrag 701-089, S. 274-281 https://doi.org/10.2316/P.2010.701-089

Wolter, M., & Hofmann, L. (2010). Allocation of responsibility for congestions in transmission systems based on power flow decomposition. In IASTED AsiaPES 2010

Wolter, M., Guercke, H., Isermann, T., & Hofmann, L. (2010). Multi-agent based distributed power flow calculation. In IEEE PES General Meeting (S. 1-6) https://doi.org/10.1109/PES.2010.5589910

Mohrmann, M., Reese, C., & Hofmann, L. (2009). Tagungsband FTP 07 Lastfluss- Und Kurzschlussberechnung Zur Betriebsoptimierung. In 3. Symposium Des FEN

Reese, C., & Hofmann, L. (2009). Determination of load and generation composition in distribution grids. In 2009 IEEE/PES Power Systems Conference and Exposition (S. 1-7) https://doi.org/10.1109/PSCE.2009.4840127

Weidner, J., & Hofmann, L. (2009). Statische Stabilität Des Einmaschinenproblems. In 3. Symposium Des FEN

Wolter, M., Brenner, S., Isermann, T., & Hofmann, L. (2009). Application of adaptive agents in decentralized energy management systems for the purpose of voltage stability in distribution grids. In 41st North American Power Symposium (S. 1-5)

Wolter, M., Brenner, S., Isermann, T., & Hofmann, L. (2009). Application of adaptive agents in decentralized energymanagement systems for the purpose of voltage stability in distribution grids. In 41st North American Power Symposium, NAPS 2009 Artikel 5484076 (41st North American Power Symposium, NAPS 2009). https://doi.org/10.1109/NAPS.2009.5484076

Amornvipas, C., & Hofmann, L. (2008). Method for analyzing effect of switching operations on system resonant behavior. In 2008 13th International Conference on Harmonics and Quality of Power (S. 1-6) https://doi.org/10.1109/ICHQP.2008.4668758

Drews, A., Rathke, C., Siebert, M., Heinemann, D., Hühnerbein, B., Hofmann, L., Koch, H., Kunze, H., Hoppensack, HJ., & Lohrenscheit, H. (2008). Network of offshore wind farms connected by gas insulated transmission lines. In Proc. Eur. Wind Energy Conf. Exhibition

Hühnerbein, B., Reese, C., & Hofmann, L. (2008). Einfluss dezentraler Erzeuger auf die Energiequalität den Netzbetrieb und die Netztopologie. In Proc. 2008 VDE Kongress

Hühnerbein, B., Reese, C., & Hofmann, L. (2008). Stochastisches Lastmodell (TP 4). In Tagungsband Zum 2. Statusseminar Des FEN, Braunschweig, 29.-30. Mai 2008

Koch, H., Kunze, H., Pöhler, S., Hofmann, L., Rathke, C., & Müller, A. (2008). Gas Insulated Lines Reliable Power Transmission towards New Worldwide Challenges in Hydro and Wind Power Generation. In Cigre Session

Lange, B., Wolff, M., Mackensen, R., Rohrig, K., Braams, D., Valov, B., Heier, S., Hofmann, L., Rosin, M., Scholz, C., Könnemann, A., & Biermann, K. (2008). Operational control of wind farm clusters for transmission system operators. In European Wind Energy Conference and Exhibition 2008 (S. 1326-1348). (European Wind Energy Conference and Exhibition 2008; Band 3).

Rathke, C., Siebert, M., & Hofmann, L. (2008). Grid integration of offshore wind farms using gas-insulated transmission lines. In 7th International Workshop on Large Scale Integration of Wind Power and on Transmission Networks for Offshore Wind Farms

Wolter, M., & Hofmann, L. (2008). Steigerung Der Energieeffizienz. VDI Technik und Leben, (Ausgabe 2/2008).

Söder, L., Hofmann, L., Orths, A., Holttinen, H., Wan, Y. H., & Tuohy, A. (2007). Experience from wind integration in some high penetration areas. IEEE Transactions on Energy Conversion, 22(1), 4-12. https://doi.org/10.1109/TEC.2006.889604

Hofmann, L. (2003). Cable model with frequency dependent parameters calculated by using subconductors. European Transactions on Electrical Power, 13(1), 15-22.

Hofmann, L. (2003). Effiziente Berechnung von Ausgleichsvorgängen in ausgedehnten Elektroenergiesystemen. Shaker.

Hofmann, L. (2003). Series expansions for line series impedances considering different specific resistances, magnetic permeabilities, and dielectric permittivities of conductors, air, and ground. IEEE Transactions on Power Delivery, 18(2), 564-570. https://doi.org/10.1109/TPWRD.2003.810493

Mariscotti, A., & Hofmann, L. (2003). Discussion of "Series expansions for line series impedances considering different specific resistances, magnetic permeabilities, and dielectric permittivities of conductors, air, and ground". IEEE Transactions on Power Delivery, 18(4), 1592-1593. https://doi.org/10.1109/TPWRD.2003.817821

Hofmann, L., & Oswald, B. R. (2002). Analytic Subsystem Formulation for the Efficient Simulation of Electric Power Systems. In 14. Power Systems Computation Conference (PSCC), Sevilla, 2002

Hofmann, L. (2002). Effiziente Berechnung von Ausgleichsvorgängen Durch Analytische Teilsystembildung, Proceedings Workshop Im DFG-Schwerpunktprogramms ystemtheoretische Verfahren Zur Führung Transeuropäischer Energiesystemë (322 1059). In Dresdener Kreis 2002, Fachtagung Der TU-Dresden, Der Universität Hannover, Der Universität Magdeburg Und Der Gesamthochschule Duisburg: Elektroenergieversorgung, Wernigerode, 2002

Hofmann, L., & Oswald, BR. (2002). Line Model in the Time Domain Considering Frequency Dependent Parameters, Leakance and Corona. In Proceedings of the 14th PSCC (S. 1-7)

Hofmann, L., & Oswald, BR. (2001). Efficient simulation of the dynamic behaviour of large-scale electric power systems. Electrical engineering, 83(5-6), 307-311.

Hofmann, L., & Schneider, M. (2000). Transmission Line and Cable Impedances Calculated by Using Subconductors. In EEUG Meeting, Breslau, 2000

Hofmann, L. (1998). Modellierung von Freileitungen mit frequenzabhängigen Parametern im Kurzzeitbereich. VDI Verlag GmbH, Düsseldorf.

Hofmann, L. (1998). Neues Leitungsmodell mit frequenzabhängigen Parametern im Zeitbereich. Electrical engineering, 81(4), 225-232.

Hofmann, L. (1998). New transmission line model with frequency dependent parameters in the time domain. Electrical engineering, 81(4), 225-232.

Hofmann, L., & Oswald, B. R. (1996). Modelle von Freileitungen Und Kabeln Zur Berechnung von Transienten Vorgängen. In ETG-Fachbericht (S. 165-174). (Nr. 63)..

Hofmann, L., Oswald, BR., & Grabinski, H. (1996). Simulation of transients in power systems using a new transmission line model with frequency dependent parameters. In 12th Power Systems Computation Conference (S. 674-680). (PSCC, Dresden).

Hofmann, L. (1995). Modellierung von Hochspannungsleitungen mit frequenzabhangigen Parametern im Zustandsraum. Elektrie, 49(10), 379-393.

Hofmann, L. (1995). State Space Simulation of Transients Using a Transmission Line Model with Frequency Dependent Parameters. In EEUG Meeting, Hannover 13.-14. November, 1995

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