Publications

Prof. Dr.-Ing. Carsten Leu

Research focus 1:
Stressing of insulating materials and systems with high-voltage direct current (HVDC) and superimposed low- and medium-frequency voltage

• Gebhardt, F.; Leu, C.: Experimental measurements on the effect of superimposed voltage forms on high-voltage composite insulators, VDE-ETG Congress "From components to the overall system for the energy transition" 2021, Berlin | ISBN 978-3-8007-5549-3, E-Book: ISBN 978-3-8007-5550-9
• Leu, C.: Insulation coordination and design of equipment in AC and DC energy systems, 4th symposiumInsulation coordination and design of equipment in AC and DC energy systems 25/26 March 2021 Web conference
• Borvanov, S.; Leu, C.: Dielectric Strength of Epoxy-Air Interface under Superimposed AC+DC Voltage, International Symposium on High Voltage Engineering (ISH), Glasgow, 27 August - 1 September 2023
• Borvanov, S.; Leu, C., Toepfer, H.: Influence of a Solid Barrier on the Dielectric Strength under Low Frequency Mixed Voltage with Different DC Polarities, IEEE ICHVE, Berlin, 2024
• Borvanov, S.; Leu, C., Toepfer, H.: Footage of Breakdown Development in an Epoxy-Air Interface by a 1.2/50 µs Voltage Impulse in Presence of Surface Charges, IEEE ICHVE, Berlin, 2024
• Seifert, F.; Porizka, I.; Leu, C.: Charge Accumulation at High DC Voltage and Superimposed Medium Frequency AC Voltage, IEEE ICD - International Conference on Dielectrics, online conference, July 2020
• Leu, C.: Breakdown at Medium Frequency Voltage with and without Underlying DC Voltage, MFIS International PhD Symposium Medium Frequency Insulation Systems, TU Ilmenau, 2020
• Seifert, F.; Pichugin, P.; Töpfer, H.; Leu, C.: Measurement of the surface charge of polymer films after corona charging with mixed voltage, Symposium Polymere Isolierstoffe und ihre Grenzflächen, Zittau, VDE-Verlag 2021
• Seifert, F.; Jugelt, S.; Leu, C.: Measurement and Numerical Simulation of Discharge Characteristics in Air at Medium Frequency Voltages, IEEE Transactions on Dielectrics and Electrical Insulation (Volume: 28, Issue: 5, October 2021); DOI: 10.1109/TDEI.2021.009553; Electronic ISSN: 1558-4135; Print ISSN: 1070-9878
• Leu, C.: Effects of high voltage change rates on insulating materials, EPCE online seminar "Loading of winding systems by high du/dt", online seminar 31/03/2022
• Semenov, I.; Leu, C.: Dielectric Behaviour of Cellulosic Insulating Paper Subjected to a combined AC-DC electric field, IEEE Transactions on Dielectrics and Electrical Insulation, eCF Paper Id: TDEI-0452-2022 10.1109/TDEI.2023.3240133
• Weiland, N.; Weise. M.; Leu, C.: Partial Discharge Detection in Solids at medium frequency Voltages by Vibration Measurement, International Symposium on High Voltage Engineering (ISH), Glasgow, 27.8. - 1.9.2023, UK
• Weise, M.; Leu, C.: Optical Investigation on Electrical Discharge Behaviour in Air under DC Voltage with Superimposed AC, International Symposium on High Voltage Engineering (ISH), Glasgow, 27.8. - 1.9.2023, UK
• Pichugin, P.; Leu, C.; Töpfer, H.: Modification of Pulsed-Electro-Acoustic (PEA) measurement system, for investigation of the space charge distribution in insulating materials under HVDC with superimposed medium-frequency AC voltage, VDE ETG Fachtagung Hochspannungstechnik, Berlin, 2024

Research focus 2: Voltage measurement

• Kästel, P.; Leu, C.: Non-Contacting Measurement of HVAC, HVDC and Mixed Voltages using the Principle of a Generatoric Voltmeter, International Symposium on High Voltage Engineering (ISH), Glasgow, 27 August - 1 September 2023, UK

Further publications

• Machts, R.; Hunold, A.; Drebenstedt, Ch.; Rock, M.; Leu, C.; Haueisen, J.: Effects of rain on human head during direct lightning strike
• ^35th International Conference on lightning protection, Colombo, Sri Lanka, 2020
• Machts, R.; Hunold, A.; Drebenstedt, Ch.; Rock, M.; Leu, C.; Haueisen, J.: Reducing Lightning Currents in Human Head due to a Composite Helmet, ICBEM 2021
• Machts R., Hunold A., Rock M., Leu C., Haueisen J.: "Simulation of lightning current distributions in a realistic human head model" , e-IՏՏN: 2376-8037 p-IՏՏN: 2376-8029
• Machts, R.; Hunold, A.; Drebenstedt, Ch.; Rock, M.; Leu, C.; Haueisen, J.: Rain might help survive direct lightning strikes in the human head, Online Springer Scientific Reports 19.02.2023
• Jugelt, S.; Leu, C.: Contribution of the liquid phase on direct current interruption by a forced fluid flow, 10.14311/ppt.2023.X.1
• Leu, C.: Arc physics - the basis for successful fault location in power cables, Baur user training, anthology, Dresden 2023
• Machts, R.; Hunold, A.; Drebenstedt, Ch.; Rock, M.; Leu, C.; Haueisen, J.: Rain may improve survival from direct lightning strikes to the human head, Springer Nature Sci Rep14, 1695 (2024), https://doi.org/10.1038/s41598-023-50563-w

Dissertations (2nd reviewer, topic proposal and guidance for the work)

• Semenov, Ivan, 2022. (Defence: 05 May 2021)
  Dielectric behaviour of insulating papers subjected to mixed electric fields. Ilmenau. https://doi.org/10.22032/dbt.50393
• Reviewer: Univ.-Prof. Dr.-Ing. habil. Jürgen Petzoldt, TU Ilmenau; Prof. Dr.-Ing. Carsten Leu, HTWK Leipzig, Prof. Dr. rer. nat. Christian Franck, ETH Zurich
• Seifert, Florian, 2023. (Defence: 20 December 2022)
  Effects of discharges on dielectric interfaces at DC voltage and superimposed medium-frequency AC voltage, Ilmenau. https://doi.org/10.22032/dbt.55251
• Reviewer: Univ.-Prof. Dr.-Ing. habil. Jürgen Petzoldt, TU Ilmenau; Prof. Dr.-Ing. Carsten Leu, HTWK Leipzig
• Hippler, Christoph, 2024. (Defence: 12 December 2023)
  Mixed voltage stress of high-voltage MO resistors, Ilmenau. https://doi.org/10.22032/dbt.59726
• Reviewer: Univ.-Prof. Dr.-Ing. habil. Michael Rock, TU Ilmenau; Prof. Dr.-Ing. Carsten Leu, HTWK Leipzig; Prof. Dr.-Ing. Maik Koch, Magdeburg-Stendal University of Applied Sciences
• Jugelt, Stefan, 2024 (defence: 21 June 2024)
  Effects of dielectric fluids during the interruption of high-voltage direct currents, Ilmenau

Stressing of insulating materials and insulating sections with mixed voltage

• Hippler, Ch.; Leu, C.: Current and voltage distribution along surge arresters by superimposed DC and 50 Hz-AC voltage, VDE High-Voltage-Symposium 2016, Berlin
• Rzehak, R.; Leu, C.: High-resistance High-Voltage Measuring system for DC voltage with superimposed AC voltage, VDE High-Voltage-Symposium 2016, Berlin
• Eisenhuth, K.; Leu, C.: Electrical conductivity of polyethylene under superimposed direct and 50 Hz alternating high voltage stress, VDE High-Voltage-Symposium 2016, Berlin
• Hippler, Ch.; Leu, C.: Analysis of power dissipation by variation of frequency on High Voltage metal-oxide arrester BLOCK, ^19th International Symposium on high voltage engineering (ISH), Plzen, 2015
• Hippler, Ch.; Laue, K.:Voltage distribution along surge arresters under influence of temperature, INMR world congress, Munich, 2015
• Shulzhenko, E.; Rock, M.; Birle, M.; Leu, C.: Applying of Surge Arresters in Power Electronic Network Components, International Conference on Lightning Protection (ICLP), Shanghai, China, 2014
• Eisenhuth, K.; Leu, C.: Electrical conduction currents in polymeric insulating materials under mixed high voltage stress, ^18th International Symposium on high voltage engineering (ISH), Seoul, 2013
• Leu, C.; Eisenhuth, K.: Realisation of a mixed voltage stress up to 550 kV, VDE-ETG symposium "Mixed field stress of insulation systems", Cologne, 2010

Stressing of insulating materials and systems with high-voltage direct current (HVDC) and a superimposed medium-frequency voltage

• Semenov, I.; Leu, C.: Effect of high DC field on loss tangent and permittivity of non-impregnated transformerboard, 21st International Symposium on High Voltage Engineering, Budapest, Hungary, August 26-30, 2019
• Gelmroth, Ph.; Leu, C.: Breakdown Strength of Insulation Media under Utilisation of low and medium AC Voltage and mixed Voltage, VDE High-Voltage-Symposium 2018, Berlin
• Gelmroth, Ph.; Leu, C.; Möbes, S.; Petzoldt, J.: A novel Insulation Concept for an inductive medium Frequency Transformer for Solid State Transformer Applications, VDE High-Voltage-Symposium 2018, Berlin
• Seifert, F.; Leu, C.: Characterisation of surface discharges at high DC voltage superimposed by a medium frequency high voltage, VDE High-Voltage-Symposium 2018, Berlin
• Semenov, I.; Leu, C.: Dielectric properties of aramid paper under the simultaneous action of high DC and medium frequency AC voltage, VDE High-Voltage-Symposium 2018, Berlin
• Seifert, F.; Leu, C.: Surface Discharges at superimposed medium Frequency High Voltage, INSUCON 2017 International Insulation Conference (IEEE DEIS), 16-18 May 2017, Birmingham, England
• Semenov, I.; Leu, C.: Loss Factor and Permittivity Measurement at medium Frequency High Voltage with an HVDC offset, INSUCON 2017 International Insulation Conference (IEEE DEIS), 16-18 May 2017, Birmingham, England
• Seifert, F.; Leu, C.: High voltage surface discharges at low and medium frequency, VDE High-Voltage-Symposium 2016, Berlin
• Birle, M.; Leu, C.: Test circuits for investigating the thermal-electrical stress caused by superimposed periodic transients in HVDC systems, HIGHVOLT colloquium, Radebeul/Dresden (poster), 2015
• Birle, M.; Leu, C.: Loss of dielectric strength of polymers due to high-frequency voltages in HVDC applications, ^9th International Conference on Insulated Power Cables (Jicable), Versailles, 2015
• Birle, M.; Leu, C.: Dielectric heating in insulation materials at high DC and AC voltages superimposed by high frequency high voltages, ^18th International Symposium on high voltage engineering (ISH), Seoul, 2013
• Birle, M.; Leu, C.: Breakdown of polymer dielectrics at high direct and alternating voltages superimposed by high frequency high voltages, IEEE International Conference on solid dielectrics, Bologna, 2013
• Birle, M.; Bauer, S.; Leu, C.: Design and application of a high frequency high voltage generator ^17th International Symposium on high voltage engineering (ISH), Hannover, 2011

High voltage technologies

• Machts, R.; Hunold, A.; Rock, M.; Leu, C.; Haueisen, J.: Simulation of Lightning Current Distributions in a realistic Human Head Model, Softcom 2019, 27th International Conference on Software, Telecommunications and Computer Network, Split, Croatia, September 19-21, 2019
• Machts, R.; Hunold, A.; Drebenstedt, Ch.; Rock, M.; Leu, C.; Haueisen, J.: Experimental application of lightning currents to a human head phantom, 21st International Symposium on High Voltage Engineering, Budapest, Hungary, August 26-30, 2019
• Sanne, M.; Kampe, Lenz, C.; Gossel, S.; Wagner, S.; Haibel, A.; Melcher, Leu, C.; Pfriem, A.; Lautner,: Anatomical Studies of Wood treated with Pressure Pulse Shock Wave, International Wood Products Journal (ISSN 20426445, 20426453)
• Gossel, S.; Sanne, M.; Wagner, S.; Pfriem, A.; Lautner, S.; Leu, C.: Pressure pulse impregnation process using high voltage technology - Generation of electrohydraulic discharges to improve treatability of softwoods with impregnating liquid, VDE High-Voltage-Symposium 2018, Berlin
• Machts, R.; Hunold, A.; Leu, C.; Haueisen, J.; Rock, M.: Development of a Head-Phantom and Measurement Setup for Lightning Effects, 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society of the IEEE Engineering in Medicine and Biology Society
• (EMBC'16, Orlando, USA), DOI: 10.1109/EMBC.2016.7591504
• Machts, R.; Hunold, A.; Haueisen, J.; Rock, M.; Leu, C.: Analysis of lightning current distributions in a head phantom using measurements and simulations, VDE Conference "Lightning Protection", 2017
• Machts, R.; Hunold, A.; Leu, C.; Haueisen, J.; Rock, M.: Development of a Head-Phantom and Measurement Setup for Lightning Effects, 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society of the IEEE Engineering in Medicine and Biology Society (EMBC'16), Orlando, FL, USA, 17-20 August 2016
• Leu, C.; Gossel, S.; Birle, M.; Reichert, F.: Measurement of electric conductivity of hot gas in a SF6- circuit breaker interrupting fault currents; ^XVIIIIth Symposium on Physics of Switching Arc, Brno, Czech Republic, 2015, Published in Plasma Physics and Technology Journal (PPT)
• Kupfer, J.; Rock, M.; Leu, C.; Gossel, S.; Drebenstedt, Ch.: Comparative observations and laboratory tests on the effect of initial lightning discharges on biological materials, 11th VDE/ABB Lightning Protection Conference, Neu-Ulm, 2015
• Gossel, S.; Leu, C.: Low-energy pulping of biomass using periodical high-frequency high-voltage discharges in atmospheric air, 14th International Symposium on High Pressure Low Temperature Plasma Chemistry (HAKONE XIV), Zinnowitz, 2014

Gas breakdown, switching arcs, switching devices, switching in the network

• Jugelt, S.; Leu, C. Interruption of medium-voltage direct-current by separation of contact elements in mineral oil using an ultra-fast electro-magnetic actuator, Symposium on Physics of Switching Arc, Brno, Czech Republic, 2019 Plasma Physics and Technology XX(X):1-4, 2019
• Leu, C.; Schreiber, R.: Commutation stress measurements when switching 420 kV-Disconnectors for bus-transfer, VDE High-Voltage-Symposium 2018, Berlin
• Leu, C.; Birle, M.; Gossel, S.; Reichert, F.: Measurement of electric conductivity of hot gas in a SF6- circuit breaker interrupting fault currents, ^XVIIIth Symposium on Physics of Switching Arc, Brno, Czech Republic, 2015
• Gossel, S.; Leu, C.: Electrical breakdown of short spark gaps with several electrode materials in atmospheric air at AC (50Hz) and ramp voltage (10 kV/µs), ^19th International Symposium on high voltage engineering (ISH), Plzen, 2015
• Leu, C.; Birle, M.; Gossel, S.; Reichert, F.: Determination of electric conductivity of hot argon gas using a high-frequency high-voltage generator, ^20th international conference on gas discharges and their application (GD), Orleans, France, 2014
• Walter, M. M.; Leu, C.; Franck, Ch. M.: Optimising the arc characteristics for improved designs of passive resonant HVDC- circuit breakers, ^XVIIIth Symposium on Physics of Switching Arc, Brno, Czech Republic, 2013
• Bauer, S.; Leu, C.: Electrical breakdown and flashover of short spark gaps in air at transient voltages, 52nd International Scientific Colloquium, Ilmenau, 2010
• Leu, C.: Reignition processes when switching small currents, International Scientific Colloquium, Ilmenau, 1995
• Leu, C.; Böttcher, M.: Transient interference fields during switching processes, International Scientific Colloquium, Ilmenau, 1995
• Leu, C.: Simulation of low inductive current switching processes using an ATP-Module, EEUG Meeting, Budapest, 1996
• Leu, C.; Noack, F.: Reignitions in _SF6- circuit breakers during switching of low inductive currents, ^3rd International Conference on Electrical Contacts, Arcs, Apparatus and their Applikations (IC-ECAA), Xi'an, May 1997
• Leu, C.; Noack, F.; Rock, M.; Zhou, L. M.: Small current interruption in _SF6 and _SF6/N2,^8th International Conference on Switching Arc Phenomena, SAP&ETAP'97, Lodz/Poland, Sept. 1997
• Leu, C.; Noack, F.: Arc phenomena during interruption of low inductive currents in _SF6- circuit breakers, ^8th International Conference on Switching Arc Phenomena (SAP&ETAP'97), Lodz, Poland, 1997
• Leu, C.; Noack, F.; Trapp, N.; Habedank, U.; Kuntze, T.; Schmidt, H. P.; Carreau, D.; Kopeikova, D.: Controlled switching of unloaded transformers - application with 245/15/15kV step-up transformers CIGRE 13-110, Paris 1997
• Leu, C.; Rock, M.:Influence of arcing processes in controlled switching with _SF6 high voltage circuit breakers, 43rd International Scientific Colloquium, Ilmenau, 1998
• Leu, C.: Reconsolidation of an _SF6 switching path when switching small inductive currents, 43rd International Scientific Colloquium, Ilmenau, 1998
• Leu, C.; Reichert, F.: Investigations on the flow behaviour in the SF6 _piston circuit breaker, ELEKTRIE, 2001
• Leu, C.: Arcing processes when switching small inductive currents in _SF6,Dissertation TU Ilmenau, 2000
• Leu, C.: Exitation and course of current chopping oscillation as an intermittent oscillation in SF6_, ^9th International Conference on Switching Arc Phenomena (SAP 2001), Lodz, Poland, 2001
• Reichert, F.; Leu, C.: Simulation of the switching process in a _SF6 puffer circuit breaker, ^9th International Conference on Switching Arc Phenomena (SAP 2001), Lodz, Poland, 2001
• Leu, C.; Noack, F.: The increasing dielectric strength after interruption of low currents in SF6_, ^XIVth Symposium on Physics of Switching Arc, Brno, Czech Republic, 2001
• Leu, C.; Reichert, F.; Berger, F.: Interactions between drive and quenching system of an _SF6 blast piston switch when switching large currents, VDE-ETG conference "Diagnostics of electrical equipment", Cologne; 2004
• Leu, C.; Reichert, F.; Berger, F.: Interaction of arc and gas flow in _SF6 puffer circuit breaker switching short circuit currents, ^XVth Symposium on Physics of Switching Arc, Brno, Czech Republic, 2005
• Leu, C.; Reichert, F.; Berger, F.: Interaction of pressure forces and spring drive mechanism in a _SF6 puffer breaker at interruption of short circuit currents, ^15th International Symposium on High Voltage Engineering, Xi'an, China, 2005
• Leu, C.; Reichert, F.; Berger, F.: Interaction of arc extinction system and drive system of a _SF6 puffer breaker, ^11th International Conference on Switching Arc Phenomena (SAP 2005), Lodz, Poland, 2005
• Leu, C.; Kornhaas, A.; Berger, F.: Messung und Bewertung transienter Kraftsignale zur Zustandsbewertung von Hochspannungsleistungsschaltern, VDE-ETG Tagung "Diagnostik elektrischer Betriebsmittel", Kassel; 2006
• Kornhaas, A.; Reichert, F.; Leu, C.; Berger, F.: Experimental investigations of the influence of ablation to the pressure built up in _SF6 self blast circuit breakers, ^XVIth Symposium on Physics of Switching Arc, Brno, Czech Republic, 2009
• Reichert, F.; Kornhaas, A.; Leu, C.; Berger, F.: Simulation of interaction between switching arc and switching mechanics in _SF6 self blast circuit breakers, ^XVIth Symposium on Physics of Switching Arc, Brno, Czech Republic, 2009
• Liebschner, M.; Küchler, A.; Krause, Ch.; Heinrich, B.; Leu, C.; Berger, F.: Interaction of oil ducts and solid insulation in HVDC barrier systems, ^16th Internat. Symposium on High Voltage Engineering, Johannesburg, South Africa, 2009
• Liebschner, M.; Küchler, A.; Krause, Ch.; Heinrich, B.; Leu, C.; Berger, F.: Oil ducts and solid insulation in barrier systems at HVDC stresses, 52nd International Scientific Colloquium, Ilmenau, 2009

Patents

• DE 1020198 217 600 B3, 2021

  Ehrhardt, A.; Leu, C., Semenov, I.; Jugelt, S.; Zahlmann, P.: Short-circuit device

• DE 10 2010 052 723 A1, 2013 (national and European)

  Leu, C., Gossel, S.: Method and device for preparing or processing a process material enclosed by a gaseous medium using electrical discharges

• Patent 20 2013 000 768 U1

  Birle, M.; Leu, C.; Gossel, S.: Device for generating a constant sinusoidal high-frequency high voltage