HIGHVOLT Prüftechnik Dresden GmbH

Ask the experts! - Open question session

Date: 23.11.2021

Time: 3 pm CET - 9 am EST - 9 pm SGT

Prof. Kay Rethmeier
Director Department Electrical Power Engineering, Head of High Voltage Labs
Kiel University of Applied Sciences


Only no PD is good PD. As long as there are any kind of pulses above the ambient noise level this leads to endless discussions with the customer.


Professor Kay Rethmeier studied High Voltage Engineering at Berlin Technical University, where he also obtained his doctorate in the field of Partial Discharge Measurements. After university Professor Rethmeier gained professional experience at IPH High Voltage Test Center, Berlin, BAUR PMT and OMICRON, both located in Austria. At OMICRON Professor Rethmeier performed PD measurements all over the world as member of Technical Support, Engineering Services and as trainer for the MPD measuring system, developed by mtronix, Berlin. Since 2012 he is professor for High Voltage Engineering and EMC at Kiel University of Applied Sciences. For more than 10 years now he has been conducting the seminar "Partial Discharges" for the German VDE.

Prof. Kaveh Niayesh
Department of Electric Power Engineering
Faculty of Information technology and electrical engineering
NTNU - Norwegian university of science and technology



Kaveh Niayesh is a Professor at the Department of Electric Power Engineering, Norwegian University of Science and Technology (NTNU). In the last 20 years, he held different academic and industrial positions including Principal Scientist with the ABB Corporate Research Center, Baden-Dättwil, Switzerland, Associate Professor with the University of Tehran, Manager in Basic Research, with AREVA T&D, Regensburg, Germany, and Principal Engineer with ABB Medium voltage, Ratingen, Germany. He has a BSc and an MSc in Electrical Engineering from the University of Tehran, Iran, and a Ph.D. also in Electrical Engineering from RWTH University, Aachen, Germany. Professor Niayesh belongs to the research group for High Voltage Technology. His research interests are mainly in the broad field of high voltage and switchgear technology; specifically on current interruption in power switching devices in AC and DC power networks, new materials for high voltage insulation and for high current interruption, Breakdown and aging behavior of insulation materials exposed to HVDC and repetitive fast impulses, Diagnostic and condition assessment of power switchgear as well as High voltage and High current test and measurement techniques.

Prof. Yuriy Serdyuk
Head of the unit “Power grids and components”
Department of Electrical Engineering
Chalmers University of Technology


Yuriy Serdyuk received his MSc and PhD degrees in elecrophysics and high voltage engineering from the National Technical University of Ukraine “Kiev Polytechnic Institute” in 1986 and 1995, respectively. From 1986, he worked at the Institute of Electrodynamics of the National Academy of Science of Ukraine. In 1996-1997, he was a visiting researcher at the High voltage laboratory at ABB High voltage technology in Zurich-Oerlikon, Switzerland. In 1999, he joined Chalmers University of Technology in Gothenburg, Sweden, where he worked on various positions. Since 2017, Yuriy Serdyuk is a Professor in high voltage engineering and Head of the unit “Power grids and components” at Chalmers University. His research interests include electric charge transport and associated processes in dielectric materials and on their interfaces; electric field control in gaseous, liquid, solid and hybrid high voltage insulation systems; coupled electromagnetic and thermal phenomena in components of power systems.

Dr. Ralf Pietsch
Head of Documentation and Science
HIGHVOLT Prüftechnik Dresden GmbH


From 1979 to 1986, he studied physics at the RWTH Aachen University, where he graduated with a diploma in physics. In 1992, he received his doctorate at the Institute for High Voltage Technology at RWTH Aachen University, where he obtained his doctorate in the field of ageing effects before and during the inception of partial discharges in polymeric insulated High-Voltage cables. From 1992 to 1996, he worked as project engineer at ABB Corporate Research in Baden-Dättwil, Switzerland. Main topics during this time were the development of UHF partial discharge sensors, the physics of partial discharges in gases and solids, their simulation, measurements and interpretation. Further main topics were investigations on the dielectric properties of SF6, the formation of decomposition products of SF6 in circuit breakers and investigations on the use of alternative gases as a replacement for SF6, as this gas has an extremely high greenhouse gas potential (GWP). At the end of 1996, he then moved to ABB High Voltage Technology in Zurich-Oerlikon (Switzerland) to head the type testing and development laboratories. He tested gas-insulated switchgear (GIS) with rated voltages of over 170 kV to 800 kV. Since January 2001, he has been working for HIGHVOLT Prüftechnik Dresden GmbH in various technical positions. The main activities are in the fields of impulse and DC test systems, electrical field calculations/simulations and partial discharge measurements in gaseous, liquid and solid insulation systems and their interpretation. In addition, since 1996 he is an active member of the CIGRE Study Committee SC D1 ("Materials and Emerging Test Technologies") in various working groups as a specialist, secretary or convenor. Currently he is an active member of WG D1.63 ("Partial discharge detection under DC voltage stress"), which investigates partly the physics of partial discharges under DC voltages. In addition, he has headed WG D1.33, which wrote the technical brochure entitled "High-Voltage On-Site Testing with Partial Discharge Measurement". Since September 2016, he is chairman of this CIGRE Study Committee SC D1. In addition, he has been lecturing on "Diagnostics and High-Voltage Measurement Technology" at the Chemnitz University of Technology since 2004, again with a focus on partial discharges, and various measurement and diagnostic technologies. Since several years, he conducts external, international training courses on high voltage technology. This takes place, among other things, within the framework of the HICADEMY seminars of HIGHVOLT as main speaker.

Moderation: Florian Schwarz


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