Tutorial 3 – High Frequency Power Quality

The tutorial “High frequency power quality” gives an in-depth view on the current research conducted on emission and immunity issues in the frequency range 2 kHz – 150 kHz. This frequency range, used for narrow band power line communication (PLC) knows limited standards, but is on the other hand over-crowded with switching harmonics. Due to the increasing number of switching power electronic devices on the grid (grid connected inverters, switched mode power supplies, …) an increasing number of problems have been noticed.

Aim of the tutorial

The aim of this tutorial is to give give an overview of the existing standards and a view on known emission and immunity problems. The main part of the tutorial will discuss the emission levels in the grid and how the characterisation of the sources can be done. The relation between High Frequency and Low Frequency Power Quality will be analysed. Finally, how to perform in-situ measurements and solving problems is discussed. After following the tutorial, the attendant should be aware of the short-comings of the standards and know the difficulties to reach reproducible and accurate measurements.


The topics that will be covered include:

  • Standards
  • HFPQ problems
  • Results of grid survey
  • Characterisation of HFPQ sources and relation to LFPQ
  • In situ measurements and solving problems


The tutorial is provided free of charge for IEEE ENERGYCON 2016 registered participants. Please register for participation online at http://www.conftool.com/energycon2016.

Participants that have already registered for the conference, but not for the tutorial can add the tutorial to their registration: https://www.conftool.com/energycon2016/index.php?page=editParticipant.


Jan J. M. Desmet (UGent – Lemcko) received the Polytechnical Engineer degree from the polytechnic academy in Kortrijk, the M.Sc. degree in Electrical Engineering from the V.U.Brussels and in his Ph.D. degree at the K.U.Leuven, Belgium. Currently he is full professor at the Ghent University teaching power quality, renewables and industrial electric measurement techniques. His research interests include LV distributed generation, renewable, power quality and their mutual interactions. Besides his job as full professor and researcher, he also is member of several expert colleges and both reviewer and topic chairman for international scientific conferences. He is also IEEE senior member, member of SC77A (IEC) and TC210 (CENELEC). His international scientific recognition is validated by his membership of the CIRED Technical Committee TC2 and his membership in the CIGRE JWG C4.24. His research lab is the only one over Europe with a free programmable artificial grid of 240kVA, including all renewable sources. Since November 2014, research group Lemcko became member of the DERLab group.
Jos Knockaert (UGent – Lemcko) received the degree of industrial engineer in Electrotechnics in 1996 from the University College of Bruges-Ostend, the M.Sc. degree in Electronic System Design in 2001 from Leeds Metropolitan University and the Ph.D. degree in Engineering Science in 2009 from the K.U. Leuven. He worked as EMC-design engineer in the industry and became assistant at the University College of Bruges-Ostend. Since 2010, he is assistant professor at Ghent University, teaching electrical machines, electromagnetic compatibility and power electronics. He is member of the research group Lemcko with focus on electromagnetic compatibility, power electronics and high frequency problems in industrial systems.