Measuring and assessing interference levels for the frequency range (2 to150) kHz

Date: 2022-04-06 to 2022-04-06
Location: Online workshop

6th April 2022 at 08:00 – 11:00 UTC (10:00 – 13:00 CEST), online

At this workshop, EMPIR project Grid measurements of 2 kHz - 150 kHz harmonics to support normative emission limits for mass-market electrical goods (18NRM05, SupraEMI) will report outcomes and results at the conclusion of this three- year project.

The growth of power converters in equipment such as renewable generation and electric vehicle chargers has led to a build-up of EMI in the (2 to150) kHz range. These frequencies are above the traditional frequency range, which is used to regulate emissions of equipment connected to the public electricity supply. The lack of emission limits in the past has resulted in increased EMI related malfunction of mass-market goods, as well as premature aging of connected consumer and professional equipment. The lack of measurement framework in the (2 to 150) kHz range is hindering the ability to regulate emission in this frequency range and this workshop will explore the challenges and progress toward a framework for PQ measurements.

This EMPIR project was initiated to define a new normative measurement method for reproducible grid measurements in the (2 to 150) kHz frequency range and associated R&D.

Aims of the workshop:

The workshop will present and discuss some of the EMI problems that exist due to (2 to 150) kHz emissions identifying some case studies. Newly developed computationally efficient algorithms, that are suitable for use in legacy instrumentation and accurate enough to underpin future standardisation, will be presented. Laboratory and grid measurement surveys of typical emitting appliances have been carried out to compare various measurement methods and these results will be shown.

Furthermore, the project will discuss the suitability of these methods for assessing the newly-established compatibility disturbance levels, with reference to the traditional, complex and computationally intensive approach specified by CISPR-16. Results from frequency dependant grid impedance surveys in several European grids will be presented, and the suitability of artificial mains networks - as used in EMC test houses - will be considered.

Provisional Agenda:

1. Background to the problem of (2 to 150) kHz conducted EMI in public electricity networks, Paul Wright, NPL

2. Discussion

3. A proposed framework for 2-150kHz measurement methods, Deborah Ritzmann, NPL

4. Light Quasi-Peak: a computationally efficient method suitable for assessment of grid disturbance levels against compatibility levels in the (9 to 150) kHz range, Alexander Gallarreta, UPV/EHU

5. A comparison of performance and results of measurement methods applied to a selection of domestic appliances with emissions in the (2 to 150) kHz range, Ronald van Leeuwen, VSL

6. Experiences and conclusions of (2 to 150) kHz measurements under controlled grid conditions in the EDF concept grid in France,  Daniella Istrate, LNE

7. Challenges in the application of measurement methods in grid measurements, Victor Khokhlov, TUD

8. Discussion

9. Mains impedance measurements and the suitability of Artificial Mains Networks for

(2 to 150) kHz EMC testing, Jan Meyer/Robert Stiegler, TUD

10. Next steps and final discussion

Register for the workshop (free of charge)


This EMPIR project is co-funded by the European Union's Horizon 2020 research and innovation programme and the EMPIR Participating States

EMPIR , TC-EM Related Event , EMN Smart Electricity Grids , Standardisation