This document provides an overview and summary of papers and topics that will be discussed in Session 2 on Power Quality and EMC. There are 4 main topics: 1. Magnetic fields, grounding, safety and immunity issues related to new technologies like PV, wind, storage and EVs. 2. Power quality issues caused by the integration of new technologies like PV, wind, storage, EVs and LED lighting. 3. Measurement and analysis of power quality issues like harmonics, interharmonics and supraharmonics. Mitigation methods will also be discussed. 4. Standardization efforts, large scale power quality monitoring systems, handling big data, and regulatory issues related to changes in power

1. SPREKER:
J.F.G. Cobben
Sessie 2: Power Quality & EMC

2. Overzicht papers en onderwerpen
1: Magnetic fields, grounding, safety and immunity
Magnetic fields (3)
Grounding and Safety (6)
Safety and Immunity (3)
2: Power quality issues of new technologies as PV (6), Wind (4), Storage (4), EV (8), LED (3) and other aspects (4)
3: Power quality measurement, analysis and mitigation methods
Harmonics and interharmonics (9) and Supraharmonics (7)
Other power quality phenomena (3)
Mitigation (5) and Measurement aspects (5)
4: Standardization, system monitoring, handling big data and regulatory issues
Standardization (10)
Large scale PQ monitoring systems and campaigns (10)
Visualization and machine learning for PQ big data (5)
PQ regulation, disturbances and customer issues (7)

3. Grounding and safety
• CIRED-Sessie 2: Power Quality and EMC Potential scope of discussion
There are still a lot of uncertainties in
the field of grounding system
engineering. Simplified assumptions
about the soil characteristics are
used, which might lead to expensive
earthing designs to guarantee safety.

4. Methodology to regulate power factor in installations with solar self-
consumption
• Low PF
• PV-inverter used ad PFC
[B2–0891(FR)]

5. DETERMINING THE IMPACTS OF FAST-CHARGING OF ELECTRIC BUSES ON THE
POWER QUALITY BASED ON FIELD MEASUREMENTS
[B2–0252(NL)]

6. LED – harmonics, supraharmonics, immunity
Harmonic voltage variation could also be a source of flicker!

7. Novel intermediate method of impedance calculation for connection
requirements to high voltage grids
[B3-0440(DK)]
150-350 Hz
Beschikbare
ΔUh
> Zh X Ih

8. Propagation of supraharmonics (in a medium-voltage network)
[B3-0023(SE)]
Supraharmonics is an increasing source of problems!!
• Increasing importance of the frequency range above 2 kHz
• Studying the propagation towards the MV network
• Looking to frequency range up to 500 kHz

9. ASSESSMENT OF HARMONIC CONTRIBUTION OF CUSTOMER INSTALLATIONS
BASED ON FIELD MEASUREMENTS
Paper 0772

10. Potential scope of discussion Regulation
• Changes in the distribution system are getting faster and faster. With the net zero goals and the
green energy pact, these developments will even intensify in the following years.
• This means also that power quality which is taken for granted in many places will become a hot
topic with sensitive apparatus and systems on the one hand and a new mix of emissions on the
other hand.
• Distribution system operators should therefore monitor power quality constantly in order to
identify trends in disturbances and take measures early before a tripping point is reached where
large investments need to be undertaken.
• This applies even more to efforts in standardization and regulation, which also need to anticipate
these changes.
• The goal will always be to enable coordination of emission and compatibility levels for an efficient
operation of the distribution grid.

11. BEDANKT
VOOR UW
AANDACHT