1) The document discusses various topics related to power quality including regulation and monitoring of voltage quality, problems and solutions regarding harmonics and distributed generation, and EMC, EMI and safety issues. 2) Key areas covered include the need for expanded power quality monitoring, establishing limits for voltage events, assessing the impacts of photovoltaic systems and loads, and emissions in the 2-150 kHz frequency range. 3) While many established power quality problems and potential solutions are addressed, the relationship between distributed energy resources, electric vehicles, and power quality merits further attention going forward.

1. Power Quality
EMC/EMI/Safety
CIRED 2013

2. PQ
kwaliteit van
elektriciteit KlantenNetbeheerder
Fabrikanten
Kwaliteit van spanning Kwaliteit van stroom
Immuniteit Emissie
De betrokken partijen

3. Power Quality
Kwaliteit van spanning en stroom
Regulering Modellering
Data
management
Meer metingen PQM
Meer toepassingen
• Beveiliging
• Fraude
• Spanningsregeling
Netwerkmodellen
Model Componenten
database
• Immuniteit
• Emissie
Dips
Transiӫnten
Limieten spanning
Meetgemiddelden
Netcode

4. Indeling papers PQ/EMC
Regulering
monitoring
Invloed
DG / EV/.
Problemen
oplossingen
EMC
Aarding
44 (2) 47 (1) 35 15
36 papers
over harmonische
46 papers over
spanningsveranderingen, dips

5. Regulering en monitoring
• Norm voor dips en
transiënten
• Uitbreiding PQM
• Dips op OS
• Meer LS- en MS-
metingen
• Meer info over
speciale projecten
(EHS,HS, MS, LS)
• Transparant

6. Power Quality Regulation / monitoring (1)
• 0349 Guidelines for good practice on voltage
quality monitoring (NL)
•Voltage quality monitoring programmes are important tools for voltage quality regulation
•All possible applications should be kept in mind
•Voltage quality monitoring programmes should be funded through the network tariffs
•Results should be made available regularly
•Diversification of indices and methods is to be avoided

7. Power Quality Regulation / monitoring (2)
• 0350 A EUROPEAN BENCHMARKING OF
VOLTAGE QUALITY REGULATION (NL)
CEER considers the following improvements necessary:
• an effective extension to the high voltage networks (with effective limits and
requirements) and the consideration of extra high voltage networks;
• the adoption of new limits for supply voltage variations in distribution networks
(especially in low voltage networks);
• the introduction of limits for voltage events, taking into account the different
characteristics of the European networks; for voltage dips and voltage swells one or
more responsibility-sharing curves should be defined;
• a general framework for sharing the voltage quality responsibilities between network
companies, equipment manufacturers and users.

8. Power Quality Regulation / monitoring (3)
• 0141 VOLTAGE QUALITY PARAMETERS IN LV
DISTRIBUTION GRIDS IN DEPENDENCE ON SHORT
CIRCUIT IMPEDANCE

9. Power Quality Regulation / monitoring (4)
• 0324 POWER QUALITY OF SUPPLY
CHARACTERIZATION IN THE PORTUGUESE
ELECTRICITY TRANSMISSION GRID

10. Power Quality Regulation / monitoring (5)
• 0759 ON-SITE POWER QUALITY
MEASUREMENTS IN SLOVAK TRANSMISSION AND
DISTRIBUTION NETWORKS
• Measured before and
after installed PV-system
REFERENCES
[1] Gert Rietveld – VSL,
the Nederlands, Project Protocol
“Metrology for Smart Grids”
October 2010

11. Power Quality Regulation / monitoring (6)
• 1501 POWER QUALITY AND METERING
MONITORING APPLICATIONS FOR SMART
NETWORK OPERATIONS

12. Power Quality Regulation / monitoring (7)
• 1- If the reactive power is reduced to zero, the power factor will be unity.
• 2- The reactive power completes the power triangle, S =P +Q .
• 3- The sum of all reactive powers in a node is zero.
• 4- Reactive power can be positive or negative (sign specifies inductive or capacitive type).
• 5- Reactive power can be reduced to zero by inserting inductive or capacitive components.
• 6- The reactive power can be calculated from the time domain wave forms of voltage and current.
• 1256 COMPARISON OF VARIOUS REACTIVE
POWER DEFINITIONS IN NON SINUSOIDAL NETWORKS
WITH THE PRACTICAL DATA OF ELECTRICAL ARC
FURNACE
METEN IS WETEN!

14. Problemen en Oplossingen (1)
• 0209 SPREAD OF HIGH FREQUENCY
CURRENT EMISSION
Veel voorkomend onderwerp
Diverse papers over
Harmonische stromen met
Hoger frequentiebereik dan
50th harmonische

15. Problemen en Oplossingen (2)
• 0256 IMPACTS OF RIPPLE CONTROL
SIGNALS AT LOW VOLTAGE CUSTOMER’S
INSTALLATIONS (NL)

16. Problemen en Oplossingen (3)
• 0425 FLICKER/VOLTAGE FLUCTUATION
RESPONSE OF MODERN LAMPS INCLUDING
THOSE WITH DIMMABLE CAPABILITY AND OTHER
LOW VOLTAGE SENSITIVE EQUIPMENT
Dimming in general will
Increase the flicker problem

17. Problemen en Oplossingen (4)
• 1480 HARMONIC PENETRATION
ASSESSMENT IN RESIDENTIAL AREAS

18. Problemen en Oplossingen (5)
• 0066 TECHNICAL CONSIDERATIONS IN HARMONIC
MITIGATION TECHNIQUES APPLIED TO THE
INDUSTRIAL ELECTRICAL POWER SYSTEMS
0763
1128

19. PQ related to DG, EV,… (1)
• 1009 DIP BEHAVIOUR OF GRID CONNECTED
INVERTORS

20. PQ related to DG, EV,… (2)
• 1036 GRID IMPACT FROM PV-
INSTALLATIONS IN NORTHERN SCANDINAVIA

21. PQ related to DG, EV,… (3)
• 1481 IMPACT OF PV AND LOAD
PENETRATION ON LV NETWORK VOLTAGES AND
UNBALANCE AND POTENTIAL SOLUTIONS

22. PQ related to DG, EV,… (4)
• 0143 MEASUREMENTS OF POWER QUALITY AND
VOLTAGE LEVEL EFFECTS ASSOCIATED WITH A
PHOTO VOLTAIC CLUSTER ON A DOMESTIC
HOUSING ESTATE.
The study took place on low voltage (LV) feeder from the MV/LV substation in the north of
the estate. The feeder comprises of a three phase main cable that is run radially out of
the “North” substation to an underground link box that provides a normally open point
(NOP).
The feeder supplies 62 properties with a single phase connection and of these
connections 49 include properties that each incorporate a 1.5 kW PV installation. Further
measurements were made at the NOP “Mid Point” and at the “South” substation feeding
the adjacent feeder at the NOP point.
The exact phasing of the PV connections is unknown however from the results it can be
inferred that the distribution between the three phases in uneven and is approximately
distributed 40%:40%:20% across phases L1:L2:L3.
No problems!

23. EMC, EMI and Safety (1)
• 1271 EMI OF EMISSIONS IN THE FREQUENCY
RANGE 2 kHz - 150 kHz
More and more devices operating in
this frequency range
Regulation not yet well defined
1417 On-line 2-150 kHz
grid impedance meter

24. EMC, EMI and Safety (2)
• Metingen rondom (elektro)magnetische velden)
• 0330 – 0537 – 1089
• Afnemende aandacht voor dit onderwerp

25. EMC, EMI and Safety (3)
• 1511 USE OF FINITE PROBABALISTIC
MODELLING TO ESTABLISH EARTHING HAZARD
LIMITS
Nieuwe methode om “veilige”
foutspanningen te berekenen

26. EMC, EMI and Safety (4)
• 0035 VERIFICATION OF GLOBAL EARTHING
SYSTEMS
Current distribution at the
fault location and remaining
fault voltage

27. Samenvattend
• Veel nieuwe ontwikkelingen op gebied van PQ-meten
• Regulering op dit gebied begint meer inhoud te krijgen
• Veel “bekende” problemen en oplossingen
• Harmonische problemen over groter frequentiebereik
• Relatie PV, Wind, EV, LED met PQ verdient meer
aandacht
• EMC, EMI, Safety raakt enigszins ondergesneeuwd