2 cired2013 power quality emc-emi-safety

Power Quality

EMC/EMI/Safety

CIRED 2013

PQ

kwaliteit van

elektriciteit

Klanten Netbeheerder

Fabrikanten

Kwaliteit van spanning Kwaliteit van stroom

Immuniteit Emissie

De betrokken partijen

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

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

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

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


• 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.


• 0141 VOLTAGE QUALITY PARAMETERS IN LV

DISTRIBUTION GRIDS IN DEPENDENCE ON SHORT

CIRCUIT IMPEDANCE


• 0324 POWER QUALITY OF SUPPLY

CHARACTERIZATION IN THE PORTUGUESE

ELECTRICITY TRANSMISSION GRID


• 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


• 1501 POWER QUALITY AND METERING

MONITORING APPLICATIONS FOR SMART

NETWORK OPERATIONS


• 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!

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


• 0256 IMPACTS OF RIPPLE CONTROL

SIGNALS AT LOW VOLTAGE CUSTOMER’S

INSTALLATIONS (NL)


• 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


• 1480 HARMONIC PENETRATION

ASSESSMENT IN RESIDENTIAL AREAS


• 0066 TECHNICAL CONSIDERATIONS IN HARMONIC

MITIGATION TECHNIQUES APPLIED TO THE

INDUSTRIAL ELECTRICAL POWER SYSTEMS

0763

1128

PQ related to DG, EV,… (1)

• 1009 DIP BEHAVIOUR OF GRID CONNECTED

INVERTORS


• 1036 GRID IMPACT FROM PV-

INSTALLATIONS IN NORTHERN SCANDINAVIA


• 1481 IMPACT OF PV AND LOAD

PENETRATION ON LV NETWORK VOLTAGES AND

UNBALANCE AND POTENTIAL SOLUTIONS


• 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!

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


• Metingen rondom (elektro)magnetische velden)

• 0330 – 0537 – 1089

• Afnemende aandacht voor dit onderwerp


• 1511 USE OF FINITE PROBABALISTIC

MODELLING TO ESTABLISH EARTHING HAZARD

LIMITS

Nieuwe methode om “veilige”

foutspanningen te berekenen


• 0035 VERIFICATION OF GLOBAL EARTHING

SYSTEMS

Current distribution at the

fault location and remaining

fault voltage

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

2 cired2013 power quality emc-emi-safety

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