EN 61400-21:2008

Wind turbines - Part 21: Measurement and assessment of power quality characteristics of grid connected wind turbines

IEC 61400-21:2008 covers the definition and specification of the quantities to be determined for characterizing the power quality of a grid connected wind turbine; measurement procedures for quantifying the characteristics; and procedures for assessing compliance with power quality requirements, including estimation of the power quality expected from the wind turbine type. The main changes with respect to the previous edition deal with interharmonics and current distortions (<9 kHz); response to voltage dips; active power ramp rate limitation and set-point control; reactive power capabilities and set-point control; grid protection and reconnection time after grid faults.

Windenergieanlagen --Teil 21: Messung und Bewertung der Netzverträglichkeit von netzgekoppelten Windenergieanlagen

Eoliennes - Partie 21: Mesurage et évaluation des caractéristiques de qualité de puissance des éoliennes connectées au réseau

La CEI 61400-21:2008 couvre la définition et la spécification des grandeurs à déterminer pour caractériser la qualité de puissance d'une éolienne connectée à un réseau; les procédures de mesure pour quantifier les caractéristiques; les procédures pour évaluer la conformité aux exigences de qualité de puissance, y compris l'estimation de la qualité de puissance attendue d'un type d'éolienne. Les principales modifications par rapport à l'édition précédente concernent les interharmoniques et distorsions de courant (<9 kHz); la réponse aux creux de tension; la limitation du taux de variation et la commande de la valeur de consigne de la puissance active; les capacités de puissance réactive et la commande de la valeur de consigne de la puissance réactive; la protection réseau et le temps de reconnexion après des défauts du réseau.

Sistemi generatorjev vetrne turbine - 21. del: Merjenje in ocenjevanje kakovosti napetosti vetrnih turbin prilkjučenih na omrežje (IEC 61400-21:2008)

General Information

• Status: Withdrawn
• Publication Date: 06-Nov-2008
• Withdrawal Date: 30-Sep-2011
• ICS: 27.180 - Wind turbine energy systems
• Technical Committee: CLC/TC 88 - Wind turbines
• Drafting Committee: IEC/TC 88 - IEC_TC_88
• Parallel Committee: IEC/TC 88 - IEC_TC_88
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 24-Jun-2022
• Completion Date: 24-Jun-2022
• Ref Project: SIST EN 61400-21:2009 - Wind turbines -- Part 21: Measurement and assessment of power quality characteristics of grid connected wind turbines

Relations

• Replaces: EN 61400-21:2002 - Wind turbine generator systems - Part 21: Measurement and assessment of power quality characteristics of grid connected wind turbines
• Effective Date: 28-Jan-2023
• Replaced By: EN IEC 61400-21-1:2019 - Wind energy generation systems - Part 21-1: Measurement and assessment of electrical characteristics - Wind turbines
• Effective Date: 01-Dec-2020

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 61400-21:2009
01-januar-2009
1DGRPHãþD
SIST EN 61400-21:2002
6LVWHPLJHQHUDWRUMHYYHWUQHWXUELQHGHO0HUMHQMHLQRFHQMHYDQMHNDNRYRVWL
QDSHWRVWLYHWUQLKWXUELQSULONMXþHQLKQDRPUHåMH,(&
Wind turbines -- Part 21: Measurement and assessment of power quality characteristics
of grid connected wind turbines
Windenergieanlagen --Teil 21: Messung und Bewertung der Netzverträglichkeit von
netzgekoppelten Windenergieanlagen
Eoliennes -- Partie 21: Mesure et évaluation des caractéristiques de qualité de puissance
des éoliennes connectées au réseau
Ta slovenski standard je istoveten z: EN 61400-21:2008
ICS:
27.180 Sistemi turbin na veter in Wind turbine systems and
drugi alternativni viri energije other alternative sources of
energy
SIST EN 61400-21:2009 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61400-21:2009

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SIST EN 61400-21:2009

EUROPEAN STANDARD
EN 61400-21

NORME EUROPÉENNE
November 2008
EUROPÄISCHE NORM

ICS 27.180 Supersedes EN 61400-21:2002


English version


Wind turbines -
Part 21: Measurement and assessment
of power quality characteristics of grid connected wind turbines
(IEC 61400-21:2008)


Eoliennes -  Windenergieanlagen -
Partie 21: Mesurage et évaluation Teil 21: Messung und Bewertung
des caractéristiques de qualité der Netzverträglichkeit
de puissance des éoliennes von netzgekoppelten
connectées au réseau Windenergieanlagen
(CEI 61400-21:2008) (IEC 61400-21:2008)




This European Standard was approved by CENELEC on 2008-10-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61400-21:2008 E

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SIST EN 61400-21:2009
EN 61400-21:2008 – 2 –
Foreword
The text of document 88/317/FDIS, future edition 2 of IEC 61400-21, prepared by IEC TC 88, Wind
turbines, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 61400-21 on 2008-10-01.
This European Standard supersedes EN 61400-21:2002.
EN 61400-21:2008 includes the following new items with respect to EN 61400-21:2002:
– interharmonics and current distortions (< 9 kHz),
– response to voltage dips,
– active power ramp rate limitation and set-point control,
– reactive power capabilities and set-point control,
– grid protection and reconnection time after grid faults.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2009-07-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-10-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61400-21:2008 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 61000-3-3 NOTE  Harmonized as EN 61000-3-3:2008 (not modified).
IEC 61000-4-30 NOTE  Harmonized as EN 61000-4-30:2003 (not modified).
IEC 61400-1 NOTE  Harmonized as EN 61400-1:2005 (not modified).
__________

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SIST EN 61400-21:2009
– 3 – EN 61400-21:2008

Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

The followin
...