IEC 61400-27-2:2020

Wind energy generation systems - Part 27-2: Electrical simulation models - Model validation

IEC 61400-27-2:2020 specifies procedures for validation of electrical simulation models for wind turbines and wind power plants, intended to be used in power system and grid stability analyses. The validation procedures are based on the tests specified in IEC 61400-21 (all parts). The validation procedures are applicable to the generic models specified in
IEC 61400-27-1 and to other fundamental frequency wind power plant models and wind turbine models.
The validation procedures for wind turbine models focus on fault ride through capability and control performance. The fault ride through capability includes response to balanced and unbalanced voltage dips as well as voltage swells. The control performance includes active power control, frequency control, synthetic inertia control and reactive power control. The validation procedures for wind turbine models refer to the tests specified in IEC 61400-21-1. The validation procedures for wind turbine models refer to the wind turbine terminals.

Systèmes de génération d'énergie éolienne - Partie 27-2: Modèles de simulation électrique - Validation des modèles

IEC 61400-27-2:2020 spécifie des procédures de validation des modèles de simulation électrique pour les éoliennes et les centrales éoliennes, destinées à être utilisées dans des analyses de stabilité du réseau d'énergie électrique et du réseau de distribution. Les procédures de validation reposent sur les essais spécifiés dans l'IEC 61400-21 (toutes les parties). Les procédures de validation sont applicables aux modèles génériques spécifiés dans l’IEC 61400-27-1 et aux autres modèles de centrales éoliennes et d’éoliennes à fréquence fondamentale.
Les procédures de validation des modèles d'éoliennes se concentrent sur la capacité d’alimentation continue par défaut et les performances de commande. La capacité d’alimentation continue par défaut comprend la réponse aux creux de tension équilibrés et déséquilibrés, ainsi qu’aux hausses de tension. Les performances de commande comprennent la commande de puissance active, la commande de fréquence, la commande d’inertie synthétique et la commande de puissance réactive. Les procédures de validation applicables aux modèles d’éoliennes se rapportent aux essais spécifiés dans l’IEC 61400‑21‑1. Les procédures de validation applicables aux modèles d’éoliennes se rapportent aux bornes de l'éolienne.

General Information

• Status: Published
• Publication Date: 13-Jul-2020
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 27.180 - Wind turbine energy systems
• Technical Committee: TC 88 - Wind energy generation systems
• Drafting Committee: WG 27 - TC 88/WG 27
• Current Stage: PPUB - Publication issued
• Start Date: 17-Jul-2020
• Completion Date: 14-Jul-2020

Standards Content (Sample)

IEC 61400-27-2 ®
Edition 1.0 2020-07
INTERNATIONAL
STANDARD
colour
inside
Wind energy generation systems –
Part 27-2: Electrical simulation models – Model validation
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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International Standards for all electrical, electronic and related technologies.

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IEC 61400-27-2 ®
Edition 1.0 2020-07
INTERNATIONAL
STANDARD
colour
inside
Wind energy generation systems –

Part 27-2: Electrical simulation models – Model validation

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.180 ISBN 978-2-8322-8506-0

– 2 – IEC 61400-27-2:2020  IEC 2020
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 10
2 Normative references . 10
3 Terms, definitions, abbreviations and subscripts . 11
3.1 Terms and definitions . 11
3.2 Abbreviations and subscripts . 15
3.2.1 Abbreviations . 15
3.2.2 Subscripts . 15
4 Symbols and units . 15
4.1 General . 15
4.2 Symbols (units) . 16
5 Functional specifications and requirements to validation procedures . 18
5.1 General . 18
5.2 General specifications . 18
5.3 Wind turbine model validation . 20
5.4 Wind power plant model validation . 20
6 General methodologies for model validation . 20
6.1 General . 20
6.2 Test results . 20
6.3 Simulations . 21
6.4 Signal processing . 21
6.4.1 General . 21
6.4.2 Time series processing . 21
6.4.3 Windows error statistics . 23
6.4.4 FRT windows specification . 24
6.4.5 Step response characteristics . 25
7 Validation of wind turbine models . 27
7.1 General . 27
7.2 Fault ride through capability . 27
7.2.1 General . 27
7.2.2 Test requirements . 28
7.2.3 Simulation requirements . 29
7.2.4 Validation results . 29
7.3 Active power control . 29
7.3.1 General . 29
7.3.2 Test requirements . 29
7.3.3 Simulation requirements . 30
7.3.4 Validation results . 30
7.4 Frequency control . 30
7.4.1 General . 30
7.4.2 Test requirements . 30
7.4.3 Simulation requirements . 31
7.4.4 Validation results . 31
7.5 Synthetic inertia control . 31
7.5.1 General . 31

7.5.2 Test requirements . 31
7.5.3 Simulation requirements . 32
7.5.4 Validation results . 32
7.6 Reactive power reference control . 32
7.6.1 General . 32
7.6.2 Test requirements . 32
7.6.3 Simulation requirements . 33
7.6.4 Validation results . 33
7.7 Reactive power – voltage reference control . 33
7.7.1 General . 33
7.7.2 Test requirements . 33
7.7.3 Simulation requirements . 33
7.7.4 Validation results . 34
7.8 Grid protection . 34
7.8.1 General . 34
7.8.2 Test requirements . 34
7.8.3 Simulation requirements . 34
7.8.4 Validation results . 35
8 Validation of wind power plant models . 35
8.1 General . 35
8.2 Active power control . 35
8.2.1 General . 35
8.2.2 Test requirements . 36
8.2.3 Simulation requirements . 36
8.2.4 Validation results . 36
8.3 Reactive power reference control . 36
8.3.1 General . 36
8.3.2 Test requirements . 37
8.3.3 Simulation requirements . 37
8.3.4 Validation results . 37
8.4 Reactive power – voltage reference control . 37
8.4.1 General . 37
8.4.2 Test requirements . 38
8.4.3 Simulation requirements . 38
8.4.4 Validation results . 38
Annex A (informative) Validation documentation for wind turbine model . 39
A.1 General . 39
A.2 Simulation model and validation setup information . 39
A.3 Template for validation results . 39
A.3.1 General . 39
A.3.2 Fault ride through capability . 40
A.3.3 Active power control . 42
A.3.4 Frequency control . 42
A.3.5 Synthetic inertia control . 43
A.3.6 Reactive power reference control . 43
A.3.7 Reactive power – voltage reference control . 44
A.3.8 Grid protection . 45
Annex B (informative) Validation documentation for wind power plant model. 46
B.1 General . 46
...

IEC 61400-27-2 ®
Edition 1.0 2020-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Wind energy generation systems –
Part 27-2: Electrical simulation models – Model validation

Systèmes de génération d’énergie éolienne –
Partie 27-2: Modèles de simulation électrique – Validation des modèles

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

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IEC 61400-27-2 ®
Edition 1.0 2020-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Wind energy generation systems –

Part 27-2: Electrical simulation models – Model validation

Systèmes de génération d’énergie éolienne –

Partie 27-2: Modèles de simulation électrique – Validation des modèles

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.180 ISBN 978-2-8322-1008-7

– 2 – IEC 61400-27-2:2020  IEC 2020
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 10
2 Normative references . 10
3 Terms, definitions, abbreviations and subscripts . 11
3.1 Terms and definitions . 11
3.2 Abbreviations and subscripts . 15
3.2.1 Abbreviations . 15
3.2.2 Subscripts . 15
4 Symbols and units . 15
4.1 General . 15
4.2 Symbols (units) . 16
5 Functional specifications and requirements to validation procedures . 18
5.1 General . 18
5.2 General specifications . 18
5.3 Wind turbine model validation . 20
5.4 Wind power plant model validation . 20
6 General methodologies for model validation . 20
6.1 General . 20
6.2 Test results . 20
6.3 Simulations . 21
6.4 Signal processing . 21
6.4.1 General . 21
6.4.2 Time series processing . 21
6.4.3 Windows error statistics . 23
6.4.4 FRT windows specification . 24
6.4.5 Step response characteristics . 25
7 Validation of wind turbine models . 27
7.1 General . 27
7.2 Fault ride through capability . 27
7.2.1 General . 27
7.2.2 Test requirements . 28
7.2.3 Simulation requirements . 29
7.2.4 Validation results . 29
7.3 Active power control . 29
7.3.1 General . 29
7.3.2 Test requirements . 29
7.3.3 Simulation requirements . 30
7.3.4 Validation results . 30
7.4 Frequency control . 30
7.4.1 General . 30
7.4.2 Test requirements . 30
7.4.3 Simulation requirements . 31
7.4.4 Validation results . 31
7.5 Synthetic inertia control . 31
7.5.1 General . 31

7.5.2 Test requirements . 31
7.5.3 Simulation requirements . 32
7.5.4 Validation results . 32
7.6 Reactive power reference control . 32
7.6.1 General . 32
7.6.2 Test requirements . 32
7.6.3 Simulation requirements . 33
7.6.4 Validation results . 33
7.7 Reactive power – voltage reference control . 33
7.7.1 General . 33
7.7.2 Test requirements . 33
7.7.3 Simulation requirements . 33
7.7.4 Validation results . 34
7.8 Grid protection . 34
7.8.1 General . 34
7.8.2 Test requirements . 34
7.8.3 Simulation requirements . 34
7.8.4 Validation results . 35
8 Validation of wind power plant models . 35
8.1 General . 35
8.2 Active power control . 35
8.2.1 General . 35
8.2.2 Test requirements . 36
8.2.3 Simulation requirements . 36
8.2.4 Validation results . 36
8.3 Reactive power reference control . 36
8.3.1 General
...