IEC 60308:2024

Hydraulic turbines - Testing of governing systems

IEC 60308:2024 deals with the definition and the characteristics of control systems. It is not limited to the actual controller tasks but also includes other tasks which may be assigned to a control system, such as sequence control tasks, safety and provision for the actuating energy. The following systems are included, speed, power, opening, water level and flow control for all turbine types; electronic, electrical and fluid power devices; safety devices as well as start-up and shutdown devices. The significant technical changes introduced by the third edition are the adoption of parts of IEC 61362:2024 which deal with test matters and the introduction of new technical aspects.

Turbines hydrauliques - Essais des systèmes de régulation

IEC 60308:2024 traite de la définition et des caractéristiques des systèmes de régulation. Elle n'est pas limitée aux tâches effectives de régulation, mais inclut également d'autres tâches qui peuvent être assignées à un système de régulation, telles que les tâches de commande séquentielle, de sécurité, d'alimentation en énergie de manœuvre. La présente norme couvre les systèmes suivants : régulation de vitesse, puissance, ouverture, niveau d'eau et débit de tous types de turbines; dispositifs électroniques, électriques et d'alimentation en fluide; dispositifs de sécurité; dispositifs de démarrage, et dispositifs d'arrêt. Les changements significatifs introduits dans l’édition 3 sont l’adoption de parties de IEC 61362:2024 concernant les aspects de test et l’introduction plus générale de nouveaux aspects techniques.

General Information

• Status: Published
• Publication Date: 22-Sep-2024
• ICS: 27.140 - Hydraulic energy engineering
• Technical Committee: TC 4 - Hydraulic turbines
• Drafting Committee: WG 14 - TC 4/WG 14
• Current Stage: PPUB - Publication issued
• Start Date: 09-Aug-2024
• Completion Date: 23-Sep-2024

Relations

• Revises: IEC 60308:2005 - Hydraulic turbines - Testing of control systems
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60308 ®
Edition 3.0 2024-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Hydraulic turbines – Testing of governing systems

Turbines hydrauliques – Essais des systèmes de régulation

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
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni
utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et
les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Secretariat Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
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.

IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews, graphical symbols and the glossary.
committee, …). It also gives information on projects, replaced With a subscription you will always have access to up to date
and withdrawn publications. content tailored to your needs.

IEC Just Published - webstore.iec.ch/justpublished
Electropedia - www.electropedia.org
Stay up to date on all new IEC publications. Just Published
The world's leading online dictionary on electrotechnology,
details all new publications released. Available online and once
containing more than 22 500 terminological entries in English
a month by email.
and French, with equivalent terms in 25 additional languages.

Also known as the International Electrotechnical Vocabulary
IEC Customer Service Centre - webstore.iec.ch/csc
(IEV) online.
If you wish to give us your feedback on this publication or need

further assistance, please contact the Customer Service
Centre: [e-mail].
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Recherche de publications IEC -  IEC Products & Services Portal - products.iec.ch
webstore.iec.ch/advsearchform Découvrez notre puissant moteur de recherche et consultez
La recherche avancée permet de trouver des publications IEC gratuitement tous les aperçus des publications, symboles
en utilisant différents critères (numéro de référence, texte, graphiques et le glossaire. Avec un abonnement, vous aurez
comité d’études, …). Elle donne aussi des informations sur les toujours accès à un contenu à jour adapté à vos besoins.
projets et les publications remplacées ou retirées.

Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
Le premier dictionnaire d'électrotechnologie en ligne au monde,
Restez informé sur les nouvelles publications IEC. Just
avec plus de 22 500 articles terminologiques en anglais et en
Published détaille les nouvelles publications parues.
français, ainsi que les termes équivalents dans 25 langues
Disponible en ligne et une fois par mois par email.
additionnelles. Egalement appelé Vocabulaire

Electrotechnique International (IEV) en ligne.
Service Clients - webstore.iec.ch/csc

Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
[e-mail].
IEC 60308 ®
Edition 3.0 2024-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Hydraulic turbines – Testing of governing systems

Turbines hydrauliques – Essais des systèmes de régulation

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.140  ISBN 978-2-8322-9490-1

– 2 – IEC 60308:2024 © IEC 2024
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 Recommendations on tests . 9
4.1 General . 9
4.2 Recommendations on workshop tests . 9
4.3 Recommendations on field tests . 9
4.3.1 New governing systems . 9
4.3.2 Existing governing systems . 10
5 Governing system tests . 11
5.1 Test conditions to be fulfilled . 11
5.1.1 General . 11
5.1.2 Turbine operation conditions . 11
5.1.3 Hydraulic pressure unit condition . 11
5.1.4 Deviation of values from specified operating conditions . 11
5.1.5 Provisions for instruments . 12
5.1.6 Calibration of instruments . 12
5.2 Electrical checks . 12
5.2.1 General . 12
5.2.2 Selection of test location. 13
5.2.3 Power supply . 13
5.2.4 Overvoltage protection and suppression of interference voltage . 13
5.3 Test of the process interface system . 13
5.4 Test of converters, amplifiers and actuators . 14
5.4.1 Electrohydraulic and electromechanical converters . 14
5.4.2 Servomotors . 18
5.4.3 Dead time, insensitivity . 19
5.4.4 Provision of actuating energy . 19
5.4.5 Oil leakage . 20
5.4.6 Test of the positioning loop . 20
5.5 Tests of governor characteristics . 21
5.5.1 General . 21
5.5.2 Test of the governing system . 21
5.5.3 Determination of governing system’s parameters . 21
5.5.4 Test of main control loops . 23
5.5.5 Considerations for island grid field tests . 25
5.6 Servomotor pressure indication test . 28
5.7 Safety tests . 28
5.7.1 General . 28
5.7.2 Test strategy . 28
5.7.3 Test plan . 29
6 Inaccuracies in tests of governing systems . 29
7 Simulation of governing and control operations. 32
8 Organizational aspects of test management . 32

Annex A (informative) Test procedures . 34
A.1 Insensitivity test procedure . 34
A.2 Dead time test procedure . 34
A.3 Test procedure for the servomotor pressure indication . 35
A.4 Procedure for the measurement of the pressure and flow characteristics of
control valves . 35
Annex B (informative) Recommendation for testing of turbine governing systems . 37
Annex C (informative) Field test of governing systems . 41
C.1 General . 41
C.2 Data on operating conditions . 41
C.3 Pre-start tests prior to filling waterways . 41
C.4 Test after filling waterways. 42
C.5 Initial run . 42
C.6 No-load tests . 42
C.7 Load and load rejection tests . 43
C.8 Measurement and recordings . 43
Annex D (informative) Governing system test examples . 44
D.1 General . 44
D.2 Insensitivity test under speed control with X-Y recording (example referring
to 5.5.3.3.3 and Clause A.1 b)) . 44
D.3 Insensitivity test under opening control with frequency-opening-droop and
time characteristics (example referring to 5.5.3.3.4 and Clause A.1 a) . 46
D.4 Insensitivity test under power control with time characteristics (example
referring to 5.5.3.3.4 and Clause A.1 a) . 48
D.5 Synchronism test of two controlled quantities with X-Y recording (example
referring to 5.5.3.4) . 50
D.6 Measurement of a unit step response with PID speed controller (example
referring 5.5.4.2 and 5.5.3.1) . 51
D.7 Measurement of a unit step response with speed control for determination of
PID controller parameters (example referring to 5.5.4.2; 5.5.3.1) . 53
D.8 Measurement of a unit step response with speed control for determination of
PID controller parameters (example referring to 5.5.4.2; 5.5.5) . 55
D.9 Measurement of a unit step re
...