IEC TR 61850-7-510:2021

IEC TR 61850-7-510 ®
Edition 2.0 2021-12
TECHNICAL
REPORT
colour
inside
Communication networks and systems for power utility automation –
Part 7-510: Basic communication structure – Hydroelectric power plants, steam
and gas turbines – Modelling concepts and guidelines
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.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
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 online collection - oc.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. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc

If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
IEC TR 61850-7-510 ®
Edition 2.0 2021-12
TECHNICAL
REPORT
colour
inside
Communication networks and systems for power utility automation –

Part 7-510: Basic communication structure – Hydroelectric power plants, steam

and gas turbines – Modelling concepts and guidelines

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.200 ISBN 978-2-8322-1062-2

– 2 – IEC TR 61850-7-510:2021 © IEC 2021
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
2 Normative references . 10
3 Terms and definitions . 11
4 Overview . 11
4.1 General . 11
4.2 Target group . 11
4.3 Hydro power domain . 11
4.3.1 General . 11
4.3.2 Hydropower plant specific information . 11
4.4 Thermal power domain . 14
4.4.1 General . 14
4.4.2 Steam turbine power plant specific information . 14
4.4.3 Gas turbine specific information . 15
4.4.4 Combined cycle power plants . 16
4.4.5 Coal-fired power plant specific information . 17
5 Process modelling . 18
5.1 Reference designation system . 18
5.1.1 General . 18
5.1.2 Structuring principles and reference designation system . 18
5.1.3 Object ownership principle . 18
5.1.4 The concept of aspects . 19
5.1.5 The RDS-structure and classification . 20
5.1.6 Example: Unit 2 main inlet valve with a bypass system . 21
5.1.7 The top node . 21
5.2 SCL modelling of the functional structure of a hydropower plant . 23
5.3 Mapping the SCL Process structure to the reference designation system
RDS . 24
5.3.1 General . 24
5.3.2 Hierarchical mapping of information . 25
5.3.3 Process object reference design considerations . 27
5.3.4 Choice of logical node classes . 27
5.4 The Alpha Valley River System examples . 27
5.4.1 Introduction . 27
5.4.2 The Reservoirs . 29
5.4.3 Hydrometric . 31
6 SCL:DataType template modelling . 34
6.1 General . 34
6.2 LNodeType definition . 34
6.3 DOType definition . 35
6.4 DAType and EnumType definition . 36
6.5 Example using SLVL . 37
7 SCL:IED modelling . 37
7.1 General . 37
7.2 Linking the SCL:IED model to the SCL:process model . 37

7.3 Referencing the Logical Device . 37
7.4 SCL:Function element . 39
8 Communication Modelling . 39
8.1 General . 39
8.2 Communication structure in hydro power plants . 41
8.2.1 General . 41
8.2.2 Process bus level . 41
8.2.3 Station Bus . 42
8.2.4 Enterprise Bus . 42
8.3 Communication structure in thermal power plants . 42
9 Modelling of controls . 46
9.1 General . 46
9.2 Operational modes for hydropower plants . 46
9.3 Operational modes for thermal power plants . 47
9.4 Fundamental control strategies for hydropower plants. 47
9.5 Joint control modelling examples . 48
9.5.1 General . 48
9.5.2 Joint control of active power . 48
9.5.3 Joint Control of Reactive Power . 50
9.5.4 Joint Control of Water . 52
9.6 Scheduling Example . 53
9.7 Example of application for an excitation system . 54
9.7.1 General . 54
9.7.2 Voltage regulation example . 59
9.7.3 PSS example . 61
9.8 Example of application for a turbine governor system . 62
9.8.1 General . 62
9.8.2 Signal hierarchy . 62
9.8.3 Basic overview . 62
9.8.4 Detailed description of used IED structure . 64
9.9 Example of a braking system . 71
9.9.1 General . 71
9.9.2 Brake control with mandatory data objects in LN: HMBR . 71
9.9.3 Brake control with process indications . 72
9.10 Example of a heater system . 72
9.10.1 General . 72
9.10.2 Example of a LN: KHTR usage . 73
9.11 Examples of how to reference a start / stop sequencer of a hydropower unit . 73
9.11.1 General . 73
9.11.2 Unit sequences definition with IEC 61850 . 74
9.11.3 Start sequence from a state "stopped" to a state "speed no load not
excited" (Sequence 1). 75
9.11.4 Start sequence from state "speed no load not excited" to state

"synchronised" (Sequence 2) . 76
9.11.5 Stop sequence from state "synchronised" to state "speed no load not
excited" (sequence 3) . 78
9.11.6 Shutdown sequence from state " synchronised " to state "stopped"
(Sequence 4) . 79
9.11.7 Fast shutdown sequence from state " synchronised " to state "stopped"

(Sequence 5) . 82

– 4 – IEC TR 61850-7-510:2021 © IEC 2021
9.11.8 Emergency shutdown sequence from state " synchronised " to state
"stopped" (sequence 6). 84
9.12 Example of a capa
...