IEC TR 61850-7-5:2021

IEC TR 61850-7-5 ®
Edition 1.0 2021-04
TECHNICAL
REPORT
colour
inside
Communication networks and systems for power utility automation –
Part 7-5: IEC 61850 Modelling concepts
IEC TR 61850-7-5: 2021-04 (en)

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IEC TR 61850-7-5 ®
Edition 1.0 2021-04
TECHNICAL
REPORT
colour
inside
Communication networks and systems for power utility automation –

Part 7-5: IEC 61850 Modelling concepts

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.200 ISBN 978-2-8322-9647-9

– 2 – IEC TR 61850-7-5:2021  IEC 2021
CONTENTS
CONTENTS . 2
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 8
3.1 Terms and definitions. 8
3.2 Abbreviated terms . 8
4 Control . 8
4.1 Control authorization . 8
4.1.1 Basics . 8
4.1.2 Validating a control request . 9
4.1.3 Exclusive control authorization for one out of multiple actors of the
same level of control hierarchy . 12
4.1.4 Different control permissions for different actors of the same level of
control hierarchy . 13
4.2 Control authority for process equipment . 13
4.2.1 Control commands for process equipment from automations instead of
HMI . 13
5 Quality and its propagation . 15
5.1 Standard processing principle . 15
5.1.1 General . 15
5.1.2 Respecting behaviour . 15
5.1.3 LN specific calculations . 16
5.1.4 detailQual is not propagated . 16
5.1.5 Configurable propagation of the value of the element ‘source’ . 16
5.1.6 operatorBlocked is not propagated . 16
5.2 Special processing principle for (single phase) XCBR mapping to CSWI . 16
5.2.1 General . 16
5.2.2 Respecting the Behaviour . 18
5.2.3 LN specific calculations . 18
5.2.4 Propagation of detailQual . 18
5.2.5 Substitution of switchgear position signals . 18
5.2.6 operatorBlocked is not propagated . 19
5.3 Conclusion . 19
6 Health and its application . 20
6.1 General . 20
6.2 The use of LPHD.PhyHealth, LLN0.Health, LN.Health and LN.EEHealth . 20
6.3 Health in Proxy-IEDs, in LNs of type Mirror and in a LD hierarchy . 22
7 Special functions . 24
7.1 Use of cross domain schedules and scheduler . 24
7.1.1 Introduction . 24
7.1.2 Example 1 . 25
7.1.3 Example 2 . 28
8 Restoration of functions/communication after IED restart (power cycle) . 31
8.1 Functional description . 31

8.2 Priorities . 31
8.3 Stored and non-stored data. 31
Bibliography . 33

Figure 1 – Communication vs. application layer model for controls . 9
Figure 2 – Different levels of control authority (example) . 12
Figure 3 – Single-phase monitoring of the CB position . 17
Figure 4 – Examples of use of Health and EEHealth in models . 23
Figure 5 – FSCH and FSCC LN class . 24
Figure 6 – State Machine . 25
Figure 7 – Relation between schedule controller, schedules and entity scheduled . 25
Figure 8 – Use case charging architecture . 26
Figure 9 – LN instances and relationships in example 1 . 27
Figure 10 – Timelines associated to the example 1 . 27
Figure 11 – LN instances and relationships in example 2 . 28
Figure 12 – Timelines associated to the example 2 . 30

Table 1 – Dependence of checking Interlocking (IL) conditions on the control command
and on the server configuration . 10
Table 2 – Dependence of checking synchronism (CS) conditions on the control
command and on the server configuration . 11
Table 3 – Use case 1 definition . 14
Table 4 – Example of fixed rules: Boolean OR out of two input signals . 19
Table 5 – Health in IEC 61850-7-4 . 21
Table 6 – Examples for stored and non-stored data for restart . 32

– 4 – IEC TR 61850-7-5:2021  IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
COMMUNICATION NETWORKS AND SYSTEMS
FOR POWER UTILITY AUTOMATION –

Part 7-5: IEC 61850 Modelling concepts

FOREWORD
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IEC TR 61850
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