EN IEC 61850-7-410:2026
(Main)Communication networks and systems for power utility automation - Part 7-410: Basic communication structure - Hydroelectric power plants, steam and gas turbines - Logical node classes
- Abstract
This part of IEC 61850 specifies the logical node classes for use in the domain of hydroelectric power stations, steam and gas turbines.
This IEC61850 domain information model standard utilizes the existing Logical Node (LN) classes defined in IEC 61850-7-4, Basic communication structure – Compatible logical node classes and data object classes where possible, while defining new and extended domain specific LN classes to provide the necessary data objects for application to functions and systems in the domain of hydroelectric power stations, steam and gas turbines. The domain information model includes the interface towards a central operator centre’s control functions.
The Scope of this document, related to steam and gas turbine specifics, is limited to overall control functions and generator and turbine control functions. For hydroelectric power, the scope includes the entire power station automation system.
Edition 3 is intended to form a basis for extensions in local implementations. Such extensions may be defined in profiles. Many of the Logical Nodes defined in this document are designed to be suitable for use in domains beyond the scope of hydro power plants and steam and gas turbines. A suggested structure of the Logical Nodes into packages for integration with other domains is provided in Annex G (informative), Migration of this document to the future edition of IEC 61850.
- Status
- Published
- Publication Date
- 10-Sep-2026
- Technical Committee
- CLC/TC 57 - Power systems management and associated information exchange
- Drafting Committee
- IEC/TC 57 - IEC_TC_57
- Current Stage
- 6060 - Document made available - Publishing
- Start Date
- 11-Sep-2026
- Due Date
- 12-Sep-2022
- Completion Date
- 11-Sep-2026
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EN IEC 61850-7-410:2026 is the CENELEC European Standard for the IEC 61850 communication model used in hydroelectric power stations, steam turbines and gas turbines. It specifies logical node classes, data object semantics and related models for power utility automation, so engineers can describe equipment, control functions and plant states in a consistent way. For hydroelectric plants it covers the whole station automation system; for steam and gas turbines it focuses on overall control and generator/turbine control.
What does EN IEC 61850-7-410:2026 specify?
EN IEC 61850-7-410:2026 specifies logical node classes for use in the domain of hydroelectric power stations, steam and gas turbines. It reuses the Logical Node classes from IEC 61850-7-4 where possible and adds new or extended domain-specific classes where the existing model is not enough.
The standard also includes the interface toward a central operator centre’s control functions. In practice, that means it is not only about equipment naming - it also defines how control and supervision functions are represented in the IEC 61850 model.
For steam and gas turbines, the scope is limited to overall control functions and generator/turbine control functions. For hydroelectric power, the scope covers the entire power station automation system.
The document is organized into clauses on modelling concepts, asset models, operational functions, management functions, logical node classes, deprecated logical node classes, data object semantics, and common data classes. The annexes add modelling guidance, tagout and restriction modelling, plant modelling examples, and migration guidance.
| Annex | What it covers |
|---|---|
| Annex C | Modelling concepts for large power generation, including layered architecture and design concepts |
| Annex D | Supervision of a control task in the bottom layer and breakdown of a complex system |
| Annex E | Operational and maintenance tagouts and restrictions models |
| Annex F | Plant modelling use cases and design concepts for plant logical nodes |
| Annex G | Migration of this document to the future edition of IEC 61850 |
What are the key requirements of EN IEC 61850-7-410:2026?
EN IEC 61850-7-410:2026 is mainly a modelling standard. Its key requirements are about how to structure the plant model, how to represent operating states and control actions, and how to name the data objects that carry those meanings.
Clause 5 - modelling concepts and layered structure
Clause 5 defines the modelling concepts for large power generation facilities. It organizes the model into top layer, bottom layer and intermediate layer concepts, and it explains how these layers interact.
In practice, this matters because different functions belong at different levels. Plant-wide dispatch and coordination belong above, field measurements and actuations belong below, and the intermediate layer is used when a function is too complex to fit neatly in either place.
Clause 5 also introduces class categories for assets, management functions, operational functions, supporting functions and monitoring functions. That helps implementers decide which logical node family to use when they map a real plant function into IEC 61850.
Clause 6 - asset models and unit state behaviour
Clause 6 defines the large power generation composition model and the unit state diagram. The state model extends the IEC 60545 state model and is represented through the OpSt data object, with control through OpStCtl and transition indication through OpStChgInd.
In practice, this means a unit is not just described as “running” or “stopped”. The model supports steady states, transitional states, and locally defined sub-states, which is important for start-up, shutdown, synchronizing and disturbed-operation scenarios.
Clause 6 also explains generating modes such as grid operation, island operation and isolated operation, and it describes generating services such as line charging and house load. That gives a common vocabulary for how a unit is connected to the grid and what special service it is providing.
Clause 7 - operational functions
Clause 7 separates operational functions into analogue control and state change. It covers setpoint handling, setpoint deviation alarms, and the use of a data object for a control setpoint together with upper and lower limits.
In practice, this tells implementers how to represent a control loop in IEC 61850 terms. If a function uses a setpoint, the model must also show how the actual value is compared to that target and when deviation becomes an alarm.
Clause 7 also specifies operational functions for balancing reserve, power factor, reactive power and state transitions. For readers, that means the standard covers the control behaviors commonly needed for generation units, not just their static description.
Clause 8 - management functions
Clause 8 specifies management functions at joint control level, unit level and machine level, including hydro device management. It also defines how management logical nodes refer to the assets and operational functions they manage.
This matters because plant control often needs to coordinate several units or subsystems at once. Clause 8 gives the model for that coordination, including the use of AstRef for asset references and the reference data objects used for operational functions such as active power requests or differential active power requests.
Clause 8 also applies a suffix rule to reference data objects, so the name of the reference follows the suffix of the setpoint object in the referenced function. In practice, that keeps the references aligned and makes multi-level control models easier to read and implement.
Clauses 9 to 12 - logical node classes, deprecations, semantics and common data classes
Clause 9 lists the logical node classes, grouped by function: assets, management, operational, supporting, monitoring, control and supervision, primary equipment, functional blocks, generic function references, non-process interfaces, protections, supervision functions and transducers. Clause 10 lists deprecated logical node classes.
This is the core reference for implementation work. It tells a designer which logical node belongs to a turbine, gate, governor, excitation system, limiter, supervision function or protection function, and it also warns which older names are deprecated.
Clause 11 defines data object name semantics and enumerated data attribute types. Clause 12 defines common data classes, including analogue settings, controls and DAEnums. These clauses matter because interoperability depends on using the same object names and the same enumerated meanings.
Annex E - tagouts and restrictions
Annex E gives the model principles and requirements for operational and maintenance tagouts and restrictions. In practice, it supports lockout/tagout style modelling for safe maintenance and controlled operation.
Annex F - plant modelling guidance
Annex F provides plant modelling examples and design concepts for plant logical nodes. It is useful when a plant has multiple generating units, reservoirs in series, or pumped storage arrangements and the implementer needs to decide how to structure the plant-level model.
What terms does EN IEC 61850-7-410:2026 define?
- Logical Node (LN) - A functional IEC 61850 model element used to represent a plant asset, control function or supervision function with standardized data objects.
- Operational state (OpSt) - The enumerated steady state of a unit; Clause 6 uses it to represent conditions such as standstill, generating and synchronous condenser operation.
- Operational state control (OpStCtl) - The command data object used to request a change of operational state.
- Generating mode (GnMod) - The mode used when a unit is in generating state, such as grid operation, island operation or isolated operation.
- Generating service (GnSvc) - A special service such as line charging or house load that is explicitly requested for a unit in generating-related operation.
- Asset reference (AstRef) - The reference data object used by management functions to point to the asset logical nodes they manage.
- Control setpoint (Spt) - The setpoint data object family used to carry the requested target value for an operational or management function.
Who uses EN IEC 61850-7-410:2026?
EN IEC 61850-7-410:2026 is used by engineers, system integrators, OEMs, utility automation teams and specification writers working on hydroelectric power stations, steam turbines and gas turbines. It is also relevant to quality managers and buyers who need to define what a plant communication model must contain.
Typical uses include:
- mapping plant equipment to IEC 61850 logical nodes
- defining control and supervision interfaces
- specifying unit state and mode models
- designing plant-wide and unit-level coordination
- preparing profiles and local extensions
- checking interoperability between control systems and plant assets
What changed in EN IEC 61850-7-410:2026 from the previous edition?
EN IEC 61850-7-410:2026 supersedes EN 61850-7-410:2013 and EN 61850-7-410:2013/A1:2016. The foreword states that the IEC text was approved by CENELEC without modification.
Which standards are used with EN IEC 61850-7-410:2026?
EN IEC 61850-7-410:2026 relies on a broad set of related standards and technical specifications to define terminology, modelling rules and domain background.
- IEC 61850-7-4 - Provides the compatible logical node classes and data object classes that this part reuses where possible.
- IEC 61850-7-1 - Supplies the principles and models for the basic communication structure.
- IEC 61850-7-3 - Defines common data classes used across IEC 61850 models.
- IEC 61850-5 - Gives the communication requirements for functions and device models.
- IEC 61850-7-6 - Gives guidance for defining Basic Application Profiles.
- IEC TS 61850-1-2 and IEC TS 61850-2 - Support extension guidance and glossary terms.
- IEC 60545 and IEC 61362 - Provide the hydraulic turbine commissioning, operation and governing-system background used in the unit and control models.
- IEC 62270 and IEC/IEEE 63198-2775 - Add hydroelectric automation and smart hydro guidance.
- ISO/IEC 81346 - Supports structuring principles and reference designations.
- IEEE 421.1 and IEEE 421.5 - Provide excitation-system definitions and model references.
- ANSI/ASSP Z244.1 - Supports hazardous-energy control, lockout/tagout and alternative methods.
What does the EN IEC 61850-7-410:2026 document contain?
The document contains layered modelling concepts, plant composition models, a generating-unit state machine, and detailed operational and management function examples. It also includes figures for setpoint patterns, control behaviour, state transitions, load dispatch, excitation and hydro management, plus class diagrams for the logical node packages.
Clause 9 is the main catalogue of logical nodes, and Clause 10 lists deprecated logical nodes for backward compatibility. Clauses 11 and 12 add the data object naming semantics, enumerations and common data classes needed to implement those logical nodes consistently.
The annexes add practical modelling guidance: Annex E covers tagouts and restrictions, Annex F illustrates plant configuration and plant LN design choices, and Annex G discusses migration toward the future IEC 61850 edition.
Relations
- Effective Date
- 28-Sep-2021
- Effective Date
- 28-Sep-2021
- Effective Date
- 11-Aug-2026
- Effective Date
- 11-Aug-2026
- Effective Date
- 11-Aug-2026
- Effective Date
- 11-Aug-2026
- Effective Date
- 11-Aug-2026
- Effective Date
- 11-Aug-2026
- Effective Date
- 11-Aug-2026
- Effective Date
- 11-Aug-2026
- Effective Date
- 11-Aug-2026
- Effective Date
- 11-Aug-2026
- Effective Date
- 11-Aug-2026
- Effective Date
- 11-Aug-2026
- Refers
IEC 60050-351:2013 - International Electrotechnical Vocabulary (IEV) - Part 351: Control technology - Effective Date
- 11-Aug-2026
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Frequently Asked Questions
EN IEC 61850-7-410:2026 is a standard published by CLC. Its full title is "Communication networks and systems for power utility automation - Part 7-410: Basic communication structure - Hydroelectric power plants, steam and gas turbines - Logical node classes". This standard covers: This part of IEC 61850 specifies the logical node classes for use in the domain of hydroelectric power stations, steam and gas turbines. This IEC61850 domain information model standard utilizes the existing Logical Node (LN) classes defined in IEC 61850-7-4, Basic communication structure – Compatible logical node classes and data object classes where possible, while defining new and extended domain specific LN classes to provide the necessary data objects for application to functions and systems in the domain of hydroelectric power stations, steam and gas turbines. The domain information model includes the interface towards a central operator centre’s control functions. The Scope of this document, related to steam and gas turbine specifics, is limited to overall control functions and generator and turbine control functions. For hydroelectric power, the scope includes the entire power station automation system. Edition 3 is intended to form a basis for extensions in local implementations. Such extensions may be defined in profiles. Many of the Logical Nodes defined in this document are designed to be suitable for use in domains beyond the scope of hydro power plants and steam and gas turbines. A suggested structure of the Logical Nodes into packages for integration with other domains is provided in Annex G (informative), Migration of this document to the future edition of IEC 61850.
This part of IEC 61850 specifies the logical node classes for use in the domain of hydroelectric power stations, steam and gas turbines. This IEC61850 domain information model standard utilizes the existing Logical Node (LN) classes defined in IEC 61850-7-4, Basic communication structure – Compatible logical node classes and data object classes where possible, while defining new and extended domain specific LN classes to provide the necessary data objects for application to functions and systems in the domain of hydroelectric power stations, steam and gas turbines. The domain information model includes the interface towards a central operator centre’s control functions. The Scope of this document, related to steam and gas turbine specifics, is limited to overall control functions and generator and turbine control functions. For hydroelectric power, the scope includes the entire power station automation system. Edition 3 is intended to form a basis for extensions in local implementations. Such extensions may be defined in profiles. Many of the Logical Nodes defined in this document are designed to be suitable for use in domains beyond the scope of hydro power plants and steam and gas turbines. A suggested structure of the Logical Nodes into packages for integration with other domains is provided in Annex G (informative), Migration of this document to the future edition of IEC 61850.
EN IEC 61850-7-410:2026 is classified under the following ICS (International Classification for Standards) categories: 33.200 - Telecontrol. Telemetering. The ICS classification helps identify the subject area and facilitates finding related standards.
EN IEC 61850-7-410:2026 has the following relationships with other standards: It is inter standard links to EN 61850-7-410:2013/A1:2016, EN 61850-7-410:2013, EN 61850-7-1:2011/A1:2020, EN 61850-7-1:2011, EN 62270:2004, EN 61850-7-3:2011, EN 60041:1994, EN 61850-5:2013, EN IEC 61362:2024, EN 61850-7-4:2010/A1:2020, EN IEC 60545:2021, EN 61850-7-3:2011/A1:2020, EN IEC 61850-7-420:2021, EN 61850-7-4:2010, IEC 60050-351:2013. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN IEC 61850-7-410:2026 is associated with the following European legislation: Standardization Mandates: M/490. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
EN IEC 61850-7-410:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2026
Nadomešča:
SIST EN 61850-7-410:2013
SIST EN 61850-7-410:2013/A1:2016
Komunikacijska omrežja in sistemi za avtomatizacijo uporabe električne energije -
7-410. del: Osnovna komunikacijska struktura - Hidroelektrarne, parne in plinske
turbine – Razredi logičnih vozlišč (IEC 61850-7-410:2026)
Communication networks and systems for power utility automation - Part 7-410: Basic
communication structure - Hydroelectric power plants, steam and gas turbines - Logical
node classes (IEC 61850-7-410:2026)
Kommunikationsnetze und -systeme für die Automatisierung in der elektrischen
Energieversorgung - Teil 7-410: Grundlegende Kommunikationsstruktur -
Wasserkraftwerke - Kommunikation für Überwachung, Regelung und Steuerung (IEC
61850-7-410:2026)
Réseaux et systèmes de communication pour l'automatisation des systèmes électriques
- Partie 7-410: Structure de communication de base - Centrales hydroélectriques -
Communication pour le contrôle-commande (IEC 61850-7-410:2026)
Ta slovenski standard je istoveten z: EN IEC 61850-7-410:2026
ICS:
27.140 Vodna energija Hydraulic energy engineering
29.240.30 Krmilna oprema za Control equipment for electric
elektroenergetske sisteme power systems
33.200 Daljinsko krmiljenje, daljinske Telecontrol. Telemetering
meritve (telemetrija)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 61850-7-410
NORME EUROPÉENNE
EUROPÄISCHE NORM September 2026
ICS 33.200 Supersedes EN 61850-7-410:2013; EN 61850-7-
410:2013/A1:2016
English Version
Communication networks and systems for power utility
automation - Part 7-410: Basic communication structure -
Hydroelectric power plants, steam and gas turbines - Logical
node classes
(IEC 61850-7-410:2026)
Réseaux et systèmes de communication pour Kommunikationsnetze und -systeme für die
l'automatisation des systèmes électriques - Partie 7-410: Automatisierung in der elektrischen Energieversorgung -
Structure de communication de base - Centrales Teil 7-410: Grundlegende Kommunikationsstruktur -
hydroélectriques - Communication pour le contrôle- Wasserkraftwerke - Kommunikation für Überwachung,
commande Regelung und Steuerung
(IEC 61850-7-410:2026) (IEC 61850-7-410:2026)
This European Standard was approved by CENELEC on 2026-08-20. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61850-7-410:2026 E
European foreword
The text of document 57/2885/FDIS, future edition 3 of IEC 61850-7-410, prepared by TC 57 "Power
systems management and associated information exchange" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN IEC 61850-7-410:2026.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2027-09-30
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2029-09-30
document have to be withdrawn
This document supersedes EN 61850-7-410:2013 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a standardization request addressed to CENELEC by the
European Commission. The Standing Committee of the EFTA States subsequently approves these
requests for its Member States.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61850-7-410:2026 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 standard indicated:
IEC 61400-25-2 NOTE Approved as EN 61400-25-2
IEC 61850-6:2009 NOTE Approved as EN 61850-6:2010 (not modified)
IEC 61850-6:2009/AMD2:2024 NOTE Approved as EN 61850-6:2010/A2:2025 (not modified)
IEC 61850-10 NOTE Approved as EN 61850-10
IEC 61970-301 NOTE Approved as EN IEC 61970-301
IEC 62264-1:2013 NOTE Approved as EN 62264-1:2013 (not modified)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60034 2022 Rotating electrical machines - Part 1: - -
Rating and performance
IEC 60041 1991 Field acceptance tests to determine the EN 60041 1994
hydraulic performance of hydraulic
turbines, storage pumps and pump-
turbines
+ corrigendum Mar. 1996 - -
IEC 60050-351 2013 International Electrotechnical Vocabulary - - -
Part 351: Control technology
IEC 60545 2021 Guidelines for commissioning and EN IEC 60545 2021
operation of hydraulic turbines, pump-
turbines and storage pumps
IEC 61362 2024 Guidelines to specification of hydraulic EN IEC 61362 2024
turbine governing systems
IEC/TS 61850-1-2 2020 Communication networks and systems for - -
power utility automation - Part 1-2:
Guideline on extending IEC 61850
+ A1 2022
IEC/TS 61850-2 2019 Communication networks and systems in - -
substations - Part 2: Glossary
IEC 61850-5 2013 Communication networks and systems for EN 61850-5 2013
power utility automation - Part 5:
Communication requirements for functions
and device models
IEC 61850-7-1 2011 Communication networks and systems for EN 61850-7-1 2011
power utility automation - Part 7-1: Basic
communication structure - Principles and
models
+ A1 2020 + A1 2020
IEC 61850-7-3 2010 Communication networks and systems for EN 61850-7-3 2011
power utility automation - Part 7-3: Basic
communication structure - Common data
classes
+ A1 2020 + A1 2020
IEC 61850-7-4 2010 Communication networks and systems for EN 61850-7-4 2010
power utility automation - Part 7-4: Basic
communication structure - Compatible
logical node classes and data object
classes
+ A1 2020 + A1 2020
IEC 61850-7-6 2024 Communication networks and systems for - -
power utility automation - Part 7-6:
Guideline for definition of Basic Application
Profiles (BAPs) using IEC 61850
IEC 61850-7-420 2021 Communication networks and systems for EN IEC 61850-7- 2021
power utility automation - Part 7-420: Basic 420
communication structure - Distributed
energy resources and distribution
automation logical nodes
IEC/TR 61850-7- 2017 Communication networks and systems for - -
500 power utility automation - Part 7-500: Basic
information and communication structure -
Use of logical nodes for modeling
application functions and related concepts
and guidelines for substations
ISO/IEC 81346 series Industrial systems, installations and - -
equipment and industrial products -
Structuring principles and reference
designations
IEC 62270 2013 Hydroelectric power plant automation - - -
Guide for computer-based control
IEC 62361-103 2013 Power systems management and - -
associated information exchange -
Interoperability in the long term - Part 103:
Standard profiling
IEC/IEEE 63198- 2023 Technical guidelines for smart - -
2775 hydroelectric power plant
IEC 63200 2021 Definition of extended SGAM smart energy - -
grid reference architecture model
IEEE 421.1-2021 - IEEE Standard Definitions for Excitation - -
Systems for Synchronous Machines
IEEE 421.5-2016 - IEEE Recommended Practice for - -
Excitation System Models for Power
System Stability Studies
ANSI/ASSP Z244.1 2024 The Control Of Hazardous Energy - - -
Lockout, Tagout, And Alternative Methods
IEC 61850-7-410 ®
Edition 3.0 2026-07
INTERNATIONAL
STANDARD
Communication networks and systems for power utility automation -
Part 7-410: Basic communication structure - Hydroelectric power plants, steam
and gas turbines - Logical node classes
ICS 33.200 ISBN 978-2-8327-1365-5
IEC 61850-7-410:2026-07(en)
IEC 61850-7-410:2026 © IEC 2026
CONTENTS
FOREWORD . 24
INTRODUCTION . 27
1 Scope . 28
1.1 General . 28
1.2 Published versions of the standard and related namespace names . 28
1.3 Identification of the Code Component(s) . 28
1.3.1 Identification of the namespace description . 28
1.4 Code Component distribution . 29
1.5 Application of the logical node classes . 30
2 Normative references . 30
3 Terms and definitions . 31
4 Abbreviated terms. 31
4.1 General . 31
4.2 Deprecated abbreviations . 44
5 Concepts and constructs for modelling large power generation domains . 46
5.1 Modelling concepts for large power generation facilities . 46
5.1.1 Overview . 46
5.1.2 Stakeholders . 48
5.1.3 Large power generation information capabilities . 49
5.1.4 Domain specificities, profile enabling . 49
5.1.5 Concept of class categories for large power generation . 50
5.1.6 Concept of a layered model for large power generation . 59
5.2 Top layer model and its components . 64
5.2.1 Generic large power generation model breakdown . 64
5.2.2 Interaction mechanisms between top layer components . 67
5.3 Bottom layer model and its components . 74
5.3.1 General. 74
5.3.2 Field layer . 74
5.3.3 Edge-control layer . 74
5.4 Intermediate layer . 76
6 Domain specific asset models . 78
6.1 Large power generation composition model . 78
6.1.1 General. 78
6.1.2 Mechanical rotating machine models . 79
6.1.3 Electrical rotating machine . 81
6.2 Unit state diagram . 82
7 Operational functions . 87
7.1 General . 87
7.2 Operational functions for analogue control . 87
7.2.1 Information processing patterns in analogue control . 87
7.2.2 Setpoint handler and associated data objects . 92
7.2.3 Setpoint deviation alarm . 92
7.2.4 Utilization of a data object for control setpoint, upper limit, and lower
limit . 93
7.2.5 Specifications for individual operational functions . 94
7.3 Operational functions for state change . 96
IEC 61850-7-410:2026 © IEC 2026
7.3.1 General. 96
7.3.2 Issuing state transition commands regardless of asset state . 97
7.3.3 Time target for operational state transition . 97
8 Management functions . 98
8.1 General . 98
8.2 Joint control level management . 99
8.3 Unit level management and machine level management . 100
8.3.1 General. 100
8.3.2 Selection and processing of requests according to priorities . 101
8.3.3 Analogue control management . 103
8.3.4 State change management . 107
8.4 Hydro device management . 109
9 Logical node classes (LogicalNodes_7_410) . 112
9.1 General . 112
9.2 Logical nodes for assets (Assets_7_410) . 113
9.2.1 General. 113
9.2.2 <> LN: Electrical rotating machine Name:
ElectricalRotatingMachineLN. 117
9.2.3 <> LN: Synchronous machine excitation Name:
ExcitationSystemLN . 119
9.2.4 <> LN: Hydropower control Name: HydroControlLN . 120
9.2.5 <> LN: Hydropower non control Name: HydroNonControlLN . 122
9.2.6 <> LN: Rotating machine bearing Name: MachineBearingLN . 123
9.2.7 <> LN: Prime mover - generator transmission system Name:
MechTransmissionLN . 124
9.2.8 <> LN: On-off controllable asset Name:
OnOffControlAssetLN . 125
9.2.9 <> LN: Open-closed-related controllable assets Name:
OpenClosedControlAssetLN . 127
9.2.10 <> LN: Basic asset operating mode LN Name:
BasicAssetOpModeLN . 128
9.2.11 <> LN: Clutch system Name: ClutchLN. 129
9.2.12 <> LN: Machine deceleration Name: DecelerationLN . 131
9.2.13 LN: Synchronous machine field Name: HSMF . 132
9.2.14 LN: Shaft seal system Name: HSSL . 133
9.2.15 LN: Surge shaft/tank Name: HSST . 135
9.2.16 LN: Guide vanes (wicket gate) Name: HTGV . 136
9.2.17 LN: Runner blades Name: HTRB . 138
9.2.18 LN: Trash rack Name: HTRK . 140
9.2.19 LN: Hydro prime mover - generator transmission system Name: HTRM. 141
9.2.20 LN: Turbine Name: HTUR . 142
9.2.21 <> LN: Unit asset LN Name: PowerGenerationUnitLN . 146
9.2.22 <> LN: Rotating machine LN Name: RotatingMachineLN . 148
9.2.23 <> LN: Shaft seal LN Name: ShaftSealLN. 150
9.2.24 <> LN: Synchronous machine field Name:
SynchMachineFieldLN . 151
9.2.25 <> LN: Thermal turbine Name: ThermalTurbineLN . 152
9.2.26 <> LN: Hydro operating device LN Name:
HydroOperatingDeviceLN . 154
9.2.27 LN: Turbine generator shaft bearing Name: EBRG . 156
IEC 61850-7-410:2026 © IEC 2026
9.2.28 LN: Clutch system for thermal power units Name: ECTH . 157
9.2.29 LN: Synchronous machine excitation for thermal power unit Name:
EEXT . 158
9.2.30 LN: Fuel control valve Name: EFCV . 159
9.2.31 LN: Electrical rotating machine (synchronous/asynchronous generator)
for thermal power units Name: EGEN . 161
9.2.32 LN: Thermal governor Name: EGOV . 163
9.2.33 LN: Gas turbine unit Name: EGTU . 164
9.2.34 LN: Steam control valve Name: ESCV . 166
9.2.35 LN: Synchronous machine field Name: ESMF . 167
9.2.36 LN: Shaft seal system Name: ESSL . 169
9.2.37 LN: Steam turbine unit Name: ESTU . 170
9.2.38 LN: Turning-gear system Name: ETGR . 172
9.2.39 LN: Thermal prime mover - generator transmission system Name:
ETRM . 173
9.2.40 LN: Thermal power unit Name: EUNT . 174
9.2.41 LN: Turbine - generator shaft bearing Name: HBRG . 177
9.2.42 LN: Waterway canal Name: HCNL . 178
9.2.43 LN: Crest spillway Name: HCSW . 179
9.2.44 LN: Clutch system for hydro power units Name: HCTH . 180
9.2.45 LN: Braking (counter) nozzle Name: HCTN . 181
9.2.46 LN: Hydropower dam Name: HDAM . 183
9.2.47 LN: Deflector Name: HDFL . 184
9.2.48 LN: Synchronous machine excitation for hydro power unit Name:
HEXT. 186
9.2.49 LN: Electrical rotating machine (synchronous/asynchronous generator,
motor or motorgenerator) for hydro power units Name: HGEN . 187
9.2.50 LN: Hydro governor Name: HGOV . 188
9.2.51 LN: Hydropower gate Name: HGTE . 190
9.2.52 LN: Mechanical brake Name: HMBR . 192
9.2.53 LN: Needle Name: HNDL . 193
9.2.54 LN: Penstock Name: HPSK . 196
9.2.55 LN: Pony motor starter Name: HPYM . 197
9.2.56 LN: Hydropower water reservoir Name: HRES. 198
9.2.57 LN: Hydro power unit LN Name: HUNT . 199
9.2.58 LN: Hydropower valve Name: HVLV . 203
9.3 Logical nodes for management functions (ManagementFunctions_7_410) . 205
9.3.1 General. 205
9.3.2 <> LN: Electrical aspects management function Name:
ElectricityMgmtFunLN . 207
9.3.3 <> LN: Generating unit management function LN Name:
GeneratingUnitMgmtFunLN . 212
9.3.4 <> LN: Mechanical machine management function
LN Name: MechanicalMachineMgmtFunLN . 215
9.3.5 <> LN: Joint control for power management Name:
JointControlMgmtFunLN . 216
9.3.6 <> LN: Bulk generation management function LN Name:
BulkGenerationMgmtFunLN . 220
9.3.7 <> LN: Thermal machine management function Name:
ThermalMachineMgmtFunLN . 221
9.3.8 LN: Electrical rotating machine management Name: AEMC . 226
IEC 61850-7-410:2026 © IEC 2026
9.3.9 LN: Gas turbine management Name: EGTM . 229
9.3.10 LN: Joint control for thermal power plant management Name: EJCM . 232
9.3.11 LN: Steam turbine management Name: ESTM. 235
9.3.12 LN: Thermal unit management Name: EUMC . 239
9.3.13 LN: Hydro machine management Name: HMMC . 243
9.3.14 LN: Management function for hydro device (gates, valves) Name:
HHDM. 247
9.3.15 LN: Joint control for hydro power plant management Name: HJCM . 251
9.3.16 LN: Hydro unit management Name: HUMC . 256
9.4 Logical nodes for operational functions (OperationalFunctions_7_410) . 260
9.4.1 General. 260
9.4.2 <> LN: Active power operational function LN Name:
ActivePowerOpFunLN . 266
9.4.3 <> LN: Analogue control operational function LN Name:
AnalogueControlOpFunLN . 269
9.4.4 <> LN: Operational function for bulk generation LN Name:
BulkGenerationOpFunLN . 273
9.4.5 <> LN: Electrical operation function LN Name:
ElectricalOpFunLN . 274
9.4.6 <> LN: Energy operational function LN Name:
EnergyOpFunLN . 276
9.4.7 <> LN: Excitation operational function LN Name:
ExcitationOpFunLN . 278
9.4.8 <> LN: Flow for thermal power operational function
LN Name: FlowForThermalPowerOpFunLN . 279
9.4.9 <> LN: Hydro operational function LN Name:
HydroOpFunLN . 282
9.4.10 <> LN: Level operational function LN Name: LevelOpFunLN. 284
9.4.11 <> LN: Mechanical operational function LN Name:
MechanicalOpFunLN . 286
9.4.12 <> LN: Opening operational function LN Name:
OpeningOpFunLN . 288
9.4.13 <> LN: Operational transition operational function Name:
OperationalTransitionOpFunLN . 290
9.4.14 <> LN: Power factor operational function LN Name:
PowerFactorOpFunLN . 292
9.4.15 <> LN: Power system stabilisation operational function
LN Name: PowerSystemStabilisationOpFunLN . 294
9.4.16 <> LN: Pressure operational function LN Name:
PressureOpFunLN . 297
9.4.17 <> LN: Reactive power operational function LN Name:
ReactivePowerOpFunLN . 299
9.4.18 <> LN: Speed operational function LN Name:
SpeedOpFunLN . 301
9.4.19 <> LN: State change operational function LN Name:
StateChangeOpFunLN. 303
9.4.20 <> LN: Temperature operational function LN Name:
TemperatureOpFunLN . 305
9.4.21 <> LN: Thermal operational function LN Name:
ThermalOpFunLN . 307
9.4.22 <> LN: Voltage operational function LN Name:
VoltageOpFunLN . 309
9.4.23 <> LN: Water flow operational function LN Name:
WaterFlowOpFunLN . 311
IEC 61850-7-410:2026 © IEC 2026
9.4.24 LN: Switching control for electrical braking Name: AEBR . 313
9.4.25 LN: Energy control operational function Name: AENC . 314
9.4.26 LN: Minimum energy limitation operational function Name: AENN . 316
9.4.27 LN: Maximum energy limitation operational function Name: AENX . 318
9.4.28 LN: State/mode control for electric rotating machine Name: AESC . 320
9.4.29 LN: Field current regulation operational function Name: AFCR . 322
9.4.30 LN: Switching control for field flashing Name: AFFL . 324
9.4.31 LN: Field voltage regulation operational function Name: AFVR. 325
9.4.32 LN: Overexcitation limitation operational function Name: AOEL . 327
9.4.33 LN: Minimum opening limitation operational function Name: AOMN . 329
9.4.34 LN: Maximum opening limitation operational function Name: AOMX . 331
9.4.35 LN: Opening control operational function Name: AOPC . 333
9.4.36 LN: Power factor control operational function Name: APFC . 335
9.4.37 LN: Power factor limitation operational function Name: APFL . 337
9.4.38 LN: PSS 4 filter function Name: APSF . 339
9.4.39 LN: PSS 2 filter function Name: APST . 347
9.4.40 LN: Reactive power control operational function Name: AQCL . 352
9.4.41 LN: Minimum reactive power limitation operational function Name:
AQMN. 354
9.4.42 LN: Maximum reactive power limitation operational function Name:
AQMX . 356
9.4.43 LN: Balancing reserve operation Name: AROP . 358
9.4.44 LN: Stator current limitation operational function Name: ASCL . 360
9.4.45 LN: Minimum speed limitation operational function Name: ASMN . 362
9.4.46 LN: Maximum speed limitation operational function Name: ASMX . 364
9.4.47 LN: Speed control operational function Name: ASPC . 366
9.4.48 LN: Under excitation limitation operational function Name: AUEL . 368
9.4.49 LN: Flux limitation operational function Name: AVFL . 370
9.4.50 LN: Minimum voltage limitation operational function Name: AVMN . 371
9.4.51 LN: Maximum voltage limitation operational function Name: AVMX . 373
9.4.52 LN: Voltage control operational function Name: AVOC . 375
9.4.53 LN: Active power control operational function Name: AWGC . 377
9.4.54 LN: Minimum active power limitation operational function Name:
AWMN . 380
9.4.55 LN: Maximum active power limitation operational function Name:
AWMX . 382
9.4.56 LN: Flow control operational function for thermal power Name: EFLC . 384
9.4.57 LN: Minimum flow limitation operational function for thermal
power Name: EFMN . 385
9.4.58 LN: Maximum flow limitation operational function for thermal
power Name: EFMX . 387
9.4.59 LN: Load range transition of thermal unit operational function Name:
ELRC. 389
9.4.60 LN: Minimum pressure limitation operational function Name: EPMN . 391
9.4.61 LN: Maximum pressure limitation operational function Name: EPMX . 392
9.4.62 LN: Pressure control operational function Name: EPRC . 394
9.4.63 LN: Minimum temperature limitation operational function Name: ETMN . 396
9.4.64 LN: Maximum temperature limitation operational function Name: ETMX . 398
9.4.65 LN: State/mode control for thermal turbine and governor Name: ETSC . 400
9.4.66 LN: Temperature control operational function Name: ETPC . 402
IEC 61850-7-410:2026 © IEC 2026
9.4.67 LN: State/mode control for thermal unit Name: EUSC . 404
9.4.68 LN: Flow control operational function (hydropower) Name: HFLC . 405
9.4.69 LN: Minimum flow limitation operational function (hydropower) Name:
HFMN . 407
9.4.70 LN: Maximum flow limitation operational function (hydropower) Name:
HFMX . 409
9.4.71 LN: Minimum level limitation operational function Name: HLMN . 411
9.4.72 LN: Maximum level limitation operational function Name: HLMX . 413
9.4.73 LN: Level control operational function Name: HLVC . 415
9.4.74 LN: State/mode control for hydro turbine and governor Name: HTSC . 418
9.4.75 LN: State/mode control for hydro unit Name: HUSC . 419
9.5 Logical nodes for supporting functions (SupportingFunctions_7_410) . 421
9.5.1 General. 421
9.5.2 LN: Control mode selection Name: ACTM . 421
9.5.3 LN: Combinator Name: HCOM . 422
9.5.4 LN: Needle management Name: HNDM . 424
9.5.5 LN: Hydropower sequencer Name: HSEQ . 425
9.6 Logical nodes for monitoring functions (MonitoringFunctions_7_410) . 426
9.6.1 General. 426
9.6.2 <> LN: Machine speed monitoring Name:
MachineSpeedMonitoringLN. 427
9.6.3 LN: Thermal turbine speed monitoring Name: ESPD . 429
9.6.4 LN: Extension to the MFLW LN Name: MFLWExt . 431
9.6.5 LN: Leakage supervision Name: HLKG . 433
9.6.6 LN: Water level indicator Name: HLVL. 434
9.6.7 LN: Water net head data Name: HNHD . 435
9.6.8 LN: Hydro turbine speed monitoring Name: HSPD . 436
9.7 Logical nodes for control and supervision (ControlSupervision_7_410) . 438
9.7.1 General. 438
9.7.2 <> LN: Controller function Name: ControllerLN . 439
9.7.3 <> LN: On-Off controller function Name: OnOffControllerLN . 440
9.7.4 <> LN: Open close controller function Name:
OpenCloseControllerLN . 441
9.7.5 LN: Fan controller Name: CFAN . 443
9.7.6 LN: Fluidic valve controller Name: CFVL. 444
9.7.7 LN: Directly actuated hydraulic cylinder controller Name: CHCY . 446
9.7.8 LN: Heater controller Name: CHTR . 447
9.7.9 LN: Pump controller Name: CPMP . 448
9.7.10 LN: Turning gear controller Name: CTGR . 450
9.7.11 LN: Directly actuated valve controller Name: CVLV . 451
9.8 Logical nodes for primary equipment (PrimaryEquipment_7_410) . 452
9.8.1 General. 452
9.8.2 <> LN: Controllable equipment Name: ControlEqLN . 453
9.8.3 <> LN: Non-controllable equipment Name: NonControlEqLN . 454
9.8.4 <> LN: On-off controllable equipment Name:
OnOffControlEqLN . 455
9.8.5 <> LN: On-off non-controllable equipment Name:
OnOffNonControlEqLN . 456
9.8.6 <> LN: Position-related controllable equipment Name:
OpenClosedControlEqLN . 457
IEC 61850-7-410:2026 © IEC 2026
9.8.7 <> LN: Position-related non-controllable equipment Name:
OpenClosedNonControlEqLN . 459
9.8.8 LN: Brake pad Name: KBRP . 460
9.8.9 LN: Clutch Name: KCTH . 461
9.8.10 LN: Deflector Name: KDFL . 462
9.8.11 LN: Extension to the KFAN LN Name: KFANExt . 463
9.8.12 LN: Extension to the KFIL LN Name: KFILExt. 464
9.8.13 LN: Fluid sealing device (seal) Name: KFSL . 466
9.8.14 LN: Fluid valve Name: KFVL . 467
9.8.15 LN: Gate Name: KGTE . 468
9.8.16 LN: Penstock burst protection Name: KPBP . 469
9.8.17 LN: Extension to the KPMP LN Name: KPMPExt . 471
9.8.18 LN: Mechanical rotational speed protection Name: KSPP . 472
9.8.19 LN: Hydraulic cylinder Name: KHCY. 473
9.8.20 LN: Heater Name: KHTR . 474
9.8.21 LN: Turning-gear Name: KTGR . 476
9.8.22 LN: Guide vane (wicket gate) Name: KTGV. 477
9.8.23 LN: Extension to the KTNK LN Name: KTNKExt . 478
9.8.24 LN: Runner blade Name: KTRB . 479
9.8.25 LN: Extension to the KVLV LN Name: KVLVExt . 480
9.8.26 LN: Valve seal Name: KVSL . 482
9.8.27 LN: Synchronous machine armature (stator) Name: ZSMA . 483
9.8.28 LN: Synchronous machine field (rotor) Name: ZSMF . 484
9.8.29 LN: Semi-conductor uncontrolled rectifier Name: ZSUR . 485
9.9 Logical nodes for functional blocks (FunctionalBlocks_7_410) . 486
9.9.1 General. 486
9.9.2 LN: Deadband filter Name: FDBF . 487
9.9.3 LN: Functional heart beat Name: FHBT . 488
9.9.4 LN: Trip matrix Name: FMTX . 489
9.9.5 LN: Functional priority status Name: FXPS . 491
9.10 Logical nodes for generic function references (GenericFunctionRefs_7_410) . 492
9.10.1 General. 492
9.10.2 LN: Generic restriction tag Name: GRST . 493
9.10.3 LN: Generic lockout/tagout for maintenance and/or operation Name:
GTMO. 494
9.10.4 LN: Task manager Name: GTSK . 496
9.11 Logical nodes for interfacing and archiving (NonProcessInterfaces_7_410) . 497
9.11.1 General. 497
9.11.2 LN: Fire detection and alarm Name: IFIR . 497
9.11.3 LN: Hand interface Name: IHND . 498
9.11.4 <> LN: Alarm trip control Name: AlarmTripControlLN . 500
9.12 Logical nodes for protections of power plants (Protections_7_410) . 501
9.12.1 General. 501
9.12.2 LN: Detection of under impedance Name: PTUI . 502
9.13 Logical nodes for supervision and monitoring (SupervisionFunctions_7_410) . 503
9.13.1 General. 503
9.13.2 <> LN: Media supervision Name: MediaSupervisionLN . 505
9.13.3 LN: Brake pad supervision Name: SBRP . 507
9.13.4 LN: Electrical conductivity in water supervision Name: SECW . 508
...