SIST EN IEC 61970-456:2018

Energy management system application program interface (EMS-API) - Part 456: Solved power system state profiles

This part of IEC 61970 belongs to the IEC 61970-450 to IEC 61970-499 series that, taken as
a whole, define at an abstract level the content and exchange mechanisms used for data
transmitted between power system analyses applications, control centers and/or control
center components.
The purpose of this document is to rigorously define the subset of classes, class attributes,
and roles from the CIM necessary to describe the result of state estimation, power flow and
other similar applications that produce a steady-state solution of a power network, under a set
of use cases which are included informatively in this standard.
This document is intended for two distinct audiences, data producers and data recipients, and
may be read from those two perspectives. From the standpoint of model export software used
by a data producer, the document describes how a producer may describe an instance of a
network case in order to make it available to some other program. From the standpoint of a
consumer, the document describes what that importing software must be able to interpret in
order to consume power flow cases.
There are many different use cases for which use of this document is expected and they differ
in the way that the document will be applied in each case. Implementers are expected to
consider what use cases they wish to cover in order to know the extent of different options
they must cover. As an example, this document will be used in some cases to exchange
starting conditions rather than solved conditions, so if this is an important use case, it means
that a consumer application needs to be able to handle an unsolved state as well as one
which has met some solution criteria.

Schnittstelle für Anwendungsprogramme für Netzführungssysteme (EMS-API) - Teil 456: Globale Stabilitätsbeurteilung

Interface de programmation d'application pour système de gestion d'énergie (EMS-API) - Partie 456: Profils d'état de réseaux électriques résolus

L'IEC 61970-456:2018(en-fr) définit de façon rigoureuse le sous-ensemble de classes, les attributs de classe et les rôles du CIM, nécessaires pour décrire le résultat de l'estimation d'état, du calcul de répartition et d'autres applications analogues produisant une solution en régime établi d'un réseau électrique dans un ensemble de cas d'utilisation inclus à titre informatif dans la présente norme. Le présent document s'adresse à deux destinataires distincts, les producteurs de données et les destinataires de données.
Cette nouvelle édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:

   
• Ajout du profil Steady State Hypothesis (SSH) (Hypothèse en régime établi).

   
• Meilleure description de la relation entre les différents profils et alignement sur la nomenclature actuelle utilisée avec les profils tels que “dataset” et “partie de réseau”.

   
• Extension de la description des cas d’utilisation.

Aplikacijski programski vmesnik za sistem upravljanja z energijo (EMS-API) - 456. del: Profili stanja sproščenega elektroenergetskega sistema

Ta del standarda IEC 61970 pripada skupini od IEC 61970-450 do IEC 61970-499, ki kot celota na abstraktni ravni določa vsebino in mehanizme izmenjave, ki se uporabljajo za podatke, prenesene med aplikacijami za analizo elektroenergetskega sistema, nadzornimi centri in/ali njihovimi komponentami.
Namen tega dokumenta je natančna definicija podmnožice razredov, atributov razredov in vlog v skupnem informacijskem modelu (CIM), potrebnih za opis rezultata ocenjevanja stanj, pretoka moči in drugih podobnih aplikacijah, ki ustvarijo ustaljeno rešitev napajalnega omrežja na podlagi množice primerov uporabe, ki jih ta standard informativno vključuje.
Ta dokument je namenjen dvema ločenima skupinama (proizvajalcem podatkom in prejemnikom podatkov) in se lahko tolmači z dveh vidikov. S stališča programske opreme za izvažanje modelov, ki jo uporablja proizvajalec podatkov, dokument opisuje, kako lahko proizvajalec opiše omrežni primer, da omogoči njegovo razpoložljivost drugemu programu. S stališča porabnika dokument opisuje, katere zmogljivosti tolmačenja mora vključevati programska oprema za uvažanje, da lahko porablja primere pretoka moči.
Obstajajo številni različni primeri uporabe, pri katerih se pričakuje uporaba tega dokumenta in ki se razlikujejo v načinu uporabe dokumenta. Od izvajalcev se pričakuje odločitev, katere primere uporabe želijo zajeti, da določijo obseg različnih možnosti, ki morajo biti vključene. Ta dokument se na primer uporabi v nekaterih primerih za izmenjavo začetnih pogojev namesto izpolnjenih pogojev. Če je to pomemben primer uporabe, to pomeni, da mora biti porabniška aplikacija zmožna obravnavati tako neizpolnjeno stanje kot tudi stanje, pri katerem so bili izpolnjeni nekateri kriteriji rešitve.

General Information

• Status: Published
• Publication Date: 06-Sep-2018
• ICS: 29.240.30 - Control equipment for electric power systems
• ICS: 35.200 - Interface and interconnection equipment
• Technical Committee: PSE - Power systems management
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 06-Jul-2018
• Due Date: 10-Sep-2018
• Completion Date: 07-Sep-2018
• Mandate: M/490 - Standardisation mandate to the European Standardisation Organisations (ESOs) to support European Smart Grid deployment
• Ref Project: EN IEC 61970-456:2018 - Energy management system application program interface (EMS-API) - Part 456: Solved power system state profiles

Relations

• Replaces: SIST EN 61970-456:2013 - Energy management system application program interface (EMS-API) - Part 456: Solved power system state profiles
• Effective Date: 07-Jun-2022
• Replaces: SIST EN 61970-456:2013 - Energy management system application program interface (EMS-API) - Part 456: Solved power system state profiles
• Effective Date: 01-Oct-2018
• Replaces: SIST EN 61970-456:2013/A1:2016 - Energy management system application program interface (EMS-API) - Part 456: Solved power system state profiles
• Effective Date: 01-Oct-2018
• Replaced By: SIST EN IEC 61970-456:2022 - Energy management system application program interface (EMS-API) - Part 456: Solved power system state profiles
• Effective Date: 01-May-2022

Standards Content (Sample)

SLOVENSKI STANDARD
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SIST EN 61970-456:2013
SIST EN 61970-456:2013/A1:2016
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Energy management system application program interface (EMS-API) - Part 456: Solved
power system state profiles
Schnittstelle für Anwendungsprogramme für Netzführungssysteme (EMS-API) - Teil 456:
Globale Stabilitätsbeurteilung
Interface de programmation d'application pour système de gestion d'énergie (EMS-API) -
Partie 456: Profils d'état de réseaux électriques résolus
Ta slovenski standard je istoveten z: EN IEC 61970-456:2018
ICS:
29.240.30 Krmilna oprema za Control equipment for electric
elektroenergetske sisteme power systems
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61970-456

NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2018
ICS 33.200 Supersedes EN 61970-456:2013
English Version
Energy management system application program interface
(EMS-API) - Part 456: Solved power system state profiles
(IEC 61970-456:2018)
Interface de programmation d'application pour système de Schnittstelle für Anwendungsprogramme für
gestion d'énergie (EMS-API) - Partie 456: Profils d'état de Netzführungssysteme (EMS-API) - Teil 456: Globale
réseaux électriques résolus Stabilitätsbeurteilung
(IEC 61970-456:2018) (IEC 61970-456:2018)
This European Standard was approved by CENELEC on 2018-04-23. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey 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
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61970-456:2018 E

European foreword
The text of document 57/1951/FDIS, future edition 2 of IEC 61970-456, prepared by IEC/TC 57
"Power systems management and associated information exchange" was submitted to the
IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 61970-456:2018.

The following dates are fixed:
• latest date by which the document has to be (dop) 2019-01-23
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2021-04-23
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 61970-456:2013.

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 mandate given to CENELEC by the European Commission
and the European Free Trade Association.

Endorsement notice
The text of the International Standard IEC 61970-456:2018 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 standards indicated:

IEC 61970-1 NOTE Harmonized as EN 61970-1.
IEC/TS 61790-2 NOTE Harmonized as CLC/TS 61790-2.
IEC 61790-301 NOTE Harmonized as EN 61790-301.
IEC 61790-501 NOTE Harmonized as EN 61790-501.
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.cenelec.eu.
Publication Year Title EN/HD Year
IEC 61970-452 2017 Energy management system application EN 61970-452 2017
program interface (EMS-API) - Part 452:
CIM static transmission network model
profiles
IEC 61970-453 2014 Energy Management System Application EN 61970-453 2014
Program Interface (EMS-API) -- Part 453:
Diagram Layout Profile
IEC 61970-552 2016 Energy management system application EN 61970-552 2016
program interface (EMS-API) - Part 552:
CIMXML Model exchange format
IEC 61970-456 ®
Edition 2.0 2018-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Energy management system application program interface (EMS-API) –

Part 456: Solved power system state profiles

Interface de programmation d'application pour système de gestion d'énergie

(EMS-API) –
Partie 456: Profils d'état de réseaux électriques résolus

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.200 ISBN 978-2-8322-5440-0

– 2 – IEC 61970-456:2018 © IEC 2018
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Profile information . 8
5 Overview . 8
6 Use cases . 13
6.1 Overview. 13
6.2 EMS network analysis integration . 15
6.3 Power flow based network analysis . 16
7 Data model with CIMXML examples . 21
7.1 Use of the interfaces . 21
7.1.1 Overview . 21
7.1.2 Network model boundaries . 21
7.1.3 Bus-branch and node-breaker models . 24
7.2 Topology (TP) interface . 27
7.3 State Variables (SV) interface . 29
7.4 Steady State Hypothesis (SSH) interface . 31
8 Profiles . 31
8.1 Comments and notes . 31
8.2 SteadyStateHypothesis profile . 32
8.2.1 General . 32
8.2.2 Concrete Classes . 33
8.2.3 Abstract Classes. 46
8.2.4 Data Types . 53
8.3 Topology profile . 55
8.3.1 General . 55
8.3.2 Concrete Classes . 55
8.3.3 Abstract Classes. 57
8.4 StateVariables profile . 58
8.4.1 General . 58
8.4.2 Concrete Classes . 58
8.4.3 Abstract Classes. 64
8.4.4 Data Types . 65
Bibliography . 67

Figure 1 – Relations between MAS, profile and dataset . 9
Figure 2 – Profile relationships . 11
Figure 3 – Connectivity model example . 12
Figure 4 – The European power system with regions . 14
Figure 5 – Information exchange in power flow and sharing of results . 15
Figure 6 – EMS datasets to an external client . 16
Figure 7 – Node-breaker power flow Integration architecture . 17

IEC 61970-456:2018 © IEC 2018 – 3 –
Figure 8 – Bus-branch power flow Integration architecture . 17
Figure 9 – Boundary injection model . 18
Figure 10 – Alternate boundary modelling . 19
Figure 11 – Assembled model alternatives . 20
Figure 12 – Line boundary dataset example . 22
Figure 13 – Substation boundary dataset example . 22
Figure 14 – Power Flow on an assembledd model . 23
Figure 15 – Power Flow on a regional network part . 24
Figure 16 – CIM relation between ConnectivityNode and TopologicalNode . 25
Figure 17 – Bus-branch modeling of bus coupler and line transfer . 26
Figure 18 – CIM topology model . 27
Figure 19 – Topology solution interface . 28
Figure 20 – CIM state variable solution model . 29
Figure 21 – State solution interface example . 30

Table 1 – Profiles defined in this document . 8

– 4 – IEC 61970-456:2018 © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
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ENERGY MANAGEMENT SYSTEM APPLICATION
PROGRAM INTERFACE (EMS-API) –
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