SIST EN IEC 63376:2024
(Main)Industrial facility energy management system (FEMS) - Functions and information flows (IEC 63376:2023)
Industrial facility energy management system (FEMS) - Functions and information flows (IEC 63376:2023)
This document specifies the functions and the information flows of industrial Facility Energy Management System (FEMS). Generic functions are defined for the FEMS, to enable upgrading traditional Energy Management System (EMS) from visualization of the status of energy consumption to automation of energy management defining a closer relation with other management and control systems. A generic method to classify the FEMS functions will be explained. The information exchange between the FEMS and other systems such as Manufacturing Operations Management (MOM), Manufacturing Execution System (MES) and Enterprise Resource Planning (ERP) will be outlined.
Energiemanagementsystem für Industrieanlagen (FEMS) - Funktionen und Informationsflüsse (IEC 63376:2023)
Système de gestion d'énergie des installations industrielles (FEMS) - Fonctions et flux d'informations (IEC 63376:2023)
L'IEC 63376:2023 spécifie les fonctions et les flux d’informations d’un système de gestion d’énergie d’une installation industrielle (FEMS). Des fonctions génériques sont définies pour le FEMS, afin de permettre la mise à niveau du traditionnel système de gestion d’énergie (SME) depuis la visualisation de l’état de la consommation d’énergie jusqu’à l’automatisation de la gestion d’énergie, en définissant une relation plus étroite avec d’autres systèmes de gestion et de commande. Une méthode générique sera expliquée pour classer les fonctions du FEMS. L’échange d’informations entre le FEMS et d’autres systèmes tels que la gestion des opérations de fabrication (MOM), les systèmes d’exécution de fabrication (MES) et la planification des ressources de l’entreprise (ERP), sera décrit.
Sistem za energijsko upravljanje industrijskih objektov (FEMS) - Funkcije in informacijski tokovi (IEC 63376:2023)
Ta mednarodni standard določa funkcije in informacijske tokove sistema za energijsko upravljanje industrijskih objektov (FEMS). Sistem za energijsko upravljanje industrijskih objektov ima določene funkcije za nadgradnjo običajnih sistemov za upravljanje z energijo od vizualizacije stanja porabe energije do avtomatizacije upravljanja z energijo, ki opredeljuje tesnejšo povezavo z drugimi sistemi za upravljanje in nadzor. Pojasnjena bo splošna metoda za razvrstitev funkcij sistema za energijsko upravljanje industrijskih objektov. Predstavljena bo izmenjava informacij med sistemom za energijsko upravljanje industrijskih objektov in drugimi sistemi, kot so upravljanje proizvodnih operacij, sistemi za vodenje proizvodnje in načrtovanje virov podjetja.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2024
Sistem za energijsko upravljanje industrijskih objektov (FEMS) - Funkcije in
informacijski tokovi (IEC 63376:2023)
Industrial facility energy management system (FEMS) - Functions and information flows
(IEC 63376:2023)
Energiemanagementsystem für Industrieanlagen (FEMS) - Funktionen und
Informationsflüsse (IEC 63376:2023)
Système de gestion d'énergie des installations industrielles (FEMS) - Fonctions et flux
d'informations (IEC 63376:2023)
Ta slovenski standard je istoveten z: EN IEC 63376:2023
ICS:
25.040.01 Sistemi za avtomatizacijo v Industrial automation
industriji na splošno systems in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN IEC 63376
NORME EUROPÉENNE
EUROPÄISCHE NORM
EUROPEAN STANDARD
Septembre 2023
ICS 03.100.70
Version française
Système de gestion d'énergie des installations industrielles
(FEMS) - Fonctions et flux d'informations
(IEC 63376:2023)
Energiemanagementsystem für Industrieanlagen (FEMS) - Industrial facility energy management system (FEMS) -
Funktionen und Informationsflüsse Functions and information flows
(IEC 63376:2023) (IEC 63376:2023)
La présente Norme Européenne a été adoptée par le CENELEC le 2023-09-20. Les membres du CENELEC sont tenus de se soumettre au
Règlement Intérieur du CEN/CENELEC, qui définit les conditions dans lesquelles doit être attribué, sans modification, le statut de norme
nationale à cette Norme Européenne.
Les listes mises à jour et les références bibliographiques relatives à ces normes nationales peuvent être obtenues auprès du CEN-
CENELEC Management Centre ou auprès des membres du CENELEC.
La présente Norme Européenne existe en trois versions officielles (allemand, anglais, français). Une version dans une autre langue faite par
traduction sous la responsabilité d'un membre du CENELEC dans sa langue nationale, et notifiée au CEN-CENELEC Management Centre,
a le même statut que les versions officielles.
Les membres du CENELEC sont les comités électrotechniques nationaux des pays suivants: Allemagne, Autriche, Belgique, Bulgarie,
Chypre, Croatie, Danemark, Espagne, Estonie, Finlande, France, Grèce, Hongrie, Irlande, Islande, Italie, Lettonie, Lituanie, Luxembourg,
Malte, Norvège, Pays-Bas, Pologne, Portugal, République de Macédoine du Nord, République de Serbie, République Tchèque, Roumanie,
Royaume-Uni, Slovaquie, Slovénie, Suède, Suisse et Turquie.
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
European Committee for Electrotechnical Standardization
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Bruxelles
© 2023 CENELEC Tous droits d'exploitation sous quelque forme et de quelque manière que ce soit réservés dans le monde entier aux
membres du CENELEC.
Réf. n° EN IEC 63376:2023 F
Avant-propos européen
Le texte du document 65/995/FDIS, future édition 1 de IEC 63376, préparé par le CE 65 de l'IEC,
"Mesure, commande et automation dans les processus industriels", a été soumis au vote parallèle
IEC-CENELEC et approuvé par le CENELEC en tant que EN IEC 63376:2023.
Les dates suivantes sont fixées:
• date limite à laquelle ce document doit être mis en application au (dop) 2024-06-20
niveau national par publication d’une norme nationale identique ou par
entérinement
• date limite à laquelle les normes nationales conflictuelles doivent être (dow) 2026-09-20
annulées
L’attention est appelée sur le fait que certains des éléments du présent document peuvent faire l’objet
de droits de propriété intellectuelle ou de droits analogues. Le CENELEC ne saurait être tenu pour
responsable de ne pas avoir identifié de tels droits de propriété et averti de leur existence.
Il convient que l’utilisateur adresse tout retour d’information et toute question concernant le présent
document à l’organisme national de normalisation de son pays. Une liste exhaustive desdits
organismes se trouve sur le site web du CENELEC.
Notice d’entérinement
Le texte de la Norme internationale IEC 63376:2023 a été approuvé par le CENELEC comme Norme
Européenne sans aucune modification.
Dans la version officielle, ajouter dans la Bibliographie la note suivante pour la norme indiquée:
IEC 62872-2:2022 NOTE Approuvée comme EN IEC 62872-2:2022 (non modifiée)
Annexe ZA
(normative)
Références normatives à d'autres publications internationales
avec les publications européennes correspondantes
Les documents suivants cités dans le texte constituent, pour tout ou partie de leur contenu, des
exigences du présent document. Pour les références datées, seule l'édition citée s'applique. Pour les
références non datées, la dernière édition du document de référence s'applique (y compris les
éventuels amendements).
NOTE 1 Dans le cas où une publication internationale est modifiée par des modifications communes, indiqué
par (mod), l'EN/le HD correspondant(e) s'applique.
NOTE 2 Les informations les plus récentes concernant les dernières versions des Normes Européennes
listées dans la présente annexe sont disponibles à l'adresse suivante: www.cenelec.eu.
Publication Année Titre EN/HD Année
IEC 62264 série Intégration des systèmes entreprise- EN 62264 série
contrôle
IEC/TS 62872-1 2019 Industrial-process measurement, control - -
and automation - Part 1: System interface
between industrial facilities and the smart
grid
IEC/TR 62837 - Energy efficiency through automation - -
systems
ISO 22400-1 2014 Systèmes d'automatisation et intégration - - -
Indicateurs de la performance clé pour le
management des opérations de fabrication
- Partie 1: Aperçu, concepts et terminologie
ISO 22400-2/AMD1 2014/20 Systèmes d'automatisation et intégration - - -
17 Indicateurs de la performance clé pour le
management des opérations de fabrication
- Partie 2: Définitions et descriptions -
Amendement 1 : Indicateurs de la
performance clé pour le management de
l’énergie
IEC 63376 ®
Edition 1.0 2023-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial facility energy management system (FEMS) – Functions and
information flows
Système de gestion d'énergie des installations industrielles (FEMS) – Fonctions
et flux d’informations
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 03.100.70 ISBN 978-2-8322-7112-4
– 2 – IEC 63376:2023 IEC 2023
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 10
2 Normative references . 10
3 Terms, definitions, and abbreviated terms . 10
3.1 Terms and definitions . 11
3.2 Abbreviated terms . 12
4 General . 13
4.1 Energy management activities in Industrial Facilities. 13
4.2 Hierarchical structure of enterprise manufacturing system . 14
4.2.1 Levels of manufacturing enterprises and the activities . 14
4.3 Energy management system in a manufacturing enterprise . 15
4.4 Role of FEMS and its expansion . 16
4.4.1 Role of FEMS . 16
4.4.2 Expansion of the role of FEMS . 16
4.4.3 International standardization . 17
4.5 Relation between FEMS and other systems . 18
4.5.1 Relation between FEMS and other systems . 18
4.5.2 FEMS and production system . 18
4.5.3 Management and optimization . 21
4.6 Information exchange. 21
4.6.1 System boundary . 21
4.6.2 Inside and outside of the facility . 22
4.7 Data confidentiality . 23
4.7.1 General . 23
4.7.2 Information security . 24
5 Description of functions of FEMS . 24
5.1 Category of functions of FEMS. 24
5.2 Monitoring Data Flows . 27
5.2.1 General . 27
5.2.2 Collection of actual and reference data . 28
5.2.3 Collection of manufacturing planning information and facility status . 29
5.3 Analysis Data Flows . 30
5.3.1 General . 30
5.3.2 Assumption for unmeasured parameters . 31
5.3.3 Change detection in energy performance . 32
5.3.4 Estimation of causality . 32
5.3.5 Analysis of potential energy saving . 33
5.4 Optimization Data Flows . 34
5.4.1 General . 34
5.4.2 Validation of operation strategy and constraints . 35
5.4.3 Derivation of operation strategy . 36
5.5 Instruction Data Flows . 36
5.5.1 General . 36
5.5.2 Report optimisation results to operator/energy manager . 37
5.5.3 Output operation strategies to other systems . 38
IEC 63376:2023 IEC 2023 – 3 –
6 Classification of FEMS . 38
7 FEMS Demand Response . 43
7.1 Demand Response . 43
7.2 FEMS and Incentive-based Demand Response . 44
7.3 FEMS and Price-based Demand Response . 44
Annex A (informative) FEMS Use Cases . 47
A.1 FEMS Actors . 47
A.2 Use cases of FEMS . 49
A.2.1 General . 49
A.2.2 Selection of Use cases . 49
A.2.3 Measurement and analysis of energy data (Visualization) . 50
A.2.4 Optimization of each unit . 51
A.2.5 Optimization of each facility . 53
A.2.6 Optimization of energy supply facility . 55
A.2.7 Overall optimization . 58
A.2.8 Energy Source optimization – Economics/renewables . 60
A.2.9 Energy Profile . 63
Annex B (informative) Interface to exchange information for FEMS . 66
B.1 Energy Storage System (ESS) . 66
B.2 Peak shift . 67
B.3 Peak shaving . 68
B.4 Other Functions . 69
B.4.1 General . 69
B.4.2 Battery operating time forecast . 69
B.4.3 Battery life monitoring . 69
B.4.4 Function update . 69
Bibliography . 70
Figure 1 – Characteristic feature of HEMS, BEMS, and FEMS . 13
Figure 2 – Functional hierarchy . 14
Figure 3 – Extension to the role-based equipment hierarchy model . 15
Figure 4 – System configuration of integration of multiple FEMS . 16
Figure 5 – Expansion of role of FEMS . 17
Figure 6 – Relationship between FEMS and other systems . 18
Figure 7 – Hierarchical model of production system . 20
Figure 8 – Multiple-input, Multiple-output controller . 20
Figure 9 – Hierarchical structure of integrated enterprise-production system . 22
Figure 10 – Example of Information exchange with inside and outside of the facility . 23
Figure 11 – IEC 62443 Security for industrial automation and control systems
standards . 24
Figure 12 – Categories of FEMS functions and improvement cycle of energy
performance . 25
Figure 13 – Relationship among functions of FEMS and other systems . 27
Figure 14 – Functions categorized under “Monitoring” and FEMS related data flow . 28
Figure 15 – Functions categorized under “Analysis” and FEMS related data flow . 31
Figure 16 – Functions categorized under “Optimization” and FEMS related data flow . 35
– 4 – IEC 63376:2023 IEC 2023
Figure 17 – Functions categorized under “Instruction” and FEMS related data flow . 37
Figure 18 – Three-dimensional map of FEMS . 40
Figure 19 – General approach common today for grid management of demand
response . 44
Figure 20 – Correspondence relationship among these seven FCs and FEMS functions . 45
Figure A.1 – Generic communication diagram between the smart grid and the FEMS . 47
Figure A.2 – Use Case representation on three-dimensional FEMS model . 49
Figure A.3 – Relationship between IEC 62264 (ISA 95) model and FEMS use-cases . 50
Figure A.4 – Measurement and analysis of energy data . 50
Figure A.5 – Sequence diagram of measurement and analysis of energy data . 51
Figure A.6 – Optimization of each unit (invertor control of compressor) . 52
Figure A.7 – Sequence diagram of Optimization of each unit (invertor control of
compressor) . 53
Figure A.8 – Optimization of each facility (quantity control of compressor) . 54
Figure A.9 – Sequence diagram of optimization of each facility (quantity control of
compressor) . 55
Figure A.10 – Optimization of energy supply facility (supply-side RENKEI) . 56
Figure A.11 – Sequence diagram of optimization of energy supply facility (supply-side
RENKEI) . 57
Figure A.12 – Overall optimization (demand and supply RENKEI) . 58
Figure A.13 – Sequence diagram of overall optimization (demand and supply RENKEI) . 59
Figure A.14 – Alternative energy sources . 61
Figure A.15 – Sequence diagram for energy source optimization . 62
Figure A.16 – Alternative energy profiles . 64
Figure A.17 – Sequence diagram for energy profile optimization . 65
Figure B.1 – Signal exchange diagram of the ESS and FEMS . 67
Figure B.2 – Energy flow during peak shift . 68
Figure B.3 – Peak shaving energy flow . 68
Table 1 – Description for FEMS function categories . 25
Table 2 – Data input and output of FEMS functions categorized into “Monitoring” . 27
Table 3 – Data input and output of FEMS functions categorized into “Analysis” . 30
Table 4 – Data input and output of FEMS functions categorized into “Optimization” . 34
Table 5 – Data input and output of FEMS functions categorized into “Instruction” . 36
Table 6 – Description of “Automation levels” . 39
Table 7 – Relation between the level of automation and function . 41
Table 8 – Relationship between the FCs in IEC 62872-2 [2] and the functions of FEMS . 46
Table A.1 – Actors and roles . 47
Table A.2 – Functions included in a Process (Measurement and analysis of energy
data) . 51
Table A.3 – Functions included in a Process (optimization of each unit (invertor
control of compressor) . 53
Table A.4 – Functions included in a process (optimization of each facility (quantity
control of compressor) . 55
Table A.5 – Functions included in a process (optimization of energy supply facility
(Supply-side RENKEI)) Function . 57
IEC 63376:2023 IEC 2023 – 5 –
Table A.6 – Functions included in a process (overall optimization (demand and supply
RENKEI)) . 60
Table A.7 – Functions included in an energy optimization process . 62
Table A.8 – Functions included in an Energy Profiles Optimization Process . 65
– 6 – IEC 63376:2023 IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL FACILITY ENERGY MANAGEMENT SYSTEM (FEMS) –
FUNCTIONS AND INFORMATION FLOWS
FOREWORD
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International Standard IEC 63376 has been prepared by IEC technical committee TC 65:
Industrial-process measurement, control and automation.
The text of this International Standard is based on the following documents:
Draft Report on voting
65/995/FDIS 65/1014/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
The language used for the development of this International Standard is English.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2, and
developed in accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC
Supplement, available at www.iec.ch/members_experts/refdocs. The main document types
developed by IEC are described in greater detail at www.iec.ch/publications.
IEC 63376:2023 IEC 2023 – 7 –
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 8 – IEC 63376:2023 IEC 2023
INTRODUCTION
The world's energy use has been increasing along with economic growth. Energy use by
Organization for Economic Co-operation and Development (OECD) countries is no longer
increasing. According to World Energy Outlook 2020 [3], energy demand in OECD countries
has been on a declining trend since 2007 with continued increase of their gross domestic
product. On the other hand, energy use in developing countries has been increasing in both
growth rate and value. Energy use by the industry sector is more than 50 % of the total
consumption and it is forecast to increase by about 10% between 2018 and 2030. Although
the rate of increasing energy demand is lower than the rate in the report published in 2012,
this increase causes serious concerns for environmental impact and presents opportunities for
energy management. To control global warming, the energy from renewable resources will be
increasing globally. It is expected that the share of renewable energy to total demand will
increase from about 30 % in 2019 to about 40 % in 2030. Outputs of renewable energy
resources such as solar photovoltaics and wind etc. require power regulation to manage
integration with the overall grid. Industrial facilities are major energy consumers and, also
major energy generators. Therefore, the industrial sector is expected to play a significant role
to satisfy the power regulations for the smart grid using renewable energy for decarbonization.
Consequently, it is quite urgent for the industrial sector to deploy energy management
systems to improve the energy efficiency to support the decarbonization of society.
Energy management in the manufacturing industries is linked to production and depending on
the industry it can have a very wide range of requirements. To date, energy management
systems have been custom developed for/by each company and then enhanced based on
practical experiences thus further customizing them. Therefore, there are many different EMS
for each organization. As coordination between related organizations becomes necessary for
the optimal operation of each facility, the functions of an industrial Facility Energy
Management System (FEMS) are required to be standardized to realize the benefits of making
better use of the available energy within and across enterprises and organizations.
Production systems have a hierarchical layered structure such as Enterprise Resource
Planning (ERP), Manufacturing Operations Management (MOM) / Manufacturing Execution
Systems (MES) and Control. FEMS may have been installed parallel to each layer of the
production system to communicate with them. As the production system is integrated for
overall optimization, expanding the boundary of FEMS for the horizontal and/or vertical
integration of FEMS is also required to have an input to that integrated production system
structure.
For overall optimization, the production system executes under the multiple constraints such
as safety, cost, quality of products, production schedule, market requirement, energy, and
others particular to the industry and application. These multiple constraints are prioritized
according to the business situation and used as the objective functions for optimization. Due
to the complexity and continuous variability of practical operation conditions, the objective
functions for optimization, in most cases, are set to the production system manually by an
experienced engineer or operator who has deep knowledge of the operation. FEMS have
been supporting those people by providing necessary information for their decision-making
processes during the operation.
As a FEMS needs to collect energy related information from many kinds of production
systems, MOM/MES and ERP, the volume of information has been increasing extensively. It is
necessary to clarify the necessary information and functions for energy management. It is
also necessary to automate the execution processes of functions of FEMS including the
decision-making processes for optimization as possible.
Automation technologies including modelling, simulation, Artificial Intelligence (AI), and others
enable automating the process for optimization thus reducing manual operation / intervention.
FEMS provide necessary functions and information for the above-mentioned optimization.
IEC 63376:2023 IEC 2023 – 9 –
FEMS functions need to be defined as an international standard to improve interconnectivity
between the FEMS and other related systems. This document proposes to define the
functions, information flows and classification of FEMS based on the level of achievement of
FEMS capabilities. The level of automation of FEMS functions will be one factor to define the
classification. The level will provide management with a motivation and path for a stepwise
progression through the classification. The resulting FEMS standard increases the
sophistication of control in industrial complexes and processes so that improved optimization
of facility operations can be obtained. Furthermore, the information exchange among FEMS
and other systems such as MOM/MES and ERP will be defined for the integration.
International standardization will benefit both end users and suppliers of FEMS.
– 10 – IEC 63376:2023 IEC 2023
INDUSTRIAL FACILITY ENERGY MANAGEMENT SYSTEM (FEMS) –
FUNCTIONS AND INFORMATION FLOWS
1 Scope
This International Standard specifies the functions and the information flows of industrial
Facility Energy Management System (FEMS). Generic functions are defined for the FEMS, to
enable upgrading traditional Energy Management System (EMS) from visualization of the
status of energy consumption to automation of energy management defining a closer relation
with other management and control systems. A generic method to classify the FEMS functions
will be explained. The information exchange between the FEMS and other systems such as
Manufacturing Operations Management (MOM), Manufacturing Execution System (MES) and
Enterprise Resource Planning (ERP) will be outlined.
2 Normative references
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.
IEC 62264 (all parts), Enterprise-control system integration
IEC/TS 62872-1:2019, Industrial-process measurement, control and automation – Part 1:
System interface between industrial facilities and the smart grid
IEC/TR 62837:2013, Energy efficiency through automation systems
ISO 22400-1:2014, Automation systems and integration – Key performance indicators (KPIs)
for manufacturing operations management – Part 1: Overview, concepts and terminology
ISO 22400-2:2014/AMD1:2017, Automation systems and integration – Key performance
indicators (KPIs) for manufacturing operations management – Part 2: Definitions and
descriptions – Amendment 1: Key performance indicators for energy management
3 Terms, definitions, and abbreviated terms
For the purposes of this document, the following terms, definitions, and abbreviated terms
apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
IEC 63376:2023 IEC 2023 – 11 –
3.1 Terms and definitions
3.1.1
device
independent physical entity capable of performing one or more specified functions in a
particular context and delimited by its interfaces
Note 1 to entry: A device can form part of a larger device.
[SOURCE: IEC 61804-2:2017, 3.1.18, modified – addition of note from IEC 80004-9:2017,
3.1.1]
3.1.2
equipment
component or arrangement of components, built for specific function(s)
[SOURCE: ISO 19901-5:2016 (en), 3.17, modified – deletion of: Notes 1 & 2]
3.1.3
enterprise
one or more organizations sharing a definite mission, goals and objectives which provides an
output such as product or service
[SOURCE: IEC 62264-1:2013, 3.1.10]
3.1.4
facility
site, or area within a site, that includes the resources within the site or area and includes the
activities associated with the use of the resources
[SOURCE: IEC 62264-1:2013, 3.1.20]
3.1.5
operator
entity responsible for the minute-by-minute execution and safe functioning of a facility
3.1.6
organization
company, corporation, firm, authority or institution, or part or combination thereof, whether
incorporated or not, public, or private, that has its own functions and administration
Note 1 to entry: For organizations with more than one operating unit, a single operating unit may be defined as
an organization.
[SOURCE:ISO 14001:2004, 3.16, modified – reference to enterprise removed.]
3.1.7
plant
physical unit for a comprehensive process including the dedicated functional unit(s) for control
EXAMPLE: Heating plant, ventilating plant, air conditioning plant, chiller plant, sanitary installation, or electrical
installation.
Note 1 to entry: A plant can consist of several partial plants that are assembled from equipment, units, or
aggregates (e.g., boiler), devices, modules, components, and elements.
[SOURCE: ISO 16484-2:2004, 3.149, modified – Note 2 deleted, addition of (s) to "unit"]
– 12 – IEC 63376:2023 IEC 2023
3.1.8
site
identified physical, geographical, and/or logical component grouping of a manufacturing
enterprise under a single management
[SOURCE: IEC 62264-1:2013, 3.1.39, modified – addition of “under a single management”
after “enterprise”]
3.1.9
unit
lowest level of equipment typically scheduled by the Level 4 or Level 3 functions for
continuous manufacturing processes
3.2 Abbreviated terms
APO Advanced Planning and Optimization
BEMS Building Energy Management System
CMM Capability Maturity Model
DER Distributed Energy Resource
EMS Energy Management System
ERP Enterprise Resource Planning
FC Functional Component
FDREM Facility Demand Response Energy Management
FEMS Facility Energy Management System
HEMS Home Energy Management System
IP Intellectual Property
KPI Key Performance Indicator
LIMS Laboratory Information Management System
MES Manufacturing Execution System
MIMO Multiple Input Multiple Output
MOM Manufacturing Operations Management
MPC Model Predictive Control
OECD Organisation for Economic Co-operation and Development
MV Manipulated Variable
PV Process Variable
PCS Process Control System
PID Proportional Integral Derivative
SISO Single Input Single Output
SV Setpoint Value
WMS Warehouse Management System
IEC 63376:2023 IEC 2023 – 13 –
4 General
4.1 Energy management activities in Industrial Facilities
In the customer domains of energy such as Home, Building/Commercial and Industry, energy
management systems: Home Energy Management System (HEMS), Building Energy
Management System (BEMS) and FEMS respectively have been deployed depending on the
characteristics of energy consumption. Figure 1 depicts the characteristic features of FEMS,
BEMS, and HEMS. Key factors are the energy usage and number of entities in each domain.
Arrows show energy distribution. Up-down-double arrows show energy trading between Home,
building and Industry through the energy distribution.
Figure 1 – Characteristic feature of HEMS, BEMS, and FEMS
The energy consumption of users of FEMS is generally larger than that of BEMS and HEMS,
the effect of a single industrial entity’s energy efficiency improvement is significant. The
profile of energy demand varies among entities as a function of the different types of energy
sources in a manufacturing facility. Typical energy sources are electricity, fuel, steam, hydro,
and distributed energy resources (DER) such as renewable energy, combined heating and
power stations, and storage systems to provide useful energy in the form of power, heat,
steam, heating or cooling water, compressed air and similar. FEMS is usually provided as a
made-to-order product. BEMS has a larger number of target entities and is readily available
as a ready-made product. HEMS, which deals with a larger number of smaller entities, is a
readily available mass product. Each system and associated complexity / degree of
customization has a corresponding price.
Energy management in a manufacturing enterprise is performed with consideration for
harmonizing many conflicting requirements such as productivity, quality, delivery, production
scheduling, manufacturing cost, profit, safety, environmental and related requirements. Those
requirements are prioritized depending on the corporate objectives and regulations at the time
the energy management decisions are made.
– 14 – IEC 63376:2023 IEC 2023
In industrial facilities, the energy supply facility supplies and manages energy by managing
electricity, heat, steam, hot or cooling water and compressed air to demand facilities such as
production lines. The energy supply facility may be designed independently to have the
capacity to meet the maximum energy demands. When the energy demand decreases, the
mismatch between energy supply and demand can cause significant energy loss and
decrease of energy efficiency. It is necessary to provide an optimum load balance between
equipment of an energy supply facility given the energy demand. Facility energy supply can
be controlled and operated based on the energy demand forecast incorporating factors such
as production schedule and ambient conditions such as changes in weather.
A FEMS collects data from each level of the production system for the optimization of energy
performance compared to the energy demands of the full production system. Collected data
are analysed for an optimum operation of the facility to improve energy performance. There
are many kinds of decision-making processes such as changing set points of equipment,
changing the operating conditions of devices, selecting a manufacturing process depending
on the operating situation, and others. Operating decisions are made automatically by the
system or manually by operators. Guidance systems are used to support manual operation. It
is expected that energy performance of an industrial facility will be improved further by making
FEMS processes highly automated.
4.2 Hierarchical structure of enterprise manufacturing system
4.2.1 Levels of manufacturing enterprises and the activities
Figure 2 – Functional hierarchy
As shown in Figure 2, IEC/ISO 62264-1 (ISA-95) defines the levels for the structure of
manufacturing enterprise.
FEMS is positioned on the level 3 as a part of MOM/MES. Manufacturing operations
management (MOM) is a term used in IEC 62264 to specify a portion of the functional
hierarchy model of a manufacturing enterprise.
IEC 63376:2023 IEC 2023 – 15 –
FEMS exchanges information between MES, Laboratory Information Management System
(LIMS), Warehouse Management System (WMS), Capability Maturity Model (CMM) systems.
these level 3 systems exchange information with ERP, Advanced Planning and Optimization
(APO), logistic management system in level 4 and across facilities, controllers, and sensors
in level 2, 1 and 0. FEMS receives th
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