IEC 63376:2023

Industrial facility energy management system (FEMS) - Functions and information flows

IEC 63376:2023 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.

Système de gestion d'énergie des installations industrielles (FEMS) - Fonctions et flux d’informations

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.

General Information

• Status: Published
• Publication Date: 15-Aug-2023
• ICS: 03.100.70 - Management systems
• Technical Committee: TC 65 - Industrial-process measurement, control and automation
• Drafting Committee: JWG 14 - TC 65/JWG 14
• Current Stage: PPUB - Publication issued
• Start Date: 07-Jul-2023
• Completion Date: 16-Aug-2023

Standards Content (Sample)

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

IEC 63376:2023-08(en-fr)

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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




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– 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

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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

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– 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

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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

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– 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.
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IEC 63376:2023  IEC 2023 – 7 –
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– 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. A
...