IEC TS 62654:2012

Network-based energy consumption measurement - Energy saving system - Conceptual model

IEC/TS 62654:2012(E) defines the architecture and functional requirements of an energy saving system (ESS) that measures energy consumption of each home appliance, including AV multimedia equipment and systems, and shows how to reduce its standby power. With respect to energy consumption measurements, this specification extends only to AC power environments in premises.

General Information

• Status: Published
• Publication Date: 08-Aug-2012
• ICS: 29.240.30 - Control equipment for electric power systems
• ICS: 33.040.40 - Data communication networks
• ICS: 35.110 - Networking
• Technical Committee: TA 19 - Environmental and energy aspects for multimedia systems and equipment
• Current Stage: PPUB - Publication issued
• Start Date: 30-Sep-2012
• Completion Date: 09-Aug-2012

Overview

IEC TS 62654:2012 - Network-based energy consumption measurement: Energy saving system (ESS) - Conceptual model defines a conceptual architecture and functional requirements for a networked energy saving system that measures and reports the energy consumption of individual home appliances (including AV multimedia equipment). The Technical Specification (TS) focuses on AC power environments in premises and describes how an ESS can help reduce standby power and improve household energy efficiency. As a TS, IEC/TS 62654:2012 documents emerging best practices and may be revised or elevated to an International Standard.

Key topics and technical requirements

• Architecture: Defines the ESS network composed of one or more ESS clients and an ESS server, their roles and interactions for measurement and control.
• ESS client: Placed between an AC power source and a home electronic device (HED); measures consumption, supports power control (supply/block), and communicates measurement data to the server.
• ESS server: Aggregates and monitors client data, provides user interfaces (basic and advanced), supports network interfaces (internal home network and external utility interfaces), and handles data storage and analysis.
• Operating modes: Specifies on, off, standby (active/passive) modes and related measurement/behavioral requirements for accurate reporting.
• Functional requirements: Detailed server/client functions such as:
  • Support of the EPCM protocol for communication
  • Gathering and monitoring of energy consumption
  • Automatic cut-off of passive standby power and re-supply controls
  • Sleep-mode and protection circuit support
  • Energy usage modeling and user settings
  • Demand/supply management for renewable energy
  • Estimation of monthly electricity rates
• Classification and measurement: Classifies ESS server/client types and specifies measurement considerations for home electronic devices (see annex for measurement conditions).

Applications and who uses it

IEC TS 62654:2012 is practical for:

• Consumer electronics and AV manufacturers integrating energy monitoring and standby reduction features
• Smart home and HEMS (Home Energy Management System) vendors designing client/server devices
• Utilities and smart-grid integrators exploring home demand-response and distributed renewable integration
• System integrators and installers deploying networked energy measurement in residences
• Standards developers and researchers working on energy-efficiency protocols and measurement methods

Typical use cases include per-appliance energy monitoring, automated standby cut-off, user-facing energy dashboards, and integration with home renewable generation and utility demand-response programs.

Related standards

• Works alongside general IEC electrotechnical publications and smart-grid/home energy management standards (see IEC publications search for related documents). Note: this is a Technical Specification and may be reviewed for future standardization.

Standards Content (Sample)

IEC/TS 62654 ®
Edition 1.0 2012-08
TECHNICAL
SPECIFICATION
Network-based energy consumption measurement – Energy saving system –
Conceptual model
IEC/TS 62654:2012(E)
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IEC/TS 62654 ®
Edition 1.0 2012-08
TECHNICAL
SPECIFICATION
Network-based energy consumption measurement – Energy saving system –

Conceptual model
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
T
ICS 29.240.30; 33.040.40; 35.110 ISBN 978-2-83220-306-4

– 2 – TS 62654 © IEC:2012(E)
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Terms, definitions and abbreviations . 7
2.1 Terms and definitions . 7
2.2 Abbreviations . 8
3 Specification of operating modes . 8
4 Architecture and basic functions of ESS . 9
4.1 ESS network . 9
4.2 ESS server . 9
4.3 ESS client . 10
5 Functional requirements of ESS . 12
5.1 Functional requirements of ESS server . 12
5.1.1 General . 12
5.1.2 Network interface with ESS client . 12
5.1.3 Support of EPCM protocol . 12
5.1.4 Gathering and monitoring of energy consumption information . 13
5.1.5 Provision of basic user interface . 13
5.1.6 Types of ESS servers . 13
5.1.7 Support of sleep mode . 13
5.1.8 Automatic cut-off of passive standby power of HED . 13
5.1.9 Re-supply of AC power to HED . 13
5.1.10 Study of standby mode . 14
5.1.11 Internal interface with existing home network. 14
5.1.12 External interface with electric power service provider . 14
5.1.13 Demand and supply management of renewable energy . 14
5.1.14 Estimation of monthly electricity rate . 14
5.1.15 Provision of advanced user interface . 14
5.2 Functional requirements of the ESS client . 15
5.2.1 General . 15
5.2.2 Network interface with ESS server . 15
5.2.3 Support of EPCM protocol . 15
5.2.4 Measurement of energy consumption . 15
5.2.5 Provision of user settings . 16
5.2.6 Energy usage modeling . 16
5.2.7 Types of ESS clients . 17
5.2.8 Support of protection circuit . 17
5.2.9 Internal DC power control . 17
5.2.10 Automatic cut-off of passive standby power of HED . 17
5.2.11 Re-supply of AC power to HED . 17
5.2.12 Operation modes . 17
6 Classification of ESS . 18
6.1 Classification of ESS server . 18
6.2 Classification of ESS client . 18

TS 62654 © IEC:2012(E) – 3 –
7 Energy consumption measurement of HED . 19
Annex A (informative) Energy consumption measurement of ESS client . 20
Bibliography . 24

Figure 1 – Architecture of energy saving system . 9
Figure 2 – Basic functions of an ESS server and its possible extensibility . 10
Figure 3 – Basic architecture of ESS client . 11
Figure 4 – Example of non-network energy measurement device . 19
Figure A.1 – Measurement in off mode of the ESS client . 20
Figure A.2 – Measurement in standby passive mode of ESS client . 21
Figure A.3 – Measurement in standby active mode of an ESS client . 21
Figure A.4 – Measurement in on mode of an ESS client . 22

Table 1 – Operating mode of ESS server and client . 8
Table 2 – Functional requirements of ESS server . 12
Table 3 – ESS server types . 13
Table 4 – Functional requirements of ESS client . 15
Table 5 – An example for measurement items, range and resolution . 16
Table 6 – User settings of ESS client . 16
Table 7 – ESS client types . 17
Table 8 – ESS server classes . 18
Table 9 – ESS client classes . 18
Table A.1 – Conditions for measurement in on mode and performance evaluation
indices . 23

– 4 – TS 62654 © IEC:2012(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NETWORK-BASED ENERGY CONSUMPTION MEASUREMENT –
ENERGY SAVING SYSTEM – CONCEPTUAL MODEL

FOREWORD
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The main task of IEC technical committees is to prepare International Standards. In
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• the required support cannot be obtained for the publication of an International Standard,
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• the subject is still under technical development or where, for any other reason, there is the
future but no immediate possibility of an agreement on an International Standard.
Technical specifications are subject to review within three years of publication to decide
whether they can be transformed into International Standards.
IEC 62654, which is a technical specification, has been prepared by technical area 12: AV
energy efficiency and smart grid applications, of IEC technical committee 100: Audio, video
and multimedia systems and equipment.

TS 62654 © IEC:2012(E) – 5 –
The text of this technical specification is based on the following documents:
Enquiry draft Report on voting
100/1928/DTS 100/1987/RVC
Full information on the voting for the approval of this technical specification can be found in
the report on voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• transformed into an International Standard,
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

– 6 – TS 62654 © IEC:2012(E)
INTRODUCTION
Due to unusual climate change such as global warming, the need for technologies regarding
energy efficiency and reduction of carbon dioxide emission through energy saving and
efficient energy usage is growing. Especially in the IT industry, although its energy
consumption is low compared to other business areas, an increase in energy efficiency for
whole business areas is expected by using IT technologies. For example, a substantial
reduction in energy consumption can be achieved in homes, where most of electrical energy
is consumed.
As technologies evolve, the number of electric appliances in homes increases. Accordingly,
the consumers tend to check the amount of energy consumption of each appliance and its
rate. In addition, for users’ convenience, many appliances including multi-media equipment
are provided with remote controls, and become network-enabled. Thus, their standby power is
increasing considerably.
If the energy consumption of home appliances can be monitored or shown in real time, energy
consumption can be reduced by 10 % to 20 % according to statistics. Furthermore, by
decreasing the standby mode power for the appliances that are not in use, additional power
can be saved. Besides, the use of renewable energies like solar energy or wind energy is
spreading in homes. Furthermore, smart grid, an intelligent power network, is expected to be
introduced soon. So a system that manages production, consumption, and sales of energy is
indispensable.
This specification defines an energy saving system (ESS) providing functions and architecture
for a network-based energy consumption measurement model of AV multimedia equipment
and systems, efficient usage of electric energy, intelligent energy saving, and a basic possible
platform in homes for future power network systems. Specifically, it provides the following:
• basic architecture of ESS;
• functional requirements of an ESS client;
• functional requirements of an ESS server;
• classification of ESS clients;
• classification of ESS servers;
• energy consumption measurement of home electronic devices;
• energy consumption measurement of an ESS client.

TS 62654 © IEC:2012(E) – 7 –
NETWORK-BASED ENERGY CONSUMPTION MEASUREMENT –
ENERGY SAVING SYSTEM – CONCEPTUAL MODEL

1 Scope
This Technical Specification defines the architecture and functional requirements of an energy
saving system (ESS) that measures energy consumption of each home appliance, including
AV multimedia equipment and systems, and shows how to reduce its standby power. With
respect to energy consumption measurements, this specification extends only to AC power
environments in premises.
2 Terms, definitions and abbreviations
For the purposes of this document, the following terms, definitions, and abbreviations apply.
2.1 Terms and definitions
2.1.1
ESS server
energy saving system server
component of an energy saving system which gathers power consumption data of home
electric devices, measured by ESS clients through communication between an ESS server
and clients
2.1.2
ESS client
energy saving system client
component of an energy saving system, which is physically located between an AC power
source and a home electric device so as to supply or to block AC power
Note 1 to entry: An ESS client is operated by AC/DC power and it measures the power consumed by a home
electric device connected to the ESS client. The result of the measurement is sent to an ESS server through
communication with the ESS server.
2.1.3
ESS network
energy saving system network
network that consists of an ESS server and one or more ESS client(s) which communicate(s)
with the ESS server
2.1.4
EPCM protocol
electric power control and monitoring protocol
application layer protocol between an ESS server and ESS clients
Note 1 to entry: This protocol controls power of the devices connected between the ESS server and an ESS client
and gathers the power consumption data from the ESS client.
2.1.5
low-power communication module
communication module that supports low-power data transmission between the ESS server
and ESS clients and that has the dedicated power that processes the EPCM protocol
Note 1 to entry: A low-power communication module is a hardware module in an ESS client and is responsible for
low-power communication with an ESS server. It physically transmits data generated from a processing unit in an
ESS client and receives data from the ESS server. Low-power communication is essential to ESS clients so as to
minimize self-power consumption caused by frequent communication with an ESS server.

– 8 – TS 62654 © IEC:2012(E)
2.1.6
home electronic device
device group that includes home appliances
EXAMPLE Home electronic devices are multimedia equipment and systems, information appliances, home
network devices, etc.
2.2 Abbreviations
EEC Energy Efficiency Class
EPCM Electric Power Control and Monitoring
ESS Energy Saving System
GUI Graphic User Interface
HED Home Electronic Device
LPCM Low-Power Communication Module
PLC Power Line Communication
PnP Plug and Play
3 Specification of operating modes
Operating modes of ESS server and clients are specified in Table 1.
Table 1 – Operating mode of ESS server and client
Mode ESS server ESS client
Disconnected The ESS server is disconnected from all The ESS client is disconnected from all
external power sources. external power sources.
Off The ESS server is connected to a power The ESS client is connected to a power
source, does not perform any functions source, does not perform any functions
specified in 5.1, and cannot be switched into specified in 5.2, and cannot be switched into
any other mode with the remote control unit, any other mode with the remote control unit,
an external or internal signal. an external or internal signal.
Standby- The ESS server is connected to a power The ESS client is connected to a power
passive source, does not perform any functions source, does not perform any functions
specified in 5.1, but can be switched into any specified in 5.2, but can be switched into any
other mode with the remote control unit or an other mode with the remote control unit or an
internal signal. internal signal.
Standby- The ESS server is connected to a power The ESS client is connected to a power
active source, does not perform any functions source, does not perform any functions
specified in 5.1 except a basic communication specified in 5.2 except a basic communication
function for receiving a mode-change function for either receiving a mode-change
command from an external source, and can command from an ESS server or waiting until
additionally be switched into another mode an initial registration process finishes, and
with that external command. can additionally be switched into another
mode with that external command.
On  The ESS client is connected to a power
(measure) source and perfoms an energy consumption
measurement.
On The ESS server is connected to a power The ESS client is connected to a power
(communicate) source, performs functions specified in 5.1, source, performs functions specified in 5.2,
and communicates with one or more ESS and communicates with an ESS server.
clients or an external source.

TS 62654 © IEC:2012(E) – 9 –
4 Architecture and basic functions of ESS
4.1 ESS network
An ESS network consists of an ESS server and one or more ESS clients, as shown in
Figure 1. Each ESS client does not communicate with other ESS clients but the ESS server.
The communication is enabled by the no-new-wire communication method such as wireless
communication and PLC. Accordingly, it does not require extra wiring for configuring the home
ESS network. Note that the ESS server can provide various network interfaces according to
the network types that ESS clients can support. This specification does not specify the
network interface types between the ESS server and ESS clients.
Each home electronic device (HED) can use the AC power provided from an ESS client
regardless of its type and networking feature. The user can utilize the power consumption
monitoring and power control functions for only the HEDs powered from ESS clients. This
means that the user can connect only the desired devices to ESS clients and can use the ESS
network services for the connected HEDs.
The ESS network can be configured separately from the existing home network and provides
functions for energy consumption measurement, monitoring, and intelligent energy saving that
are different from device control services, data services, and multimedia services provided by
the existing home network.
Existing home network
Legacy Legacy
Networked Networked
home home
·····
device device
appliance appliance
#1 #2
#1 #2
Electrical
ESS server
power
(or
AC power
service
home gateway)
provider
ESS ESS ESS ESS
·····
client client client client
#1 #2 #n-1 #n
AC power
IEC  1620/12
ESS network
Figure 1 – Architecture of energy saving system
4.2 ESS server
As shown in Figure 2, the ESS server basically provides the physical link and upper layer
network protocol that enable network interfaces to ESS clients. Based on this communication
channel, the ESS server sends power control commands and gathers energy consumption
data in real time by using an EPCM protocol. Among EPCM applications in the application
layer, the basic application program processes the gathered data to display the consumed
power-related information in the form of text or GUI in real time.
The ESS server can be implemented to additionally support the existing home network
services. On the other hand, the existing home gateway or home server may include the
functions of the ESS server. In this case, the EPCM functions may be integrated into the
existing home network protocol or home network middleware. The ESS application program
can also be implemented considering the scalability and compatibility toward the home
network applications.
– 10 – TS 62654 © IEC:2012(E)
Furthermore, the ESS server can also be designed to interoperate with future power service
applications (i.e. managing production and consumption of renewable energy, demand
response, smart grid applications, etc.) or with the network run by a power service provider.
By this extension of the network interfaces and application programs not only to the home
network but also to the power service provider, a variety of electrical power services can be
brought into home.
ESS server
Extensible functions for electric Extensible functions for home network
power service (optional) (optional)

ESS applications
Future applications Home network applications
EPCM API
Future protocol or middleware
Home network middleware
EPCM protocol
For Smart Grid
Network protocols Network protocols
Network protocols
One or more
Network interface for One or more
ESS network
electrical power service provider existing home network interfaces
interfaces
Existing
Electrical power service provider
ESS clients WAN
home network
network
IEC  1621/12
Figure 2 – Basic functions of an ESS server and its possible extensibility
By utilizing the EPCM protocol and basic functions of the ESS server, the following basic
applications can be implemented.
• Real-time electric power consumption monitoring application for each HED.
• Real-time total home electric power consumption monitoring application.
• Standby power reducing application by finding HEDs in standby mode.
• User-configurable warning application that enables the users to set the rate, calculates the
estimated rate of the upcoming month, and alerts when the estimated rate is expected to
exceed.
• Power control application that switches each device power into on or off and restricts the
use of a specific device during a specific period of time.
• Secured remote power control and monitoring application for the users outside the home.
• Other applications.
4.3 ESS client
An ESS client consists of an AC part and DC part, as shown in Figure 3. Additionally, a circuit
protection module that protects the circuit from over-current, electric leak, and electric arc,
can be added into the ESS client. The DC power on/off control module can also be opt
...