National Smart Metering Program
NSMP Business
Requirements Work Stream
Smart Meter National
Minimum Functional
Specification
Executive Briefing Paper
Version number:
Version 0.2
Status:
Draft
Author:
Dr Martin Gill and Harry Koller
Date published:
2 October 2009
File name:
NSMP BRWG Briefing Paper v0.2.doc
NSMP Business Requirements Work Stream
Smart Meter Functional Specification Briefing Paper
Table of Contents
1
DOCUMENT CONTROL .......................................................................................................................... 3
1.1
1.2
1.3
VERSION CONTROL ............................................................................................................................... 3
APPROVAL ............................................................................................................................................ 3
REFERENCES ......................................................................................................................................... 3
2
PURPOSE OF BRIEFING PAPER ........................................................................................................... 4
3
BRWG TERMS OF REFERENCE AND METHODOLOGY ................................................................ 4
4
NATIONAL MINIMUM FUNCTIONALITY FOR SMART METERS ............................................... 5
4.1
4.2
4.3
5
RECOMMENDED MINIMUM FUNCTIONS ................................................................................................ 5
MAJOR ISSUES/RECOMMENDED RESOLUTIONS ..................................................................................... 6
OUTSTANDING REQUIREMENTS ........................................................................................................... 10
SMI FUNCTIONAL SPECIFICATION - REMAINING WORK ........................................................ 11
APPENDIX A – GLOSSARY ............................................................................................................................ 12
APPENDIX B – COMPARISON WITH MCE SMART METER NATIONAL MINIMUM FUNCTIONS
............................................................................................................................................................................... 14
APPENDIX C – COMPARISON WITH VICTORIAN AMI SPECIFICATION......................................... 15
APPENDIX D LIST OF RELATED TECHNICAL PAPERS ........................................................................ 17
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1
Document Control
1.1
Version Control
Version
Date
Description
Amended by
0.1
29/09/2009
First Draft
M. Gill and H. Koller
0.2
2/10/2009
Final draft
H. Koller
1.2
Approval
Authorised by
Signature
Date
NSSC Program Director
1.3
References
The following documents are referred to in this document.
Document Name
Version
ADVANCED METERING INFRASTRUCTURE
Minimum AMI Functionality Specification (Victoria)
Release 1.1
September 2008
National Electricity Rules Chapter 7 Metering
Version 26
Cost Benefit Analysis of Smart Metering and Direct Load Control:
Phase 1 Overview Report
17 September 2007
Cost Benefit Analysis of Smart Metering and Direct Load Control:
Overview Report for Consultation
29 February 2008
MCE Decision paper
A National Minimum Functionality for Smart Meters
13 December 2007
MCE Decision paper
SMART METER DECISION PAPER
13 June 2008
Standing Committee of Officials of the Ministerial Council on Energy
Cost-Benefit Analysis of Options for a National Smart Meter Roll-Out
(Phase Two – Regional and Detailed Analyses), Regulatory Impact
Statement for Decision
June 2008
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th
th
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2
Purpose of briefing paper
The purpose of this briefing paper is to seek the NSSC’s endorsement of the recommended national
minimum functions for a smart meter. The Secretariat is not seeking endorsement of performance and
service levels for the smart meter infrastructure (SMI) as this work has not been completed by the BRWG.
However the Secretariat recommends that before performance and service levels for the smart meter
infrastructure are completely addressed by the BRWG, the NSSC should provide feedback on the
recommended national minimum functions for a smart meter.
This briefing paper provides the following information in an Executive overview to support the NSSC’s
considerations:

Section 3 BRWG Terms of Reference and Methodology – an outline of the methodology used to
develop the recommended national minimum functions for smart meters

Section 4 National Minimum Functionality for Smart Meters - the list of the national minimum
functions and a summary of the main issues/options considered by the BRW with recommended
resolutions

Section 5 SMI Functional Specification - Remaining Work
Appendix B summarised differences between the MCE list of smart meter minimum functions and the
revised minimum list
Appendix C summarizes differences between the smart meter function definitions and the Victorian AMI
Functional Specification.
3
BRWG Terms of Reference and Methodology
The BRWG adopted a methodology for prepare the SMI Functional Specification consistent with the terms
of reference approved by the NSSC on 11 December 2008.
The BRWG is to prepare a SMI Functional Specification that includes:

SMI Strategic Objectives: Mapping the MCE and other stakeholders’ SMI objectives to the SMI
enabling functions so as to confirm the required SMI minimum functions (e.g. identify the
mechanisms that will be required to deliver the SMI objectives)

SMI Components: Identify and confirm the SMI components to be included in the SMI Functional
Specification

SMI Requirements: Specify the business requirements, performance requirements, and service
standards for the SMI components
The BRWG was also to take into account the indicative cost and benefits using the Phase 2 CBA study
managed by NERA Economic Consulting as an initial baseline in considering any changes to the initial list
of minimum functionality requirements endorsed by MCE in December 2007.
The methodology included the following steps:
1. Adopted a technology neutral and standards based approach consistent the NSSC’ Vision
Statement’
1
2. Adopted the list of MCE functions from the MCE decision papers as a starting point
2
3. Mapped the MCE Policy Objectives to the Smart Meter Functions
1
MCE Decision paper, A National Minimum Functionality for Smart Meters MCE Decision paper, 13
December 2007 and MCE Decision paper, SMART METER DECISION PAPER, 13 June 2008
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4. Identified and defined the smart metering infrastructure components to support a smart meter
5. Adopted the Victorian AMI Specification function definitions as an initial basis for discussion
6. Where there was gap, the NERA specification was used (e.g. dedicated direct load control)
7. Where necessary functionality was enhanced, provided this was possible at zero or minimal
incremental cost to a smart meter
8. Did not address meter installation costs and the costs of associated IT and systems costs (meter
data and communications management, meter transactions management, and retailer and
distributor systems) as this is to be addressed in jurisdictional pilots and trials
9. Filled gaps in Applicable Australian Standards with international standards after consultation with
appropriate specialists (CSIRO or National Measurement Institute or University experts)
10. Conducted a peer review of the recommended national minimum function definitions with the
Metrology Reference Group
11. Prepared detailed technical working papers (14 papers) to support the SMI Functional
Specification ( a list of the papers is given at Appendix D)
4
National Minimum Functionality for Smart Meters
4.1
Recommended Minimum Functions
Table 1: List of functions included in the Minimum Functional Specification
Minimum Functional Requirements
MCE Function Number
Half-hourly consumption measurement and recording
Function 1
The recording of measured quantities in trading periods
Four Quadrant Metering
Functions 10/11
Energy measurements supported by the meter
Remote Collection
Functions 2, 9 and 19
Collection of Events and Energy recorded in the meter
Local reading – hand-held device
Function 3
Ability to configure the meter and read data locally
Visual display on meter
Function 4
Ability for customers to obtain basic information from the meter
Meter Clock Synchronization
Function 7
Ensuring that data is collected with the correct time reference
Load Management through a dedicated circuit
Functions 8/14
Direct load control including existing ripple control functionality
Switching of the Supply Contactor
Function 12
Enabling remote energisation and de-energisation of customer premise
Supply Capacity Control
Function 13
Emergency operation shares available generating capacity among consumers
2
Standing Committee of Officials of the Ministerial Council on Energy Cost-Benefit Analysis of Options for
a National Smart Meter Roll-Out (Phase Two – Regional and Detailed Analyses), Regulatory Impact
Statement for Decision, June 2008, page 32.
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Minimum Functional Requirements
MCE Function Number
potentially avoiding rolling back-outs.
Export and Import operation can reduce truck rolls and enhance network
stability
Home Area Network Interface using Open Standard
Function 16
Provides consumer education, supports interaction with the customer and
enables greater flexibility in load management
Quality of Supply & other event recording
Function 19
Captures Quality of Supply measures such as outages, over and under
voltage events, load control switching, etc. Also supports Security events such
as meter access, meter configuration changes, devices joining the HAN, etc
Meter Loss of Supply detection and Outage Detection
Function 20
Provides early notification of outages and confirmation of power restore
Remote Service Checking
Function 22
Enables the remote checking of supply to the meter
Meter Settings Reconfiguration
Function 25
Ensures that the meter can meet a range of requirements
Software upgrades
Function 26
Provides confidence that potential problems can be rectified without the need
for site visits.
Plug and Play Device commissioning
Function 29
Simplifies the deployment of the SMI technology
Communications and Data Security
Function 5
Provides confidence that the SMI does not compromise grid security or
personal privacy and that all data (especially billing data) is correct
Tamper Detection
Function 6
Meter Communications: Issuing Messages and Commands
Where necessary provides messaging to groups of meters
4.2
Major Issues/Recommended Resolutions
Smart Meter Minimum Functional Requirement
Reducing jurisdictional meter differences ensures that meter vendors offer similar products providing the
greatest choice of solution. Specifying enhancements to proposed functionality was only included when
this was possible at zero incremental meter cost.
Appendix C describes the areas where the national minimum specification differs from the Victorian AMI
Specification. The Victorian DPI participated in the BRWG discussions in all of these enhancements
(through Phil Perry).
Applicable Meter Configurations
There was a great deal of debate about the different meter configurations. Two element single phase
meters are required for the continued separate metering of off-peak tariffs and to support gross feed-in
tariffs. The SMI Functional Specification does not specify a particular meter configuration enabling the
selection of the most appropriate and cost effective meter configuration by the Meter Provider.
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Applicable Standards
There was a desire that meter functionality comply to available standards and that these standards should
also detail tests to ensure meters will perform correctly in the field. A number of gaps in existing Australian
meter standards were identified and addressed. For example while the Victorian AMI specification requires
under and over voltage measurement there is no requirement for this to be tested, this has been
addressed in the SMI Functional Specification with the specification of an appropriate standard.
Half-hourly consumption measurement and recording (Function 1)
There was a considerable amount of debate around the number of days of storage that meters should
provide. The BRWG eventually settled on 35 days (as required for Type 4 meters) rather than the implicitly
stated 200 days required in the Victorian AMI Specification (to meet type 5 requirements).
Four Quadrant Metering (Functions 10/11)
Meeting the MCE Objective to support onsite generation generated considerable discussion. Most
jurisdictions require net metering, however customers who invest in onsite generation require access to
gross metering in order to view the output of their generator. This was resolved by adding a new two
element metering configuration. It should be noted that to implement this meter configuration only requires
additional software in a standard two element meter, no additional hardware is required.
The addition of Reactive Energy measurement to support network power factor audit was supported after
work group members provided the BRWG with evidence that this incurred zero incremental cost to a
single phase meter.
Remote Collection (Functions 2, 9 and 19)
The separation of recording and collection was desirable to avoid meter reconfiguration when performing
occasional audits of reactive energy (It should be noted that meters being deployed in Victorian will reset
all interval data storage when reconfigured leading to concerns about the potential loss of energy data).
Another advantage of grouping the collection functions was to reduce duplication in the specification of the
Performance Levels.
Visual display on meter (Function 4)
Consumer groups highlighted that not all consumers will pay for an In Home Display (IHD) so the meter
must provide basic information, especially to allow a consumer to check the consumption shown on their
bill against the meter’s total accumulated active energy. There was also a requirement for those who
3
install onsite generation to be able to view Active Power without the need to purchase an IHD.
To reduce call centre traffic consumer groups suggested that the meter must display a timer indicating
when power will be restored after exceeding Supply Capacity Limits.
Meter Clock Synchronization (Function 7)
There was a desire to support time zones other than Eastern Standard Time, however Secretariat
recommended that at a minimum all meters operate on Eastern Standard Time which is the current NER
requirement.
3
The measurement of Active Power is a primary requirement of the HAN, allowing this display to be
provided at zero incremental cost.
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Load Management through a dedicated circuit (Functions 8/14)
The NERA study stated that Smart Meters were required to implement ripple control functionality. There
was a great deal of debate on the specific requirements given the differences in ripple control capabilities
between Victoria and NSW and Queensland. Therefore the minimum specification includes a number of
mandatory and optional requirements. For example, automatic under frequency response is an optional
feature.
Switching of the Supply Contactor (Function 12)
To meet the Queensland jurisdictional requirement of validating the presence of someone at the premise
before energisation, an ARM command was added in addition to the Load Monitoring functionality which
has been adopted in Victoria. This will incurs a zero incremental cost to a smart meter and will represents
a much simpler requirement than load monitoring.
The provision of an ARM in a smart meter is mandatory but it can also be remotely or locally enabled or
disenabled.
The Secretariat has confirmed that the smart meters being deployed in Victoria provide support for the
ARM function.
Supply Capacity Control (Function 13)
There was confusion that in the Victorian AMI Specification Normal supply capacity limits actually refers to
two separately configured settings. In addition consumer groups expressed concern about the use of
Normal in relation to supply capacity control for credit control purposes.
It was therefore proposed that the specification explicitly identify the two limits (Import Supply Capacity
Control and Export Supply Capacity Control), however functionality remains unaltered.
There was greater support for Emergency Supply Capacity Limiting however the Victorian AMI
Specification has the potential to result in Synchronized load switching. A technical discussion paper
presented a number of solutions including the final method documented in the SMI Functional
Specification. The new method was considered more equitable in the sharing of available generating
capacity and uses the customer load to randomize load switching. This is a software change and does not
have any hardware implications.
During discussions about Capacity Control consumer groups highlighted that the separate measurement
of import and export energy flows might result in a consumer with onsite generation being disconnected
even if they are supplying energy to the grid. Wording was added trying to capture this requirement.
Home Area Network using Open Standard (Function 16)
The Home Area Network (HAN) was identified as a key component in the delivery of the MCE objectives.
The minimum list of functions ensures that the meter will provide a HAN interface and that the SMI will
support messaging to devices on the HAN. The specific HAN standard providing this functionality has not
been specified after workgroup members expressed concerns that it was premature to do so.
A HAN Research Study was proposed to assess competing solutions. The release of this study was
4
deferred after the discovery of a much larger study which failed to arrive at a clear winning technology.
Following the recommendation of other HAN studies it has been suggested that a more comprehensive
4
The study was prepared for the Energy Retail Association (UK) by a work group comprising some 72
stakeholders including solution vendors, energy retailers and distributors.
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set of requirements be developed, that rapidly evolving HAN standards continue to be considered and field
testing of available solutions be undertaken.
Quality of Supply & other event recording (Function 19)
Following advice from a Defence Signals Directorate Security Expert, it is proposed to have two event logs
in the meter. One log will record the 100 most recent Quality of Supply events the other log will record
Access Security events. This ensured that numerous Quality of Supply events would not overwrite
attempts to tamper with the meter. The change requires a minor amount of additional storage but in
normal operation will not have an impact on the communications requirements of the SMI.
Meter Loss of Supply detection and Outage Detection (Function 20)
There was considerable debate around the need for meters to immediately verify a power outage (via a
last gasp transmission) compared to the NERA recommended scheme of inferring a power outage from a
loss of communications with the meter. Two items were clear, fast notification of an outage and outage
restore information was considered useful. It was therefore decided to leave the functional description
unchanged, but for the Performance Levels to suggest that it was possible to quickly detect outages for a
small percentage of the affected meters and a larger percentage for power restore.
Remote Service Checking (Function 22)
During BRWG discussions it became clear that all SMI will support Remote Service Checking. The
contentious issue was simply the Performance level associated with specifying the functionality “in realtime”. It was therefore agreed to include the function in the minimum list, however the reference to realtime was deleted and the performance and service level needs to be agreed.
Communications and Data Security (Function 5)
It was not felt possible to specify a technical solution capable of addressing risks associated with the
deployment of presented in different deployment areas.
Therefore the smart Meter infrastructure data and communications security requirements should be
addressed using a risk based approach rather than prescribing a technology specific solution.
During the planning process for the procurement, deployment and maintenance of Smart Metering
Infrastructure a comprehensive risk assessment must be completed. The assessment should be
conducted in accordance with AS27001 and AS27002. As a minimum the risk assessment should address
the vulnerabilities listed in the current version of the USA AMI System Security Requirements (AMI-SEC).
The responsible person is required to take reasonable steps to materially address identified risks to the
specified target level.
The risk assessment should be updated annually. The annual review will include an assessment of any
gap between the desired target level and the current implementation.
The risk assessment should be conducted in addition to any jurisdictional legislation covering protection of
critical infrastructure and personal privacy.
Tamper Detection (Function 6)
Discussions could not provide specific requirements for tamper detection satisfying jurisdictional
differences. The SMI Functional Specification therefore requires that tamper be considered as part of the
risk assessment conducted under the Communications and Data Security (Function 5) requirements.
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4.3
Outstanding requirements
Despite a great deal of support and interest in a number of functions it was not possible to include them in
the current minimum list.
Table 2: Functions still being considered for the Minimum List
Outstanding Requirements
MCE Function Number
Customer Supply Monitoring
Function 21
Automatic detection and reporting of potentially dangerous wiring conditions
Interoperability for meters/devices at application layer
Function 23
Ability for multiple parties to access the SMI functionality
Hardware component interoperability
Function 24
Open standard providing interoperability between meters and communications
solutions from different vendors
Customer Supply Monitoring (Function 21)
The ability of meters to detect dangerous wiring conditions has the potential to save lives, however meters
offering this functionality are not currently available. The wide spread deployment of Aurora’s
CablePI/WireAlert indicates that it is technically feasible to test for a number of potentially dangerous
wiring faults.
There is concern about the consequences of deploying this function when it is acknowledged that it may
not be possible to detect all faults or to report a fault in a sufficiently timely manner.
It is currently recommended that this function will not be included as a mandatory minimum. It is
suggested that it be referred to the Pilots and Trials Working Group for lab and field trials of potential
solutions.
Interoperability for meters/devices at application layer (Function 23)
The ability to provide multiple parties access to the SMI Functions was seen as advantageous. At present
there is no open standard offering access to SMI, however there is a stated desire to develop these
standards. Several programs are reviewing standards with the aim of accelerating their development
(funded from SA stimulus payments). Even once standards are developed it will be necessary to ensure
access to SMI functionality is coordinated and that it does not compromise system integrity.
The existing MSATS procedures supports multi-party access meaning that there is no urgency to make a
decision. Given the lack of existing standards and current programs of work to develop interoperable
standards the BRWG has proposed deferring the final decision until 2012 (or earlier if a suitable standard
is identified).
Hardware component interoperability (Function 24)
At present the majority of SMI solutions rely on proprietary components, limiting the ability to select meters
and communications from different vendors. A number of overseas (particularly European) initiatives are
working to develop open standards providing hardware interoperability. These have been identified and it
is understood that some are being considered for deployment in planned Pilots and Trials. At this time the
BRWG is unable to recommend an appropriate standard and has therefore recommends deferring any
decision.
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5
SMI Functional Specification - Remaining Work
The BRWG needs to complete the following tasks in order to complete the SMI Functional Specification:

Complete outstanding actions for some meter functions at 19 October 2009 workshop:
o
BRWG Action 20090810.17: There is a desire to provide a two element solution capable
of satisfying either net or gross tariff metering via optional programmable parameters. This
will be discussed in a separate paper.
o
BRWG Action 20090916.15: - BRWG is unsure of the lower measurement time Distribution business (who currently deploy ripple control equipment) to report back with
the settings they typically used for under frequency and what the equipment supports for
the 19 Oct09 workshop.
o
BRWG Action 20090916.21: There is a desire to ensure that consumers who install onsite generation are not turned off due to separate measurement of Export and Import
active energy flows. MG is to propose requirements for discussion on 19 October 2009.
o
BRWG Action 20090810.19: The Secretariat is to prepare a program change request to
develop HAN Use cases for review by the September workshop and for submission to the
NSSC in October.
o
BRWG Action 20090916.22: An interface to directly control a Demand Response Enabling
Device (DRED), as defined in AS4755.3.1 via voltage free contacts will be discussed in
the September workshop. This interface would be in addition to any interface offered via
the HAN) Further discussion about a meter interface to AS4755 was deferred until the 19
Oct 09 meeting.

Specify the requirements for meter communications – issuing messages and commands to meters
- BRWG needs to determine whether it wishes to recommend adoption of the Victorian
specification which has been removed from this version of the SMI F.S. due confusion on how the
Victorian Specification is supposed to operate

Specify performance and service levels for each smart meter function
These matters will be presented to the NSSC for review at the 16 December 2009 meeting.
Once the performance and service levels are defined, the SMI Functional Specification will provide a
definition of business requirements for the smart metering services to be provided by the smart metering
infrastructure.
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Appendix A – Glossary
The following acronyms are in the NSMP Glossary.
ACOSS
Australian Council of Social Services
AEMC
Australian Energy Market Commission
AEMO
Australian Energy Market Operator
AER
Australian Energy Regulator
AMI
Advanced Metering Infrastructure (Victorian smart metering program)
AS
Australian Standard
B2B
Business to Business
BPRG
B2B Procedures Reference Group (established under the IEC)
BPPWG
Business Processes and Procedures Working Group (established under the NSSC)
BRDRG
Business Requirements Definition Reference Group (established under the AMI
program)
BRWG
Business Requirements Working Group (established under the NSSC)
CATS
Consumer Administration and Transfer Solution
COAG
Council of Australian Governments
DNSP
Distribution Network Service Provider
DRET
Commonwealth Department of Resources, Energy and Tourism (also referred to as
RET)
EEEC
Equipment Energy Efficiency (E3) Committee
ENA
Energy Networks Association
ERAA
Energy Retailers Association of Australia
ESC
Essential Services Commission
FRC
Full Retail Contestability
FRMP
Financially Responsible Market Participant
HAN
Home Area Network
IEC
Information Exchange Committee (established under section 7.2A.2 of the Rules)
IHD
In-home Display
LNSP
Local Network Service Provider
MCE
Ministerial Council on Energy (established under the COAG)
MDA
Metering Data Agent
MDF
Metering Data File
MDFF
Metering Data File Format
MOU
Memorandum of Understanding
MRG
Metrology Reference Group (established under the RMEC)
MSATS
Market Settlement and Transfer Solution
MTWG
Metering Technology Working Group (established under the AMI program)
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NCRE
National Consumer Roundtable on Energy
NECF
National Energy Consumer Framework
NEL
National Electricity Law
NEM
National Electricity Market which excludes Western Australia and Northern Territory
NEMMCO
National Electricity Market Management Company
NEO
National Electricity Objective (as set out in section 7 of the NEL)
NER
National Electricity Rules
NSMP
National Smart Metering Program
NSSC
National Stakeholder Steering Committee (National Smart Metering Program)
NT
Northern Territory
OMRV
Operating Model Requirements Version (Victorian AMI Program)
PDRG
Business Process & Data Reference Group (established under the RMEC)
PwC
PricewaterhouseCoopers
PTWG
Pilots and Trials Working Group (established under the NSSC)
RET
Commonwealth Department of Resources, Energy and Tourism
RIS
Regulatory Impact Statement
RFP
Request for Proposal
RMEC
Retail Market Executive Committee (an advisory committee to NEMMCO)
RP
Responsible Person
RPWG
Retail Policy Working Group (established under the MCE)
RWG
Regulation Working Group (established under the NSSC)
SCO
Standing Council of Officials (as established under the MCE)
SM
Smart Metering
SMCN
Smart Metering Communication Network
SME
Subject Matter Expert
SMI
Smart Metering Infrastructure
SMMS
Smart Metering Management System
SMWG
Smart Metering Working Group (established under the SCO)
SWIS
South Western Interconnected System in Western Australia
TFWG
Testing Framework Reference Group
TOR
Terms of Reference
TRWG
Technical and Regulatory Working Group (established under the AMI Program)
WA
Western Australia
WAIMO
Western Australian Independent Market Operator
WEM
Wholesale Electricity Market (Western Australia)
WIGS
Wholesale Inter-connector Generator and Sample
WG
Working Group
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Appendix B – Comparison with MCE Smart Meter National
Minimum Functions
The table below describes the areas where the national SMI Functional Specification differs from the list of
Smart Meter National Minimum Functions proposed by MCE.
Table 17: Final Functionalities Recommended by the Consultants for Inclusion in a Minimum National
5
Meter Specification
MCE List
NSSC recommendation
Core functions
1
Half-hourly consumption measurement and
recording
2
Remote reading
3
Local reading – hand-held device
4
Local reading – visual display on meter
5
Communication and data security
6
Tamper detection
7
Remote time clock synchronisation
8
Load management at meters through a
&14 dedicated controlled circuit
Energy measurement
9
Daily remote reading
10
Power factor measurement (three phase
meters only)
11
Import/export metering
Switching and load management
12
Remote connect/disconnect
13
Supply capacity control
Facilitation of customer interaction
16
Interface to home area network using open
standard
Supply and service monitoring
19
Quality of supply and other event recording
20
Meter loss of supply and detection
22
Real-time Service Checking
Upgradeability and configurability
25
Remote configuration
26
Remote software upgrades
29
Plug and play device commissioning
No change
No change
No change
No change
No change
No change
No change
No change
No change
Have included single phase meters
No change
No change
No change
No change
No change
No change
Added – but without “Real-time” performance
level
No change
No change
No change
5
Standing Committee of Officials of the Ministerial Council on Energy
Cost-Benefit Analysis of Options for a National Smart Meter Roll-Out (Phase Two – Regional and Detailed
Analyses) Regulatory Impact Statement For Decision, June 2008, page 121
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Appendix C – Comparison with Victorian AMI Specification
The table below describes the areas where the national SMI Functional Specification differs from the
Victorian AMI Specification. The Victorian DPI participated in all BRWG discussions through Phil Perry.
Smart Meter Minimum Functional
Requirement
Victorian AMI Specification
Applicable Meter Configurations
Summary table added to clearly outline differences between
different meter configurations
Added two element meters
Applicable Standards
Have outlined a number of relevant standards to ensure that meter
functionality is appropriately tested
Half-hourly consumption
measurement and recording
(Function 1)
Decreased the amount of storage from implicit Type 5 requirement
of 200 days to 35 days
Added support for a broader range of vendor implementations of
interval data storage, with additional detail to ensure meets the
requirements (avoiding rounding errors)
Four Quadrant Metering
(Functions 10/11)
Single phase meters support reactive energy measurement
(intended to be used for network audit purposes)
Remote Collection (Functions 2, 9
and 19)
Allow data to be recorded in the meter but not necessarily collected
to avoid risk of loss of energy data due to meter reconfiguration
Local reading – hand-held device
(Function 3)
No functional change, wording change adding the Type 5
performance requirement for data download speed was already
implicitly required in the Victorian AMI Specification.
Visual display on meter
(Function 4)
Changes satisfy consumer requirements and do not incur
incremental costs
Meter Clock Synchronization
(Function 7)
No change
Load Management through a
dedicated circuit (Functions 8/14)
Description of current Ripple functionality. Functionality stated as
Optional
Switching of the Supply Contactor
(Function 12)
Addition of the ARM command to meet jurisdictional requirements
Supply Capacity Control
(Function 13)
Customer equity concerns resulted in a modification to Emergency
Supply Capacity Limiting
Home Area Network using Open
Standard (Function 16)
Have not currently specified a single open HAN standard
Quality of Supply & other event
recording (Function 19)
Separated events into Quality of Supply and Security/Access stored
in separate logs. Under normal operation there is no material
difference between the two requirements
Meter Loss of Supply detection and
Outage Detection (Function 20)
Performance level clarifies the requirement for fast notification of
outage from a small number of meters with power restore notified
from a larger percentage of meters.
Remote Service Checking
(Function 22)
Performance level clarifies that this function does not need to be
“real-time”.
Meter Settings Reconfiguration
(Function 25)
No change
Software upgrades (Function 26)
Wording enhanced to ensure solution continues to operate normally
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Smart Meter Functional Specification Briefing Paper
Smart Meter Minimum Functional
Requirement
Victorian AMI Specification
during and after software upgrade.
Plug and Play Device
commissioning (Function 29)
No change
Communications and Data Security
(Function 5)
Clarification that responsible person must undertake a risk
assessment
Tamper Detection (Function 6)
No change (however would be considered under the risk
assessment performed as part of Function 5)
Meter Communications: Issuing
Messages and Commands
Technology neutral approach removing reference to “broadcast”.
Simplification removing the number of groupings supported.
File Name: NSMP BRWG Briefing Paper v0.2.doc
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Smart Meter Functional Specification Briefing Paper
Appendix D List of Related Technical Papers
1. Current Transformers and Meter Resolution (version 0.1)
2. Power factor measurement (version 0.4)
3. Import/Export Metering (version 0.3)
4. Function 8/14 Dedicated Load Control (version 0.1)
5. Supply Capacity Limiting (Version 0.1)
6. Home Area Network Research Study (version 0.6)
7. UK Retailers HAN Research Study Gap Analysis (version 0.1)
8. SRSM and Beyond Local Communications Development (version 1.0 – 9 December 2008)
9. HAN Service Standards Access Guidelines (version 0.2)
10. In Home Display Guidelines (version 0.2)
11. Voltage Measurement (version 0.1)
12. Communications and Data Security (version 0.2)
13. Customer Supply Monitoring (version 0.5)
14. Use of the HAN to support Function 24 (version 0.5)
15. Function 23 Interoperability for Meters/Devices at the Application Layer and Function 24 Hardware
Component Interoperability (version 0.2)
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