Advanced
Metering
Infrastructure
Southern California Edison’s
AMI Systems Design
“Technology Advisory Board”
August, 2006
System Design Goals
 Develop requirements that anticipate customer needs and support
policy objectives through 2012
 Develop an architecture framework leveraging leading industry
methodologies and principles that support SCE’s AMI solution as a
strategic platform to enhance customer service and grid reliability
 Use a systems engineering approach to conduct trade-off analysis
focused on the value of enabling scenarios in the AMI business case
 Select designs and
technologies that mitigate the
risk of rapid technology and
functional obsolescence
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Future-proofing SCE’s AMI Solution
• Given the varied pace of technology advancement in the
meter and communications industry the risk of technology
obsolesce to AMI is high
• In order to manage this risk the AMI program focused on
the following:
– Understanding the market and vendor solutions & technologies
– Developing the layered architecture necessary to meet our
requirements, assess vendor offerings and understand any gaps
– Developing strategies and technical points of view with an
emphasis on future-proofing SCE’s AMI solution against the risk of
rapid technical obsolesce
– Communicate with the industry to help increase the pace of
innovation and ensure basic architecture elements necessary for
future-proofing are available for SCE’s implementation
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Understanding Electric Residential Meter Technologies
2nd Generation vs. 3rd Generation difference in adoption of architecture based design
Performance (Functional & Value)
SCE Technology Adoption Zone
Smart Meters Gen3
$65
$110
2000
Solid State Gen2
2006
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2008
2010
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Understanding Electric Meter Communication Technologies
Technology choices based on solving majority solution with an effective engineering economic
alternative while recognizing the rapid rate of communications alternatives
Performance (Bandwidth, Coverage & Value)
SCE Technology Adoption Zone
Pervasive Customer
Broadband Access
AMI
BPL v3
Muni WiFi
WiMax
RF Mesh
PLC v2
BPL v2
Broadband Application
for Advanced Metering
RF Canopy
BPL v1
ERT
2000
AMR
2006
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Time
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Developing SCE’s AMI architecture
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SCE’s Systems Engineering
approach provides a method for
decomposing complex systems
into manageable elements using
“Systems Thinking” approach
AMI is a System of Systems
– A collection of independent systems
organized to perform collaboratively to
achieve a purpose not achievable by
the individual systems
•
Systems Levels are iteratively
described in increasing levels of
detail as the AMI architecture
progresses to lower levels of
abstraction
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AMI requirements-driven architecture perspectives
Development of conceptual, component & reference architectures has allowed us to examine AMI
from a number of architecture perspectives (Operational, System, Technical)
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Use Cases & Business
Scenarios
Requirements
Information Needs
Technical capabilities required
to support uses of AMI
Component Architectures
Message Architecture
Reference Architecture
Open standards available to
support architecture
Vendor solutions and offerings
Enabling enterprise standards,
patterns & services
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Conceptual Architecture Development Approach
This process was used to:
• Develop requirements
Conceptual Architecture
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•Functional
•Non-functional
• Understand Vendor
Capabilities
•Develop a platformindependent component
architecture
•Understand candidate
standards
•Understand the message
architecture necessary to
support the requirements
•Map requirements to
enabling components
•Understand gaps between
vendor offerings &
architecture needed to
support the requirements
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AMI Conceptual Component Diagram
Edge Data Center
 Data Center Aggregator
 System Management Console
 Meter Data Management System
Field Elements
 Repeater
 Distribution Automation Nodes
 Neighborhood Aggregators
Customer Premise
 Premise Gateway
 AMI Meter
 Other Meters
 Load Control Devices
 In-home display
 Building Management System
 Programmable Communicating
Thermostat (PCT)
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Electric Meter Communication Strategy
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Technology choices need to balance standards, performance and cycle time
Reach for greater relative bandwidth (still in narrow range) for 2-way comms
Mitigate exposure to fast cycle technologies touching large number of
elements
Reliability and Security are significant issues
Commercial risk mitigation
Layered the network architecture to take advantage of the constantly evolving
communications landscape
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AMI Meter & Device Strategies
1st Level: High level component
This layer provides a common
framework to understand scoping
boundaries and vendor offerings
2nd Level: Programmable elements
This layer includes a programmable layer that provides
capacity for remote deployment of additional capabilities to
adapt to changing customer needs and market conditions
3rd Level: “Logical” device layer
This layer is Including an event bus architecture and
shared resources which provides additional
flexibility and extensibility for the future
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AMI overall systems strategies
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Use the AMI Home Area Network (HAN) controller in the meter to
stimulate a robust eco-system of energy management products that
provide customers with new tools to manage their electricity usage and
allow SCE to develop new programs
Fast cycle technologies run the highest risk of obsolesce so we shall
be careful on how they are incorporated into the AMI solution
architecture
Design for a time when ubiquitous broadband exists across SCE’s
service territory and understand how to leverage the technology for
AMI
Look for opportunities to extend AMI functionality with applications that
are aware of the entire network bus model including AMI elements in
the future. (outage management, distribution and procurement
optimizations, adaptive self-healing, etc.)
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SCE AMI Technology Strategy Progress
One year has brought the future into our reach
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System is designed to securely support customer energy choices
- TOU/CPP rates
- Service automation
- RTP rates
- Cyber security
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- 2008 T24 PCT
- Plug-In Hybrids
- Smart appliances
- Solar metering
- 2011 T24 Ballasts
- Home automation
System’s open and flexible design is based on industry reference design principles
(DOE’s Gridwise Architecture, EPRI’s Intelligrid, OpenAMI and UtilityAMI)
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“Clean sheet” requirements developed over the past 8 months have been vetted against
vendor product development plans and cost-benefit trade-off. Functional requirements
for meter, telecom and Meter Data Management System have been published.
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Next generation meter products compatible with
our requirements are becoming available for
acceptance tests next month (Aug 2006)
SCE AMI Phase I selected as “2005-2006 Best
AMR Initiative in a North American IOU” by
international utility peers. UPN-AMRA, Aug 9, 2006
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AMI Conceptual Component Layers
2nd Level:
Future
Programmable
Configurable Layer
provides capacity for
remote deployment
of additional
capabilities to adapt
to changing customer
needs and market
conditions
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AMI Conceptual Component Descriptions
3rd Level Component
Including a
bus architecture
and shared resources
provides additional
flexibility and
extensibility.
This platform
independent
Architecture is similar
to several vendor
solutions
under consideration
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Security Framework – Objectives
• GUIDANCE and INSTRUCTION with regard to security system
design and architecture
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Mechanism for SPECIFICATION, IMPLEMENTATION, and
INTEGRATION of AMI security systems into SCE’s security
program and structure
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Adaptive and extensible
Serve as a compass for current and future efforts
Clearly delineate priorities and objectives
Aligned to interface with corporate policy, procedure, and practices
Reference and re-use existing components wherever possible and practical
Only extend SCE’s existing program for requirements specific to the AMI
Mechanism for continued MONITORING, MAINTENANCE,
EVOLUTION, and EXTENSION
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Support “steady-state” operation as well as change and variation along two axes:
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Definition and scope of the AMI
Definition and scope of the security framework itself
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Security Framework – Strategy & Tactics
STRATEGY
Risk Management
Risk Treatment
Risk Analysis
Cost / Benefit Analysis
Vulnerability Assessment
Threat Identification
Policy
Protection
Profiles
Asset Identification
TACTICS
IntelliGrid
Process,
Common
Criteria
Security
Domains
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Security Framework – Deliverables
Milestones
o Security Domains
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Identification
Definition
o Risk Assessment
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GUIDANCE and INSTRUCTION with
regard to security system design and
architecture
Asset Identification
Threat Identification
Vulnerability Analysis
o Security Policy
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Mechanism for SPECIFICATION,
IMPLEMENTATION, and INTEGRATION
of AMI security systems into SCE’s
security program and structure
Guidance, Objectives
Assets, Actions, & Auditing
o Specification
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Security Functionality
Protection Profiles
Mechanism for continued MONITORING,
MAINTENANCE, EVOLUTION, and
EXTENSION
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Questions?
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