southern california edison’s ami systems design
DESCRIPTION
Southern California Edison’s AMI Systems Design. “Technology Advisory Board”. System Design Goals. Develop requirements that anticipate customer needs and support policy objectives through 2012 - PowerPoint PPT PresentationTRANSCRIPT
August, 2006
Advanced Metering
Infrastructure
Southern California Edison’sAMI Systems Design
“Technology Advisory Board”
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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 Technologies2nd Generation vs. 3rd Generation difference in adoption of architecture based design
Solid State Gen2
Smart Meters Gen3
Per
form
ance
(F
un
ctio
nal
& V
alu
e)
Time2006 2008
SCE Technology Adoption Zone
2000 2010
$110
$65
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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
AMR
AMI
Broadband Application for Advanced Metering
BPL v3Muni WiFi
RF Canopy
WiMax
Per
form
ance
(Ba
nd
wid
th,
Co
ve
rag
e &
Va
lue
)
Time
Pervasive Customer Broadband Access
2006 2008
SCE Technology Adoption Zone
2000 2010
BPL v2
BPL v1
PLC v2
RF Mesh
ERT
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Developing SCE’s AMI architecture
• 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
• 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
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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Conceptual Architecture Development Approach
Conceptual Architecture
• Develop requirements•Functional•Non-functional
• Understand Vendor Capabilities•Develop a platform-independent 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
This process was used to:
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AMI Conceptual Component Diagram
Edge Data Center
Field Elements
Customer Premise
Data Center Aggregator System Management Console Meter Data Management System
Repeater Distribution Automation Nodes Neighborhood Aggregators
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
• 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 componentThis layer provides a common
framework to understand scoping boundaries and vendor offerings
2nd Level: Programmable elementsThis 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 layerThis layer is Including an event bus architecture and
shared resources which provides additionalflexibility and extensibility for the future
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AMI overall systems strategies
• 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
• System is designed to securely support customer energy choices - TOU/CPP rates - 2008 T24 PCT - Solar metering - Service automation - Plug-In Hybrids - 2011 T24 Ballasts- RTP rates - Smart appliances - Home automation- Cyber security
• System’s open and flexible design is based on industry reference design principles (DOE’s Gridwise Architecture, EPRI’s Intelligrid, OpenAMI and UtilityAMI)
• “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.
• Next generation meter products compatible with our requirements are becoming available for acceptance tests next month (Aug 2006)
One year has brought the future into our reach
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
ProgrammableConfigurable Layer
provides capacity forremote deployment
of additional capabilities to adapt
to changing customerneeds and market
conditions
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AMI Conceptual Component Descriptions
3rd Level ComponentIncluding a
bus architecture and shared resources
provides additionalflexibility and extensibility.
This platform independent
Architecture is similar to several vendor
solutionsunder consideration
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Security Framework – Objectives
• GUIDANCE and INSTRUCTION with regard to security system design and architecture
– Adaptive and extensible– Serve as a compass for current and future efforts– Clearly delineate priorities and objectives
• Mechanism for SPECIFICATION, IMPLEMENTATION, and INTEGRATION of AMI security systems into SCE’s security program and structure
– 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
– Support “steady-state” operation as well as change and variation along two axes:• Definition and scope of the AMI• Definition and scope of the security framework itself
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Security Framework – Strategy & Tactics
STRATEGYRisk Management
Asset Identification
Threat Identification
Vulnerability Assessment
Risk AnalysisRisk Treatment
Cost / Benefit Analysis
SecurityDomains
PolicyProtection
Profiles
TACTICSIntelliGrid
Process,Common
Criteria
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Security Framework – Deliverables
o GUIDANCE and INSTRUCTION with regard to security system design and architecture
o Mechanism for SPECIFICATION, IMPLEMENTATION, and INTEGRATION of AMI security systems into SCE’s security program and structure
o Mechanism for continued MONITORING, MAINTENANCE, EVOLUTION, and EXTENSION
Milestoneso Security Domains
o Identification
o Definition
o Risk Assessmento Asset Identification
o Threat Identification
o Vulnerability Analysis
o Security Policyo Guidance, Objectives
o Assets, Actions, & Auditing
o Specificationo Security Functionality
o Protection Profiles
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Questions?