1 Smart Distribution Systems: Communications Perspective S. S. (Mani) Venkata Alstom Grid and University of Washington (UW) [email protected]venkata @ee.washington.edu 2011 SECON Workshop Panel Presentation Salt Lake City, UT June 27, 2011 Co-author: Sumit Roy, UW
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1 Smart Distribution Systems: Communications Perspective S. S. (Mani) Venkata Alstom Grid and University of Washington (UW) [email protected][email protected].
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Smart Distribution Systems: Communications Perspective
S. S. (Mani) VenkataAlstom Grid and University of Washington (UW)
2011 SECON Workshop Panel PresentationSalt Lake City, UT
June 27, 2011Co-author: Sumit Roy, UW
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Simple concept Robust; Effective Not much changed in
the last century
Complex in execution Thousands of
classical, central power plants
Web of transmission lines (above 120-kV)
More complex web of distribution lines
(below 69-kV)
“Edison’s Grid” Today
Generating Plant
End User
Transmission Line
Substation
Distribution System
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Smart Grid: A Digital, Information-Age Grid
Basic structure – Today’s (Edison’s) grid is the starting point– Applies information technology – Much more information and control
Power of Timely information– Deregulation– Infusion of new technologies– More precise system design and operation– Improved reliability, efficiency, safety, security and
cost – Ability to meet customer needs– More products and services– Reduced emissions and environmental impact
Optimal Performance Measures for Smart Grid Development
Customer Satisfaction Efficiency Reliability Voltage and frequency regulation Power Quality Economy Environment and ecology Regulatory Security (system and cyber) Safety
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Smart Grid Components
Generating Plant
End User
Transmission Line
Substation
Distribution System
Broadband over Power lines
—Provide for two-way communications
Monitors and smart relays at substations
Monitors at transformers, circuit breakers and reclosers
Bi-directional meters with two-way communication
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Incorporates entire energy pathway, from generation to customer High-speed, near real-time, two-way communications Sensors, solid-state controllers, switches, protective devices,
transformers, enabling rapid diagnosis and corrections Distributed Energy Resources (DER)
Distributed Generation Energy Storage Demand Response Plug-in Electric Vehicles
An Integrated Energy SystemAn Integrated Energy System
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Demand Management• Better demand control = reduced
generation reserve requirement• Control demand to match supply• Pricing based on real-time market
Renewables Management• Shape load to generation
• Manage intermittency• Maximize renewables
• Supply-based pricing
Asset Management• Improve field efficiency• Real-time asset status & control• Expanded reliability• Extended asset life
Customer-Enabled Management• Automatic control of electronic
devices• Real-time pricing • New services and products• Enable customer choice
Smart Grid BenefitsSmart Grid Benefits
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Smart Grid: Architectural View
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Smart Grid Comm. Standards Domains
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T&D Wide-Area Networks
Many of these are considered obsolete or aging in the general IT world
Still in common use in the power system
Name Notes
Frame Relay Packet-switched, no reliability guarantee