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Agenda
- 1. Introduction & Motivation
- 2. Multicast-Enabled Home Gateways
- 3. Deployment Considerations
- 4. Evaluation
- 5. Conclusion
Consumer-Oriented Integration of Smart Homes and Smart Grids A Case - - PowerPoint PPT Presentation
Consumer-Oriented Integration of Smart Homes and Smart Grids A Case - - PowerPoint PPT Presentation
Consumer-Oriented Integration of Smart Homes and Smart Grids A Case for Multicast-Enabled Home Gateways? Sebastian Meiling, Till Steinbach, Moritz Duge and Thomas C. Schmidt moritz.duge@haw-hamburg.de iNET RG, HAW Hamburg
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Introduction & Motivation
Smart Grid
measurement and control of energy consumption
- Smart Meters at customer sites,
Advanced Metering Infrastructure (AMI)
- load management by intelligent energy consumers
lowering the base load capacity and avoiding peak load
- requires control of many energy devices (consumers
and generators)
- load balancing by Demand Side Management (DSM)
decentralized energy production
- instead of a few big power plants, many small generators
- operation of Virtual Power Plants (VPP)
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Smart Home and Smart Grid
Smart Home & automation
- control various (energy) appliances
in households
- increase comfort and reduce expenses
- already some deployment
Smart Grid ↔ Smart Home
- comparable motivations
- large scale ↔ small scale
- possible synergies
Yet, there is no interconnection or integration! Introduction & Motivation
Smart Home Control
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Problem Statement
- integration of Smart Homes requires communication-
access to households
- dedicated communication infrastructure is expensive
- no scalable public-network infrastructure for a Smart
Grid integrating Smart Homes available
Introduction & Motivation
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Communication Patterns in a Smart Grid
- ne-to-many (1:N)
- device scheduling
- energy tariff information
- AMI, DSM and VPP
many-to-many (M:N)
- cooperative execution of a task
- decentralized coordination
- DSM and VPP
- that is group communication
- not efficient trough unicast but multicast
Multicast-Enabled Home Gateways
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Contribution of this Work
- ur concept
- based on consumer hardware (COTS)
- integration of Smart Home devices
- use of existing public networks, i.e. the Internet
- (hybrid) multicast-enabled home gateways
– overcome limited IP multicast deployment
we show
- feasibility and performance measurements
- testbed in the area of Hamburg
- evaluation of consumer internet connections
Multicast-Enabled Home Gateways
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Smart Grid using Home Gateways
Multicast-Enabled Home Gateways
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Deployment Considerations
Hybrid Multicast
- overcomes lack of IP multicast deployment
- application layer multicast using p2p technologies
- native multicast where available
H Mcast hybrid adaptive multicast framework ∀
- common multicast API with abstract group naming
scheme
- adaptive middleware layer for technology abstraction
- Inter-Domain Multicast Gateways (IMGs)
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Deployment Considerations
Hybrid Multicast
P2P overlay multicast enabled networks
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Evaluation
Evaluation Scenario
- system performance of home gateways
- measurement study of consumer Internet connections
- home gateway
– standard consumer WLAN router – MIPS processor (400 MHz) – 32MB RAM – OpenWRT Linux operating system
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Evaluation
System Performance
test setup
- two home gateways (sender and receiver)
- direct connection via 100 MBit/s Ethernet
- metrics: packet throughput and loss, CPU utilization
- constraints of hardware resources
technologies under test
- native IP multicast (Native IPM) as reference
- H Mcast IP multicast (IPM)
∀
- H Mcast application layer multicast via Scribe (ALM)
∀
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Evaluation
System Performance
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Evaluation
System Performance
CPU performance is a limit to throughput
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Evaluation
Hamburg testbed
test setup
- 30 nodes
- 9 Internet service
providers (ISPs)
- metropolitan area of
Hamburg, Germany metric under test
- one-way message delays
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Evaluation
Distributed Measurement
HAW
horizontal bars median thick bars 25% - 75% thin bars last value within: thick bar + 1.5 × thick bar
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Conclusion
Conclusion
- results show high packet throughput on COTS
- end-to-end delays over ISP connections
– surprisingly high for the regionally confined
scenario
– heavily depend on provider association – differ considerably between ISPs
- standard consumer embedded hardware more than
sufficient for Smart Grid applications (AMI, DSM, and VPP)
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Conclusion
Outlook
- ur ongoing research
- measurements and experiments in our Hamburg
testbed
- analyze impacts of consumer Internet connectivity on
(future) Smart Grid applications
- develop decentralized coordination schemes for
energy devices
- other considerations
– privacy, security, integrity – interfaces, other technologies (IEC 61850)
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Questions? Thank you!
http://www.haw-hamburg.de/inet
http://www.smartpowerhamburg.de
SMART POWER HAMBURG