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Effective and Practical AMI Mesh Radio Deployment – Lessons Learnt
Michael MacfarlaneManager Strategy & Technology
Metering Asia 9th May 2012
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JEN Distribution Area
Jemena Electricity Distribution Network
• Covers 950km2 in the central west to northwest area of greater Melbourne including Tullamarine International Airport
• 10,285km of electricity distribution lines
• 320,000 end users• One of two Victorian electricity
distribution networks managed by Jemena
• Assets include:•23 Zone Substations•5,150 Distribution Substations•103,000 Poles•1,684 km's of HV-OH Lines•495 km's HV-UG Cable•64,000 Public Lights
JEN – Key Statistics
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United Energy Distribution
• Covers 1450km2 Services south east Melbourne and the Mornington Peninsula
• 12,530km of electricity distribution lines
• 680,000 end users• One of two Victorian electricity
distribution networks managed by Jemena
• Assets include:•45 Zone Substations•11,000 Distribution Substations•204,000 Poles•4,400 km's of HV-OH Lines•850 km's HV-UG Cable•117,715 Public Lights
UED – Key Statistics
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AMI Functionality (Victorian Mandate)
Existing Meter:� Register Reads
� Basic Load Control
AMI Meter:� Interval Data
� Integrated Home Area Network (HAN)
� Remote Reads
� Remote Energise/Re-energise
� Remote Load Control
� Supply Capacity Control
� Service Levels
� Outage detection
� Quality of Supply
� Direct Load Control
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AMI Technology
AMI System Complies with DPI Functional Spec
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AMI LAN Design• Access Point 900Mhz ISM • 3500 meters per Access Point• ~5 Relays per Access Point to
increase coverage area• Battery Backed• Telstra 3G Mobile data backhaul
AMI Relay
AMI Access Point
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Initial Rollout Approach
• Begin in high density areas first, then move to rural -communications ahead of meters
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A Traditional AMI Deployment
• Takes 4 Years to reach all areas
• Incremental rollout of LAN infrastructure ahead of Meters
• Focuses on high density (quick) regions first
• Only allows AMI meters to be deployed in AMI areas(as AMI remotely read)
• Highly efficient for AMI installers
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An Alternative Rollout Approach
• In January 2011, UED & JEN accelerated their AMI communications rollout
– to cover 95% of the meter population by June 2011
– to allow meter installed within that area has a better than 95% chance of communicating
– so metering adds, alts and faults can use AMI meters.(as remote AMI)
– and business as usual can transition from legacy processes earlier
– Halt purchasing traditional Meters (thousands per month)
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Accelerated Communications Pilot
• Thin mesh concept verified but below success criteria (<95%)
• Density of external antennas installed was too low
• Grid scale reduced to 130 linear meters for actual rollout
• Accelerated LAN thin mesh concept
• 1 Access Point, 5 Relays& 620 AMI meters
• Installed in a thin Mesh grid 180 linear meters in a grid pattern to emulate the
Packet Success Threshold: 1%Packet Success Threshold: 80%Packet Success Threshold: 90%Packet Success Threshold: 95%
Strategic LAN Infrastructure
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Thin Mesh Meter Deployment
5% of Population
Route Planning,3 Candidates per Grid Cell
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Thin Mesh Forming
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UE Total Meters InstalledMonth
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AMI Coverage
or
Population Density
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• Quality of installation information is important when analysing network performance. e.g. location, meter enclosure type and antenna installed
• All strategic Access Points and Relays are in service
• Deploying 5% of the meters in this way is providing coverage to 90% of customers with better than 95% success rate
Thin Mesh Progress
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Westfield Doncaster Shopping Town Embedded Network
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Indoor RF Propagation
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Concrete and Steel ~ Faraday Cage
• 14 Meter Rooms
• 159 Tier 2 AMI meters
• 100% Reliable AMI Comm’s Required
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Indoor AMI RF Penetration
RF PROPAGATION at 915MHz
200m to 1000s of m in free space
130m in urban areas
30-80mindoors
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The Challenge• The shopping centre environment of distributed meter
rooms, concrete, glass, concrete, multiple levels and more concrete is not conducive to the transmission of RF
• The vendor did not have a predefined communications design for this type of environment
• The shopping centre did not want any of the LAN communications equipment to be visible in the public areas
• The Embedded Network Tier 2 meter count was likely to diminish as more customers switch to the embedded service provider
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Field Survey – Desktop Analysis
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159 Meters Installed in the Doncaster Labyrinth
External AMI Antenna
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Practical Relay Test Locations
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Relay onRoof
Relay onRoof
Relay in Loading Dock
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Post install of 3 relays• 159 Meters became 97 Meters, 3 Meters needed a remote antenna
installation
• Finding power and suitable areas way from the pubic was difficult but achievable.
• Shopping centre management provided unrestricted access to the entire complex in order to get the most suitable locations for our communications equipment
• Technical success, the embedded network is now working, designed and installed with in house ability and knowledge.
• We all got some good exercise as walking around the shopping centre we did about 7kms each time we visited, there was also decent coffee!
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Questions
Michael Macfarlanemichael.macfarlane@jemena.com.au
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