Advanced Metering Infrastructure Water and Energy Efficiency · • Advanced Metering...
Transcript of Advanced Metering Infrastructure Water and Energy Efficiency · • Advanced Metering...
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Baywork Training Buffet November 14, 2018
Advanced Metering InfrastructureWater and Energy Efficiency
Advanced Metering InfrastructureWater and Energy Efficiency
David Wallenstein, P.E.,
EBMUD Operations and Maintenance Group
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What are we going to talk about?
• A little background on meters and AMI
• AMR/AMI history at EBMUD
• The Blackhawk Project
• The Water/Energy Projects
• Our current deployment
• Business case going forward
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Automated Meter Reading (AMR) Benefits and Savings
• Labor savings
• Monthly reads
• Billing accuracy
• Reduced estimated reads
• Hard to read meters
• Ability to datalog
• Leak flags
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Definition adapted from Wikipedia
• Advanced Metering Infrastructure (AMI) are systems
that measure, collect and analyze water usage, and
communicate with metering devices such as water
meters, electric meters, pressure sensors and other
instrumentation either on request or on a schedule.
These systems include hardware, software,
communications, consumer water displays and
controllers, customer associated systems, Meter Data
Management (MDM) software, and supplier business
systems.
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Notable Recent Deployments
City Total Status Vendor Web InterfaceSan Francisco 178k 100% Aclara Yes
Eastern MWD 153k 82% Sensus Planned
Sacramento 140k 79% Badger Yes
Fresno 133k 100% Badger Yes
Hayward 35k 100% Aclara No
DSRSD 23k 100% Sensus Yes
Pleasanton 22k 100% Aclara Yes
New York 830k 95% Aclara Yes
Houston 1,007k 95% Aclara/Badger/Itron Planned
Albuquerque, NM 200k 50% Sensus Planned
Minneapolis 100k 0% Aclara Planned
Memphis, TN 255k 71% Honeywell/Elster Yes
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Evolution of Meter Reading
• Straight read
• Touch read
• Telephone based systems for commercial customers
• Walk by or handheld technology
• Mobile bubble up one way
• Mobile bubble up with datalogging
• Two way mobile system
• One way fixed network
• Mesh network two way
• Two way fixed network6
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Building an AMI Network
Collectors Main Computers End Uses
METERS
SCADA
Sensus Collectors
NETWORKSERVER
CLIENT WORKSTATIONS
CIS, WMS, OP Data
DEVICES
CUSTOMER PORTAL
Meter Interface Units
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Types of Fixed Data Collection
• Star Network-Line of Sight– Long or short range
• Mesh Network– Full mesh or partial mesh
• IoT-Lora, Wisun
• Cellular
• Licensed or Unlicensed
• Hybrid
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MIU COL
MIU
MIU
MIUMIU
COL
COL
COL
ControlComputerReceiver
MIU
MIU
MIU MIU
MIU
MIU
MIUMIU
MIUMIU
MIU
MIU
“Modified” or “Partial” Mesh Network
“Full”MeshNetwork
What is Mesh Network?
Source: Don Schlenger, SAICMIU Meter Interface Unit
Radio Receiver/CollectorCOL 9
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What is the “A” in AMI?
• 2-way fixed communication
• The ability to connect to other devices besides meters
• High power high bandwidth backhaul
• Web interface that customers can access granular data
• The potential ability to operate SCADA
• A sophisticated database that can mine information
• Expandability and adaptability
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Foundation of A“M”I is Meters
• Types of meters and registers
• Meter accuracy and resolution
• Frequency of output
• Meter data
• Meter sizing
• New information1111
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Types of Meters
METER TYPE FEATURES
Nutating disc Volumetric/Positive Displacement
Most Common. Wide range of flows but have higher head loss.
Oscillating Piston
Single and Multi Jet Inferential/Velocity
Low End flows accuracy, can handle sand with lower head
loss. Pulse flow issues.
Turbine Generally higher flows with less headloss.
Fluid Oscillating
Static No moving part meters with AMI compatible registers
Magnetic
Acoustic
Compound Mixed Two meters in one for low and high flow accuracy 12
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Nutating Disc-Most Common in U.S.
Source: OMEGA Complete Flow and Level Measurement Handbook and Encyclopedia®, OMEGA Press, 1995.
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Nutating Disc-Most Common in U.S.
Source: Neptune Meter.
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Oscillating Piston
Sources: • OMEGA Complete Flow and Level Measurement
Handbook and Encyclopedia®, OMEGA Press, 1995. • Red Seal Measurement
• Most common meter in UK
• Also common in U.S
• Sizes ½ to 3 inches.15
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Turbine Meter
Source: Metron Farnier
• Larger flows
• Lower head Loss
• Limited low end accuracy
• Part of compound meters
• Sizes 1.5-20 inches
• Axial flow
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Single Jet Meter
Source: Metron Farnier
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Multi Jet Meter
Source: Master Meter 18
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Magnetic Meter
Source: Sensus
Sealed Electronic Register
Flowtube
Magnetic Flow Sensors
Strainer
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EMF Theory: In Motion
magneticfield
waterflow
force
force
+-
Emf = BLv
v
L
Source: Sensus 20
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Acoustic Meter
Source: Badger Meter 21
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Four Main Types of Meter Registers
1. Manual Read
2. Pulse
3. Encoded
4. Solid State
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Considerations of Meter Accuracy
• AWWA standards down to 1/4 gpm
• Many NEW 5/8 meters can beat that
• Meters decay at the low end first
• Older meters often not accurate at low flows
• What Percent of water is low flow?
• Early studies suggest at least 5% less than ¼ gpm-mostly leaks.
• AMI can help with Meter Sizing
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Slow Meter Decay=Lost Revenue
Average Meter Registration Before/After Changeout Based on 13,584 Stuck Meters
0%
20%
40%
60%
80%
100%
120%
-12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12
Months Before or After Change
Perc
enta
ge o
f Ave
rage
U
sage
Met
ered
Increase Metered Consumption
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Dave’s Top 10 Types of Low Flows that might go Unmeasured
1. Houseline Leaks
2. Irrigation Valve Stuck
Open
3. RO Systems
4. Automatic Pool Fill
Valves
5. Hot Water Tanks
Pressure Relief Valve
6. Faucet drips
7. Refrigerator Water
Supply Line
8. Broken Appliances
9. Water Treatment
Systems
10. Whatchamacallit!!
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What does a small leak look like?
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¼ GPM
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1/8 GPM
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1/16th GPM
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1/32 GPM
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1/37 gpm (lower end of ability to
measure)
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1/150 gpm is still 10 gallons per day
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How much does an undetected leak really amount to?
Flow gpm CF/Hr GPD CCF/mo $/mo*
1/32 0.25 45 1.83 $8.801/16 0.5 90 3.66 $17.60
1/8 1.0 180 7.31 $35.2¼ 2.0 360 14.6 $70.4½ 4.0 720 29.3 $140.81 8.0 1,440 58.6 $280.7
•Assume water cost about $4.81/unit or $6.43 per thousand gallon 33
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Unmeasured Flow Study
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Unmeasured Flow Study
• Replaced approximately 431 meters with Sensus Iperl Mag Meters and Metron M2 radios
• Over 200 pulled meters tested at discrete flows 1/32, 1/16, 1/8, ¼ gpm and up to 20 gpm
• Iperl Meters start registering at 1/37 gpm
• Meter resolution is 0.001 CF =1 ounce of water
• Datalogging at 1 minute intervals
• Two 11-day downloads per season
• 55 million meter reads!
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Residential Low Flow Rate Changes by Season
0.00%
5.00%
10.00%
15.00%
20.00%
25.00%
Early summer
Late spring
Early spring
Mid winter
Early winter
Late fall
Early Fall
1/4 gpm
Flow rate less than GPM0 gpm 1 gpm
Perc
en
t o
f Flo
w
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General Observations
• 1/3 of all minutes had consumption
• Larger meters less accurate at low flows
• Unmeasured flow by method 4-7%, by pre and post comparison 8%
• Surprisingly some older meters better than newer ones
• Some very high flows
• Leaks were at very low flows
• AMI can help with meter sizing37
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Considerations of Meter Accuracy
•Meters decay at the low end first
• Larger meters less low-flow accuracy
• Surprisingly some older meters better than newer ones.
0%
20%
40%
60%
80%
100%
120%
1.1760913 0.69897 0.30103 0 -0.30103 -0.60206 -0.915209 -1.221283 -1.521475
Log flow
Acc
urac
y
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1/4 gpm15gpm
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Example Accuracy Calculations
Range Midpt Log Midpnt
Accuracy
% of flow
% Measured
1/32-1/24 1/28 -1.447 20% 0.3 0.06
1/24-1/22 1/23 -1.362 29% 0.4 0.116
1/22-1/20 1/21 -1.322 34% 0 0
1/20-1/18 1/19 -1.279 38% 0.4 0.152
1/18-1/16 1/17 -1.23 44% 0.3 0.132
1/16-1/14 1/15 -1.176 48% 0.2 0.096
Measured = sum[(%of flow)X(accuracy of flow)]
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General Observations
• 1/3 of all minutes had consumption
• Larger meters less accurate at low flows
• Unmeasured flow by method 4-7%, by pre and post comparison 8%
• Surprisingly some older meters better than newer ones
• Some very high flows
• Leaks were at very low flows
• AMI can help with meter sizing40
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Synergies with Water & Energy
• Energy to pump and treat water & wastewater
• Saving water encourages energy saving
• Hot water leaks are energy wasters
• Efficient devices
• Promote on line data.
• Intertie with HANs41
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Seasonal Use by Customer Category
950
760
570
380
190
Average Daily Consumption (MLD)
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AMI can lead to energy savings
0
5000
10000
15000
20000
25000
2007 2008 2009 2010 2011 2012
Energy Con
sumption (M
Wh)
Year
Raw Water Pumping
Water Treatment
Distribution
Wastewater Collection
Wastewater Treatment
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Water-Energy Studies
$6.4 M Project
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Behavioral Water& Energy Conservation
Randomized control trial
• ”Gold standard” of evaluation
• Isolation of impact
• Treatment and control groups
• Water, electricity and gas data
• Can PG&E Fund AMIwater Conservation?
• What about pumpingand treatment?
Water & Ene
rgy Use
Time
Control GroupTreatment Group
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PG&E & UC Davis Study
• CPUC mandated study. Electricity/gas/water together
• Redundancy in AMI network coverage
• Targeted for residential customers (randomly selected)
• 5,000 water AMI with web portal (treatment)
• 5,000 water AMI with no web portal (control 1)
• 5,000 customers with no water AMI (control 2)
• UC Davis to evaluate:• Water saved from AMI
• Gas and Electricity saved as a result
• Statistical significance
Research & Development
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USBR Water and Energy Study
• 3,000 meters from 5/8- to 8-inch
• Primarily retrofitted existing meters
• Consumption ranges from 1k-500k gpd. Avg. 6k
• Wide variety of customer types and uses
• Learn more about embedded energy uses.
• PG&E not a direct partner but will benefit
• Only 1 collector communication required
• No control group needed for this one.
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Research & Development
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RFP Requirements
• Phase 1 (20k meters)• Phase 2 (full)• Mobile and fixed hybrid• 2-way communication• Hourly meter reads• Compatibility with all meters• Upgradeable• Performance guarantees
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Typical Agreement Phase I AMI Agreement
The Vendor Contract
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Key Milestones
• Received grants Jun 2016• Released RFP Sep 2016• Awarded Phase 1 contract Dec. 2017• MIU Installations June 2017-Dec
2018• Collector Installations Oct. 2018• Go Live Anticipated Jan. 2019
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Collector Network Phase 1
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Radio Wave Propagation
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Sensus Coverage Area (1-Min.)
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USBR and PGE Meters
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Collector Antennae on NAB Roof
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Collector in NAB Radio Room
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San Pablo WTP
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Gwin Reservoir
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Nicholl Knob Reservoir
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Meter and MIU Installation
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Meter and MIU Installation
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Meter and MIU Installation
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Meter and MIU Installation
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Integration with Sensus
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WaterSmart Software (WSS)
CUSTOMER1. HOME WATER REPORTS / ALERTS & 2. WATERSMART CUSTOMER PORTAL & WEB APP
UTILITY3. DASHBOARD &PROGRAM OUTCOMES
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Consumption: 1 Year
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Consumption: 2 Months
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Consumption: 2 Weeks
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Consumption: Day
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Customer Web Portal (WaterSmart Software)
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Evaluating AMI Business Case
• Water conservation
• Water loss control
• Demand forecasting
• Facility sizing
• Climate change considerations
• Predictive Maint.
• System water quality improvements
• SCADA Integration
• Energy management
• Customer service
• System reliability
• Security
• Revenue loss recovery
• Asset management
• Meter management and replacement
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AMI Business Case Will Include Many Departments in a Utility
• Metering and Billing
• Water Conservation
• Customer Services
• Engineering
• Operations
• Regulatory
• Planning
• Finance
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Stakeholders We Have Met With
Operations and Maintenance
• Meter Division• Construction• Facilities• Distribution• Water Quality• Regulatory and Security• Supply
Engineering
• Water Distribution Planning• Mapping
Water and Natural Resources
• Planning• Water Supply Improvements• Recycled Water• Environmental Affairs
Customer and Community Services
• Water Conservation• Contact Center• Field Services• New Business• CIS Control
Finance
• Purchasing• Risk Management• Auditing• ISD
Wastewater
• Engineering• Planning• Waste Water control• Environmental Services 73
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Strategic Issues Discussed
Issue How AMI Helps Who Affected
Customer awareness of water use
• Web access • Hourly data • Leak and high bill notification• On line calculators
• Conservation• Contact Center• Public outreach• Customer Service• Customers
More granular demand data needed
• More accurate/timely reads• Improved data management (MDMS)
• Operations• Planning• Conservation• ISD
Reduce Injury and claims
• Fewer field trips• Locking meter caps• Leak detection • Remote shutoff
• Risk Mgmt• Operations• Meter Reading• Field Services
Field Instrumentation monitoring and control
• Ancillary equipment• Networked telemetry• Improved hydraulic modeling• Backup communications
• Operations• Wastewater• Maintenance• Water Quality• Security 74
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Strategic Issues Discussed
Issue How AMI Helps Who Affected
Revenue protection (e.g. write-offs, theft, adjustments, estimated reads)
• Meter alarms• Leak notification• MDMS• Monthly billing
• Billing• Metering• Finance• Customer Service• Field Services
Improved meter accuracy
• More accurate meters• Data mining• Increased work order
response
• Billing/Metering• Finance• Customer/Field Service• Water Supply Audits
Water loss control
• Remote leak detection• DMAs• MDMS• Pressure mgmt/sensors
• O&M• Conservation• Distribution Planning• Risk Mgmt• Public Affairs
Staff development• New technologies
transforms skill sets needed
• Meter Reading• Field Services• Billing• Operations 75
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Strategic Issues Discussed
Issue How AMI Helps Who Affected
Peak Demand Management
• Time of use billing• Improve conservation• Better facility sizing• Identify peak users
• Operations• Water Distribution
Planning• Water Quality
Stricter Water Quality and Backflow Regulations
• Real time modeling• In field-instrumentation• Backflow alarms
• Office of Water Quality• Backflow/Meter Reading• Security/Reg compliance
Customer Satisfaction
• Accurate, timely billing• Consumption website• Better water quality• System reliability• Faster leak repair
• Customer Services• Customers• Public Outreach• Water Conservation• System Water Quality
IT’S ALL ABOUT THE (Internal/External) CUSTOMER
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What might EBMUD AMI look like
• 63 collectors facilities
• 400k meters, lids, piping
• Typically hosted SaaS services
• Integration with new customer service tools and web features
• A public outreach campaign
• Conversion of many District practices
• Addition of new field instrumentation?
• AMI team
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Sensus Collector Network
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Next Steps
• Operate the USBR and PG&E projects through Dec 2019
• Begin billing AMI meters through AMI-2019
• Develop the business case for full system-2020
• Continue to test and develop specifications for new meter technology-Ongoing
• Pursue additional AMI grant and partnering opportunities-Ongoing
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Dave Wallenstein, P.E.
Operations and Maintenance Group
(510) 986-7614 [email protected]
Questions& Comments
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