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Agenda
Company overview – who is Otter Tail Power???
Interruption monitoring system end of life – technology migration
Solution search
Solution selection and Itron partnership
OTP phased implementation approach Benefits and next steps
Lessons learned
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Company Overview –Who is Otter Tail Power???
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Otter Tail Corporation Structure
Vinyltech Corporation
PVC pipe manufacturerPhoenix, AZ / 2000Steve Laskey51 employeeswww.vtpipe.com
Northern Pipe Products, Inc.
PV pipe manufacturerFargo, ND / 1995Steve Laskey91 employeeswww.northernpipe.com
T.O. Plastics, Inc.
Custom plastic parts manufacturerClearwater, MN / 2001Mike Vallafskey151 employeeswww.toplastics.com
BTD Manufacturing, Inc.
Metal fabricatorDetroit Lakes, MN / 1995Paul Gintner829 employeeswww.btdmfg.com
Otter Tail Power Company
Electric UtilityFergus Falls, MN / 1907Tim Rogelstad747 FT employeeswww.otpco.com
ELECTRIC MANUFACTURING PLASTICS
VARISTAR
IOU: Nasdaq – OTTR2017: $850M net
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Energy Resource Mix
57%
1%
20%
22%
Coal Gas/Oil Renewable Purchased
2017US – 30%Worldwide – 37%
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Quick Facts• 70,000 square-mile service
area
• More than 5,800 miles of transmission lines
• Over 600 communities served
• 132,200+ customers
• Approximately 800 employees (including part-time)
• About 800 MW of owned generating capability
• About 245 MW wind
Average 220 customers/community!!!
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OTP Demographics Summary:
• Large land mass• Many small communities• Small customer density• Very rural, agricultural• Tri-state
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OTP’s Legacy Interruption Monitoring System“IMS”
- OTP measures reliability at the feeder level- Due to demographics, it is a good approximation
- Lots of exposure – transmission and sub transmission- Majority of interruptions occur on “upper” delivery systems
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TVM
OTP’s “Old” Interruption Monitoring System
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OTP’s IMS End of LifeSupplier quit manufacturing equipment two years ago
2G Sunset, AT&T 12/31/16, Verizon 2018?
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Replacement Solution Search and Requirements
Primary Objective: Provide accurate interruption data for indices’ calculations as required by
regulatory entitiesFlexible to meet future reporting requirements
Secondary Objective: System hardening and restoration improvementsProvide system analytics for optimized operationsIdentification of worst performing line sectionsInterruption by cause analysis, 80/20 pareto analysisPrioritize future maintenance and capital expendituresInterruption alarms/notifications to appropriate responsible partyVegetation management data
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Next-Generation IMS Search Requirements
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Replacement Solution Search and Requirements
New IMS Requirements• Meet all reporting
requirements, MN/ND/SD commissions
• Calculate indices: SAIDI, SAIFI, CAIDI, MAIFI, CEMIn, etc.
• Identify “major event days” 2.5 beta method
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Replacement Solution Search and Requirements
0
20
40
60
80
100
120
$0
$500,000
$1,000,000
$1,500,000
$2,000,000
$2,500,000
$3,000,000
$3,500,000
$4,000,000
2010 2011 2012 2013 2014 2015
dollars
SAIDI
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Replacement Solution Search and Requirements
0%
10%
20%
30%
40%
50%
60%
70%
2011 2012 2013 2014 2015 2016
Weather-related/total interruptions
Weatherrelated/totalinterruptions
Linear (Weatherrelated/totalinterruptions)
0
20
40
60
80
100
120
140
Series1
Interruption by cause analysis
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Replacement Solution Search and Requirements
After an exhaustive search, OTP decided to partner with Itron to provide a new interruption monitoring system utilizing a solution based on AMI technology…
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Reasons/Benefits for Selecting AMI Solution AMI is the pathway to industry transformation
This solution provides OTP with AMI experience
Provides a DA platform for the future
Ease of installation
Existing GIS integration
Itron provides complete managed servicesAllows OTP to focus on its core competenciesNo need to focus on managing IT systems
Itron solution met all requirements +Indices’ calculationsInterruption/voltage alarming2.5 beta Storm NormalizationInterruption by cause analysisProvides analytic data to optimize our operationsPlus provided a platform to expand and grow
212121
Phased ApproachOTP (currently) Measures Reliability at the Feeder Level
Bellwether
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Outage Detection – Bellwether AMIWhat do we get?
» Interruption Monitoring System with strategically placed AMI meters
• One or more meters per phase per Feeder Section
• Non-AMI service points (customers) assigned to Circuit Phase
• Dashboard display with current outage status or historic data
• Email/text interruption notifications to utility personnel
• Outage detail communications via web services
» Benefits
• Alternative to SCADA or OMS which fits our demographics
• Inexpensive startup and operation
• Scalable with additional meters
• Additional meters increases granularity for both interruption and voltage analytics
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OTP — Phased Approach
2018 completion
350 feeders
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Additional Near-Term Benefits
Once the basic platform is set, additional meters can be deployed downstream from the original bellwethers
Downstream of sectionalizing equipmentTrunk line reclosersProblem lateral circuitsEvery fused lateral circuitEnd of lines for voltage profiling analytics
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Additional Deployment – Outage Analysis
Feeder
A
A
A
Section 1
T1
A
Feeder
A
A
A
A
A
A
Section 2
Section 1
Feeder
A
A
A
A
A
A
A
Section 1
Section 2
Section 3
1 Feeder Section 2 Feeder Sections 3 Feeder Sections
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Voltage Analytics
AMI locations measure voltage on three phasesHigh or low voltage exception alarming near real-time
Historical voltage for loading analysis
Future AMI additions provide end-of-line analysisVoltage profiling
Additional AMI meters synergisticSupports both voltage and interruption analytics
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Voltage Analysis Provides Additional Interruption Detection Granularity
» Every outage bellwether provides voltage data – usually closer to feeder trunk
» Every voltage bellwether provides outage data for redundancy and restoration validation – usually closer to feeder/lateral endpoints
» Voltage coverage needs drive better outage analytic performance
» Outage coverage needs drive better voltage analytic performance
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Benefits and Next Steps
Full AMI Deployment OptionsLarger community(s)Large population center/regionsIndustrial park(s)One state…Plans underway for one feeder full deployment study
AMI deployed community/region/state would realize full benefitsRemote connect/disconnectReduced CAIDIInstant readings, no need for estimated readsCustomer access to interval data via web portalEtc.
Lessons Learned…
• GIS added tasks and workload
• Meter shop added tasks, new technology, and workload
• Legacy system process change for meter read personnel
• Bellwether meter install location identification (Field Lesson)
• Get ready to introduce about three dozen new acronyms into your daily conversations…
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Benefits and Next Steps
Improved interruption detection
Improved reliability analysis
Improved voltage analysis
Transformer load monitoring
Theft detection/revenue protection
Future distributed intelligence applications CUSTOMERBENEFITS
OTP BENEFITS
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Benefits and Next Steps
We are just getting started…
Implementation of this project will…Introduce OTP to AMI technology
Meet our reporting requirements going forward
Provide system analytics
Improve our restoration efforts
Most importantly…
PROVIDE A TECHNOLOGY PLATFORM FOR THE FUTURE
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