Asset Management Techniques Using Smart Grid Sensors
Presented by: Kevin Corcoran, Director - Product Line Management
Tollgrade Communications
© 2014 Tollgrade Communications, Inc.
Asset Management Monitoring
$49B Cumulative Global Market Through 2023
2
Asset Management Investment Key Drivers Asset Management Objectives: • Maximize asset utilization and lifetime, manage risks • Timely maintenance and upgrades to meet demand and avoid
outages driven by equipment failures Key Drivers: • Reduce catastrophic events • Maximize network performance and increase efficiency • Reduce unplanned and planned outage costs • Reduce truck rolls • Condition-based rather than time-based maintenance • Improved safety
3
Smart Grid Sensing Use Cases and Solutions
4
Coordination between departments Enabled by insightful data and analytics
Operations
Engineering
Asset Management
Smart Grid Sensor Data & Analytics
North America Use Case Trends
Predictive Maintenance
Substation Monitoring
Cap Bank Monitoring
5
Preventative Maintenance Use waveforms to prevent outages and respond to problems: • Vegetation growth • Failing underground cables
– 10 customer complaints of blinks over 2 months 3 troubleman visits, no problem found UG cable subsequently failed, 17 customers affected
– 6 fault current events logged. Could be leveraged to characterize and troubleshoot root cause of complaints
Example of waveforms from failing underground cable
6
Preventative Maintenance Multiple fault current events in short period of time - predictors of potential faults and outages: • Animal Contact
– Three 4kA fault current events over 2 weeks at same location – Transformer fuse subsequently blew due to animal contact – 38 customers
interrupted
Example of animal contact at transformer
7
Substation Monitoring • Identify & prevent transformer and circuit overloads • Correct phase imbalance • Improve planning with historical load profile data • Eliminate truck rolls to read load at substations • Record fault current events – leading indicators of failure
8
Substation Monitoring • Smart grid sensors & data analytics
– Cost-effective alternative to traditional SCADA solutions – Substation transformer loading – Loading per circuit and per phase – Nameplate overload event logging and alarming
9
Load Monitoring & Switching • Load Switching – Better Visibility & Confidence
Problem: – Tie points are often smaller gauge conductors without monitoring – Transfer studies needed to determine risk of switching operation – Without monitoring:
• Conservative estimates based on limited data
Solution: – With cost-effective smart grid sensor monitoring & reports:
• Accurate real-time and historical data • Improved confidence in approved switching orders
10
Capacitor Bank Issues • Blown fuses go undetected for
months or years • Tremendous O&M expense to
perform periodic inspections • Installing a SCADA enabled
capacitor controller is a large undertaking and expensive
11
Capacitor Bank Monitoring
Inductively powered sensors can alert utility in less than an hour when there is a blown fuse – tremendous savings to O&M budget
12
Key Considerations to Evaluate Sensors
“From an asset manager’s perspective, this technology will
allow us to know immediately if there is a problem that is
easy to fix or if it is a serious problem that requires capital
investment.” -- Ivano Laboricca, Vice President of Asset Management
Toronto Hydro
13
Key Considerations to Evaluate Sensors • Ease of deployment:
– Weight, ease of install with hot stick – Need for pole-mounted equipment, cabling, and 120V secondary power
• How is it powered and maintained: – Inductively, batteries, solar panels? – Remote configuration, firmware upgrades, and administrative
management tools • Communications options:
– Cellular, wireless mesh, 3rd party radios/modems • Data accuracy:
– Does it have a pre-packaged analytics package to filter out false-positives? • Scalability:
– When thousands are deployed, will the architecture of the platform scale? • Ease of integration into SCADA, Historian, and DMS:
– Has the sensor vendor been able to integrate with back-office systems? How long did integration take?
14
Thank You! For more information:
Email: [email protected] or visit www.tollgrade.com
Substation Monitoring App Guide Cap Bank Monitoring App Guide Preventative Maintenance Whitepaper
15
