Hannover High End Utility Metering
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The document discusses smart meters and utility metering applications. It describes high-end utility meters that combine energy metering, power quality monitoring, I/O capabilities, and communications. These advanced meters can be used for revenue and tariff metering, power quality analysis, substation automation, equipment monitoring and control, and improving system accuracy. The document also provides examples of how a utility is using power quality monitoring systems to identify issues early, avoid equipment failures, reduce outage times, and lower costs.
Hannover High End Utility Metering
- 1. Really, Really Smart Meters Smart Grids Forum April 24, 2012 Hannover Messe
- 2. Reliability Efficiency Sustainability Reduce Maintain Optimize Energy Distributed Prevent Energy Resources Duration Quality Capacity Management Substation Complex Sensor data Automation Rates Feeder Voltage Customer Waveform Analysis Energy Storage Automation Optimization Portal Home/Building Micro-Grids Automation Demand PHEV Response Schneider Electric - Division - Name – Date 2
- 3. High End Utility Metering Offer ● 80% of Utility Metering is “Smart” meters -> Residential market ● High End metering is focused on a much smaller market including: ● Production – Generation metering ● Transmission – Grid metering for bulk power exchange ● Distribution – Large industrial customers and renewable grid connections Meter Volumes Revenue Generation Metering Distribution M etering Residential Schneider Electric - Division - Name – Date 3
- 4. High End Utility Metering Class 0,2 metering offer that combines energy metering, power quality, I/O and communications in a single device to solve a wide variety of utility applications including one or combination of the following: ● Revenue/tariff metering for billing ● Power quality compliance & analysis ● Substation automation – provide operational data to SCADA system and control capability ● Equipment monitoring and control (peak shaving, breaker control, generators) ● Improve system accuracy with existing equipment (Loss compensation) Schneider Electric - Division - Name – Date 4
- 5. Key Functionality for Utility Metering Schneider Electric - Division - Name – Date 5
- 6. Key Utility Metering Applications for: Renewable Energy ● Generation asset monitoring – turbine, gas-fired generator, ● Power Quality at intertie between renewable asset and grid ● Operational data for windfarm control systems assets Feeder Automation ● RTU Functions - Monitoring breaker status and/or other substation values ● Feeder Monitoring – Operational data about feeders to SCADA system, Gateway functions and totalization (Mastering) ● Power Quality – Provide waveform and compliance data for large substations Revenue Metering ● High accuracy energy metering (legacy pulsing, 3rd party billing packages (DLMS, MV-90)) ● Loss compensation for transformers and transmission lines Schneider Electric - Division - Name – Date 6
- 7. Reliability is the main priority for Distribution Operators ● Safety and Reliability are often considered ONE goal and have the highest priority historically ● “The flow of capital spend is generally directed at problems over opportunities” -Booz, Allen, Hamilton; Edison Electric Institute Strategic Issues Forum ● “Keeping your lights on safely, efficiently and at a reasonable cost are my highest priorities as Dominion Virginia Power chief executive officer” -Paul Koonce, CEO Virginia Dominion Power Power Interruption is Expensive Average Cost for 1 Hour of Power Interruption per Customer Industry Amount Cellular communications $41,000 Telephone ticket sales $72,000 Airline reservation system $90,000 Semiconductor manufacturer $2,000,000 Credit card operation $2,580,000 Brokerage operation $6,480,000 Source: US Dept of Energy Schneider Electric - Division - Name – Date 7
- 8. But the electrical industry is transforming Reliability ► Environmental pressure ► Decentralized renewable energies ► Deregulation Reliability ► Interconnections Efficiency ► Supply demand response ► Energy efficiency ► Electric cars Sustainability Our customers have defined the mechanism for this transformation as ‘Smart Grid’ Schneider Electric - Division - Name – Date 8
- 9. Substation Metering Applications Metering Applications COMMUNICATION INFRASTRUCTURE Control Center Level Substation Level Incoming Metering Bay Level Critical Load Monitoring Process Level Schneider Electric - Division - Name – Date 9
- 10. Fault Analysis Impact Potential for SAIDI reduction using location techniques Crew call- Patrol for fault Travel to area Repair in location Potential for SAIFI reduction using predictive methods Schneider Electric - Division - Name – Date 10
- 11. Fault Location F. Zavoda, M. Tremblay; “Symbiosis Between ADA Applications and PQ Monitoring in Smart Grids”, EPRI PQ and Smart Distribution Conference and Exhibition; Québec City, June 2010 Schneider Electric - Division - Name – Date 11
- 12. Fault Anticipation ● Waveform signatures and trends indicate incipient failures ● Distributed sensors provide better view of operation for condition based maintenance (cap controller, recloser, etc) ● Distributed sensors provide better location information when faults do occur Schneider Electric - Division - Name – Date 12
- 13. JEA Facts and Figures The company ● Largest publicly owned utility in Florida, #8 in US ● Over 2300 MW of generation capacity from coal, gas, and landfill ● 360,000 customers The system ● 17 PQ monitors at generators ● 73 PQ monitors at Transmission and Distribution substations ● 92 PQ monitors at large industrial sites ● Connected via MODEM, Ethernet, and wireless ● Central servers running data collection and analysis software Schneider Electric - Division - Name – Date 13
- 14. System architecture Schneider Electric - Division - Name – Date 14
- 15. Northshore Substation T1 Issue ● System initially reported a 0 current value on C phase of very short duration (less than half a cycle) ● This issue would happen a few times during each day ● Over a 4 week period the duration of the 0 current on C phase increased to just over 1 cycle. Schneider Electric - Division - Name – Date 15
- 16. Waveform of Northshore T1 Note how “blue” line is flat = no current flow = melting metal in tap changer Schneider Electric - Division - Name – Date 16
- 17. Northshore Substation Issue ● Investigation of the distribution system pointed out one possible cause. A load tap changer in a distribution transformer was the likely suspect. ● A maintenance outage was planned and the transformer was taken off line and opened up. ● A broken pin was found on C phase of the tap changer transfer switch Schneider Electric - Division - Name – Date 17
- 18. Tap Changer for Northshore T1 note broken pin Schneider Electric - Division - Name – Date 18
- 19. Tap Changer for Northshore T1 note melted parts Schneider Electric - Division - Name – Date 19
- 20. Northshore Substation Issue ● After the planned maintenance it was determined that the transformer had about 2 weeks before a catastrophic failure occurred. The blade on the tap changer switch would have eventually hit the side of the tank once the jaw completely melted. ● The PQ system saved JEA over $1M in equipment replacement costs plus customer satisfaction remained high since there was no prolonged outage. Schneider Electric - Division - Name – Date 20
- 21. Bay Meadows Transformer T2 ● Similar Issue to Northside Transforemer T1 ● C phase waveform shown below ● JEA scheduled a shutdown to do maintenance Schneider Electric - Division - Name – Date 21
- 22. Connector Ring - Picture 1 Schneider Electric - Division - Name – Date 22
- 23. Bay Meadows Transformer T2 ● PQ system prevented this transformer from failing ● Transformer replacement cost would have been over $1M ● Customer Satisfaction did not “take a hit” as no outage was seen by the customer. ● Since this event, the EEM system has been programmed to give an alarm for this waveform signature. This will help identify an issue faster. ● The automated report identified a third LTC problem that required the replacement of 49 contacts “These kinds of issues are a ticking time tomb. In the past, an LTC failure has usually meant that we lose the transformer. The meters and software have already potentially saved three transformers at $1 million apiece. And the value to customer service is immeasurable in avoiding unplanned outages to thousands of customers.” - Tom Ventresca, Power Systems Engineer, JEA Schneider Electric - Division - Name – Date 23
- 24. Conclusions ● Power Quality is an important part of Smart Grid ● Research shows power quality data can be used to locate faults and to identify pending failures ● Technology exists today to gain the benefits ● PQ Systems have proven they can pay back Schneider Electric - Division - Name – Date 24
- 25. Stay Connected to Schneider Electric www.facebook.com/SchneiderElectric www.twitter.com/SchneiderElec www.Linkedin.com/groups?gid=56843 WWW.Schneider-Electric.com www.youtube.com/CorporateSchneider SETV.schneider-electric.com Schneider Electric - Division - Name – Date 25
- 26. Questions? Schneider Electric - Division - Name – Date 26