Dynamic
Distribution Grids
A National Town Meeting on
Demand Response & Smart Grid
June 26, 2013
Neal Bartek
Smart Grid Projects Manager
© 2012 San Diego Gas & Electric Company.
All trademarks belong to their respective owners. All rights reserved.
San Diego Gas & Electric
• Subsidiary of Sempra Energy
• Regulated public utility
• Provide safe & reliable energy service to
3.4 million consumers
- 1.4 million electric meters
- 840,000 natural gas meters
• 4,100 square mile service territory in
San Diego & southern Orange Counties
(25 cities)
• Owns 1,835 miles of electric transmission
lines and 21,601 miles of electric
distribution lines
• Operates two compressor stations, 166
miles of natural gas transmission pipelines,
8,100 miles of distribution pipelines and
6,197 miles of service lines
• 4,500 employees
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Agenda
Drivers
Dynamic
Distribution
Grids
Dynamic
Grid Tools
Real Life
Example
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Drivers –
Growing Need for Flexibility starting in 2015
• Significant ramping will be required in both AM and PM to
accommodate renewable production
• Governor has a plan for 12 GW of DER (> 1 GW for SDG&E)
• Coordinated operation of various DER can help mitigate
ramping requirements for baseload generation
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Drivers –
Renewable Variability/Intermittancy
• Advanced forecasting
March Peak Day 2020
4,000
capabilities for dispatching
DER
smoothing spikes
System
3,000
2,500
MW
• Distributed controls for
3,500
2,000
1,500
1,000
Net of Wind & Solar
500
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2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
2020 Installed Capacity
MONTH
Mar
SOLAR DG
(MW)
600
SOLAR
WIND (MW)
Central (MW)
1250
725
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Drivers –
Growth in Commercial/Residential Solar Generation
• Net Energy Metering (NEM) production “hides” load
• Ability to create voltage issues and excess equipment operations
Drivers –
Fast Forward to 2020
• Rule 21 is being revisited to consider requiring “smart”
inverter functionality
• Smart Inverters have the ability to respond to control
signals from the utility
~ 12% of forecasted
5000 MW peak load
Historical growth is significantly
higher than the 18% shown.
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Drivers –
San Diego’s Solar Rooftops
• More than
25,000 rooftop
solar
installations in
San Diego,
highest per
capita rate in
country
• Produce more
than 184 MW
of clean
electricity
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Dynamic Grid Tools –
Microgrids
Microgrids:
• Manage DER
• Manage
voltage and
power quality
at local level
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Dynamic Grid Tools –
Microgrid Opportunities
• Support the integration of renewable
resources
• Improve reliability and power quality
• Support emergency operations
• Ability to “ride through” outages
• Optimize energy usage
• Enable participation in new markets for
demand response and ancillary services
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Dynamic Grid Tools –
Outage / Distribution Management System
(OMS/DMS)
Replace existing OMS and install new DMS system with integrations
to GIS, CIS, AMI, SCADA, Crew Dispatching …
WENT LIVE SEPTEMBER 29, 2012!
Future
Present PAST
►
Paperwork
► Manual processes
► Software systems are not fully
integrated
► Most Unplanned outages are
reported by customers
►
►
►
►
►
NOW
Near real time data
Automated process
Integration with many systems
Faster outage restoration times
Improved outage
communications
Borrego Springs Microgrid
Demonstration Project
Utilize advanced technologies to integrate and manage distributed resources within the Smart Grid
Budget:
$8.0M DOE and $2.8M CEC plus matching funds from SDG&E and partners
Benefits:
 Integrate and leverage various generation and storage configurations
 Reduce the peak load of feeders and enhance system reliability
 Enable customers to become more active participants in managing their energy use
Distributed Energy
Resources
Substation
Energy
Storage
Customer
Energy
Management
Microgrid
Controller
Feeder
Automation
System
Technology
Home
Energy
Storage
Community
Energy
Storage
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April 8, 2013
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Thank you!
Neal Bartek, nbartek@semprautilities.com
http://www.sdge.com/smartgrid/
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