© 2006 San Diego Gas & Electric Company. All copyright and trademark rights reserved. Microgrid – A Smart Grid Alternative Ser Delivery Model? Thomas Bialek, PhD, PE Chief Engineer SAME Luncheon – May 12, 2010
Dec 30, 2015
© 2006 San Diego Gas & Electric Company. All copyright and trademark rights reserved.
Microgrid – A Smart Grid Alternative Service Delivery Model?Thomas Bialek, PhD, PE Chief Engineer
SAME Luncheon – May 12, 2010
SDG&E Borrego Springs Microgrid Project
Project Description:
In cooperation with the US Department of Energy and the California Energy Commission, SDG&E and 10 public and private sector partners will develop a “microgrid” project - a small version of its electric grid which takes advantage of local distributed energy resources and state-of-the-art controls to enhance grid operations – to achieve a >15% reduction in feeder peak load and improve system reliability.
Current Status:
•Site Selection complete – Borrego Springs•Finalizing system requirements and high level design•Developing customer communication plan•Collaborating with environmental agencies to satisfy permitting requirements
Energy
Storage
Micro turbine
Rooftop PV Solar
Utility-scale Energy Storage
Distributed GenerationHome Energy System
Ground PV Solar Array
PHEVs
Switches &
Power
Electronics
National Energy Technology Laboratory
Distributed Energy ResourcesUtility-scale Energy StorageRooftop PV SolarMicro-turbinesBuilding Energy StorageCommunity Energy StorageDistributed GenerationHome Energy SystemPHEVsGround PV Solar Array
Grid ResourcesCapacitor Banks
Voltage RegulatorsAutomated Switches
Power ElectronicsCommunications
InformationElectricity PricingDER statusDemand Response ProgramsNetwork statusCommunity ObjectivesLoad and Resource Profiles
6
Microgrid Selected Project Site: Borrego Substation
Borrego offers SDG&E an opportunity to be the leader in the microgrid area, with the possibility of being able to island an entire substation with peak load of over 13 MW.
Key Characteristics:
Strengths:• No residences nearby, plenty of land
• More Existing Solar Customers
• Large Reliability Improvements Possible
• Possibility of ‘Islanding’ Entire Community
• Great learning environment
• Extendable to service territory
Challenges:• Remote Area
• Challenging Communications Environment
• New Fencing Required
• Requires Accelerating schedule for
Condition Based Maintenance and AMI Deployment
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Project Architecture: Context Level Architecture
MicroGrid Context Level ArchitectureEndpoints Last Mile Network Backhaul Network
SE
u E
SB
/EI
Outage Management/Distribution Management(OMS/DMS)
Itron MDMS
Customer Information System (CISCO)
Itron AMI Meter
Data Collection Backoffice Systems
SCADA
Openway Collection Engine
Utility DG (2x 1.8MW)- Diesel Generator
Utility Storage (~1 MW)- 3.3kw Battery
- TBD
VAr Devices (~1 MW)- VAr Compensator
Feeder Automation (FAST)- SCADA Automated Switches
- SCADA Controllers on3 existing capacitors
RF Mesh
HAN Device (ADM)
- Thermostat- Water Heater- Pool Pump
Customer Storage(Gridpoint Connect)
Solar(Gridpoint Connect)
HAN
HAN
HAN
GIS
Shared with CBM
DRCA
CRM SAP
DERMS
IBM
IBM
IBM
IBM
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Issues and Challenges
• Coordination of Efforts Across Departments and with Subcontractors
• Integration of Utility and Customer Distribution Energy Resources
• Distribution Automation
• Asset Management
• Security – Cyber & Physical
• Establishing Secure Communications Network
• Development of Appropriate Systems and Related IT Architecture
• Customer Participation in DG and Demand Response Programs
• Regulatory and Tariff Impacts
• Integration of New Market Participants
• Cross-jurisdictional Issues