Copyright © SEL 2009Copyright © SEL 2009
Practical Applications of Smart Grid Technologies
David J. Dolezilek Schweitzer Engineering
Laboratories, Inc.
Improve diversity, availability, and efficiency with information, computation, and communications
Increase Storage
Improve Renewables
Decrease Emissions
Improve reliability, stability, and economy with information, computation, and communications
Decrease Costs
Improve Safety
Increase Reliability
“We ReduceCustomers Per
Section”
Normally open tie
Sub 1 FR1
FR4
FR5
FR6
FR7
Sub 2
651R
651R
651R
651R
FR2
FR3
FR10
FR9
FR8
651R651R651R351S
651R651R651R351S
Add Fiber, Logic, and Communications
Normally open tie
Sub 1 FR1
FR4
FR5
FR6
651R
651R
651R
FR2
FR3
651R651R651R351S
Fiber pairs between controls
MIRRORED BITS communications
•••
•••
CB A R1 R2 R3 CB B
Normally Open
CB A R1 R2 R3 CB B
Normally Open
Protection Device Trips
Breaker
Fault
DA System Opens R1
CB A R1 R2 R3 CB B
Normally Open
Protection Device Trips
Breaker
Fault
DA System Opens R1
DA System Closes R2
CB A R1 R2 R3 CB B
Normally Open
Protection Device Trips
Breaker
Fault
Isolate Faulted Sections, Restore Unfaulted Sections From Alternate Sources
SEL Confidential
Solar Generation Includes Photovoltaic and Steam Turbines
PV – Photovoltaic
CSP – Concentrating Solar Power
SEL Confidential
Expandable Bus Protection Serves Solar Installations
Future 25 MW Photovoltaic Generation
Future 25 MW Photovoltaic Generation
Future 25 MW Photovoltaic Generation
Fiber Process Bus
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Hybrid Process Bus
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• Analogs via CCs