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POWER SYSTEMS CONFERENCE Welcome to Charleston
POWER SYSTEMSCONFERENCE
POWER SYSTEMSCONFERENCE
Welcome to Charleston
POWER SYSTEMSCONFERENCE
POWER SYSTEMSCONFERENCE
It’s A Brave New World !
John S. (Sam) Holeman, IIIDuke Energy
Vice President, Transmission System Planning & Operations
My Background and History
Sam Holeman – The Perspective of a System Operator/System PlannerObtained Electrical Engineering Degree – Power System EmphasisWorked on Energy Management Systems (EMS)System Operations Support EngineerProfessional Engineer in NC and SCSystem Operator on shiftControl Center ManagerSystem Operations Engineering and Training LeadershipObtained MBA System Planning and Operations Leadership 32 years in pretty much the same job
Yes, I am a dinosaur but not extinct just yet 3
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About Duke Energy
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• One of the Largest Electric Holding Companies in the United States
• Electric Utility operations in North and South Carolina, Indiana, Ohio, Kentucky and Florida serving 7.5 million customers
• 50,000 MW of regulated generation
• Renewable generation of 2200 MW of Wind and 2845 MW of Solar throughout the United States and growing monthly
Copyright © 2018 Duke Energy Corporation. All rights reserved.
WABAC Machine - My first day of work
1985
Using the system designed and built in the 1960s and 1970sBill Lee – one of the innovatorsEnd of Nuclear Expansion period
Most complex machine ever built by manEastern Interconnection of North America
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50%48%
2%
Nuclear
Coal
Hydro & Oil
Does anyone remember the WABAC machine ?
Top 10 Customers All textile companies All headquartered in our service territory Duke Power was formed in part to service this load
System Operations – Energy Management System My first job – System Applications SCADA Alarming Economic Dispatch Load Forecasting – peak load approx. 14,000 MWs
– Summer peaking– Growing 4% to 5% annually
Advanced applications – well sort of….6
Fast forward to 2018 through the Guardian of Forever….
Load is low growth/flat to declining
Nuclear in a standstillVC Summer in South CarolinaVogtle in Georgia
Environmental concerns about carbon emissions andby-products from coal combustion
Natural gas supply increases and diversifies
Cost of renewable technology down, supply up
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Fast forward to 2018 – Live Long and Prosper….
Very few textile customers left with significant load
High Tech/Data Center/Bitcoin Customers
Low Tolerance for interruptions/transients
Desire to be good environmental stewards
Energy Control Centers (ECCs)
State of the art visualization and situational awareness tools
Using and depending on advance power system applications daily
Engineers on shift 8
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National Perspective: Solar Irradiance
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National Perspective: Solar projects
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Estimated Solar Projections in Carolinas
0
1000
2000
3000
4000
5000
6000
7000
8000
2016 2017 2018 2019 2020 2021 2022 2023 2024
MW (A
C)
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Variability and Intermittency
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Ramp Rates in Winter Load Shape
With 2200 MW of solar, the highest ramp rate occurs at HE 10:00 at over 1900 MW/hr
With 2200 MW of solar, the evening ramp rate from 14:00 ‐16:00 more than triples to 1250 MW/hr
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High risk ofdeficit energy
High risk ofexcess energy
1100 MW/hr
400 MW/hr
1900 MW/hr1250 MW/hr
Copyright © 2018 Duke Energy Corporation. All rights reserved.
Lowest Reliability Operating Level (LROL)
Management of Operational Excess Energy due to Must-take Solar
14Copyright © 2018 Duke Energy Corporation. All rights reserved.
Supply and Demand Balance Impact on Frequency
Goal – stay balanced Balanced measured by ACE – Area Control
Error (MW) All BAs drive interconnection frequency At Interconnection level More demand than supply – frequency drops More supply than demand – frequency rises
15Copyright © 2018 Duke Energy Corporation. All rights reserved.
Lynn Good current President and CEO of Duke Energy
What is our purpose at Duke Energy?
Why does Duke Energy Exist?
16Copyright © 2018 Duke Energy Corporation. All rights reserved.
Lynn Good current President and CEO of Duke Energy
To power the lives of our customers and the vitality of our communities!
17Copyright © 2018 Duke Energy Corporation. All rights reserved.
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My Motivation
Conclusion from a System Operator
Renewables are here to stay…
Let’s learn how to operate the system with them.
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Q&A
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