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ALSTOM Power - EMB - - P 2
Evolution of Generation Scheduling
1980 201020001990
•Ad-hoc advisory •UC, EconA/B, HTC•DP, heuristics
•RTO market-clearing •SCUC•LR, LP
•Smart-grid scheduling•SCUC+ DR + Storage•MIP, stochastic
Formation
Production
Extension
ALSTOM Power - EMB - - P 3
Smart Grid Transforming the Energy Industry
Demand - energy, electricity
Environment – conservation, laws
Technology – power, IT
Choices - end-users, operators
Energy drives business model changes
ALSTOM Power - EMB - - P 4
Impacts of Smart Grid Transformation on Energy System Operations
• Renewable Generation & Demand Response − Intermittent generation with limited forward visibility− Implicit, indirect control of stochastic distributed resources
• Reliability and efficiency mandates − MW & Price volatility− Asset portfolio (fleet/plant) optimization
• Expansion of choices through market mechanisms − Electricity products & services− Extending wholesale markets to retail exchanges
• Asynchronous decisions with distributed intelligence− Challenges in temporal and spatial coordination− Business organizational (mis)-alignment
Uncertainty Drives Value for Flexibility
ALSTOM Power - EMB - - P 5
Addressing Uncertainty & VolatilityChallenges
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LMP 2009-7-1 (Wed)LMP 2009-7-11 (Sat)
Physical (MW) Financial ($)
ALSTOM Power - EMB - - P 6
Resource Flexibility
• Model− Nominal parameters: notification, commitment, dispatch− Life-cycle impact parameters: econ.& physical impacts for
exceeding nominal range (e.g. ramping, max/min MW)• Data
− Equipment monitoring & diagnostic, performance analysis− Life-cycle impact analysis
• Balancing between flexibility and life-cycle impacts− Integrated co-optimization− Sensitivity information
ALSTOM Power - EMB - - P 7
Fleet Optimizer
Multi-Tier Resource Optimization
Plant Optimizer
Advanced DCS (MPC)
DCS
Machine Control
Unit production targets, t= 1,…Tfor energy, reserves, etc.
System & Market model,Fleet targets/opportunities, Plant & unit models
Plant/Unit targets,Detailed component models Station services
Stead-state targets for plant Process:Boiler, Emission, BOP…
Dynamic Process model optimizedfor: process inter-dependencies and forward trajectories Dynamic trajectories for
manipulated & Controlled variables
Control performance tracking