Impact of Operational Flexibility on Electricity Generation Planning With Renewable and Carbon Targets

Recent work on operational flexibility-a power system's ability to respond to variations in demand and supply-has focused on the impact of large penetration of renewable generation on existing power systems. Operational flexibility is equally important for long-term capacity expansion planning....

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Bibliographic Details
Published in:IEEE transactions on sustainable energy 2016-04, Vol.7 (2), p.672-684
Main Authors: Palmintier, Bryan S., Webster, Mort D.
Format: Article
Language:English
Subjects:
capacity expansion
Capacity planning
Carbon
Carbon dioxide
carbon policy
Computational efficiency
Computational modeling
Demand
Flexibility
integer programming
Load modeling
Maintenance engineering
Mathematical models
Mixed integer
Mixes
Planning
Power systems
renewables
Unit commitment
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Summary:Recent work on operational flexibility-a power system's ability to respond to variations in demand and supply-has focused on the impact of large penetration of renewable generation on existing power systems. Operational flexibility is equally important for long-term capacity expansion planning. Future systems with larger shares of renewable generation, and/or carbon emission limits, will require flexible generation mixes; yet, flexibility is rarely fully considered in capacity planning models because of the computational demands of including mixed integer unit commitment within capacity expansion. We present a computationally efficient unit commitment/maintenance/capacity planning formulation that includes the critical operating constraints. An example of capacity planning for a Texas-like system in 2035 with hypothetical RPS and carbon policies shows how considering flexibility results in different capacity and energy mixes and emissions, and that the omission of flexibility can lead to a system that is unable to simultaneously meet demand, carbon, and RPS requirements.
ISSN:1949-3029
1949-3037
DOI:10.1109/TSTE.2015.2498640