Fast SCUC for Large-Scale Power Systems

In restructured power systems, independent system operators (ISOs) or regional transmission organizations (RTOs) execute the security-constrained unit commitment (SCUC) program to plan a secure and economical hourly generation schedule for the daily/weekly-ahead market. As the size of ISO/RTO increa...

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Vydané v:IEEE transactions on power systems Ročník 22; číslo 4; s. 2144 - 2151
Hlavní autori: Yong Fu, Shahidehpour, M.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: New York IEEE 01.11.2007
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Predmet:
Accuracy
Algorithms
Benders decomposition
Economics
Electricity distribution
Independent system operators
ISO
Large-scale systems
Markets
Mathematical models
mixed-integer programming
Network security
network security constraints
Networks
Power generation
Power generation economics
Power system economics
Power system modeling
Power system security
Power systems
restructured power systems
Scheduling
Security
security-constrained unit commitment
Strategy
Unit commitment
ISSN:0885-8950, 1558-0679
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Shrnutí:In restructured power systems, independent system operators (ISOs) or regional transmission organizations (RTOs) execute the security-constrained unit commitment (SCUC) program to plan a secure and economical hourly generation schedule for the daily/weekly-ahead market. As the size of ISO/RTO increases, the current SCUC algorithms could face critical challenges ranging from modeling accuracy to calculation complexity. This paper introduces an efficient fast SCUC (F-SCUC) for large-scale power systems. Main components used in the proposed approach include single-hour unit commitment with network security, single-hour unit commitment adjustment, unit commitment, economic dispatch, and hourly network security check. A reasonable and operational strategy for fixing and unlocking the generating units is explored. The iterative SCUC solution is controlled efficiently to accelerate the execution. Finally, the quality of F-SCUC solution is improved by executing a quick MlP-based SCUC solution according to the F-SCUC results. A 1168-bus system with 169 thermal units, a 4672-bus system with 676 thermal units, and two large systems with 1352 and 2704 thermal units are analyzed to exhibit the effectiveness of the proposed approach.
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ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2007.907444