DocumentCode :
792423
Title :
Security-constrained unit commitment for simultaneous clearing of energy and ancillary services markets
Author :
Li, Zuyi ; Shahidehpour, Mohammad
Author_Institution :
Electr. & Comput. Eng. Dept., Illinois Inst. of Technol., Chicago, IL, USA
Volume :
20
Issue :
2
fYear :
2005
fDate :
5/1/2005 12:00:00 AM
Firstpage :
1079
Lastpage :
1088
Abstract :
This paper introduces a security-constrained unit commitment (SCUC) model with emphases on the simultaneous optimization of energy and ancillary services markets. Benders decomposition is used to decouple the SCUC into a unit commitment (UC) master problem and hourly network security checking subproblems. Lagrangian relaxation is used to decouple the UC problem into individual single-unit commitment problems. Dynamic programming is used to find the optimal commitment decision. A simultaneous marginal curve algorithm is proposed to find the optimal values of energy and ancillary services. A six-bus system with three units and the IEEE 118-bus system with 54 units are analyzed to illustrate the proposed model.
Keywords :
dynamic programming; power generation scheduling; power markets; power system security; power transmission; Benders decomposition; Lagrangian relaxation; ancillary service market; dynamic programming; energy optimization; marginal curve algorithm; security-constrained unit commitment; Costs; Dynamic programming; Helium; ISO; Lagrangian functions; Power system modeling; Power system security; Spinning; Voltage; Ancillary services; energy; security-constrained unit commitment (SCUC); transmission security;
fLanguage :
English
Journal_Title :
Power Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8950
Type :
jour
DOI :
10.1109/TPWRS.2005.846063
Filename :
1425606
Link To Document :
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