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Coordination of Midterm Outage Scheduling With Short-Term Security-Constrained Unit Commitment

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5 Author(s)
Yong Fu ; Electr. & Comput. Eng. Dept., Illinois Inst. of Technol., Chicago, IL, USA ; Zuyi Li ; Shahidehpour, M. ; Tongxin Zheng
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The proposed model solves the coordinated generation and transmission maintenance scheduling with security-constrained unit commitment (SCUC) over the scheduling horizon of weeks to months. The model applies the Lagrangian relaxation technique to decompose the optimization problem into subproblems for generation maintenance scheduling, transmission maintenance scheduling, and short-term SCUC. The decomposition and cooperation strategy is applied to the first two subproblems for the scheduling of generation and transmission maintenance. The SCUC solution is based on the mixed integer programming (MIP) technique. The optimal hourly results for maintenance scheduling, generation unit commitment, and transmission flows are obtained using a chronological load curve. Effective strategies are applied for accelerating the convergence of the hourly solution. The numerical examples demonstrate the effectiveness of the proposed model.

Published in:

Power Systems, IEEE Transactions on  (Volume:24 ,  Issue: 4 )