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Unit commitment considering voltage and reactive power constraints

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3 Author(s)
Pan, Z.Y. ; Sch. of Electr. Eng., Shandong Univ., Jinan, China ; Han, X.S. ; Yang, P.P.

Based on the traditional study of Unit Commitment considering active power security constraints, the voltage and reactive power constraints are introduced to build a relatively comprehensive model. According to Benders decomposition, the problem is decomposed into a master problem and a subproblem. The master problem solves security-constrained unit commitment (SCUC) based on DC power flow model, The subproblem is composed of a series of reactive power optimization problems. Benders cuts produced by the subproblem are introduced to the master problem as the additional constraints. And a corresponding iterative algorithm is also proposed. With the proposed optimization mechanism, all kinds of present methods are applicable, and a flexible decision-making mechanism is set up. It is suitable for the solution of large scale power system as well.

Published in:

Universities Power Engineering Conference (UPEC), 2009 Proceedings of the 44th International

Date of Conference:

1-4 Sept. 2009