Unit commitment considering voltage and reactive power constraints

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.