Lagrangian Decomposition Approach Based Voltage Security Constrained Unit Commitment
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2017, Vol 5, Issue 2
Abstract
As the electrical industry increases many problems arises in controlling the generating units. Unit commitment decides which unit to operate during a certain period time. The objective of the unit commitment is to find a unit commitment schedule that minimizes the commitment and the dispatch costs of meeting the forecast system load taking into account various constraints. The problem will become voltage security constrained when the constraints are imposed to ensure voltage flow does not exceed chosen limit following a contingency. Lagrangian Decomposition Approach method which approximates a difficult problem of constrained optimization by a simpler method is proposed. The proposed Lagrangian Decomposition Approach is flexible in dealing with different types of constraints such as reactive power constraint, minimum up time constraint, minimum down time constraint, fuel constraint, start-up constraint and voltage constraint. A five generating unit in IEEE-14 bus network have been taken and the proposed algorithm is applied to solve it for the SCUC with voltage constraints to demonstrate the efficiency of the proposed method. In the proposed method the production cost is minimized and the voltage is maintained at a secure level in the power system. The performance of the proposed model is verified using MATLAB Software.
Authors and Affiliations
Ms. S. Adhitya, Mr. S. Purushotham
Keywords
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- EP ID EP23160
- DOI http://doi.org/10.22214/ijraset.2017.2071
- Views 270
- Downloads 5
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