Abstract
This paper proposes a hybrid Lagrangian relaxation (LR)-secant method-invasive weed optimisation (IWO) for solving profit-based unit commitment (PBUC) problem. The PBUC problem is one of the important optimisation problems in deregulation. The objective of generation companies (GENCOs) in deregulated environment is to schedule the generating units for maximising the profit. Three stages are involved in the suggested method. The unit commitment problem is solved by Lagrangian relaxation (LR) for a given forecasted power demand, reserve and electricity price by incorporating various constraints, then optimal output powers for committed units are determined by secant method and finally IWO is applied to update the Lagrangian multipliers based on the duality gap between the primal cost and duality cost. It has been tested for various test cases such as 3 units, 10 units and 20 units system to prove the applicability of the proposed method. Simulation results have been compared with existing methods available in the literature. A comparison of the simulation results of the recommended method with the results of previous published methods shows that this method provides a qualitative solution.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: International Journal of Power and Energy Conversion
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.