Energy and Power Engineering

Volume 5, Issue 4 (July 2013)

ISSN Print: 1949-243X   ISSN Online: 1947-3818

Google-based Impact Factor: 1.10  Citations  h5-index & Ranking

Lagrangian Relaxation-Based Unit Commitment Considering Fast Response Reserve Constraints

Full-Text HTML  Download Download as PDF (Size: 113KB)  PP. 970-974  


Unit commitment (UC) is to determine the optimal unit status and generation level during each time interval of the scheduled period. The purpose of UC is to minimize the total generation cost while satisfying system demand, reserve requirements, and unit constraints. Among the UC constraints, an adequate provision of reserve is important to ensure the security of power system and the fast-response reserve is essential to bring system frequency back to acceptable level following the loss of an online unit within a few seconds. In this paper, the authors present and solve a UC problem including the frequency-based reserve constraints to determine the optimal FRR requirements and unit MW schedules. The UC problem is solved by using Lagrangian Relaxation-based approach and compared with the actual system schedules. It is observed that favorable reserve and unit MW schedules are obtained by the proposed method while the system security is maintained.

Cite this paper

C. S. Chuang and G. W. Chang, "Lagrangian Relaxation-Based Unit Commitment Considering Fast Response Reserve Constraints," Energy and Power Engineering, Vol. 5 No. 4B, 2013, pp. 970-974. doi: 10.4236/epe.2013.54B186.

Copyright © 2018 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.