Article ID: | iaor2001274 |
Country: | Netherlands |
Volume: | 24 |
Issue: | 3/4 |
Start Page Number: | 297 |
End Page Number: | 310 |
Publication Date: | Jan 1999 |
Journal: | Decision Support Systems |
Authors: | Oren Shmuel S., Johnson Raymond B., Svoboda Alva J., Tseng Chung-Li, Cheng Carol S., Li Chao-an |
Keywords: | lagrange multipliers |
This paper presents a transmission-constrained unit commitment method using a Lagrangian relaxation approach. Based on a DC power flow model, the transmission constraints are formulated as linear constraints. The transmission constraints, as well as the demand and spinning reserve constraints, are relaxed by attaching Lagrange multipliers. A three-phase algorithmic scheme is devised including dual optimization, a feasibility phase and unit decommitment. A large-scale test problem with more than 2200 buses and 2500 transmission lines is tested along with other test problems.