| 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.