Title :
A transmission-constrained unit commitment method
Author :
Tseng, Chung-Li ; Oren, Shmuel S. ; Cheng, Carol S. ; Li, Chao-an ; Svoboda, Alva J. ; Johnson, Raymond B.
Author_Institution :
Dept. of Ind. Eng. & Oper. Res., California Univ., Berkeley, CA, USA
Abstract :
The paper presents a transmission-constrained unit commitment method using a Lagrangian relaxation approach. The transmission constraints are modeled as linear constraints based on a DC power flow model. The transmission constraints, as well as the demand and spinning reserve constraints, are relaxed by attaching Lagrange multipliers. The authors take a new approach in the algorithmic scheme. A three-phase algorithm is devised including dual optimization, a feasibility phase and unit decommitment. A test problem involving more than 2500 transmission lines and 2200 buses is tested along with other test problems
Keywords :
economics; integer programming; load dispatching; power system analysis computing; power system planning; power transmission lines; relaxation theory; scheduling; DC power flow model; Lagrange multipliers; Lagrangian relaxation approach; buses; demand constraints; dual optimization; economic dispatch; feasibility phase; linear constraints; spinning reserve constraints; three-phase algorithm; transmission constraints; transmission lines; transmission-constrained unit commitment method; unit decommitment; Capacitive sensors; Economic forecasting; Lagrangian functions; Power generation; Power system interconnection; Power transmission lines; Relaxation methods; Spinning; Testing; USA Councils;
Conference_Titel :
System Sciences, 1998., Proceedings of the Thirty-First Hawaii International Conference on
Conference_Location :
Kohala Coast, HI
Print_ISBN :
0-8186-8255-8
DOI :
10.1109/HICSS.1998.656046
