Title :
New concepts of costs optimization for thermal scheduling
Author :
Hamdan, Norhamimi ; Ahmed, Musse Mohamud ; Hassan, Ismail
Author_Institution :
Fac. of Electr. Eng., Kolej Univ. Teknikal Kebangsaan Malaysia, Malaysia
Abstract :
An optimal solution to the unit commitment (UC) and economic load dispatch (ELD) problems lead to remarkable saving in the power system operational cost. UC and ELD main problems are to find the maximum profit and fast computation simulation time for the scheduling program. Lagrangian relaxation (LR) has become one of the best solution methods in solving the UC and ELD problems. The approach is claimed to be more efficient and easier than other methods in solving large-scale problems. When applying LR, the dual function needed to be updated at the higher level. Lately, bundling method (BM) is one of the best solution methods to Lagrangian dual problem. This paper presents LR technique, BM and interior point method for solving the UC and ELD problems. It will also explore the best possible way of updating Lagrangian multipliers with minimum computation time using fast programming techniques.
Keywords :
cost reduction; optimisation; power generation dispatch; power generation economics; power generation scheduling; power system analysis computing; thermal power stations; Lagrangian dual problem; Lagrangian multiplier; Lagrangian relaxation; bundling method; economic load dispatch; fast programming techniques; interior point method; large-scale problem; optimal solution; power system operational cost saving; scheduling program; unit commitment; Cost function; Dynamic programming; Fuels; Integer linear programming; Lagrangian functions; Linear programming; Power generation; Power generation economics; Risk analysis; Uncertainty;
Conference_Titel :
Power Engineering Conference, 2003. PECon 2003. Proceedings. National
Print_ISBN :
0-7803-8208-0
DOI :
10.1109/PECON.2003.1437443