Title :
Fuel constrained unit commitment
Author :
Vemuri, S. ; Lemonidis, L.
Author_Institution :
Harris Corp., Melbourne, FL, USA
fDate :
2/1/1992 12:00:00 AM
Abstract :
The authors present a generalized method of solving the unit commitment problem with fuel constraints. The fuel-constrained unit commitment problem is decomposed into a linear fuel dispatch (FD) problem and a unit commitment (UC) problem. The FD problem optimizes system fuel cost while satisfying fuel constraints and unit fuel requirements. It also calculates the effective price at a unit. The unit fuel prices are used in the UC problem with no fuel constraints to calculate the commitment of units and the resulting unit fuel demand. The solution process iterates between UC and FD until no further cost improvement is possible. Results of a utility system with gas constraints are presented to illustrate the highlights of the proposed method
Keywords :
electric power generation; power systems; fuel-constrained unit commitment; gas constraints; linear fuel dispatch; utility system; Constraint optimization; Contracts; Cost function; Dynamic programming; Fuels; Lagrangian functions; Optimization methods; Power systems; Production systems; Scheduling;
Journal_Title :
Power Systems, IEEE Transactions on