The unaccuracy of coal consumption rate characteristic curves determined from thermodynamic tests of the units has been analysed

and the participation of every unit into peak-regulating operation being considered. Adopting coal consumption rate characteristics of unit determined by real-time on-line

and combining EDTHRIT with the equivalent polyhedron method(EPM)

the optimized load distribution for peak-regulating units has been carried out. Through comparison of distribution results with real operational record

the results of optimized load distribution have been made to be more practical

econonical

and reasonable.