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The incremental cost curves in Rs/ MW hr for two generators supplying a common load of 700 MW are shown in the figures. The maximum and minimum generation limits are also indicated. The optimum generation schedule is:
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- Generator A: 400 MW, Generator B: 300 MW
- Generator A: 350 MW, Generator B: 350 MW
- Generator A: 450 MW, Generator B: 250 MW
- Generator A: 425 MW, Generator B: 275 MW
Correct Option: C
Maximum incremental cost in Rs/M Whr for generator A = 600 (at 450 MW)
Minimum incremental cost in Rs/MWhr for generator B = 650 (at 150 MW)
As maximum value of increamental cost of A is less than minimum value of B,
∴ Generator A will operate at its maximum output 450 MW and B at (700 – 450) MW = 250 MW
