GATE EE 2021 Set 1 — Question 20
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Power Systems → Economic Operation & Compensation → Economic Load Dispatch
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Question
Two generators have cost functions and . Their incremental-cost characteristics areThey need to deliver a combined load of 260 MW. Ignoring the network losses, for economic operation, the generations and (in MW) are
Correct answer
(B) P₁ = 160, P₂ = 100
Solution
For economic operation when network losses are ignored, the incremental fuel costs of the generators must be equal:The total load requirement is:Subtracting equation (1) from (2):Substituting into equation (2):Thus, the generations are MW and MW. Correct option is (B).
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