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Wednesday, November 29, 2017

Power system optimization and Problem on Economic Load Dispatch

Problem-1: Economic Load Dispatch

The Data for 3 generating units is given in table, find the economic load dispatch schedule for a load of 850 MW.




Solution: The production cost F for each unit is calculated by multiplying H with Fuel cost



From the Lagrangian function the first derivative of the F with respect to P is equal to λ so equating the dF/dP=λ



Note that all constraints are met; that is, each unit is within its high and low limit, and the total output when summed over all three units meets the desired 850 MW total.

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