2.3 Assume that all three thermal units described below are running. Find the economic dispatch schedules as requested in each part. Use the method and starting conditions given. Unit Data Minimum Maximum Fuel Cost (MW) (MW) ($/MBtu) H, = 225+8.4P, +0.0025P, 45 350 0.80 H, =729 +6.3P, +0.0081P 45 350 1.02 H, = 400 +7.5P +0.0025P- 47.5 450 0.90 Use in derivative of the gradient method to find the economic schedule for a total demand of 500 MW, assuming the initial conditions (i.e., loadings) on the three units are and P = P =100MW P= 300MW