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A load center of 120 MW derives power from two power stations connected by 220 kV transmission lines of 25 km and 75 km as shown in the figure below. The three generators G1, G2 and G3 are to 100 MW capacity each and have identical fuel cost characteristics. The minimum loss generation schedule for supplying the 120 MW load is
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- P1 = 80 MW + losses
P2 = 20 MW
P3 = 20 MW - P1 = 60 MW
P2 = 30 MW + losses
P3 = 30 MW - P1 = 40 MW
P2 = 40 MW
P3 = 40 MW + losses - P1 = 30 MW + losses
P2 = 45 MW
P3 = 45 MW
- P1 = 80 MW + losses
Correct Option: A
Loss ∝ p²
Loss ∝ length For checking all options only option (a) gives less losses.
