Concept explainers
Videos
Given two generating units with their respective variable operating costs as
Want to see the full answer?
Check out a sample textbook solution
Chapter 6 Solutions
Power System Analysis and Design (MindTap Course List)
- Borduria Generation owns three generating units that have the following cost functions: Unit A: 15 + 1.4 PA + 0.04 P2 A $/h Unit B: 25 + 1.6 PB + 0.05 P2 B $/h Unit C: 20 + 1.8 PC + 0.02 P2 C $/h How should these units be dispatched if Borduria Generation must supply a load of 350 MW at minimum cost?arrow_forwardelectrical engineering department plzz solvearrow_forwardA Single Area consists of 3 generating units (G1/G2/G3) with the following characteristics: G1: 425 MVA rating, R1 = 0.015 pu (on the 425 MVA base), initial output P1 = 300 MW. G2: 300 MVA rating, R2 = 0.02 pu (on the 300 MVA base), initial output P2 = 200 MW. G3: 300 MVA rating, R3 = 0.03 pu (on the 300 MVA base), initial output P3 = 200 MW. The frequency of the system is 60 Hz. Assuming D = 0 pu and using a common base of 1000 MVA, what is the new steady-state frequency for a load increase of 100 MW? Select one: O a. None of these O b. 59.96 Hz O c. 58.75 Hz O d. 59.88 Hzarrow_forward
- two generators supplying a load. Generator I has a no-load frequency of 62.5 Hz and a slope Sp1 of I MW/Hz. Generator 2 has a no-load frequency of 62.0 Hz and a slope sp2 of I MW/Hz. The two generators are supplying a real load totaling 2.5 MW at 0.8 PF lagging. (a) At what frequency is this system operating, and how much power is supplied by each of the two generators? (b) Suppose an additional I-MW load were attached to this power system. What would the new system frequency be, and how much power would Gl and G2 supply now? Generator 1 VT V2 Generator 2 VTí KVAR KVARarrow_forwardA Single Area consists of 3 generating units (G1/G2/G3) with the following characteristics: G1: 250 MVA rating, R1 = 0.02 pu (on the 250 MVA base), initial output P1 = 200 MW. G2: 350 MVA rating, R2 = 0.015 pu (on the 350 MVA base), initial output P2 = 300 MW. 0.03 pu (on the 300 MVA base), initial output P3 = 150 MW. G3: 300 MVA rating, R3 = The frequency of the system is 60 Hz. Assuming D = 1 pu on a common base of 1000 MVA, what is the new generation output for G3 for a load increase of 75 MW? Select one: O a. 190.55 MW O b. None of these O c. 203.38 MW d. 166.01 MWarrow_forwardI need the answer as soon as possiblearrow_forward
- 6. If a power system has 10,000 kVA capacity, operating at 0.7 lagging power factor and cost of synchronous capacitors to correct the p.f is $10.5/kVA.Determine the cost involved and also required leading reactive power to increase the power factor to (a) 0.85 lagging p.farrow_forwardA generating station has a connected load of (45MW) and a maximum demand is (15MW). with average demand of (6300KW), the value of demand * factor and load factor are 0.55, 1.5 0.33 ,0.42 O 3,0.14 Oarrow_forwardA generating station having two thermal generating units shown below with minimum and maximum generations of 45 MW,60 MW and 600 MW, 800 MW respectively, have the Gen-2 following cost equations. Gen-1 C, = 0.065 Pc1? + 25 Pc1 + 400 OMR / Hr C2 = 0.082 Pc2² + 8 Pc2 + 320 OMR / Hr Calculate the saving when they share load as per economic load dispatch compared to load sharing proportional to their maximum generation. Neglect line losses. 280 MW 400 MWarrow_forward
- The yearly load duration curve of a certain power station can be approximated as a straight line; the maximum and minimum loads being 40 MW and 10 MW respectively. To meet this load, three turbine generator units, two rated at 20 MW each and one at 10 MW are installed. Draw the load duration curve and determine: (i) Installed capacity (ii) Plant capacity factor (iii) kWh output per year (iv) Load factor.arrow_forwardSolve it clearly please with clearly stepsarrow_forwardSolve it fast plzarrow_forward
Power System Analysis and Design (MindTap Course ...Electrical EngineeringISBN:9781305632134Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. SarmaPublisher:Cengage Learning