Q1: The incremental fuel costs in a system with two power plants are given by dF1 dPG1 dF1 = 32.5 +0.015 PG1 Rs/MWhr 34+0.02 PG2 Rs/MWhr dPG2 The system is running under optimal schedule with PG1 = PG2 = 100 MW. OPL If- = JPG2 0.2, find 1) the penalty factor for each power plant and 2) OPL aPG1
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- Table Q2a Time (hours) 0-6 6-12 12-14 14-18 18-24 Load (MW) 45 90 135 150 75 Referring to the Table Q2a; i) Draw the load curve and the load duration curve [Use the graph paper provided] ii) Indicate the base load and the peak load on the graph. Determine the values for both loads. iii) Choose the suitable generating units to supply the load and list their operating schedules. Later, compute the total installed capacity. iv) Calculate the load factor and the plant capacity factor. Discuss the impact on the operating schedule if the plant capacity factor increases to 0.9.A 500 MVA synchronous machine has H, = 5.6 MJ/MVA and a 1200 MVA machine has H₂ = 2.0 MJ/MVA. The two machines operate in parallel in a power station. What is the equivalent. H constant for the two, relative to a 100 MVA base?In a given system of base power of 250 MW, and bus 3 is taken as reference. The per-unit reactances are X12 = 0.2 p.u., X13 = X23 = 0. 1 p.u. The power flow in the system is given as: PF12 = 50 MW, PF13 = 150 MW, PF23 = 50 MW. Based on readings from 2 meters (not including M12 meter), M13 = 145 MW (not calibrated), and M23 = 50 MW (well calibrated), deduce the flow on line 1-2. Select one: O a. PF12 = - 47.5 MW. O b. None of these O c. PF12 = 67.5 MW. O d. PF12 = 47.5 MW. O e. PF12 =- 57.5 MW. O f. PF12 = 57 MW.
- Given two thermal generating units. For an accuracy of 1.8 MW, and two iterations were performed using the incremental losses, penalty factors, and coordination equations. The results are: P₁K = 180.5 MW, P₂ = 160.5 MW, and P,k+1 = 182 MW, P₂+1 = 162.8 MW. Then: Select one: O a. No need for a next iteration since the error is within the required accuracy. P₂k+1 = 162.8 MW. O b. Next iteration will be performed using P₁k+1 = 182 MW, O c. None of these O d. Next iteration will be performed using P₁k = 190.5 MW, P₂k+1 = 140.5 MW. e. Next iteration will be performed using P₁ = 180.5 MW, P₂k+1 = 160.5 MW. Clear my choiceIncremental fuel costs in dollars per megawatthour for a plant consisting of two units are given by:dC(P)/dP = 0.0080 P1 + 8.0dC(P)/dP = 0.0096 P2 + 6.4Assume that both units are operating at all times, that total load varies from 250 to 1250 MW, and that maximum and minimum loads on each unit are to be 625MW and 100MW respectively. Find the incremental fuel cost and the allocation of load between units for the minimum cost of various total loads.Write your answers in the given format below.State Kirchhoff’s Current Law.
- A two-core feeder 138 kilo meter long supplies a maximum current of 142 A at 400 volts. The demand is such that the copper loss per annum is that which would be produced by the full load current flowing for 4 months. The resistance of conductor 1 km long and 1mm2 section of conductor as 0.0371 ohm. The value of area of cross section is 120 mm2. The cost of energy is 15 baisa per unit. Find the power loss and Annual cost. Power Loss = kW Annual cost = RialWhat is the purpose of power factor correction to a given load? O To reduce the amount of voltage to the load. O To reduce the amount of dependence on automated machinery. O To reduce the amount of current to the load. O To reduce the amount of resistance of the load.OR e) What is BILS? Explain their significance in power system studies.
- Refer here for the specifications of the D400. a) What power output should you be able to supply from the 24V D400 at 15.4 m/s? b) If the wind drops to 2 m/s, what will the output power be? c) According to the performance graph what is the maximum power you can obtain from the 24V D400? There is a possibility of installing the turbine on top of a 20m high mast instead. Assuming that Zo=0.012, what would you expect the wind speed to be at that height? Use wind shear formula and assume Vref = 7.5 m/s at a height of Zref =10 m.A 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 MWa two Core feeder 196 km long Supplies maximum Current 133A at 40ov. The demand is such the Copper loss is that which would be per annum produced by the full load Cument and t Seeko tollowing for lo months. The resistance of Conductor ikm long and imm? section of Conelucfor of cross setionat O.03712 The Value of area as is 15 bais a IŠ 137.5 mm?. The Cost of energy per unit find the powen loss and annual Cosf