TUTORIAL PROBLEMS 1. A generating station has a connected load of 40 MW and a maxímum demand of 20 MW: the units generated being 60 x 10°. Calculate (/) the demand factor (1) the load factor. (0 0-5 () 34 25%|
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Q: Ex. 316. Determine the closed-loop steady-state error given a R(s) input, (b) unit ramp input, E (s)…
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Q: Ex. 316. Determine the closed-loop steady-state error given a R(s) + E(s) ->0----->| G(s) |---+--->…
A: The solution is given below
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Q: Ex. 318. Determine the closed-loop steady-state error given a R(s) ----->0-----> G(s) + E(s) C(s)…
A: The solution is given below
Q: a) Two thermal generator units have the following incremental cost curves then determine the…
A: The incremental cost functions are given as On solving equations (1) and (2)
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Q: Ex. 318. Determine the closed-loop steady-state error given a R(s) input, (b) unit ramp input,…
A: This is a basic problem on steady state error. The solution is given below
Q: Calculate for full-load and unity p.f., the natural period of oscillation of a 50-Hz, 10,000-kVA,…
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Q: PA FAB DA = 2000 MW DB = 1000 MW Figure P6.2 Two-bus power system for Problems 6.2, 6.3, 6.4, 6.10…
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Q: Athree-phase, 60-Hz, 500-MVA, 11.8-kV, 4-pole steam turbine-generating unit has an H constant of 6…
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Q: 6.5 Consider the three-bus power system shown in Figure P6.5 The table below shows the data about…
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Q: A 2-pole, 50 Hz, 11 kV synchronous generator with a rating of 120 MW and 0.87 lagging power factor…
A: Question: A 2-pole, 50 Hz, 11 kV synchronous generator with a rating of 120 MW and 0.87 lagging…
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A: A control system with Negative feedback which is shown in the figure. Calculate 1. the position…
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Q: If the Reactance of the cylindrical rotor machine connected to an infinite bus bar is double that of…
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Q: A constant losses can be considered equal to input to a machine at no-load. * True False
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Q: The fuel cost curve of two generator are given under C1 = 00+ 45 P +01 P;? C) = 2000 + 43 P + 0.003…
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Q: The initial load angle at steady-state stability is δ0 and the related mechanical power, P0. With…
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Q: The following test results are obtained for a 3ph, 25 kV, 750 MVA, 50 Hz, 3600rpm, star-connected…
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Q: Explain all the additional components in Natural gas based Combined Cycle power plants which enhance…
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Q: a) The following information is given for a 34.5 kW, 23 shunt field, series field, diverter and…
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Q: 1. Define Pitch Factor /Distribution Factor and present the formula to calculate. 2. Draw the
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Q: 5.115. A star-connected synchronous machine, with Z, 1+j 102 per phase, is synchronized with an…
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Q: Question 4 (Mapped to ILO1) A power generating plant consists of two turbo-alternator units whose…
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Q: 5- Calculate the reactance voltage for a machine which runs at 900rpm number of commutator segments…
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Q: A three-phase synchronous generator is rated 60 MVA, 11 kV. It has an armature resistance ra = 0.1…
A: a Choosing Vb=11 V and MVAb=60 MVAZd=0.1+j1.65 pu=1.653∠86.53V=1111= 1 per…
Q: (a) A power generating plant consists of two multiple-valve generating units whose fuel cost…
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Q: 1- Static synchronous compensator (STATCOM) for powe factor improvement. 2- What is penalty factor?…
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Q: Incremental fuel cost is the derivation of output power with respect to fuel cost True False
A: fuel cost can be written in terms of output power with some constants. incremental fuel cost is the…
Q: Ex. 317. Determine the closed-loop steady-state error given a R(s) input, (b) unit ramp input,…
A:
Q: (a) A power generating plant consists of two multiple-valve generating units who fuel cost functions…
A:
Q: Given two thermal generating units. For an accuracy of 1.8 MW, and two iterations were performed…
A: First iteration results P1k =180.5 MW P2k =160.5 MW second iteration results P2k+1 =162.8 MW P1k+1…
Q: Ex. 317. Determine the closed-loop steady-state error given a R(s) + E(s) >0----->| G(s) 1---+--->…
A: The solution is given below
Q: 7. Upper limit of voltage on transmission line is limited by corona discharge because A. PUD…
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- Consider two interconnected voltage sources connected by a line of impedance Z=jX, as shown in Figure 2.27. (a) Obtain expressions for P12 and Q12. (b) Determine the maximum power transfer and the condition for it toThe voltage v(t)=359.3cos(t)volts is applied to a load consisting of a 10 resistor in parallel with a capacitive reactance XC=25. Calculate (a) the instantaneous power absorbed by the resistor, (b) the instantaneous power absorbed by the capacitor. (c) the real power absorbed by the resistor, (d) the reactive power delivered by the capacitor, and (e) the load power factor.A single-phase, 120V(rms),60Hz source supplies power to a series R-L circuit consisting of R=10 and L=40mH. (a) Determine the power factor of the circuit and state whether it is lagging or leading. (b) Determine the real and reactive power absorbed by the load. (c) Calculate the peak magnetic energy Wint stored in the inductor by using the expression Wint=L(Irms)2 and check whether the reactive power Q=Wint is satisfied. (Note: The instantaneous magnetic energy storage fluctuates between zero and the peak energy. This energy must be sent twice each cycle to the load from the source by means of reactive power flows.)
- 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.Suppose two generators supplying a load. Generator-1 has a no-load frequency of 61.5 Hz and a slopesp1 of 1 MW/Hz. Generator-2 has a no-load frequency of 62 Hz and a slope sp2 of 1MW/Hz. The twogenerators are supplying a real load totaling 2.5 MW at 0.8 PF lagging. Draw the resulting systempower-frequency or house-diagrams. Determine (a) at what frequency is the system operating, andhow much power is supplied by each of the generators? (b) if an additional 0.75-MW load wereattached to this power system. What would the new system frequency be, and how much powerwould the each generator supply now? (c) with the system in the configuration described in part (b),what will the system frequency and generators power be if the governor set points on generator-1 areincreased by 0.5 Hz?A generating station has a maximum demand of 25,000 kW. Calculate the cost per unit generatedfrom the following data: Capital cost = P 120M; Annual load factor = 45%; Annual cost of fuel and oil = P6.5M ; Taxes, wagesand salaries etc. = P6M and Interest and depreciation = 13%
- q1: Discussion of power quality aspects that need to be considered before installing the power factor correction unitPower system planning can be done only after conducting a. Power flow analysis b. Economi dispatch c. Generation flow analysis d. Unit commitment. A system consists of two plants connected by a tie and a load is located at plant two. When 100MW are transmitted from plant one a loss of 10MW takes place on the T-line . Determine the generating schedule at both the plant and the power received by the load when λ for the system is GHC 25 per megawatt hour and the incremental fuel cost are given by the equation dF1dP1=0.031P1 + 17 GHC/ MWh ; dF2dP2=0.06P2 + 19 GHC/MWh
- Incremental 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.Pls. Answer thank you! A generating station has a maximum demand of 25MW, a load factor of 60%, a plant capacity factor of 50% and a plant use factor of 72%. Find the reserve capacity of the plant in MW.The fuel cost functions in OMR/hr. of two thermal plants are C1 = 320 + 6.2 P1 + 0.004 P12 C2 = 200 + 6.0 P2 + 0.003 P22 Where P1 and P2 are in MW.Plant outputs are subject to the following limits (in MW) neglecting the line losses. 50 ≤ P1 ≤ 250 50 ≤ P2 ≤ 350 (a) By using iterative method determine optimal scheduling of generation and the total cost in OMR/ hr. for the total load of 412.35 MW.Start with an initial estimate of λ = 7.0 OMR/MWh. (b) Find the saving in OMR/ hr. when the generators share load equally