1. A hydroelectric station generate power from a reservoir of capacity 4 x 10° m at a head of 50 m with the overall efficiency of the plant is 70%. If the annual load factor is 40%. What is the kW rating of generators installed?
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A: Given, Average demand = 15 MW Plant capacity factor = 50 % = 0.50
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A: Givem Data: Efficiency = 0.96 * 0.86 * 0.97 density = 1000 head h = 300 m g = 9.81 Q = massflow =…
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- Question#5 Figure below shows a simple single-phase AC power system with three loads. The voltage source is V = 240 < o°v and the impedances of these three loads are z, = 10 < 30°n Z2 = 10 < 45°0 Z3 = 10 < -90°n z,The incremental cost characteristics of two generators delivering 200 MW are as follows: dF₁ = 2.0+ 0.01 P₁ and 2 = 1.6 +0.02 P₂ dP₁ dP₂ For economic operation, the generation P₁ and P₂ should beb) A power station has the following daily load cycle as Figure Q1(b) below: Time in Hours 6-8 8-12 12-16 16 20 20-24| 24–6 Load in MW 90 40 60 20 20 20 Figure Q1(b): Daily Load Cycle i) Plot the load curve i) Plot the load duration curve i) Determine energy generated per day
- A find Power of Pen stock ) B I How many Mw con be assumed the Power of generator? suggest the Power of the designQuestion A power plant has a maximum demand of 15 MW. The annual load factor is 50% and annual plant capacity factor is 40%. The operating reserve capacity isAlternator A (100 kVA, 3-f, 240 V, 60 Hz, 1800 rpm) is operating in parallel with alternator B (125 kVA, 3-f, 240 V, 60 Hz, 1800 rpm). The load of alternator A is 70 kW at 85% pf leading and the load of alternator B is 85 kW at 75% pf leading. Determine the pf of load.
- A generating station has the following daily load cycle :Time (Hours) 0-6 6–10 10–12 12–16 16–20 20-24 Load (MW) 50 60 70 60 80 50 Draw the load curve and find (i) maximum demand (ii) units generated per day (iii) average load and (iv) load factor.For a power station the yearly load duration curve is a straight line from 40,000 to 3000 kw. Tomeet the load three turbogenerators are installed. The capacity of two generators is 16,000 kweach and the 3rd is rated at 6,000 kw. Draw the annual load duration curve and determine the following the Energy generated per year, Load factor and Annual Capacity factorA generating station has the following daily load cycle: Time (hours) 0–6 Load (MW) 20 6–10 10–12 12–16 16–20 20-24 25 30 25 35 20 Construct the load curve and find (i) (11) (iii) (iv) Maximum demand Units generated per day Average load Load factor
- A generating station has a maximum capacity of 100 kW and costs $300,000. The annual fixed charges are 12% of the cost of the generating station consisting of 5% interest, 5% depreciation and 2% taxes. Find the fixed charges per kWh generated if load factor is (a) 100% and (b) 25%.A 12 V generator has an internal resistance of 0.05 ohm. Two loads are connected in parallel to its terminals, one drawing a 12 A current and the other dissipating energy at the rate of 200 W. What is the terminal voltage of the generator with this load? Ans. 0.82 voltsFor a power station the yearly load duration curve is a straight line from 32,000 to 3000 kw. To meet the load three turbo-generators are installed. The capacity of two generators is 16,000 kw each and the 3rd is rated at 4,000 kw. a. Draw the yearly duration curve b. Determine the load factor, annual capacity factor, and maximum demand