Time 1 2 3 5 6 7 |8 9 10 11 12 (A.M) Load (kw) | 220 200 190 180 180 200 300 410 560 590 610 | 605 Time 1 2 3 4 7 8 10 11 12 (P.M) Load (kw) 500 620 670 760 1000 930 900 870 850 |720| 600 | 380 This load is carried out by one 1200 kw steam turbo generating unit which has a steam demand represented by the equation m;= 907.2+4.99 L (kg/hr) Where; L in kw Draw the load curve and find: i. The load factor ii. Capacity factor Rate of steam used per day jii. 4)

Time 1 2 3 5 6 7 |8 9 10 11 12 (A.M) Load (kw) | 220 200 190 180 180 200 300 410 560 590 610 | 605 Time 1 2 3 4 7 8 10 11 12 (P.M) Load (kw) 500 620 670 760 1000 930 900 870 850 |720| 600 | 380 This load is carried out by one 1200 kw steam turbo generating unit which has a steam demand represented by the equation m;= 907.2+4.99 L (kg/hr) Where; L in kw Draw the load curve and find: i. The load factor ii. Capacity factor Rate of steam used per day jii. 4)

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.16P: A single-phase, 120V(rms),60Hz source supplies power to a series R-L circuit consisting of R=10 and...

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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.)
A synchronous generator has been synchronized to an infinite grid of 13.8 kV and 60 Hz. The generator prime mover C/C is such that the no-load frequency is 62.5 Hz and the power slope is 1 MW/Hz. The AVR C/C (The reactive power against the terminal voltage C/C) is such that the zero reactive power voltage is 14.6 kV, while the slope is 0.4 MVAR/kV. Calculate (a) the kVA loading of the generator and its power factor. (b) the settings of the prime mover and AVR such that the generator delivers 3 MW at 0.85 lagging power factor.
The per unit impedance of a generator on a 60 MVA, 20 kV base is j0.09 p.u. The per unit impedance to a 100 MVA, 20 kV base will be (a.) j0.054 p.u. (c.) j 1.5 p.u. (b.) j0.54 p.u. (d.) j0.15 p.u.
For a power station the yearly load duration curve is a straight line from 50,000 to 4000 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 7,000 kw. Determine the following a) Load factor. b) Capacity factor. c) Maximum demand.
The synchronous generator of thermal power station will have a large number of poles True False
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The peak load on a 50 MW power station is 39 MW. It supplies power through for transformers whose connected loads are 17, 12,9 and 10 MW. The maximum demands on these transformers are 15, 10, 8 and 9 MW respectively. The annual load factor is 50% and the plant is operating for 65% of the period in a year. 102. The average load on the station is (A) 50000 kW (C) 39000 kW (B) 19500 kW (D) 48000 kW. 103. The energy supplied per year is (A) 438 x 106 kWh (C) 170.82 x 106 kWh (B) 341.64 x 106 kWh (D) 420.48 x 106 kWh.
A power station consists of two synchronous generators A & B of ratings 250 MVA and 500MVA with inertia 1.6 pu and 1.0 pu respectively on their own base MVA ratings. The equivalent pu inertia constant for the system on 100 MVA common base is:- (a) 2.6 (b) 0.615 (c) 1.625 (d) 9.0
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 KVAR
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