Example 3.9. It has been desired to install a diesel power station to supply power in a suburban area having the following particulars : (i) 1000 houses with average connected load of 1.5 kW in each house. The demand factor and diversity factor being 0.4 and 2.5 respectively. (ii) 10 factories having overall maximum demand of 90 kW. (iii) 7 tubewells of 7 kW each and operating together in the morning. The diversity factor among above three types of consumers is 1.2. What should be the minimum capacity of power station?

Example 3.9. It has been desired to install a diesel power station to supply power in a suburban area having the following particulars : (i) 1000 houses with average connected load of 1.5 kW in each house. The demand factor and diversity factor being 0.4 and 2.5 respectively. (ii) 10 factories having overall maximum demand of 90 kW. (iii) 7 tubewells of 7 kW each and operating together in the morning. The diversity factor among above three types of consumers is 1.2. What should be the minimum capacity of power station?

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 2.31P: Consider two interconnected voltage sources connected by a line of impedance Z=jX, as shown in...

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Analyse several voltage and current situations in different loading scenarios in a simplified radial (transformer to consumption) medium-voltage power system example. There are only 2 nodes in the 35 kV line – node 0 from the 110/35 kV and node 1 with one consumer. Briefly reflect on the complexity of the calculations for known input or output voltage, as well as for fixed or voltage-dependent consumption in this simple power system model. Analyse and discuss the sensitivity of the voltage drop [in % of amplitude and the degrees of phase] with respect to the current level [in %] and to the power factor.
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5. Two 75 MVA 3-phase alternator are connected in parallel. The speed load characteristic of the first generator is 2% from no-load to full load while that of the second alternator is 3% from no-load to full load. The machines are fully loaded when the load is 150 MVA. If the load is reduced to 80 MVA. Calculate the load carried by each machines?
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Q.3/(¹- a. prove that the circulating current value decrease with the increase in the load between the tv transformers connected in parallel. b. Two 1-ph transformers 6000/400V, the first 200kVA and the other is 350kVA when performing the short circuit test the first need 5% of rated voltage to circulate the full-load current at 0.2 power factor while the related values for the other are 4% and 0.1, Now how will they share a load of 300kW at 0.9 power factor lagging.
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A SERIES CIRCUIT CONSISTING OF AN 80- OHM RESISTOR, A 0.30 HENRY INDUCTOR AND A 50-uf (MICROFARAD) CAPACITOR IS CONNECTED TO A 120-VOLT 60+ CYCLE SOURCE C ALCULATE THE FOLLOWINC : (A.) EQUIVALENT IMPEDANC E OF THE CKT, (B.) CURRENT (c.) VOLTAGE DROPACROSS THE SEVERAL UNITS (D.) POWER AND POWER FACTOR,