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The document outlines various calculations and analyses related to power generation economics, including load factors, utilization factors, and load curves for different power stations. It presents scenarios with specific maximum demands and load profiles, requiring the plotting of curves and selection of generator units. Additionally, it addresses the necessary reserve plants and capacity factors for efficient operation.

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Ahmed Mohamed
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127 views2 pages

Sheet

The document outlines various calculations and analyses related to power generation economics, including load factors, utilization factors, and load curves for different power stations. It presents scenarios with specific maximum demands and load profiles, requiring the plotting of curves and selection of generator units. Additionally, it addresses the necessary reserve plants and capacity factors for efficient operation.

Uploaded by

Ahmed Mohamed
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Sheet (2)

Economics of Power Generation


1) The maximum demand of a power station is 96000 kW and daily load curve
is described as follows

(i) Determine the load factor of power station. (ii) What is the load factor of standby
equipment rated at 30 MW that takes up all load in excess of 72 MW ?
Also calculate its use factor.
2) An electrical system experiences linear changes in load such that its daily load
curve is defined as follows :
Time 12PM 2AM 6AM 8AM 12AM 12.30 1PM 5PM 6PM 12PM
PM
Load 24 12 12 60 60 48 60 60 84 24
MW
(i) Plot the chronological and load duration curve for the system.
(ii) Find the load factor
(iii) What is the utilisation factor of the plant servingthis load if its capacity
is 120 MW.
3)A generating station has a maximum demand of 5000 kW, and the daily load on
the station is as follows

(i) Draw the load curve. (ii) Draw the load duration curve.
(iii) Select the size and number of generator units. (iv) What reserve plant would be
necessary? (v) Load factor (vi) Plant capacity factor
4) The yearly duration curve of a certain plant can be considered as a straight line
from 300 MW to 80 MW. Power is supplied with one generating unit of 200 MW
capacity and two units of 100 MW capacity each. Determine :
(i) Installed capacity (ii) Load factor (iv) Maximum demand (v) Utilization factor
5) The following load is to be supplied by a power station :
Load (MW) : 30 90 60 100 50
Time (hours) : 0–6 6–12 12–14 14–18 18–24
Sheet (2)
Economics of Power Generation
(i) Draw the load curve.
(ii) Draw the load duration curve.
(iii) Choose suitable generating units to supply the load.
(iv) Calculate the load factor.
(v) Calculate plant capacity factor
.

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