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Power Station Load Calculations

The document contains 5 problems related to power generation and load analysis. Problem 1 asks to calculate the reserve capacity, daily energy produced, and maximum daily energy for a generating station given its maximum demand, load factor, plant capacity factor, and plant use factor. Problem 2 asks to calculate the maximum demand and connected load for different types of loads given the maximum demand, diversity factor, and demand factor for each. Problem 3 asks to plot a load curve and calculate various demand and diversity factors for 3 consumers over a daily period. Problem 4 asks to calculate the daily load factor, plant capacity factor, and daily fuel requirement given the daily load cycle and generation capacity of a power station. Problem 5 asks to calculate the annual load factors and plant

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Abreu Miguel Liliano Liliano
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326 views2 pages

Power Station Load Calculations

The document contains 5 problems related to power generation and load analysis. Problem 1 asks to calculate the reserve capacity, daily energy produced, and maximum daily energy for a generating station given its maximum demand, load factor, plant capacity factor, and plant use factor. Problem 2 asks to calculate the maximum demand and connected load for different types of loads given the maximum demand, diversity factor, and demand factor for each. Problem 3 asks to plot a load curve and calculate various demand and diversity factors for 3 consumers over a daily period. Problem 4 asks to calculate the daily load factor, plant capacity factor, and daily fuel requirement given the daily load cycle and generation capacity of a power station. Problem 5 asks to calculate the annual load factors and plant

Uploaded by

Abreu Miguel Liliano Liliano
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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EXERCISE-1

1. 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 (i) the reserve capacity of the
plant (ii) the daily energy produced and (iii) maximum
energy that could be produced daily if the plant while
running as per schedule, were fully loaded.
Ans.: 5 MW, 360 MWh, 500 MWh/day
2. A power supply is having the following loads:
Type of load Max. demand(kW) Diversity of group Demand factor

Domestic 1500 1·2 0·8

Commercial 2000 1·1 0·9

Industrial 10,000 1·25 1

If the overall system diversity factor is 1.35, determine


(i) the maximum demand and (ii) connected load of each
type. Ans.: 10,000, 2250, 2444, 12,500 kW
3. The daily demands of three consumers are given below:
Time Consumer 1 Consumer 2 Consumer 3
12 midnight to 8 A.M. No load 200 W No load
8 A.M. to 2 P.M. 600 W No load 200 W
2 P.M. to 4 P.M. 200 W 1000 W 1200 W
4 P.M. to 10 P.M. 800 W No load No load
10 P.M. to midnight No load 200 W 200 W

1
Plot the load curve and find (i) maximum demand of
individual consumer (ii) load factor of individual consumer
(iii) diversity factor and (iv) load factor of the station.
Ans.: DF = 1.25, LF= 29.1%
4. A power station has a daily load cycle as under:
260 MW for 6 hours; 200 MW for 8 hours; 160 MW for 4
hours; and 100 MW for 6 hours.
If the power station is equipped with 4 sets of 75 MW each,
calculate (i) daily load factor (ii) plant capacity factor and
(iii) daily requirement if the calorific value of oil used were
10,000 kcal/kg and the average heat rate of station were
2860 kcal/kWh. Ans.: 70.5%, 61.1 %, 1258.4 tons
5. A base load station having a capacity of 18 MW and a
standby station having a capacity of 20 MW share a common
load. Find the annual load factors and plant capacity factors of
two power stations from the following data:
Annual standby station output = 7·35 × 106 kWh
Annual base load station output = 101·35 × 106 kWh
Peak load on standby station = 12 MW
Hours of use by standby station/year = 2190 hours
Ans.: 28%, 4.2%, 64.2%

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