1. What is load curve?
^{Ø }The curve drawn between the variations of load on the power station with reference to time is known as load curve.^{}
^{Ø }There are three types, Daily load curve, Monthly load curve, Yearly load curve .^{}
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2. What is daily load curve?
^{Ø }The curve drawn between the variations of load with reference to various time period of day is known as daily load curve.^{}
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3. What is monthly load curve?
^{Ø }It is obtained from daily load curve.^{}
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^{Ø }Average value of the power at a month for a different time periods are calculated and plotted in the graph which is known as monthly load curve.^{}
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4. What is yearly load curve?
^{Ø }It is obtained from monthly load curve which is used to find annual load factor.^{}
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5. What is connected load?
^{Ø }It is the sum of continuous ratings of all the equipments connected to supply systems.^{}
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6. What is Maximum demand?
^{Ø }It is the greatest demand of load on the power station during a given period.^{}
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7. What is Demand factor?
^{Ø }It is the ratio of maximum demand to connected load.^{}
Demand factor= (max demand)/ (connected load)
8. What is Average demand?
^{Ø} The
average of loads occurring on the power station in a given period (day or month or year) is known as average
demand.
Daily average demand = (no of units generated
per day) / (24 hours)
Monthly average demand = (no of units generated
in month) / (no of hours in a month) Yearly average demand = (no of units
generated in a year) / (no of hours in a year)
9. What is Load factor?
^{Ø} The
ratio of average load to the maximum demand during a given period is known as
load factor.
Load factor = (average load) / (maximum demand)
10. What is
Diversity factor?
The ratio
of the sum of individual maximum demand on power station is known as diversity
factor.
Diversity factor = (sum of
individual maximum demand)/(maximum demand).
11. What is
Capacity factor?
This is
the ratio of actual energy produced to the maximum possible energy that could
have been produced during a given period.
Capacity factor = (actual energy produced) / (maximum energy that have been produced)
12. What is
Plant use factor?
It is the
ratio of units generated to the product of plant capacity and the number of
hours for which the plant was in operation.
Units generated per annum= average
load * hours in a year
13. What is Load
duration curve?
When the
load elements of a load curve are arranged in the order of descending
magnitudes the curve then obtained is called load duration curve.