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Chapter: Power System Operation and Control - Introduction

Important Terminalogies and Formulas - Power System Operation and Control

Power System Operation and Control - Introduction - Important Terminalogies and Formulas - Power System Operation and Control

IMPORTANT TERMINALOGIES

 

Connected load

 

Ø   It is the sum of continuous ratings of all the equipments connected to supply systems.

 

Maximum demand

 

Ø   It is the greatest demand of load on the power station during a given period.

 

Demand factor

 

It is the ratio of maximum demand to connected load.

Demand factor= (max demand)/ (connected load)

 

Average demand

 

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)

 

Load factor

 

The ratio of average load to the maximum demand during a given period is known as load factor.

Load factor = (average load)/ (maximum demand)

 

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).

 

Capacity factor

 

Ø   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)

 

Plant use factor

 

Ø   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

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