O'Reilly logo

Electric Power Distribution Engineering, 3rd Edition by Turan Gonen

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 2

Load Characteristics

Only two things are infinite, the universe and human stupidity.And I am not so sure about the former.

Albert Einstein

2.1 Basic Definitions

Demand: “The demand of an installation or system is the load at the receiving terminals averaged over a specified interval of time” [1]. Here, the load may be given in kilowatts, kilovars, kilovoltamperes, kiloamperes, or amperes.

Demand interval: It is the period over which the load is averaged. This selected Δt period may be 15 min, 30 min, 1 h, or even longer. Of course, there may be situations where the 15 and 30 min demands are identical.

The demand statement should express the demand interval Δt used to measure it. Figure 2.1 shows a daily demand variation curve, or ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required