Transcript ch05.ppt

CHAPER 5
Electrical Energy Generation,
Transmission, and Storage
Energy and the Environment
James A. Fay / Dan S. Golomb
Copyright © 2011 by Oxford University Press, Inc.
FIGURE 5.1 A typical diurnal demand for electric power has an early morning minimum and a late afternoon maximum, with the former
defining the base load demand that is met by continuously operating plants.
Energy and the Environment
James A. Fay / Dan S. Golomb
Copyright © 2011 by Oxford University Press, Inc.
FIGURE 5.2 A magnetized needle in a magnetic field requires a counterclockwise torque to hold it in place at an angle θ.
Energy and the Environment
James A. Fay / Dan S. Golomb
Copyright © 2011 by Oxford University Press, Inc.
FIGURE 5.3 (a) A wire carrying a current I and moving perpendicular to a magnetic field B at a speed V is subject to a restraining
force F and experiences an electric field E. (b) A sketch of a simple armature circuit showing how the current loop is connected to
slip rings that deliver the current to an external circuit.
Energy and the Environment
James A. Fay / Dan S. Golomb
Copyright © 2011 by Oxford University Press, Inc.
FIGURE 5.4 The efficiency of energy-efficient induction motors as a function of motor power. (Data from Andreas, John C.
Energy-Efficient Electric Motors, 2d ed. New York: Marcel Dekker, 1992.)
Energy and the Environment
James A. Fay / Dan S. Golomb
Copyright © 2011 by Oxford University Press, Inc.
FIGURE 5.5 A sketch of the elements of an electric power system for generating, transmitting, and distributing power to end users.
Energy and the Environment
James A. Fay / Dan S. Golomb
Copyright © 2011 by Oxford University Press, Inc.
FIGURE 5.6 The electric capacitor (a) and inductor (b) are devices for storing electrical energy.
Energy and the Environment
James A. Fay / Dan S. Golomb
Copyright © 2011 by Oxford University Press, Inc.