
37-1
37.1 Introduction
e electric power system is one of the largest and most complex man-made systems, encompassing
billions of components, tens of millions of kilometers of transmission lines, and thousands of genera-
tors serving a diverse, huge number of consumers. e function of a power system is to generate electric
energy economically and with the minimum ecological disturbance and to transfer this energy over
transmission lines and distribution networks with the maximum eciency and reliability for delivery
to customers at virtually xed voltage and frequency. e conventional power system structure is highly
hierarchical where power ...