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2.1 INTRODUCTION
The purpose of an electrical power system is to generate
and supply electrical energy to consumers. The system
should be designed and managed to deliver this energy
to the utilisation points with both reliability and
economy. Severe disruption to the normal routine of
modern society is likely if power outages are frequent or
prolonged, placing an increasing emphasis on reliability
and security of supply. As the requirements of reliability
and economy are largely opposed, power system design
is inevitably a compromise.
A power system comprises many diverse items of
equipment. Figure 2.2 shows a hypothetical power
system; this and Figure 2.1 illustrates the diversity of
equipment that is found.
تحقیق در مورد Fundamentals of Protection Practice