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Reliability Evaluation Of Secondary Distribution System In Nigeria
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CHAPTER ONE
INTRODUCTION
1.1 BACKGROUND
Electric
power system is basically set up to supply electricity with little or
no interruptions to its customers. The number of interruptions that
occur while the system performs its intended function is part of what
determines the overall reliability of the system. The other factor that
determines its reliability is the quality of electricity delivered.
Furthermore, the capability of a power system to continuously deliver
quality electricity means that the customers are satisfied and the
electricity providers are having favorable returns on their investment
as they continue their business of supplying electricity. As electricity
consumption has become an important factor that affects the drive
needed for technology to grow and to facilitate the development of
modern society, it is very important therefore to take seriously the
issue of reliability of an electric power system.
Generation,
transmission and distribution are the three subsystems of an electric
power system. At the generating station, electricity is generated and
transmitted through the high voltage transmission lines to the
distribution substations. The distribution substation system considered
covers the electrical system between the substation fed by the
subtransmission system and the supply line to the consumers’ meters i.e.
11kV to 0.415kV transformation (Theraja and Theraja, 2005). The
distribution substations are usually sited relatively near the customers
for effective delivery, monitoring and maintenance of the substation
and the customer end and are usually referred to as secondary
distribution substation system. Distribution systems basically serve as
the link from the distribution substation to the customer. Reliable and
safe transfer of electricity to the customers covered by the
distribution area is ensured by this system and is the main subject
studied in this dissertation.
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ABSRACT - [ Total Page(s): 1 ]A power system is set up basically to meet the demands of the customers.
However, interruptions which are largely unavoidable contribute to the
unavailability of power and thus prevent power system from achieving
this. In most cases, it is the sustained interruptions that greatly
affect both the utility company and its customers. Hence, it is
necessary to find means of determining which component failure
contributes most to the unavailability of the distribution system, and
how thi ... Continue reading---
