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Reliability Evaluation Of Secondary Distribution System In Nigeria
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In terms of reliability evaluation
and modeling, generating stations have justifiably received more
attention than the other systems because they are individually capital
intensive. In addition, in the event of generation inadequacy and
generation loss there is usually widespread catastrophic effects on the
society and environment. It impacts directly on the whole system and
even distribution system will not be able to perform its duty because
there will be no electricity to supply to customers. However based on
published research work and studies, distribution systems have begun to
receive moderate attention compared to past decades. In most cases, when
there is disturbance in form of failure which results in outages in the
distribution system it affects only the localized territory. Only in
few cases does the fault move up in to the system largely as a result of
protection failure. Analysis of the customer failure statistics of most
electricity companies shows that the distribution system makes the
greatest individual contribution to the unavailability of supply to a
customer (Gonen, 2014). In effect, the purpose of establishing
generating stations and the hurdles overcome to transmit electricity is
defeated when it does not get to the user end as a result of
distribution system failure. This makes distribution system to be highly
important. The distribution systems account for up to 90% of all
customer reliability problems, improving distribution reliability is the
key to improving customer reliability (Billinton and Jonnavithula,
1996).
Meanwhile, as the main aim of a power system is to meet the
electricity needs of the customers and this can only be achieved when
the components making up the system are performing their intended
function properly for as long as the system is in operation, it is
important that the demand for electricity and its supply be properly
viewed and included in setting up the system. Therefore, due to its high
impact on the cost of electricity and its corresponding effect on
customer satisfaction, distribution reliability is very important.
However, as in any other viable engineering system, there are challenges
that face power distribution system which tends to make the system
unreliable. One of these is the issue of serving its main purpose which
is to supply quality electricity with little or no interruptions. This
problem is inevitable in power systems across the world but the way they
are managed is what makes it different from country to country. For
instance in the United States, there is nearly an uninterrupted delivery
of quality electricity to its numerous customers which makes it rank
among the most dependable in the world. It is in management of the power
systems that reliability evaluation becomes significant. Reliability
evaluation does not in any way make a system more reliable but it helps
in system planning and identification of weak components.
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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---
