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GIS as DSS in
power distribution management |
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Kamal
Jain,
Rahul Goel and Charu Gupta
Geomatics Engineering
Section, Department of
Civil Engineering
Indian Institute of Technology,
Roorkee-247667, U.A.,
India
akjainfce@iitr.ernet.in |
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In
the last few decades, the industry
has been developing transmission
systems to meet the ever increasing
demand for electricity. But,
finding suitable sites for new
transmission lines has become
difficult due to the development
of rural areas and the growing
concern over environmental issues.
GIS could be of immense help
to planners and engineers, more
so in this context, in the selection
of suitable areas, optimum path
finding, profile analyses, engineering
design of towers and wires and
efficient cost estimation. |
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The overwhelming
amount of information (Igbokwe,
et .al 2005) on electric poles,
circuits, transformers etc can be
better organised on a computer system
linking the database to geographic
maps within a relatively short time.
These various types of information
systems that support decision-making
are collectively referred to as
DSS. Implementation of GIS as DSS
can make information up to date
and accurate. GIS can effectively
manage the spatial and non-spatial
electricity distribution information
as well as information describing
the attributes of each customer
such as name, address, location
and electricity use.
1.1 Objective
The primary objective of
the study undertaken is to implement
GIS in the power sector for power
distribution management. Some of
the key tasks, which are planned
to be achieved through GIS, are:
• power pilferage analysis
by determining the amount of power
consumed by a particular consumer
against the load sanctioned
• information extraction from
every electric pole and determining
its location on the landbase
• to trace the entire path
from consumer up to the feeder electric
pole
• customer billing analysis
• customer complaint analysis
• network switching
2 Problem
analysis
Power utilities in India are under
pressure to slash charges and improve
quality and reliability (Sharma
M., Khare M., 1999). Though the
distribution and transmission systems
have witnessed considerable technical
development and capital investment,
the distribution and to some extent,
the sub-transmission systems have
been neglected and have suffered
due to poor operating efficiencies
leading to financial losses and
cynical customer perception. Distribution
systems have suffered mainly from
the following:
• unbalanced load flow
• poor voltage regulation
• high level of technical
(peak power / energy) losses
• conductor heating / equipment
damages
• very high unaccounted energy
losses
[20-40% as against international
standards of 8-10%]
Improving the performance of distribution
systems to meet required targets
hinges on selection of cost-effective
technologies and operating practices.
The systems tend to be extensive
with a long life span for conductors
and plant. It is not sufficient
to analyse how a particular portion
of the network may be modified to
improve its performance today. It
is imperative to investigate long-term
solutions especially so, since the
implementation of the solutions
will also entail decisions involving
large-scale investments (Arbea J.P.,
2002). A power distribution software
based on an integration of dedicated
GIS + public works and engineering
analysis (viz., network analysis)
solution will provide the right
kind of approach for addressing
the issues that have been raised
above. The advantages of using a
dedicated GIS + public works approach
are manifold:
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