Least-Cost Path Analysis and Multi-Criteria Assessment for Electric Line Access Planning Case Study on Aba-Samuel Substation, ETHIOPIA
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Date
2022-05
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Addis Ababa University
Abstract
In Ethiopia, the electric sector is already experiencing considerable rising in generation of power
from renewable energy sources like the GERD. Large amounts of new generation are expected in
the near-term future, which will require additional distribution planning to properly integrate
these resources into the existing electric power supply system. The Distribution expansion
planning has an important role in this environment to guarantee the security of the supply with
the required levels of quality and price. Therefore, the realization of new distribution lines must
be fast and accurate to avoid delays to connect new power sources and potential supply and
reliability problems. In this sense, Geographical Information Systems (GIS) can be a powerful
tool that provides decision support techniques, which enables a transparent, sustainable, faster
and cheaper planning process for in power distribution systems. Manual approach electric line
routing based on paper maps, aerial photographs and field visits can generate inconsistent results,
besides being a time consuming and intensive labor activity. The application of methodologies
based on geographic information system (GIS) combined with multi-criteria assessment (MCA)
methods are applied for this study and have proved to be less time taking and cost savings on the
electric line planning step. For this Aba-Samuel substation supply area is studied and lower length
and lower total cost route is generated via densification and intensification analysis. For route
selection, criteria’s like proximity to road, land use land cover and household density are
considered. ODK data collection method is used to collect primary data.
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Keywords
Route selection, Multi-Criteria Decision Approach