GIS-based Three Level Method for Determination of Route Alignment of 33 kV Lines in Nepal
Authors: Binay Paudyal, Neha Joshi, Bibek Rai, Ashish Regmi, Pravakar Khanal, Bishnu Prasad Neupane, Prashant Tiwari, Dayasagar Niroula, Prasant Basnet, Ravi Raj Shrestha, Saroj Ghimire, Niroj Karmacharya, Nawa Raj Chapagain, Suraj Kumar Dhungel, Bijaya Sen Khadka
Abstract—Route alignment of transmission line are deduced considering features of the site, like forest areas, settlements, slopes. Traditionally, the whole process was based on expert’s judgment and hence prone to human biases. With the availability of satellite images and Geographic Information System (GIS) – based software, transmission line routing is carried out more effectively these days. GIS-based analysis requires feature data of the land, like land-use type, rivers, roads, settlements, etc. Application of GIS-based routing system for countries like Nepal faces data constraints. Although processing information from satellite images could be carried out for transmission line routing, there exist cost constraints for 33 kV lines. A three-level routing approach based on GIS is proposed in this paper. The routing of the line is proposed to be carried out, first by determining the Least Cost Path (LCP) between the starting and ending substation. The obtained site will then be subjected to the expert review, who will select the best sections of the LCP and deduce the route alignment for the line. Since, many features on-site, may not be available/visible in the satellite imagery, the final route alignment needs to be decided after the site visit. Four different variants of the obtained results are presented and analyzed.
Keywords—Least Cost Path, Distribution System, Electrification
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Published In: International Conference on Role of Energy for Sustainable Social Development in ‘New Normal’ Era (RESSD-2020)
Date of Conference: 28th-29th December 2020
Conference Location: Kathmandu, Nepal
Publisher: IEEE Power and Energy Society Nepal Chapter
Cite the paper as:
B. Paudyal, N. Joshi, B. Rai, A. Regmi, P. Khanal, B. P. Neupane, P. Tiwari, D. Niroula, P. Basnet, R. R. Shrestha, S. Ghimire, N. Karmacharya, N. R. Chapagain, S. K. Dhungel, B. S. Khadka, “GIS-based Three Level Method for Determination of Route Alignment of 33 kV Lines in Nepal”, International Conference on Role of Energy for Sustainable Social Development in ‘New Normal’ Era, 28th-29th December 2020, Kathmandu, Nepal