Saroj Ghimire - Academia.edu (original) (raw)
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Papers by Saroj Ghimire
The conventional method of Transmission Line Routing is based on expert judgment, making it sub-o... more The conventional method of Transmission Line Routing is based on expert judgment, making it sub-optimal, subjective and biased. This paper introduces, elaborates and implements a new method of Transmission Line Routing based on Geographic Information System, which not only eliminates the biasedness during routing but also helps to maintain the balance between conservation and development. Transmission Line Routing using GIS tools of spatial sciences involves identification of factors affecting transmission line route such as land-use data, settlements, roads, slope etc. and preparation of several parameters sets by specifying different weight/cost index values to each of these factors and their subcategories, based on different priority for different factors. Modified Dijkstra (A*) algorithm implemented in python computer program was used to calculate the least cost path from start point to end point on the combined weighted raster for each of the parameter sets. The least-cost path represented the transmission line route alignment in this case. Lastly, a case study based on the implementation of GIS concept of routing a 400 kV Transmission Line of over 70 km has been presented. The study shows that GIS-based transmission line routing is a flexible and effective method of tracing the routes.
The conventional method of Transmission Line Routing is based on expert judgment, making it sub-o... more The conventional method of Transmission Line Routing is based on expert judgment, making it sub-optimal, subjective and biased. This paper introduces, elaborates and implements a new method of Transmission Line Routing based on Geographic Information System, which not only eliminates the biasedness during routing but also helps to maintain the balance between conservation and development. Transmission Line Routing using GIS tools of spatial sciences involves identification of factors affecting transmission line route such as land-use data, settlements, roads, slope etc. and preparation of several parameters sets by specifying different weight/cost index values to each of these factors and their subcategories, based on different priority for different factors. Modified Dijkstra (A*) algorithm implemented in python computer program was used to calculate the least cost path from start point to end point on the combined weighted raster for each of the parameter sets. The least-cost path represented the transmission line route alignment in this case. Lastly, a case study based on the implementation of GIS concept of routing a 400 kV Transmission Line of over 70 km has been presented. The study shows that GIS-based transmission line routing is a flexible and effective method of tracing the routes.