An AHP Based Way to Evaluate Appropriate Points for Installing Power Towers and Finding the Best Way for Power Transmission Lines by GA Algorithm Homa Famil Bahmani* 1 Mostafa Hosseini Fatemeh Shabannejad Tehran Power Distribution Department of Artificial Tehran Power Distribution Company, IRAN Intelligence Company, IRAN Bahmani.Homa@gmail.com Mostafah@systemgroup.net Fshabannejad@yahoo.com Abstract- Today optimization is one of the most important issues in all engineering fields. According to importance of this issue in planning power transmission lines, appropriate areas have been accreted for numerous researches. Widespread usages of GIS application and its combination with GA base methods offer practical solution for power transmission lines design. In this paper, we first study about efficient criteria for selecting appropriate points for installing towers, and then we can evaluate available points for installing power towers by one of the multi-criteria decision-making analysis, named AHP 2 . As we know, all of these nodes are not suitable for being one of the transmission line Points. So by using this procedure (AHP) we calculate cost function of transmission line between towers. Finally, with GA algorithm, the best and the most optimum route between source and destination will be selected. Keywords: Power Distribution Line, Geographical Information System, Genetic Algorithm, AHP Method I. INTRODUCTION The first step in installation of power lines is to find adequate criteria for assessment and selection of nodes. In this context, GIS techniques have been used as an efficient method for finding an appropriate assessment model. In order to select the best route for construction of power transmission lines network, at first it is needed to find appropriate nodes for installing power tower then we have to look for finding a function for calculating cost between nodes. In this paper both of mentioned process happens by AHP algorithm. An AHP algorithm is a hierarchical and layered algorithm that let us define our evaluation criteria, classified and based on priorities and dependences. 1 Presenter of full paper Telephon number:+989126593925 Fax Number: 2 Analytic Hierarchy Process