Abstract
Efficient and reliable transmission of bulk power economically benefits both the power company and consumer. This report gives clarification to concept and procedure in design of an overhead 345 kV long transmission line. The project will find an optimum design alternative which meets certain criteria including transmission efficiency, voltage regulation, power loss, line sag and tension. A MATLAB script will be developed to assess which alternative solutions can fulfill the criteria. Integration of protective devices is a fundamental part of achieving power system reliability. To determine the sizing and setting of protective devices, analysis of potential fault conditions provide the necessary current and voltage data. A fault analysis for the final transmission line design will be simulated two ways: 1) by using a MATLAB script that was developed for this project and 2) by using an available Aspen One Liner program.