Abstract
The industry and technology of high-voltage alternative current (HVAC) transmission lines have evolved over 100 years in the United States and many parts of the world, requiring new engineering and economical solutions. This report presents some of the critical aspects of transmission line evaluation, design, and physical installation of a typical 345 kV cross-country transmission line in the United States, with some degree of commonality to other technical standards in the rest of the world. The project will also examine theoretical aspects of transmission system design criteria such as power flow analysis, short circuit and relay coordination and more basic parameters such as trans-mission efficiency, voltage regulation, plan and profile for an overhead transmission line.