Introduction:

The important considerations in the design and operation of a transmission line are the determination of voltage drop, line losses and efficiency of transmission. These values are greatly influenced by the line constants R, L and C of the transmission line. For instance, the voltage drop in the line depends upon the values of above three line constants. Similarly, the resistance of transmission line conductors is the most important cause of power loss in the line and determines the transmission efficiency.

Learning Objectives:

• To understand basics of transmission line
  
• To know about the constants of transmission line
  
• To design and interpret the performance of transmission line

Lecture Contents:

• Constants of Transmission Lines
• Skin Effect
  
• Classification of Overhead Transmission Lines
• Performance of Single Phase Short Transmission Lines
• Three-Phase Short Transmission Lines
• Effect of Load p.f. on Regulation and Efficiency
• Medium Transmission Lines and solution methods
• End Condenser Method to solve Medium transmission line

Learning Outcomes:

The students will be able to

• develop formulas by which we can calculate voltage regulation, line losses and efficiency of transmission lines
  
• understand the effects of the parameters of the line on bus voltages and the flow of power
  
• realize overall understanding of what is occurring on electric power system
• apply different methods for solving short, medium and long transmission lines