Design of 11 kV Line

Quote "I am new to Design of overhead transmission lines."

To begin you can use the correct terminology. If the line is 11 kv, it is not a transmission line. It is a distribution line. Distribution lines generally will be 2.4 kv up to 35 kv. You will need to determine the load to be place on the line so you can choose a conductor size. Distance will be a factor. The area you live in will dictate some of the requirements such as wind loading, sag, ice loading, tension and other requirements. Pole class and height will need to be determined along with conductor sag. I have listed some of the information you will need. So to begin, Google Design of overhead distribution lines and have a go at it. You will need some one with experience to assist you. Good luck.

There may be some online software to help with the calculations.
It usually takes years of experience to do this. I am all ways amazed that people think one can just do this magnitude of design without putting the years of work to learn the process

1.1 The Conductor profile Parabola vs Catenary

1.2 Sag

1.3 Slack

1.4 Factors that affect conductor tension

1.5 Multiple Span tension calculations - ruling Span

1.6 Sag tension calculations

1.7 Span ratios

1.8 Wind Span

1.9 Weight Span

2.0 Conductor Size

2.1 Pole Hardware such as type of cross arms.