Question

write different ways to improve an existing over head a.c power transmission system

Answer 1

1) for transmission and distribution, we prefer high voltages because the power is constant at the generating station and load centre.

2) when ever we increase the voltage then current flowing through the conductor is reduced. So power losses i.e copper losses are reduced. So the efficiency of the system improved.

3) for increasing the voltage at the generating station we use step up transformers.

4) by improving the voltage at the load centre, we will connect FACTS devices.

5) by improving the power factor at the load centre, we will connect phase condensers across the load centre.