EHV POWER TRANSMISSION

EHV POWER TRANSMISSION

Unit: 1 – INTRODUCTION

1. What is meant by extra high voltage?
2. Write the nominal system voltages in kV?
3. Write the maximum operating voltages in kV?

4.    Of the following transmission voltages (given in kV) used in the world, which ones

are used in India at present: 66, 132, 169, 220, 275, 345, 400, 500–525, 735–765, 1000, 1150.

5. Distinguish between nominal system voltages and maximum operating voltages?

6.       What are the factors on which the power that can be transmitted through an EHV line depands?

7.       Write the power transmission equation?

8. What is meant by power handling capacity?
9. Write the current equation of the transmission power?
10. Define %power loss?
11. Calculate the %power loss of 750 kV?
12. Calculate the PHC of 1000 kV and 800 KM distance transmission line?
13. What are the transmission line equipments?
14. State the cost of 400kV AC transformer?
15. Define the cost of shunt capacitor?
16. What are the mechanical considerations of   line performance?
17. Distinguish between vibrations and oscillations?
18. What are the factors depends upon the vibrations?
19. What are the types of vibration?
20. What is meant by Aeolian Vibration?
21. Define Galloping
22. State Wake-Induced Oscillations
23. What is a damper?
24. What is meant by spacer?