HVDC TRANSMISSION IV/IV B.TECH EEE IMPORTANT QUESTIONS

HVDC TRANSMISSION

 IV/IV B.TECH  EEE

1)   Explain briefly about different types of HVDC links.

2)  (a) Discuss the modern trends in HVDC transmission.

      (b) What are the advantages of HVDC system over HVAC system?

3) Analyze the Graetz’s circuit for without overlap condition?

4)  (a) With the help of a neat schematic diagram, explain the operation of three phase, sin pulse,              Graetz’s circuit when operating with a firing angle of α=300 Neglect the reactance of the     converter transformer.

5) (a) Draw and explain the combined characteristic of rectifier and inverter.

     (b) With a suitable circuit, explain the operation of constant current regulator.

6) Explain about individual phase control & Explain about equidistant phase control

7) Write short notes on advantages and disadvantages of synchronous condesors

8)  What are the advantages of a TSC and a fixed capacitor? Give the schematic of a single phase     TSC and illustrate the loss comparison between FC/TCR and TSC/TCR.