[M19PS1104]
I M. Tech I Semester (R19) Regular Examinations
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HVDC TRANSMISSION
Electrical & Electronics Engineering
MODEL QUESTION PAPER
TIME: 3Hrs. Max. Marks: 75
Answer ONE Question from EACH UNIT.
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All questions carry equal marks.
CO | KL | M
UNIT-I
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1. | a). | Briefly explain the power handling capabilities of HVDC lines. | 1 | K2 | 8M |
b). | Mention the advantages of HVDC technical economical reliability aspects. | 1 | K1 | 7M |
OR
2. | a). | Explain briefly about the static converter configuration. | 2 | K2 | 7M |
b). | Explain different types of HVDC links in detail. | 1 | K2 | 8M |
UNIT-II
3. | a). | Write the special features of converter transformers. | 2 | K1 | 7M |
b). | Draw the equivalent circuit of converter and explain it. | 2 | K2 | 8M |
OR
4. | With a neat sketch, explain the working of a 12 pulse converter circuit. | 2 | K2 | 15M |
UNIT-III
5. | Mention the reasons for generation of harmonics in HVDC transmission and explain them in detail. | 3 | K2 | 15M |
OR
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6. | a). | Explain briefly about the Individual phase control. | 3 | K2 | 8M |
b). | Explain briefly about the Constant extinction angle. | 3 | K2 | 7M |
UNIT-IV
7. | a). | Explain the significance of DC power modulation. | 3 | K2 | 7M |
b). | What are the advantages of Multi-terminal DC links? | 6 | K1 | 8M |
OR
8. | a). | Give the comparison between series and parallel MTDC systems. | 6 | K2 | 8M |
b). | Draw and explain the rectifier characteristics by voltage limiting control method. | 3 | K2 | 7M |
UNIT-V
9. | a). | Discuss about the over voltages due to disturbances on DC side. | 5 | K2 | 8M |
b). | What are the uses of circuit breakers in HVDC systems? | 5 | K2 | 7M |
OR
10. | a). | Explain briefly about surge arrester and their application? | 5 | K2 | 8M |
b). | Discuss about over current protection. | 5 | K2 | 7M |
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