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NR HVDC Transmission

This document is an examination paper for the M.Tech I Semester in HVDC Transmission from Jawaharlal Nehru Technological University Hyderabad. It includes eight questions covering topics such as the comparison of EHVAC and HVDC transmission, analysis of Graetz circuit, characteristics of converters, and various types of filters and MTDC systems. Students are required to answer any five questions, with all questions carrying equal marks.

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sudhakar k
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32 views1 page

NR HVDC Transmission

This document is an examination paper for the M.Tech I Semester in HVDC Transmission from Jawaharlal Nehru Technological University Hyderabad. It includes eight questions covering topics such as the comparison of EHVAC and HVDC transmission, analysis of Graetz circuit, characteristics of converters, and various types of filters and MTDC systems. Students are required to answer any five questions, with all questions carrying equal marks.

Uploaded by

sudhakar k
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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com

NR
Code No: A4902
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
M.Tech I Semester Examinations, October/November-2011
HVDC TRANSMISSION
(ELECTRICAL POWER ENGINEERING)
Time: 3hours Max. Marks: 60
Answer any five questions
All questions carry equal marks
---

1. a. Compare EHVAC and HVDC transmission


b. Explain the advantages and disadvantages of HVDC Transmission. [12]

2. a. Explain the analysis of Graetz circuit without overlap.


b. Explain the Characteristics of twelve pulse converter. [12]

components.

L
[12]
D
3. Draw the schematic diagram of a typical HVDC Converter station and explain its major

4. a. Explain the various types of DC and AC filters.


b. Explain the converter bridge characteristics.

5. Explain the following.


a. Individual phase control
O R [12]

b. Equidistant pulse control


c. Equidistant Firing angle.

U W
6. Explain the various types of MTDC Systems.
[12]

[12]

N T
7. a. Explain the Converter faults.

J
b. Explain the protection against over currents. [12]

8. a. Explain the over voltages in a converter station.


b. Write short notes on surge arresters. [12]

******

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