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HVDC Transmission Systems Guide

The document discusses high voltage direct current (HVDC) transmission systems. It asks questions about distinguishing AC and DC systems, components used in DC transmission like power semiconductor devices, converter station configuration, advantages and disadvantages of DC transmission, applications of HVDC, and factors to consider for HVDC planning. It also asks about energy availability, pulse number, peak inverse voltage, converter configuration, considerations for HVDC planning depending on applications, types of DC links and their comparison, reliability importance, calculations for extinction and overlap angles for a six pulse inverter, functions of converter stations, comparison of AC and DC transmission, trends in DC systems, analysis of two and three valve conduction modes, schematic of a six pulse Graetz circuit and

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D.VIJAYANANDH HICET STAFF EEE
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94 views2 pages

HVDC Transmission Systems Guide

The document discusses high voltage direct current (HVDC) transmission systems. It asks questions about distinguishing AC and DC systems, components used in DC transmission like power semiconductor devices, converter station configuration, advantages and disadvantages of DC transmission, applications of HVDC, and factors to consider for HVDC planning. It also asks about energy availability, pulse number, peak inverse voltage, converter configuration, considerations for HVDC planning depending on applications, types of DC links and their comparison, reliability importance, calculations for extinction and overlap angles for a six pulse inverter, functions of converter stations, comparison of AC and DC transmission, trends in DC systems, analysis of two and three valve conduction modes, schematic of a six pulse Graetz circuit and

Uploaded by

D.VIJAYANANDH HICET STAFF EEE
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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PART - A

Distinguish AC & DC transmission system?

Name the power semiconductor devices used in DC transmission?

Draw the converter station unit in HVDC transmission.

State the advantages & disadvantages of DC transmission?

List out the applications of HVDC.

What are the factors to be considered for planning of HVDC transmission?

Name the power semiconductor devices used in DC transmission.

What is Energy Availability?

Elucidate pulse number?

Draw the schematic diagram of three & two valve conduction mode.

Define peak inverse voltage.

What is choice of converter configuration?

PART - B

Discuss in detail about the various considerations in planning for HVDC systems depends on the
applications.

Mention the different types of DC links and compare their merits and demerits.

Write the significance on reliability of a DC transmission.

A six pulse inverter is operating at a constant margin angle of 18°. The valve side voltage is 70.7 kV (Line
to Line) and the leakage reactance of the converter transformer is 10 ohms. Compute the extinction
angle, overlap angle &DC voltage when (i) Id = 2500 A (ii) Id = 4200 A

Explain with the neat systematic diagram the typical HVDC converter station, and their
functions.

Based on technical performance, make a comparison between AC and DC Transmission.

Write short notes on Modern Trends in DC transmission systems.

Discuss in detail about the analysis of two and three valve conduction mode.
Draw the schematic circuit diagram of a 6 pulse gratez’s circuit and explain its principle of
operation.

Explain in detail about the analysis of line commutated converter.


Describe HVDC transmission based on voltage source converters

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