HVDC Presentation (Amity)

8/10/2019 HVDC Presentation (Amity)

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PURUSHOTTAM SHARMA

SAMEER GUPTA

SHASHANK RAIZADA

Amity University Rajasthan


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Uses of Transmission lines :- To transfer the energy or signal from the

transmitter to the receiver. It acts as communication media. In most cases, transmission lines are metallic

conductors. Few e.g. of Transmission lines are:-

Parallel wiresTwisted pair wiresRibbon typeCo-axial cablesMicro-strip lines

Wave guides



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CONVENTIONALLY POWER TRANSMISSION IS EFFECTED THROUGH HVAC

SYSTEMS ALL OVER THE WORLD.

HVAC TRANSMISSION IS HAVING SEVER LIMITATIONS LIKE LINE LENGTH ,

UNCONTROLLED POWER FLOW, OVER/LOW VOLTAGES DURING LIGHTLY / OVER

LOADED CONDITIONS,STABILITY PROBLEMS,FAULT ISOLATION ETC

CONSIDERING THE DISADVANTAGES OF HVAC SYSTEM AND THE ADVANTAGES

OF HVDC TRANSMISSION , POWERGRID HAS CHOOSEN HVDC TRANSMISSION

FOR TRANSFERRING 2000 MW .

COMPARISION OF HVAC & HVDC SYSTEMS



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CONTROLLED POWER

ASYNCHRONOUS OPERATION POSSIBLE BETWEEN

REGIONS HAVING DIFFERENT ELECTRICAL

PARAMETERS

NO RESTRICTION ON LINE LENGTH AS NO

REACTANCE IN DC LINES

ADVANTAGES OF HVDC OVER HVAC

TRANSMISSION



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COST: AC vs DC Transmission

Terminal Cost AC

Terminal Cost DC

Line Cost DC

Line Cost AC

Break Even Distance


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HVDC IN INDIABack-to-Back

HVDC LINK CONNECTINGREGION

CAPACITY(MW)

Vindyachal North West 2 x 250

Chandrapur West South 2 x 500

Vizag I East South 500

Sasaram East North 500Vizag II East South 500



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BASIC PRINCIPLES

OF

HVDC TRANSMISSION


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Direct current is put to use in common life for drivingour portable devices, UPSs, battery systems and vastlyin railway .

USE OF D

DC AS A MEANS OF TRANSMISSION

This has been possible with beginning of

High power/ high current capability thyristor.&

Fast acting computerized controls



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If DC is required to be used for transmission

&since our primary source of power is A.C ,

The following are three basic steps:-

1. Convert AC into DC ( rectifier)

2. Transmit DC

3. Convert DC into AC ( inverter )



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HVDC Presentation (Amity)

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