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What is the reason of using HVDC transmission line for transmitting bulk amount of power over longer distance?

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What is the reason of using HVDC transmission line for transmitting bulk amount of power over longer distance?

High voltage direct current (HVDC) power systems use D.C. for transmission of bulk power over long distances. For long-distance power transmission, HVDC lines are less expensive, and losses are less as compared to AC transmission. It interconnects the networks that have different frequencies and characteristics.

What is HVDC and its importance?

High-voltage direct current (HVDC) technology offers several advantages compared to alternating current transmission systems. For example, it allows more efficient bulk power transfer over long distances. Thus, the majority of transmission lines carrying power around the world are of the AC type.

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What is the main advantage and disadvantage of using HVDC for power transmission?

Advantages of high voltage DC transmission : Fault clearance in HVDC is faster, therefore the DC transmission system possesses improved transient stability. Size of the conductor in DC transmission can be reduced as there is no skin effect. Cost is less as compared to the AC transmission. HVDC tower is less costly.

What are the advantages and limitations of the HVDC transmission?

Lower Transmission Losses: HVDC transmission requires only two conductors. Therefore the power loss in dc line will be lesser compared to ac line. Good voltage Regulation: In dc lines voltage drop does not exist due to inductive reactance. Voltage Regulation will be better in HVDC transmission.

When should we use HVDC transmission line?

4.6

  1. High voltage direct current (HVDC) power systems use D.C. for transmission of bulk power over long distances.
  2. For long-distance power transmission, HVDC lines are less expensive, and losses are less as compared to AC transmission.
  3. It interconnects the networks that have different frequencies and characteristics.
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Which is not advantages of HVDC system?

Disadvantages of HVDC Transmission The terminal equipments require large MVAR. It generates harmonics which produces interference with communication lines. Filters are required to minimise the harmonics, thereby increasing the cost of terminal stations.

What are the main components of HVDC system?

Main components of HVDC system are as under:

  • DC line inductors,
  • harmonic filters,
  • converter transformers,
  • a reactive power source,
  • ground electrodes,
  • a microwave communication link between the converter stations.