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India’s First Voltage Source Convertor (VSC) Based High Voltage Direct Current (HVDC) System.

India’s First Voltage Source Convertor (VSC) Based High Voltage Direct Current (HVDC) System.:

POWERGRID has fully commissioned India’s First Voltage Source Convertor (VSC) based High Voltage Direct Current (HVDC) System.

  • It has commissioned Monopole-I of the 2000 Mega-Watt (MW), Pugalur (Tamil Nadu) – Thrissur (Kerala) Voltage Source Convertor (VSC) based High Voltage Direct Current (HVDC) System.
  • This Project strengthens the power system of Southern Region of our Country.
  • Monopole-II of the project was inaugurated by PM Modi in February, 2021 and with the commissioning of Monopole-I, the project has attained its full capacity.
  • The Pugalur-Thrissur HVDC system, costing Rs. 5070 crore, is a part of the Raigarh-Pugalur-Thrissur 6000 MW HVDC system and enables transfer of 2000 MW to Kerala through the VSC HVDC station at Thrissur.

Voltage Source Convertor (VSC)

  • An HVDC converter converts electric power from high voltage alternating current (AC) to high-voltage direct current (HVDC), or vice versa.
  • Electronic converters for HVDC are divided into two main categories.
  • Line-commutated converters (HVDC classic) are made with electronic switches that can only be turned on.
  • Voltage-sourced converters are made with switching devices that can be turned both on and off. It uses transistors, usually the Insulated-gate bipolar transistor (IGBT).
  • The VSC technology significantly reduces the land requirement compared to the conventional HVDC systems and is particularly suitable for areas, where land is scarce.
  • It also facilitates development of smart grid and improves system resilience under various operating conditions.
  • The state-of-the-art VSC Technology has been brought to India for the first time by POWERGRID through this Project.

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