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Sunday, July 24, 2011

Some notes made on visit of Suzlon windfarm few yaers back.


  • 1.25 MW machine was studied. It generated 20 thousand Units a day.Cost of the machine was Rs.5 Crore.Total windfarm had 500 such machines and windfarm capacity was 650MW.

  • The windfarm was having 1.5 MW and 2.1 Mw machines under installation. The 1.25 MW machine had a height of 200 feet and gear ratio of 70 .

  • The machine had 4 yaw motors which drove yaw drums. Yawing range was from 0 degrees to 950 degrees.

  • Some terminologies:- PPE and JSA

  • Pitch motors were driven by pitch drive. Pitching range was 0 degrees to 90 degrees.

  • Pitch angle was marked as +7 or 0.

  • Windfarm used to feed 220 KV lines.

  • Lube oil was circulated with pumps.

  • Generation voltage was 630 V. RPM was 1500.Active and reactice power was monitored.

  • I saw Tool Kit register and tool Box Meeeting.

  • An enginner explained how they overcame a problem by changing bolts into studs.

  • Control was divided into parks of 24 motors.

  • Capacitors were switched on based upon recative power requirement.

  • Motors were first fed from grid, then they started generating.

  • Battery supply was used for pitching in case of grid supply faliure.

  • Theft was a major proble. We enjoyed tea made with biogas.

  • Electronis was thyristor based.