MANUFACTURING

   
             
   

Jagalur Wind Farm

Jagalur Wind Farm is located on Guheswaragudda Ridge at Jagalur Village, Davangere Dist of Karnataka. The Wind Farm is located at one of the windy sites of the Country. The Wind Farm consists of 6 Nos. of 1.5s GE Make 1500 KW Capacity WTGs; 9 Nos. of NM 54/950 Vestas make 950 KW Capacity WTGs and 16 Nos of NM 48/750 Vestas make 750 KW Capacity WTGs. These WTGs were commissioned in phases from March 2001 to September 2004.  The Operation and Maintenance of these WTGs are being done by respective Original Equipment Manufacturer (OEM).

The 6 Nos.of 1.5s GE WTGs are equipped with State-of-the-art SCADA (Supervisory Control and Data Acquisition) System, which facilitates not only Monitoring the performance of WTGs but also to get the data for fault analysis through SCADA system help in trouble shooting of WTGs. The temperature and other related functional outputs are monitored to understand the causes of breakdowns and to determine the genuineness of some fault alarms. SCADA can help to plan the actual work by making the details of the fault available before visiting the WTG Location so that the required parts and tools are carried to the site.

The Vestas make 750 KW WTG at Loc # 5 has achieved a record performance of 41.62% during the Financial Year 2004-05 and 41.84 % during the Financial Year 2006-07.

The Average Annual Capacity Factor (PLF) is 33%, 35% and 38% for 750 KW, 950 KW and 1500 KW WTGs respectively.
           
       
 
               
                 
   

Power Evacuation

The WTGs generates 690 V at Generator Level which is stepped up from 690 V to 33 KV at respective WTG Transformer Yards.  The Voltage at 33 KV is transmitted through 33 KV Intrafarm Transmission Lines to the 33/66 KV Substation.  The Voltage at 33 KV is again stepped up from 33 KV to 66 KV through 25/31.5 MVA Power Transformer at 33/66 KV Substation.  The entire Power (after deductingAuxiliary Consumption) is sold to Bangalore Electricity Company Limited (BESCOM) at 66 KV Voltage Level at the Tariff applicable from Time to Time.

     
   
             

Salient Features

Vestas make 950 KW and 750 KW WTGs

    • Low Wear and Tear of Gear Box.
    • Suitable for high windy sites.
    • Low Mechanical loads at peak generation.
    • Robust Construction.
    • Simple and Efficient interface with utility.
    • Rapid Synchronisation.
    • Microprocessor based controls.
   
                 
       

                  GE make 1500 KW WTGs

    • Doubly – fed Induction Generator with a four – quadrant DC Link Converter
    • Converter feeds Generator Rotor via Slip Rings
    • Rotor is excited by the Frequency Converter (Sized at 1/3 of System Output)
    • Speed Range of ± 30% around rated speed (800 – 1600 rpm)
    • Generator Torque and Output can be controlled via Rotor Current.
    • Power Factor Control
    • Power and Torque Control
    • Reactive Power Control
    • Improved Flicker behaviour (Power Oscillation)
    • Power Converter handles a fraction (~ 30%) of total System Power
    • Reduced Loading on Turbine Components
    • Reduced Losses and Cost Saving
    • Increased Energy Production
    • Enhanced Energy Capture
    • Converter Controls Speed / Torque and Reactive Power on Stator Side.
  
       
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