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Primary Frequency Control

Boiler-Turbine-Generator System. . Units with different Ratings and Same Governor Droop of 3%. Governor Regulation with different ratings and different droop constants. Two Units : Same Rating, same droop. Two Units : Different Ratings, Same droop. . Two Units : Same Rating, Different Droops. . Three Units : One unit Regulating.

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Primary Frequency Control

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    1. Primary Frequency Control

    2. Boiler-Turbine-Generator System

    3. Units with different Ratings and Same Governor Droop of 3%

    4. Governor Regulation with different ratings and different droop constants

    5. Two Units : Same Rating, same droop

    6. Two Units : Different Ratings, Same droop

    7. Two Units : Same Rating, Different Droops

    8. Three Units : One unit Regulating

    9. Three Units: Two Units Regulating

    10. Two machines of capacity 200MW with 6% Governor droop and 500MW with 3% Governor droop are operating in parallel with 150MW and 300MW loads to meet a total demand of 450MW at 50Hz in an isolated system. If the total load increases by 100MW to 550MW, what is the resultant load shared by each unit and the resultant frequency of the system. The increase in load of a unit with P1 MW Rating and R1%droop is ?P1 ? (P1 / R1 ) ? ?P1 = K (P1 / R1 ) Similarly ?P2 ? (P2 / R 2 ) , ? ?P2 = K (P2 / R 2 ) Total load change = ?P1 + ?P2 = 100MW ??P = 100 MW = ?P1 + ?P2 = =100MW =

    11. Example contd.

    12. FGMO in Integrated Systems: Two Units - Shifting Load by changing the Reference System

    13. FGMO in Integrated System: Droop Characteristic showing Load Limit Less than Full Load

    14. Governor Action in an Integrated System

    15. Governor Response to Sudden Loss of Generation

    16. Governor Response:

    18. Boiler-Turbine-Generator System

    19. Temporary Increase in Droop Due to Boiler Effects

    20. Response Characteristics for Boiler-Turbine-Generator Control Systems

    21. Bibliography

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