Auxiliary power supply system
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Auxiliary Power Supply System. By CGS Gunasekara. Content. Why auxiliary supply is needed ? Equipments supplied through auxillary. Modes of operation. Demonstration of operation. Why auxiliary supply is needed ?

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Auxiliary Power Supply System

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Auxiliary power supply system

Auxiliary Power Supply System

By

CGS Gunasekara


Content

Content

  • Why auxiliary supply is needed ?

  • Equipments supplied through auxillary.

  • Modes of operation.

  • Demonstration of operation


Auxiliary power supply system

  • Why auxiliary supply is needed ?

    To supply power to generator/turbine and other ancillary equipments for their operation.


Auxiliary power supply system

Equipments supplied by auxiliary.

Common supplies

  • Lighting system

  • Annunciators & indicators, alarms

  • Ventilation system (supply fans, Exhaust fans)

  • AC system (compressures, blower fans)

  • Battery charging system (220 V , 48 V)

  • Drainage pumps

  • Communication system


Auxiliary power supply system

Turbine & Generator

  • Instrumentation (metering)

  • Protection relays

  • Bearing oil pumps

  • Air compressors

    • (to operate governor equipment

    • Turbine , break system)

  • Cooling water pumps (stator coolers, bearing oil coolers)

  • Bearing oil pumps

  • Generator Heaters


  • General layout diagram

    General Layout Diagram


    Modes of operation

    Modes of operation

    (1) From 220 KV bus through main T/F1,2,3 and through HAD3,5, or 6 (to both ESS & Non-ess sides)

    (2) Generators through HAD3,5 or 6 (to both ESS & Non-ess sides)

    (3) DG ( only to ESS side, can not extend to Non-Ess side)


    Auxiliary power supply system

    *Voltage : 220 KV bus voltage 13.8 KV 11 KV400 V 3 ph


    Auxiliary power supply system

    *Voltage : generator voltage 13.8 KV 11 KV400 V 3 ph


    Auxiliary power supply system

    * Voltage : through DG T/F 400 V step up to 11 KV 400 V 3 ph


    Auxiliary power supply system

    • Demonstration of operation

      Auxiliary supply system demonstration.exe

      Note: To run the exe file,

      1. Down load the APSS.rar file .

      2. Unzip that file to the same folder where APSS.ppt is available.

      3. Now, click above link


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