Project report on THDC Hydrop Power Plant Summer Training

Project report on THDC Hydrop Power Plant Summer Training

• 1.
  Tehri Hydro PowerPlant Summer Training Presentation Charu Kandpal 110970105019 Electrical Engineering Department of Electrical Engineering THDC Institute of Hydropower Engineering and Technology
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  16/12/2014 Contents Introduction1 Power Generation2 Excitation System3 BrakingSystem4 Gas Insulated Switchyard5 THDC IHET
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  Introduction TEHRI HYDRO DEVELOPMENTCORPORATION, or THDC, is a joint venture of the Central Government and Uttar Pradesh State Government (Now Uttarakhand Government). The Tehri Dam is a multi-purpose rock and earth- fill embankment dam at the confluence of Bhagirathi and Bhilangna River at Tehri in Uttarakhand, India. Tehri Hydro Power Projects comprises of three phases. THDC IHET16/12/2014
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  16/12/2014 THDC IHET Phasesof Tehri Hydro Plant Phases Phase 1 Phase 2 Phase 3 Tehri HEP (4X250MW) was completed in 2006. Koteshwar HEP (4X100MW) was completed in 2012. (4X250MW) Pumped storage Plant of hydroelectricity generation is under construction.
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  16/12/2014 Cycle Diagram PSP Storage HRT Turbine TRT WaterFlow Diagram Working of PSP THDC IHET Lower Storage
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  16/12/2014 THDC IHET TehriHEP System Classification Systems of HEP Generation System Braking System GIS System Tehri Excitation System
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  THDC IHET Power Generation FourFrancis Turbines Through BVC Four Penstocks Feeds Four Turbines Turbine Rotates Excited Rotor Water Rotates Turbine Blades One HRT = Two Penstocks Water Flows Through HRTs 16/12/2014 According To Faraday’s Law
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  Pictorial Representation of Generation 16/12/2014THDC IHET
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  Need of anExcitation System  The basic principle of power generation is when a magnetic field is moved across a stationary conductor, Voltage gets induced in the conductor.  Voltage will be induced even if conductor is rotated and magnetic field is kept stationary . 16/12/2014 THDC IHET
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  THDC IHET Need ofan Excitation System 1 Intensity of the flux in rotating magnetic field. This can be varied by DC current applying to the electromagnet. 2 3 Length of the conductor. This can’t be varied due to manufacturing reasons. Generator output voltage is affected by the following factors: Rate at which flux lines cut by the conductor. This can’t be changed due to the const. speed 16/12/2014
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  THDC IHET Braking System Normal Speed 12 3 4 Speed<50% Speed<4% END 16/12/2014
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  THDC IHET Gas InsulatedSwitchyard Power Grid Transmission Generation Transformer GIS Power Grid Step Up 15.75 KV into 400 KV Passed through GIS Generation occurs at 15.75 KV 16/12/2014