Classification of hydropower on different basis

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Hydropower can be classified into different types, according to different bases.

 

According to the availability of head

 

●        Low head power plants (<30m)

●        Medium head power plants (30-300 m)

●        High head power plants (>300 m)

 

According to capacity

 

●        Large (> 100 MW)

●        Medium (10 – 100 MW)

●        Small (1 MW– 10 MW)

●        Mini (100 kW – 1 MW)

●        Micro (5 – 100 kW)

●        Pico (< 5



According to the nature of Flow regulation

 

●        Run-of-river (R-O-R)

●        Storage (Reservoir)

●        Pumped storage

●        Offshore or Tidal

 

According to Type of Load Supplied

 

●        Base Load

●        Peak Load

 

The baseload of a Hydropower Plant is the constant load that occurs nearly throughout the day, whereas the peak load refers to the different peak demands of the load above the base load of the Hydropower plant.

 

According to hydrological relation

  •  Single stage: The run-off from a single hydropower plant is diverted back to the river 
  • Cascade system: Two or more Hydropower plants are used in series such that, The Run-off Discharge of one Hydropower plant is used as the intake of discharge of another Hydropower plant 

According to Purpose

 

  • The single-purpose: Whole soul purpose of a project is to produce electricity
  • Multipurpose: Water used in hydropower projects to be used for other purposes Like Irrigation, flood control, fisheries, and more.

 

According to the transmission system

 

  •    Isolated: Hydropower located in remote areas to meet local demand only
  •  Connected to Grid: Hydropower have access to transfer electricity with transmission system within a fair distance


 

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