Hydel

                                                                                                         MACHKUND HYDRO ELECTRIC SCHEME (3 x 17 MW + 3 x 23 MW):

Machkund Hydro Electric (Joint) Scheme is an Inter-State Project of Government of Andhra Pradesh and Government of Odisha. The Project is located on the western slopes of the Eastern Ghats near the well know Duduma falls on Machkund River. As per the Inter State Agreement,dt: 14.01.1945, Andhra Pradesh and Odisha share the capital expenditure and power benefits in the ratio of 70:30 respectively.

Subsequently, a new agreement was entered on 23.10.2020 between Andhra Pradesh and Odisha to share the cost and benefits in the ratio of 50:50 to carry out R, M & U works.

A storage reservoir of 34 TMCft gross capacity at Jalaput to impound the flow in the Machkund River. Diversion dam is constructed, 17 km downstream of Jalaput dam, to divert the water into the power canal.

Salient features:

  1. Location : Jalaput, Koraput Dist, of Orissa state 176 KM from Visakhapatnam.
  2. Category : Hydro Power Project (Jt Project of Govt. of A.P. & Govt. of Odisha (50:50)
  3. Capacity : 120 MW ( 3 x 17 MW + 3 x 23 MW)

AP Share 60 MW

  1. River : Machkund (called Sileru in lower reaches)
  2. Dam : Machkund, Diversion dam across the river 11 miles

below Jalaput dam and 1.5 Miles above Duduma falls.

  1. Annual Energy Potential :  630 MU (120 MW at 60% load factor)
  2. Reservoir : Jalaput
  3. Catchment Area : 858 Sq. Miles
  4. Max. flood  discharge : 1,85,000 Cusecs
  5. Live Storage : 31.517 TMC Ft.
  6. Gross Storage : 34.27 TMC Ft.
  7. Generation per TMC : 17.5 MU
  8. Gross head            : 844 Ft.
  9. Net Head : 805 Ft. /837 Ft.
  10. Full Reservoir level (FRL) : 2750.00 Ft.
  11. Min. Draw Down Level (MDDL): 2685.00 Ft.
  12. Tail Race water level for : 1676 Ft.

Commissioning details:

Unit – 1 : 19th August’ 1955

Unit – 2 : 12th December’ 1955

Unit – 3 : 26th June’ 1956

Unit – 4 : 15th January’ 1959

Unit – 5 : 7th August’ 1959

Unit – 6 : 8th August’ 1959

Technical:

  1. Turbine   Stage – I Stage - II

      a)  Type : Vertical Water Wheel Vertical Francis Francis reaction

      b)  Make : Morgan Smith, USA             M/s. J.M.Voiths, G.M.B.H, Germany

      c)  Net Head : 245 Mts. 255 Mts.

     d)  Rated Output : 25000 BHP 35500 BHP

     e)  Max. Output : 26250 BHP

     f)   Normal Speed : 600 RPM 600 RPM

    g)  Runway speed : 900 RPM 1100 RPM

    h)  Disc. Through Machine : 300  Cusecs  ,415 Cusecs

 

2.Generator

    a)  Type : Rotating Field Vertical Water Wheel

    b)  Make : Westing House, Brown Boveri Electrical Corporation USA   

    c)  Rated Voltage : 11 KV 11KV

    d)  Rated Out put : 17 MW/20 MVA 23 MW / 27 MVA

   e)  Current : 1050 A 1410 A

   f)   Speed : 600 RPM 600 RPM

  g)  Power Factor : 0.85 Lag 0.85 Lag