Siah-Bisheh Pumped Storage Power Plant

 
SIAH BISHEH H.P.P

General Information & History :

 

Initial studies were carried out by Tractionell Consultant, a Belgian Company , in 1970 and The first phase studies were completed in 1972 by the same company .

In 1984 phase II studies and preparation of tender documents began by Moshanir and Lahmayer International Joint venture, which were completed in 1986.

Technical and economical provisional studies were started again in 1999by EDF Company and completed in 2000 

Phase II design completion was carried out by Moshanir-EDF in 2002. 

     The project is located in the vicinity of Siah-Bisheh village in Mazandaran province 125 km to the north of Tehran and 10 km to the north of kandovan tunnel on chalus river .

The objectives of the project are generating 1000 MW of hydroelectric energy and creating balance in the national electricity network during peak and non-peak hours.

 

Geographical  Location:

 

Project site is located in the vicinity of Siah Bisheh village in Mazandaran province.
 
Objectives:

The main objectives of the project can be summarized as follows:

1-     Hydropower generation using an installed capacity of approx,

     1000 MW (4*250 MW units)

2-     Creating balance in the national electricity network during peak hours and

      non-peak hours.

3-     Playing the role of a reliable consumer for the network.

 

Specifications Of Dams

Upper Dam

Lower Dam

Dam Type

CFRD

CFRD

Height

85 m

104 m

Crest Length

390 m

330 m

Crest Width

15 m

15 m

Foundation Width

280 m

360 m

Total volume of the reservoir

3.5 million m3/s

3.6 million m3/s

Spill way capacity

170 m3/s

890 m3/s

Spill way Type

Free Ogee

Free Ogee

Energy dissipation system

Flip bucket

Flip bucket with plunge pool

Water Conveyance System
Diameter of tunnels (inner Diameter) 2 x 5.7 m
Length 2 km
Design Flow (Generation mode) 130 m3/s
Design Flow (Pumped mode) 100 m3/s
Diameter of inclined shafts 5 m
Length of each shaft 760 m
Type of Lining in shafts Concrete & steel
Diameter of Tailrace tunnels 6 m

Diversion System
Number of Tunnels 2
Diameter 2.95 m Upper Dam

4.0 m Lower Dam

Power generation mode
Turbine Output: 255 MW (each)

 

 Powerhouse Equipment
Type of Pump Turbines 4 Vertical Francis Type
Max. Net head 511.3 m
Min. Net head 460.6 m

Pumping Mode
Pump Input 220 MW (each)

 

Caverns
Dimensions Power cavern Transformer cavern Guard gate cavern
Length 130 m 182 m 79 m
Width 22 m 13 m 4.5 m
Height 42 m 22 m 8 m