TP Link Tail Hydropower Project
TP Link Tail Hydropower Project would be developed on Taunsa Panjnad (TP) Link Canal at RD 183+000. TP Link Canal off-takes from the left of Taunsa Barrage. The proposed project area is located at a longitude of 71°-15’ East and latitude of 30°-18’ North at a distance
of 65 km from Multan. The project area is located in Tehsil Rangpur, District Muzaffargarh.
The distance of project area from Karachi port is about 1015 km by road. The project area can be easily accessed and communicated by all means of communication, i.e., Railway, Road and Telephone systems.
Basic data regarding canal and canal structures in the form of structural drawings and longitudinal sections, daily discharge and water level data from 1993-2008 have been collected from the Punjab Irrigation and Power Department. Topographic mapping and subsurface
drilling were carried out by Private companies. The letter of Indent was awarded by Punjab Power Development Board to New Park Energy (Pvt) Ltd. The task of preparing feasibility study was awarded to FHC Consulting Engineers, Lahore.
Historic daily discharge and water level data / gauge readings u/s and d/s at RD 183+000 of TP Link Canal has been collected for the period of 1993-2008 from the office of XEN Irrigation and Power Department, Punjab. A rating curve for the tail water level at RD
183+000 has been established.
No sediment sampling has been conducted at any location of the canal by any agency. Therefore, it is recommended that sediment sampling should be made at this location regularly, so that reasonable historic data is available in order to get sediment concentration
and size of the material flowing in the canal at the time of detail design.
The canal discharge at proposed powerhouse location has been stimated as 260 m3/s. The same discharge has been used design discharge for the power scheme. The canal design head water level at RD 183+000 is 127.04 m.
POWER AND ENERGY
Power and energy potential of TP Link Hydropower Project has been investigated in detail taking into consideration the discharges passing through the existing fall structure and corresponding downstream water levels.
The power and energy has been estimated by using discharges 1993 to 2008. The analysis based on daily water level data shows that head remains in between 4.2 to 5.7m corresponding to the range of design discharge.
Keeping in view the standardization concept, three (3) number of units based on the historic availability of flows with rated discharge of 87.3 m3/s per unit have been selected. The
criteria adopted in the power calculations for the minimum discharge to be accepted by a turbine are 30% of the design discharge and for the overload conditions, 15% of the design discharge. The efficiency for turbines has been taken as 92%, while for generators as 96%
and for transformers as 98%.
For a design discharge of 260 m3/s and rated head of 4.2 m, installed capacity of plant would be 9.0 MW with mean annual energy production of 35.57 GWh. The estimated plant factor