Presentation agenda contain
1. Preliminary site survey
2. Tools required
3. Data check list
4. Preparation of Prefeasibility report
5. Conatent of PFR
6. basic of calculation
2. Site Survey for SHP plant
Parameter , instrument & discharge data requirement
Feasible Site selection
Preparation of pre feasibility report(PFR)
What should be or not be in PFR
Executive summary & Introduction
Hydrology , Power potential and installed capacity
Turbine technology selection
Basic project structure
Surrounding ecology and geology
Project cost & break up
Various Graph
4. Detailed investigation and Survey
Pre Feasibility report (PFR)
Detailed Project Report (DPR)
Approval of DPR
Land Acquisition and forest land clearance
Environment Clearance
Power Purchase agreement
Preparation of plant for rehabilitation
Financing
5. To roughly evaluation of feasibility of project
To getting necessary data and figures for development
Measurement river/ water body flow data
Measurement of head ( Power α available head )
Topographical and geological condition of site
Site accessibility – need to be address during planning stage
Power evacuation point distance – determine power loss
Power demand assessment
6. Site Survey: Hydrological & geological Survey.
Estimation of Potential
Regulations & Environmental Concerns
Feasible Supply
Turbine Selection
Costing and Payback.
7. To measure the flow-rate vs time at a given site.
Direct Measurement of the flow rate.
The more robust option is to find out the flowrate by working out the volume of water that was
entering the river.
This uses the rainfall data from met office for
two lean season
13. Altimeter – for altitude measurement
GPS – for location coordinate
Camera – for capturing the location image
Current meter – measuring the flow of water
Distance meter Depth meter – depth of the water body
Clinometer
Compass
Hand level
14. Hydro logical studies : Overall rain fall ,run off data ,principle river flow
data , flood char. , from record of govt. department . Min ,avg and flood details
Topological studies :
Tachometric survey and survey required depending
upon the existing info and maps
Geological studies
: Overall geological char. And local features , for
transportation of material
Power demand assessment : Overall power demand scenario in the
project near by area and existing infra for power evacuation
16. Its pre feasibility report
Required to investigate weather project is
technically or financially feasible or not
Aim of PFR is to examine next step to project
formulation
17. conceptual planning,
preparation of project and
equipment layouts,
infrastructure requirement,
environmental and geological studies,
power evacuation arrangement, cost estimates
and economic evaluation
19. Power Potential and Installed capacity: basic principle
based on the P0= QgH where Po is in Watt
Categories of Hydro Plant based on Power generation
Micro : upto 100 kW
Mini : 101 to 2000 kW
Small : 2001 to 25000 kW
Medium : 25001 to 50,000 kW
Large : size above 50 MW
Classification based on available Head
Low head plant
Up to 30 m.
Medium Head Plant
Between 30 m to 300m
High head plant
More than 300 m
20. Classification based on Turbine characteristics
Low specific speed
Between 10 to 60
Medium specific speed
Between 60 to 300
High specific speed
Between 300 to 1000
Classification based on Load Characteristics
Base load plant
Operates continuously and
generate constant power
Peak load plant
Supply power during the peak
hours
Classification based on hydraulic characteristics
Run off river plant
no water storage facility
Storage plant
With poundage facility
Pump storage plant
Act as battery
Tidal plant
21. Turbine Selection
Based on direction of flow of water through the runner
Axial flow
Axial flow
Radial flow
Radial Flow
Tangential flow
Tangential flow
Mixed flow
Mixed flow
Based on action of water on the runner blades
Impulse turbine
Entire pressure energy
converted in to Kinetic energy
Exp: Pelton turbine
Suitable for high head
Reaction turbine
Partially convert pressure in
to kinetic energy
Exp. Francis , Kaplan turbine
Suitable for Low head
25. Turbine specification
Particular
Unit
Rated discharge
Cumecs
Net head at rated discharge
M
Gross head
M
Site elevation
M
System frequency
Hz
Min Head
M
Max Head
M
Arrangement
Horizontal /vertical
Type of turbine
Impulse/ reaction
Unit speed
Rpm
Runner pitch diameter
Mm
Rated output
kW
Intake type
Draft tube
Shafting arrangement
27. Project structure and civil work required
Trench weir
Diversion weir and intake
Desalting tank
Head race channel
Forebay tank, Spillways
Penstock
Power house building
and tailrace channel
29. Effect of geology during civil construction
Impact on Flora and fauna
Effect on fish and other water living beings
Seismic effect during construction
Site photo graph
Various flow duration curve
30. Given data
Parameter
Units
Water level at forbay
607.54 m
Water level at tail race channel
511.21
Gross head
96.33
Head loss
4.33
Net head
92.0 m
100 % dependable discharge
5.10 cumecs
Available power
Turbine efficiency =0.88 & generator efficiency =0.94
Po= 9.81 *0.88*5.10 *92.0
=4050 kW
31. Design discharge for forebay
= 100 % discharge * 1.05
Design discharge for head race
= design dicharge of forebay /0.95
Design discharge for intake channel
= design discharge for head race /0.85
Design discharge for Trench weir
= design discharge for for inatke channel /0.95