engineering

1. PRESENTATION
ON
HYDRO POWER
PLANT
Presented By:-
 AJIJAZ NABI NAJAR
2007350200008
4th Year
Electrical Engineering
Presented To:-
 Dr. Mohd. Ahmed
 Dr. Archana Sharma
Department of Electrical Engineering
Rajkiya Engineer College Bijnor Uttar Pradesh

2. Hydropower Plant

3. CONTENT
S
1. Introduction
2. Site selection
3. Components
4. Power House
5. Circuit Breakers
6. Conclusions

4. INTRODUCTI
ON
 In hydroelectric power station kinetic energy of
stored water is converted into electric energy .
 30% of the total power in world is provided by hydro
power plant.
 The world’s hydro power potential is about 2724
MkW
 Total hydro power potential of India is 84 MkW and
22% of this potential is being tapped by various
existing and ongoing power schemes.
 In India 25.32% of total electricity generation
capacity is produced by hydro power plant.

5. SITE SELECTION FOR A HYDRO POWER
PLANT
 Availability of water
 Water storage
 Water head
 Accessibility of site
 Distance from the load center
 Geological characteristics of site

6. COMPONENT
S
 Dam and Reservoir
 Spillway
 Fore Bay
 Surge tank
 Penstock
 Turbine
 Power house
 Draft tube

7. DAM ANDRESERVOIR
An open-air storage area usually formed by masonry or
earthwork where water is collected and kept in quantity so that it
may be drawn off for use.
 The water reservoir is the place behind the dam where water is
stored.
 The water in the reservoir is located higher than the rest of
the dam structure.
 The height of water in the reservoir decides how much potential
energy the water
 The higher the height of water, the more its potential energy.
 The high position of water in the reservoir also enables it to move
downwards effortlessly.

8. FORE BAY (RESERVOIR)
A forebay is an artificial pool of
water in front of a larger body of
water. The larger body of water
may be natural or human-made.
Forebays have a
number of functions.
 Head = 62 m

9. SPILLWAY
Spillway is constructed to act
as a safety valve. It discharge
the overflow water to the
down stream side when the
reservoir is full. These are
generally constructed of
concrete and provided with
water discharge opening.

10. SURGE TANK
 Surge tank acts as a temporary
reservoir.
 It helps in stabilizing the velocity
and pressure in penstock and
thereby saves penstock from
getting damaged.
 It serve as supply tank to the
turbine in case of increased load
conditions, and storage tank in
case of low load conditions.

11. PENSTOCK
 The penstock is the long pipe or the
shaft that carries the water flowing
from the reservoir towards the
power generation unit, comprised of
the turbines and generator.
 Diameter = 2.4 m
 Length = 108 m
 Material used = Milestone
 Thickness = 12 mm
 Rated Discharge = 4.771 cubic m/s

12. TRASH RACK
A trash rack or debris screen is a wooden or
metal structure, frequently supported by
masonry, that prevents water-borne debris
from entering the intake of a water mill,
pumping station or water conveyance. This
protects water wheels, penstocks, and sluice
gates from destruction during floods.

13. POWER
HOUSE
A power house usually contains following components:
 Hydraulic turbines
 Synchronous generators
 Governors
 MIV(Main Inlet Valve)
 OPU(Oil Pumping Unit)
 GLOP(Generator Lubrication Oil Pump)
 Storage batteries
 Bypass Valve
 Guide Vanes
 Draft Tube

14. MIV(Main Inlet Valve)
Main inlet valve or MIV is a valve which is
installed before water enters into spiral casing
of the hydro turbine..
Bypass Valve
It maintains the water level between MIV and
shaft blades.

15. Guide Vanes
Guide Vanes are fixed grooves
found in turbines that help direct
water, gas, or air around bends at
maximum efficiency. As Impellers
increase or decrease the flow of a
substance through a system, Guide
Vanes ensure that the substance is
passed evenly and as
smoothly as possible.

16. OPU(Oil Pump
Unit)
It used foo operation of
hydraulic equipment's like
MIV , Bypass Valve ,
Braking system etc.
GLOP(Generator Oil Pumping
Unit)
Lubricating oil pumps are used to supply oil to
lubrication points, e.g. for plain bearings. In the
case of circulation lubrication, the lubricating oil
pump takes in an amount of oil from a reservoir,
forces it through the lubrication points and then
feeds it back to the reservoir.

17. SELECTION OF
TURBINE

18. Synchronous Generator
 Output :- 39176 KVA
 No. of Phase :- 3
 4No. of Poles :- 10
 Voltage(AC) :- 6600 V
 Current(AC) :- 343 A.
 Frequency :- 50 Hz
 Speed :- 600 per minute
 Coolant Temp :- 40°c
 Limiting Speed :- 1174 per minute
 Power factor :- 0.85
 Stater Connection :- Star
 Exciting Current(DC) :- 188 A
 Exciting Voltage(DC) :- 267 V
 Altitude :- 2136
 Maximum Temp. of Stator By RTD:-
90°c

19. To reduce the velocity
head losses of the water
To allow the turbine to
be set above the tailrace
to facilitate inspection
and maintenance
DRAFT TUBE
Draft Tube is an empty
structure made beneath
the Turbine.

20.  For Generator Breaker VCB are used.
CIRCUIT BREAKER USED
 For Line Breaker SF6 breaker are used
 For transformer both(VCB and SF6) breaker are used .

21. CONCLUSI
ON
 In order to achieve a growth rate of 7-8 % as envisaged in
National policy of India, it is also required to tap all the small
Hydro Power potential of the country.
 The utilization of small Hydro Power Potential is especially
required in all states where the utilized potential is very low like in
MP and therefore optimum utilization of the same may set up an
stepping up stone for achieving self sufficiency in power sector in
country.

22. Thanks!
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