we decleared about power house when we want to generate energy from hydro power .

1. Presentation of Summer
Training Kulekhani First
Hydropower Station
Presenting by :-
Birbal Kumar yadav
B.Tech 4th year
Electrical & Electronic Engineering
Dhorsing Makwanpur-Nepal

2. Introduction
 Kulekhani-1 is currently a sole large water storage type hydro-
electric power station in Nepal.
 Its installed Capacity is 60MWwith 2 units of 30 MW each.
 The construction was started in 1977 with the financial
assistance of the World Bank, Kuwait Fund, OPEC Fund, and
the Overseas Economic Co operation fund (OCEF) of Japan.

3. KULEKHANI- I
Rated net head:550 meter
Design discharge: 12.1 m3/s Head race tunnel 6233 m, 2.3 m
diameter
Penstock pipe: 1324 m long, 2.1 – 1.5m diameter steel Pipe
Installed capacity:60 MW
Turbine Generator Set: 2 sets

4. A Typical layout of Hydropower plant

5. POWERHOUSE
Turbine room
Generator
Service areas

6. TURBINE
 Hydraulic turbines are the machines which convert
the energy of flowing water into mechanical energy.
The mechanical energy developed by a turbine is used
to run an electric generator which is directly coupled to
the shaft of the turbine.
Essential Elements of Hydropower Plant

7. TYPE OF TURBINE
Pelton
Rated Speed 600 rpm
Type of Generator Vertical shaft, Synchronous
Capacity 35 MVA
Rated Voltage 11 KV
Power Transformer 11/66KV, 3 phase, 35 MVA, 2 No
Transmission Line
Average Annual :211 GWz (Primary energy 165 GWH and Generation
secondary energy 46 GWH)
Catchments Area:126 sq. km.
Commissioning Date:1977 A.D. - 14th May, 1988
Construction Cost:117.84 million USD
Financed by
World Bank, Kuwait Fund, UNDP, OECF and OPEC Fund

8. MAJOR PARTS OF PELTON WHEEL
 SPEAR AND NOZZLE.
RUNNER WITH BUCKETS.
OUTER CASING.
BRAKE NOZZLE.

9. The generator converts the rotational power from the
turbine shaft into electrical power.
Type of Generator: Vertical shaft, Synchronous
Capacity:35 MVA
Rated Voltage:11 KV
Power Transformer :11/66KV, 3 phase, 35 MVA, 2 Nos
GENERATOR

10. SPEAR AND NOZZLE
To regulate the water flow through the nozzle.
An adjustable spear is for good jet of water and helps to change
nozzle flow passage.
Nozzle which converts hydraulic energy into kinetic energy.
 Present at the downstream end of the penstock.
RUNNER WITH BUCKETS
 Runner consists of the circular disc and it is mounted on
horizontal/vertical shaft.
 Evenly spaced buckets have a shape of double semi-
elliptical ridge known as splitter.

11. BREAK NOZZLE
To stop the runner in a short time.
 Small nozzle directs a jet of water on the back of buckets.
OUTER CASING
 Used to prevent splicing of water and discharging water to
tailrace.

12.  It helps to ensure that the generator
constantly spins at its correct speed.
To illustrate, consider a hydro system
without a governor, it causes the
generator to work harder.
As long as you maintain this
“perfect” load is known as Design
Load, power output will be correct.
GOVERNORS AND CONTROLS

13. An enhanced version of the electronic load
governor, offering not only the ability to regulate
power usage.
Small load adjustments work just like the
electronic governor; the variable electronic switch
regulates power to the ballast loads.
LOAD MANAGEMENT SYSTEMS

14.  It is an option that protects the system from over
speed, which may damage the generator.
It usually means removing all water power from
turbine.
Emergency shutdown of impulse turbines, such as
Pelton wheel, can be very fast because the water jet can
simply be deflected away from the turbine. Since the
water flow doesn’t change, there are no damaging surges.
EMERGENCY SYSTEM SHUTDOWN

15. UTILITY GRID INTERFACE CONTROLS
The grid interconnects very large, public utility
power generation systems.
It monitor the grid and ensure system is
generating compatible voltage, frequency, and
phase.
Automatic disconnection is critical to the safety
of all parties.