A seminar on

Practical Training taken atRANA PRATAP SAGAR HYDROELECTRIC

POWER STATION

PRESENTED BY:Akash Jain4th year, EE12EPREE002

SUBMITTED TO:Mr. Vijay SinghHead of Department Electrical Engineering

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60 Days Summer internship 06/06/2015 UPTO 05/08/2015

Address: - Rana Partap Sagar Power Station Located on Chambal river Near Rawatbhata kota (raj.) Pin code :- 323307

CONTENTS

• Introduction• Classification• Single Line Diagram• Feeders• How it works• Cut section of Turbine and generator• Advantage• Disadvantage• Conclusion

INTRODUCTION

• Rana Pratap Sagar Dam is built on Chambal River.

• There are 7 feeders connected to the Power Stations.

• There are 4 units of generation.

• Each unit generate 11KV, 43MW.

• It operates only in months from August to April

• The generation is decided by the RLDC(Regional Load Dispatch Centre) at Jaipur.

• General Electrical, Canada is the company of manufacturing most of the equipments installed in the Power Station.

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CLASSIFICATION BASED ON HEAD.

High head plant ( < 300 m.)

Medium head plant. (60m to 300 m.)

Low head plant. ( > 60m.)

CLASSIFICATION BASED ON WATER CONDITION.

Flow of water plant.

Storage of water plant.

Pump storage water plant.

Classification of Hydro electric power station.

SINGLE LINE DIAGRAM

FEEDERS• KOTA - I• KOTA - II• GANDHI SAGAR – I• GANDHI SAGAR – II• BHILWARA – I• BHILWARA – II• INDUSTRIAL AREA

1. Reservoir.

2. Catchments area.

3. Dam.

4. Spill ways.

5. SCADA Screen.

6. Fore bay or Intake.

7. Tunnel.

8. Penstock or pipe line.

9. Surge tank.

10. Draft tube.

11. Tail race.

12. Turbine.

Element of Hydro power station,

How Hydro Electric Power Plant Works!

•Water from the reservoir flows due to gravity to drive the turbine.• Turbine is connected to a

generator.• Power generated is

transmitted over power lines.

Water Flow in Francis Turbine

EXCITER

NAME SPECIFICATIONModal 101213Type EVF-8KW 250Speed 125 RPMVolts no loads 250AMP 1000WOUND ShuntPOLES 8

DC EXCITER

Mercury SwitchesThey operate relay and alarm when fault occur in alternator

POWER TRANSFORMER

Name Specification

KVA 55000

Cycles 50

Output 132KV(star)

Cooling

i. Water Cooler

ii. Oil Cooler

 

55000 KVA

60000 KVA

Phase 3

Input 11KV

There are 4 Power Transformers in which only one has buchholz relay and other have PVR for protection

Transformers have both oil forced and water forced cooling system Oil is pumped into veins within water for extra cooling by two motors.

BEARINGS IN ALTERNATOR

Image of installed Guide Bearing

There are two type bearings used in the plant1. Thrust Bearing:-

1. Alternator is placed over this bearing so the weight of alternator comes over the bearing i.e. 418 tons.

2. It is combined by 16 curved parts where each part have 30 springs for sharing load and vibrations.

3. It is placed horizontally along with alternator

2. Guide Bearing:-1. It is placed along with alternator2. It allows 8 thou* space for alternator

vibrations3. It is combined with 16 parts. * 1 thou = thousand part of an inch

BACKUP POWER SUPPLY Diesel Generator

NAME RATINGPOWER 250KVARPM 1500Voltage 415AMP 347.8APower Factor 0.8Frequency 50Hz

Kirloskar Electric, Bangalore, India

Air Core Transformer

11KV/440KV 115KVA

Supply is given to the plant by this transformers when the plant is in working mode or generating mode

1.The plant is simple in construction ,robust and required low maintenance.

2.It can be put in the service instantly.

3.It can respond to changing loads without any difficulty.

4.There are no stand by losses.

5.The running charges are very small.

6.No fuels is burnt.

7.The plant is quite neat and clean.

8.The water after running the turbine can be used for irrigation and other purpose.

Advantage of Hydro power station.

1. The capital cost of generators, civil engineering work etc is high.

2. Long dry seasons may effect the delivery of power.

3. The loss of land under the reservoir.

4. Interference with the transport of sediment by the dam.

5. Problems associated with the reservoir.i. Climatic and seismic effects.

ii. Impact on aquatic ecosystems, flora and fauna.

Disadvantage of Hydro power station.

Conclusion

I would like to conclude that a practical training has been very useful. To learn about practical and theoretical differences while working on large machines and real life problems. It also help to get ready for any problem that may occur at any place and solving it as soon as possible.

QUERIES ????