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(Final Report)

By

Course: Summer Training [EEN 390]

From [14/6/2015] To [20/8/2015]

Name Of Organization:

Saudi Electricity Company ( Rabigh Power Plant Station )

Name / Mohamed Hasan Allibdi # [1210023] (Electrical Engineering)

Kingdom Of Saudi Arabia

King Abdualziz University

Faculty Of Engineering-Rabigh

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Table Of Contents

Content Page

List Of Tables …………………………….….......... 3

List Of Figures …………………………….…......... 4

Acknowledgments …………………………….…... 5

Abstract …………………………………………….. 6

Introduction…………………. ……………………...

- About The Station.

- Departments Of Station.

- Types Of Power Plant.

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Main Body …………………………………………..

- Industrial Safety.

- Steam Turbine.

- Gas Turbine.

- Generator.

- Transformer.

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Conclusion …………………………………………. 24

References …………………………………….……. 25

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List Of Tables

Table Page

Table (1) Information About Stages Of Station. 8

Table (2) Top 10 Hydroelectric Stations In the World. 12

Table (3) The Effect Of Current In Human Body. 14

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List Of Figures

Figure Page

Figure (1) (Rabigh Power Plant ) 7

Figure (2) (Central Control Panel ) 8

Figure (3) (Alarm Window For Turbine in Central Control) 9

Figure (4) (Steam Power Plant In Rabigh) 10

Figure (5) (Gas Power Plant In Rabigh) 10

Figure (6) (Nuclear Power Plant In Germany) 11

Figure (7) (Hydroelectric Power Plant In Egypt) 11

Figure (8) (Solar Energy Generating Systems In United States) 12

Figure (9) (Wind Farm In United States) 12

Figure (10) (Safety Materials) 13

Figure (11) (Steam Turbine ) 15

Figure (12) (Process Of Steam Turbine ) 15

Figure (13) (Exhaust Pipe Boiler) 16

Figure (14) (Process Of Gas Turbine ) 17

Figure (15) (Generator) 18

Figure (16) (Stator) 19

Figure (17) (Rotor) 19

Figure (18) (Rotor) 20

Figure (19) (Excitation System ) 21

Figure (20) (Oil level & Temperature Meter) 22

Figure (21) (Start up Transformer) 23

Figure (22) (Auxiliary Transformer) 23

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Acknowledgments

First of all , I thank Saudi Electricity Company who has been provide best summer training in

Rabigh Power Plant .

Secondary , We Would like to thank Supervisor Khalid Mohamed Alsaedi who has been our

trainer in Gas Unit.

Thirdly , We Would like to thank Supervisor Obaid Abed Almould who has been our trainer in

Steam Unit.

Finally , We Would like to give very special thank to our parents for their social support and great

encouragement during our training.

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Introduction

1.About The Station .

Rabigh station is the main nerve to generate electricity in the regions of Mecca and Medina which

represent more than 70% of the generating capacities of the Western Region . It is located 145 Km

north of Jeddah province and total area of the station (6.250.000) square meters. The station linked

to the main load centers of the branch of the company in western power transmission lines of high

voltage 380 KV.

Figure (1) (Rabigh Power Plant )

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It has been establishment of the station in six stages :-

Stage Factory Operating Units Fuel Power

First MITSUBISHI 1406H 4 Heavy Oil 1040 MW

Second ABB 1411H 2 Light Oil 700 MW

Third MITSUBISHI 1416H 2 Heavy Oil 532 MW

Fourth General Electric 1418H 1 Light Oil 380 MW

Fifth General Electric 1430H 16 Light Oil 976 MW

Sixth General Electric 1431H 12 Light Oil 732 MW Table (1) Information About Stages Of Station .

2.Departments Of The Station .

Operation Department .

It consists of control section their work is limited to the reception operation and closure from the

control center . Control in generating units through Central Control Panel.

Figure (2) (In Central Control Panel )

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Figure (3) (Alarm Window For Turbine in Central Control)

Maintenance Department .

It consists of two workshop Mechanical and Electrical Workshops .It working on the maintenance

of generation units and electrical devices . Most of maintenance periods are in the winter period.

In the summer most of units in semi-permanent work.

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3.Types Of Power Plant Stations.

1) Steam Power Plant.

Figure (4) (Steam Power Plant In Rabigh )

2) Gas Power Plant.

Figure (5) (Gas Power Plant In Rabigh )

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3) Nuclear Power Plant.

Figure (6) (Nuclear Power Plant In Germany )

4) Hydroelectric Power Plant.

Figure (7) (Hydroelectric Power Plant In Egypt )

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Top 10 Hydroelectric Stations In The World

Rank Station Country Operating Power Capacity

1 Three Gorges China 2012 22.5GW

2 Itaipu Brazil 1984 14GW

3 Guri Venezuela 1978 10.2GW

4 Tucurui Brazil 1984 8.3GW

5 Grand Coulee US 1941 6.8GW

6 Sayano-Shushenskaya Russia 1978 6.4GW

7 Longtan China 2009 6.3GW

8 Krasnoyarsk Russia 1972 6GW

9 Robert-Bourassa Canada 1979 5.6 GW

10 Churchill Falls Canada 1971 5.4 GW Table (2) Top 10 Hydroelectric Stations In The World

5) Solar Power Plant.

Figure (8) (Solar Energy Generating System In United States )

6) Wind Power Plant.

Figure (9) (Wind Farm In United States )

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Main Body

1.Industrial Safety.

- The Goal From Industrial Safety.

Run the power plant in safe manner while maintaining the safety of persons , property and the

environment.

- The Risks.

Noise – Electricity – Fall and Slide – Rises- Gas – Rotating Equipment – The Weather – Heat and

Transportation .

Some Of The Dangers Of The Work Environment.

1. Ventilation.

2. Noise.

3. Lighting.

4. Radiation.

Risk Engineering.

1. Mechanical Risks.

2. The Risk Of Hand Tools.

3. The Risk Of Plan And Machinery.

Figure (10) (Safety Materials )

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The Effect Of The Current In The Human Body.

Current Reaction

Below 1 mA

Generally not perceptible

1 mA

Faint Tingle

5 mA

Slight shock felt. Not painful but disturbing. Average individual can

let go. Strong involuntary reactions can lead to other injuries.

6 to 25 mA

(women)

Painful shocks. Loss of muscle control.

9 to 30 mA

(men)

The freezing current or “let go” range. If extensor muscles are excited

by shock, the person may be thrown away from the power source.

Individuals cannot let go. Strong involuntary reactions can lead to

other injuries

50 to 150 mA Extreme pain, respiratory arrest, severe muscle reactions. Death is

possible.

1.0 to 4.3 A. Rhythmic pumping action of the heart ceases. Muscular contraction

and nerve damage occur; death is likely

10 A Cardiac arrest, severe burns, death is probable.

Table (3) The effect of current in human body

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2. Steam Turbine.

A steam turbine generator works by heating water to extremely high temperatures until it is

converted into steam, then the steam energy is used to rotate the blades of a turbine to create

mechanical or rotational energy.

This rotational energy caused by the high pressured steam turbine is used to generate electricity

from an attached generator.

Figure (11) (Steam Turbine )

Figure (12) (Process Of Steam Turbine )

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One Of Important Thing In Steam Turbine .

- Boiler.

It is place where it produces steam roasted with high temperature and high pressure . It represent

the larges building in power station and easily recognizable just by looking at it topped the exhaust

pipe which reaches a length of more than 200 meters .

Figure (13) (Exhaust Pipe Boiler )

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3. Gas Turbine.

To generate electricity, the gas turbine heats a mixture of air and fuel at very high temperatures

causing the turbine blades to spin. The spinning turbine drives a generator that converts the energy

into electricity.

Figure (14) (Process Of Gas Turbine )

Main Prats Of Gas Turbine.

1. Compressor.

Inside it. The air needed to ignite the fuel pressure.

2. Combustion Chamber.

Pumping fuel with compressed air and then lit to result in products of combustion pressure very

high.

3. Turbine.

Convert thermal energy to mechanical energy.

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4. Generator.

The device which converts mechanical energy to electrical energy .

Figure (15) (Generator )

Generator

Mechanical Electrical

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Main Prats Of Generator.

1. Stator is the largest and heaviest single part of the turbo generator.

Figure (16) (Stator )

2. Rotor is a moving component of an electromagnetic system in the electric motor, electric

generator, or alternator. Its rotation is due to the interaction between the windings.

Figure (17) (Rotor )

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Figure (18) (Rotor )

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Excitation System

The excitation system for the turbo generator consists of:

Exciter machine.

Rectifier unit .

Control equipment.

The arrangement permits the necessary excitation current to be fed to the field winding of the

main machine without any brush contact.

The shaft of the main revolving field machine carries the rotor of the ROTADUCT revolving-

armature exciter machine. The stator of the exciter machine contains the stationary exciter poles,

and its rotating armature contains a three-phase winding with rotating silicon diodes which rectify

the armature current. Connecting leads run through a corresponding bore in the shaft to feed the

DC current to the field winding of the main machine.

The control equipment compares at its inputs the reference value against the actual values from

the main machine (for the parameters: voltage, reactive power or power factor etc.) and alters the

necessary exciter current to the exciter machine as function of the difference between actual and

reference values. The necessary excitation energy is supplied from a permanent-magnet generator

(PMG) flanged onto the exciter machine.

Figure (19) (Excitation System )

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5.Transformers.

Is Static device use to stepup or stepdown electrical voltage.

There are three kinds of transformers in power station.

Start Up Transformer.

Auxiliary Transformer .

Emergency Transformer.

Main Prats Of Transformer.

1.Primary Winding.

2.Secondary Winding.

3.Core.

4.Radiator.

5.Bushing.

6.Core.

7.Oil Temperature Meter.

8.Oil Level Meter.

9.Silica Gel.

Figure (19) (Oil level & Temperature Meter )

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Start Up Transformer. The station start up transformer is a power transformer used to connect the power station to the

transmission system so that power is available for the plant equipment when the plant being

started . It does step up from 21.8 kV to 380kV

Figure (20) (Start Up Transformer )

Auxiliary Transformer. It does step down from 21.8 kV to 6.9kV to support the unit .

Figure (21) (Auxiliary Transformer )

Emergency Transformer. It uses in Blackout cases where you need in all power plants for the first source to run turbines .

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Conclusion

In conclusion, during our summer training period we have learned many interested things related

to our major .in this summer training also we have learned many things related to the work itself

such as the communication with other people and employees and how to discover the problem and

solve it in proper way as team work.

We have taken courses in our college really helped us to understand and work with our summer

training such as EEN 330 and EEN 340 which related to power systems. In the training we are

facing many strange things like the huge transformers, capacitors banks, bus bars, Scads

(communication device)and breakers. It was a good idea and good chance to expose to the work

environment that we will have to face and practice after we graduate. In our point view, two

months is not enough to learn everything but at leastwe can see how the work is is going on in that

plant.

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