LAXMI INSTITUTE OF TECHNOLOGY · M. L Soni, P. V. Gupta, U. S. Bhatnagar Dhanpat Rai Publication 2...

1

LAXMI INSTITUTE OF TECHNOLOGY SARIGAM

COURSE FILE

Faculty Name : PATEL PINKAL RAGHUBHAI

Subject Name : ELECTRICAL POWER

GENERATION

Subject Code : 2140908

Course Name : B.E (Electrical Engineering)

Semester : 4TH

Session : Dec-April 2019

DEPARTMENT OF ELECTRICAL ENGINEERING

2

Institutional Vision To educate the unreached talents to beacon the nation through research and

innovative technology

Institutional Mission ● To impart seamless education to individual scholars for delivering the highest

quality professionalism and cutting edge research for the benefit of society on a

national and global scale.

● To foster and maintain mutually beneficial partnerships with our alumni,

friends, industry, and local, state, and central governments through public

services assistance and collaborative research.

● To be the centre of excellence for creating holistic citizens inculcated with

ethical, moral and social values in diverse culture of Indian environment.

Departmental Vision

To become a trailblazer in providing education and training in the field of

Electrical Engineering to the ambitious graduates to be proficient in their career.

Departmental Mission

To provide education of high global standards with the able guidance of

dedicated professionals and a state of art ambience.

To motivate the electrical engineers to focus on the eco-friendly renewable

sources of energy.

To impart quality education for enhancing opportunities

4

DEPARTMENT OF ELECTRICAL ENGINEERING

CLASS TIME-TABLE

SEM: 4th

EC-(C-243) TERM: Dec - April 2019 W.E.F: 17/12/2018

DAY↓ TIME→

08:20

to

09:10

09:10

to

10:00

10:10

to

11:00

11:00

to

11:50

12:00

to

12:50

12:50

to

01:35

Monday SUBJECT

FACULTY

ACM(BPD)1(M/C LAB)

EPG(PNP)2(EW/S LAB)

S&S(RA)3(C 249)

FT(SB) ATHE (AAS) DE(NM) SS (RA)

Tuesday SUBJECT

FACULTY

DE(NM)1(C 247)

S&S(RA)2(C 249)

EPG(PNP)3(EW/S LAB)

EPG (PNP) SS (RA) FT(SB) ATHE(AAS)

Wednesday SUBJECT

FACULTY DE(NM) SS(RA) ATHE(AAS) FT(SB) EPG(PNP) ACM (BPD)

Thursday SUBJECT

FACULTY ACM(BPD) DE(NM)

EPG(PNP)1(EW/S LAB)

ACM((BPD)2(M/C LAB)

DE(NM)3(C 247) FT(SB) EPG(PNP)

Friday SUBJECT

FACULTY SS(RA) FT(SB) DE(NM) ACM(BPD)

S&S(RA)1(C 249)

ACM((BPD)3(M/C LAB)

DE(NM)2(C 247)

Saturday SUBJECT

FACULTY ACM (BPD) EPG(PNP) ACM(BPD) SS(RA) DESIGN ENGG.(RA)

Laxmi Institute of Technology , Sarigam Approved by AICTE, New Delhi; Affiliated to Gujarat Technological University, Ahmadabad

Academic Year : 2018-2019

5

SCHEME

SYLLABUS

Unit Topics Teaching

Hours

Module

Weightage

1 INTRODUCTION:

Amount of generation of electric power from Conventional and

non conventional sources of energy in Gujarat and India and

some developed countries of the world.

1 0

2 STEAM POWER STATION:

Schematic arrangement, advantages and disadvantages, choice

of site, efficiency of steam power station, Types of prime

movers, characteristic, speed control & auxiliaries.

Environmental aspects for selecting the sites and locations of

thermal power stations.

4 8

3 HYDRO POWER STATION:

Schematic arrangement, advantages and disadvantages, choice

of site constituents of hydro power plant, Hydro turbine.

Environmental aspects for selecting the sites and locations of

hydro power stations

3 6

4 NUCLEAR POWER STATION:

Schematic arrangement, advantages and disadvantages,

selection of site, types of reactors, Hazards, Environmental

aspects for selecting the sites and locations of nuclear power

stations.

3 6

5 DIESEL POWER STATION:

Introduction, Schematic arrangement, advantages and

disadvantages, Choice and characteristic of diesel engines,

auxiliaries.

3 6

6 GAS TURBINE POWER PLANT: 3 6

Semester Course Title Course Code Theory Paper

L T P

4 Electrical Power

Generation

2140908 4 0 2 70

6

Schematic arrangement, advantages and disadvantages of Gas

turbine power plant. Open cycle and Closed cycle gas turbine

power plant, Combined cycle power plant, Comparison of

various power plants

7 TARIFF AND ECONOMIC ASPECTS IN POWER

GENERATION:

Terms commonly used in system operation, various factors

affecting cost of generation: Load curves, load duration curves,

Connected load, maximum load, Peak load, base load and peak

load power plants, load factor, Plant capacity factor, Plant use

factor, Demand factor, diversity factor, Cost of power plant,

Tariffs

5 10

8 POWER GENERATION BY NON CONVENTIONAL

ENERGY SOURCES:

Introduction: Need of Renewable energy Fossil fuel based

systems

Impact of fossil fuel based systems

Non-conventional energy – seasonal variations

availability Renewable energy – sources and features

Distributed energy systems and dispersed generation (DG)

3 6

9 PHOTOVOLTAIC POWER CONVERSION SYSTEMS:

Solar radiation spectrum.

Radiation measurement

Applications of solar thermal systems 1. Heating 2.

Cooling 3. Drying 4. Distillation 5. Power generation

Solar Photovoltaic (SPV) systems 1. Operating principle

2. Photovoltaic cell concepts 3. Types of solar cells,

fabrication of SPV cells 4. Cell, module, array (Series and

parallel connections) 5. SPV system components and their

characteristics, applications 6. Block diagram of general

SPV system 7. Battery sizing and Array sizing

Applications of Solar Photovoltaic systems 1. Battery

charging 2. Pumping 3. Lighting.

Green Building (Solar – thermal, Solar – PV) 1. Sizing

residential systems 2. Batteries and Inverters.

Present Status of PV in India.

Governmental incentives, Numerical

8 16

7

10 WIND POWER CONVERSION SYSTEM:

Introduction to wind energy

basic principles of wind energy conversion

forces on the blade

power in the wind – maximum power

wind energy conversion – wind data and (qualitative

treatment only) energy estimation

Basic components of wind energy conversion systems

classifications of WECS-HAWT, VAWT, Geared wind

power plants (WPPs), direct-drive WPPs and Hybrid (semi

geared) WPPs

Schemes of electric generation

Squirrel Cage Induction Generators (SCIG), wound rotor

(WRIG), doubly-fed (DFIG), wound rotor synchronous

generator (WRSG), Permanent magnet synchronous

generator (PMSG)

Comparison/ advantages and disadvantages of WECS.

Site selection considerations. Numerical

9 16

11 SUBSTATION:

Classification of Substations, substation equipments,

Specification and selection of equipments, Site selection of

substation

5 10

12 NEUTRAL EARTHING:

Introduction, isolated neutral, earth neutral systems-solid,

resistance, reactance. Arc suppression coil, voltage transformer

and earthing, transformer, earthing systems

5 10

8

List of Reference Books

S.No Book Title Author Publication

1 A course in electrical machine Design A chakrabarti,

M. L Soni, P.

V. Gupta, U.

S. Bhatnagar

Dhanpat Rai

Publication

2 Renewable Energy Technologies Solanki,

Chetan S

PHI Learning,

New Delhi, 2011

3 Wind Power Technology Earnest,

Joshua

PHI Learning,

New Delhi, 2013

4 Renewable Energy Sources for Sustainable

Development

N.S. Rathore

and N. L.

Panwar

New India

Publishing

Agency, New

Delhi

5 Wind Power in Power System Thomas

Ackermann

John Willey

&Sons, 2005

6 Renewable Energy Resources J. Twidell and

T. Weir

E & F N Spon

Ltd, London,

1999

7 Electric Power Generation: Transmission and

Distribution

S. N. Singh PHI Learning,

New Delhi, 2011

8 Electrical Power Dr. S.L. Uppal

9


Department of Electrical Engineering Academic Year : 2018 -2019

ASSIGNMENT – I

Name of the Subject: Electrical Power Generation Date: 08.01.2019

Subject Code : 2140908

S. No Question Remarks

1. Compare conventional energy souce with non conventional

energy sources.

2. Explain the schematic of steam power station in detail with

necessary diagram.

3. Discuss the factor are affect for site selection of thermal power

station.

4. For steam power plant explain the function of: (a) air pre

heater, (b) cooling tower, (c) ESP, (d) ID fan, (e) super heater,

(f) boiler feed pump.

5. Draw and explain schematic arrangement and it's various

component for a hydro power station.

6. Explain the diffrent type of turbine used in hydro power station.

7. Discussed the point to be consider in locationg the site of hydro

power plant. Write the advantages and disadvantages of hydro

power plant.

Date of Submission: 21.01.2019

Name & Sign of Subject In-charge: Pinkal Patel

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ASSIGNMENT – II


Subject Code: 2140908


1. What is nuclear reactor? Describe the various part of nuclear

reactor

2. Enlist different type of nuclear reactor. Explain working of

pressurized water nuclear reactor with suitable diagram.

3. Draw and explain schematic arrangement of diesel power plant.

Give the advantages and disadvantages of diesel power plant.

4. Explain the working of a closed cycle gas turbine power plant

with a schematic diagram.

5. Give schematic arrangement and explain the working of

combined cycle gas power plant.



11



ASSIGNMENT – III




1. Define (i) Connected load (ii) Plant capacity factor (iii)

Diversity factor (iv) Maximum load (v) Plant use factor (vi)

Base load (vii) load curve.

2. What is tariff? Discuss three part tariff

3. What are the sources and features of renewable energy sources?

4. Write advantages of distributed generation

5. Define: (i) solar constant (ii) beam radiation (iii) Diffuse

radiation

6. Define solar cell efficiency. Explain solar photovoltaic cell

principle. Discuss current–voltage (I-V) characteristic of solar

PV cell



12



ASSIGNMENT – IV




1. Derive equation for maximum power of wind turbine.

2. What are the major components of wind energy conversion

systems?

3. Differentiate between Horizontal and Vertical Axis Wind

Turbine

4. Write classification of substations

5. What are the disadvantages of single bus bar scheme? Draw

duplicate bus bar scheme and explain its advantages

6. Why is neutral earthing necessary in power system? How can it

be classified?

7. What are the different methods of neutral grounding? Explain

solid grounding. State its advantage and disadvantages.

8. Explain arc suppression coil earthing in detail.



13


QUESTION BANK

CHAPTER 1

1. What is energy? Write various sources of energy.

2. Compare conventional energy souce with non conventional energy sources.

CHAPTER 2

1. For a steam power station, explain functions of: (i) Air Pre Heater (ii) Cooling Tower

(iii)Economizer

2. Write advantages and disadvantages of Steam power station.

3. Define overall efficiency and thermal efficiency of thermal power station. Why thermal

power station overall efficiency is low?

4. Explain working of thermal power station with labelled schematic diagram. Also state

disadvantages of thermal power station.

5. Discuss the factors are affect for site selection of thermal power Station.

CHAPTER 3

1. Draw and explain neat schematic arrangement of Hydro power station and discuss

function of its constituents.

2. Explain the essential factors which influence the choice of site for a hydro-electric plant.

3. Explain the different types of turbine used in hydro power station

4. Explain the functions of the following : (i)Dam (ii) spillways (iii) surge tank (iv) draft

tube.

5. What is meant by water hammering effect? How it is minimized with the help of surge

tank?

CHAPTER 4

14

1. Explain the essential factors which influence the choice of site for a nuclear power

station.

2. Explain the difference between fusion reaction and fission reaction.

3. Draw block diagram of nuclear power station and explain working of nuclear station

including chain reaction.

4. Enlist different types of nuclear reactors. Explain working of pressurized water nuclear

reactor with suitable diagram.

5. What are the advantages of nuclear power plants? Also write problems associated with it.

6. What is nuclear reactor? Describe the various parts of nuclear reactor.

CHAPTER 5

1. Draw and explain schematic arrangement of diesel power plant.

2. Give advantages and disadvantages of diesel power plant.

CHAPTER 6

1. Why starting motor is used in gas turbine power station? What is the main difference

between open cycle and combine cycle gas power plant?

2. Compare thermal, hydro and nuclear power stations with respect to capital cost, running

cost and standby losses

3. Explain types of gas turbine power plant with diagram. Why compressor is use in gas

turbine power plant?

CHAPTER 7

1. Determine load factor at which the cost of supplying a unit of electricity from a Diesel

and from a Steam station is same if the annual fixed and running charges are as follows :

Diesel Fixed Rs. 300/kW Running Rs. 0.25/kWh Steam Fixed Rs. 1200/kW Running Rs.

0.0625/kWh

2. Define (i) Connected load (ii) Plant capacity factor (iii) Diversity factor (iv) Maximum

load (v) Plant use factor (vi) Base load (vii) load curve.

3. What is tariff? Discuss three part tariff

4. A thermal power station has a maximum demand of 15MW. The annual load factor is

60% and plant capacity factor is 50%. Determine the reserve capacity of the plant.

CHAPTER 8

1. What are the sources and features of renewable energy sources?

2. Write advantages of distributed generation

15

3. Explain Distributed energy systems and Dispersed generation (DG).

CHAPTER 9

1. Define: (i) solar constant (ii) beam radiation (iii) Diffuse radiation

2. Draw and explain the I-V and P-V characteristics of solar photovoltaic cell.

3. What is solar radiation spectrum?

4. Explain pyranometer with diagram.

5. Define solar cell efficiency. Explain solar photovoltaic cell principle. Discuss current–

voltage (I-V) characteristic of solar PV cell

CHAPTER 10

1. Differentiate between Horizontal and Vertical Axis Wind Turbine

2. Explain the need of hybrid systems. Discuss solar-wind hybrid power system with

suitable diagram and also state its advantages.

3. Derive equation for maximum power of wind turbine.

4. What are the major components of wind energy conversion systems?

5. What is total wind power density? State the name of different wind electrical generation

schemes.

CHAPTER 11

1. Write classification of substations

2. Enlist various equipment’s used in substation

3. Compare indoor and outdoor substations.

4. What are the disadvantages of single bus bar scheme? Draw duplicate bus bar scheme

and explain its advantages

CHAPTER 12

1. Why is neutral earthing necessary in power system? How can it be classified?

2. What is resistance grounding? What are its advantages and disadvantages?

3. Explain arc suppression coil earthing in detail.

4. What is arcing ground? Explain arc suppression coil (Resonant) grounding.

5. What are the different methods of neutral grounding? Explain solid grounding. State its

advantage and disadvantages.

6. Define grounding. What are the advantages of neutral grounding?

1

Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER–IV (NEW) - EXAMINATION – SUMMER 2017

Subject Code: 2140908 Date: 06/06/2017 Subject Name: Electrical Power Generation Time: 10:30 AM to 01:00 PM Total Marks: 70 Instructions:

1. Attempt all questions. 2. Make suitable assumptions wherever necessary. 3. Figures to the right indicate full marks.

Q.1 Short Questions 14

1 A nuclear power plant is invariably used as a

(a) peak load plant, (b) base load plant, (c) spinning reserve plant, (d) any of the

above

2 Surge tank is provided for the protection of ……….

3 As steam expands in turbine

(a) its pressure increases, (b) its specific volume increases, (c) its boiling point

increases, (d) its temperature increases.

4 The equipment installed in power plants to reduce air pollution due to smoke is

(a) Induced draft fans, (b) De-super heaters, (c) Electrostatic precipitators,

(d) Re-heaters.

5 Which of the following material can be used as a moderator?

(a) Graphite, (b) Heavy water, (c) Beryllium, (d) Any of the above.

6 A gas turbine works on ………… cycle.

7 Which of the following is not a source of power?

(a) Thermocouple, (b) Photovoltaic cell, (c) Solar cell, (d) Photoelectric cell

8 Most of the solar radiation received on the earth surface is within the range of:

(a) 0.25 to 0.4 micron, (b) 0.4 to 0.8 microns, (c) 0.6 to 0.95 microns, (d) 0.1 to

0.25 microns

9 What is the maximum power efficiency of wind energy system?

10 What is diversity factor?

11 What is plant use factor?

12 What is the difference between system earthing and equipment earthing?

13 For annual compound interest of 8%, sinking fund factor after 20 years will be

………..

14 When single line to earth fault occurs on an ungrounded neutral system, the

capacitive fault current becomes ……. times the normal per phase capacitive

current. (a) 1, (b) 0, (c) 3, (d) √3.

Q.2 (a) Explain the points to be considered while selecting a site for steam power station. 03

(b) Draw the schematic arrangement of diesel power station. 04

(c) Classify the hydro turbine according to operating heads. Explain the hydro turbine

used for high operating heads. 07

OR

(c) With related to steam power station, explain the working of following in detail:

Air pre-heater, Boiler, Super heater, Condenser, Feed water heater, Coal and Ash

handling plant, Boiler Feed Pump.

07

Q.3 (a) List the main stages of nuclear power station stages. Explain any one of the stage 03

2

*************

in detail.

(b) Explain the working principle of closed cycle gas turbine power plant with its

schematic arrangement. 04

(c) A consumer takes a steady load of 250 kW at a power factor of 0.8 lagging for 10

hours per day and 300 days per annum. Which one of the following annual tariffs

would be suitable for this consumer?

Tariff 1: Rs. 1.20 per kWh + Rs. 1,200 per kVA per annum

Tariff 2: Rs. 1.00 per kWh + Rs. 1,200 per kW per annum + 25 paise per kVARh

07

OR

Q.3 (a) Draw the neat schematic arrangement of a nuclear power station. 03

(b) A hydro station has to operate with a mean head of 39 meters and supplied from a

reservoir at the rate of 94 m3/sec. If density of water is 1000 kg/m3 and plant

efficiency is 80%, determine (a) actual plant capacity in MW and (b) yearly actual

output in MWH.

(Hint: Gross plant capacity = 9.81 * water head * weight of water)

04

(c) The load on a power plant on a typical day is as under:

Time 12 NIGHT –

5 AM

5 AM – 9

AM

9 AM –

6 PM

6 PM –

10 PM

10 PM – 12

NIGHT

Load

(MW) 20 40 80 100 20

Plot the load curve and load duration curve. Find the load factor of the plant and

the energy supplied by the plant in 24 hours.

07

Q.4 (a) What are the sources and features of renewable energy sources? 03

(b) List the advantages and disadvantages of Wind Energy Conversion System. 04

(c) Explain working principle, cell concept and block diagram of Solar Photovoltaic

(SPV) system. 07

OR

Q.4 (a) Explain Distributed energy systems and Dispersed generation (DG). 03

(b) What is solar radiation spectrum? Explain direct and diffused radiation. 04

(c) Explain the working of horizontal and vertical axis wind turbines. 07

Q.5 (a) Enlist the application of solar photovoltaic system. Explain any one of them. 03

(b) A 33 kV, 3-phase, 50 Hz, 60 km transmission line has a capacitance to ground of

each line equal to 0.015 μF per km. Determine the inductance and kVA rating of

the Peterson coil.

04

(c) Classify the sub-stations according to service requirement and constructional

features. Compare outdoor substation and indoor substation. 07

OR

Q.5 (a) Discuss the scheme of electrical generation for wind energy system. 03

(b) Explain the importance and specifications of the following equipments applicable

in sub-station: Main bus, Power transformer, Isolators, Circuit Breakers 04

(c) Explain resistance grounding and voltage transformer earthing with their

advantages and disadvantages. 07

1


GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER–IV (NEW) EXAMINATION – WINTER 2017

Subject Code: 2140908 Date:21/11/2017 Subject Name: Electrical Power Generation Time: 02:30 PM TO 05:00 PM Total Marks: 70 Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

MARKS

Q.1* (a) For a steam power plant, explain functions of: (i) Air Pre Heater (ii)

Cooling Tower (iii)ESP. 03

(b) Explain the essential factors which influence the choice of site for a

hydro-electric plant. 04

(c) Enlist different types of nuclear reactors. Explain working of

pressurized water nuclear reactor with suitable diagram. 07

Q.2 (a) Why is the overall efficiency of a steam power station very low? 03

(b) Discuss advantages and disadvantages of diesel power plant. 04

(c) Define (i) Connected load (ii) Plant capacity factor (iii) Diversity factor

(iv) Maximum load (v) Plant use factor (vi) Base load (vii) Peak load. 07

OR

(c) Determine load factor at which the cost of supplying a unit of

electricity from a Diesel and from a Steam station is same if the annual

fixed and running charges are as follows :

Diesel Fixed Rs. 300/kW Running Rs. 0.25/kWh

Steam Fixed Rs. 1200/kW Running Rs. 6.25/kWh

07

Q.3 (a) Differentiate between open and closed gas turbine cycles. 03

(b) Discuss the role of distributed generation in electric power system. 04

(c) Explain in brief geared, direct drive and hybrid Wind Power Plant and

give their comparison. 07

OR

Q.3 (a) Write advantages of distributed generation. 03

(b) Differentiate between Horizontal and Vertical Axis Wind Turbine. 04

(c) Give schematic arrangement and explain the working of combined

cycle gas power plant. 07

Q.4 (a) Discuss advantages and disadvantages of Nuclear power stations. 03

(b) Draw and explain the I-V and P-V characteristics of solar photovoltaic

cell. 04

(c) Explain construction and working of DFIG. 07 OR

Q.4 (a) Explain working principle of solar photovoltaic cell. 03

(b) What are the major components of wind energy conversion systems? 04

(c) Explain concept of green building using solar energy. 07

Q.5 (a) Enlist various equipment’s used in substation.

03

(b) Compare outdoor and indoor substations. 04

(c) Explain arc suppression coil earthing in detail. 07

2

OR

Q.5 (a) Why is neutral earthing necessary in power system? How can it be

classified? 03

(b) What is a transformer sub-station? What are the different types of

transformer sub-stations? Illustrate your answer with a suitable block

diagram.

04

(c) Explain construction & working of solar refrigeration plant with suitable

figure. 07

*************

1


GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER–IV (NEW) - EXAMINATION – SUMMER 2018

Subject Code:2140908 Date:24/05/2018 Subject Name:Electrical Power Generation Time:10:30 AM to 01:00 PM Total Marks: 70 Instructions:


MARKS

Q.1 (a) Define grounding. What are the advantages of neutral grounding? 03

(b) Define overall efficiency and thermal efficiency of thermal power

station. Why thermal power station overall efficiency is low? 04

(c) Explain working of thermal power station with labelled schematic

diagram. Also state disadvantages of thermal power station. 07

Q.2 (a) Why starting motor is used in gas turbine power station? What is the

main difference between open cycle and combine cycle gas power

plant?

03

(b) Draw block diagram of nuclear power station and explain working

of nuclear station including chain reaction. 04

(c) Explain working of hydro power station with suitable schematic

diagram and discuss functions of its constituents. 07

OR

(c) What is tariff? Discuss types of tariff. 07

Q.3 (a) Compare thermal, hydro and nuclear power stations with respect to

capital cost, running cost and standby losses. 03

(b) A thermal power station has a maximum demand of 15MW. The

annual load factor is 60% and plant capacity factor is 50%.

Determine the reserve capacity of the plant.

04

(c) List the solar thermal system applications and explain working of

natural circulation solar water heating system. 07

Q.3 (a) Define: (i) Load factor (ii) Maximum demand (iii) Plant capacity

factor. 03

(b) Draw a well-labelled diagram of horizontal axis wind turbine

(HAWT) generator. What is the function of yaw control and pitch

control mechanism?

04

(c) What is solar photovoltaic system? Discus its major components.

Also state its applications. 07

Q.4 (a) Define: (i) solar constant (ii) beam radiation (iii) Diffuse radiation 03

(b) Draw and explain working of direct type solar dryers. 04

(c) Explain the need of hybrid systems. Discuss solar-wind hybrid

power system with suitable diagram and also state its advantages 07

OR

Q.4 (a) What is total wind power density? State the name of different wind

electrical generation schemes. 03

(b) Discuss the advantages and disadvantages of diesel power station.

Also state applications of diesel power stations. 04

(c) Define solar cell efficiency. Explain solar photovoltaic cell

principle. Discuss current–voltage (I-V) characteristic of solar PV

cell.

07

2

Q.5 (a) Discuss the components of substation in brief. 03

(b) What are the different methods of neutral grounding? Explain solid

grounding. State its advantage and disadvantages. 04

(c) Write classification of substations. 07

OR

Q.5 (a) Compare indoor and outdoor substations. 03

(b) What are the disadvantages of single bus bar scheme? Draw

duplicate bus bar scheme and explain its advantages. 04

(c) What is arcing ground? Explain arc suppression coil (Resonant)

grounding. 07

*************

1


GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER–IV (NEW) EXAMINATION – WINTER 2018

Subject Code:2140908 Date:05/12/2018 Subject Name:Electrical Power Generation Time: 02:30 PM TO 05:00 PM Total Marks: 70 Instructions:


MARKS

Q.1 (a) For a steam power station, explain functions of: (i) Air Pre Heater (ii) Cooling

Tower (iii)Economizer 03

(b) Explain the essential factors which influence the choice of site for a nuclear

power station. 04

(c) Draw and explain neat schematic arrangement of Hydro power station and

discuss function of its constituents. 07

Q.2 (a) Write advantages and disadvantages of Steam power station. 03

(b) Differentiate between open cycle gas turbine and closed cycle gas turbine. 04

(c) Draw and explain schematic arrangement of diesel power plant. Give

advantages and disadvantages of diesel power plant. 07

OR

(c) Determine load factor at which the cost of supplying a unit of electricity from

a Diesel and from a Steam station is same if the annual fixed and running

charges are as follows :

Diesel Fixed Rs. 300/kW Running Rs. 0.25/kWh

Steam Fixed Rs. 1200/kW Running Rs. 0.0625/kWh

07

Q.3 (a) What are the sources and features of renewable energy sources? 03

(b) Explain the difference between fusion reaction and fission reaction. 04

(c) Define (i) Connected load (ii) Plant capacity factor (iii) Diversity factor (iv)

Maximum load (v) Plant use factor (vi) Base load (vii) load curve. 07

OR

Q.3 (a) What is tariff? Discuss three part tariff. 03

(b) Differentiate between Horizontal and Vertical Axis Wind Turbine 04

(c) Explain the need of hybrid systems. Discuss solar-wind hybrid power system

with suitable diagram and also state its advantages. 07

Q.4 (a) Define: (i) solar constant (ii) beam radiation (iii) Diffuse radiation 03

(b) Draw and explain the I-V and P-V characteristics of solar photovoltaic cell. 04

(c) Derive equation for maximum power of wind turbine. 07

OR

Q.4 (a) What is solar radiation spectrum? 03

(b) What are the major components of wind energy conversion systems? 04

(c) Explain pyranometer with diagram. 07

Q.5 (a) Why is neutral earthing necessary in power system? How can it be classified? 03

(b) What is resistance grounding? What are its advantages and disadvantages? 04

(c) Write classification of substations. 07

OR

Q.5 (a) Enlist various equipment’s used in substation 03

(b) Compare indoor and outdoor substations. 04

(c) Explain arc suppression coil earthing in detail. 07 **************

LAXMI INSTITUTE OF TECHNOLOGY · M. L Soni, P. V. Gupta, U. S. Bhatnagar Dhanpat Rai Publication 2...

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Transcript of LAXMI INSTITUTE OF TECHNOLOGY · M. L Soni, P. V. Gupta, U. S. Bhatnagar Dhanpat Rai Publication 2...