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| Diploma in Electrical Engineering Notes |
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Old Course (2014)
Power Stations
EG2219 EE
Total: 4 hour /week
Year: II Lecture: 3 hours/week
Semester: II Tutorial: 1 hours/week
Practical: hours/week
Lab: hours/week
Course Description:
The course deals with the characteristics, features and classifications of electrical power stations
Course Objectives:
After completing this course the students will be able to:
1. Gain knowledge about the various power system components
2. Understand the various power generating sources and their operating features
3. Understand the different Excitation systems and AVR used in alternators
4. Know the basic concepts of bus bar arrangements at substations
Course contents:
Unit 1: Introduction [4]
1.1 Historical background of electricity generation (international and Nepalese
scenario), early electrical system and voltage level
1.2 Schematic layout modern power system: generation, substation, transmission,
distribution units
1.3 Need of voltage transformation
1.4 Significance of standard frequency used in A.C. system
Unit 2: Generation of Electrical Energy [4]
2.1 Advantage of Electrical energy in comparison with other form of energy
2.2 Type of generations: base load plant, peak load plant, renewable power plant
2.3 Typical layout for converting an energy into electrical energy
2.4 Sources of energy to be converted into electrical energy
• Hydro energy to electrical energy
• Thermal energy to electrical energy
• Renewable energy sources
2.5 Economic of power generation: plant capacity factor, plant utilization factor.
Reserves, tariff
Unit 3: Power Plants [14]
3.1 Types of power plants
3.2 Diesel power plant
• Working principle and plant layout
• Component and accessories
• Manual and automatic starting
• Operation and maintenance features
• Applications
3.3 Hydro power plant
• Working principle and plant layout • Dam, reservoir, forbay, spillway power cannel, tunnel, surge tank, penstock
and other accessories
• Turbines and their classifications
• Sitting and sizing concept
• History of hydro power plant in Nepal
3.4 Thermal power plant
• Basic working principle and plant layout
• Component and accessories
• Operation and maintenance features
• Applications
Unit 4: Transmission and Distribution system [4]
4.1 Transmission System:
• Introduction, necessity of TS
• Transmission Layout, voltage level, insulation, right of way
• A.C. and D.C applications: introduction and comparison
• Transmission system in Nepalese context
4.2 Distribution system
• Introduction, necessity of DS
• Distribution Layout, voltage level
• Distribution system in Nepalese context
Unit 5: Major accessories in power plants [6]
5.1 Excitation system
• D.C. excitation system
• A.C. excitation system
• brushless excitation system
5.2 Automatic Voltage regulator construction and operation
5.3 Brief description of switch yard; Bus Bars, Circuit breakers, lighting arrestors
locations
Unit 6: Substations [13]
6.1 Necessity of substations
6.2 Substation layouts, incoming and outgoing line arrangements
6.3 Grid substations and distribution substations
6.4 Major equipment at substations
6.5 Selection of transformers based on applications
6.6 Fault limiting reactors
6.7 Circuit breakers, isolators, Lighting arrestors and other accessories
6.7 Bus bar arrangement
• Single bus bar
• Duplicate bus bars
• Ring main bus bars
• Sectionlization of bus bars
6.8 Communication system telephone, basic concept of PLCC and SCADA system
6.9 Switching stations
New Course (2022)
EG2208EE
Year: II Total: 4 hours /week
Part: II Lecture: 4 hours/week
Tutorial: hour/week
Practical: hours/week
Lab: hours/week
The course deals with the characteristics, features and classifications of electrical power
stations.
After completing this course, the students will be able to:
1. Explain various power system components
2. Describe various power generating sources and their operating features
3. Diagnose different Excitation systems and AVR used in alternators
4. Illustrate bus bar arrangements at substations
Theory
1.1. Historical background of electricity generation (international and Nepalese
scenario), early electrical system and voltage level
1.2. Schematic layout modern power system: generation, substation, transmission,
distribution units
1.3. Need of voltage transformation
1.4. Significance of standard frequency used in A.C. system
2.1. Advantage of Electrical energy in comparison with other form of energy
2.2. Type of generations: base load plant, peak load plant, renewable power plant
2.3. Typical layout for converting an energy into electrical energy
2.4. Sources of energy to be converted into electrical energy
2.4.1. Hydro energy to electrical energy
2.4.2. Thermal energy to electrical energy
2.4.3. Renewable energy sources
2.5. Economic of power generation: load factor, plant capacity factor, plant utilization
factor, reserves capacity.
3.1. Types of power plants
3.2. Diesel power plant
3.2.1. Working principle and plant layout
3.2.2. Component and accessories
3.2.3. Manual and automatic starting
3.2.4. Operation and maintenance features
3.3. Hydro power plant
3.3.1. Working principle and plant layout
3.3.2. Dam, reservoir, forbay, spillway power cannel, tunnel, surge tank, penstock
and other accessories
3.3.3. Turbines and their classifications
3.3.4. Sitting and sizing concept
3.3.5. History of hydro power plant in Nepal
3.4. Thermal power plant
3.4.1. Basic working principle and plant layout
3.4.2. Component and accessories
3.4.3. Operation and maintenance features
3.4.4. Applications
4.1. Transmission System:
4.1.1. Introduction, necessity of Transmission System
4.1.2. Transmission Layout, voltage level, insulation, right of way, conductor
spacing
4.1.3. A.C. and D.C applications: introduction and comparison
4.1.4. Transmission system in Nepalese context
4.2. Distribution system
4.2.1. Introduction, necessity of Distribution System
4.2.2. Distribution Layout, voltage level
4.2.3. Distribution system in Nepalese context
5.1. Excitation system
5.1.1. D.C. excitation system
5.1.2. A.C. excitation system
5.1.3. brushless excitation system
5.2. Automatic Voltage regulator construction and operation
5.3. Locations Brief description of switch yard; Bus Bars, Circuit breakers, lighting
arrestors
6.1. Introduction to switchyard
6.2. Necessity of substations
6.3. Substation layouts, incoming and outgoing line arrangements
6.4. Grid substations and distribution substations
6.5. Major equipment at substations
6.6. Selection of transformers based on applications
6.7. Fault limiting reactors
6.8. Circuit breakers, isolators, Lighting arrestors and other accessories
6.9. Bus bar arrangement
6.9.1. Single bus bar
6.9.3. Ring main bus bars
6.9.4. Sectionalization of bus bars
6.10. Communication system telephone, basic concept of PLCC and SCADA system
6.11. Switching stations
Final Note:
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