EX-404 · Power System-I/Official Syllabus
Power System-I (EX-404) - Official Syllabus
1
Unit 1
An overview of Electrical Energy Generation
- General background
- structure and components of power network
- Power generation – Introduction to conventional, non-conventional & distributed generation
- Effect of transmission voltage on power system economy
- Selection of size of feeder
- Comparison of isolated versus interconnected power system
- Problems associated with modern large interconnected power system
- Power Plant Economics - Load curves
- base load
- peak load
- load factor
- demand factor
- diversity factor
- capacity factor
- utilization factor
- cost of electricity
- capital cost
- fuel and operation cost
2
Unit 2
Transmission Line Components & Under Ground Cabling
- Inductance resistance and capacitance of transmission line
- Calculation of inductance for 1-Φ and 3- Φ
- Single and double circuit line
- Concept of GMR and GMD
- Symmetrical & asymmetrical conduction configuration
- Calculation of capacitance for 2 wire and 3 wire systems
- Effect of ground or capacitance
- Capacitance calculation for symmetrical and asymmetrical 1-phase and three phase
- Single and double circuit line
- Charging current
- Transposition of line
- Composite conductor
- Skin and proximity effect
- bundle conductor
- Underground Cable Comparison of cables and overhead transmission lines
- Classification of cables
- requirement of cable construction
- capacitance of single and multi-core cable
- economic core diameter
- dielectric stress in cable
- Grading of cables
- ionization of Heating of cables
- Phenomena of dielectric losses and sheath loss in cables
- Thermal resistance of cables
3
Unit 3
Transmission systems & performance of transmission line
- Various systems of transmission
- effect of system voltage
- comparison of conductor materials required for various overhead systems
- Short, Medium & long transmission line and their representation
- Nominal T, Nominal Л, Equivalent T and equivalent Л
- network models
- ABCD constants for symmetrical &asymmetrical network
- Mathematical solution to estimate regulation & efficiency of all types of lines
- Surge Impedance, loading
- Interpretation of long line equation and its equivalent equation
- Tuned power lines
- Power flow through transmission line
- Circle diagram
- Method of voltage control
- Static & rotating VAR generator
- transformer control
4
Unit 4
Insulator & Mechanical design
- types of conductors used in overhead transmission line
- Types of line supports and towers
- Distribution of conductors over transmission towers
- Spacing between conductors
- Length of span and sag tension calculation for transmission line
- Wind & ice loading
- support of line at two different levels
- string chart
- Sag template
- Stringing of conductor
- Vibration and Vibration dampers
- Insulator Materials used for transmission line insulations
- Types of insulator for overhead transmission line failure of insulator
- Voltage distribution of suspension insulator
- String efficiency
- Shielding and grading
5
Unit 5
Voltage control & Distribution system
- AC single phase, 3 phase, 3wire & 4 wire distribution
- Kelvin’s law for most economical size of conductor
- Substation layout showing substation equipment
- bus bar single bus bar and sectionalized bus bar
- main and transfer for bus bar system
- sectionalized double bus bar system
- ring mains
Reference Books
- Power system Analysis — John Grainger, William Stevenson — McGraw Hill
- Electrical Power System Analysis — C.L. Wadhwa — New Age International
- Power System Engineering — D.P. Kothari, I.J. Nagrath — TMH — II Ed. Reprint 2009
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