Power System [EE 553]
- General Background (4 hours)
- Power System Evolution
- Generation, Transmission and Distribution Components
- Major electrical components in power station; alternators, transformers, bus bars, voltage regulators, switch and isolators, metering and control panels
- Voltage levels, AC vs DC Transmission
- Single phase and three phase power delivery
- Single line diagram representation of a power system
- Mechanical consideration of Transmission (8 hours)
- Overhead Lines
- Line supports, spacing between conductors
- Calculation of sag, equal and unequal supports, effect of ice and wind loadings
- Application of G.P.S system
- Underground cables
- Classification, construction of cables, insulation resistance
- Dielectric stress in single core/multi core cables
- Cable faults and location of faults
- Overhead Lines
- Line parameter calculations (10 hours)
- Inductance, resistance and capacitance of a line
- Inductance of line due to internal & external flux linkages
- Skin & proximity effect
- Inductance of single phase two wire line, stranded & bundled conductor consideration, concept of G.M.R and G. M.D, inductance of 3 phase line; equilateral and unsymmetrical spacing
- Transposition, inductance of double circuit 3 phase lines
- Concept of G.M.R and G. M.D for capacitance calculations
- Capacitance calculations of single phase two wire line, stranded & bundled conductor consideration, capacitance of 3 phase line; equilateral and unsymmetrical spacing, double circuit
- Earth effect in capacitance of a line
- Transmission line performance analysis (6 hours)
- Classification of a lines based on short, medium and long lines
- Representation of ‘Tee’ and ‘Pi’ of medium lines; calculation of ABCD parameters
- Per unit system; advantage and applications
- Voltage regulation & efficiency calculation of transmission lines
- Transmission line as source and sink of reactive power
- Real and reactive power flow through lines
- Surge impedance loading
- Reactive compensation of transmission lines
- Interconnected power system (5 hours)
- Real power/ frequency balance
- Reactive power/ voltage balance
- Computer application in Interconnected power system
- Basic concept of Power system Load flow
- Distribution System (6 hours)
- Distribution system terminology
- Distribution transformer & Load centers
- Rural vs urban distribution
- Radial, loop & network distribution
- Voltage drop computation in a radial Dc & Ac distribution
- Introduction to power system protection (6 hours)
- Power system faults & protection principle
- Fuse as a protection device
- Relays; working and types
- Circuit breaker; working and types
- Basic protection schemes for generators, motors, transformers and transmission lines
- Basic concept of power line carrier communication (PLCC)
References:
- W.D. Stevension “Power System Analysis “ Tata McGraw Hill Publications
- S.N. Singh “Electric power Generation, Transmission & Distribution” Prentece Hall
Evaluation Scheme:
The questions will cover all the chapters of the syllabus. The evaluation scheme will be as indicated in the table below:
Chapters | Hours | Marks distribution* |
1 | 4 | 8 |
2 | 8 | 12 |
3 | 10 | 16 |
4 | 6 | 12 |
5 | 5 | 8 |
6 | 6 | 12 |
7 | 6 | 12 |
Total | 45 | 80 |
*There could be a minor deviation in Marks distribution