Power System Analysis I

Syllabus

1. Introduction to Power System (4 hours)
   1. Structure of power system; Layout, generation, transmission and distribution components
   2. Basic introduction to energy sources; conventional and non-conventional
   3. History and current scenario of power system in the world and Nepal
   4. Voltage levels of generation, transmission and distribution, AC vs DC transmission
2. Overhead and Underground Transmission (9 hours)
   1. Line supports, spacing between conductors
   2. Transmission line conductor materials, ACSR and HTLS conductors
   3. Stranded and bundled conductors
   4. Overhead line insulators and types
   5. Voltage distribution along string of suspension insulator, string efficiency
   6. Classification and construction of underground cables, insulation resistance of single core
   7. Dielectric stress in single core cables, most economical conductor size in cable
   8. Types of cable faults; Murray loop test, Varley loop test
3. Computational Technique (8 hours)
   1. Single phase representation of three phase system
   2. Impedance and reactance diagram
   3. Per unit system; representation, calculation of base values, advantage and applications
   4. Complex power
   5. Direction of power flow
4. Line Parameter Calculations (10 hours)
   1. Inductance, resistance and capacitance of line
   2. Inductance due to internal and external flux linkage
   3. Skin and proximity effect
   4. Inductance of single phase two wire line, flux linkage of conductor in group, inductance of composite conductor lines, stranded and bundled conductor consideration
   5. GMR and GMD concepts, inductance of three phase line; equilateral and unsymmetrical spacing
   6. Transposition, inductance of double circuit three phase lines
   7. GMR and GMD for capacitance calculations
   8. Capacitance calculations of single phase two wire line, stranded and bundled conductor consideration
   9. Capacitance of 3-phase line; equilateral and unsymmetrical spacing, double circuit
   10. Effect of earth on transmission line capacitance
5. Transmission Line Modeling (6 hours)
   1. Classification of lines; short, medium and long lines
   2. Short transmission line; evaluation of ABCD parameters
   3. Representation of Tee and Pi of medium lines; calculation of ABCD parameters
   4. Distributed parameter model of long lines; calculation of ABCD parameters
   5. Equivalent Tee and Pi of long lines
6. Performance Analysis (8 hours)
   1. Sending and receiving end quantities analysis
   2. Voltage regulation and efficiency calculation of transmission lines
   3. Transmission line as source and sink of reactive power, transmission line capability
   4. Real and reactive power flow through lines
   5. Surge impedance loading
   6. Ferranti effect
   7. Voltage profile and reactive power compensation