MID SEM -August- 2018 Electrical power System-1

1 Supply Systems: 

Electric supply system, Typical AC power supply Scheme, Comparison of DC and AC transmission, Advantages of high transmission voltage, Various system of power transmission, Comparison of conductor material in overhead system, Comparison of conductor material in underground system, Comparison of various systems of transmission, Elements of a transmission line, Economics of power transmission, Economical choice of conductor size, Economic choice of transmission voltage, Requirement of satisfactory electric supply.

 2 Mechanical Design of Transmission Lines: 

Main components of over head lines, Conductor materials, Line supports, insulators, Types of insulators, Potential distribution over suspension insulators, String efficiency, 

 3 Inductance and Resistance of Transmission Line:

 Introduction, Definition of Inductance, Flux Linkages of an isolated current carrying conductor, Inductance of a single phase two wire line, Conductor types, Flux Linkages of one conductor in group, Inductance of composite conductor lines, Inductance of three phase lines, Double circuit three phase lines, Bundled conductors, Resistance, Skin effect and Proximity effect, Magnetic field induction.  

4 Capacitance of Transmission Lines:

Introduction,Electric field of a long straightconductor, Potential difference between two conductors of a group of parallel conductors, Capacitance of a two wire line,

5.Representation of power system component: 

Introduction, Single phase Representation of balanced three phase networks, The one line diagram and impedance or reactance diagram, Per unit system, Advantages of pu system, Per unit representation of a transformer, Per unit impedance diagram of a power system, Complex power, The steady state model of synchronous Machine,Power factor and power control, Salient pole synchronous generator, Loading capability diagram  Power transformer, Transmission of electric power, System protection , Representation of load.