Power System Engineering-I syllabus

A) Basics of power systems: Structure of electrical power system, Different factors associated with generating stations such as Connected load, Maximum demand, Demand factor, Average load, Load factor, Diversity factor, Plant capacity factor, Reserve capacity, Plant use factor, Load curve, Load duration curve, Concept of base load and peak load stations, Advantages of interconnected grid system. B) Tariff: Introduction of Tariff, Tariff setting principles, desirable characteristics of tariff, various consumer categories and implemented tariff such as two-part tariff, three-part tariff (Numerical on two-part and three-part tariff), Power factor tariff, Time of day tariff for H.T and L.T industrial and commercial consumers, Introduction to Availability based tariff (ABT), kVAh tariff (Descriptive treatment only).

A) Underground Cables: Overview on Construction and Classification of Cables, Dielectric stresses in single core cable, Importance of grading of cables. B) Mechanical Design of Overhead lines: Main components of overhead lines, Calculation of sag for equal and unequal supports, effect of ice and wind loading (with its numerical). C) Overhead Line Insulators: Types of insulators (Pin type, Post Insulator, Suspension type, Strain type, Shackle type) their construction and their applications. Potential distribution over suspension insulators, String efficiency, (Numerical on string efficiency and up to four discs), Methods of improving string efficiency (Descriptive treatment only).

Resistance of transmission line, Skin and proximity effect, Factors responsible for production of Skin and proximity effects, Internal and external flux linkages of single conductor, Inductance of single phase two wire line, Concept of G.M.R and G.M.D, Necessity of transposition, Inductance of three phase line with symmetrical and unsymmetrical spacing with transposition, Inductance of bundled conductors.

Electric potential at single charged conductor, Potential at conductor in a group of charged conductors, Capacitance of single-phase line (with and without effect of earth’s surface), Concept of G.M.R and G.M.D for capacitance calculations, need of transposition for capacitance calculations, Capacitance of three phase line with symmetrical and unsymmetrical spacing with transposition. Capacitance of double circuit three phase line with symmetrical (without considering earth effect).

Classification of lines based on length and voltage levels such as short, medium and long lines, Performance of short transmission lines with voltage current relationship and phasor diagram, Representation of medium lines as 'Nominal П' and 'Nominal T' circuits using R,L and C parameters, Ferranti effect, Representation of 'T' and 'П' models of lines as two port networks, Evaluation and estimation of generalized circuit constants (ABCD) for short and medium lines, Estimation of efficiency and regulation of short and medium lines.