EE 9251 TRANSMISSION AND DISTRIBUTION SYLLABUS

ANNA UNIVERSITY CHENNAI :: CHENNAI 600 025 REGULATIONS – 2008
CURRICULUM FROM IV SEMESTERS FOR B.E. ELECTRICAL AND ELECTRONICS ENGINEERING
EE 9251 TRANSMISSION AND DISTRIBUTION

AIM:
To become familiar with the function of different components used in Transmission and Distribution levels of power systems and modeling of these components.

OBJECTIVES:
To develop expression for computation of fundamental parameters of lines.
To categorize the lines into different classes and develop equivalent circuits for these classes.
To analyse the voltage distribution in insulator strings and cables and methods to improve the same.


UNIT I – INTRODUCTION 9
Structure of electric power system: generation, transmission and distribution; Types
of AC and DC distributors – distributed and concentrated loads – interconnection -
HVDC and EHV AC transmission

UNIT II - TRANSMISSION LINE PARAMETERS 9
Parameters of single and three phase transmission lines with single and double
circuits: Resistance, inductance and capacitance of solid, stranded and bundled
conductors: Symmetrical and unsymmetrical spacing and transposition; application of
self and mutual GMD; skin and proximity effects; interference with neighbouring
communication circuits. Typical configuration, conductor types and electrical
parameters of 400, 220, 110, 66 and 33 kV lines.

UNIT III - MODELLING AND PERFORMANCE OF TRANSMISSION LINES 9
Classification of lines: Short line, medium line and long line; equivalent circuits,
attenuation constant, phase constant, surge impedance; transmission efficiency and
voltage regulation; real and reactive power flow in lines: Power-angle diagram; surge-
impedance loading, shunt and series compensation; Ferranti effect and corona loss.

UNIT IV - INSULATORS AND CABLES 9
Insulators: Types, voltage distribution in insulator string and grading, improvement of
string efficiency. Underground cables: Introduction-Types of cables, Capacitance of
Single-core cable, Grading of cables, Power factor and heating of cables,
Capacitance of 3- core belted cable, D.C cables

UNIT V - MECHANICAL DESIGN OF LINES AND GROUNDING 9
Mechanical design of transmission line – sag and tension calculations for different
weather conditions – Methods of grounding – Peterson coil - Substation layout-Tower
Spotting

TOTAL : 45 PERIODS

TEXT BOOKS:
1 C.L.Wadhwa, ‘Electrical Power Systems’, New Age International Pvt., Ltd., 2007
2. D.P.Kothari , I.J. Nagarath, ‘Power System Engineering’,Tata McGraw-Hill
Publishing Company limited, New Delhi, 2007.

REFERENCES:
1. B.R.Gupta, ‘Power System Analysis and Design’, S.Chand, New Delhi, 2003.
2. S.N. Singh, ‘Electric Power Generation, Transmission and Distribution’, Prentice
Hall of India Pvt. Ltd, New Delhi, 2002.
3. Luces M.Fualkenberry ,Walter Coffer, ‘Electrical Power Distribution and
Transmission’, Pearson Education, 1996.
4. Hadi Saadat, ‘Power System Analysis,’ Tata McGraw Hill Publishing Company’,
2003.
5. J.Brian, Hardy and Colin R.Bayliss ‘Transmission and Distribution in Electrical
Engineering’

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