## June 18, 2010

### EE 1252 TRANSMISSION AND DISTRIBUTION ANNA UNIVERSITY CHENNAI B.E. ELECTRICAL AND ELECTRONICS ENGINEERING SYLLABUS

ANNA UNIVERSITY CHENNAI: CHENNAI – 600 025
B.E DEGREE PROGRAMME CURRICULUM AND SYLLABUS
ELECTRICAL AND ELECTRONICS ENGINEERING
(Offered in Colleges affiliated to Anna University)
CURRICULUM AND SYLLABUS – REGULATIONS – 2004

EE 1252 TRANSMISSION AND DISTRIBUTION 3 1 0 100
AIM
To become familiar with the function of different components used in Transmission and
Distribution levels of power systems and modelling of these components.
OBJECTIVES
i. To develop expression for computation of fundamental parameters of lines.
ii. To categorize the lines into different classes and develop equivalent circuits for these classes.
iii. To analyse the voltage distribution in insulator strings and cables and methods to improve the same.
1. INTRODUCTION 9
Structure of electric power system: Various levels such as generation, transmission and distribution; HVDC and EHV AC transmission: comparison of economics of transmission, technical performance and reliability, application of HVDC transmission system. FACTS (qualitative treatment only): TCSC, SVC, STATCOM, UPFC.
2. 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.
3. 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, loadability limits based on thermal loading, angle and voltage stability considerations; shunt and series compensation; Ferranti effect and corona loss.
4. INSULATORS AND CABLES 9
Insulators: Types, voltage distribution in insulator string and grading, improvement of string efficiency. Underground cables: Constructional features of LT and HT cables, capacitance, dielectric stress and grading, thermal characteristics.
5. SUBSTATION, GROUNDING SYSTEM AND DISTRIBUTION SYSTEM 9
Types of substations; bus-bar arrangements; substation bus schemes: single bus scheme, double bus with double breaker, double bus with single breaker, main and transfer bus, ring bus, breaker-and-a-half with two main buses, double bus-bar with bypass isolators.
Resistance of grounding systems: Resistance of driven rods, resistance of grounding point electrode, grounding grids; design principles of substation grounding system; neutral grounding.
Radial and ring-main distributors; interconnectors; AC distribution: AC distributor with concentrated load; three-phase, four-wire distribution system; sub-mains; stepped and tapered mains.
L=45 T = 15 Total =60
TEXT BOOKS
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.
REFERENCE BOOKS
1. Luces M.Fualkenberry ,Walter Coffer, ‘Electrical Power Distribution and Transmission’, Pearson Education, 1996.
2. Hadi Saadat, ‘Power System Analysis,’ Tata McGraw Hill Publishing Company’, 2003.
3. Central Electricity Authority (CEA), ‘Guidelines for Transmission System Planning’, New Delhi.
4. ‘Tamil Nadu Electricity Board Handbook’, 2003.

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