Distribution Systems

UNIT - V

Chapter - 7

Distribution Systems

Syllabus

General Aspects - Kelvin’s Law - AC and DC distributions - Techniques of Voltage Control and Powerfactor improvement - Distribution Loss. Trends in Transmission and Distribution: EHVAC, HVDC and FACTS (Qualitative treatment only).

Contents

7.1 Types of Transmission and Distribution Systems

7.2 A.C. Systems .... Dec.-09, May-17,  .... Marks 8

7.3 D.C. Systems .... Dec.-04, .... Marks 8

7.4 Introduction to Distribution Systems

7.5 General D.C. Distribution System

7.6 Schemes of Distribution System .... May-07, 12,16,17, ... Dec.-05,07,09,10,12,13, .... Marks 16

7.7 Design Considerations for Primary Distribution ... May-11, Dec.-13, .... Marks 16

7.8 D.C. Three Wire System .... Dec.-11, .... Marks      16

7.9 Kelvin's Law

7.10 Types of D.C. Distributors

7.11 D.C. Distributor with Concentrated Loads .... Dec.-12, May-14, 18, .... Marks 15

7.12 D.C. Distributor with Uniformly Distributed Load .... Dec.-15,16,    ... Marks 8

7.13 A.C. Distribution

7.14 Stepped and Tapered Mains .... Dec.-12, May-15, .... Marks 4

7.15 Effect of High Voltage in Transmission System .... Dec.-05,08,16, May-07,12 .... Marks 8

7.16 Comparison of Conductor Material in Overhead System .... May-07, 13, Dec.-08, ..... Marks 16

7.17 Comparison of Volume of Copper in Underground System

7.18 Techniques of Voltage Control ... May-15,17, Dec.-17,  ... Marks 15

7.19 Concept of Power Factor Improvement

7.20 Power Factor Improvement

7.21 Power Factor Improvement Devices

7.22 Power Factor Correction Calculation

7.23 Most Economical Power Factor

7.24 EHVAC Transmission  .... Dec.-04,13,14, May-15, .... Marks 13

7.25 High Voltage Direct Current Transmission (HVDC) ... Dec.-04, 06, 08, 09, 11,12, 13,16,17, .... May-08, 10, 13,15,16,18 .... Marks 9

7.26   HVDC Substation         .... May-04,08, ... Dec.-10,  .... Marks 8

7.27 Comparison between HVDC and HVAC Transmission .... May-05 09, 12, Dec.-16, .... Marks 8

7.28   Flexible AC Transmission Systems (FACTS) .... May-07, 10, 16, Dec.-13, .... Marks 16

7.29 FACTS Devices .... Dec.-07,09,14,17, May-12, .... Marks 8

7.30 Two Marks Questions with Answers