Modelling and Performance of Transmission Lines

UNIT II

Chapter – 2

(a) Modelling and Performance of Transmission Lines

Syllabus

Performance of Transmission lines - short line, medium line and long line - equivalent circuits, phasor diagram, attenuation constant, phase constant, surge impedance - transmission efficiency and voltage regulation, real and reactive power flow in lines - Power Circle diagrams

Contents

2.1 Introduction

2.2 Classification of Overhead Transmission Line. ... May-04, 07,  ... Marks 8

2.3 Representation of Transmission Line

2.4 Terms Related to Performance of Transmission Line .... May-17,       ... Marks 4

2.5 Performance Analysis of Short Transmission Lines ... May-17, Dec.-17, ... Marks 8

2.6 Three Phase Short Transmission Line

2.7 Effect of Load P.F. on Regulation and Efficiency ... Oct-96, 2000, ... May-06, 07, 08, Dec.-12, 17, Marks 16

2.8 Medium Transmission Line        ... Nov.-04, April-96, 98, 99, 2000, ... Dec.-09, 13, 15, 16, May-05, 09, 11, 12,13,14,16,18,  ... Marks  16

2.9 Generalised Circuit Constants of a Transmission Line ... Oct.-O1, May-04, 11, 15, ... Dec.-03, 04, 06, 10, 11, 13, Marks 16

2.10 Long Transmission Lines

2.11 Rigorous Method of Analysis of Long Transmission Line ... May-05, 09, 18, ... Dec.-05, 06,12,13,    Marks 16

2.12 Surge Impedance ... Dec.-12,13,         May-09, ... Marks 6

2.13 Equivalent T and rc Network of Long Transmission Line 

2.14 Power Flow through Transmission Line ... Oct.-98, May-10, 11, 15,... Dec.-15, 17,  ... Marks 16

2.15 Circle Diagram . .. Oct.-98, Dec.-03, 06, 17,        ... May-05, 14, ... Marks 16

2.16 Determination of Capacity for Synchronous Phase Modifier ... Oct.-01, ... Dec.-11, ... Marks 16

2.17 Sending End Power Circle Diagram ... May-16, .... Marks 16

2.18 Active and Reactive Power Flow        ... May-15, Dec.-16, ... Marks 8

2.19 Power System Stability ... April-2000, Dec.-13,  ... Marks 6

2.20 Power Transfer Capability of Transmission Lines ... Dec.-13,  ... Marks 4

2.21 Ferranti Effect ... May-04, Dec.-08, ... Marks 8

2.22 Line Compensation         ... Dec.-05,10, May-12 ... Marks 8

2.23 Two Marks Questions with Answers