Synchronization and Parallel Operation of Alternators

UNIT – I

Chapter – 3

Synchronization and Parallel Operation of Alternators

Syllabus

Phasor diagrams of non salient pole synchronous generator connected to infinite bus - Synchronizing and parallel operation - Synchronizing torque - Change of excitation and mechanical input. Steady state power - Angle characteristics - Two reaction theory - Slip test - Short circuit transients - Capability curves.

Contents            

3.1 Introduction …..May-03, Dec.-12,17 …. Marks 8

3.2 Synchronization of Alternators by Lamp Method ...         Dec.-07, ….. Marks 8

3.3 Synchronization of Three Phase Alternators by Lamps Bright and Dark Method May-08,12,         … Marks 8

3.4 Synchronization by Synchroscope                

3.5 Synchronizing Current and Synchronizing Power.. May-12, Marks 8

3.6 Theory of Cylindrical Rotor Machines … Dec.-08, ….. Marks 8

3.7 Operation at Constant Load with Variable Excitation               

3.8 Operation at Constant Excitation with Variable Load               

3.9 Synchronizing Power        ….. Nov.-96, Oct-97, 98, April-2000, 01,04, May-01, 03,08,          ….. Marks 12

3.10 Blondel's Two Reaction Theory (Theory of Salient Pole Machine) …. Dec.-05, May-06, 07, 09, ….. Marks 10

3.11 Determination of Xd and Xq using Slip Test         …..April-04, May-06,11,13,14 …. Dec.-11, 14,17      …. Marks 8

3.12 Power Output of Salient Pole Alternator (Reluctance Power) … April-01, Dec.-09,11, … Marks 16

3.13 Parallel Operation of Two Alternators         …. Oct.-99, May-04, 07, April-04, Dec.-10, …. Marks 8

3.14 Effect of Change in Excitation … May-04,……. Marks 6

3.15 Effect of Change in Input or Mechanical Torque....         Nov.-04, May-04, 07,13, Dec.-10, …. Marks 8

3.16 Alternators Connected to Infinite Bus Bar           

3.17 Efficiency of Synchronous Machine … May-17 …. Marks 8

3.18 Short Circuit Transients          

3.19 Capability Curves Dec.-06,10, ….. Marks 8

3.20 Two Marks Questions with Answers          

3.21 University Questions with Answers (Long Answered Questions)