alexa TRANSIENT TORSIONAL TORQUE STRESSES REDUCTION ON TURBI
ISSN ONLINE(2278-8875) PRINT (2320-3765)

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering
Open Access

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Research Article

TRANSIENT TORSIONAL TORQUE STRESSES REDUCTION ON TURBINEGENERATOR SHAFTS BY SIMULTANEOUS AC-DC POWER TRANSMISSION

H.Rahman1, B.H.Khan2
  1. Associate Professor, Dept. of EES, Faculty of Engineering &Technology, Aligarh Muslim University, India
  2. Professor, Dept. of EED, Faculty of Engineering &Technology, Aligarh Muslim University, India
 

Abstract

This research paper investigates the effects of line faults, line de-energization and line re-energization on the transient torsional stresses of steam turbine-generator (T-G) units in simultaneous AC-DC transmission system. The concept of damping the transient torsional torque stresses excited due to line faults by utilizing fast controllability and modulation of dc component in simultaneous AC-DC power transmission is also demonstrated. The studies are conducted on a simultaneous AC-DC line system which connects T-G set to a large ac system. For the purpose of comparison the simultaneous AC-DC power transmission system is replaced by an equivalent conventional AC system and performances are evaluated. The studies conclude that transient shaft stresses as a result of simultaneous AC-DC line fault and its subsequent switching events are significantly less severe than those of conventional AC line faults and subsequent switching. PSCAD/EMTDC software is used to carry out for simulation studies.

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