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Author Khaparde, S. A. ♦ Krishna, V.
Source IIT Bombay
Content type Text
Publisher IEEE
File Format HTM / HTML
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science ♦ Technology ♦ Engineering & allied operations
Abstract In the literature, co-ordination of Static Var Compensator (SVC) and Power System Stabilizer (PSS) using generator speed deviation or modal speeds as stabilizing signals is shown to damp the system oscillations. Though such schemes are able to damp the SSR modes for small disturbances, they Pre unable to damp transient SSR due to large disturbances. Here in this report improvement in the control aspect of the SVC at the midpoint of the transmission line is suggested. This scheme attempts different auxiliary signals that include Line Current, Computed Internal Frequency, Bus Angle deviations. A system of configuration similar to IEEE First Bench Mark model is considered, eigen value analysis has been carried out, and results indicate that Bus Angle deviation signal as auxiliary control signal for SVC was able to damp most of the modes leaving some of them still oscillatory. The main feature of the proposed work is to use combination of deviation in speed and electrical power output of the generator as input signals to PSS which operates simultaneously along with SVC. Such simultaneous PSS and SVC scheme is found to improve the damping under large disturbances i.e. the growth of system oscillations is arrested. The simulations are carried out on PSCAD. The efficacy of controllers to damp SSR under steady state and faulted conditions where one of the torsional modes gets excited is presented and discussed.
ISBN 078033714X
Education Level UG and PG
Learning Resource Type Article
Publisher Date 1996-05-16
Page Count 7
Starting Page 302
Ending Page 308