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Simulation of unified static VAR compensator and power system stabilizer for arresting subsynchronous resonance

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Title Simulation of unified static VAR compensator and power system stabilizer for arresting subsynchronous resonance
 
Creator KHAPARDE, SA
KRISHNA, V
 
Description 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.
 
Publisher I E E E
 
Date 2011-10-27T13:15:55Z
2011-12-15T09:12:40Z
2011-10-27T13:15:55Z
2011-12-15T09:12:40Z
1996
 
Type Proceedings Paper
 
Identifier PROCEEDINGS OF THE 20TH INTERNATIONAL CONFERENCE ON POWER INDUSTRY COMPUTER APPLICATIONS,302-308
0-7803-3714-X
http://dspace.library.iitb.ac.in/xmlui/handle/10054/16308
http://hdl.handle.net/100/2810
 
Source 20th International Conference on Power Industry Computer Applications (PICA 97),COLUMBUS, OH,MAY 11-16, 1997
 
Language English