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Output feedback SSR damping controller design based on modular discrete-time dynamic model of TCSC

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Title Output feedback SSR damping controller design based on modular discrete-time dynamic model of TCSC
 
Creator JOSHI, SR
CHERIYAN, EP
KULKARNI, AM
 
Subject subsynchronous oscillations
thyristor
resonance
capacitor
stability
 
Description This paper presents the use of a modular, sample invariant, six samples per cycle, discrete-time model of a thyristor controlled series capacitor (TCSC) for output feedback-based subsynchronous resonance (SSR) damping controller (SSDC) design. An SSDC is used to alleviate the instability of torsional modes caused by external fixed capacitors used in conjunction with a TCSC. It is found that damping torque analysis-based design of an SSDC using a non-local signal like generator slip is straightforward and the resulting SSDC has a simple compensator structure. On the other hand, the residues and pole-zero configuration with the line current magnitude as a feedback signal are such that it is relatively more difficult to obtain a robust design, especially if several subsynchronous torsional modes are present. Eigenvalue analysis and digital simulation studies indicate that the TCSC model can accurately predict the behaviour of a TCSC with and without a damping controller.
 
Publisher INST ENGINEERING TECHNOLOGY-IET
 
Date 2011-08-03T07:59:54Z
2011-12-26T12:54:06Z
2011-12-27T05:41:31Z
2011-08-03T07:59:54Z
2011-12-26T12:54:06Z
2011-12-27T05:41:31Z
2009
 
Type Article
 
Identifier IET GENERATION TRANSMISSION & DISTRIBUTION, 3(6), 561-573
1751-8687
http://dx.doi.org/10.1049/iet-gtd.2008.0439
http://dspace.library.iitb.ac.in/xmlui/handle/10054/8953
http://hdl.handle.net/10054/8953
 
Language en