Arabian Journal for Science and Engineering, ( ISI ), Volume (39), No (5), Year (2014-4) , Pages (4231-4240)

Title : ( Normal Form Analysis of the Subsynchronous Torsional Interaction with SVC in the Complex Power Systems )

Authors: R. Zeinali Davarani , Reza Ghazi , Naser Pariz ,

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Abstract

Abstract Due to the importance of nonlinear interactions in the complex power systems, in this paper the subsynchronous torsional interactions (SSTI) between turbine-generator shafts and flexible AC transmission system (FACTS) are studied using the nonlinear modal analysis method. Normal Form method is applied to study the nonlinear effects on the SSTI phenomenon in the presence of Static VAr Compensator (SVC) as a commonly used FACTS device. The results show that under stressed conditions the SVC voltage controller gains have an adverse effect on the nonlinear interactions of torsional modes. These effects can lead to severe excitation of torsional oscillations. The study also illustrates that the type of SVC control system model will play an important role in the nonlinear analysis of SSTI, and using a simple PI model is not suitable for nonlinear analysis of SSTI phenomenon. Moreover, in a multi-area power system, the location of SVC and its capacity have significant effects on the severity of nonlinear interactions of torsional modes.

Keywords

FACTS devices · Nonlinear modal analysis · Normal form method · Subsynchronous torsional interaction (SSTI) · Static VAr compensator (SVC)
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@article{paperid:1041162,
author = {R. Zeinali Davarani and Ghazi, Reza and Pariz, Naser},
title = {Normal Form Analysis of the Subsynchronous Torsional Interaction with SVC in the Complex Power Systems},
journal = {Arabian Journal for Science and Engineering},
year = {2014},
volume = {39},
number = {5},
month = {April},
issn = {2193-567X},
pages = {4231--4240},
numpages = {9},
keywords = {FACTS devices · Nonlinear modal analysis · Normal form method · Subsynchronous torsional interaction (SSTI) · Static VAr compensator (SVC)},
}

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%0 Journal Article
%T Normal Form Analysis of the Subsynchronous Torsional Interaction with SVC in the Complex Power Systems
%A R. Zeinali Davarani
%A Ghazi, Reza
%A Pariz, Naser
%J Arabian Journal for Science and Engineering
%@ 2193-567X
%D 2014

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