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Linear analysis with two linear models of a thyristor-controlled series capacitor

J. Persson, L. Rouco, L. Söder

In this paper two reduced order models of a Thyristor-Controlled Series Capacitor (TCSC) are built. The models are identified from frequency response and time-domain simulation of the detailed original model of the TCSC. The reduced models are linear and with them, linear analysis can be done in a more proper way compared to do linear analysis with the detailed original model of the TCSC that contains non-linearities, for instance the thyristors as well as the non-linear control algorithm. The performances of the linear models are compared with the fully detailed original TCSC-model using linear analysis and time-domain simulations. When doing linear analysis with the original detailed model, eigenvalues derived from the control algorithm of the TCSC are generated. These are ignored in the two linear models.

Keywords: Eigenvalue analysis; Frequency response; Linear analysis; Linearization; Power system dynamics; Small-signal stability; TCSC

2003 IEEE Power Tech Conference Proceedings. Bolonia, Italia. 23-26 Junio 2003

DOI: DOI icon 10.1109/PTC.2003.1304529    

Published: June 2003.

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