How to avoid the impact of TCSC on protection schemes
Division of Graduate Studies and Research, National Technological of Mexico / Technological Institute of Morelia, Morelia, Mexico.
Research Article
Global Journal of Engineering and Technology Advances, 2022, 13(03), 053-065.
Article DOI: 10.30574/gjeta.2022.13.3.0200
Publication history:
Received on 29 October 2022; revised on 12 December 2022; accepted on 15 December 2022
Abstract:
Because of its undoubted advantages, the Thyristor Controlled Series Capacitor (TCSC) is one of the most widely used power-electronic controllers in power systems. However, the TCSC has also been a cause of concern in protective relaying because of its impact on the impedance seen by conventional distance relays, which may lead to an incorrect assessment of fault distance and, consequently, an erroneous relay tripping. To overcome these difficulties, this paper proposes using schemes based on traveling waves for protecting TCSC series compensated transmission lines. Since the method avoids using impedance-based techniques, it is not prone to under-reach or over-reach problems, among others. The approach is based on traveling wave analysis using the discrete wavelet transform. The different case studies show the effectiveness and accuracy of the proposed algorithm in a TCSC environment.
Keywords:
Thyristor-controlled series capacitor; Wavelet transform; Protection algorithm; Traveling wave
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Copyright © 2022 Author(s) retain the copyright of this article. This article is published under the terms of the Creative Commons Attribution Liscense 4.0