Dynamic Quadrilateral Characteristic-Based Distance Relays for Transmission Lines Equipped with TCSC

Ghada M. Abo-Hamad, Doaa Khalil Ibrahim, Essam Aboul Zahab and Ahmed F. Zobaa
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Ghada M. Abo-Hamad: Department of Electrical Power Engineering, Faculty of Engineering, Cairo University, Giza 12613, Egypt
Doaa Khalil Ibrahim: Department of Electrical Power Engineering, Faculty of Engineering, Cairo University, Giza 12613, Egypt
Essam Aboul Zahab: Department of Electrical Power Engineering, Faculty of Engineering, Cairo University, Giza 12613, Egypt
Ahmed F. Zobaa: College of Engineering, Design and Physical Sciences, Brunel University London, Uxbridge UB8 3PH, UK

Energies, 2021, vol. 14, issue 21, 1-23

Abstract: A two-fold adaptive dynamic quadrilateral relay is developed in this research for protecting Thyristor-Controlled Series Compensator (TCSC)-compensated transmission lines (TLs). By investigating a new tilt angle and modifying the Takagi method to recognize the fault zone identifier, the proposed relay adapts its reactive reach and resistive reach separately and independently. The investigated tilt angle and identified fault zone use the TCSC reactance to compensate its effect on the TL parameters and system homogeneity. Excessive tests are simulated by MATLAB on the non-homogenous network, IEEE-9 bus system and further tests are carried out on IEEE-39 bus system in order to generalize and validate the efficiency of the proposed approach. The designed trip boundaries are able to detect wide range of resistive faults under all TCSC modes of operations. The proposed approach is easy to implement as there no need for data synchronization or a high level of computation and filtration. Moreover, the proposed adaptive dynamic relay can be applied for non-homogeneity systems and short as well as long TLs which are either TCSC-compensated or -uncompensated TLs.

Keywords: distance relay; fault resistance; quadrilateral characteristic; resistance and reactance elements; Thyristor Controlled Series Compensator (TCSC) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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