An Analysis of the Effect of Fault Location on the Transient Stability of a PV-Integrated IEEE 30 Bus System with FACTS Devices

Mohammed Soufiane Chekembou; Mohammed Omrane; Lakhdar Mokrani; Ali Medjghou; Djemai Naimi; Khaled Miloudi

doi:10.48084/etasr.17081

Authors

Mohammed Soufiane Chekembou Department of Electrical Engineering, LACoSERE Laboratory, Amar Telidji University of Laghouat, Algeria
Mohammed Omrane Department of Electrical Engineering, LACoSERE Laboratory, Amar Telidji University of Laghouat, Algeria https://orcid.org/0000-0001-5599-7651
Lakhdar Mokrani Department of Electrical Engineering, LACoSERE Laboratory, Amar Telidji University of Laghouat, Algeria https://orcid.org/0000-0002-3916-6601
Ali Medjghou Department of Electronics, Faculty of Science, University of Tipaza, Algeria | Department of Electronics, LAAAS Laboratory, University of Batna 2, Algeria https://orcid.org/0000-0002-7686-7474
Djemai Naimi Department of Electrical Engineering, LGEB Laboratory, University of Biskra, Algeria https://orcid.org/0000-0002-5728-488X
Khaled Miloudi Department of Mechanical Engineering, Faculty of Technology, University of El Oued, Algeria https://orcid.org/0000-0003-0790-0231

Volume: 16 | Issue: 2 | Pages: 33351-33358 | April 2026 | https://doi.org/10.48084/etasr.17081

Received: 21 December 2025 | Revised: 11 January 2026 and 19 January 2026 | Accepted: 23 January 2026 | Online: 4 April 2026

Corresponding author: Mohammed Soufiane Chekembou

Abstract

The increasing penetration of PhotoVoltaic (PV) generation in power systems has become a serious concern regarding transient stability under severe fault conditions. In this study, the effect of fault location on the transient stability of a PV-integrated IEEE 30-bus system was analyzed using the Critical Clearing Time (CCT) as a stability index. A 50 MW PV unit was connected to the selected bus, and several three-phase fault scenarios were simulated using MATLAB/Power System Analysis Toolbox (PSAT). To improve system stability, three Flexible AC Transmission System (FACTS) devices, namely, Static Var Compensator (SVC), Static Synchronous Compensator (STATCOM), and Unified Power Flow Controller (UPFC), were implemented and compared. The obtained results show that transient stability is highly sensitive to fault location, even in the absence of PV integration. The presence of PV generation decreases the CCT and incurs high sensitivity to fault clearing time, especially at a weak bus. The application of FACTS devices enhanced the transient stability and increased the CCT for all considered cases. UPFC is the most effective and reliable device for enhancing system stability, followed by STATCOM, whereas SVC has a limited effect, depending on the fault location.

Keywords:

transient stability, fault location, critical clearing time, photovoltaic integration, FACTS devices, IEEE 30-bus system

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