Analysis and Evaluation of Transient Stability in Power Grids with High Solar PV Penetration: A Case Study of Yemen

Analysis and Evaluation of Transient Stability in Power Grids with High Solar PV Penetration: A Case Study of Yemen | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 22 January 2026 V1 Latest version Share on Analysis and Evaluation of Transient Stability in Power Grids with High Solar PV Penetration: A Case Study of Yemen Authors : Marwan Mohammed Azazi 0009-0007-1371-0174 [email protected] , Kanchapogu Vaisakh , and Adel Tatish 0009-0008-9151-669X Authors Info & Affiliations https://doi.org/10.22541/au.176904372.21878683/v1 165 views 80 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract The rapid growth of large-scale photovoltaic generation introduces significant challenges to power system stability, mainly due to reduced system inertia, limited reactive power capability, and changes in power flow patterns. This study investigates the impact of high PV penetration on the transient stability of the Aden region power system in Yemen using a detailed model Developed in the Electrical Transient Analyzer Program (ETAP). To evaluate the dynamic performance of the system, a reduced 40-bus An equivalent model of the original 304-bus Aden grid is developed, integrated with PV penetration levels up to 120 MW. Furthermore, a comprehensive time-domain transient stability analysis (TSA) is conducted to examine system behavior under critical contingency scenarios, including three- phase faults, complete PV plant disconnection, and the outage of a swing generator. Key dynamic variables—such as rotor angle, generator speed, system frequency, bus voltage, and branch power flows—are analyzed in detail to capture the system’s response to disturbances. The results demonstrate that while high PV penetration can provide operational benefits, it also increases the system’s sensitivity to disturbances, particularly those affecting frequency and voltage stability. Overall, the findings indicate that the Aden power grid can accommodate significant PV integration; however, maintaining reliability during future expansions—especially the planned increase to 640 MW—will require the deployment of grid-supportive inverters, smart inverter–based Volt–VAR control, and flexible AC transmission system (FACTS) devicesand dynamic voltage regulation technologies. Supplementary Material File (analysis and evaluation of transient stability in power grids (3).pdf) Download 1.66 MB Information & Authors Information Version history V1 Version 1 22 January 2026 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords fault simulation power system dynamic stability renewable energy sources transformers transient analysis transmission lines and cables Authors Affiliations Marwan Mohammed Azazi 0009-0007-1371-0174 [email protected] University of Aden View all articles by this author Kanchapogu Vaisakh Andhra University View all articles by this author Adel Tatish 0009-0008-9151-669X Damascus University View all articles by this author Metrics & Citations Metrics Article Usage 165 views 80 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Marwan Mohammed Azazi, Kanchapogu Vaisakh, Adel Tatish. Analysis and Evaluation of Transient Stability in Power Grids with High Solar PV Penetration: A Case Study of Yemen. Authorea . 22 January 2026. DOI: https://doi.org/10.22541/au.176904372.21878683/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. 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