Grid-Forming Inverter Overcurrent Capability for Suppressing Short-Circuit Impact: Evidence from European Transmission Grids

Grid-Forming Inverter Overcurrent Capability for Suppressing Short-Circuit Impact: Evidence from European Transmission Grids | 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 Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed.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. 6 March 2026 V1 Latest version Share on Grid-Forming Inverter Overcurrent Capability for Suppressing Short-Circuit Impact: Evidence from European Transmission Grids Authors : Ziqian Zhang 0000-0002-5420-8566 [email protected] , Robert Schuerhuber , and Lothar Fickert Authors Info & Affiliations https://doi.org/10.22541/au.177282027.78377495/v1 201 views 76 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract As synchronous generators are progressively replaced by inverter-based resources, power system short-circuit levels decline and fault impact ranges expand. Gridforming (GFM) inverters can restore voltage-sourcecharacteristic fault current, yet their maximum overcurrent capability I max is hardware-limited and remains unspecied in current European grid codes. This paper develops a unied quasi-steady-state short-circuit model integrating synchronous generators, grid-following, and grid-forming inverters, and applies it to real European transmission grid data (PyPSA-Eur / OpenStreetMap) covering 11 regional subsystems. Through systematic I max scanning from 1.0 to 6.0 p.u. under three GFM penetration scenarios and both interconnected and systemsplit conditions, a recommendation extraction framework based on exponential saturation and capacityweighted compliance analysis yields region-specic recommendations of 2.53.5 p.u., forming a three-tier structure that reects grid topology, synchronous generation share, and interconnection level. A comparison of two representative current-limiting strategies conrms that both converge to identical system-level recommendations. These results provide quantitative input for national TSOs developing I max specications under ENTSO-E RfG 2.0. Supplementary Material File (gfmith2026_iet.pdf) Download 21.59 MB Information & Authors Information Version history V1 Version 1 06 March 2026 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords european transmission grid grid code grid-forming inverter overcurrent capability short-circuit analysis Authors Affiliations Ziqian Zhang 0000-0002-5420-8566 [email protected] Institute of Electrical Power Systems, Graz University of Technology View all articles by this author Robert Schuerhuber Institute of Electrical Power Systems, Graz University of Technology View all articles by this author Lothar Fickert Institute of Electrical Power Systems, Graz University of Technology View all articles by this author Metrics & Citations Metrics Article Usage 201 views 76 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Ziqian Zhang, Robert Schuerhuber, Lothar Fickert. Grid-Forming Inverter Overcurrent Capability for Suppressing Short-Circuit Impact: Evidence from European Transmission Grids. Authorea . 06 March 2026. DOI: https://doi.org/10.22541/au.177282027.78377495/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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