Parallel Node-Breaker Based Transient Stability Simulations Using Multi-Area Thevenin Equivalents

Parallel Node-Breaker Based Transient Stability Simulations Using Multi-Area Thevenin Equivalents | 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 Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed.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. 20 March 2026 V1 Latest version Share on Parallel Node-Breaker Based Transient Stability Simulations Using Multi-Area Thevenin Equivalents Authors : Vibhuti Sahu 0000-0003-4808-527X [email protected] and Gurunath Gurrala Authors Info & Affiliations https://doi.org/10.22541/au.177403095.56320508/v1 93 views 73 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract This paper indroduces space-parallel transient stability simulation (TSS) solver tailored for large-scale Node-Breaker (NB) power system models using the Multi-Area Thevenin Equivalents (MATE) framework. The proposed approach features a distributed Sparse Tableau Approach (STA) enabling efficient breaker-level substation modeling without explicit topology processing, development of MATE equations for NB models, mapping matrices to formulate MATE based network equations for NB models and a weighted graph partitioning technique to ensure balanced parallel workloads. By exploiting both space and task parallelism, the solver achieves time efficient performance even with NB model matrices up to 50 times larger than their Bus-Branch (BB) counterparts. Extensive tests on the Polish 2383-bus, Pegase 9241-bus, and Pegase 13651-bus systems, each configured with Breaker-and-Half schemes, demonstrate execution times of only 2.8s ∼ 3.3s, 23.5s ∼ 28s, 30s ∼ 34.6s respectively for a 10s run on a 64-core, 2.2 GHz, 256 GB RAM compute node. These results establish the proposed MATE-NB solver as a scalable, high-fidelity, and computationally efficient solution for TSS of large-scale NB networks. Supplementary Material File (parallel_nb_based_tss_using_mate_revised.pdf) Download 5.21 MB Information & Authors Information Version history V1 Version 1 20 March 2026 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords multi area thevenin equivalents node-breaker parallel transient stability simulations sparse tableau Authors Affiliations Vibhuti Sahu 0000-0003-4808-527X [email protected] View all articles by this author Gurunath Gurrala View all articles by this author Metrics & Citations Metrics Article Usage 93 views 73 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Vibhuti Sahu, Gurunath Gurrala. Parallel Node-Breaker Based Transient Stability Simulations Using Multi-Area Thevenin Equivalents. Authorea . 20 March 2026. DOI: https://doi.org/10.22541/au.177403095.56320508/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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