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- W4287560027 abstract "The post-contingency loadability limit (PCLL) and the secure operating limit (SOL) are the two main approaches used in computing the security margins of an electric power system. While the SOL is significantly more computationally demanding than the PCLL, it can account for the dynamic response after a disturbance and generally provides a better measure of the security margin. In this study, the difference between these two methods is compared and analyzed for a range of different contingency and load model scenarios. A methodology to allow a fair comparison between the two security margins is developed and tested on a modified version of the Nordic32 test system. The study shows that the SOL can differ significantly from the PCLL, especially when the system has a high penetration of loads with constant power characteristics, or a large share of induction motor loads with fast load restoration. The difference between the methods is also tested for different contingencies, where longer fault clearing times are shown to significantly increase the difference between the two margins." @default.
- W4287560027 created "2022-07-25" @default.
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- W4287560027 date "2020-12-01" @default.
- W4287560027 modified "2023-09-28" @default.
- W4287560027 title "Comparison of security margin estimation methods under various load configurations" @default.
- W4287560027 doi "https://doi.org/10.48550/arxiv.2012.00336" @default.
- W4287560027 hasPublicationYear "2020" @default.
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