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- W2590039881 abstract "Differential protection is the main protective scheme of busbar in power systems but its operation degrades during current transformer (CT) saturation conditions. In this study, the busbar differential protection scheme is improved by the addition of a new feature extracted from differential current using S-transform analysis. S-transform as a powerful signal processing technique gives a complete visualisation of the signal in both time and frequency domains. The new extracted feature as well as the magnitude of the differential and restraint currents are utilised to increase the security of traditional busbar differential protection scheme. With the addition of this new feature, distinctive regions are created in the feature space which can be separated by an appropriate classifier. In this study, the well-known classifier, i.e. support vector machine is employed to effectively discriminate internal faults from external faults. To evaluate the performance of the proposed method, a part of Iranian 400-kV power system grid is simulated in the PSCAD/EMTDC environment. The transient behaviour of CTs during saturation conditions is simulated based on the precise Jiles–Atherton model. The obtained results justify the superiority of the proposed method in terms of speed and security even in noisy conditions." @default.
- W2590039881 created "2017-03-03" @default.
- W2590039881 creator A5014091579 @default.
- W2590039881 creator A5058638161 @default.
- W2590039881 date "2017-03-29" @default.
- W2590039881 modified "2023-09-24" @default.
- W2590039881 title "Intelligent busbar protection scheme based on combination of support vector machine and S‐transform" @default.
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- W2590039881 doi "https://doi.org/10.1049/iet-gtd.2016.1686" @default.
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