Superimposed current based differential protection scheme for AC microgrid feeders

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dc.contributor.authorJoshua, A.M.
dc.contributor.authorVittal, K.P.
dc.date.accessioned2026-02-04T12:26:25Z
dc.date.issued2023
dc.description.abstractLegacy protection schemes face numerous challenges with the emergence of microgrids. Due to the complex controls, the fault responses in microgrids differ from conventional behaviour and vary with the operation mode. In this paper, a differential protection scheme based on fundamental frequency superimposed current phasors is proposed for microgrid feeders. The phasors are extracted using dq components instead of conventional Fourier algorithms. The performance of proposed method is tested for different fault scenarios by carrying out simulations in MATLAB/SIMULINK software. The results confirm that internal faults are detected in a few milliseconds. At the same time, the scheme remains insensitive to external faults with CT saturation and other system disturbances. The proposed scheme is unaffected by the microgrid mode of operation, direction of power flow and DG type. © 2023 Elsevier Ltd
dc.identifier.citationApplied Energy, 2023, 341, , pp. -
dc.identifier.issn3062619
dc.identifier.urihttps://doi.org/10.1016/j.apenergy.2023.121079
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/21844
dc.publisherElsevier Ltd
dc.subjectElectric fault currents
dc.subjectElectric load flow
dc.subjectElectric power system protection
dc.subjectMicrogrids
dc.subjectRelay protection
dc.subjectSoftware testing
dc.subject'current
dc.subjectAbc-dq
dc.subjectBESS
dc.subjectComplex control
dc.subjectDifferential protection
dc.subjectDifferential relay
dc.subjectMicrogrid
dc.subjectProtection
dc.subjectProtection schemes
dc.subjectSuperimposed
dc.subjectMATLAB
dc.subjectemergence
dc.subjectfilter feeder
dc.subjectsaturation
dc.subjectsmart grid
dc.titleSuperimposed current based differential protection scheme for AC microgrid feeders

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