Traditional protection methods become ineffective due to the emergence of various types of distributed energy generators or resources (DERs) in the distribution network, especially inverter-interfaced resources. To resolve this issue, the development of intelligent and specialized protection schemes is necessary. In this regard, the present paper proposes a protection scheme using synchrophasor measurements collected using micro-phasor measurement (μ-LPMU) units at both ends of line. The scheme is based on computing superimposed power differential phase angle (DPA) using positive sequence phasors. The investigation have been performed on a seven node network at distribution voltage level, comprising of different types of DERs. The simulations are carried out for network operation in grid-connected and islanded operation modes and for several fault conditions obtained by varying fault types, fault resistance, fault locations, etc. In addition, the scheme has been assessed for critical events that present severe variation in fundamental quantities. The simulation outcomes depict that the suggested superimposed power DPA-based protection technique is viable in identifying faults across a wide range of network operating conditions.
Protection Scheme for Distribution Level Network Employing Synchrophasor Measurements
31.07.2024
575761 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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