Residual Ground Fault Detector for Bipolar LVDC Grids: A Novel Approach towards Selective Protection

LVDC Distribution systems are becoming popular due to the avenue of integrating renewable energy sources on a large scale. Predominant DC based power system architecture has been predicted to serve the needs of a sustainable society that holds the capability to self-generate, share, and trade power produced from renewable energy sources. Bottom ...

A wavelet-based restricted earth-fault power transformer differential protection

This paper proposes a restricted earth fault protection based on the wavelet transform (REFW) for detecting ground faults close to the transformer neutral point (turn-to-ground faults) and supporting the conventional phase differential protection, which presents limitations in this kind of faults. The proposed REFW protection uses only high...

Residual Current Protection of a Meshed DC Distribution Grid with Multiple Grounding Points

Due to the emergence of renewable sources of energy and the progress in sustainable technologies, it could become very interesting in terms of energy savings and cost efficiency to switch the consumer level of the electrical network from AC to DC. This way, less power conversion would be required, and the meshing of the grid would be possible,...

Directional relay co-ordination in ungrounded radial distribution networks using a Real-Time Digital Simulator