It collects the residual mode contributions of various substructures, and then eliminates all interface degrees of freedom of the basic sector. Hence this accurate dynamic reduction fur...

Before the occurrence of fault, ensures the being of sliding mode, and takes this as condition, by detecting if the residual signal is in the regulation sliding area, estimates whether fault occur.

This paper introduces the parameter selection, installation, grounding mode of low-voltage power grid and construction method of residual current operated protective device.