System for maintaining fault-type selection during an...

H - Electricity – 02 – H

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H02H 3/00 (2006.01)

Patent

CA 2589738

A system for maintaining fault-type selection during an out-of-step condition is provided comprising an element for calculating the element reach M; an element for fault type selection; an element for out-of-step detection and blocking; and an element for distinguishing between single-phase-to-ground faults and double-phase-to-ground faults. Single-phase-to- ground faults are distinguished from double-phase-to-ground faults through either a derivative or integration element.

La présente invention concerne un système pour maintenir une sélection selon les défauts, au cours d'un état de rupture de synchronisme, le système comprenant un élément pour calculer la portée M de l'élément; un élément pour réaliser une sélection selon les défauts; un élément pour détecter et bloquer les ruptures de synchronisme; et un élément pour faire la distinction entre des défauts simple phase-masse et des défauts double phase-masse. Les défauts simple phase-masse se distinguent des défauts double phase-masse par un élément de dérivation ou un élément d'intégration.

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