H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 9/56 (2006.01)
Patent
CA 2596192
The invention relates to a method and device for determining a switching time of an electric switching device. An electric switching device comprises an interrupter link (1). A first line section (2) and a second line section (3) can be connected and disconnected by means of said interrupter link (1). In order to determine a switching time, the temporal progression of a driving voltage (A) is determined in the first line section (2). In addition, a temporal course of an oscillator voltage (B, B1) appearing in the second line section (2) is determined. Potential switching times are determined at the voltage zero crossings of a resulting voltage (C, C1). The selection of the potential switching times ensues while evaluating the rises of the driving voltage (A, A1) and of the oscillator voltage (B, B1) or of the polarity of the oscillating current (D).
Un appareil de commutation électrique comprend un segment de rupture (1) servant à relier et à séparer un premier segment de ligne (2) et un deuxième segment de ligne (3). Pour déterminer l'instant de commutation, on détermine la courbe temporelle d'une tension de commande (A) dans le premier segment de ligne (2). Puis, on détermine une courbe temporelle d'une tension oscillante (B, Bl) apparaissant dans le deuxième segment de ligne (3). On détermine des instants de commutation potentiels aux passages par zéro d'une tension résultante (C, Cl). On sélectionne les instants de commutation potentiels en évaluant les augmentations de la tension de commande (A, Al) et de la tension oscillante (B, Bl) ou la polarité du courant oscillant (D).
Pilz Georg
Schegner Peter
Wallner Christian
Aktiengesellschaft Siemens
Smart & Biggar
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