H - Electricity – 02 – H
Patent
H - Electricity
02
H
H02H 3/04 (2006.01)
Patent
CA 2677029
The invention relates to an apparatus for monitoring discharge processes in a conductor (1) of a medium-voltage or high-voltage system. Said apparatus comprises at least one transformer (2, 3) which is suitable for detecting a current (I) flowing in the conductor (1). The at least one transformer (2, 3) is connected to a device (4) for monitoring the discharge process. In order to be able to monitor even very short discharge processes in an energy-saving manner, a release (5) and at least one memory circuit (6) are arranged between the transformer (2, 3) and the monitoring device (4). When a threshold current (Is) flowing in the conductor (1) is exceeded, the release (5) switches the monitoring device (4) from a passive mode that is not suitable for monitoring into an active mode that is suitable for monitoring. The memory circuit (6) stores the discharge current (I) to be monitored and/or recorded by the monitoring device (4).
L'invention concerne un dispositif servant à surveiller des processus de décharge dans un conducteur (1) d'un système moyenne ou haute tension. Le dispositif selon l'invention comprend au moins un convertisseur (2, 3) qui permet de détecter un courant (I) s'écoulant dans le conducteur (1) et qui est relié à un dispositif de surveillance (4) servant à surveiller le processus de décharge. L'invention vise à permettre une surveillance économe en énergie de processus de décharge même très courts. A cet effet, on place entre le convertisseur (2, 3) et le dispositif de surveillance (4) un déclencheur (5) qui fait passer le dispositif de surveillance (4) d'un mode passif ne convenant pas à la surveillance dans un mode actif permettant la surveillance lorsqu'un courant de seuil (Is) s'écoulant dans le conducteur (1) est dépassé. En outre, on place entre le convertisseur (2, 3) et le dispositif de surveillance (4) au moins un circuit de stockage (6) qui stocke le courant de décharge (I) que le dispositif de surveillance (4) doit surveiller et/ou enregistrer.
Klingbeil Lars
Oechsle Walter
Aktiengesellschaft Siemens
Smart & Biggar
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