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Machine translation
1. (WO1980001516) IMPROVEMENT RELATING TO VOLTAGE CAPACITIVE TRANSFORMERS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/001516    International Application No.:    PCT/FR1980/000007
Publication Date: 24.07.1980 International Filing Date: 22.01.1980
IPC:
G01R 15/06 (2006.01), H02H 7/05 (2006.01)
Applicants:
Inventors:
Priority Data:
7901575 23.01.1979 FR
Title (EN) IMPROVEMENT RELATING TO VOLTAGE CAPACITIVE TRANSFORMERS
(FR) PERFECTIONNEMENT AUX TRANSFORMATEURS CAPACITIFS DE TENSION
Abstract: front page image
(EN)According to one embodiment, a voltage capacitive transformer (58) is provided with two capacitors (C1, C2) connected in series between a point of a high voltage line (62) and a reference point such as the earth (148) and two impedences (C3, C4) connected in series with the two capacitors. A medium voltage electromagnetic detector (95) is connected between the common point (94) of the two capacitors and the common point (145) of the two impedences. A voltage electronic detector (160) is connected to the terminals of the series circuit formed by the two impedences, the values of which are selected so that the instantaneous voltage across the terminals of the electronic detector is always a constant fraction of the voltage measured between the line and the reference point. Application to the control of fast static protections from a voltage capacitive transformer with medium voltage electromagnetic circuit.
(FR)Selon un mode de realisation, un transformateur capacitif de tension (58) possede deux condensateurs (C1, C2) branches en serie entre un point d"une ligne a haute tension (62) et un point de reference tel que la terre (148) et deux impedances (C3, C4) connectees en serie avec les deux condensateurs. Un detecteur electromagnetique de moyenne tension (95) est branche entre le point commun (94) des deux condensateurs et le point commun (145) des deux impedances. Un detecteur electronique de tension (160) est branche aux bornes du circuit serie forme par les deux impedances, les valeurs de celles-ci etant selectionnees pour que la tension instantanee aux bornes du detecteur electronique soit toujours une fraction constante de la tension prelevee entre la ligne et le point de reference. Application a la commande de protections statiques rapides a partir d"un transformateur capacitif de tension a circuit electromagnetique de moyenne tension.
Designated States:
Publication Language: French (FR)
Filing Language: French (FR)