A turbo-generator plant

H - Electricity – 02 – K

Patent

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Details

H02K 3/40 (2006.01) H01F 3/10 (2006.01) H01F 3/14 (2006.01) H01F 27/28 (2006.01) H01F 27/32 (2006.01) H01F 27/34 (2006.01) H02K 3/14 (2006.01) H02K 3/28 (2006.01) H02K 3/48 (2006.01) H02K 11/04 (2006.01) H02K 15/00 (2006.01) H02K 15/12 (2006.01) H02K 1/16 (2006.01) H02K 9/19 (2006.01)

Patent

CA 2255769

In a plant containing a turbo-generator the magnetic circuit of the turbo- generator is included in an electric generator which directly supplies a high supply voltage of 20-800 kV, preferably higher than 36 kV. The insulation of the generator is built up of a cable (6) comprising one or more current- carrying conductors (31) with a number of strands (36) surrounded by outer and inner semiconducting layers (34, 32) and intermediate insulating layers (33). The outer semiconducting layer (34) is at earth potential. The phases of the winding are Y-connected. The Y-point may be insulated and protected from over- voltage by means of surge arresters, or else the Y-point may be earthed via a suppression filter.

Dans une installation contenant un turbogénérateur, le circuit magnétique dudit turbogénérateur est inclus dans un générateur électrique qui fournit directement une haute tension d'alimentation de 20-800 kV, de préférence supérieure à 36 kV. L'isolation du générateur est consitutée d'un câble (6) comprenant un ou plusieurs conducteurs (31) pourvus d'un nombre de torons (36) entourés par une couche extérieure et une couche intérieure semi-conductrices (34, 32) et des couches isolantes intermédiaires (33). La couche extérieure semi-conductrice (34) est au potentiel de la terre. Les phases de l'enroulement sont connectées en étoile. Le point de connexion en étoile peut être isolé et protégé contre les surtensions au moyen de coupe-circuits de surtension, ou bien, le point de connexion d'étoile peut être mis à la terre par l'intermédiaire d'un filtre de suppression.

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