CONVERSION FROM THREE-PHASE AC TO DC AND ITS RECENT EVOLUTION AT SNCF

LA CONVERSION TRIPHASE-CONTINU ET SON EVOLUTION RECENTE A LA SNCF

On the 9,400 km of electrified railway lines 5,000 km of lines operate at 1,500 V dc from nearly 300 converter substations. High voltage supply is delivered at 63 or 90 kV and nearly all the rectifier groups are of the silicon type today, which makes installations simpler, while improving efficiency and reducing maintenance costs. The 5,000 kW groups (with traction overload; IEC Publication 146) have a Graetz double bridge connection and diodes of 2,600 V peak inverse voltage. The 1,500 V ultra-fast operating circuit-breakers which protect the outgoing feeders remain very sensitive devices and protection of these outgoing feeders is difficult to maintain.

• Corporate Authors:

  Societe Francaise des Electriciens

  16 rue Franklin
  Paris 16e,   France 
• Authors:
  • Tremege, M
• Publication Date: 1979-9

Language

• French

Media Info

• Pagination: p. 649-652
• Serial:
  • Revue Generale de l'Electricite
  • Volume: 88
  • Issue Number: 9
  • Publisher: Societe Francaise des Electriciens

Subject/Index Terms

• TRT Terms: Circuit breakers; Converters (Electricity); Electric power supply; Electric substations; Railroad electrification; Rectifiers
• Identifier Terms: Societe nationale des chemins de fer francais
• Old TRIS Terms: Converters
• Subject Areas: Energy; Railroads;

Filing Info

• Accession Number: 00312437
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Sep 16 1980 12:00AM