FAULT LOCATION SYSTEM IN AUTOTRANSFORMER FEEDING CIRCUIT OF AC ELECTRIC RAILWAYS

The distance vs. reactance curve of the autotransformer feeding circuit as used for the Sanyo line is not linear but approximately parabolic. Further, it differs from circuit to circuit. For this reason, conventional fault locators can not be used for the autotransformer feeding circuit. An attempt was made to measure the distance between the feeding point and the fault point by combining feeding voltages with feeder currents in a suitable way. It was found that the neutral current ratio of the autotransformer is proportional to the distance. The neutral current ratio type fault locator has been developed on the basis of this principle. This system was applied to the Okayama-Hakata section (393 km) of the Sanyo line for the first time and since then, has continually worked very satisfactorily. This paper describes the impedance and neutral current ratio characteristics of the autotransformer feeding circuit and outlines the neutral current ratio type fault locator and its operating records.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/04247760
• Corporate Authors:

  Scripta Publishing Corporation

  Investment Building
  Washington, DC  United States  20005
• Authors:
  • Fujie, H
  • Miura, A
• Publication Date: 1976-9

Media Info

• Features: References;
• Pagination: p. 96-105
• Serial:
  • Electrical Engineering in Japan
  • Volume: 96
  • Issue Number: 5
  • Publisher: Scripta Technica, Incorporated
  • ISSN: 0424-7760

Subject/Index Terms

• TRT Terms: Autotransformers; Electric power supply; Electric railroads; Electrical equipment; Fault location; Information processing; Railroad electrification; Short circuits; Transmission lines
• Old TRIS Terms: Autotransformer feeding circuits; Electric autotransformers; Ground currents; Natural sciences applications
• Subject Areas: Energy; Railroads;

Filing Info

• Accession Number: 00173158
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Apr 26 1978 12:00AM