DocumentCode
1013911
Title
A New High-Speed Distance-Type Carrier-Pilot Relay System
Author
Harder, E.L. ; Lenehan, B.E. ; Goldsborough, S.L.
Author_Institution
Switchgear engineer with the Westinghouse Electric & Manufacturing company, East Pittsburgh, Pa.
Volume
57
Issue
1
fYear
1938
Firstpage
5
Lastpage
10
Abstract
This paper outlines the reasons for application of pilot relay equipment, particularly of the carrier-current type. A one-cycle carrier-pilot-relay scheme is described which now makes available the desirable high-speed and back-up characteristics of step-type distance protection combined with the 100 per cent simultaneous tripping feature possible with a pilot circuit. Impedance and over current supervised single-phase directional elements are utilized for controlling carrier on phase and ground faults, respectively.
Keywords
Circuit faults; Impedance measurement; Measurement standards; Power system protection; Power system relaying; Protective relaying; Standards development;
fLanguage
English
Journal_Title
American Institute of Electrical Engineers, Transactions of the
Publisher
ieee
ISSN
0096-3860
Type
jour
DOI
10.1109/T-AIEE.1938.5057729
Filename
5057729
Link To Document