NDLI: The Application of Relays for the Protection of Power System Interconnections

Content Provider	IEEE Xplore Digital Library
Author	Crichton, L. N. Graves, H. C.
Copyright Year	1884
Abstract	This work is a compilation of many of the new methods for relay protection required by superpower interconnections. The ideas have been obtained from various sources and represent good present day practise. The general requirements for such interconnections are mentioned with particular reference to protection against phase-to-phase short circuits in those cases where the short-circuit current, under certain system conditions, is less than the full-load current under other conditions. The clearing of accidental grounds is discussed and a new study of residual currents on systems of different types is given. This study indicates the usefulness of certain inverse time limit relays on systems having dead grounded power transformer neutrals at all switching stations. Bus protection and "back-up" methods are described. Some of the new relays which have been developed, or improvements which have been made to older types in order that the new demands may be met, are described; and there is illustrated a typical relay installation similar to that now being placed in service on a 220-kv. interconnection.
Starting Page	259
Ending Page	271
Page Count	13
File Size	3039442
File Format	PDF
ISSN	00963860
Volume Number	47
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1928-01-01
Publisher Place	New York, U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power system relaying Protective relaying Power system protection Power system interconnection Circuit faults Power transformers Conductors
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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