DocumentCode
1161303
Title
Microprocessor Based Digital Relays Application in Tepco
Author
Akimoto, Y. ; Matsuda, T. ; Matsuzawa, K. ; Yamaura, M. ; Kondow, R. ; Matsushima, T.
Author_Institution
The Tokyo Electric Power Co., Inc.
Issue
5
fYear
1981
fDate
5/1/1981 12:00:00 AM
Firstpage
2390
Lastpage
2398
Abstract
Two types of digital relaying systems using high speed microcomputers have been placed in service in the Tokyo Electric Power Co., Inc. (TEPCO). One is a current differential carrier relaying system for the protection of EHV (275 kV, 500 kV) transmission lines. This system will be used as the standard primary protection system for EHV transmission line. The other is a balance and directional distance relaying system for the protection of 66 kV parallel transmission lines. This system will mainly be applied around metropolitan area. This paper first describes the details of the above mentioned two digital relay systems now in service, then describes their background technology, that is, high speed microcomputer, automatic checking and other-means for higher reliability, and noise withstand capability.
Keywords
Data communication; Digital relays; Microcomputers; Microprocessors; Power overhead lines; Power system protection; Power system relaying; Power transmission lines; Protective relaying; System testing;
fLanguage
English
Journal_Title
Power Apparatus and Systems, IEEE Transactions on
Publisher
ieee
ISSN
0018-9510
Type
jour
DOI
10.1109/TPAS.1981.316760
Filename
4110880
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