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Computer‐aided protective relay setting system for large power networks
Author(s) -
Fujita Nobuo,
Ichie Ryozo,
Ogawa Shigeaki,
Kudo Hiroyuki,
Fukui Chihiro,
Nakata Yuji
Publication year - 1995
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.4391150503
Subject(s) - backup , relay , protective relay , fault (geology) , graphical user interface , workstation , electric power system , interface (matter) , computer science , variety (cybernetics) , power (physics) , digital protective relay , power system protection , engineering , operating system , physics , bubble , quantum mechanics , maximum bubble pressure method , artificial intelligence , seismology , geology
Abstract This paper introduces a protective relay setting system capable of handling a large network up to 10,000 buses. The remarkable features are such useful functions as network analysis (fault analysis, load flow calculation, zero‐sequence current calculation, etc.), relay operation simulation, and automated setting coordination tasks. Fault currents in the maximum and the minimum operation networks are calculated to examine the setting values. The protection zones are searched automatically along the network connection. Protection coordination tasks among the primary and the backup relays composed of different types of relays can be performed by the relay operation simulation. The system is built on an engineering workstation, which works in cooperation with other network operation support systems. Its graphical user interface helps every engineer to examine the relay setting using a variety of databases.