Improvement of Reliability of Protection by Applying Microprocessor-based Relays
نویسندگان
چکیده
منابع مشابه
Implementing Back-up Protection Using Microprocessor Based Multifunction Relays
The use of microprocessor based multifunction relays is on the increase due to the advantages they offer such as communications, measurements, simplified wiring, and reduced space requirements. Since many protection functions are included in one device however, there has been some concern about providing adequate protection should a multifunction relay fail. A reliable protection scheme is very...
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15 صفحه اولReliability of microprocessor-based relay protection devices - myths and reality
Malfunction of relay protection is one of the main causes of the serious failures that periodically occur in power systems all over the world. According to the North American Electric Reliability Council [1] in 74 % cases the reason for heavy failures in power systems was the incorrect actions of relay protection in trying to avoid the failure. Thus the reliability of a power system depends on ...
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The article examines four basic theses about the ostensibly extremely high reliability of microprocessor-based relay protection (MP) touted by supporters of MP. Through detailed analysis based on many references it is shown that the basis of these theses are widespread myths, and actually MP reliability is lower than the reliability of electromechanical and electronic protective relays on discr...
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ژورنال
عنوان ژورنال: IEEJ Transactions on Power and Energy
سال: 1992
ISSN: 0385-4213,1348-8147
DOI: 10.1541/ieejpes1990.112.4_347