Orthogonal Components Forming of the Microprocessor-Based Protection Input Signals
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چکیده
منابع مشابه
Reliability 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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15 صفحه اولImplementing 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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Wind farms are generally located far away from load centers and, to increase the power flow, series capacitors are normally installed to compensate the transmission line reactance. The interaction of the series capacitor with the wind system can cause undamped sub-harmonic (below 60 Hz or 50Hz system frequency) current and voltage oscillations, which can cause serious damage to wind turbine con...
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ژورنال
عنوان ژورنال: ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations
سال: 2020
ISSN: 2414-0341,1029-7448
DOI: 10.21122/1029-7448-2020-63-4-328-339