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This white paper provides both theoretical and real-world examples with questions that can be used to gain experience with symmetrical components. The full solutions to these questions can be found in the white paper "Tutorial on Symmetrical Components, Part 2: Solutions."
Event reports continue to be an invaluable feature in microprocessor-based relays. Some events are relatively straightforward to analyze, and others require experience and considerable knowledge of the power system and protective relay system in order to find root cause. This session provides several advanced real-world event examples, time to evaluate them, and solutions.
This white paper provides both theoretical and real-world examples with questions and solutions that can be used to gain experience with symmetrical components.
Event reports have been an invaluable feature in microprocessor-based relays since the initial introduction of the technology. The days of unknown root cause for an operation, lengthy outages, or unexplained test results are largely over due to this tool and the ability of engineers and technicians to use it. We must practice to become proficient at analyzing event reports. This session provides real-world event examples, time to evaluate them, and solutions.
This document defines AutoRANGER® trip logic, inrush restraint (IR), installation considerations, fault indication modes, principles of operation, battery conservation, and test/reset methods.
As part of our overall mission to make electric power safer, more reliable, and more economical, SEL develops and provides innovative, simple to use, robust technologies to protect, automate, control, monitor, and analyze power systems. An essential element of this strategy is the development of appropriate communications technologies and protocols.
This paper shows that the specific considerations of using ISM band spread-spectrum radio impact the protection scheme and give Mirrored Bits® communications a significant advantage over IEC 61850 GOOSE messages.