Multifunction protective relay system
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United States of America Patent
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Jun 29, 1993
Grant Date -
N/A
app pub date -
Apr 19, 1991
filing date -
Apr 19, 1991
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A protective relay system for generation apparatus connectable to a three-phase alternating current electrical utility system. The relay system includes a dual processing architecture wherein a digital signal processor executes all the signal-processing algorithms, and a separate microprocessor is used for input/output data processing. A dual-ported RAM is used to effect a fast communication link between the digital signal processor and the microprocessor to accomplish high-speed protective relaying functions to selectively trip and close a circuit breaker at a generator or cogenerator site, or that which connects it to an electric utility system.
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