Multifunction protective relay system

Details Multifunction protective relay system Multifunction protective relay system

1991-04-19

1993-06-29

DeBoer, Todd E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 80, H02H 300

Patent

active

052240118

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.

REFERENCES:
patent: 4351013 (1982-09-01), Matsko et al.
patent: 4371947 (1983-02-01), Fujisawa
patent: 4672501 (1987-06-01), Bilac et al.
patent: 4709295 (1987-11-01), Yamaura et al.

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