Distance relaying systems

Details Distance relaying systems Distance relaying systems

1978-05-09

1980-07-08

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

H02H 338

Patent

active

042120462

ABSTRACT:
In a digital distance relaying system the principle of comparing the amplitude values of alternating current quantities is used. In one example, amplitude values of V and V-IZ are compared and in the other example the amplitude values of V-IZ and IZ are compared for determining the operating point of the relay system.

REFERENCES:
patent: 3569785 (1971-03-01), Durbeck
patent: 3731152 (1973-05-01), Rockefeller, Jr.
patent: 3931502 (1976-01-01), Kohlas
patent: 3984737 (1976-10-01), Okamura et al.
patent: 4107778 (1978-08-01), Nii et al.

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